Merge http://linux-lksctp.bkbits.net/lksctp-2.5.work

into nuts.davemloft.net:/disk1/BK/net-2.6

include/net/sctp/command.h

@@ -93,6 +93,7 @@ typedef enum {
 	SCTP_CMD_PROCESS_OPERR,  /* Process an ERROR chunk. */
 	SCTP_CMD_REPORT_FWDTSN,	 /* Report new cumulative TSN Ack. */
 	SCTP_CMD_PROCESS_FWDTSN, /* Skips were reported, so process further. */
+	SCTP_CMD_CLEAR_INIT_TAG, /* Clears association peer's inittag. */
 	SCTP_CMD_LAST
 } sctp_verb_t;
 

include/net/sctp/sm.h

@@ -440,6 +440,23 @@ static inline void sctp_add_cmd_sf(sctp_cmd_seq_t *seq, sctp_verb_t verb, sctp_a
 		BUG();
 }
 
+/* Check VTAG of the packet matches the sender's own tag. */
+static inline int
+sctp_vtag_verify(const struct sctp_chunk *chunk,
+		 const struct sctp_association *asoc)
+{
+	/* RFC 2960 Sec 8.5 When receiving an SCTP packet, the endpoint
+	 * MUST ensure that the value in the Verification Tag field of
+	 * the received SCTP packet matches its own Tag. If the received
+	 * Verification Tag value does not match the receiver's own
+	 * tag value, the receiver shall silently discard the packet...
+	 */
+        if (ntohl(chunk->sctp_hdr->vtag) == asoc->c.my_vtag)
+                return 1;
+
+	return 0;
+}
+
 /* Check VTAG of the packet matches the sender's own tag OR its peer's
  * tag and the T bit is set in the Chunk Flags.
  */

net/sctp/sm_sideeffect.c

@@ -429,6 +429,9 @@ static void sctp_cmd_init_failed(sctp_cmd_seq_t *commands,
 		sctp_add_cmd_sf(commands, SCTP_CMD_EVENT_ULP,
 				SCTP_ULPEVENT(event));
 
+	sctp_add_cmd_sf(commands, SCTP_CMD_NEW_STATE,
+			SCTP_STATE(SCTP_STATE_CLOSED));
+
 	/* SEND_FAILED sent later when cleaning up the association. */
 	asoc->outqueue.error = error;
 	sctp_add_cmd_sf(commands, SCTP_CMD_DELETE_TCB, SCTP_NULL());
@@ -457,6 +460,10 @@ static void sctp_cmd_assoc_failed(sctp_cmd_seq_t *commands,
 	sctp_add_cmd_sf(commands, SCTP_CMD_NEW_STATE,
 			SCTP_STATE(SCTP_STATE_CLOSED));
 
+	/* Set sk_err to ECONNRESET on a 1-1 style socket. */
+	if (!sctp_style(asoc->base.sk, UDP))
+		asoc->base.sk->sk_err = ECONNRESET; 
+
 	/* SEND_FAILED sent later when cleaning up the association. */
 	asoc->outqueue.error = error;
 	sctp_add_cmd_sf(commands, SCTP_CMD_DELETE_TCB, SCTP_NULL());
@@ -1272,6 +1279,9 @@ int sctp_cmd_interpreter(sctp_event_t event_type, sctp_subtype_t subtype,
 		case SCTP_CMD_PROCESS_OPERR:
 			sctp_cmd_process_operr(commands, asoc, chunk);
 			break;
+		case SCTP_CMD_CLEAR_INIT_TAG:
+			asoc->peer.i.init_tag = 0;
+			break;
 		default:
 			printk(KERN_WARNING "Impossible command: %u, %p\n",
 			       cmd->verb, cmd->obj.ptr);

net/sctp/socket.c

@@ -1164,6 +1164,11 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
 	if (!asoc) {
 		SCTP_DEBUG_PRINTK("There is no association yet.\n");
 
+		if (sinfo_flags & (MSG_EOF | MSG_ABORT)) {
+			err = -EINVAL;
+			goto out_unlock;
+		}
+
 		/* Check for invalid stream against the stream counts,
 		 * either the default or the user specified stream counts.
 		 */
@@ -4388,7 +4393,11 @@ static int sctp_wait_for_connect(struct sctp_association *asoc, long *timeo_p)
 	return err;
 
 do_error:
-	err = -ECONNREFUSED;
+	if (asoc->counters[SCTP_COUNTER_INIT_ERROR] + 1 >=
+					 	asoc->max_init_attempts)
+		err = -ETIMEDOUT;
+	else
+		err = -ECONNREFUSED;
 	goto out;
 
 do_interrupted: