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authorXin Long <lucien.xin@gmail.com>2019-01-22 02:40:12 +0800
committerDavid S. Miller <davem@davemloft.net>2019-01-24 18:13:57 -0800
commit8220c870cb0f4eaa4e335c9645dbd9a1c461c1dd (patch)
tree21fe38f0c83ed2147736e4ba16f33f69f2c7317e /net/sctp
parent2e6dc4d95110becfe0ff4c3d4749c33ea166e9e7 (diff)
downloadlinux-stericsson-8220c870cb0f4eaa4e335c9645dbd9a1c461c1dd.tar.gz
sctp: improve the events for sctp stream adding
This patch is to improve sctp stream adding events in 2 places: 1. In sctp_process_strreset_addstrm_out(), move up SCTP_MAX_STREAM and in stream allocation failure checks, as the adding has to succeed after reconf_timer stops for the in stream adding request retransmission. 3. In sctp_process_strreset_addstrm_in(), no event should be sent, as no in or out stream is added here. Fixes: 50a41591f110 ("sctp: implement receiver-side procedures for the Add Outgoing Streams Request Parameter") Fixes: c5c4ebb3ab87 ("sctp: implement receiver-side procedures for the Add Incoming Streams Request Parameter") Reported-by: Ying Xu <yinxu@redhat.com> Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp')
-rw-r--r--net/sctp/stream.c19
1 files changed, 8 insertions, 11 deletions
diff --git a/net/sctp/stream.c b/net/sctp/stream.c
index 6c188b06e5e1..80e0ae5534ec 100644
--- a/net/sctp/stream.c
+++ b/net/sctp/stream.c
@@ -866,6 +866,14 @@ struct sctp_chunk *sctp_process_strreset_addstrm_out(
if (!(asoc->strreset_enable & SCTP_ENABLE_CHANGE_ASSOC_REQ))
goto out;
+ in = ntohs(addstrm->number_of_streams);
+ incnt = stream->incnt + in;
+ if (!in || incnt > SCTP_MAX_STREAM)
+ goto out;
+
+ if (sctp_stream_alloc_in(stream, incnt, GFP_ATOMIC))
+ goto out;
+
if (asoc->strreset_chunk) {
if (!sctp_chunk_lookup_strreset_param(
asoc, 0, SCTP_PARAM_RESET_ADD_IN_STREAMS)) {
@@ -889,14 +897,6 @@ struct sctp_chunk *sctp_process_strreset_addstrm_out(
}
}
- in = ntohs(addstrm->number_of_streams);
- incnt = stream->incnt + in;
- if (!in || incnt > SCTP_MAX_STREAM)
- goto out;
-
- if (sctp_stream_alloc_in(stream, incnt, GFP_ATOMIC))
- goto out;
-
stream->incnt = incnt;
result = SCTP_STRRESET_PERFORMED;
@@ -966,9 +966,6 @@ struct sctp_chunk *sctp_process_strreset_addstrm_in(
result = SCTP_STRRESET_PERFORMED;
- *evp = sctp_ulpevent_make_stream_change_event(asoc,
- 0, 0, ntohs(addstrm->number_of_streams), GFP_ATOMIC);
-
out:
sctp_update_strreset_result(asoc, result);
err: