diff options
Diffstat (limited to 'net/sctp/sm_statefuns.c')
| -rw-r--r-- | net/sctp/sm_statefuns.c | 76 |
1 files changed, 38 insertions, 38 deletions
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c index 27cc444aaf1..fbbc9e6a3b7 100644 --- a/net/sctp/sm_statefuns.c +++ b/net/sctp/sm_statefuns.c @@ -440,7 +440,6 @@ sctp_disposition_t sctp_sf_do_5_1C_ack(const struct sctp_endpoint *ep, { struct sctp_chunk *chunk = arg; sctp_init_chunk_t *initchunk; - __u32 init_tag; struct sctp_chunk *err_chunk; struct sctp_packet *packet; sctp_error_t error; @@ -462,24 +461,6 @@ sctp_disposition_t sctp_sf_do_5_1C_ack(const struct sctp_endpoint *ep, /* Grab the INIT header. */ chunk->subh.init_hdr = (sctp_inithdr_t *) chunk->skb->data; - init_tag = ntohl(chunk->subh.init_hdr->init_tag); - - /* Verification Tag: 3.3.3 - * If the value of the Initiate Tag in a received INIT ACK - * chunk is found to be 0, the receiver MUST treat it as an - * error and close the association by transmitting an ABORT. - */ - if (!init_tag) { - struct sctp_chunk *reply = sctp_make_abort(asoc, chunk, 0); - if (!reply) - goto nomem; - - sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(reply)); - return sctp_stop_t1_and_abort(commands, SCTP_ERROR_INV_PARAM, - ECONNREFUSED, asoc, - chunk->transport); - } - /* Verify the INIT chunk before processing it. */ err_chunk = NULL; if (!sctp_verify_init(asoc, chunk->chunk_hdr->type, @@ -550,9 +531,6 @@ sctp_disposition_t sctp_sf_do_5_1C_ack(const struct sctp_endpoint *ep, SCTP_CHUNK(err_chunk)); return SCTP_DISPOSITION_CONSUME; - -nomem: - return SCTP_DISPOSITION_NOMEM; } /* @@ -688,12 +666,12 @@ sctp_disposition_t sctp_sf_do_5_1D_ce(const struct sctp_endpoint *ep, goto nomem_ev; /* Sockets API Draft Section 5.3.1.6 - * When a peer sends a Adaption Layer Indication parameter , SCTP + * When a peer sends a Adaptation Layer Indication parameter , SCTP * delivers this notification to inform the application that of the - * peers requested adaption layer. + * peers requested adaptation layer. */ - if (new_asoc->peer.adaption_ind) { - ai_ev = sctp_ulpevent_make_adaption_indication(new_asoc, + if (new_asoc->peer.adaptation_ind) { + ai_ev = sctp_ulpevent_make_adaptation_indication(new_asoc, GFP_ATOMIC); if (!ai_ev) goto nomem_aiev; @@ -820,12 +798,12 @@ sctp_disposition_t sctp_sf_do_5_1E_ca(const struct sctp_endpoint *ep, sctp_add_cmd_sf(commands, SCTP_CMD_EVENT_ULP, SCTP_ULPEVENT(ev)); /* Sockets API Draft Section 5.3.1.6 - * When a peer sends a Adaption Layer Indication parameter , SCTP + * When a peer sends a Adaptation Layer Indication parameter , SCTP * delivers this notification to inform the application that of the - * peers requested adaption layer. + * peers requested adaptation layer. */ - if (asoc->peer.adaption_ind) { - ev = sctp_ulpevent_make_adaption_indication(asoc, GFP_ATOMIC); + if (asoc->peer.adaptation_ind) { + ev = sctp_ulpevent_make_adaptation_indication(asoc, GFP_ATOMIC); if (!ev) goto nomem; @@ -1553,6 +1531,28 @@ sctp_disposition_t sctp_sf_do_5_2_2_dupinit(const struct sctp_endpoint *ep, } +/* + * Unexpected INIT-ACK handler. + * + * Section 5.2.3 + * If an INIT ACK received by an endpoint in any state other than the + * COOKIE-WAIT state, the endpoint should discard the INIT ACK chunk. + * An unexpected INIT ACK usually indicates the processing of an old or + * duplicated INIT chunk. +*/ +sctp_disposition_t sctp_sf_do_5_2_3_initack(const struct sctp_endpoint *ep, + const struct sctp_association *asoc, + const sctp_subtype_t type, + void *arg, sctp_cmd_seq_t *commands) +{ + /* Per the above section, we'll discard the chunk if we have an + * endpoint. If this is an OOTB INIT-ACK, treat it as such. + */ + if (ep == sctp_sk((sctp_get_ctl_sock()))->ep) + return sctp_sf_ootb(ep, asoc, type, arg, commands); + else + return sctp_sf_discard_chunk(ep, asoc, type, arg, commands); +} /* Unexpected COOKIE-ECHO handler for peer restart (Table 2, action 'A') * @@ -1698,12 +1698,12 @@ static sctp_disposition_t sctp_sf_do_dupcook_b(const struct sctp_endpoint *ep, sctp_add_cmd_sf(commands, SCTP_CMD_EVENT_ULP, SCTP_ULPEVENT(ev)); /* Sockets API Draft Section 5.3.1.6 - * When a peer sends a Adaption Layer Indication parameter , SCTP + * When a peer sends a Adaptation Layer Indication parameter , SCTP * delivers this notification to inform the application that of the - * peers requested adaption layer. + * peers requested adaptation layer. */ - if (asoc->peer.adaption_ind) { - ev = sctp_ulpevent_make_adaption_indication(asoc, GFP_ATOMIC); + if (asoc->peer.adaptation_ind) { + ev = sctp_ulpevent_make_adaptation_indication(asoc, GFP_ATOMIC); if (!ev) goto nomem_ev; @@ -1791,12 +1791,12 @@ static sctp_disposition_t sctp_sf_do_dupcook_d(const struct sctp_endpoint *ep, goto nomem; /* Sockets API Draft Section 5.3.1.6 - * When a peer sends a Adaption Layer Indication parameter, + * When a peer sends a Adaptation Layer Indication parameter, * SCTP delivers this notification to inform the application - * that of the peers requested adaption layer. + * that of the peers requested adaptation layer. */ - if (asoc->peer.adaption_ind) { - ai_ev = sctp_ulpevent_make_adaption_indication(asoc, + if (asoc->peer.adaptation_ind) { + ai_ev = sctp_ulpevent_make_adaptation_indication(asoc, GFP_ATOMIC); if (!ai_ev) goto nomem; |