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ipv6: tcp: get rid of tcp_v6_clear_sk()

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Now RCU lookups of IPv6 TCP sockets no longer dereference pinet6,
we do not need tcp_v6_clear_sk() anymore.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2016-08-23 11:39:28 -07:00 committed by David S. Miller
parent 4cac820466
commit 391bb6be65
1 changed files with 0 additions and 12 deletions
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12
net/ipv6/tcp_ipv6.c
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@ -1862,17 +1862,6 @@ void tcp6_proc_exit(struct net *net)
} }
#endif #endif
static void tcp_v6_clear_sk(struct sock *sk, int size)
{
struct inet_sock *inet = inet_sk(sk);
/* we do not want to clear pinet6 field, because of RCU lookups */
sk_prot_clear_nulls(sk, offsetof(struct inet_sock, pinet6));
size -= offsetof(struct inet_sock, pinet6) + sizeof(inet->pinet6);
memset(&inet->pinet6 + 1, 0, size);
}
struct proto tcpv6_prot = { struct proto tcpv6_prot = {
.name = "TCPv6", .name = "TCPv6",
.owner = THIS_MODULE, .owner = THIS_MODULE,
@ -1914,7 +1903,6 @@ struct proto tcpv6_prot = {
.compat_setsockopt = compat_tcp_setsockopt, .compat_setsockopt = compat_tcp_setsockopt,
.compat_getsockopt = compat_tcp_getsockopt, .compat_getsockopt = compat_tcp_getsockopt,
#endif #endif
.clear_sk = tcp_v6_clear_sk,
.diag_destroy = tcp_abort, .diag_destroy = tcp_abort,
}; };