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Diffstat (limited to 'net/sctp/outqueue.c')
-rw-r--r--net/sctp/outqueue.c214
1 files changed, 49 insertions, 165 deletions
diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index be35e2dbcc9..ef9e2bbc0f2 100644
--- a/net/sctp/outqueue.c
+++ b/net/sctp/outqueue.c
@@ -299,10 +299,10 @@ int sctp_outq_tail(struct sctp_outq *q, struct sctp_chunk *chunk)
struct net *net = sock_net(q->asoc->base.sk);
int error = 0;
- SCTP_DEBUG_PRINTK("sctp_outq_tail(%p, %p[%s])\n",
- q, chunk, chunk && chunk->chunk_hdr ?
- sctp_cname(SCTP_ST_CHUNK(chunk->chunk_hdr->type))
- : "Illegal Chunk");
+ pr_debug("%s: outq:%p, chunk:%p[%s]\n", __func__, q, chunk,
+ chunk && chunk->chunk_hdr ?
+ sctp_cname(SCTP_ST_CHUNK(chunk->chunk_hdr->type)) :
+ "illegal chunk");
/* If it is data, queue it up, otherwise, send it
* immediately.
@@ -328,10 +328,10 @@ int sctp_outq_tail(struct sctp_outq *q, struct sctp_chunk *chunk)
break;
default:
- SCTP_DEBUG_PRINTK("outqueueing (%p, %p[%s])\n",
- q, chunk, chunk && chunk->chunk_hdr ?
- sctp_cname(SCTP_ST_CHUNK(chunk->chunk_hdr->type))
- : "Illegal Chunk");
+ pr_debug("%s: outqueueing: outq:%p, chunk:%p[%s])\n",
+ __func__, q, chunk, chunk && chunk->chunk_hdr ?
+ sctp_cname(SCTP_ST_CHUNK(chunk->chunk_hdr->type)) :
+ "illegal chunk");
sctp_outq_tail_data(q, chunk);
if (chunk->chunk_hdr->flags & SCTP_DATA_UNORDERED)
@@ -460,14 +460,10 @@ void sctp_retransmit_mark(struct sctp_outq *q,
}
}
- SCTP_DEBUG_PRINTK("%s: transport: %p, reason: %d, "
- "cwnd: %d, ssthresh: %d, flight_size: %d, "
- "pba: %d\n", __func__,
- transport, reason,
- transport->cwnd, transport->ssthresh,
- transport->flight_size,
- transport->partial_bytes_acked);
-
+ pr_debug("%s: transport:%p, reason:%d, cwnd:%d, ssthresh:%d, "
+ "flight_size:%d, pba:%d\n", __func__, transport, reason,
+ transport->cwnd, transport->ssthresh, transport->flight_size,
+ transport->partial_bytes_acked);
}
/* Mark all the eligible packets on a transport for retransmission and force
@@ -1014,19 +1010,13 @@ static int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout)
sctp_transport_burst_limited(transport);
}
- SCTP_DEBUG_PRINTK("sctp_outq_flush(%p, %p[%s]), ",
- q, chunk,
- chunk && chunk->chunk_hdr ?
- sctp_cname(SCTP_ST_CHUNK(
- chunk->chunk_hdr->type))
- : "Illegal Chunk");
-
- SCTP_DEBUG_PRINTK("TX TSN 0x%x skb->head "
- "%p skb->users %d.\n",
- ntohl(chunk->subh.data_hdr->tsn),
- chunk->skb ?chunk->skb->head : NULL,
- chunk->skb ?
- atomic_read(&chunk->skb->users) : -1);
+ pr_debug("%s: outq:%p, chunk:%p[%s], tx-tsn:0x%x skb->head:%p "
+ "skb->users:%d\n",
+ __func__, q, chunk, chunk && chunk->chunk_hdr ?
+ sctp_cname(SCTP_ST_CHUNK(chunk->chunk_hdr->type)) :
+ "illegal chunk", ntohl(chunk->subh.data_hdr->tsn),
+ chunk->skb ? chunk->skb->head : NULL, chunk->skb ?
+ atomic_read(&chunk->skb->users) : -1);
/* Add the chunk to the packet. */
status = sctp_packet_transmit_chunk(packet, chunk, 0);
@@ -1038,10 +1028,10 @@ static int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout)
/* We could not append this chunk, so put
* the chunk back on the output queue.
