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| author | Breno Leitao <leitao@debian.org> | 2025-02-18 05:49:30 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-03-13 12:50:53 +0100 |
| commit | e860d51035912e1af6344a687cac401583f8bffc (patch) | |
| tree | 16cc15b6c4018dd1302375bae6d1547bdc1fee2e /include | |
| parent | 2af45b1f29626a5469da667d5da20b894d1cfd71 (diff) | |
| download | linux-e860d51035912e1af6344a687cac401583f8bffc.tar.gz linux-e860d51035912e1af6344a687cac401583f8bffc.tar.bz2 linux-e860d51035912e1af6344a687cac401583f8bffc.zip | |
net: Add non-RCU dev_getbyhwaddr() helper
[ Upstream commit 4b5a28b38c4a0106c64416a1b2042405166b26ce ]
Add dedicated helper for finding devices by hardware address when
holding rtnl_lock, similar to existing dev_getbyhwaddr_rcu(). This prevents
PROVE_LOCKING warnings when rtnl_lock is held but RCU read lock is not.
Extract common address comparison logic into dev_addr_cmp().
The context about this change could be found in the following
discussion:
Link: https://lore.kernel.org/all/20250206-scarlet-ermine-of-improvement-1fcac5@leitao/
Cc: kuniyu@amazon.com
Cc: ushankar@purestorage.com
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://patch.msgid.link/20250218-arm_fix_selftest-v5-1-d3d6892db9e1@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 4eae0ee0f1e6 ("arp: switch to dev_getbyhwaddr() in arp_req_set_public()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/netdevice.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 79b528c128c1..179c569a55c4 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2966,6 +2966,8 @@ static inline struct net_device *first_net_device_rcu(struct net *net) } int netdev_boot_setup_check(struct net_device *dev); +struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, + const char *hwaddr); struct net_device *dev_getbyhwaddr_rcu(struct net *net, unsigned short type, const char *hwaddr); struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type); |