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linux/drivers/net/macvlan.c

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[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
rcu: split list.h and move rcu-protected lists into rculist.h Move rcu-protected lists from list.h into a new header file rculist.h. This is done because list are a very used primitive structure all over the kernel and it's currently impossible to include other header files in this list.h without creating some circular dependencies. For example, list.h implements rcu-protected list and uses rcu_dereference() without including rcupdate.h. It actually compiles because users of rcu_dereference() are macros. Others RCU functions could be used too but aren't probably because of this. Therefore this patch creates rculist.h which includes rcupdates without to many changes/troubles. Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Josh Triplett <josh@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-05-12 21:21:05 +02:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: implement bridge, VEPA and private mode This allows each macvlan slave device to be in one of three modes, depending on the use case: MACVLAN_PRIVATE: The device never communicates with any other device on the same upper_dev. This even includes frames coming back from a reflective relay, where supported by the adjacent bridge. MACVLAN_VEPA: The new Virtual Ethernet Port Aggregator (VEPA) mode, we assume that the adjacent bridge returns all frames where both source and destination are local to the macvlan port, i.e. the bridge is set up as a reflective relay. Broadcast frames coming in from the upper_dev get flooded to all macvlan interfaces in VEPA mode. We never deliver any frames locally. MACVLAN_BRIDGE: We provide the behavior of a simple bridge between different macvlan interfaces on the same port. Frames from one interface to another one get delivered directly and are not sent out externally. Broadcast frames get flooded to all other bridge ports and to the external interface, but when they come back from a reflective relay, we don't deliver them again. Since we know all the MAC addresses, the macvlan bridge mode does not require learning or STP like the bridge module does. Based on an earlier patch "macvlan: Reflect macvlan packets meant for other macvlan devices" by Eric Biederman. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Cc: Eric Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:10 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: use call_rcu for port free Use call_rcu rather than synchronize_rcu. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-07 01:36:29 +00:00
macvlan: Introduce 'passthru' mode to takeover the underlying device With the current default 'vepa' mode, a KVM guest using virtio with macvtap backend has the following limitations. - cannot change/add a mac address on the guest virtio-net - cannot create a vlan device on the guest virtio-net - cannot enable promiscuous mode on guest virtio-net To address these limitations, this patch introduces a new mode called 'passthru' when creating a macvlan device which allows takeover of the underlying device and passing it to a guest using virtio with macvtap backend. Only one macvlan device is allowed in passthru mode and it inherits the mac address from the underlying device and sets it in promiscuous mode to receive and forward all the packets. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> ------------------------------------------------------------------------- Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-28 13:10:50 +00:00
macvlan: Fix use after free of struct macvlan_port. When the macvlan driver was extended to call unregisgter_netdevice_queue in 23289a37e2b127dfc4de1313fba15bb4c9f0cd5b, a use after free of struct macvlan_port was introduced. The code in dellink relied on unregister_netdevice actually unregistering the net device so it would be safe to free macvlan_port. Since unregister_netdevice_queue can just queue up the unregister instead of performing the unregiser immediately we free the macvlan_port too soon and then the code in macvlan_stop removes the macaddress for the set of macaddress to listen for and uses memory that has already been freed. To fix this add a reference count to track when it is safe to free the macvlan_port and move the call of macvlan_port_destroy into macvlan_uninit which is guaranteed to be called after the final macvlan_port_close. Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-21 18:22:22 -07:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: Fix use after free of struct macvlan_port. When the macvlan driver was extended to call unregisgter_netdevice_queue in 23289a37e2b127dfc4de1313fba15bb4c9f0cd5b, a use after free of struct macvlan_port was introduced. The code in dellink relied on unregister_netdevice actually unregistering the net device so it would be safe to free macvlan_port. Since unregister_netdevice_queue can just queue up the unregister instead of performing the unregiser immediately we free the macvlan_port too soon and then the code in macvlan_stop removes the macaddress for the set of macaddress to listen for and uses memory that has already been freed. To fix this add a reference count to track when it is safe to free the macvlan_port and move the call of macvlan_port_destroy into macvlan_uninit which is guaranteed to be called after the final macvlan_port_close. Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-21 18:22:22 -07:00
macvlan: use rx_handler_data pointer to store macvlan_port pointer V2 Register macvlan_port pointer as rx_handler data pointer. As macvlan_port is removed from struct net_device, another netdev priv_flag is added to indicate the device serves as a macvlan port. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-15 03:27:57 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: Use compare_ether_addr_64bits() To speedup ether addresses compares, we can use compare_ether_addr_64bits() (all operands are guaranteed to be at least 8 bytes long) Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-01 05:46:05 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: Deterministic ingress packet delivery Changing the mac address when a macvlan device is up will leave the device on the wrong hash chain making it impossible to receive packets. There is no checking of the mac address set on the macvlan. Allowing a misconfiguration to grab packets from the the underlying device or another macvlan. To resolve these problems I update the hash table of macvlans when the mac address of a macvlan changes, and when updating the hash table I verify that the new mac address is usable. The result is well defined and predictable if not perfect handling of mac vlan mac addresses. To keep the code clear I have created a set of hash table maintenance in macvlan so I am not open coding the hash function and the logic needed to update the hash table all over the place. Signed-off-by: Eric Biederman <ebiederm@aristanetworks.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 13:16:13 -07:00
macvlan: remove one synchronize_rcu() call When one macvlan device is dismantled, we can avoid one synchronize_rcu() call done after deletion from hash list, since caller will perform a synchronize_net() call after its ndo_stop() call. Add a new netdev->dismantle field to signal this dismantle intent. Reduces RTNL hold time. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Patrick McHardy <kaber@trash.net> CC: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-19 12:24:16 +00:00
macvlan: Deterministic ingress packet delivery Changing the mac address when a macvlan device is up will leave the device on the wrong hash chain making it impossible to receive packets. There is no checking of the mac address set on the macvlan. Allowing a misconfiguration to grab packets from the the underlying device or another macvlan. To resolve these problems I update the hash table of macvlans when the mac address of a macvlan changes, and when updating the hash table I verify that the new mac address is usable. The result is well defined and predictable if not perfect handling of mac vlan mac addresses. To keep the code clear I have created a set of hash table maintenance in macvlan so I am not open coding the hash function and the logic needed to update the hash table all over the place. Signed-off-by: Eric Biederman <ebiederm@aristanetworks.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 13:16:13 -07:00
macvlan: remove one synchronize_rcu() call When one macvlan device is dismantled, we can avoid one synchronize_rcu() call done after deletion from hash list, since caller will perform a synchronize_net() call after its ndo_stop() call. Add a new netdev->dismantle field to signal this dismantle intent. Reduces RTNL hold time. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Patrick McHardy <kaber@trash.net> CC: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-19 12:24:16 +00:00
macvlan: Deterministic ingress packet delivery Changing the mac address when a macvlan device is up will leave the device on the wrong hash chain making it impossible to receive packets. There is no checking of the mac address set on the macvlan. Allowing a misconfiguration to grab packets from the the underlying device or another macvlan. To resolve these problems I update the hash table of macvlans when the mac address of a macvlan changes, and when updating the hash table I verify that the new mac address is usable. The result is well defined and predictable if not perfect handling of mac vlan mac addresses. To keep the code clear I have created a set of hash table maintenance in macvlan so I am not open coding the hash function and the logic needed to update the hash table all over the place. Signed-off-by: Eric Biederman <ebiederm@aristanetworks.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 13:16:13 -07:00
macvlan: remove one synchronize_rcu() call When one macvlan device is dismantled, we can avoid one synchronize_rcu() call done after deletion from hash list, since caller will perform a synchronize_net() call after its ndo_stop() call. Add a new netdev->dismantle field to signal this dismantle intent. Reduces RTNL hold time. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Patrick McHardy <kaber@trash.net> CC: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-19 12:24:16 +00:00
macvlan: Deterministic ingress packet delivery Changing the mac address when a macvlan device is up will leave the device on the wrong hash chain making it impossible to receive packets. There is no checking of the mac address set on the macvlan. Allowing a misconfiguration to grab packets from the the underlying device or another macvlan. To resolve these problems I update the hash table of macvlans when the mac address of a macvlan changes, and when updating the hash table I verify that the new mac address is usable. The result is well defined and predictable if not perfect handling of mac vlan mac addresses. To keep the code clear I have created a set of hash table maintenance in macvlan so I am not open coding the hash function and the logic needed to update the hash table all over the place. Signed-off-by: Eric Biederman <ebiederm@aristanetworks.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 13:16:13 -07:00
macvlan: Use compare_ether_addr_64bits() To speedup ether addresses compares, we can use compare_ether_addr_64bits() (all operands are guaranteed to be at least 8 bytes long) Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-01 05:46:05 +00:00
macvlan: Deterministic ingress packet delivery Changing the mac address when a macvlan device is up will leave the device on the wrong hash chain making it impossible to receive packets. There is no checking of the mac address set on the macvlan. Allowing a misconfiguration to grab packets from the the underlying device or another macvlan. To resolve these problems I update the hash table of macvlans when the mac address of a macvlan changes, and when updating the hash table I verify that the new mac address is usable. The result is well defined and predictable if not perfect handling of mac vlan mac addresses. To keep the code clear I have created a set of hash table maintenance in macvlan so I am not open coding the hash function and the logic needed to update the hash table all over the place. Signed-off-by: Eric Biederman <ebiederm@aristanetworks.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 13:16:13 -07:00
macvlan: cleanup rx statistics We have very similar code for rx statistics in two places in the macvlan driver, with a third one being added in the next patch. Consolidate them into one function to improve overall readability of the driver. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:09 +00:00
macvlan: allow multiple driver backends This makes it possible to hook into the macvlan driver from another kernel module. In particular, the goal is to extend it with the macvtap backend that provides a tun/tap compatible interface directly on the macvlan device. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-30 12:23:40 +00:00
macvlan: implement bridge, VEPA and private mode This allows each macvlan slave device to be in one of three modes, depending on the use case: MACVLAN_PRIVATE: The device never communicates with any other device on the same upper_dev. This even includes frames coming back from a reflective relay, where supported by the adjacent bridge. MACVLAN_VEPA: The new Virtual Ethernet Port Aggregator (VEPA) mode, we assume that the adjacent bridge returns all frames where both source and destination are local to the macvlan port, i.e. the bridge is set up as a reflective relay. Broadcast frames coming in from the upper_dev get flooded to all macvlan interfaces in VEPA mode. We never deliver any frames locally. MACVLAN_BRIDGE: We provide the behavior of a simple bridge between different macvlan interfaces on the same port. Frames from one interface to another one get delivered directly and are not sent out externally. Broadcast frames get flooded to all other bridge ports and to the external interface, but when they come back from a reflective relay, we don't deliver them again. Since we know all the MAC addresses, the macvlan bridge mode does not require learning or STP like the bridge module does. Based on an earlier patch "macvlan: Reflect macvlan packets meant for other macvlan devices" by Eric Biederman. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Cc: Eric Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:10 +00:00
macvlan: cleanup rx statistics We have very similar code for rx statistics in two places in the macvlan driver, with a third one being added in the next patch. Consolidate them into one function to improve overall readability of the driver. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:09 +00:00
macvlan: allow multiple driver backends This makes it possible to hook into the macvlan driver from another kernel module. In particular, the goal is to extend it with the macvtap backend that provides a tun/tap compatible interface directly on the macvlan device. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-30 12:23:40 +00:00
macvlan: cleanup rx statistics We have very similar code for rx statistics in two places in the macvlan driver, with a third one being added in the next patch. Consolidate them into one function to improve overall readability of the driver. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:09 +00:00
