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ipv4: remove fib_info_devhash[]

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Upcoming per-netns RTNL conversion needs to get rid
of shared hash tables.

fib_info_devhash[] is one of them.

It is unclear why we used a hash table, because
a single hlist_head per net device was cheaper and scalable.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20241004134720.579244-5-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Eric Dumazet
2024-10-04 13:47:20 +00:00
committed by Jakub Kicinski
parent 143ca845ec
commit a3f5f4c2f9
3 changed files with 19 additions and 20 deletions
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3
include/linux/netdevice.h
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@@ -2211,6 +2211,9 @@ struct net_device {
/* Protocol-specific pointers */
struct in_device __rcu *ip_ptr;
/** @fib_nh_head: nexthops associated with this netdev */
struct hlist_head fib_nh_head;
#if IS_ENABLED(CONFIG_VLAN_8021Q)
struct vlan_info __rcu *vlan_info;
#endif