Merge branch 'sctp-tidyup'

Xin Long says:

====================
sctp: tidy up some ep and asoc feature flags

This patchset is to remove some unnecessary feature flags from
sctp_assocation and move some others to the right places.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

Author: davem330

include/net/sctp/structs.h

@@ -219,7 +219,6 @@ struct sctp_sock {
 		disable_fragments:1,
 		v4mapped:1,
 		frag_interleave:1,
-		strm_interleave:1,
 		recvrcvinfo:1,
 		recvnxtinfo:1,
 		data_ready_signalled:1;
@@ -1324,6 +1323,7 @@ struct sctp_endpoint {
 	struct list_head endpoint_shared_keys;
 	__u16 active_key_id;
 	__u8  auth_enable:1,
+	      intl_enable:1,
 	      prsctp_enable:1,
 	      reconf_enable:1;
 
@@ -1679,28 +1679,30 @@ struct sctp_association {
 		__be16 addip_disabled_mask;
 
 		/* These are capabilities which our peer advertised.  */
-		__u8	ecn_capable:1,      /* Can peer do ECN? */
+		__u16	ecn_capable:1,      /* Can peer do ECN? */
 			ipv4_address:1,     /* Peer understands IPv4 addresses? */
 			ipv6_address:1,     /* Peer understands IPv6 addresses? */
 			hostname_address:1, /* Peer understands DNS addresses? */
 			asconf_capable:1,   /* Does peer support ADDIP? */
 			prsctp_capable:1,   /* Can peer do PR-SCTP? */
 			reconf_capable:1,   /* Can peer do RE-CONFIG? */
-			auth_capable:1;     /* Is peer doing SCTP-AUTH? */
-
-		/* sack_needed : This flag indicates if the next received
-		 *             : packet is to be responded to with a
-		 *             : SACK. This is initialized to 0.  When a packet
-		 *             : is received sack_cnt is incremented. If this value
-		 *             : reaches 2 or more, a SACK is sent and the
-		 *             : value is reset to 0. Note: This is used only
-		 *             : when no DATA chunks are received out of
-		 *             : order.  When DATA chunks are out of order,
-		 *             : SACK's are not delayed (see Section 6).
-		 */
-		__u8    sack_needed:1,     /* Do we need to sack the peer? */
+			intl_capable:1,     /* Can peer do INTERLEAVE */
+			auth_capable:1,     /* Is peer doing SCTP-AUTH? */
+			/* sack_needed:
+			 *   This flag indicates if the next received
+			 *   packet is to be responded to with a
+			 *   SACK. This is initialized to 0.  When a packet
+			 *   is received sack_cnt is incremented. If this value
+			 *   reaches 2 or more, a SACK is sent and the
+			 *   value is reset to 0. Note: This is used only
+			 *   when no DATA chunks are received out of
+			 *   order.  When DATA chunks are out of order,
+			 *   SACK's are not delayed (see Section 6).
+			 */
+			sack_needed:1,     /* Do we need to sack the peer? */
 			sack_generation:1,
 			zero_window_announced:1;
+
 		__u32	sack_cnt;
 
 		__u32   adaptation_ind;	 /* Adaptation Code point. */
@@ -2049,10 +2051,7 @@ struct sctp_association {
 
 	__u8 need_ecne:1,	/* Need to send an ECNE Chunk? */
 	     temp:1,		/* Is it a temporary association? */
-	     force_delay:1,
-	     intl_enable:1,
-	     prsctp_enable:1,
-	     reconf_enable:1;
+	     force_delay:1;
 
 	__u8 strreset_enable;
 	__u8 strreset_outstanding; /* request param count on the fly */

net/sctp/associola.c

@@ -261,8 +261,6 @@ static struct sctp_association *sctp_association_init(
 		goto stream_free;
 
 	asoc->active_key_id = ep->active_key_id;
-	asoc->prsctp_enable = ep->prsctp_enable;
-	asoc->reconf_enable = ep->reconf_enable;
 	asoc->strreset_enable = ep->strreset_enable;
 
 	/* Save the hmacs and chunks list into this association */

net/sctp/sm_make_chunk.c

@@ -247,7 +247,7 @@ struct sctp_chunk *sctp_make_init(const struct sctp_association *asoc,
 	chunksize += SCTP_PAD4(SCTP_SAT_LEN(num_types));
 	chunksize += sizeof(ecap_param);
 
-	if (asoc->prsctp_enable)
+	if (asoc->ep->prsctp_enable)
 		chunksize += sizeof(prsctp_param);
 
 	/* ADDIP: Section 4.2.7:
@@ -261,15 +261,15 @@ struct sctp_chunk *sctp_make_init(const struct sctp_association *asoc,
 		num_ext += 2;
 	}
 
-	if (asoc->reconf_enable) {
+	if (asoc->ep->reconf_enable) {
 		extensions[num_ext] = SCTP_CID_RECONF;
 		num_ext += 1;
 	}
 
 	if (sp->adaptation_ind)
 		chunksize += sizeof(aiparam);
 
-	if (sp->strm_interleave) {
+	if (asoc->ep->intl_enable) {
 		extensions[num_ext] = SCTP_CID_I_DATA;
 		num_ext += 1;
 	}
@@ -348,7 +348,7 @@ struct sctp_chunk *sctp_make_init(const struct sctp_association *asoc,
 		sctp_addto_param(retval, num_ext, extensions);
 	}
 
-	if (asoc->prsctp_enable)
+	if (asoc->ep->prsctp_enable)
 		sctp_addto_chunk(retval, sizeof(prsctp_param), &prsctp_param);
 
 	if (sp->adaptation_ind) {
@@ -438,7 +438,7 @@ struct sctp_chunk *sctp_make_init_ack(const struct sctp_association *asoc,
 	if (sp->adaptation_ind)
 		chunksize += sizeof(aiparam);
 