macvlan: implement bridge, VEPA and private mode This allows each macvlan slave device to be in one of three modes, depending on the use case: MACVLAN_PRIVATE: The device never communicates with any other device on the same upper_dev. This even includes frames coming back from a reflective relay, where supported by the adjacent bridge. MACVLAN_VEPA: The new Virtual Ethernet Port Aggregator (VEPA) mode, we assume that the adjacent bridge returns all frames where both source and destination are local to the macvlan port, i.e. the bridge is set up as a reflective relay. Broadcast frames coming in from the upper_dev get flooded to all macvlan interfaces in VEPA mode. We never deliver any frames locally. MACVLAN_BRIDGE: We provide the behavior of a simple bridge between different macvlan interfaces on the same port. Frames from one interface to another one get delivered directly and are not sent out externally. Broadcast frames get flooded to all other bridge ports and to the external interface, but when they come back from a reflective relay, we don't deliver them again. Since we know all the MAC addresses, the macvlan bridge mode does not require learning or STP like the bridge module does. Based on an earlier patch "macvlan: Reflect macvlan packets meant for other macvlan devices" by Eric Biederman. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Cc: Eric Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:10 +00:00
macvlan: allow multiple driver backends This makes it possible to hook into the macvlan driver from another kernel module. In particular, the goal is to extend it with the macvtap backend that provides a tun/tap compatible interface directly on the macvlan device. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-30 12:23:40 +00:00
macvlan: implement bridge, VEPA and private mode This allows each macvlan slave device to be in one of three modes, depending on the use case: MACVLAN_PRIVATE: The device never communicates with any other device on the same upper_dev. This even includes frames coming back from a reflective relay, where supported by the adjacent bridge. MACVLAN_VEPA: The new Virtual Ethernet Port Aggregator (VEPA) mode, we assume that the adjacent bridge returns all frames where both source and destination are local to the macvlan port, i.e. the bridge is set up as a reflective relay. Broadcast frames coming in from the upper_dev get flooded to all macvlan interfaces in VEPA mode. We never deliver any frames locally. MACVLAN_BRIDGE: We provide the behavior of a simple bridge between different macvlan interfaces on the same port. Frames from one interface to another one get delivered directly and are not sent out externally. Broadcast frames get flooded to all other bridge ports and to the external interface, but when they come back from a reflective relay, we don't deliver them again. Since we know all the MAC addresses, the macvlan bridge mode does not require learning or STP like the bridge module does. Based on an earlier patch "macvlan: Reflect macvlan packets meant for other macvlan devices" by Eric Biederman. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Cc: Eric Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:10 +00:00
macvlan: cleanup rx statistics We have very similar code for rx statistics in two places in the macvlan driver, with a third one being added in the next patch. Consolidate them into one function to improve overall readability of the driver. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:09 +00:00
macvlan: allow multiple driver backends This makes it possible to hook into the macvlan driver from another kernel module. In particular, the goal is to extend it with the macvtap backend that provides a tun/tap compatible interface directly on the macvlan device. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-30 12:23:40 +00:00
macvlan: cleanup rx statistics We have very similar code for rx statistics in two places in the macvlan driver, with a third one being added in the next patch. Consolidate them into one function to improve overall readability of the driver. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:09 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: implement bridge, VEPA and private mode This allows each macvlan slave device to be in one of three modes, depending on the use case: MACVLAN_PRIVATE: The device never communicates with any other device on the same upper_dev. This even includes frames coming back from a reflective relay, where supported by the adjacent bridge. MACVLAN_VEPA: The new Virtual Ethernet Port Aggregator (VEPA) mode, we assume that the adjacent bridge returns all frames where both source and destination are local to the macvlan port, i.e. the bridge is set up as a reflective relay. Broadcast frames coming in from the upper_dev get flooded to all macvlan interfaces in VEPA mode. We never deliver any frames locally. MACVLAN_BRIDGE: We provide the behavior of a simple bridge between different macvlan interfaces on the same port. Frames from one interface to another one get delivered directly and are not sent out externally. Broadcast frames get flooded to all other bridge ports and to the external interface, but when they come back from a reflective relay, we don't deliver them again. Since we know all the MAC addresses, the macvlan bridge mode does not require learning or STP like the bridge module does. Based on an earlier patch "macvlan: Reflect macvlan packets meant for other macvlan devices" by Eric Biederman. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Cc: Eric Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:10 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: cleanup rx statistics We have very similar code for rx statistics in two places in the macvlan driver, with a third one being added in the next patch. Consolidate them into one function to improve overall readability of the driver. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:09 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: don't broadcast PAUSE frames to macvlan devices PAUSE frames are only relevant for the real device, broadcasting them to all macvlan devices can cause a significant load increase. Reported-by: Ben Greear <greearb@candelatech.com> Tested-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-26 15:30:48 -08:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: implement bridge, VEPA and private mode This allows each macvlan slave device to be in one of three modes, depending on the use case: MACVLAN_PRIVATE: The device never communicates with any other device on the same upper_dev. This even includes frames coming back from a reflective relay, where supported by the adjacent bridge. MACVLAN_VEPA: The new Virtual Ethernet Port Aggregator (VEPA) mode, we assume that the adjacent bridge returns all frames where both source and destination are local to the macvlan port, i.e. the bridge is set up as a reflective relay. Broadcast frames coming in from the upper_dev get flooded to all macvlan interfaces in VEPA mode. We never deliver any frames locally. MACVLAN_BRIDGE: We provide the behavior of a simple bridge between different macvlan interfaces on the same port. Frames from one interface to another one get delivered directly and are not sent out externally. Broadcast frames get flooded to all other bridge ports and to the external interface, but when they come back from a reflective relay, we don't deliver them again. Since we know all the MAC addresses, the macvlan bridge mode does not require learning or STP like the bridge module does. Based on an earlier patch "macvlan: Reflect macvlan packets meant for other macvlan devices" by Eric Biederman. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Cc: Eric Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:10 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: allow multiple driver backends This makes it possible to hook into the macvlan driver from another kernel module. In particular, the goal is to extend it with the macvtap backend that provides a tun/tap compatible interface directly on the macvlan device. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-30 12:23:40 +00:00
macvlan: implement bridge, VEPA and private mode This allows each macvlan slave device to be in one of three modes, depending on the use case: MACVLAN_PRIVATE: The device never communicates with any other device on the same upper_dev. This even includes frames coming back from a reflective relay, where supported by the adjacent bridge. MACVLAN_VEPA: The new Virtual Ethernet Port Aggregator (VEPA) mode, we assume that the adjacent bridge returns all frames where both source and destination are local to the macvlan port, i.e. the bridge is set up as a reflective relay. Broadcast frames coming in from the upper_dev get flooded to all macvlan interfaces in VEPA mode. We never deliver any frames locally. MACVLAN_BRIDGE: We provide the behavior of a simple bridge between different macvlan interfaces on the same port. Frames from one interface to another one get delivered directly and are not sent out externally. Broadcast frames get flooded to all other bridge ports and to the external interface, but when they come back from a reflective relay, we don't deliver them again. Since we know all the MAC addresses, the macvlan bridge mode does not require learning or STP like the bridge module does. Based on an earlier patch "macvlan: Reflect macvlan packets meant for other macvlan devices" by Eric Biederman. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Cc: Eric Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:10 +00:00
macvlan: cleanup rx statistics We have very similar code for rx statistics in two places in the macvlan driver, with a third one being added in the next patch. Consolidate them into one function to improve overall readability of the driver. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:09 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
net: introduce rx_handler results and logic around that This patch allows rx_handlers to better signalize what to do next to it's caller. That makes skb->deliver_no_wcard no longer needed. kernel-doc for rx_handler_result is taken from Nicolas' patch. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Reviewed-by: Nicolas de Pesloüan <nicolas.2p.debian@free.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-12 03:14:39 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
net: replace hooks in __netif_receive_skb V5 What this patch does is it removes two receive frame hooks (for bridge and for macvlan) from __netif_receive_skb. These are replaced them with a single hook for both. It only supports one hook per device because it makes no sense to do bridging and macvlan on the same device. Then a network driver (of virtual netdev like macvlan or bridge) can register an rx_handler for needed net device. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-01 21:52:08 +00:00
net: introduce rx_handler results and logic around that This patch allows rx_handlers to better signalize what to do next to it's caller. That makes skb->deliver_no_wcard no longer needed. kernel-doc for rx_handler_result is taken from Nicolas' patch. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Reviewed-by: Nicolas de Pesloüan <nicolas.2p.debian@free.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-12 03:14:39 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: implement bridge, VEPA and private mode This allows each macvlan slave device to be in one of three modes, depending on the use case: MACVLAN_PRIVATE: The device never communicates with any other device on the same upper_dev. This even includes frames coming back from a reflective relay, where supported by the adjacent bridge. MACVLAN_VEPA: The new Virtual Ethernet Port Aggregator (VEPA) mode, we assume that the adjacent bridge returns all frames where both source and destination are local to the macvlan port, i.e. the bridge is set up as a reflective relay. Broadcast frames coming in from the upper_dev get flooded to all macvlan interfaces in VEPA mode. We never deliver any frames locally. MACVLAN_BRIDGE: We provide the behavior of a simple bridge between different macvlan interfaces on the same port. Frames from one interface to another one get delivered directly and are not sent out externally. Broadcast frames get flooded to all other bridge ports and to the external interface, but when they come back from a reflective relay, we don't deliver them again. Since we know all the MAC addresses, the macvlan bridge mode does not require learning or STP like the bridge module does. Based on an earlier patch "macvlan: Reflect macvlan packets meant for other macvlan devices" by Eric Biederman. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Cc: Eric Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:10 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: Fix rx counters update in macvlan_handle_frame() Fix macvlan_handle_frame() to update the rx counters based on the return value of the vlan->receive call. Updated the patch to not do any packet count drops when the interface is down based on Herber'ts comments. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-27 09:10:07 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: use rx_handler_data pointer to store macvlan_port pointer V2 Register macvlan_port pointer as rx_handler data pointer. As macvlan_port is removed from struct net_device, another netdev priv_flag is added to indicate the device serves as a macvlan port. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-15 03:27:57 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: handle fragmented multicast frames Fragmented multicast frames are delivered to a single macvlan port, because ip defrag logic considers other samples are redundant. Implement a defrag step before trying to send the multicast frame. Reported-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-06 10:28:31 +00:00
macvlan: implement bridge, VEPA and private mode This allows each macvlan slave device to be in one of three modes, depending on the use case: MACVLAN_PRIVATE: The device never communicates with any other device on the same upper_dev. This even includes frames coming back from a reflective relay, where supported by the adjacent bridge. MACVLAN_VEPA: The new Virtual Ethernet Port Aggregator (VEPA) mode, we assume that the adjacent bridge returns all frames where both source and destination are local to the macvlan port, i.e. the bridge is set up as a reflective relay. Broadcast frames coming in from the upper_dev get flooded to all macvlan interfaces in VEPA mode. We never deliver any frames locally. MACVLAN_BRIDGE: We provide the behavior of a simple bridge between different macvlan interfaces on the same port. Frames from one interface to another one get delivered directly and are not sent out externally. Broadcast frames get flooded to all other bridge ports and to the external interface, but when they come back from a reflective relay, we don't deliver them again. Since we know all the MAC addresses, the macvlan bridge mode does not require learning or STP like the bridge module does. Based on an earlier patch "macvlan: Reflect macvlan packets meant for other macvlan devices" by Eric Biederman. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Cc: Eric Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:10 +00:00
