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linux/net/netfilter/nfnetlink.c

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[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: nfnetlink: remove early debugging messages from nfnetlink Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-14 16:40:38 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: nfnetlink: use mutex instead of semaphore Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-14 16:39:25 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETLINK]: Add properly module refcounting for kernel netlink sockets. - Remove bogus code for compiling netlink as module - Add module refcounting support for modules implementing a netlink protocol - Add support for autoloading modules that implement a netlink protocol as soon as someone opens a socket for that protocol Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:40:55 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: nfnetlink: make subsystem and callbacks const Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-09-28 14:15:45 -07:00
[NETFILTER]: nfnetlink: use mutex instead of semaphore Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-14 16:39:25 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NET]: Make netlink processing routines semi-synchronious (inspired by rtnl) v2 The code in netfilter/nfnetlink.c and in ./net/netlink/genetlink.c looks like outdated copy/paste from rtnetlink.c. Push them into sync with the original. Changes from v1: - deleted comment in nfnetlink_rcv_msg by request of Patrick McHardy Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:13:32 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: nfnetlink: use mutex instead of semaphore Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-14 16:39:25 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NET]: Make netlink processing routines semi-synchronious (inspired by rtnl) v2 The code in netfilter/nfnetlink.c and in ./net/netlink/genetlink.c looks like outdated copy/paste from rtnetlink.c. Push them into sync with the original. Changes from v1: - deleted comment in nfnetlink_rcv_msg by request of Patrick McHardy Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:13:32 -07:00
[NETFILTER]: nfnetlink: use mutex instead of semaphore Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-14 16:39:25 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: nfnetlink: make subsystem and callbacks const Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-09-28 14:15:45 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: Core changes required by upcoming nfnetlink_queue code - split netfiler verdict in 16bit verdict and 16bit queue number - add 'queuenum' argument to nf_queue_outfn_t and its users ip[6]_queue - move NFNL_SUBSYS_ definitions from enum to #define - introduce autoloading for nfnetlink subsystem modules - add MODULE_ALIAS_NFNL_SUBSYS macro - add nf_unregister_queue_handlers() to register all handlers for a given nf_queue_outfn_t - add more verbose DEBUGP macro definition to nfnetlink.c - make nfnetlink_subsys_register fail if subsys already exists - add some more comments and debug statements to nfnetlink.c Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:43:44 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: nfnetlink: move EXPORT_SYMBOL declarations next to the exported symbol Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-14 16:42:11 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: nfnetlink: make subsystem and callbacks const Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-09-28 14:15:45 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: nfnetlink: move EXPORT_SYMBOL declarations next to the exported symbol Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-14 16:42:11 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: nfnetlink: make subsystem and callbacks const Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-09-28 14:15:45 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: nfnetlink: remove unrequired check in nfnetlink_get_subsys subsys_table is initialized to NULL, therefore just returns NULL in case that it is not set. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-14 16:41:28 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: nfnetlink: make subsystem and callbacks const Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-09-28 14:15:45 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: Fix whitespace errors Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-12 11:15:49 -08:00
[NETFILTER]: nfnetlink: remove early debugging messages from nfnetlink Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-14 16:40:38 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: ctnetlink: avoid unneccessary event message generation Avoid unneccessary event message generation by checking for netlink listeners before building a message. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 18:03:59 -08:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: nfnetlink: use nlmsg_notify() Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-09-28 14:38:07 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: nfnetlink: move EXPORT_SYMBOL declarations next to the exported symbol Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-14 16:42:11 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: nfnetlink: move EXPORT_SYMBOL declarations next to the exported symbol Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-14 16:42:11 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETLINK]: Remove error pointer from netlink message handler The error pointer argument in netlink message handlers is used to signal the special case where processing has to be interrupted because a dump was started but no error happened. Instead it is simpler and more clear to return -EINTR and have netlink_run_queue() deal with getting the queue right. nfnetlink passed on this error pointer to its subsystem handlers but only uses it to signal the start of a netlink dump. Therefore it can be removed there as well. This patch also cleans up the error handling in the affected message handlers to be consistent since it had to be touched anyway. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-22 23:30:12 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: nfnetlink: make subsystem and callbacks const Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-09-28 14:15:45 -07:00