-	if (asoc->intl_enable) {
+	if (asoc->peer.intl_capable) {
 		extensions[num_ext] = SCTP_CID_I_DATA;
 		num_ext += 1;
 	}
@@ -2007,12 +2007,11 @@ static void sctp_process_ext_param(struct sctp_association *asoc,
 	for (i = 0; i < num_ext; i++) {
 		switch (param.ext->chunks[i]) {
 		case SCTP_CID_RECONF:
-			if (asoc->reconf_enable &&
-			    !asoc->peer.reconf_capable)
+			if (asoc->ep->reconf_enable)
 				asoc->peer.reconf_capable = 1;
 			break;
 		case SCTP_CID_FWD_TSN:
-			if (asoc->prsctp_enable && !asoc->peer.prsctp_capable)
+			if (asoc->ep->prsctp_enable)
 				asoc->peer.prsctp_capable = 1;
 			break;
 		case SCTP_CID_AUTH:
@@ -2028,8 +2027,8 @@ static void sctp_process_ext_param(struct sctp_association *asoc,
 				asoc->peer.asconf_capable = 1;
 			break;
 		case SCTP_CID_I_DATA:
-			if (sctp_sk(asoc->base.sk)->strm_interleave)
-				asoc->intl_enable = 1;
+			if (asoc->ep->intl_enable)
+				asoc->peer.intl_capable = 1;
 			break;
 		default:
 			break;
@@ -2637,7 +2636,7 @@ static int sctp_process_param(struct sctp_association *asoc,
 		break;
 
 	case SCTP_PARAM_FWD_TSN_SUPPORT:
-		if (asoc->prsctp_enable) {
+		if (asoc->ep->prsctp_enable) {
 			asoc->peer.prsctp_capable = 1;
 			break;
 		}

net/sctp/socket.c

@@ -1913,7 +1913,7 @@ static int sctp_sendmsg_to_asoc(struct sctp_association *asoc,
 		if (err)
 			goto err;
 
-		if (sp->strm_interleave) {
+		if (asoc->ep->intl_enable) {
 			timeo = sock_sndtimeo(sk, 0);
 			err = sctp_wait_for_connect(asoc, &timeo);
 			if (err) {
@@ -3581,7 +3581,7 @@ static int sctp_setsockopt_fragment_interleave(struct sock *sk,
 	sctp_sk(sk)->frag_interleave = !!val;
 
 	if (!sctp_sk(sk)->frag_interleave)
-		sctp_sk(sk)->strm_interleave = 0;
+		sctp_sk(sk)->ep->intl_enable = 0;
 
 	return 0;
 }
@@ -4226,10 +4226,7 @@ static int sctp_setsockopt_reconfig_supported(struct sock *sk,
 	    sctp_style(sk, UDP))
 		goto out;
 
-	if (asoc)
-		asoc->reconf_enable = !!params.assoc_value;
-	else
-		sctp_sk(sk)->ep->reconf_enable = !!params.assoc_value;
+	sctp_sk(sk)->ep->reconf_enable = !!params.assoc_value;
 
 	retval = 0;
 
@@ -4487,7 +4484,7 @@ static int sctp_setsockopt_interleaving_supported(struct sock *sk,
 		goto out;
 	}
 
-	sp->strm_interleave = !!params.assoc_value;
+	sp->ep->intl_enable = !!params.assoc_value;
 
 	retval = 0;
 
@@ -7328,7 +7325,7 @@ static int sctp_getsockopt_pr_supported(struct sock *sk, int len,
 		goto out;
 	}
 
-	params.assoc_value = asoc ? asoc->prsctp_enable
+	params.assoc_value = asoc ? asoc->peer.prsctp_capable
 				  : sctp_sk(sk)->ep->prsctp_enable;
 
 	if (put_user(len, optlen))
@@ -7536,7 +7533,7 @@ static int sctp_getsockopt_reconfig_supported(struct sock *sk, int len,
 		goto out;
 	}
 
-	params.assoc_value = asoc ? asoc->reconf_enable
+	params.assoc_value = asoc ? asoc->peer.reconf_capable
 				  : sctp_sk(sk)->ep->reconf_enable;
 
 	if (put_user(len, optlen))
@@ -7695,8 +7692,8 @@ static int sctp_getsockopt_interleaving_supported(struct sock *sk, int len,
 		goto out;
 	}
 
-	params.assoc_value = asoc ? asoc->intl_enable
-				  : sctp_sk(sk)->strm_interleave;
+	params.assoc_value = asoc ? asoc->peer.intl_capable
+				  : sctp_sk(sk)->ep->intl_enable;
 
 	if (put_user(len, optlen))
 		goto out;

net/sctp/stream_interleave.c

@@ -1358,6 +1358,6 @@ void sctp_stream_interleave_init(struct sctp_stream *stream)
 	struct sctp_association *asoc;
 
 	asoc = container_of(stream, struct sctp_association, stream);
-	stream->si = asoc->intl_enable ? &sctp_stream_interleave_1
-				       : &sctp_stream_interleave_0;
+	stream->si = asoc->peer.intl_capable ? &sctp_stream_interleave_1
+					     : &sctp_stream_interleave_0;
 }

net/sctp/stream_sched.c

@@ -228,7 +228,7 @@ int sctp_sched_get_value(struct sctp_association *asoc, __u16 sid,
 void sctp_sched_dequeue_done(struct sctp_outq *q, struct sctp_chunk *ch)
 {
 	if (!list_is_last(&ch->frag_list, &ch->msg->chunks) &&
-	    !q->asoc->intl_enable) {
+	    !q->asoc->peer.intl_capable) {
 		struct sctp_stream_out *sout;
 		__u16 sid;