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authorXin Long <lucien.xin@gmail.com>2017-11-25 21:18:35 +0800
committerDavid S. Miller <davem@davemloft.net>2017-12-01 15:06:24 -0500
commite5f612969c6f965e3bd1158598e0a3b1c4f389b9 (patch)
tree4957b2abccb9a0b95294651446e1e124f4d3cab5 /include/net/sctp
parentd30fc5126efb0c33b7adf5966d3051db2c3d7721 (diff)
downloadlinux-e5f612969c6f965e3bd1158598e0a3b1c4f389b9.tar.bz2
sctp: abandon the whole msg if one part of a fragmented message is abandoned
As rfc3758#section-3.1 demands: A3) When a TSN is "abandoned", if it is part of a fragmented message, all other TSN's within that fragmented message MUST be abandoned at the same time. Besides, if it couldn't handle this, the rest frags would never get assembled in peer side. This patch supports it by adding abandoned flag in sctp_datamsg, when one chunk is being abandoned, set chunk->msg->abandoned as well. Next time when checking for abandoned, go checking chunk->msg->abandoned first. Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/sctp')
-rw-r--r--include/net/sctp/structs.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 16f949eef52f..2f8f93da5dc2 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -503,7 +503,8 @@ struct sctp_datamsg {
/* Did the messenge fail to send? */
int send_error;
u8 send_failed:1,
- can_delay; /* should this message be Nagle delayed */
+ can_delay:1, /* should this message be Nagle delayed */
+ abandoned:1; /* should this message be abandoned */
};
struct sctp_datamsg *sctp_datamsg_from_user(struct sctp_association *,