mpls: no longer hold RTNL in mpls_netconf_dump_devconf()

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[ Upstream commit e0f89d2864 ]

- Use for_each_netdev_dump() to no longer rely
  on net->dev_index_head hash table.

- No longer care of net->dev_base_seq

- Fix return value at the end of a dump,
  so that NLMSG_DONE can be appended to current skb,
  saving one recvmsg() system call.

- No longer grab RTNL, RCU protection is enough,
  afer adding one READ_ONCE(mdev->input_enabled)
  in mpls_netconf_fill_devconf()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20240410111951.2673193-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 5be2062e30 ("mpls: Handle error of rtnl_register_module().")
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Eric Dumazet 2024-04-10 11:19:50 +00:00 • committed by Greg Kroah-Hartman

parent ba5366b87c

commit ff7abccdd5

1 changed files with 22 additions and 37 deletions

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net/mpls/af_mpls.c

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