*/
- SCTP_DEBUG_PRINTK("sctp_outq_flush: could "
- "not transmit TSN: 0x%x, status: %d\n",
- ntohl(chunk->subh.data_hdr->tsn),
- status);
+ pr_debug("%s: could not transmit tsn:0x%x, status:%d\n",
+ __func__, ntohl(chunk->subh.data_hdr->tsn),
+ status);
+
sctp_outq_head_data(q, chunk);
goto sctp_flush_out;
break;
@@ -1284,11 +1274,10 @@ int sctp_outq_sack(struct sctp_outq *q, struct sctp_chunk *chunk)
sctp_generate_fwdtsn(q, sack_ctsn);
- SCTP_DEBUG_PRINTK("%s: sack Cumulative TSN Ack is 0x%x.\n",
- __func__, sack_ctsn);
- SCTP_DEBUG_PRINTK("%s: Cumulative TSN Ack of association, "
- "%p is 0x%x. Adv peer ack point: 0x%x\n",
- __func__, asoc, ctsn, asoc->adv_peer_ack_point);
+ pr_debug("%s: sack cumulative tsn ack:0x%x\n", __func__, sack_ctsn);
+ pr_debug("%s: cumulative tsn ack of assoc:%p is 0x%x, "
+ "advertised peer ack point:0x%x\n", __func__, asoc, ctsn,
+ asoc->adv_peer_ack_point);
/* See if all chunks are acked.
* Make sure the empty queue handler will get run later.
@@ -1304,7 +1293,7 @@ int sctp_outq_sack(struct sctp_outq *q, struct sctp_chunk *chunk)
goto finish;
}
- SCTP_DEBUG_PRINTK("sack queue is empty.\n");
+ pr_debug("%s: sack queue is empty\n", __func__);
finish:
return q->empty;
}
@@ -1345,21 +1334,7 @@ static void sctp_check_transmitted(struct sctp_outq *q,
__u8 restart_timer = 0;
int bytes_acked = 0;
int migrate_bytes = 0;
-
- /* These state variables are for coherent debug output. --xguo */
-
-#if SCTP_DEBUG
- __u32 dbg_ack_tsn = 0; /* An ACKed TSN range starts here... */
- __u32 dbg_last_ack_tsn = 0; /* ...and finishes here. */
- __u32 dbg_kept_tsn = 0; /* An un-ACKed range starts here... */
- __u32 dbg_last_kept_tsn = 0; /* ...and finishes here. */
-
- /* 0 : The last TSN was ACKed.
- * 1 : The last TSN was NOT ACKed (i.e. KEPT).
- * -1: We need to initialize.
- */
- int dbg_prt_state = -1;
-#endif /* SCTP_DEBUG */
+ bool forward_progress = false;
sack_ctsn = ntohl(sack->cum_tsn_ack);
@@ -1426,6 +1401,7 @@ static void sctp_check_transmitted(struct sctp_outq *q,
bytes_acked += sctp_data_size(tchunk);
if (!tchunk->transport)
migrate_bytes += sctp_data_size(tchunk);
+ forward_progress = true;
}
if (TSN_lte(tsn, sack_ctsn)) {
@@ -1439,6 +1415,7 @@ static void sctp_check_transmitted(struct sctp_outq *q,
* current RTO.
*/
restart_timer = 1;
+ forward_progress = true;
if (!tchunk->tsn_gap_acked) {
/*
@@ -1482,57 +1459,11 @@ static void sctp_check_transmitted(struct sctp_outq *q,
*/
list_add_tail(lchunk, &tlist);
}
-
-#if SCTP_DEBUG
- switch (dbg_prt_state) {
- case 0: /* last TSN was ACKed */
- if (dbg_last_ack_tsn + 1 == tsn) {
- /* This TSN belongs to the
- * current ACK range.
- */
- break;
- }
-
- if (dbg_last_ack_tsn != dbg_ack_tsn) {
- /* Display the end of the
- * current range.
