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| author | David S. Miller <davem@davemloft.net> | 2017-02-20 10:26:10 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-02-20 10:26:10 -0500 |
| commit | d4105267a1409b739907c09b895ac0e39980b367 (patch) | |
| tree | ef5b3d50db0a6e1839f48be2b8484d11ab2ba9a2 | |
| parent | 93a66e93c7d8775f33c0d65e3fdeb209c1d4a8c9 (diff) | |
| parent | 4ea0c32f5f42f7ef33a7ecfb9b61ff0cad9b3c08 (diff) | |
| download | blackbird-op-linux-d4105267a1409b739907c09b895ac0e39980b367.tar.gz blackbird-op-linux-d4105267a1409b739907c09b895ac0e39980b367.zip | |
Merge branch 'sctp-MSG_MORE'
Xin Long says:
====================
sctp: support MSG_MORE flag when sending msg
This patch is to add support for MSG_MORE on sctp. Patch 1/2 is an
improvement ahead of patch 2/2 to solve the close block problem
mentioned in https://patchwork.ozlabs.org/patch/372404/.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/sctp/structs.h | 1 | ||||
| -rw-r--r-- | net/sctp/output.c | 9 | ||||
| -rw-r--r-- | net/sctp/sm_sideeffect.c | 4 | ||||
| -rw-r--r-- | net/sctp/socket.c | 1 |
4 files changed, 9 insertions, 6 deletions
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h index 387c802bf248..a244db5e5ff7 100644 --- a/include/net/sctp/structs.h +++ b/include/net/sctp/structs.h @@ -497,6 +497,7 @@ struct sctp_datamsg { /* Did the messenge fail to send? */ int send_error; u8 send_failed:1, + force_delay:1, can_delay; /* should this message be Nagle delayed */ }; diff --git a/net/sctp/output.c b/net/sctp/output.c index 814eac047467..85406d5f8f41 100644 --- a/net/sctp/output.c +++ b/net/sctp/output.c @@ -704,18 +704,15 @@ static sctp_xmit_t sctp_packet_can_append_data(struct sctp_packet *packet, * unacknowledged. */ - if (sctp_sk(asoc->base.sk)->nodelay) - /* Nagle disabled */ + if ((sctp_sk(asoc->base.sk)->nodelay || inflight == 0) && + !chunk->msg->force_delay) + /* Nothing unacked */ return SCTP_XMIT_OK; if (!sctp_packet_empty(packet)) /* Append to packet */ return SCTP_XMIT_OK; - if (inflight == 0) - /* Nothing unacked */ - return SCTP_XMIT_OK; - if (!sctp_state(asoc, ESTABLISHED)) return SCTP_XMIT_OK; diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c index 51abcc90fe75..25384fa82ba9 100644 --- a/net/sctp/sm_sideeffect.c +++ b/net/sctp/sm_sideeffect.c @@ -872,6 +872,10 @@ static void sctp_cmd_new_state(sctp_cmd_seq_t *cmds, if (!sctp_style(sk, UDP)) sk->sk_state_change(sk); } + + if (sctp_state(asoc, SHUTDOWN_PENDING) && + !sctp_outq_is_empty(&asoc->outqueue)) + sctp_outq_uncork(&asoc->outqueue, GFP_ATOMIC); } /* Helper function to delete an association. */ diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 75f35cea4371..b5321486fbed 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -1964,6 +1964,7 @@ static int sctp_sendmsg(struct sock *sk, struct msghdr *msg, size_t msg_len) err = PTR_ERR(datamsg); goto out_free; } + datamsg->force_delay = !!(msg->msg_flags & MSG_MORE); /* Now send the (possibly) fragmented message. */ list_for_each_entry(chunk, &datamsg->chunks, frag_list) { |
