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linux/net/hsr
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Xiaoliang Yang dccbe4fab7 net: hsr: create an API to get hsr port type 
[ Upstream commit a0244e7621 ]

Since the introduction of HSR_PT_INTERLINK in commit 5055cccfc2 ("net:
hsr: Provide RedBox support (HSR-SAN)"), we see that different port
types require different settings for hardware offload, which was not the
case before when we only had HSR_PT_SLAVE_A and HSR_PT_SLAVE_B. But
there is currently no way to know which port is which type, so create
the hsr_get_port_type() API function and export it.

When hsr_get_port_type() is called from the device driver, the port can
must be found in the HSR port list. An important use case is for this
function to work from offloading drivers' NETDEV_CHANGEUPPER handler,
which is triggered by hsr_portdev_setup() -> netdev_master_upper_dev_link().
Therefore, we need to move the addition of the hsr_port to the HSR port
list prior to calling hsr_portdev_setup(). This makes the error
restoration path also more similar to hsr_del_port(), where
kfree_rcu(port) is already used.

Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Lukasz Majewski <lukma@denx.de>
Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Łukasz Majewski <lukma@nabladev.com>
Link: https://patch.msgid.link/20251130131657.65080-3-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 30296ac764 ("net: dsa: xrs700x: reject unsupported HSR configurations")
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-12-18 13:55:14 +01:00
..
hsr_debugfs.c Revert "net: hsr: use hlist_head instead of list_head for mac addresses" 2022-12-01 20:26:20 -08:00
hsr_device.c net: hsr: create an API to get hsr port type 2025-12-18 13:55:14 +01:00
hsr_device.h net: hsr: Provide RedBox support (HSR-SAN) 2024-04-26 12:04:43 +02:00
hsr_forward.c net: hsr: Fix PRP duplicate detection 2025-05-29 11:02:20 +02:00
hsr_forward.h net: hsr: fix mac_len checks 2021-05-24 14:10:28 -07:00
hsr_framereg.c net: hsr: Fix PRP duplicate detection 2025-05-29 11:02:20 +02:00
hsr_framereg.h net: hsr: Fix PRP duplicate detection 2025-05-29 11:02:20 +02:00
hsr_main.c hsr: use hsr_for_each_port_rtnl in hsr_port_get_hsr 2025-09-19 16:35:50 +02:00
hsr_main.h net: hsr: Create and export hsr_get_port_ndev() 2025-12-18 13:55:14 +01:00
hsr_netlink.c net: hsr: remove seqnr_lock 2024-09-09 10:25:01 +01:00
hsr_netlink.h net/hsr: Remove unused function declarations 2023-07-31 20:11:47 -07:00
hsr_slave.c net: hsr: create an API to get hsr port type 2025-12-18 13:55:14 +01:00
hsr_slave.h net: prp: add packet handling support 2020-07-27 12:20:40 -07:00
Kconfig hsr: enhance netlink socket interface to support PRP 2020-07-27 12:20:40 -07:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00