macvlan: Introduce 'passthru' mode to takeover the underlying device With the current default 'vepa' mode, a KVM guest using virtio with macvtap backend has the following limitations. - cannot change/add a mac address on the guest virtio-net - cannot create a vlan device on the guest virtio-net - cannot enable promiscuous mode on guest virtio-net To address these limitations, this patch introduces a new mode called 'passthru' when creating a macvlan device which allows takeover of the underlying device and passing it to a guest using virtio with macvtap backend. Only one macvlan device is allowed in passthru mode and it inherits the mac address from the underlying device and sets it in promiscuous mode to receive and forward all the packets. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> ------------------------------------------------------------------------- Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-28 13:10:50 +00:00
macvlan: implement bridge, VEPA and private mode This allows each macvlan slave device to be in one of three modes, depending on the use case: MACVLAN_PRIVATE: The device never communicates with any other device on the same upper_dev. This even includes frames coming back from a reflective relay, where supported by the adjacent bridge. MACVLAN_VEPA: The new Virtual Ethernet Port Aggregator (VEPA) mode, we assume that the adjacent bridge returns all frames where both source and destination are local to the macvlan port, i.e. the bridge is set up as a reflective relay. Broadcast frames coming in from the upper_dev get flooded to all macvlan interfaces in VEPA mode. We never deliver any frames locally. MACVLAN_BRIDGE: We provide the behavior of a simple bridge between different macvlan interfaces on the same port. Frames from one interface to another one get delivered directly and are not sent out externally. Broadcast frames get flooded to all other bridge ports and to the external interface, but when they come back from a reflective relay, we don't deliver them again. Since we know all the MAC addresses, the macvlan bridge mode does not require learning or STP like the bridge module does. Based on an earlier patch "macvlan: Reflect macvlan packets meant for other macvlan devices" by Eric Biederman. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Cc: Eric Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:10 +00:00
macvlan: receive multicast with local address When implementing VRRP v2 using macvlan several problems were discovered. VRRP is weird in that all routers participating in a redundant group use the same virtual MAC address. Macvlan is a natural driver to use for this but it doesn't work. The problem is that packets with a macvlan device's source address are not received. The problem is actually a regression that date back almost 2 years now. The original problems started with: commit 618e1b7482f7a8a4c6c6e8ccbe140e4c331df4e9 Author: Arnd Bergmann <arnd@arndb.de> Date: Thu Nov 26 06:07:10 2009 +0000 macvlan: implement bridge, VEPA and private mode This patches restores the original 2.6.32 behavior. Allowing multicast packets received with the VRRP source address to be received. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-02 12:11:53 +00:00
net: introduce rx_handler results and logic around that This patch allows rx_handlers to better signalize what to do next to it's caller. That makes skb->deliver_no_wcard no longer needed. kernel-doc for rx_handler_result is taken from Nicolas' patch. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Reviewed-by: Nicolas de Pesloüan <nicolas.2p.debian@free.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-12 03:14:39 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: Introduce 'passthru' mode to takeover the underlying device With the current default 'vepa' mode, a KVM guest using virtio with macvtap backend has the following limitations. - cannot change/add a mac address on the guest virtio-net - cannot create a vlan device on the guest virtio-net - cannot enable promiscuous mode on guest virtio-net To address these limitations, this patch introduces a new mode called 'passthru' when creating a macvlan device which allows takeover of the underlying device and passing it to a guest using virtio with macvtap backend. Only one macvlan device is allowed in passthru mode and it inherits the mac address from the underlying device and sets it in promiscuous mode to receive and forward all the packets. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> ------------------------------------------------------------------------- Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-28 13:10:50 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
net: introduce rx_handler results and logic around that This patch allows rx_handlers to better signalize what to do next to it's caller. That makes skb->deliver_no_wcard no longer needed. kernel-doc for rx_handler_result is taken from Nicolas' patch. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Reviewed-by: Nicolas de Pesloüan <nicolas.2p.debian@free.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-12 03:14:39 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
net: introduce rx_handler results and logic around that This patch allows rx_handlers to better signalize what to do next to it's caller. That makes skb->deliver_no_wcard no longer needed. kernel-doc for rx_handler_result is taken from Nicolas' patch. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Reviewed-by: Nicolas de Pesloüan <nicolas.2p.debian@free.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-12 03:14:39 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: cleanup rx statistics We have very similar code for rx statistics in two places in the macvlan driver, with a third one being added in the next patch. Consolidate them into one function to improve overall readability of the driver. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:09 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: cleanup rx statistics We have very similar code for rx statistics in two places in the macvlan driver, with a third one being added in the next patch. Consolidate them into one function to improve overall readability of the driver. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:09 +00:00
macvlan: Fix rx counters update in macvlan_handle_frame() Fix macvlan_handle_frame() to update the rx counters based on the return value of the vlan->receive call. Updated the patch to not do any packet count drops when the interface is down based on Herber'ts comments. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-27 09:10:07 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: Fix rx counters update in macvlan_handle_frame() Fix macvlan_handle_frame() to update the rx counters based on the return value of the vlan->receive call. Updated the patch to not do any packet count drops when the interface is down based on Herber'ts comments. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-27 09:10:07 +00:00
net: introduce rx_handler results and logic around that This patch allows rx_handlers to better signalize what to do next to it's caller. That makes skb->deliver_no_wcard no longer needed. kernel-doc for rx_handler_result is taken from Nicolas' patch. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Reviewed-by: Nicolas de Pesloüan <nicolas.2p.debian@free.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-12 03:14:39 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: implement bridge, VEPA and private mode This allows each macvlan slave device to be in one of three modes, depending on the use case: MACVLAN_PRIVATE: The device never communicates with any other device on the same upper_dev. This even includes frames coming back from a reflective relay, where supported by the adjacent bridge. MACVLAN_VEPA: The new Virtual Ethernet Port Aggregator (VEPA) mode, we assume that the adjacent bridge returns all frames where both source and destination are local to the macvlan port, i.e. the bridge is set up as a reflective relay. Broadcast frames coming in from the upper_dev get flooded to all macvlan interfaces in VEPA mode. We never deliver any frames locally. MACVLAN_BRIDGE: We provide the behavior of a simple bridge between different macvlan interfaces on the same port. Frames from one interface to another one get delivered directly and are not sent out externally. Broadcast frames get flooded to all other bridge ports and to the external interface, but when they come back from a reflective relay, we don't deliver them again. Since we know all the MAC addresses, the macvlan bridge mode does not require learning or STP like the bridge module does. Based on an earlier patch "macvlan: Reflect macvlan packets meant for other macvlan devices" by Eric Biederman. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Cc: Eric Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:10 +00:00
macvlan : fix checksums error when we are in bridge mode When the lower device has offloading capabilities, the packets checksums are not computed. That leads to have any macvlan port in bridge mode to not work because the packets are dropped due to a bad checksum. If the macvlan is in bridge mode, the packet is forwarded to another macvlan port and reach the network stack where it looks for a checksum but this one was not computed due to the offloading of the lower device. In this case, we have to set the packet with CHECKSUM_UNNECESSARY when it is forwarded to a bridged port and restore the previous value of ip_summed when the packet goes to the lowerdev. Signed-off-by: Daniel Lezcano <daniel.lezcano@free.fr> Cc: Patrick McHardy <kaber@trash.net> Cc: Andrian Nord <nightnord@gmail.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-14 06:08:07 +00:00
macvlan: implement bridge, VEPA and private mode This allows each macvlan slave device to be in one of three modes, depending on the use case: MACVLAN_PRIVATE: The device never communicates with any other device on the same upper_dev. This even includes frames coming back from a reflective relay, where supported by the adjacent bridge. MACVLAN_VEPA: The new Virtual Ethernet Port Aggregator (VEPA) mode, we assume that the adjacent bridge returns all frames where both source and destination are local to the macvlan port, i.e. the bridge is set up as a reflective relay. Broadcast frames coming in from the upper_dev get flooded to all macvlan interfaces in VEPA mode. We never deliver any frames locally. MACVLAN_BRIDGE: We provide the behavior of a simple bridge between different macvlan interfaces on the same port. Frames from one interface to another one get delivered directly and are not sent out externally. Broadcast frames get flooded to all other bridge ports and to the external interface, but when they come back from a reflective relay, we don't deliver them again. Since we know all the MAC addresses, the macvlan bridge mode does not require learning or STP like the bridge module does. Based on an earlier patch "macvlan: Reflect macvlan packets meant for other macvlan devices" by Eric Biederman. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Cc: Eric Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:10 +00:00
macvlan : fix checksums error when we are in bridge mode When the lower device has offloading capabilities, the packets checksums are not computed. That leads to have any macvlan port in bridge mode to not work because the packets are dropped due to a bad checksum. If the macvlan is in bridge mode, the packet is forwarded to another macvlan port and reach the network stack where it looks for a checksum but this one was not computed due to the offloading of the lower device. In this case, we have to set the packet with CHECKSUM_UNNECESSARY when it is forwarded to a bridged port and restore the previous value of ip_summed when the packet goes to the lowerdev. Signed-off-by: Daniel Lezcano <daniel.lezcano@free.fr> Cc: Patrick McHardy <kaber@trash.net> Cc: Andrian Nord <nightnord@gmail.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-14 06:08:07 +00:00
macvlan: implement bridge, VEPA and private mode This allows each macvlan slave device to be in one of three modes, depending on the use case: MACVLAN_PRIVATE: The device never communicates with any other device on the same upper_dev. This even includes frames coming back from a reflective relay, where supported by the adjacent bridge. MACVLAN_VEPA: The new Virtual Ethernet Port Aggregator (VEPA) mode, we assume that the adjacent bridge returns all frames where both source and destination are local to the macvlan port, i.e. the bridge is set up as a reflective relay. Broadcast frames coming in from the upper_dev get flooded to all macvlan interfaces in VEPA mode. We never deliver any frames locally. MACVLAN_BRIDGE: We provide the behavior of a simple bridge between different macvlan interfaces on the same port. Frames from one interface to another one get delivered directly and are not sent out externally. Broadcast frames get flooded to all other bridge ports and to the external interface, but when they come back from a reflective relay, we don't deliver them again. Since we know all the MAC addresses, the macvlan bridge mode does not require learning or STP like the bridge module does. Based on an earlier patch "macvlan: Reflect macvlan packets meant for other macvlan devices" by Eric Biederman. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Cc: Eric Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:10 +00:00
macvlan: Forward unicast frames in bridge mode to lowerdev Unicast frames between macvlan interfaces in bridge mode are not otherwise sent to network taps on the lowerdev (as all other macvlan frames are), so forward the frames to the receive queue of the lowerdev first. Signed-off-by: David Ward <david.ward@ll.mit.edu> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-19 02:53:20 +00:00
macvlan/macvtap: Fix unicast between macvtap interfaces in bridge mode Packets should always be forwarded to the lowerdev using dev_forward_skb. vlan->forward is for packets being forwarded directly to another macvlan/ macvtap device (used for multicast in bridge mode). Reported-and-tested-by: Shlomo Pongratz <shlomop@mellanox.com> Signed-off-by: David Ward <david.ward@ll.mit.edu> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-09-18 12:53:20 +00:00
macvlan: implement bridge, VEPA and private mode This allows each macvlan slave device to be in one of three modes, depending on the use case: MACVLAN_PRIVATE: The device never communicates with any other device on the same upper_dev. This even includes frames coming back from a reflective relay, where supported by the adjacent bridge. MACVLAN_VEPA: The new Virtual Ethernet Port Aggregator (VEPA) mode, we assume that the adjacent bridge returns all frames where both source and destination are local to the macvlan port, i.e. the bridge is set up as a reflective relay. Broadcast frames coming in from the upper_dev get flooded to all macvlan interfaces in VEPA mode. We never deliver any frames locally. MACVLAN_BRIDGE: We provide the behavior of a simple bridge between different macvlan interfaces on the same port. Frames from one interface to another one get delivered directly and are not sent out externally. Broadcast frames get flooded to all other bridge ports and to the external interface, but when they come back from a reflective relay, we don't deliver them again. Since we know all the MAC addresses, the macvlan bridge mode does not require learning or STP like the bridge module does. Based on an earlier patch "macvlan: Reflect macvlan packets meant for other macvlan devices" by Eric Biederman. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Cc: Eric Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:10 +00:00