[NETLINK]: Remove error pointer from netlink message handler The error pointer argument in netlink message handlers is used to signal the special case where processing has to be interrupted because a dump was started but no error happened. Instead it is simpler and more clear to return -EINTR and have netlink_run_queue() deal with getting the queue right. nfnetlink passed on this error pointer to its subsystem handlers but only uses it to signal the start of a netlink dump. Therefore it can be removed there as well. This patch also cleans up the error handling in the affected message handlers to be consistent since it had to be touched anyway. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-22 23:30:12 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETLINK]: Remove error pointer from netlink message handler The error pointer argument in netlink message handlers is used to signal the special case where processing has to be interrupted because a dump was started but no error happened. Instead it is simpler and more clear to return -EINTR and have netlink_run_queue() deal with getting the queue right. nfnetlink passed on this error pointer to its subsystem handlers but only uses it to signal the start of a netlink dump. Therefore it can be removed there as well. This patch also cleans up the error handling in the affected message handlers to be consistent since it had to be touched anyway. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-22 23:30:12 -07:00
[NETFILTER] nfnetlink: unconditionally require CAP_NET_ADMIN This patch unconditionally requires CAP_NET_ADMIN for all nfnetlink messages. It also removes the per-message cap_required field, since all existing subsystems use CAP_NET_ADMIN for all their messages anyway. Patrick McHardy owes me a beer if we ever need to re-introduce this. Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-11-14 15:24:59 -08:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: nfnetlink: remove early debugging messages from nfnetlink Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-14 16:40:38 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: Core changes required by upcoming nfnetlink_queue code - split netfiler verdict in 16bit verdict and 16bit queue number - add 'queuenum' argument to nf_queue_outfn_t and its users ip[6]_queue - move NFNL_SUBSYS_ definitions from enum to #define - introduce autoloading for nfnetlink subsystem modules - add MODULE_ALIAS_NFNL_SUBSYS macro - add nf_unregister_queue_handlers() to register all handlers for a given nf_queue_outfn_t - add more verbose DEBUGP macro definition to nfnetlink.c - make nfnetlink_subsys_register fail if subsys already exists - add some more comments and debug statements to nfnetlink.c Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:43:44 -07:00
[NET]: Make netlink processing routines semi-synchronious (inspired by rtnl) v2 The code in netfilter/nfnetlink.c and in ./net/netlink/genetlink.c looks like outdated copy/paste from rtnetlink.c. Push them into sync with the original. Changes from v1: - deleted comment in nfnetlink_rcv_msg by request of Patrick McHardy Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:13:32 -07:00
[NETFILTER] nfnetlink: unconditionally require CAP_NET_ADMIN This patch unconditionally requires CAP_NET_ADMIN for all nfnetlink messages. It also removes the per-message cap_required field, since all existing subsystems use CAP_NET_ADMIN for all their messages anyway. Patrick McHardy owes me a beer if we ever need to re-introduce this. Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-11-14 15:24:59 -08:00
[NETFILTER]: nfnetlink: use mutex instead of semaphore Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-14 16:39:25 -07:00
[NETFILTER] nfnetlink: unconditionally require CAP_NET_ADMIN This patch unconditionally requires CAP_NET_ADMIN for all nfnetlink messages. It also removes the per-message cap_required field, since all existing subsystems use CAP_NET_ADMIN for all their messages anyway. Patrick McHardy owes me a beer if we ever need to re-introduce this. Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-11-14 15:24:59 -08:00
[NETFILTER]: Core changes required by upcoming nfnetlink_queue code - split netfiler verdict in 16bit verdict and 16bit queue number - add 'queuenum' argument to nf_queue_outfn_t and its users ip[6]_queue - move NFNL_SUBSYS_ definitions from enum to #define - introduce autoloading for nfnetlink subsystem modules - add MODULE_ALIAS_NFNL_SUBSYS macro - add nf_unregister_queue_handlers() to register all handlers for a given nf_queue_outfn_t - add more verbose DEBUGP macro definition to nfnetlink.c - make nfnetlink_subsys_register fail if subsys already exists - add some more comments and debug statements to nfnetlink.c Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:43:44 -07:00
[NETLINK]: Remove error pointer from netlink message handler The error pointer argument in netlink message handlers is used to signal the special case where processing has to be interrupted because a dump was started but no error happened. Instead it is simpler and more clear to return -EINTR and have netlink_run_queue() deal with getting the queue right. nfnetlink passed on this error pointer to its subsystem handlers but only uses it to signal the start of a netlink dump. Therefore it can be removed there as well. This patch also cleans up the error handling in the affected message handlers to be consistent since it had to be touched anyway. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-22 23:30:12 -07:00
[NETFILTER]: Core changes required by upcoming nfnetlink_queue code - split netfiler verdict in 16bit verdict and 16bit queue number - add 'queuenum' argument to nf_queue_outfn_t and its users ip[6]_queue - move NFNL_SUBSYS_ definitions from enum to #define - introduce autoloading for nfnetlink subsystem modules - add MODULE_ALIAS_NFNL_SUBSYS macro - add nf_unregister_queue_handlers() to register all handlers for a given nf_queue_outfn_t - add more verbose DEBUGP macro definition to nfnetlink.c - make nfnetlink_subsys_register fail if subsys already exists - add some more comments and debug statements to nfnetlink.c Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:43:44 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: nfnetlink: remove early debugging messages from nfnetlink Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-14 16:40:38 -07:00
