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udp: get rid of sk_prot_clear_portaddr_nulls()

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Since we no longer use SLAB_DESTROY_BY_RCU for UDP,
we do not need sk_prot_clear_portaddr_nulls() helper.

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 11:39:27 -07:00 committed by David S. Miller
parent 6a6ad2a4e5
commit 4cac820466
5 changed files with 0 additions and 23 deletions
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2
include/net/sock.h
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@ -1242,8 +1242,6 @@ static inline int __sk_prot_rehash(struct sock *sk)
return sk->sk_prot->hash(sk);
}
void sk_prot_clear_portaddr_nulls(struct sock *sk, int size);
/* About 10 seconds */
#define SOCK_DESTROY_TIME (10*HZ)

18
net/core/sock.c
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@ -1315,24 +1315,6 @@ static void sock_copy(struct sock *nsk, const struct sock *osk)
#endif
}
void sk_prot_clear_portaddr_nulls(struct sock *sk, int size)
{
unsigned long nulls1, nulls2;
nulls1 = offsetof(struct sock, __sk_common.skc_node.next);
nulls2 = offsetof(struct sock, __sk_common.skc_portaddr_node.next);
if (nulls1 > nulls2)
swap(nulls1, nulls2);
if (nulls1 != 0)
memset((char *)sk, 0, nulls1);
memset((char *)sk + nulls1 + sizeof(void *), 0,
nulls2 - nulls1 - sizeof(void *));
memset((char *)sk + nulls2 + sizeof(void *), 0,
size - nulls2 - sizeof(void *));
}
EXPORT_SYMBOL(sk_prot_clear_portaddr_nulls);
static struct sock *sk_prot_alloc(struct proto *prot, gfp_t priority,
int family)
{

1
net/ipv4/udp.c
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@ -2237,7 +2237,6 @@ struct proto udp_prot = {
.compat_setsockopt = compat_udp_setsockopt,
.compat_getsockopt = compat_udp_getsockopt,
#endif
.clear_sk = sk_prot_clear_portaddr_nulls,
.diag_destroy = udp_abort,
};
EXPORT_SYMBOL(udp_prot);

1
net/ipv4/udplite.c
View File

@ -61,7 +61,6 @@ struct proto udplite_prot = {
.compat_setsockopt = compat_udp_setsockopt,
.compat_getsockopt = compat_udp_getsockopt,
#endif
.clear_sk = sk_prot_clear_portaddr_nulls,
};
EXPORT_SYMBOL(udplite_prot);

1
net/ipv6/udplite.c
View File

@ -56,7 +56,6 @@ struct proto udplitev6_prot = {
.compat_setsockopt = compat_udpv6_setsockopt,
.compat_getsockopt = compat_udpv6_getsockopt,
#endif
.clear_sk = sk_prot_clear_portaddr_nulls,
};
static struct inet_protosw udplite6_protosw = {