ipv4: Don't allocate ifa for 0.0.0.0 in inet_rtm_newaddr().

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When we pass 0.0.0.0 to __inet_insert_ifa(), it frees ifa and returns 0.

We can do this check much earlier for RTM_NEWADDR even before allocating
struct in_ifaddr.

Let's move the validation to

  1. inet_insert_ifa() for ioctl()
  2. inet_rtm_newaddr() for RTM_NEWADDR

Now, we can remove the same check in find_matching_ifa().

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

...

This commit is contained in:

Kuniyuki Iwashima 2024-10-21 11:32:31 -07:00 • committed by Paolo Abeni

parent 2d34429d14

commit abd0deff03

1 changed files with 9 additions and 8 deletions

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net/ipv4/devinet.c

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