macvlan : fix checksums error when we are in bridge mode When the lower device has offloading capabilities, the packets checksums are not computed. That leads to have any macvlan port in bridge mode to not work because the packets are dropped due to a bad checksum. If the macvlan is in bridge mode, the packet is forwarded to another macvlan port and reach the network stack where it looks for a checksum but this one was not computed due to the offloading of the lower device. In this case, we have to set the packet with CHECKSUM_UNNECESSARY when it is forwarded to a bridged port and restore the previous value of ip_summed when the packet goes to the lowerdev. Signed-off-by: Daniel Lezcano <daniel.lezcano@free.fr> Cc: Patrick McHardy <kaber@trash.net> Cc: Andrian Nord <nightnord@gmail.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-14 06:08:07 +00:00
net: maintain namespace isolation between vlan and real device In the vlan and macvlan drivers, the start_xmit function forwards data to the dev_queue_xmit function for another device, which may potentially belong to a different namespace. To make sure that classification stays within a single namespace, this resets the potentially critical fields. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-30 12:23:03 +00:00
macvlan: implement bridge, VEPA and private mode This allows each macvlan slave device to be in one of three modes, depending on the use case: MACVLAN_PRIVATE: The device never communicates with any other device on the same upper_dev. This even includes frames coming back from a reflective relay, where supported by the adjacent bridge. MACVLAN_VEPA: The new Virtual Ethernet Port Aggregator (VEPA) mode, we assume that the adjacent bridge returns all frames where both source and destination are local to the macvlan port, i.e. the bridge is set up as a reflective relay. Broadcast frames coming in from the upper_dev get flooded to all macvlan interfaces in VEPA mode. We never deliver any frames locally. MACVLAN_BRIDGE: We provide the behavior of a simple bridge between different macvlan interfaces on the same port. Frames from one interface to another one get delivered directly and are not sent out externally. Broadcast frames get flooded to all other bridge ports and to the external interface, but when they come back from a reflective relay, we don't deliver them again. Since we know all the MAC addresses, the macvlan bridge mode does not require learning or STP like the bridge module does. Based on an earlier patch "macvlan: Reflect macvlan packets meant for other macvlan devices" by Eric Biederman. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Cc: Eric Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:10 +00:00
macvlan: allow multiple driver backends This makes it possible to hook into the macvlan driver from another kernel module. In particular, the goal is to extend it with the macvtap backend that provides a tun/tap compatible interface directly on the macvlan device. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-30 12:23:40 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: lockless tx path macvlan is a stacked device, like tunnels. We should use the lockless mechanism we are using in tunnels and loopback. This patch completely removes locking in TX path. tx stat counters are added into existing percpu stat structure, renamed from rx_stats to pcpu_stats. Note : this reverts commit 2c11455321f37 (macvlan: add multiqueue capability) Note : rx_errors converted to a 32bit counter, like tx_dropped, since they dont need 64bit range. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Patrick McHardy <kaber@trash.net> Cc: Ben Greear <greearb@candelatech.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-10 21:14:04 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: implement bridge, VEPA and private mode This allows each macvlan slave device to be in one of three modes, depending on the use case: MACVLAN_PRIVATE: The device never communicates with any other device on the same upper_dev. This even includes frames coming back from a reflective relay, where supported by the adjacent bridge. MACVLAN_VEPA: The new Virtual Ethernet Port Aggregator (VEPA) mode, we assume that the adjacent bridge returns all frames where both source and destination are local to the macvlan port, i.e. the bridge is set up as a reflective relay. Broadcast frames coming in from the upper_dev get flooded to all macvlan interfaces in VEPA mode. We never deliver any frames locally. MACVLAN_BRIDGE: We provide the behavior of a simple bridge between different macvlan interfaces on the same port. Frames from one interface to another one get delivered directly and are not sent out externally. Broadcast frames get flooded to all other bridge ports and to the external interface, but when they come back from a reflective relay, we don't deliver them again. Since we know all the MAC addresses, the macvlan bridge mode does not require learning or STP like the bridge module does. Based on an earlier patch "macvlan: Reflect macvlan packets meant for other macvlan devices" by Eric Biederman. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Cc: Eric Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:10 +00:00
net: congestion notifications are not dropped packets vlan/macvlan start_xmit() can inform caller of congestion with NET_XMIT_CN return value. This doesnt mean packet was dropped. Increment normal stat counters instead of tx_dropped. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-10 04:51:02 +00:00
macvlan: lockless tx path macvlan is a stacked device, like tunnels. We should use the lockless mechanism we are using in tunnels and loopback. This patch completely removes locking in TX path. tx stat counters are added into existing percpu stat structure, renamed from rx_stats to pcpu_stats. Note : this reverts commit 2c11455321f37 (macvlan: add multiqueue capability) Note : rx_errors converted to a 32bit counter, like tx_dropped, since they dont need 64bit range. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Patrick McHardy <kaber@trash.net> Cc: Ben Greear <greearb@candelatech.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-10 21:14:04 +00:00
macvlan: add multiqueue capability macvlan devices are currently not multi-queue capable. We can do that defining rtnl_link_ops method, get_tx_queues(), called from rtnl_create_link() This new method gets num_tx_queues/real_num_tx_queues from lower device. macvlan_get_tx_queues() is a copy of vlan_get_tx_queues(). Because macvlan_start_xmit() has to update netdev_queue stats only (and not dev->stats), I chose to change tx_errors/tx_aborted_errors accounting to tx_dropped, since netdev_queue structure doesnt define tx_errors / tx_aborted_errors. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-03 00:11:45 +00:00
macvlan: lockless tx path macvlan is a stacked device, like tunnels. We should use the lockless mechanism we are using in tunnels and loopback. This patch completely removes locking in TX path. tx stat counters are added into existing percpu stat structure, renamed from rx_stats to pcpu_stats. Note : this reverts commit 2c11455321f37 (macvlan: add multiqueue capability) Note : rx_errors converted to a 32bit counter, like tx_dropped, since they dont need 64bit range. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Patrick McHardy <kaber@trash.net> Cc: Ben Greear <greearb@candelatech.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-10 21:14:04 +00:00
vlan/macvlan: propagate transmission state to upper layers Both vlan and macvlan devices usually don't use a qdisc and immediately queue packets to the underlying device. Propagate transmission state of the underlying device to the upper layers so they can react on congestion and/or inform the sending process. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-10 06:14:24 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: allow multiple driver backends This makes it possible to hook into the macvlan driver from another kernel module. In particular, the goal is to extend it with the macvtap backend that provides a tun/tap compatible interface directly on the macvlan device. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-30 12:23:40 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
[NET]: Move hardware header operations out of netdevice. Since hardware header operations are part of the protocol class not the device instance, make them into a separate object and save memory. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-09 01:40:57 -07:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
[NET]: Wrap netdevice hardware header creation. Add inline for common usage of hardware header creation, and fix bug in IPV6 mcast where the assumption about negative return is an errno. Negative return from hard_header means not enough space was available,(ie -N bytes). Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-09 01:36:32 -07:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
[NET]: Move hardware header operations out of netdevice. Since hardware header operations are part of the protocol class not the device instance, make them into a separate object and save memory. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-09 01:40:57 -07:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: Introduce 'passthru' mode to takeover the underlying device With the current default 'vepa' mode, a KVM guest using virtio with macvtap backend has the following limitations. - cannot change/add a mac address on the guest virtio-net - cannot create a vlan device on the guest virtio-net - cannot enable promiscuous mode on guest virtio-net To address these limitations, this patch introduces a new mode called 'passthru' when creating a macvlan device which allows takeover of the underlying device and passing it to a guest using virtio with macvtap backend. Only one macvlan device is allowed in passthru mode and it inherits the mac address from the underlying device and sets it in promiscuous mode to receive and forward all the packets. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> ------------------------------------------------------------------------- Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-28 13:10:50 +00:00
macvlan: Deterministic ingress packet delivery Changing the mac address when a macvlan device is up will leave the device on the wrong hash chain making it impossible to receive packets. There is no checking of the mac address set on the macvlan. Allowing a misconfiguration to grab packets from the the underlying device or another macvlan. To resolve these problems I update the hash table of macvlans when the mac address of a macvlan changes, and when updating the hash table I verify that the new mac address is usable. The result is well defined and predictable if not perfect handling of mac vlan mac addresses. To keep the code clear I have created a set of hash table maintenance in macvlan so I am not open coding the hash function and the logic needed to update the hash table all over the place. Signed-off-by: Eric Biederman <ebiederm@aristanetworks.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 13:16:13 -07:00
net: move address list functions to a separate file +little renaming of unicast functions to be smooth with multicast ones Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-01 21:22:09 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: Check return of dev_set_allmulti allmulti might overflow. Commit: "netdevice: Fix promiscuity and allmulti overflow" in net-next makes dev_set_promiscuity/allmulti return error number if overflow happened. Here, we check the positive increment for allmulti to get error return. Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-14 20:57:07 -07:00
macvlan: Introduce 'passthru' mode to takeover the underlying device With the current default 'vepa' mode, a KVM guest using virtio with macvtap backend has the following limitations. - cannot change/add a mac address on the guest virtio-net - cannot create a vlan device on the guest virtio-net - cannot enable promiscuous mode on guest virtio-net To address these limitations, this patch introduces a new mode called 'passthru' when creating a macvlan device which allows takeover of the underlying device and passing it to a guest using virtio with macvtap backend. Only one macvlan device is allowed in passthru mode and it inherits the mac address from the underlying device and sets it in promiscuous mode to receive and forward all the packets. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> ------------------------------------------------------------------------- Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-28 13:10:50 +00:00
macvlan: Deterministic ingress packet delivery Changing the mac address when a macvlan device is up will leave the device on the wrong hash chain making it impossible to receive packets. There is no checking of the mac address set on the macvlan. Allowing a misconfiguration to grab packets from the the underlying device or another macvlan. To resolve these problems I update the hash table of macvlans when the mac address of a macvlan changes, and when updating the hash table I verify that the new mac address is usable. The result is well defined and predictable if not perfect handling of mac vlan mac addresses. To keep the code clear I have created a set of hash table maintenance in macvlan so I am not open coding the hash function and the logic needed to update the hash table all over the place. Signed-off-by: Eric Biederman <ebiederm@aristanetworks.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 13:16:13 -07:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: Check return of dev_set_allmulti allmulti might overflow. Commit: "netdevice: Fix promiscuity and allmulti overflow" in net-next makes dev_set_promiscuity/allmulti return error number if overflow happened. Here, we check the positive increment for allmulti to get error return. Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-14 20:57:07 -07:00
net: move address list functions to a separate file +little renaming of unicast functions to be smooth with multicast ones Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-01 21:22:09 +00:00
macvlan: Check return of dev_set_allmulti allmulti might overflow. Commit: "netdevice: Fix promiscuity and allmulti overflow" in net-next makes dev_set_promiscuity/allmulti return error number if overflow happened. Here, we check the positive increment for allmulti to get error return. Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-14 20:57:07 -07:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: Introduce 'passthru' mode to takeover the underlying device With the current default 'vepa' mode, a KVM guest using virtio with macvtap backend has the following limitations. - cannot change/add a mac address on the guest virtio-net - cannot create a vlan device on the guest virtio-net - cannot enable promiscuous mode on guest virtio-net To address these limitations, this patch introduces a new mode called 'passthru' when creating a macvlan device which allows takeover of the underlying device and passing it to a guest using virtio with macvtap backend. Only one macvlan device is allowed in passthru mode and it inherits the mac address from the underlying device and sets it in promiscuous mode to receive and forward all the packets. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> ------------------------------------------------------------------------- Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-28 13:10:50 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
