diff options
| -rw-r--r-- | include/net/sctp/stream_interleave.h | 1 | ||||
| -rw-r--r-- | net/sctp/sm_sideeffect.c | 9 | ||||
| -rw-r--r-- | net/sctp/stream.c | 6 | ||||
| -rw-r--r-- | net/sctp/stream_interleave.c | 48 |
4 files changed, 52 insertions, 12 deletions
diff --git a/include/net/sctp/stream_interleave.h b/include/net/sctp/stream_interleave.h index 0db15b50c5e6..0b55c70ac5af 100644 --- a/include/net/sctp/stream_interleave.h +++ b/include/net/sctp/stream_interleave.h @@ -51,6 +51,7 @@ struct sctp_stream_interleave { /* (I-)FORWARD-TSN process */ void (*generate_ftsn)(struct sctp_outq *q, __u32 ctsn); bool (*validate_ftsn)(struct sctp_chunk *chunk); + void (*report_ftsn)(struct sctp_ulpq *ulpq, __u32 ftsn); }; void sctp_stream_interleave_init(struct sctp_stream *stream); diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c index 8adde71fdb31..be7c6dbdb283 100644 --- a/net/sctp/sm_sideeffect.c +++ b/net/sctp/sm_sideeffect.c @@ -1368,14 +1368,7 @@ static int sctp_cmd_interpreter(enum sctp_event event_type, break; case SCTP_CMD_REPORT_FWDTSN: - /* Move the Cumulattive TSN Ack ahead. */ - sctp_tsnmap_skip(&asoc->peer.tsn_map, cmd->obj.u32); - - /* purge the fragmentation queue */ - sctp_ulpq_reasm_flushtsn(&asoc->ulpq, cmd->obj.u32); - - /* Abort any in progress partial delivery. */ - sctp_ulpq_abort_pd(&asoc->ulpq, GFP_ATOMIC); + asoc->stream.si->report_ftsn(&asoc->ulpq, cmd->obj.u32); break; case SCTP_CMD_PROCESS_FWDTSN: diff --git a/net/sctp/stream.c b/net/sctp/stream.c index 8370e6cfe897..b3a9f37c1598 100644 --- a/net/sctp/stream.c +++ b/net/sctp/stream.c @@ -754,8 +754,7 @@ struct sctp_chunk *sctp_process_strreset_tsnreq( * performed. */ max_tsn_seen = sctp_tsnmap_get_max_tsn_seen(&asoc->peer.tsn_map); - sctp_ulpq_reasm_flushtsn(&asoc->ulpq, max_tsn_seen); - sctp_ulpq_abort_pd(&asoc->ulpq, GFP_ATOMIC); + asoc->stream.si->report_ftsn(&asoc->ulpq, max_tsn_seen); /* G1: Compute an appropriate value for the Receiver's Next TSN -- the * TSN that the peer should use to send the next DATA chunk. The @@ -1024,8 +1023,7 @@ struct sctp_chunk *sctp_process_strreset_resp( &asoc->peer.tsn_map); LIST_HEAD(temp); - sctp_ulpq_reasm_flushtsn(&asoc->ulpq, mtsn); - sctp_ulpq_abort_pd(&asoc->ulpq, GFP_ATOMIC); + asoc->stream.si->report_ftsn(&asoc->ulpq, mtsn); sctp_tsnmap_init(&asoc->peer.tsn_map, SCTP_TSN_MAP_INITIAL, diff --git a/net/sctp/stream_interleave.c b/net/sctp/stream_interleave.c index cc4a5e320145..f62771ccaf5d 100644 --- a/net/sctp/stream_interleave.c +++ b/net/sctp/stream_interleave.c @@ -1193,6 +1193,52 @@ static bool sctp_validate_iftsn(struct sctp_chunk *chunk) return true; } +static void sctp_report_fwdtsn(struct sctp_ulpq *ulpq, __u32 ftsn) +{ + /* Move the Cumulattive TSN Ack ahead. */ + sctp_tsnmap_skip(&ulpq->asoc->peer.tsn_map, ftsn); + /* purge the fragmentation queue */ + sctp_ulpq_reasm_flushtsn(ulpq, ftsn); + /* Abort any in progress partial delivery. */ + sctp_ulpq_abort_pd(ulpq, GFP_ATOMIC); +} + +static void sctp_intl_reasm_flushtsn(struct sctp_ulpq *ulpq, __u32 ftsn) +{ + struct sk_buff *pos, *tmp; + + skb_queue_walk_safe(&ulpq->reasm, pos, tmp) { + struct sctp_ulpevent *event = sctp_skb2event(pos); + __u32 tsn = event->tsn; + + if (TSN_lte(tsn, ftsn)) { + __skb_unlink(pos, &ulpq->reasm); + sctp_ulpevent_free(event); + } + } + + skb_queue_walk_safe(&ulpq->reasm_uo, pos, tmp) { + struct sctp_ulpevent *event = sctp_skb2event(pos); + __u32 tsn = event->tsn; + + if (TSN_lte(tsn, ftsn)) { + __skb_unlink(pos, &ulpq->reasm_uo); + sctp_ulpevent_free(event); + } + } +} + +static void sctp_report_iftsn(struct sctp_ulpq *ulpq, __u32 ftsn) +{ + /* Move the Cumulattive TSN Ack ahead. */ + sctp_tsnmap_skip(&ulpq->asoc->peer.tsn_map, ftsn); + /* purge the fragmentation queue */ + sctp_intl_reasm_flushtsn(ulpq, ftsn); + /* abort only when it's for all data */ + if (ftsn == sctp_tsnmap_get_max_tsn_seen(&ulpq->asoc->peer.tsn_map)) + sctp_intl_abort_pd(ulpq, GFP_ATOMIC); +} + static struct sctp_stream_interleave sctp_stream_interleave_0 = { .data_chunk_len = sizeof(struct sctp_data_chunk), .ftsn_chunk_len = sizeof(struct sctp_fwdtsn_chunk), @@ -1208,6 +1254,7 @@ static struct sctp_stream_interleave sctp_stream_interleave_0 = { /* FORWARD-TSN process functions */ .generate_ftsn = sctp_generate_fwdtsn, .validate_ftsn = sctp_validate_fwdtsn, + .report_ftsn = sctp_report_fwdtsn, }; static struct sctp_stream_interleave sctp_stream_interleave_1 = { @@ -1225,6 +1272,7 @@ static struct sctp_stream_interleave sctp_stream_interleave_1 = { /* I-FORWARD-TSN process functions */ .generate_ftsn = sctp_generate_iftsn, .validate_ftsn = sctp_validate_iftsn, + .report_ftsn = sctp_report_iftsn, }; void sctp_stream_interleave_init(struct sctp_stream *stream) |