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authorXin Long <lucien.xin@gmail.com>2016-07-30 14:14:41 +0800
committerDavid S. Miller <davem@davemloft.net>2016-07-30 22:06:22 -0700
commite08786942e0ea3a3cb268e6c62523d40f1c5eeb8 (patch)
treee738a612df3e51d18ca95d387a1d778483c20f44 /net
parenta0fc6843f948345fa85c218fec662f571804d2f9 (diff)
downloadlinux-e08786942e0ea3a3cb268e6c62523d40f1c5eeb8.tar.bz2
sctp: allow receiving msg when TCP-style sk is in CLOSED state
Commit 141ddefce7c8 ("sctp: change sk state to CLOSED instead of CLOSING in sctp_sock_migrate") changed sk state to CLOSED if the assoc is closed when sctp_accept clones a new sk. If there is still data in sk receive queue, users will not be able to read it any more, as sctp_recvmsg returns directly if sk state is CLOSED. This patch is to add CLOSED state check in sctp_recvmsg to allow reading data from TCP-style sk with CLOSED state as what TCP does. Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/sctp/socket.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 8812e1bf6c1c..9fc417a8b476 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -2079,7 +2079,7 @@ static int sctp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
lock_sock(sk);
if (sctp_style(sk, TCP) && !sctp_sstate(sk, ESTABLISHED) &&
- !sctp_sstate(sk, CLOSING)) {
+ !sctp_sstate(sk, CLOSING) && !sctp_sstate(sk, CLOSED)) {
err = -ENOTCONN;
goto out;
}