X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=net%2Fsctp%2Fulpevent.c;h=b43f1f110f8738069c59f425bd9e40a8e81ecbee;hb=7524d7d6de5d5d3f081de8cf5479819fad339661;hp=661ea2dd78baa3f0cd282cc2bf3551a8390480d8;hpb=f697b677620d04d8c77841745727de85f7e948b1;p=linux-2.6

diff --git a/net/sctp/ulpevent.c b/net/sctp/ulpevent.c
index 661ea2dd78..b43f1f110f 100644
--- a/net/sctp/ulpevent.c
+++ b/net/sctp/ulpevent.c
@@ -1,4 +1,4 @@
-/* SCTP kernel reference Implementation
+/* SCTP kernel implementation
  * (C) Copyright IBM Corp. 2001, 2004
  * Copyright (c) 1999-2000 Cisco, Inc.
  * Copyright (c) 1999-2001 Motorola, Inc.
@@ -8,13 +8,14 @@
  *
  * These functions manipulate an sctp event.   The struct ulpevent is used
  * to carry notifications and data to the ULP (sockets).
- * The SCTP reference implementation is free software;
+ *
+ * This SCTP implementation is free software;
  * you can redistribute it and/or modify it under the terms of
  * the GNU General Public License as published by
  * the Free Software Foundation; either version 2, or (at your option)
  * any later version.
  *
- * The SCTP reference implementation is distributed in the hope that it
+ * This SCTP implementation is distributed in the hope that it
  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  *                 ************************
  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
@@ -141,11 +142,6 @@ struct sctp_ulpevent  *sctp_ulpevent_make_assoc_change(
 	 * an ABORT, so we need to include it in the sac_info.
 	 */
 	if (chunk) {
-		/* sctp_inqu_pop() has allready pulled off the chunk
-		 * header.  We need to put it back temporarily
-		 */
-		skb_push(chunk->skb, sizeof(sctp_chunkhdr_t));
-
 		/* Copy the chunk data to a new skb and reserve enough
 		 * head room to use as notification.
 		 */
@@ -155,9 +151,6 @@ struct sctp_ulpevent  *sctp_ulpevent_make_assoc_change(
 		if (!skb)
 			goto fail;
 
-		/* put back the chunk header now that we have a copy */
-		skb_pull(chunk->skb, sizeof(sctp_chunkhdr_t));
-
 		/* Embed the event fields inside the cloned skb.  */
 		event = sctp_skb2event(skb);
 		sctp_ulpevent_init(event, MSG_NOTIFICATION, skb->truesize);
@@ -168,7 +161,8 @@ struct sctp_ulpevent  *sctp_ulpevent_make_assoc_change(
 
 		/* Trim the buffer to the right length.  */
 		skb_trim(skb, sizeof(struct sctp_assoc_change) +
-			 ntohs(chunk->chunk_hdr->length));
+			 ntohs(chunk->chunk_hdr->length) -
+			 sizeof(sctp_chunkhdr_t));
 	} else {
 		event = sctp_ulpevent_new(sizeof(struct sctp_assoc_change),
 				  MSG_NOTIFICATION, gfp);
@@ -212,7 +206,7 @@ struct sctp_ulpevent  *sctp_ulpevent_make_assoc_change(
 	 * This field is the total length of the notification data, including
 	 * the notification header.
 	 */
-	sac->sac_length = sizeof(struct sctp_assoc_change);
+	sac->sac_length = skb->len;
 
 	/* Socket Extensions for SCTP
 	 * 5.3.1.1 SCTP_ASSOC_CHANGE
@@ -692,6 +686,24 @@ struct sctp_ulpevent *sctp_ulpevent_make_rcvmsg(struct sctp_association *asoc,
 	struct sctp_ulpevent *event = NULL;
 	struct sk_buff *skb;
 	size_t padding, len;
+	int rx_count;
+
+	/*
+	 * check to see if we need to make space for this
+	 * new skb, expand the rcvbuffer if needed, or drop
+	 * the frame
+	 */
+	if (asoc->ep->rcvbuf_policy)
+		rx_count = atomic_read(&asoc->rmem_alloc);
+	else
+		rx_count = atomic_read(&asoc->base.sk->sk_rmem_alloc);
+
+	if (rx_count >= asoc->base.sk->sk_rcvbuf) {
+
+		if ((asoc->base.sk->sk_userlocks & SOCK_RCVBUF_LOCK) ||
+		    (!sk_rmem_schedule(asoc->base.sk, chunk->skb->truesize)))
+			goto fail;
+	}
 
 	/* Clone the original skb, sharing the data.  */
 	skb = skb_clone(chunk->skb, gfp);
@@ -802,6 +814,43 @@ fail:
 	return NULL;
 }
 
+struct sctp_ulpevent *sctp_ulpevent_make_authkey(
+	const struct sctp_association *asoc, __u16 key_id,
+	__u32 indication, gfp_t gfp)
+{
+	struct sctp_ulpevent *event;
+	struct sctp_authkey_event *ak;
+	struct sk_buff *skb;
+
+	event = sctp_ulpevent_new(sizeof(struct sctp_authkey_event),
+				  MSG_NOTIFICATION, gfp);
+	if (!event)
+		goto fail;
+
+	skb = sctp_event2skb(event);
+	ak = (struct sctp_authkey_event *)
+		skb_put(skb, sizeof(struct sctp_authkey_event));
+
+	ak->auth_type = SCTP_AUTHENTICATION_INDICATION;
+	ak->auth_flags = 0;
+	ak->auth_length = sizeof(struct sctp_authkey_event);
+
+	ak->auth_keynumber = key_id;
+	ak->auth_altkeynumber = 0;
+	ak->auth_indication = indication;
+
+	/*
+	 * The association id field, holds the identifier for the association.
+	 */
+	sctp_ulpevent_set_owner(event, asoc);
+	ak->auth_assoc_id = sctp_assoc2id(asoc);
+
+	return event;
+fail:
+	return NULL;
+}
+
+
 /* Return the notification type, assuming this is a notification
  * event.
  */