net: move address list functions to a separate file +little renaming of unicast functions to be smooth with multicast ones Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-01 21:22:09 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: Introduce 'passthru' mode to takeover the underlying device With the current default 'vepa' mode, a KVM guest using virtio with macvtap backend has the following limitations. - cannot change/add a mac address on the guest virtio-net - cannot create a vlan device on the guest virtio-net - cannot enable promiscuous mode on guest virtio-net To address these limitations, this patch introduces a new mode called 'passthru' when creating a macvlan device which allows takeover of the underlying device and passing it to a guest using virtio with macvtap backend. Only one macvlan device is allowed in passthru mode and it inherits the mac address from the underlying device and sets it in promiscuous mode to receive and forward all the packets. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> ------------------------------------------------------------------------- Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-28 13:10:50 +00:00
macvlan: remove one synchronize_rcu() call When one macvlan device is dismantled, we can avoid one synchronize_rcu() call done after deletion from hash list, since caller will perform a synchronize_net() call after its ndo_stop() call. Add a new netdev->dismantle field to signal this dismantle intent. Reduces RTNL hold time. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Patrick McHardy <kaber@trash.net> CC: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-19 12:24:16 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
[MACVLAN]: Allow setting mac address while device is up Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-19 22:00:42 -08:00
macvlan: Deterministic ingress packet delivery Changing the mac address when a macvlan device is up will leave the device on the wrong hash chain making it impossible to receive packets. There is no checking of the mac address set on the macvlan. Allowing a misconfiguration to grab packets from the the underlying device or another macvlan. To resolve these problems I update the hash table of macvlans when the mac address of a macvlan changes, and when updating the hash table I verify that the new mac address is usable. The result is well defined and predictable if not perfect handling of mac vlan mac addresses. To keep the code clear I have created a set of hash table maintenance in macvlan so I am not open coding the hash function and the logic needed to update the hash table all over the place. Signed-off-by: Eric Biederman <ebiederm@aristanetworks.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 13:16:13 -07:00
[MACVLAN]: Allow setting mac address while device is up Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-19 22:00:42 -08:00
net: move address list functions to a separate file +little renaming of unicast functions to be smooth with multicast ones Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-01 21:22:09 +00:00
net: convert unicast addr list This patch converts unicast address list to standard list_head using previously introduced struct netdev_hw_addr. It also relaxes the locking. Original spinlock (still used for multicast addresses) is not needed and is no longer used for a protection of this list. All reading and writing takes place under rtnl (with no changes). I also removed a possibility to specify the length of the address while adding or deleting unicast address. It's always dev->addr_len. The convertion touched especially e1000 and ixgbe codes when the change is not so trivial. Signed-off-by: Jiri Pirko <jpirko@redhat.com> drivers/net/bnx2.c | 13 +-- drivers/net/e1000/e1000_main.c | 24 +++-- drivers/net/ixgbe/ixgbe_common.c | 14 ++-- drivers/net/ixgbe/ixgbe_common.h | 4 +- drivers/net/ixgbe/ixgbe_main.c | 6 +- drivers/net/ixgbe/ixgbe_type.h | 4 +- drivers/net/macvlan.c | 11 +- drivers/net/mv643xx_eth.c | 11 +- drivers/net/niu.c | 7 +- drivers/net/virtio_net.c | 7 +- drivers/s390/net/qeth_l2_main.c | 6 +- drivers/scsi/fcoe/fcoe.c | 16 ++-- include/linux/netdevice.h | 18 ++-- net/8021q/vlan.c | 4 +- net/8021q/vlan_dev.c | 10 +- net/core/dev.c | 195 +++++++++++++++++++++++++++----------- net/dsa/slave.c | 10 +- net/packet/af_packet.c | 4 +- 18 files changed, 227 insertions(+), 137 deletions(-) Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-22 23:22:17 +00:00
macvlan: Deterministic ingress packet delivery Changing the mac address when a macvlan device is up will leave the device on the wrong hash chain making it impossible to receive packets. There is no checking of the mac address set on the macvlan. Allowing a misconfiguration to grab packets from the the underlying device or another macvlan. To resolve these problems I update the hash table of macvlans when the mac address of a macvlan changes, and when updating the hash table I verify that the new mac address is usable. The result is well defined and predictable if not perfect handling of mac vlan mac addresses. To keep the code clear I have created a set of hash table maintenance in macvlan so I am not open coding the hash function and the logic needed to update the hash table all over the place. Signed-off-by: Eric Biederman <ebiederm@aristanetworks.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 13:16:13 -07:00
[MACVLAN]: Allow setting mac address while device is up Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-19 22:00:42 -08:00
net: move address list functions to a separate file +little renaming of unicast functions to be smooth with multicast ones Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-01 21:22:09 +00:00
macvlan: Deterministic ingress packet delivery Changing the mac address when a macvlan device is up will leave the device on the wrong hash chain making it impossible to receive packets. There is no checking of the mac address set on the macvlan. Allowing a misconfiguration to grab packets from the the underlying device or another macvlan. To resolve these problems I update the hash table of macvlans when the mac address of a macvlan changes, and when updating the hash table I verify that the new mac address is usable. The result is well defined and predictable if not perfect handling of mac vlan mac addresses. To keep the code clear I have created a set of hash table maintenance in macvlan so I am not open coding the hash function and the logic needed to update the hash table all over the place. Signed-off-by: Eric Biederman <ebiederm@aristanetworks.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 13:16:13 -07:00
[MACVLAN]: Allow setting mac address while device is up Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-19 22:00:42 -08:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
netdev: Handle ->addr_list_lock just like ->_xmit_lock for lockdep. The new address list lock needs to handle the same device layering issues that the _xmit_lock one does. This integrates work done by Patrick McHardy. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-22 14:16:42 -07:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: add VLAN filters to lowerdev Stacking VLANs on top of the macvlan device does not work if the lowerdev device is using vlan filters set by NETIF_F_HW_VLAN_FILTER. Add ndo ops to pass vlan calls to lowerdev. Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-06 04:27:16 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
netdev: Allocate multiple queues for TX. alloc_netdev_mq() now allocates an array of netdev_queue structures for TX, based upon the queue_count argument. Furthermore, all accesses to the TX queues are now vectored through the netdev_get_tx_queue() and netdev_for_each_tx_queue() interfaces. This makes it easy to grep the tree for all things that want to get to a TX queue of a net device. Problem spots which are not really multiqueue aware yet, and only work with one queue, can easily be spotted by grepping for all netdev_get_tx_queue() calls that pass in a zero index. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-17 00:34:19 -07:00
netdev: Move _xmit_lock and xmit_lock_owner into netdev_queue. Accesses are mostly structured such that when there are multiple TX queues the code transformations will be a little bit simpler. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 23:13:53 -07:00
netdev: Handle ->addr_list_lock just like ->_xmit_lock for lockdep. The new address list lock needs to handle the same device layering issues that the _xmit_lock one does. This integrates work done by Patrick McHardy. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-22 14:16:42 -07:00
netdev: Allocate multiple queues for TX. alloc_netdev_mq() now allocates an array of netdev_queue structures for TX, based upon the queue_count argument. Furthermore, all accesses to the TX queues are now vectored through the netdev_get_tx_queue() and netdev_for_each_tx_queue() interfaces. This makes it easy to grep the tree for all things that want to get to a TX queue of a net device. Problem spots which are not really multiqueue aware yet, and only work with one queue, can easily be spotted by grepping for all netdev_get_tx_queue() calls that pass in a zero index. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-17 00:34:19 -07:00
netdev: Move _xmit_lock and xmit_lock_owner into netdev_queue. Accesses are mostly structured such that when there are multiple TX queues the code transformations will be a little bit simpler. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 23:13:53 -07:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: lockless tx path macvlan is a stacked device, like tunnels. We should use the lockless mechanism we are using in tunnels and loopback. This patch completely removes locking in TX path. tx stat counters are added into existing percpu stat structure, renamed from rx_stats to pcpu_stats. Note : this reverts commit 2c11455321f37 (macvlan: add multiqueue capability) Note : rx_errors converted to a 32bit counter, like tx_dropped, since they dont need 64bit range. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Patrick McHardy <kaber@trash.net> Cc: Ben Greear <greearb@candelatech.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-10 21:14:04 +00:00
macvlan: fix gso_max_size setting gso_max_size must be set based on the value of the underlying device to support devices not using the full 64k. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-23 14:18:53 -08:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
drivers/net/macvlan.c: fix cloning of tagged VLAN interfaces Addresses http://bugzilla.kernel.org/show_bug.cgi?id=13348 akpm: the reporter disappeared, so I typed it in again. It is not possible to make clone of tagged VLAN interface to be used as mac-based vlan interfave. How reproducible: Use any 802.1q tagged vlan interface, e.g. eth2.700 and clone it: ip link add link eth2.700 address 00:04:75:cb:38:09 macvlan0 type macvlan ip link set dev macvlan0 up ip addr add 10.195.1.1/24 dev macvlan0 So far, so good. Now try to ping anything via macvlan0: ping 10.195.1.2 Actual results: For every attempted packet tx kernel writes to console: ------------[ cut here ]------------ WARNING: at net/8021q/vlan_dev.c:254 vlan_dev_hard_header+0x36/0x126 [8021q]() Hardware name: M22ES Modules linked in: arptable_filter arp_tables bridge veth macvlan arc4 ecb ppp_mppe ppp_async crc_ccitt ppp_generic slhc autofs4 sunrpc 8021q garp stp ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack xt_tcpudp x_tables dm_mirror dm_region_hash dm_log dm_multipath dm_mod sbs sbshc lp floppy snd_intel8x0 joydev snd_seq_dummy snd_intel8x0m snd_ac97_codec ide_cd_mod ac97_bus snd_seq_oss cdrom snd_seq_midi_event serio_raw snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss parport_pc snd_pcm parport battery 8139cp snd_timer i2c_sis96x ac button snd rtc_cmos rtc_core 8139too soundcore rtc_lib mii i2c_core pcspkr snd_page_alloc pata_sis libata sd_mod scsi_mod ext3 jbd ehci_hcd ohci_hcd uhci_hcd [last unloaded: ip_tables] Pid: 0, comm: swapper Tainted: G W 2.6.29.3 #1 Call Trace: [<c0425f48>] warn_slowpath+0x60/0x9f [<c0425f6f>] warn_slowpath+0x87/0x9f [<dffb850d>] vlan_dev_hard_header+0x0/0x126 [8021q] [<dffb8543>] vlan_dev_hard_header+0x36/0x126 [8021q] [<dffb850d>] vlan_dev_hard_header+0x0/0x126 [8021q] [<df83155d>] macvlan_hard_header+0x3c/0x47 [macvlan] [<df831521>] macvlan_hard_header+0x0/0x47 [macvlan] [<c062bf3f>] arp_create+0xef/0x1ff [<c062c08c>] arp_send+0x3d/0x54 [<c062c916>] arp_solicit+0x16c/0x177 [<c05fadd2>] neigh_timer_handler+0x227/0x269 [<c05fabab>] neigh_timer_handler+0x0/0x269 [<c042ce4d>] run_timer_softirq+0xf0/0x141 [<c0429e5a>] __do_softirq+0x76/0xf8 [<c0429de4>] __do_softirq+0x0/0xf8 <IRQ> [<c044fb67>] handle_level_irq+0x0/0xad [<c0429db7>] irq_exit+0x35/0x62 [<c04046bb>] do_IRQ+0xdf/0xf4 [<c04035a7>] common_interrupt+0x27/0x2c [<c04079c5>] default_idle+0x2a/0x3d [<c0401bb6>] cpu_idle+0x57/0x70 Macvlan driver always uses standard ethernet header length for all types of interface to which it is linked. This patch fixes this problem. Reported-by: <sg.tweak@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: "David S. Miller" <davem@davemloft.net> Cc: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-10 09:55:02 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
netdev: Move _xmit_lock and xmit_lock_owner into netdev_queue. Accesses are mostly structured such that when there are multiple TX queues the code transformations will be a little bit simpler. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 23:13:53 -07:00
macvlan: lockless tx path macvlan is a stacked device, like tunnels. We should use the lockless mechanism we are using in tunnels and loopback. This patch completely removes locking in TX path. tx stat counters are added into existing percpu stat structure, renamed from rx_stats to pcpu_stats. Note : this reverts commit 2c11455321f37 (macvlan: add multiqueue capability) Note : rx_errors converted to a 32bit counter, like tx_dropped, since they dont need 64bit range. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Patrick McHardy <kaber@trash.net> Cc: Ben Greear <greearb@candelatech.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-10 21:14:04 +00:00
