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| author | Xin Long <lucien.xin@gmail.com> | 2017-03-26 18:21:15 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-03-29 02:56:15 +0200 |
| commit | f9ba3501d50317697811ff3c48f623f08d616fc8 (patch) | |
| tree | d2f56d5f76f94719818538d4a9194b69b5a50fba /net/sctp/output.c | |
| parent | net: ipconfig: fix ic_close_devs() use-after-free (diff) | |
| download | linux-f9ba3501d50317697811ff3c48f623f08d616fc8.tar.xz linux-f9ba3501d50317697811ff3c48f623f08d616fc8.zip | |
sctp: change to save MSG_MORE flag into assoc
David Laight noticed the support for MSG_MORE with datamsg->force_delay
didn't really work as we expected, as the first msg with MSG_MORE set
would always block the following chunks' dequeuing.
This Patch is to rewrite it by saving the MSG_MORE flag into assoc as
David Laight suggested.
asoc->force_delay is used to save MSG_MORE flag before a msg is sent.
All chunks in queue would not be sent out if asoc->force_delay is set
by the msg with MSG_MORE flag, until a new msg without MSG_MORE flag
clears asoc->force_delay.
Note that this change would not affect the flush is generated by other
triggers, like asoc->state != ESTABLISHED, queue size > pmtu etc.
v1->v2:
Not clear asoc->force_delay after sending the msg with MSG_MORE flag.
Fixes: 4ea0c32f5f42 ("sctp: add support for MSG_MORE")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: David Laight <david.laight@aculab.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/output.c')
| -rw-r--r-- | net/sctp/output.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sctp/output.c b/net/sctp/output.c index 1224421036b3..73fd178007a3 100644 --- a/net/sctp/output.c +++ b/net/sctp/output.c @@ -704,7 +704,7 @@ static sctp_xmit_t sctp_packet_can_append_data(struct sctp_packet *packet, */ if ((sctp_sk(asoc->base.sk)->nodelay || inflight == 0) && - !chunk->msg->force_delay) + !asoc->force_delay) /* Nothing unacked */ return SCTP_XMIT_OK; |