1 files changed, 13 insertions, 36 deletions

diff --git a/net/sctp/output.c b/net/sctp/output.c
index 5cbda8f1ddfd..fad261d41ec2 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -48,6 +48,7 @@
 #include <linux/ip.h>
 #include <linux/ipv6.h>
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <net/inet_ecn.h>
 #include <net/ip.h>
 #include <net/icmp.h>
@@ -429,23 +430,22 @@ int sctp_packet_transmit(struct sctp_packet *packet)
                 list_del_init(&chunk->list);
                 if (sctp_chunk_is_data(chunk)) {
 
-                        if (!chunk->has_tsn) {
-                                sctp_chunk_assign_ssn(chunk);
-                                sctp_chunk_assign_tsn(chunk);
+                        if (!chunk->resent) {
 
-                        /* 6.3.1 C4) When data is in flight and when allowed
-                         * by rule C5, a new RTT measurement MUST be made each
-                         * round trip.  Furthermore, new RTT measurements
-                         * SHOULD be made no more than once per round-trip
-                         * for a given destination transport address.
-                         */
+                                /* 6.3.1 C4) When data is in flight and when allowed
+                                 * by rule C5, a new RTT measurement MUST be made each
+                                 * round trip.  Furthermore, new RTT measurements
+                                 * SHOULD be made no more than once per round-trip
+                                 * for a given destination transport address.
+                                 */
 
                                 if (!tp->rto_pending) {
                                         chunk->rtt_in_progress = 1;
                                         tp->rto_pending = 1;
                                 }
-                        } else
-                                chunk->resent = 1;
+                        }
+
+                        chunk->resent = 1;
 
                         has_data = 1;
                 }
@@ -557,8 +557,6 @@ int sctp_packet_transmit(struct sctp_packet *packet)
                 struct timer_list *timer;
                 unsigned long timeout;
 
-                tp->last_time_used = jiffies;
-
                 /* Restart the AUTOCLOSE timer when sending data. */
                 if (sctp_state(asoc, ESTABLISHED) && asoc->autoclose) {
                         timer = &asoc->timers[SCTP_EVENT_TIMEOUT_AUTOCLOSE];
@@ -617,7 +615,6 @@ static sctp_xmit_t sctp_packet_can_append_data(struct sctp_packet *packet,
         sctp_xmit_t retval = SCTP_XMIT_OK;
         size_t datasize, rwnd, inflight, flight_size;
         struct sctp_transport *transport = packet->transport;
-        __u32 max_burst_bytes;
         struct sctp_association *asoc = transport->asoc;
         struct sctp_outq *q = &asoc->outqueue;
 
@@ -650,28 +647,6 @@ static sctp_xmit_t sctp_packet_can_append_data(struct sctp_packet *packet,
                 }
         }
 
-        /* sctpimpguide-05 2.14.2
-         * D) When the time comes for the sender to
-         * transmit new DATA chunks, the protocol parameter Max.Burst MUST
-         * first be applied to limit how many new DATA chunks may be sent.
-         * The limit is applied by adjusting cwnd as follows:
-         *      if ((flightsize + Max.Burst * MTU) < cwnd)
-         *              cwnd = flightsize + Max.Burst * MTU
-         */
-        max_burst_bytes = asoc->max_burst * asoc->pathmtu;
-        if ((flight_size + max_burst_bytes) < transport->cwnd) {
-                transport->cwnd = flight_size + max_burst_bytes;
-                SCTP_DEBUG_PRINTK("%s: cwnd limited by max_burst: "
-                                  "transport: %p, cwnd: %d, "
-                                  "ssthresh: %d, flight_size: %d, "
-                                  "pba: %d\n",
-                                  __func__, transport,
-                                  transport->cwnd,
-                                  transport->ssthresh,
-                                  transport->flight_size,
-                                  transport->partial_bytes_acked);
-        }
-
         /* RFC 2960 6.1  Transmission of DATA Chunks
          *
          * B) At any given time, the sender MUST NOT transmit new data
@@ -747,6 +722,8 @@ static void sctp_packet_append_data(struct sctp_packet *packet,
         /* Has been accepted for transmission. */
         if (!asoc->peer.prsctp_capable)
                 chunk->msg->can_abandon = 0;
+        sctp_chunk_assign_tsn(chunk);
+        sctp_chunk_assign_ssn(chunk);
 }
 
 static sctp_xmit_t sctp_packet_will_fit(struct sctp_packet *packet,