sctp: change to check peer prsctp_capable when using prsctp polices

Now before using prsctp polices, sctp uses asoc->prsctp_enable to
check if prsctp is enabled. However asoc->prsctp_enable is set only
means local host support prsctp, sctp should not abandon packet if
peer host doesn't enable prsctp.

So this patch is to use asoc->peer.prsctp_capable to check if prsctp
is enabled on both side, instead of asoc->prsctp_enable, as asoc's
peer.prsctp_capable is set only when local and peer both enable prsctp.

Fixes: a6c2f792873a ("sctp: implement prsctp TTL policy")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 4 deletions

diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index e084f35d40d2..107233da5cc9 100644
--- a/net/sctp/outqueue.c
+++ b/net/sctp/outqueue.c
@@ -326,7 +326,7 @@ int sctp_outq_tail(struct sctp_outq *q, struct sctp_chunk *chunk, gfp_t gfp)
 
                         sctp_chunk_hold(chunk);
                         sctp_outq_tail_data(q, chunk);
-                        if (chunk->asoc->prsctp_enable &&
+                        if (chunk->asoc->peer.prsctp_capable &&
                             SCTP_PR_PRIO_ENABLED(chunk->sinfo.sinfo_flags))
                                 chunk->asoc->sent_cnt_removable++;
                         if (chunk->chunk_hdr->flags & SCTP_DATA_UNORDERED)
@@ -442,7 +442,7 @@ void sctp_prsctp_prune(struct sctp_association *asoc,
 {
         struct sctp_transport *transport;
 
-        if (!asoc->prsctp_enable || !asoc->sent_cnt_removable)
+        if (!asoc->peer.prsctp_capable || !asoc->sent_cnt_removable)
                 return;
 
         msg_len = sctp_prsctp_prune_sent(asoc, sinfo,
@@ -1055,7 +1055,7 @@ static int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp)
 
                                 /* Mark as failed send. */
                                 sctp_chunk_fail(chunk, SCTP_ERROR_INV_STRM);
-                                if (asoc->prsctp_enable &&
+                                if (asoc->peer.prsctp_capable &&
                                     SCTP_PR_PRIO_ENABLED(chunk->sinfo.sinfo_flags))
                                         asoc->sent_cnt_removable--;
                                 sctp_chunk_free(chunk);
@@ -1347,7 +1347,7 @@ int sctp_outq_sack(struct sctp_outq *q, struct sctp_chunk *chunk)
                 tsn = ntohl(tchunk->subh.data_hdr->tsn);
                 if (TSN_lte(tsn, ctsn)) {
                         list_del_init(&tchunk->transmitted_list);
-                        if (asoc->prsctp_enable &&
+                        if (asoc->peer.prsctp_capable &&
                             SCTP_PR_PRIO_ENABLED(chunk->sinfo.sinfo_flags))
                                 asoc->sent_cnt_removable--;
                         sctp_chunk_free(tchunk);