Merge git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/alsa-fix-2.6

[linux-2.6-omap-h63xx.git] / net / sctp / ulpevent.c

diff --git a/net/sctp/ulpevent.c b/net/sctp/ulpevent.c
index bfecb353ab3da070f0b4784c6861eaef7de04d1c..b43f1f110f8738069c59f425bd9e40a8e81ecbee 100644 (file)
--- 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.
@@ -205,7 +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
@@ -685,6 +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);
@@ -795,6 +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.
  */