macvlan: Precise RX stats accounting With multi queue devices, its possible that several cpus call macvlan RX routines simultaneously for the same macvlan device. We update RX stats counter without any locking, so we can get slightly wrong counters. One possible fix is to use percpu counters, to get precise accounting and also get guarantee of no cache line ping pongs between cpus. Note: this adds 16 bytes (32 bytes on 64bit arches) of percpu data per macvlan device. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-17 08:53:49 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: Precise RX stats accounting With multi queue devices, its possible that several cpus call macvlan RX routines simultaneously for the same macvlan device. We update RX stats counter without any locking, so we can get slightly wrong counters. One possible fix is to use percpu counters, to get precise accounting and also get guarantee of no cache line ping pongs between cpus. Note: this adds 16 bytes (32 bytes on 64bit arches) of percpu data per macvlan device. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-17 08:53:49 +00:00
macvlan: Fix use after free of struct macvlan_port. When the macvlan driver was extended to call unregisgter_netdevice_queue in 23289a37e2b127dfc4de1313fba15bb4c9f0cd5b, a use after free of struct macvlan_port was introduced. The code in dellink relied on unregister_netdevice actually unregistering the net device so it would be safe to free macvlan_port. Since unregister_netdevice_queue can just queue up the unregister instead of performing the unregiser immediately we free the macvlan_port too soon and then the code in macvlan_stop removes the macaddress for the set of macaddress to listen for and uses memory that has already been freed. To fix this add a reference count to track when it is safe to free the macvlan_port and move the call of macvlan_port_destroy into macvlan_uninit which is guaranteed to be called after the final macvlan_port_close. Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-21 18:22:22 -07:00
macvlan: Precise RX stats accounting With multi queue devices, its possible that several cpus call macvlan RX routines simultaneously for the same macvlan device. We update RX stats counter without any locking, so we can get slightly wrong counters. One possible fix is to use percpu counters, to get precise accounting and also get guarantee of no cache line ping pongs between cpus. Note: this adds 16 bytes (32 bytes on 64bit arches) of percpu data per macvlan device. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-17 08:53:49 +00:00
macvlan: lockless tx path macvlan is a stacked device, like tunnels. We should use the lockless mechanism we are using in tunnels and loopback. This patch completely removes locking in TX path. tx stat counters are added into existing percpu stat structure, renamed from rx_stats to pcpu_stats. Note : this reverts commit 2c11455321f37 (macvlan: add multiqueue capability) Note : rx_errors converted to a 32bit counter, like tx_dropped, since they dont need 64bit range. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Patrick McHardy <kaber@trash.net> Cc: Ben Greear <greearb@candelatech.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-10 21:14:04 +00:00
macvlan: Fix use after free of struct macvlan_port. When the macvlan driver was extended to call unregisgter_netdevice_queue in 23289a37e2b127dfc4de1313fba15bb4c9f0cd5b, a use after free of struct macvlan_port was introduced. The code in dellink relied on unregister_netdevice actually unregistering the net device so it would be safe to free macvlan_port. Since unregister_netdevice_queue can just queue up the unregister instead of performing the unregiser immediately we free the macvlan_port too soon and then the code in macvlan_stop removes the macaddress for the set of macaddress to listen for and uses memory that has already been freed. To fix this add a reference count to track when it is safe to free the macvlan_port and move the call of macvlan_port_destroy into macvlan_uninit which is guaranteed to be called after the final macvlan_port_close. Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-21 18:22:22 -07:00
macvlan: Precise RX stats accounting With multi queue devices, its possible that several cpus call macvlan RX routines simultaneously for the same macvlan device. We update RX stats counter without any locking, so we can get slightly wrong counters. One possible fix is to use percpu counters, to get precise accounting and also get guarantee of no cache line ping pongs between cpus. Note: this adds 16 bytes (32 bytes on 64bit arches) of percpu data per macvlan device. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-17 08:53:49 +00:00
net: fix 64 bit counters on 32 bit arches There is a small possibility that a reader gets incorrect values on 32 bit arches. SNMP applications could catch incorrect counters when a 32bit high part is changed by another stats consumer/provider. One way to solve this is to add a rtnl_link_stats64 param to all ndo_get_stats64() methods, and also add such a parameter to dev_get_stats(). Rule is that we are not allowed to use dev->stats64 as a temporary storage for 64bit stats, but a caller provided area (usually on stack) Old drivers (only providing get_stats() method) need no changes. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-07 14:58:56 -07:00
macvlan: Precise RX stats accounting With multi queue devices, its possible that several cpus call macvlan RX routines simultaneously for the same macvlan device. We update RX stats counter without any locking, so we can get slightly wrong counters. One possible fix is to use percpu counters, to get precise accounting and also get guarantee of no cache line ping pongs between cpus. Note: this adds 16 bytes (32 bytes on 64bit arches) of percpu data per macvlan device. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-17 08:53:49 +00:00
macvlan: lockless tx path macvlan is a stacked device, like tunnels. We should use the lockless mechanism we are using in tunnels and loopback. This patch completely removes locking in TX path. tx stat counters are added into existing percpu stat structure, renamed from rx_stats to pcpu_stats. Note : this reverts commit 2c11455321f37 (macvlan: add multiqueue capability) Note : rx_errors converted to a 32bit counter, like tx_dropped, since they dont need 64bit range. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Patrick McHardy <kaber@trash.net> Cc: Ben Greear <greearb@candelatech.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-10 21:14:04 +00:00
macvlan: 64 bit rx counters Use u64_stats_sync infrastructure to implement 64bit stats. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-24 00:54:21 +00:00
macvlan: Precise RX stats accounting With multi queue devices, its possible that several cpus call macvlan RX routines simultaneously for the same macvlan device. We update RX stats counter without any locking, so we can get slightly wrong counters. One possible fix is to use percpu counters, to get precise accounting and also get guarantee of no cache line ping pongs between cpus. Note: this adds 16 bytes (32 bytes on 64bit arches) of percpu data per macvlan device. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-17 08:53:49 +00:00
macvlan: lockless tx path macvlan is a stacked device, like tunnels. We should use the lockless mechanism we are using in tunnels and loopback. This patch completely removes locking in TX path. tx stat counters are added into existing percpu stat structure, renamed from rx_stats to pcpu_stats. Note : this reverts commit 2c11455321f37 (macvlan: add multiqueue capability) Note : rx_errors converted to a 32bit counter, like tx_dropped, since they dont need 64bit range. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Patrick McHardy <kaber@trash.net> Cc: Ben Greear <greearb@candelatech.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-10 21:14:04 +00:00
macvlan: 64 bit rx counters Use u64_stats_sync infrastructure to implement 64bit stats. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-24 00:54:21 +00:00
macvlan: lockless tx path macvlan is a stacked device, like tunnels. We should use the lockless mechanism we are using in tunnels and loopback. This patch completely removes locking in TX path. tx stat counters are added into existing percpu stat structure, renamed from rx_stats to pcpu_stats. Note : this reverts commit 2c11455321f37 (macvlan: add multiqueue capability) Note : rx_errors converted to a 32bit counter, like tx_dropped, since they dont need 64bit range. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Patrick McHardy <kaber@trash.net> Cc: Ben Greear <greearb@candelatech.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-10 21:14:04 +00:00
macvlan: 64 bit rx counters Use u64_stats_sync infrastructure to implement 64bit stats. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-24 00:54:21 +00:00
macvlan: lockless tx path macvlan is a stacked device, like tunnels. We should use the lockless mechanism we are using in tunnels and loopback. This patch completely removes locking in TX path. tx stat counters are added into existing percpu stat structure, renamed from rx_stats to pcpu_stats. Note : this reverts commit 2c11455321f37 (macvlan: add multiqueue capability) Note : rx_errors converted to a 32bit counter, like tx_dropped, since they dont need 64bit range. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Patrick McHardy <kaber@trash.net> Cc: Ben Greear <greearb@candelatech.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-10 21:14:04 +00:00
macvlan: Precise RX stats accounting With multi queue devices, its possible that several cpus call macvlan RX routines simultaneously for the same macvlan device. We update RX stats counter without any locking, so we can get slightly wrong counters. One possible fix is to use percpu counters, to get precise accounting and also get guarantee of no cache line ping pongs between cpus. Note: this adds 16 bytes (32 bytes on 64bit arches) of percpu data per macvlan device. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-17 08:53:49 +00:00
macvlan: lockless tx path macvlan is a stacked device, like tunnels. We should use the lockless mechanism we are using in tunnels and loopback. This patch completely removes locking in TX path. tx stat counters are added into existing percpu stat structure, renamed from rx_stats to pcpu_stats. Note : this reverts commit 2c11455321f37 (macvlan: add multiqueue capability) Note : rx_errors converted to a 32bit counter, like tx_dropped, since they dont need 64bit range. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Patrick McHardy <kaber@trash.net> Cc: Ben Greear <greearb@candelatech.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-10 21:14:04 +00:00
macvlan: Precise RX stats accounting With multi queue devices, its possible that several cpus call macvlan RX routines simultaneously for the same macvlan device. We update RX stats counter without any locking, so we can get slightly wrong counters. One possible fix is to use percpu counters, to get precise accounting and also get guarantee of no cache line ping pongs between cpus. Note: this adds 16 bytes (32 bytes on 64bit arches) of percpu data per macvlan device. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-17 08:53:49 +00:00
macvlan: add VLAN filters to lowerdev Stacking VLANs on top of the macvlan device does not work if the lowerdev device is using vlan filters set by NETIF_F_HW_VLAN_FILTER. Add ndo ops to pass vlan calls to lowerdev. Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-06 04:27:16 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: add support for ethtool get settings If macvlan's are used, it is useful to propgate speed and other settings from underlying device up for application usage. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-29 15:31:53 -07:00
net: consolidate and fix ethtool_ops->get_settings calling This patch does several things: - introduces __ethtool_get_settings which is called from ethtool code and from drivers as well. Put ASSERT_RTNL there. - dev_ethtool_get_settings() is replaced by __ethtool_get_settings() - changes calling in drivers so rtnl locking is respected. In iboe_get_rate was previously ->get_settings() called unlocked. This fixes it. Also prb_calc_retire_blk_tmo() in af_packet.c had the same problem. Also fixed by calling __dev_get_by_index() instead of dev_get_by_index() and holding rtnl_lock for both calls. - introduces rtnl_lock in bnx2fc_vport_create() and fcoe_vport_create() so bnx2fc_if_create() and fcoe_if_create() are called locked as they are from other places. - use __ethtool_get_settings() in bonding code Signed-off-by: Jiri Pirko <jpirko@redhat.com> v2->v3: -removed dev_ethtool_get_settings() -added ASSERT_RTNL into __ethtool_get_settings() -prb_calc_retire_blk_tmo - use __dev_get_by_index() and lock around it and __ethtool_get_settings() call v1->v2: add missing export_symbol Reviewed-by: Ben Hutchings <bhutchings@solarflare.com> [except FCoE bits] Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-09-03 03:34:30 +00:00
macvlan: add support for ethtool get settings If macvlan's are used, it is useful to propgate speed and other settings from underlying device up for application usage. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-29 15:31:53 -07:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: add support for ethtool get settings If macvlan's are used, it is useful to propgate speed and other settings from underlying device up for application usage. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-29 15:31:53 -07:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: convert to net_device_ops Convert to net_device_ops function table. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19 21:51:06 -08:00
macvlan: Precise RX stats accounting With multi queue devices, its possible that several cpus call macvlan RX routines simultaneously for the same macvlan device. We update RX stats counter without any locking, so we can get slightly wrong counters. One possible fix is to use percpu counters, to get precise accounting and also get guarantee of no cache line ping pongs between cpus. Note: this adds 16 bytes (32 bytes on 64bit arches) of percpu data per macvlan device. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-17 08:53:49 +00:00
macvlan: convert to net_device_ops Convert to net_device_ops function table. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19 21:51:06 -08:00
netdev: add more functions to netdevice ops This patch moves neigh_setup and hard_start_xmit into the network device ops structure. For bisection, fix all the previously converted drivers as well. Bonding driver took the biggest hit on this. Added a prefetch of the hard_start_xmit in the fast path to try and reduce any impact this would have. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-20 20:14:53 -08:00
macvlan: convert to net_device_ops Convert to net_device_ops function table. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19 21:51:06 -08:00
net: remove use of ndo_set_multicast_list in drivers replace it by ndo_set_rx_mode Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-16 06:29:01 +00:00
macvlan: 64 bit rx counters Use u64_stats_sync infrastructure to implement 64bit stats. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-24 00:54:21 +00:00
macvlan: convert to net_device_ops Convert to net_device_ops function table. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19 21:51:06 -08:00
macvlan: add VLAN filters to lowerdev Stacking VLANs on top of the macvlan device does not work if the lowerdev device is using vlan filters set by NETIF_F_HW_VLAN_FILTER. Add ndo ops to pass vlan calls to lowerdev. Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-06 04:27:16 +00:00
