diff options
| author | Michio Honda <micchie@sfc.wide.ad.jp> | 2011-06-17 06:03:23 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-11-09 00:11:29 +0400 |
| commit | ddc4bbee6ef1ed20314be3888dd39ceefe233e79 (patch) | |
| tree | d52c0d7e64e83dd8f17fd0340c3c62402c7cd7ce | |
| parent | 8ce120f11898c921329a5f618d01dcc1e8e69cac (diff) | |
| download | linux-ddc4bbee6ef1ed20314be3888dd39ceefe233e79.tar.xz | |
sctp: fasthandoff with ASCONF at mobile-node
Fast retransmission after changing the last address
with ASCONF negotiation
Signed-off-by: Michio Honda <micchie@sfc.wide.ad.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/sctp/structs.h | 1 | ||||
| -rw-r--r-- | net/sctp/sm_make_chunk.c | 4 | ||||
| -rw-r--r-- | net/sctp/transport.c | 16 |
3 files changed, 20 insertions, 1 deletions
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h index e90e7a9935dd..3382615bd710 100644 --- a/include/net/sctp/structs.h +++ b/include/net/sctp/structs.h @@ -1085,6 +1085,7 @@ void sctp_transport_burst_reset(struct sctp_transport *); unsigned long sctp_transport_timeout(struct sctp_transport *); void sctp_transport_reset(struct sctp_transport *); void sctp_transport_update_pmtu(struct sctp_transport *, u32); +void sctp_transport_immediate_rtx(struct sctp_transport *); /* This is the structure we use to queue packets as they come into diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c index 0121e0ab0351..a85eeeb55dd0 100644 --- a/net/sctp/sm_make_chunk.c +++ b/net/sctp/sm_make_chunk.c @@ -3400,8 +3400,10 @@ int sctp_process_asconf_ack(struct sctp_association *asoc, asconf_len -= length; } - if (no_err && asoc->src_out_of_asoc_ok) + if (no_err && asoc->src_out_of_asoc_ok) { asoc->src_out_of_asoc_ok = 0; + sctp_transport_immediate_rtx(asoc->peer.primary_path); + } /* Free the cached last sent asconf chunk. */ list_del_init(&asconf->transmitted_list); diff --git a/net/sctp/transport.c b/net/sctp/transport.c index 394c57ca2f54..3889330b7b04 100644 --- a/net/sctp/transport.c +++ b/net/sctp/transport.c @@ -641,3 +641,19 @@ void sctp_transport_reset(struct sctp_transport *t) t->cacc.next_tsn_at_change = 0; t->cacc.cacc_saw_newack = 0; } + +/* Schedule retransmission on the given transport */ +void sctp_transport_immediate_rtx(struct sctp_transport *t) +{ + /* Stop pending T3_rtx_timer */ + if (timer_pending(&t->T3_rtx_timer)) { + (void)del_timer(&t->T3_rtx_timer); + sctp_transport_put(t); + } + sctp_retransmit(&t->asoc->outqueue, t, SCTP_RTXR_T3_RTX); + if (!timer_pending(&t->T3_rtx_timer)) { + if (!mod_timer(&t->T3_rtx_timer, jiffies + t->rto)) + sctp_transport_hold(t); + } + return; +} |