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net: add helpers checking if socket can be bound to nonlocal address

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The construction "net->ipv4.sysctl_ip_nonlocal_bind || inet->freebind
|| inet->transparent" is present three times and its IPv6 counterpart
is also present three times. We introduce two small helpers to
characterize these tests uniformly.

Signed-off-by: Vincent Bernat <vincent@bernat.im>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vincent Bernat
2018-07-31 21:18:11 +02:00
committed by David S. Miller
parent d39db3b4d6
commit 83ba464515
6 changed files with 21 additions and 12 deletions
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8
include/net/inet_sock.h
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@@ -359,4 +359,12 @@ static inline bool inet_get_convert_csum(struct sock *sk)
return !!inet_sk(sk)->convert_csum;
}
static inline bool inet_can_nonlocal_bind(struct net *net,
struct inet_sock *inet)
{
return net->ipv4.sysctl_ip_nonlocal_bind ||
inet->freebind || inet->transparent;
}
#endif /* _INET_SOCK_H */