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net: introduce keepalive function in struct proto

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Direct call of tcp_set_keepalive() function from protocol-agnostic
sock_setsockopt() function in net/core/sock.c violates network
layering. And newly introduced protocol (SMC-R) will need its own
keepalive function. Therefore, add "keepalive" function pointer
to "struct proto", and call it from sock_setsockopt() via this pointer.

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Utz Bacher <utz.bacher@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ursula Braun
2017-01-09 16:55:12 +01:00
committed by David S. Miller
parent c8584b3fdf
commit 4b9d07a440
5 changed files with 6 additions and 5 deletions
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1
net/ipv4/tcp_timer.c
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@@ -617,6 +617,7 @@ void tcp_set_keepalive(struct sock *sk, int val)
else if (!val)
inet_csk_delete_keepalive_timer(sk);
}
EXPORT_SYMBOL_GPL(tcp_set_keepalive);
static void tcp_keepalive_timer (unsigned long data)