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sctp: add stream interleave enable members and sockopt

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This patch adds intl_enable in asoc and netns, and strm_interleave in
sctp_sock to indicate if stream interleave is enabled and supported.

netns intl_enable would be set via procfs, but that is not added yet
until all stream interleave codes are completely implemented; asoc
intl_enable will be set when doing 4-shakehands.

sp strm_interleave can be set by sockopt SCTP_INTERLEAVING_SUPPORTED
which is also added in this patch. This socket option is defined in
section 4.3.1 of RFC8260.

Note that strm_interleave can only be set by sockopt when both netns
intl_enable and sp frag_interleave are set.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xin Long
2017-12-08 21:03:58 +08:00
committed by David S. Miller
parent 92ff426450
commit 772a58693f
4 changed files with 94 additions and 2 deletions
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2
include/net/sctp/structs.h
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@@ -217,6 +217,7 @@ struct sctp_sock {
disable_fragments:1,
v4mapped:1,
frag_interleave:1,
strm_interleave:1,
recvrcvinfo:1,
recvnxtinfo:1,
data_ready_signalled:1;
@@ -1940,6 +1941,7 @@ struct sctp_association {
__u8 need_ecne:1, /* Need to send an ECNE Chunk? */
temp:1, /* Is it a temporary association? */
force_delay:1,
intl_enable:1,
prsctp_enable:1,
reconf_enable:1;