diff options
| author |   Martin KaFai Lau <kafai@fb.com> | 2016-04-11 15:29:37 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-04-14 16:29:53 -0400 |
| commit | e646b657f6983017783914a951039e323120dc55 (patch) | |
| tree | 4e761d6859d0784b6e24fb1f30cc85467053eba2 /include | |
| parent | ipv6: datagram: Update dst cache of a connected datagram sk during pmtu update (diff) | |
| download | linux-dev-e646b657f6983017783914a951039e323120dc55.tar.xz linux-dev-e646b657f6983017783914a951039e323120dc55.zip | |
ipv6: udp: Do a route lookup and update during release_cb
This patch adds a release_cb for UDPv6. It does a route lookup
and updates sk->sk_dst_cache if it is needed. It picks up the
left-over job from ip6_sk_update_pmtu() if the sk was owned
by user during the pmtu update.
It takes a rcu_read_lock to protect the __sk_dst_get() operations
because another thread may do ip6_dst_store() without taking the
sk lock (e.g. sendmsg).
Fixes: 45e4fd26683c ("ipv6: Only create RTF_CACHE routes after encountering pmtu exception")
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Reported-by: Wei Wang <weiwan@google.com>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Wei Wang <weiwan@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/ipv6.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h index fd02e90b1289..1be050ada8c5 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -960,6 +960,7 @@ int ip6_datagram_connect(struct sock *sk, struct sockaddr *addr, int addr_len); int ip6_datagram_connect_v6_only(struct sock *sk, struct sockaddr *addr, int addr_len); int ip6_datagram_dst_update(struct sock *sk, bool fix_sk_saddr); +void ip6_datagram_release_cb(struct sock *sk); int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len); |