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net: introduce and use custom sockopt socket flag

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We will soon introduce custom setsockopt for UDP sockets, too.
Instead of doing even more complex arbitrary checks inside
sock_use_custom_sol_socket(), add a new socket flag and set it
for the relevant socket types (currently only MPTCP).

Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Paolo Abeni 2022-10-20 19:48:51 +02:00 • committed by David S. Miller
parent ea5ed0f00b
commit a5ef058dc4
3 changed files with 6 additions and 7 deletions
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8
net/socket.c
View file

@ -2199,13 +2199,7 @@ SYSCALL_DEFINE4(recv, int, fd, void __user *, ubuf, size_t, size,
static bool sock_use_custom_sol_socket(const struct socket *sock)
{
const struct sock *sk = sock->sk;
/* Use sock->ops->setsockopt() for MPTCP */
return IS_ENABLED(CONFIG_MPTCP) &&
sk->sk_protocol == IPPROTO_MPTCP &&
sk->sk_type == SOCK_STREAM &&
(sk->sk_family == AF_INET || sk->sk_family == AF_INET6);
return test_bit(SOCK_CUSTOM_SOCKOPT, &sock->flags);
}
/*