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-rw-r--r--net/sctp/sm_statefuns.c52
1 files changed, 48 insertions, 4 deletions
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index a1be9d93f1a..0c9f37eb7d8 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -143,6 +143,12 @@ static sctp_ierror_t sctp_sf_authenticate(const struct sctp_endpoint *ep,
const sctp_subtype_t type,
struct sctp_chunk *chunk);
+static sctp_disposition_t __sctp_sf_do_9_1_abort(const struct sctp_endpoint *ep,
+ const struct sctp_association *asoc,
+ const sctp_subtype_t type,
+ void *arg,
+ sctp_cmd_seq_t *commands);
+
/* Small helper function that checks if the chunk length
* is of the appropriate length. The 'required_length' argument
* is set to be the size of a specific chunk we are testing.
@@ -2073,11 +2079,20 @@ sctp_disposition_t sctp_sf_shutdown_pending_abort(
if (!sctp_chunk_length_valid(chunk, sizeof(sctp_abort_chunk_t)))
return sctp_sf_pdiscard(ep, asoc, type, arg, commands);
+ /* ADD-IP: Special case for ABORT chunks
+ * F4) One special consideration is that ABORT Chunks arriving
+ * destined to the IP address being deleted MUST be
+ * ignored (see Section 5.3.1 for further details).
+ */
+ if (SCTP_ADDR_DEL ==
+ sctp_bind_addr_state(&asoc->base.bind_addr, &chunk->dest))
+ return sctp_sf_discard_chunk(ep, asoc, type, arg, commands);
+
/* Stop the T5-shutdown guard timer. */
sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_STOP,
SCTP_TO(SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD));
- return sctp_sf_do_9_1_abort(ep, asoc, type, arg, commands);
+ return __sctp_sf_do_9_1_abort(ep, asoc, type, arg, commands);
}
/*
@@ -2109,6 +2124,15 @@ sctp_disposition_t sctp_sf_shutdown_sent_abort(const struct sctp_endpoint *ep,
if (!sctp_chunk_length_valid(chunk, sizeof(sctp_abort_chunk_t)))
return sctp_sf_pdiscard(ep, asoc, type, arg, commands);
+ /* ADD-IP: Special case for ABORT chunks
+ * F4) One special consideration is that ABORT Chunks arriving
+ * destined to the IP address being deleted MUST be
+ * ignored (see Section 5.3.1 for further details).
+ */
+ if (SCTP_ADDR_DEL ==
+ sctp_bind_addr_state(&asoc->base.bind_addr, &chunk->dest))
+ return sctp_sf_discard_chunk(ep, asoc, type, arg, commands);
+
/* Stop the T2-shutdown timer. */
sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_STOP,
SCTP_TO(SCTP_EVENT_TIMEOUT_T2_SHUTDOWN));
@@ -2117,7 +2141,7 @@ sctp_disposition_t sctp_sf_shutdown_sent_abort(const struct sctp_endpoint *ep,
sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_STOP,
SCTP_TO(SCTP_EVENT_TIMEOUT_T5_SHUTDOWN_GUARD));
- return sctp_sf_do_9_1_abort(ep, asoc, type, arg, commands);
+ return __sctp_sf_do_9_1_abort(ep, asoc, type, arg, commands);
}
/*
@@ -2344,8 +2368,6 @@ sctp_disposition_t sctp_sf_do_9_1_abort(const struct sctp_endpoint *ep,
sctp_cmd_seq_t *commands)
{
struct sctp_chunk *chunk = arg;
- unsigned len;
- __be16 error = SCTP_ERROR_NO_ERROR;
if (!sctp_vtag_verify_either(chunk, asoc))
return sctp_sf_pdiscard(ep, asoc, type, arg, commands);
@@ -2363,6 +2385,28 @@ sctp_disposition_t sctp_sf_do_9_1_abort(const struct sctp_endpoint *ep,
if (!sctp_chunk_length_valid(chunk, sizeof(sctp_abort_chunk_t)))
return sctp_sf_pdiscard(ep, asoc, type, arg, commands);
+ /* ADD-IP: Special case for ABORT chunks
+ * F4) One special consideration is that ABORT Chunks arriving
+ * destined to the IP address being deleted MUST be
+ * ignored (see Section 5.3.1 for further details).
+ */
+ if (SCTP_ADDR_DEL ==
+ sctp_bind_addr_state(&asoc->base.bind_addr, &chunk->dest))
+ return sctp_sf_discard_chunk(ep, asoc, type, arg, commands);
+
+ return __sctp_sf_do_9_1_abort(ep, asoc, type, arg, commands);
+}
+
+static sctp_disposition_t __sctp_sf_do_9_1_abort(const struct sctp_endpoint *ep,
+ const struct sctp_association *asoc,
+ const sctp_subtype_t type,
+ void *arg,
+ sctp_cmd_seq_t *commands)
+{
+ struct sctp_chunk *chunk = arg;
+ unsigned len;
+ __be16 error = SCTP_ERROR_NO_ERROR;
+
/* See if we have an error cause code in the chunk. */
len = ntohs(chunk->chunk_hdr->length);
if (len >= sizeof(struct sctp_chunkhdr) + sizeof(struct sctp_errhdr))