macvlan: convert to net_device_ops Convert to net_device_ops function table. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19 21:51:06 -08:00
macvtap: Limit packet queue length Mark Wagner reported OOM symptoms when sending UDP traffic over a macvtap link to a kvm receiver. This appears to be caused by the fact that macvtap packet queues are unlimited in length. This means that if the receiver can't keep up with the rate of flow, then we will hit OOM. Of course it gets worse if the OOM killer then decides to kill the receiver. This patch imposes a cap on the packet queue length, in the same way as the tuntap driver, using the device TX queue length. Please note that macvtap currently has no way of giving congestion notification, that means the software device TX queue cannot be used and packets will always be dropped once the macvtap driver queue fills up. This shouldn't be a great problem for the scenario where macvtap is used to feed a kvm receiver, as the traffic is most likely external in origin so congestion notification can't be applied anyway. Of course, if anybody decides to complain about guest-to-guest UDP packet loss down the track, then we may have to revisit this. Incidentally, this patch also fixes a real memory leak when macvtap_get_queue fails. Chris Wright noticed that for this patch to work, we need a non-zero TX queue length. This patch includes his work to change the default macvtap TX queue length to 500. Reported-by: Mark Wagner <mwagner@redhat.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Chris Wright <chrisw@sous-sol.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-21 21:44:31 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
net: Audit drivers to identify those needing IFF_TX_SKB_SHARING cleared After the last patch, We are left in a state in which only drivers calling ether_setup have IFF_TX_SKB_SHARING set (we assume that drivers touching real hardware call ether_setup for their net_devices and don't hold any state in their skbs. There are a handful of drivers that violate this assumption of course, and need to be fixed up. This patch identifies those drivers, and marks them as not being able to support the safe transmission of skbs by clearning the IFF_TX_SKB_SHARING flag in priv_flags Signed-off-by: Neil Horman <nhorman@tuxdriver.com> CC: Karsten Keil <isdn@linux-pingi.de> CC: "David S. Miller" <davem@davemloft.net> CC: Jay Vosburgh <fubar@us.ibm.com> CC: Andy Gospodarek <andy@greyhouse.net> CC: Patrick McHardy <kaber@trash.net> CC: Krzysztof Halasa <khc@pm.waw.pl> CC: "John W. Linville" <linville@tuxdriver.com> CC: Greg Kroah-Hartman <gregkh@suse.de> CC: Marcel Holtmann <marcel@holtmann.org> CC: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-26 06:05:38 +00:00
macvlan: convert to net_device_ops Convert to net_device_ops function table. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19 21:51:06 -08:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
[NET]: Move hardware header operations out of netdevice. Since hardware header operations are part of the protocol class not the device instance, make them into a separate object and save memory. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-09 01:40:57 -07:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvtap: Limit packet queue length Mark Wagner reported OOM symptoms when sending UDP traffic over a macvtap link to a kvm receiver. This appears to be caused by the fact that macvtap packet queues are unlimited in length. This means that if the receiver can't keep up with the rate of flow, then we will hit OOM. Of course it gets worse if the OOM killer then decides to kill the receiver. This patch imposes a cap on the packet queue length, in the same way as the tuntap driver, using the device TX queue length. Please note that macvtap currently has no way of giving congestion notification, that means the software device TX queue cannot be used and packets will always be dropped once the macvtap driver queue fills up. This shouldn't be a great problem for the scenario where macvtap is used to feed a kvm receiver, as the traffic is most likely external in origin so congestion notification can't be applied anyway. Of course, if anybody decides to complain about guest-to-guest UDP packet loss down the track, then we may have to revisit this. Incidentally, this patch also fixes a real memory leak when macvtap_get_queue fails. Chris Wright noticed that for this patch to work, we need a non-zero TX queue length. This patch includes his work to change the default macvtap TX queue length to 500. Reported-by: Mark Wagner <mwagner@redhat.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Chris Wright <chrisw@sous-sol.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-21 21:44:31 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
net: replace hooks in __netif_receive_skb V5 What this patch does is it removes two receive frame hooks (for bridge and for macvlan) from __netif_receive_skb. These are replaced them with a single hook for both. It only supports one hook per device because it makes no sense to do bridging and macvlan on the same device. Then a network driver (of virtual netdev like macvlan or bridge) can register an rx_handler for needed net device. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-01 21:52:08 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: Introduce 'passthru' mode to takeover the underlying device With the current default 'vepa' mode, a KVM guest using virtio with macvtap backend has the following limitations. - cannot change/add a mac address on the guest virtio-net - cannot create a vlan device on the guest virtio-net - cannot enable promiscuous mode on guest virtio-net To address these limitations, this patch introduces a new mode called 'passthru' when creating a macvlan device which allows takeover of the underlying device and passing it to a guest using virtio with macvtap backend. Only one macvlan device is allowed in passthru mode and it inherits the mac address from the underlying device and sets it in promiscuous mode to receive and forward all the packets. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> ------------------------------------------------------------------------- Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-28 13:10:50 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
net: replace hooks in __netif_receive_skb V5 What this patch does is it removes two receive frame hooks (for bridge and for macvlan) from __netif_receive_skb. These are replaced them with a single hook for both. It only supports one hook per device because it makes no sense to do bridging and macvlan on the same device. Then a network driver (of virtual netdev like macvlan or bridge) can register an rx_handler for needed net device. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-01 21:52:08 +00:00
macvlan: use rx_handler_data pointer to store macvlan_port pointer V2 Register macvlan_port pointer as rx_handler data pointer. As macvlan_port is removed from struct net_device, another netdev priv_flag is added to indicate the device serves as a macvlan port. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-15 03:27:57 +00:00
net: replace hooks in __netif_receive_skb V5 What this patch does is it removes two receive frame hooks (for bridge and for macvlan) from __netif_receive_skb. These are replaced them with a single hook for both. It only supports one hook per device because it makes no sense to do bridging and macvlan on the same device. Then a network driver (of virtual netdev like macvlan or bridge) can register an rx_handler for needed net device. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-01 21:52:08 +00:00
macvlan: fix panic if lowerdev in a bond commit a35e2c1b6d905 (macvlan: use rx_handler_data pointer to store macvlan_port pointer V2) added a bug in macvlan_port_create() Steps to reproduce the bug: # ifenslave bond0 eth0 eth1 # ip link add link eth0 up name eth0#1 type macvlan ->error EBUSY # ip link add link eth0 up name eth0#1 type macvlan ->panic Fix: Dont set IFF_MACVLAN_PORT in error case. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-20 14:59:23 -04:00
net: replace hooks in __netif_receive_skb V5 What this patch does is it removes two receive frame hooks (for bridge and for macvlan) from __netif_receive_skb. These are replaced them with a single hook for both. It only supports one hook per device because it makes no sense to do bridging and macvlan on the same device. Then a network driver (of virtual netdev like macvlan or bridge) can register an rx_handler for needed net device. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-01 21:52:08 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: use rx_handler_data pointer to store macvlan_port pointer V2 Register macvlan_port pointer as rx_handler data pointer. As macvlan_port is removed from struct net_device, another netdev priv_flag is added to indicate the device serves as a macvlan port. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-15 03:27:57 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: use rx_handler_data pointer to store macvlan_port pointer V2 Register macvlan_port pointer as rx_handler data pointer. As macvlan_port is removed from struct net_device, another netdev priv_flag is added to indicate the device serves as a macvlan port. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-15 03:27:57 +00:00
net: replace hooks in __netif_receive_skb V5 What this patch does is it removes two receive frame hooks (for bridge and for macvlan) from __netif_receive_skb. These are replaced them with a single hook for both. It only supports one hook per device because it makes no sense to do bridging and macvlan on the same device. Then a network driver (of virtual netdev like macvlan or bridge) can register an rx_handler for needed net device. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-01 21:52:08 +00:00
macvlan,rcu: convert call_rcu(macvlan_port_rcu_free) to kfree_rcu() The rcu callback macvlan_port_rcu_free() just calls a kfree(), so we use kfree_rcu() instead of the call_rcu(macvlan_port_rcu_free). Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2011-03-18 12:00:07 +08:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: export macvlan mode through netlink In order to support all three modes of macvlan at runtime, extend the existing netlink protocol to allow choosing the mode per macvlan slave interface. This depends on a matching patch to iproute2 in order to become accessible in user land. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:11 +00:00
macvlan: Introduce 'passthru' mode to takeover the underlying device With the current default 'vepa' mode, a KVM guest using virtio with macvtap backend has the following limitations. - cannot change/add a mac address on the guest virtio-net - cannot create a vlan device on the guest virtio-net - cannot enable promiscuous mode on guest virtio-net To address these limitations, this patch introduces a new mode called 'passthru' when creating a macvlan device which allows takeover of the underlying device and passing it to a guest using virtio with macvtap backend. Only one macvlan device is allowed in passthru mode and it inherits the mac address from the underlying device and sets it in promiscuous mode to receive and forward all the packets. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> ------------------------------------------------------------------------- Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-28 13:10:50 +00:00
macvlan: export macvlan mode through netlink In order to support all three modes of macvlan at runtime, extend the existing netlink protocol to allow choosing the mode per macvlan slave interface. This depends on a matching patch to iproute2 in order to become accessible in user land. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:11 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: allow multiple driver backends This makes it possible to hook into the macvlan driver from another kernel module. In particular, the goal is to extend it with the macvtap backend that provides a tun/tap compatible interface directly on the macvlan device. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-30 12:23:40 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
net: Support specifying the network namespace upon device creation. There is no good reason to not support userspace specifying the network namespace during device creation, and it makes it easier to create a network device and pass it to a child network namespace with a well known name. We have to be careful to ensure that the target network namespace for the new device exists through the life of the call. To keep that logic clear I have factored out the network namespace grabbing logic into rtnl_link_get_net. In addtion we need to continue to pass the source network namespace to the rtnl_link_ops.newlink method so that we can find the base device source network namespace. Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
2009-11-08 00:53:51 -08:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: Support creating macvlans from macvlans When running in a network namespace whose only link to the outside world is a macvlan device, not being able to create another macvlan is a real pain. So modify macvlan creation to allow automatically forward a creation of a macvlan on a macvlan to become a creation of a macvlan on the underlying network device. Signed-off-by: Eric Biederman <ebiederm@aristanetworks.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 13:15:37 -07:00
[MACVLAN]: Prevent nesting macvlan devices Don't allow to nest macvlan devices since it will cause lockdep warnings and isn't really useful for anything. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-10 22:39:28 -08:00
macvlan: Support creating macvlans from macvlans When running in a network namespace whose only link to the outside world is a macvlan device, not being able to create another macvlan is a real pain. So modify macvlan creation to allow automatically forward a creation of a macvlan on a macvlan to become a creation of a macvlan on the underlying network device. Signed-off-by: Eric Biederman <ebiederm@aristanetworks.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 13:15:37 -07:00
