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| author | Xin Long <lucien.xin@gmail.com> | 2017-02-18 20:52:46 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-02-20 18:26:09 +0300 |
| commit | 4ea0c32f5f42f7ef33a7ecfb9b61ff0cad9b3c08 (patch) | |
| tree | ef5b3d50db0a6e1839f48be2b8484d11ab2ba9a2 /include/net | |
| parent | b7018d0b63003c0474451991797113605f26ee81 (diff) | |
| download | linux-4ea0c32f5f42f7ef33a7ecfb9b61ff0cad9b3c08.tar.xz | |
sctp: add support for MSG_MORE
This patch is to add support for MSG_MORE on sctp.
It adds force_delay in sctp_datamsg to save MSG_MORE, and sets it after
creating datamsg according to the send flag. sctp_packet_can_append_data
then uses it to decide if the chunks of this msg will be sent at once or
delay it.
Note that unlike [1], this patch saves MSG_MORE in datamsg, instead of
in assoc. As sctp enqueues the chunks first, then dequeue them one by
one. If it's saved in assoc,the current msg's send flag (MSG_MORE) may
affect other chunks' bundling.
Since last patch, sctp flush out queue once assoc state falls into
SHUTDOWN_PENDING, the close block problem mentioned in [1] has been
solved as well.
[1] https://patchwork.ozlabs.org/patch/372404/
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/sctp/structs.h | 1 |
1 files changed, 1 insertions, 0 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 */ }; |