Now sctp doesn't change socket state upon shutdown reception. It changes
just the assoc state, even though it's a TCP-style socket.
For some cases, if we really need to check sk->sk_state, it's necessary to
fix this issue, at least when we use ss or netstat to dump, we can get a
more exact information.
As an improvement, we will change sk->sk_state when we change asoc->state
to SHUTDOWN_RECEIVED, and also do it in sctp_shutdown to keep consistent with
sctp_close.
Signed-off-by: Xin Long <lucien....@gmail.com>
---
net/sctp/sm_sideeffect.c | 4 +++-
net/sctp/socket.c | 7 +++++--
2 files changed, 8 insertions(+), 3 deletions(-)
diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index aa37122..12d4519 100644
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -806,8 +806,10 @@ static void sctp_cmd_new_state(sctp_cmd_seq_t *cmds,
/* Set the RCV_SHUTDOWN flag when a SHUTDOWN is received. */
if (sctp_state(asoc, SHUTDOWN_RECEIVED) &&
- sctp_sstate(sk, ESTABLISHED))
+ sctp_sstate(sk, ESTABLISHED)) {
+ sk->sk_state = SCTP_SS_CLOSING;
sk->sk_shutdown |= RCV_SHUTDOWN;
+ }
}
if (sctp_state(asoc, COOKIE_WAIT)) {
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 67154b8..80d860a 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -4193,6 +4193,7 @@ static void sctp_shutdown(struct sock *sk, int how)
return;
if (how & SEND_SHUTDOWN) {
+ sk->sk_state = SCTP_SS_CLOSING;
ep = sctp_sk(sk)->ep;
if (!list_empty(&ep->asocs)) {
asoc = list_entry(ep->asocs.next,
@@ -7564,10 +7565,12 @@ static void sctp_sock_migrate(struct sock *oldsk,
struct sock *newsk,
/* If the association on the newsk is already closed before accept()
* is called, set RCV_SHUTDOWN flag.
*/
- if (sctp_state(assoc, CLOSED) && sctp_style(newsk, TCP))
+ if (sctp_state(assoc, CLOSED) && sctp_style(newsk, TCP)) {
+ newsk->sk_state = SCTP_SS_CLOSING;
newsk->sk_shutdown |= RCV_SHUTDOWN;
+ } else
+ newsk->sk_state = SCTP_SS_ESTABLISHED;
- newsk->sk_state = SCTP_SS_ESTABLISHED;
release_sock(newsk);
}
--
2.1.0
