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| author | Colin Cross <ccross@android.com> | 2011-07-12 20:11:00 -0700 |
|---|---|---|
| committer | Colin Cross <ccross@android.com> | 2011-07-12 20:11:00 -0700 |
| commit | 2340c679cabc5477598ee3c9c2044ec8893d42fd (patch) | |
| tree | 2cf2848bea005b9d807710f23dc5519191ca8215 /net/sctp/socket.c | |
| parent | 9a489d92af45a7d7c1bba9e0803f73f95d2fd13c (diff) | |
| parent | 620917de59eeb934b9f8cf35cc2d95c1ac8ed0fc (diff) | |
| download | kernel_samsung_tuna-2340c679cabc5477598ee3c9c2044ec8893d42fd.zip kernel_samsung_tuna-2340c679cabc5477598ee3c9c2044ec8893d42fd.tar.gz kernel_samsung_tuna-2340c679cabc5477598ee3c9c2044ec8893d42fd.tar.bz2 | |
Merge commit 'v3.0-rc7' into linux-omap-3.0
Diffstat (limited to 'net/sctp/socket.c')
| -rw-r--r-- | net/sctp/socket.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 6766913..08c6238 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -2073,10 +2073,33 @@ static int sctp_setsockopt_disable_fragments(struct sock *sk, static int sctp_setsockopt_events(struct sock *sk, char __user *optval, unsigned int optlen) { + struct sctp_association *asoc; + struct sctp_ulpevent *event; + if (optlen > sizeof(struct sctp_event_subscribe)) return -EINVAL; if (copy_from_user(&sctp_sk(sk)->subscribe, optval, optlen)) return -EFAULT; + + /* + * At the time when a user app subscribes to SCTP_SENDER_DRY_EVENT, + * if there is no data to be sent or retransmit, the stack will + * immediately send up this notification. + */ + if (sctp_ulpevent_type_enabled(SCTP_SENDER_DRY_EVENT, + &sctp_sk(sk)->subscribe)) { + asoc = sctp_id2assoc(sk, 0); + + if (asoc && sctp_outq_is_empty(&asoc->outqueue)) { + event = sctp_ulpevent_make_sender_dry_event(asoc, + GFP_ATOMIC); + if (!event) + return -ENOMEM; + + sctp_ulpq_tail_event(&asoc->ulpq, event); + } + } + return 0; } |