diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/sctp/outqueue.c | 33 | ||||
| -rw-r--r-- | net/sctp/socket.c | 29 | ||||
| -rw-r--r-- | net/sctp/stream.c | 79 |
3 files changed, 131 insertions, 10 deletions
diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c index 34efaa4ef2f6..65abe22d8691 100644 --- a/net/sctp/outqueue.c +++ b/net/sctp/outqueue.c @@ -915,22 +915,28 @@ static void sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp) case SCTP_CID_ECN_ECNE: case SCTP_CID_ASCONF: case SCTP_CID_FWD_TSN: + case SCTP_CID_RECONF: status = sctp_packet_transmit_chunk(packet, chunk, one_packet, gfp); if (status != SCTP_XMIT_OK) { /* put the chunk back */ list_add(&chunk->list, &q->control_chunk_list); - } else { - asoc->stats.octrlchunks++; - /* PR-SCTP C5) If a FORWARD TSN is sent, the - * sender MUST assure that at least one T3-rtx - * timer is running. - */ - if (chunk->chunk_hdr->type == SCTP_CID_FWD_TSN) { - sctp_transport_reset_t3_rtx(transport); - transport->last_time_sent = jiffies; - } + break; + } + + asoc->stats.octrlchunks++; + /* PR-SCTP C5) If a FORWARD TSN is sent, the + * sender MUST assure that at least one T3-rtx + * timer is running. + */ + if (chunk->chunk_hdr->type == SCTP_CID_FWD_TSN) { + sctp_transport_reset_t3_rtx(transport); + transport->last_time_sent = jiffies; } + + if (chunk == asoc->strreset_chunk) + sctp_transport_reset_reconf_timer(transport); + break; default: @@ -1016,6 +1022,8 @@ static void sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp) /* Finally, transmit new packets. */ while ((chunk = sctp_outq_dequeue_data(q)) != NULL) { + __u32 sid = ntohs(chunk->subh.data_hdr->stream); + /* RFC 2960 6.5 Every DATA chunk MUST carry a valid * stream identifier. */ @@ -1038,6 +1046,11 @@ static void sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp) continue; } + if (asoc->stream->out[sid].state == SCTP_STREAM_CLOSED) { + sctp_outq_head_data(q, chunk); + goto sctp_flush_out; + } + /* If there is a specified transport, use it. * Otherwise, we want to use the active path. */ diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 0a9bc984b6c8..bee4dd3feabb 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -3786,6 +3786,32 @@ out: return retval; } +static int sctp_setsockopt_reset_streams(struct sock *sk, + char __user *optval, + unsigned int optlen) +{ + struct sctp_reset_streams *params; + struct sctp_association *asoc; + int retval = -EINVAL; + + if (optlen < sizeof(struct sctp_reset_streams)) + return -EINVAL; + + params = memdup_user(optval, optlen); + if (IS_ERR(params)) + return PTR_ERR(params); + + asoc = sctp_id2assoc(sk, params->srs_assoc_id); + if (!asoc) + goto out; + + retval = sctp_send_reset_streams(asoc, params); + +out: + kfree(params); + return retval; +} + /* API 6.2 setsockopt(), getsockopt() * * Applications use setsockopt() and getsockopt() to set or retrieve @@ -3955,6 +3981,9 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname, case SCTP_ENABLE_STREAM_RESET: retval = sctp_setsockopt_enable_strreset(sk, optval, optlen); break; + case SCTP_RESET_STREAMS: + retval = sctp_setsockopt_reset_streams(sk, optval, optlen); + break; default: retval = -ENOPROTOOPT; break; diff --git a/net/sctp/stream.c b/net/sctp/stream.c index f86de43cbbe5..13d5e07dcd7d 100644 --- a/net/sctp/stream.c +++ b/net/sctp/stream.c @@ -33,6 +33,7 @@ */ #include <net/sctp/sctp.h> +#include <net/sctp/sm.h> struct sctp_stream *sctp_stream_new(__u16 incnt, __u16 outcnt, gfp_t gfp) { @@ -83,3 +84,81 @@ void sctp_stream_clear(struct sctp_stream *stream) for (i = 0; i < stream->incnt; i++) stream->in[i].ssn = 0; } + +static int sctp_send_reconf(struct sctp_association *asoc, + struct sctp_chunk *chunk) +{ + struct net *net = sock_net(asoc->base.sk); + int retval = 0; + + retval = sctp_primitive_RECONF(net, asoc, chunk); + if (retval) + sctp_chunk_free(chunk); + + return retval; +} + +int sctp_send_reset_streams(struct sctp_association *asoc, + struct sctp_reset_streams *params) +{ + struct sctp_stream *stream = asoc->stream; + __u16 i, str_nums, *str_list; + struct sctp_chunk *chunk; + int retval = -EINVAL; + bool out, in; + + if (!asoc->peer.reconf_capable || + !(asoc->strreset_enable & SCTP_ENABLE_RESET_STREAM_REQ)) { + retval = -ENOPROTOOPT; + goto out; + } + + if (asoc->strreset_outstanding) { + retval = -EINPROGRESS; + goto out; + } + + out = params->srs_flags & SCTP_STREAM_RESET_OUTGOING; + in = params->srs_flags & SCTP_STREAM_RESET_INCOMING; + if (!out && !in) + goto out; + + str_nums = params->srs_number_streams; + str_list = params->srs_stream_list; + if (out && str_nums) + for (i = 0; i < str_nums; i++) + if (str_list[i] >= stream->outcnt) + goto out; + + if (in && str_nums) + for (i = 0; i < str_nums; i++) + if (str_list[i] >= stream->incnt) + goto out; + + chunk = sctp_make_strreset_req(asoc, str_nums, str_list, out, in); + if (!chunk) + goto out; + + if (out) { + if (str_nums) + for (i = 0; i < str_nums; i++) + stream->out[str_list[i]].state = + SCTP_STREAM_CLOSED; + else + for (i = 0; i < stream->outcnt; i++) + stream->out[i].state = SCTP_STREAM_CLOSED; + } + + asoc->strreset_outstanding = out + in; + asoc->strreset_chunk = chunk; + sctp_chunk_hold(asoc->strreset_chunk); + + retval = sctp_send_reconf(asoc, chunk); + if (retval) { + sctp_chunk_put(asoc->strreset_chunk); + asoc->strreset_chunk = NULL; + } + +out: + return retval; +} |