diff options
author | David S. Miller <davem@davemloft.net> | 2012-07-16 14:44:56 +0400 |
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committer | David S. Miller <davem@davemloft.net> | 2012-07-16 14:44:56 +0400 |
commit | 35ad9b9cf7d8a2e6259a0d24022e910adb6f3489 (patch) | |
tree | d9772467e072f3f1d142aa0ce2fc56ef69c57cb7 /net/ipv6/inet6_connection_sock.c | |
parent | 80d0a69fc57715dc9080c0567df1ed911b78abea (diff) | |
download | linux-35ad9b9cf7d8a2e6259a0d24022e910adb6f3489.tar.xz |
ipv6: Add helper inet6_csk_update_pmtu().
This is the ipv6 version of inet_csk_update_pmtu().
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/inet6_connection_sock.c')
-rw-r--r-- | net/ipv6/inet6_connection_sock.c | 49 |
1 files changed, 35 insertions, 14 deletions
diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c index bceb14450a1d..62539a4b2dc7 100644 --- a/net/ipv6/inet6_connection_sock.c +++ b/net/ipv6/inet6_connection_sock.c @@ -203,15 +203,13 @@ struct dst_entry *__inet6_csk_dst_check(struct sock *sk, u32 cookie) return dst; } -int inet6_csk_xmit(struct sk_buff *skb, struct flowi *fl_unused) +static struct dst_entry *inet6_csk_route_socket(struct sock *sk) { - struct sock *sk = skb->sk; struct inet_sock *inet = inet_sk(sk); struct ipv6_pinfo *np = inet6_sk(sk); - struct flowi6 fl6; - struct dst_entry *dst; struct in6_addr *final_p, final; - int res; + struct dst_entry *dst; + struct flowi6 fl6; memset(&fl6, 0, sizeof(fl6)); fl6.flowi6_proto = sk->sk_protocol; @@ -228,18 +226,29 @@ int inet6_csk_xmit(struct sk_buff *skb, struct flowi *fl_unused) final_p = fl6_update_dst(&fl6, np->opt, &final); dst = __inet6_csk_dst_check(sk, np->dst_cookie); - - if (dst == NULL) { + if (!dst) { dst = ip6_dst_lookup_flow(sk, &fl6, final_p, false); - if (IS_ERR(dst)) { - sk->sk_err_soft = -PTR_ERR(dst); - sk->sk_route_caps = 0; - kfree_skb(skb); - return PTR_ERR(dst); - } + if (!IS_ERR(dst)) + __inet6_csk_dst_store(sk, dst, NULL, NULL); + } + return dst; +} - __inet6_csk_dst_store(sk, dst, NULL, NULL); +int inet6_csk_xmit(struct sk_buff *skb, struct flowi *fl_unused) +{ + struct sock *sk = skb->sk; + struct ipv6_pinfo *np = inet6_sk(sk); + struct flowi6 fl6; + struct dst_entry *dst; + int res; + + dst = inet6_csk_route_socket(sk); + if (IS_ERR(dst)) { + sk->sk_err_soft = -PTR_ERR(dst); + sk->sk_route_caps = 0; + kfree_skb(skb); + return PTR_ERR(dst); } rcu_read_lock(); @@ -253,3 +262,15 @@ int inet6_csk_xmit(struct sk_buff *skb, struct flowi *fl_unused) return res; } EXPORT_SYMBOL_GPL(inet6_csk_xmit); + +struct dst_entry *inet6_csk_update_pmtu(struct sock *sk, u32 mtu) +{ + struct dst_entry *dst = inet6_csk_route_socket(sk); + + if (IS_ERR(dst)) + return NULL; + dst->ops->update_pmtu(dst, mtu); + + return inet6_csk_route_socket(sk); +} +EXPORT_SYMBOL_GPL(inet6_csk_update_pmtu); |