Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/…

…davem/net-2.6

* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
  [NET]: Make skb_seq_read unmap the last fragment
  [NET]: Re-enable irqs before pushing pending DMA requests
  [TCP] tcp_read_sock: Allow recv_actor() return return negative error value.
  [PPP]: Fix osize too small errors when decoding mppe.
  [PPP]: Revert 606f585
  [TIPC]: Fix infinite loop in netlink handler
  [SKBUFF]: Fix incorrect config #ifdef around skb_copy_secmark
  [IPV4]: include sysctl.h from inetdevice.h
  [IPV6] NDISC: Fix thinko to control Router Preference support.
  [NETFILTER]: nfctnetlink: Don't allow to change helper
  [NETFILTER]: nf_conntrack_sip: add missing message types containing RTP info

drivers/net/ppp_generic.c

@@ -1708,7 +1708,18 @@ ppp_decompress_frame(struct ppp *ppp, struct sk_buff *skb)
 		goto err;
 
 	if (proto == PPP_COMP) {
-		ns = dev_alloc_skb(ppp->mru + PPP_HDRLEN);
+		int obuff_size;
+
+		switch(ppp->rcomp->compress_proto) {
+		case CI_MPPE:
+			obuff_size = ppp->mru + PPP_HDRLEN + 1;
+			break;
+		default:
+			obuff_size = ppp->mru + PPP_HDRLEN;
+			break;
+		}
+
+		ns = dev_alloc_skb(obuff_size);
 		if (ns == 0) {
 			printk(KERN_ERR "ppp_decompress_frame: no memory\n");
 			goto err;

drivers/net/ppp_mppe.c

@@ -493,14 +493,14 @@ mppe_decompress(void *arg, unsigned char *ibuf, int isize, unsigned char *obuf,
 
 	/*
 	 * Make sure we have enough room to decrypt the packet.
-	 * To account for possible PFC we should only subtract 1
-	 * byte whereas in mppe_compress() we added 2 bytes (+MPPE_OVHD);
-	 * However, we assume no PFC, thus subtracting 2 bytes.
+	 * Note that for our test we only subtract 1 byte whereas in
+	 * mppe_compress() we added 2 bytes (+MPPE_OVHD);
+	 * this is to account for possible PFC.
 	 */
-	if (osize < isize - MPPE_OVHD - 2) {
+	if (osize < isize - MPPE_OVHD - 1) {
 		printk(KERN_DEBUG "mppe_decompress[%d]: osize too small! "
 		       "(have: %d need: %d)\n", state->unit,
-		       osize, isize - MPPE_OVHD - 2);
+		       osize, isize - MPPE_OVHD - 1);
 		return DECOMP_ERROR;
 	}
 	osize = isize - MPPE_OVHD - 2;	/* assume no PFC */

include/linux/inetdevice.h

@@ -8,6 +8,7 @@
 #include <linux/netdevice.h>
 #include <linux/rcupdate.h>
 #include <linux/timer.h>
+#include <linux/sysctl.h>
 
 struct ipv4_devconf
 {

net/core/dev.c

@@ -2009,6 +2009,7 @@ static void net_rx_action(struct softirq_action *h)
 		}
 	}
 out:
+	local_irq_enable();
 #ifdef CONFIG_NET_DMA
 	/*
 	 * There may not be any more sk_buffs coming right now, so push
@@ -2022,7 +2023,6 @@ static void net_rx_action(struct softirq_action *h)
 		rcu_read_unlock();
 	}
 #endif
-	local_irq_enable();
 	return;
 
 softnet_break:

net/core/skbuff.c

@@ -434,8 +434,8 @@ struct sk_buff *skb_clone(struct sk_buff *skb, gfp_t gfp_mask)
 	n->tc_verd = CLR_TC_MUNGED(n->tc_verd);
 	C(iif);
 #endif
-	skb_copy_secmark(n, skb);
 #endif
+	skb_copy_secmark(n, skb);
 	C(truesize);
 	atomic_set(&n->users, 1);
 	C(head);
@@ -1706,6 +1706,11 @@ unsigned int skb_seq_read(unsigned int consumed, const u8 **data,
 		st->stepped_offset += frag->size;
 	}
 
+	if (st->frag_data) {
+		kunmap_skb_frag(st->frag_data);
+		st->frag_data = NULL;
+	}
+
 	if (st->cur_skb->next) {
 		st->cur_skb = st->cur_skb->next;
 		st->frag_idx = 0;

net/ipv4/tcp.c

@@ -1064,7 +1064,11 @@ int tcp_read_sock(struct sock *sk, read_descriptor_t *desc,
 					break;
 			}
 			used = recv_actor(desc, skb, offset, len);
-			if (used <= len) {
+			if (used < 0) {
+				if (!copied)
+					copied = used;
+				break;
+			} else if (used <= len) {
 				seq += used;
 				copied += used;
 				offset += used;
@@ -1086,7 +1090,7 @@ int tcp_read_sock(struct sock *sk, read_descriptor_t *desc,
 	tcp_rcv_space_adjust(sk);
 
 	/* Clean up data we have read: This will do ACK frames. */
-	if (copied)
+	if (copied > 0)
 		tcp_cleanup_rbuf(sk, copied);
 	return copied;
 }

net/ipv6/ndisc.c

@@ -1062,7 +1062,7 @@ static void ndisc_router_discovery(struct sk_buff *skb)
 	pref = ra_msg->icmph.icmp6_router_pref;
 	/* 10b is handled as if it were 00b (medium) */
 	if (pref == ICMPV6_ROUTER_PREF_INVALID ||
-	    in6_dev->cnf.accept_ra_rtr_pref)
+	    !in6_dev->cnf.accept_ra_rtr_pref)
 		pref = ICMPV6_ROUTER_PREF_MEDIUM;
 #endif
 

net/netfilter/nf_conntrack_netlink.c

@@ -869,8 +869,7 @@ ctnetlink_change_helper(struct nf_conn *ct, struct nfattr *cda[])
 		return 0;
 
 	if (help->helper)
-		/* we had a helper before ... */
-		nf_ct_remove_expectations(ct);
+		return -EBUSY;
 
 	/* need to zero data of old helper */
 	memset(&help->help, 0, sizeof(help->help));

net/netfilter/nf_conntrack_sip.c

@@ -442,6 +442,9 @@ static int sip_help(struct sk_buff **pskb,
 
 	/* RTP info only in some SDP pkts */
 	if (memcmp(dptr, "INVITE", sizeof("INVITE") - 1) != 0 &&
+	    memcmp(dptr, "UPDATE", sizeof("UPDATE") - 1) != 0 &&
+	    memcmp(dptr, "SIP/2.0 180", sizeof("SIP/2.0 180") - 1) != 0 &&
+	    memcmp(dptr, "SIP/2.0 183", sizeof("SIP/2.0 183") - 1) != 0 &&
 	    memcmp(dptr, "SIP/2.0 200", sizeof("SIP/2.0 200") - 1) != 0) {
 		goto out;
 	}

net/tipc/netlink.c

@@ -60,7 +60,7 @@ static int handle_cmd(struct sk_buff *skb, struct genl_info *info)
 		rep_nlh = nlmsg_hdr(rep_buf);
 		memcpy(rep_nlh, req_nlh, hdr_space);
 		rep_nlh->nlmsg_len = rep_buf->len;
-		genlmsg_unicast(rep_buf, req_nlh->nlmsg_pid);
+		genlmsg_unicast(rep_buf, NETLINK_CB(skb).pid);
 	}
 
 	return 0;