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>

diff --git a/net/sctp/chunk.c b/net/sctp/chunk.c
index 14990e2..0a3dbec 100644 (file)
--- a/net/sctp/chunk.c
+++ b/net/sctp/chunk.c
@@ -179,7 +179,7 @@ struct sctp_datamsg *sctp_datamsg_from_user(struct sctp_association *asoc,
                         msg, msg->expires_at, jiffies);
        }
 
-       if (asoc->prsctp_enable &&
+       if (asoc->peer.prsctp_capable &&
            SCTP_PR_TTL_ENABLED(sinfo->sinfo_flags))
                msg->expires_at =
                        jiffies + msecs_to_jiffies(sinfo->sinfo_timetolive);
@@ -340,7 +340,7 @@ errout:
 /* Check whether this message has expired. */
 int sctp_chunk_abandoned(struct sctp_chunk *chunk)
 {
-       if (!chunk->asoc->prsctp_enable ||
+       if (!chunk->asoc->peer.prsctp_capable ||
            !SCTP_PR_POLICY(chunk->sinfo.sinfo_flags)) {
                struct sctp_datamsg *msg = chunk->msg;
 

diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index e084f35..107233d 100644 (file)
--- 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);