[NETLINK]: Remove error pointer from netlink message handler The error pointer argument in netlink message handlers is used to signal the special case where processing has to be interrupted because a dump was started but no error happened. Instead it is simpler and more clear to return -EINTR and have netlink_run_queue() deal with getting the queue right. nfnetlink passed on this error pointer to its subsystem handlers but only uses it to signal the start of a netlink dump. Therefore it can be removed there as well. This patch also cleans up the error handling in the affected message handlers to be consistent since it had to be touched anyway. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-22 23:30:12 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: nfnetlink: support attribute policies Add support for automatic checking of per-callback attribute policies. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-09-28 14:38:52 -07:00
[NETFILTER]: nfnetlink: convert to generic netlink attribute functions Get rid of the duplicated rtnetlink macros and use the generic netlink attribute functions. The old duplicated stuff is moved to a new header file that exists just for userspace. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-09-28 14:37:03 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: nfnetlink: support attribute policies Add support for automatic checking of per-callback attribute policies. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-09-28 14:38:52 -07:00
[NETFILTER]: Fix whitespace errors Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-12 11:15:49 -08:00
[NETLINK]: Remove error pointer from netlink message handler The error pointer argument in netlink message handlers is used to signal the special case where processing has to be interrupted because a dump was started but no error happened. Instead it is simpler and more clear to return -EINTR and have netlink_run_queue() deal with getting the queue right. nfnetlink passed on this error pointer to its subsystem handlers but only uses it to signal the start of a netlink dump. Therefore it can be removed there as well. This patch also cleans up the error handling in the affected message handlers to be consistent since it had to be touched anyway. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-22 23:30:12 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NET]: make netlink user -> kernel interface synchronious This patch make processing netlink user -> kernel messages synchronious. This change was inspired by the talk with Alexey Kuznetsov about current netlink messages processing. He says that he was badly wrong when introduced asynchronious user -> kernel communication. The call netlink_unicast is the only path to send message to the kernel netlink socket. But, unfortunately, it is also used to send data to the user. Before this change the user message has been attached to the socket queue and sk->sk_data_ready was called. The process has been blocked until all pending messages were processed. The bad thing is that this processing may occur in the arbitrary process context. This patch changes nlk->data_ready callback to get 1 skb and force packet processing right in the netlink_unicast. Kernel -> user path in netlink_unicast remains untouched. EINTR processing for in netlink_run_queue was changed. It forces rtnl_lock drop, but the process remains in the cycle until the message will be fully processed. So, there is no need to use this kludges now. Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:15:29 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NET]: make netlink user -> kernel interface synchronious This patch make processing netlink user -> kernel messages synchronious. This change was inspired by the talk with Alexey Kuznetsov about current netlink messages processing. He says that he was badly wrong when introduced asynchronious user -> kernel communication. The call netlink_unicast is the only path to send message to the kernel netlink socket. But, unfortunately, it is also used to send data to the user. Before this change the user message has been attached to the socket queue and sk->sk_data_ready was called. The process has been blocked until all pending messages were processed. The bad thing is that this processing may occur in the arbitrary process context. This patch changes nlk->data_ready callback to get 1 skb and force packet processing right in the netlink_unicast. Kernel -> user path in netlink_unicast remains untouched. EINTR processing for in netlink_run_queue was changed. It forces rtnl_lock drop, but the process remains in the cycle until the message will be fully processed. So, there is no need to use this kludges now. Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:15:29 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: net/netfilter/nfnetlink*: make functions static This patch makes needlessly global functions static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-09-05 18:06:45 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NETFILTER]: net/netfilter/nfnetlink*: make functions static This patch makes needlessly global functions static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-09-05 18:06:45 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00
[NET]: Support multiple network namespaces with netlink Each netlink socket will live in exactly one network namespace, this includes the controlling kernel sockets. This patch updates all of the existing netlink protocols to only support the initial network namespace. Request by clients in other namespaces will get -ECONREFUSED. As they would if the kernel did not have the support for that netlink protocol compiled in. As each netlink protocol is updated to be multiple network namespace safe it can register multiple kernel sockets to acquire a presence in the rest of the network namespaces. The implementation in af_netlink is a simple filter implementation at hash table insertion and hash table look up time. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-09-12 13:05:38 +02:00
[NETLINK]: Switch cb_lock spinlock to mutex and allow to override it Switch cb_lock to mutex and allow netlink kernel users to override it with a subsystem specific mutex for consistent locking in dump callbacks. All netlink_dump_start users have been audited not to rely on any side-effects of the previously used spinlock. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-20 14:14:21 -07:00
[NETFITLER]: Add nfnetlink layer. Introduce "nfnetlink" (netfilter netlink) layer. This layer is used as transport layer for all userspace communication of the new upcoming netfilter subsystems, such as ctnetlink, nfnetlink_queue and some day even the mythical pkttables ;) Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-09 19:30:24 -07:00