[MACVLAN]: Prevent nesting macvlan devices Don't allow to nest macvlan devices since it will cause lockdep warnings and isn't really useful for anything. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-10 22:39:28 -08:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: use rx_handler_data pointer to store macvlan_port pointer V2 Register macvlan_port pointer as rx_handler data pointer. As macvlan_port is removed from struct net_device, another netdev priv_flag is added to indicate the device serves as a macvlan port. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-15 03:27:57 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: use rx_handler_data pointer to store macvlan_port pointer V2 Register macvlan_port pointer as rx_handler data pointer. As macvlan_port is removed from struct net_device, another netdev priv_flag is added to indicate the device serves as a macvlan port. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-15 03:27:57 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: Introduce 'passthru' mode to takeover the underlying device With the current default 'vepa' mode, a KVM guest using virtio with macvtap backend has the following limitations. - cannot change/add a mac address on the guest virtio-net - cannot create a vlan device on the guest virtio-net - cannot enable promiscuous mode on guest virtio-net To address these limitations, this patch introduces a new mode called 'passthru' when creating a macvlan device which allows takeover of the underlying device and passing it to a guest using virtio with macvtap backend. Only one macvlan device is allowed in passthru mode and it inherits the mac address from the underlying device and sets it in promiscuous mode to receive and forward all the packets. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> ------------------------------------------------------------------------- Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-28 13:10:50 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: allow multiple driver backends This makes it possible to hook into the macvlan driver from another kernel module. In particular, the goal is to extend it with the macvtap backend that provides a tun/tap compatible interface directly on the macvlan device. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-30 12:23:40 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: export macvlan mode through netlink In order to support all three modes of macvlan at runtime, extend the existing netlink protocol to allow choosing the mode per macvlan slave interface. This depends on a matching patch to iproute2 in order to become accessible in user land. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:11 +00:00
macvlan: Introduce 'passthru' mode to takeover the underlying device With the current default 'vepa' mode, a KVM guest using virtio with macvtap backend has the following limitations. - cannot change/add a mac address on the guest virtio-net - cannot create a vlan device on the guest virtio-net - cannot enable promiscuous mode on guest virtio-net To address these limitations, this patch introduces a new mode called 'passthru' when creating a macvlan device which allows takeover of the underlying device and passing it to a guest using virtio with macvtap backend. Only one macvlan device is allowed in passthru mode and it inherits the mac address from the underlying device and sets it in promiscuous mode to receive and forward all the packets. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> ------------------------------------------------------------------------- Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-28 13:10:50 +00:00
macvlan: Fix use after free of struct macvlan_port. When the macvlan driver was extended to call unregisgter_netdevice_queue in 23289a37e2b127dfc4de1313fba15bb4c9f0cd5b, a use after free of struct macvlan_port was introduced. The code in dellink relied on unregister_netdevice actually unregistering the net device so it would be safe to free macvlan_port. Since unregister_netdevice_queue can just queue up the unregister instead of performing the unregiser immediately we free the macvlan_port too soon and then the code in macvlan_stop removes the macaddress for the set of macaddress to listen for and uses memory that has already been freed. To fix this add a reference count to track when it is safe to free the macvlan_port and move the call of macvlan_port_destroy into macvlan_uninit which is guaranteed to be called after the final macvlan_port_close. Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-21 18:22:22 -07:00
macvlan: Introduce 'passthru' mode to takeover the underlying device With the current default 'vepa' mode, a KVM guest using virtio with macvtap backend has the following limitations. - cannot change/add a mac address on the guest virtio-net - cannot create a vlan device on the guest virtio-net - cannot enable promiscuous mode on guest virtio-net To address these limitations, this patch introduces a new mode called 'passthru' when creating a macvlan device which allows takeover of the underlying device and passing it to a guest using virtio with macvtap backend. Only one macvlan device is allowed in passthru mode and it inherits the mac address from the underlying device and sets it in promiscuous mode to receive and forward all the packets. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> ------------------------------------------------------------------------- Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-28 13:10:50 +00:00
macvlan: Fix use after free of struct macvlan_port. When the macvlan driver was extended to call unregisgter_netdevice_queue in 23289a37e2b127dfc4de1313fba15bb4c9f0cd5b, a use after free of struct macvlan_port was introduced. The code in dellink relied on unregister_netdevice actually unregistering the net device so it would be safe to free macvlan_port. Since unregister_netdevice_queue can just queue up the unregister instead of performing the unregiser immediately we free the macvlan_port too soon and then the code in macvlan_stop removes the macaddress for the set of macaddress to listen for and uses memory that has already been freed. To fix this add a reference count to track when it is safe to free the macvlan_port and move the call of macvlan_port_destroy into macvlan_uninit which is guaranteed to be called after the final macvlan_port_close. Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-21 18:22:22 -07:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: do proper cleanup in macvlan_common_newlink() V2 Fixes possible memory leak. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-24 07:02:25 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
netdevice: provide common routine for macvlan and vlan operstate management Provide common routine for the transition of operational state for a leaf device during a root device transition. Signed-off-by: Patrick Mullaney <pmullaney@novell.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 15:59:22 -08:00
macvlan: do proper cleanup in macvlan_common_newlink() V2 Fixes possible memory leak. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-24 07:02:25 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: do proper cleanup in macvlan_common_newlink() V2 Fixes possible memory leak. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-24 07:02:25 +00:00
macvlan: Fix use after free of struct macvlan_port. When the macvlan driver was extended to call unregisgter_netdevice_queue in 23289a37e2b127dfc4de1313fba15bb4c9f0cd5b, a use after free of struct macvlan_port was introduced. The code in dellink relied on unregister_netdevice actually unregistering the net device so it would be safe to free macvlan_port. Since unregister_netdevice_queue can just queue up the unregister instead of performing the unregiser immediately we free the macvlan_port too soon and then the code in macvlan_stop removes the macaddress for the set of macaddress to listen for and uses memory that has already been freed. To fix this add a reference count to track when it is safe to free the macvlan_port and move the call of macvlan_port_destroy into macvlan_uninit which is guaranteed to be called after the final macvlan_port_close. Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-21 18:22:22 -07:00
macvlan: do proper cleanup in macvlan_common_newlink() V2 Fixes possible memory leak. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-24 07:02:25 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: allow multiple driver backends This makes it possible to hook into the macvlan driver from another kernel module. In particular, the goal is to extend it with the macvtap backend that provides a tun/tap compatible interface directly on the macvlan device. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-30 12:23:40 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: allow multiple driver backends This makes it possible to hook into the macvlan driver from another kernel module. In particular, the goal is to extend it with the macvtap backend that provides a tun/tap compatible interface directly on the macvlan device. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-30 12:23:40 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
net: add a list_head parameter to dellink() method Adding a list_head parameter to rtnl_link_ops->dellink() methods allow us to queue devices on a list, in order to dismantle them all at once. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-27 07:06:36 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: allow multiple driver backends This makes it possible to hook into the macvlan driver from another kernel module. In particular, the goal is to extend it with the macvtap backend that provides a tun/tap compatible interface directly on the macvlan device. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-30 12:23:40 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: export macvlan mode through netlink In order to support all three modes of macvlan at runtime, extend the existing netlink protocol to allow choosing the mode per macvlan slave interface. This depends on a matching patch to iproute2 in order to become accessible in user land. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-26 06:07:11 +00:00
macvlan: allow multiple driver backends This makes it possible to hook into the macvlan driver from another kernel module. In particular, the goal is to extend it with the macvtap backend that provides a tun/tap compatible interface directly on the macvlan device. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-30 12:23:40 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvtap: Limit packet queue length Mark Wagner reported OOM symptoms when sending UDP traffic over a macvtap link to a kvm receiver. This appears to be caused by the fact that macvtap packet queues are unlimited in length. This means that if the receiver can't keep up with the rate of flow, then we will hit OOM. Of course it gets worse if the OOM killer then decides to kill the receiver. This patch imposes a cap on the packet queue length, in the same way as the tuntap driver, using the device TX queue length. Please note that macvtap currently has no way of giving congestion notification, that means the software device TX queue cannot be used and packets will always be dropped once the macvtap driver queue fills up. This shouldn't be a great problem for the scenario where macvtap is used to feed a kvm receiver, as the traffic is most likely external in origin so congestion notification can't be applied anyway. Of course, if anybody decides to complain about guest-to-guest UDP packet loss down the track, then we may have to revisit this. Incidentally, this patch also fixes a real memory leak when macvtap_get_queue fails. Chris Wright noticed that for this patch to work, we need a non-zero TX queue length. This patch includes his work to change the default macvtap TX queue length to 500. Reported-by: Mark Wagner <mwagner@redhat.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Chris Wright <chrisw@sous-sol.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-21 21:44:31 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
net: use batched device unregister in veth and macvlan veth devices dont use the batched device unregisters yet. Since veth are a pair of devices, it makes sense to use a batch of two unregisters, this roughly divides dismantle time by two. Fix this by changing dellink() callers to always provide a non NULL head. (Idea from Michał Mirosław) This patch also handles macvlan case : We now dismantle all macvlans on top of a lower dev at once. Reported-by: Alex Bligh <alex@alex.org.uk> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Michał Mirosław <mirqus@gmail.com> Cc: Jesse Gross <jesse@nicira.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-08 23:17:57 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: use rx_handler_data pointer to store macvlan_port pointer V2 Register macvlan_port pointer as rx_handler data pointer. As macvlan_port is removed from struct net_device, another netdev priv_flag is added to indicate the device serves as a macvlan port. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-15 03:27:57 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: use rx_handler_data pointer to store macvlan_port pointer V2 Register macvlan_port pointer as rx_handler data pointer. As macvlan_port is removed from struct net_device, another netdev priv_flag is added to indicate the device serves as a macvlan port. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-15 03:27:57 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
netdevice: provide common routine for macvlan and vlan operstate management Provide common routine for the transition of operational state for a leaf device during a root device transition. Signed-off-by: Patrick Mullaney <pmullaney@novell.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 15:59:22 -08:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: fix gso_max_size setting gso_max_size must be set based on the value of the underlying device to support devices not using the full 64k. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-23 14:18:53 -08:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
netns: keep vlan slaves on master netns move previously, if a vlan master device was moved from one network namespace to another, all 802.1q and macvlan slaves were deleted. we can use dev->reg_state to figure out whether dev_change_net_namespace is happening, since that won't set dev->reg_state NETREG_UNREGISTERING. so, this changes 8021q and macvlan to ignore NETDEV_UNREGISTER when reg_state is not NETREG_UNREGISTERING. Signed-off-by: David Lamparter <equinox@diac24.net> Reviewed-by: "Eric W. Biederman" <ebiederm@xmission.com> Acked-by: Daniel Lezcano <daniel.lezcano@free.fr> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-17 03:22:19 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
net: use batched device unregister in veth and macvlan veth devices dont use the batched device unregisters yet. Since veth are a pair of devices, it makes sense to use a batch of two unregisters, this roughly divides dismantle time by two. Fix this by changing dellink() callers to always provide a non NULL head. (Idea from Michał Mirosław) This patch also handles macvlan case : We now dismantle all macvlans on top of a lower dev at once. Reported-by: Alex Bligh <alex@alex.org.uk> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Michał Mirosław <mirqus@gmail.com> Cc: Jesse Gross <jesse@nicira.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-08 23:17:57 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
net: forbid underlaying devices to change its type It's not desired for underlaying devices to change type. At the time, there is for example possible to have bond with changed type from Ethernet to Infiniband as a port of a bridge. This patch fixes this. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-10 10:30:19 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00
macvlan: allow multiple driver backends This makes it possible to hook into the macvlan driver from another kernel module. In particular, the goal is to extend it with the macvtap backend that provides a tun/tap compatible interface directly on the macvlan device. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-01-30 12:23:40 +00:00
[NET]: Add macvlan driver Add macvlan driver, which allows to create virtual ethernet devices based on MAC address. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-14 18:55:06 -07:00