- */
- SCTP_DEBUG_PRINTK_CONT("-%08x",
- dbg_last_ack_tsn);
- }
-
- /* Start a new range. */
- SCTP_DEBUG_PRINTK_CONT(",%08x", tsn);
- dbg_ack_tsn = tsn;
- break;
-
- case 1: /* The last TSN was NOT ACKed. */
- if (dbg_last_kept_tsn != dbg_kept_tsn) {
- /* Display the end of current range. */
- SCTP_DEBUG_PRINTK_CONT("-%08x",
- dbg_last_kept_tsn);
- }
-
- SCTP_DEBUG_PRINTK_CONT("\n");
-
- /* FALL THROUGH... */
- default:
- /* This is the first-ever TSN we examined. */
- /* Start a new range of ACK-ed TSNs. */
- SCTP_DEBUG_PRINTK("ACKed: %08x", tsn);
- dbg_prt_state = 0;
- dbg_ack_tsn = tsn;
- }
-
- dbg_last_ack_tsn = tsn;
-#endif /* SCTP_DEBUG */
-
} else {
if (tchunk->tsn_gap_acked) {
- SCTP_DEBUG_PRINTK("%s: Receiver reneged on "
- "data TSN: 0x%x\n",
- __func__,
- tsn);
+ pr_debug("%s: receiver reneged on data TSN:0x%x\n",
+ __func__, tsn);
+
tchunk->tsn_gap_acked = 0;
if (tchunk->transport)
@@ -1551,59 +1482,9 @@ static void sctp_check_transmitted(struct sctp_outq *q,
}
list_add_tail(lchunk, &tlist);
-
-#if SCTP_DEBUG
- /* See the above comments on ACK-ed TSNs. */
- switch (dbg_prt_state) {
- case 1:
- if (dbg_last_kept_tsn + 1 == tsn)
- break;
-
- if (dbg_last_kept_tsn != dbg_kept_tsn)
- SCTP_DEBUG_PRINTK_CONT("-%08x",
- dbg_last_kept_tsn);
-
- SCTP_DEBUG_PRINTK_CONT(",%08x", tsn);
- dbg_kept_tsn = tsn;
- break;
-
- case 0:
- if (dbg_last_ack_tsn != dbg_ack_tsn)
- SCTP_DEBUG_PRINTK_CONT("-%08x",
- dbg_last_ack_tsn);
- SCTP_DEBUG_PRINTK_CONT("\n");
-
- /* FALL THROUGH... */
- default:
- SCTP_DEBUG_PRINTK("KEPT: %08x",tsn);
- dbg_prt_state = 1;
- dbg_kept_tsn = tsn;
- }
-
- dbg_last_kept_tsn = tsn;
-#endif /* SCTP_DEBUG */
}
}
-#if SCTP_DEBUG
- /* Finish off the last range, displaying its ending TSN. */
- switch (dbg_prt_state) {
- case 0:
- if (dbg_last_ack_tsn != dbg_ack_tsn) {
- SCTP_DEBUG_PRINTK_CONT("-%08x\n", dbg_last_ack_tsn);
- } else {
- SCTP_DEBUG_PRINTK_CONT("\n");
- }
- break;
-
- case 1:
- if (dbg_last_kept_tsn != dbg_kept_tsn) {
- SCTP_DEBUG_PRINTK_CONT("-%08x\n", dbg_last_kept_tsn);
- } else {
- SCTP_DEBUG_PRINTK_CONT("\n");
- }
- }
-#endif /* SCTP_DEBUG */
if (transport) {
if (bytes_acked) {
struct sctp_association *asoc = transport->asoc;
@@ -1625,6 +1506,7 @@ static void sctp_check_transmitted(struct sctp_outq *q,
*/
transport->error_count = 0;
transport->asoc->overall_error_count = 0;
+ forward_progress = true;
/*
* While in SHUTDOWN PENDING, we may have started
@@ -1676,9 +1558,9 @@ static void sctp_check_transmitted(struct sctp_outq *q,
!list_empty(&tlist) &&
(sack_ctsn+2 == q->asoc->next_tsn) &&
q->asoc->state < SCTP_STATE_SHUTDOWN_PENDING) {
- SCTP_DEBUG_PRINTK("%s: SACK received for zero "
- "window probe: %u\n",
- __func__, sack_ctsn);
+ pr_debug("%s: sack received for zero window "
+ "probe:%u\n", __func__, sack_ctsn);
+
q->asoc->overall_error_count = 0;
transport->error_count = 0;
}
@@ -1698,6 +1580,11 @@ static void sctp_check_transmitted(struct sctp_outq *q,
jiffies + transport->rto))
sctp_transport_hold(transport);
}
+
+ if (forward_progress) {
+ if (transport->dst)
+ dst_confirm(transport->dst);
+ }
}
list_splice(&tlist, transmitted_queue);
@@ -1739,10 +1626,8 @@ static void sctp_mark_missing(struct sctp_outq *q,
count_of_newacks, tsn)) {
chunk->tsn_missing_report++;
- SCTP_DEBUG_PRINTK(
- "%s: TSN 0x%x missing counter: %d\n",
- __func__, tsn,
- chunk->tsn_missing_report);
+ pr_debug("%s: tsn:0x%x missing counter:%d\n",
+ __func__, tsn, chunk->tsn_missing_report);
}
}
/*
@@ -1762,11 +1647,10 @@ static void sctp_mark_missing(struct sctp_outq *q,
if (do_fast_retransmit)
sctp_retransmit(q, transport, SCTP_RTXR_FAST_RTX);
- SCTP_DEBUG_PRINTK("%s: 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);
+ pr_debug("%s: 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);
}
}