5 files changed, 14 insertions, 19 deletions

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index eae1f676f870..ef1528af7abf 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -465,8 +465,10 @@ int inet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
         if (addr_len < sizeof(struct sockaddr_in))
                 goto out;
 
-        if (addr->sin_family != AF_INET)
+        if (addr->sin_family != AF_INET) {
+                err = -EAFNOSUPPORT;
                 goto out;
+        }
 
         chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr);
 
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 4a7e16b5d3f3..84f26e8e6c60 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -828,7 +828,7 @@ static int __ip_append_data(struct sock *sk,
         cork->length += length;
         if (((length > mtu) || (skb && skb_is_gso(skb))) &&
             (sk->sk_protocol == IPPROTO_UDP) &&
-            (rt->dst.dev->features & NETIF_F_UFO)) {
+            (rt->dst.dev->features & NETIF_F_UFO) && !rt->dst.header_len) {
                 err = ip_ufo_append_data(sk, queue, getfrag, from, length,
                                          hh_len, fragheaderlen, transhdrlen,
                                          mtu, flags);
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 054a59d21eb0..46febcacb729 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -3220,7 +3220,7 @@ __setup("thash_entries=", set_thash_entries);
 void __init tcp_init(void)
 {
         struct sk_buff *skb = NULL;
-        unsigned long nr_pages, limit;
+        unsigned long limit;
         int i, max_share, cnt;
         unsigned long jiffy = jiffies;
 
@@ -3277,13 +3277,7 @@ void __init tcp_init(void)
         sysctl_tcp_max_orphans = cnt / 2;
         sysctl_max_syn_backlog = max(128, cnt / 256);
 
-        /* Set the pressure threshold to be a fraction of global memory that
-         * is up to 1/2 at 256 MB, decreasing toward zero with the amount of
-         * memory, with a floor of 128 pages.
-         */
-        nr_pages = totalram_pages - totalhigh_pages;
-        limit = min(nr_pages, 1UL<<(28-PAGE_SHIFT)) >> (20-PAGE_SHIFT);
-        limit = (limit * (nr_pages >> (20-PAGE_SHIFT))) >> (PAGE_SHIFT-11);
+        limit = nr_free_buffer_pages() / 8;
         limit = max(limit, 128UL);
         sysctl_tcp_mem[0] = limit / 4 * 3;
         sysctl_tcp_mem[1] = limit;
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 48cd88e62553..198f75b7bdd3 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -2209,16 +2209,10 @@ void __init udp_table_init(struct udp_table *table, const char *name)
 
 void __init udp_init(void)
 {
-        unsigned long nr_pages, limit;
+        unsigned long limit;
 
         udp_table_init(&udp_table, "UDP");
-        /* Set the pressure threshold up by the same strategy of TCP. It is a
-         * fraction of global memory that is up to 1/2 at 256 MB, decreasing
-         * toward zero with the amount of memory, with a floor of 128 pages.
-         */
-        nr_pages = totalram_pages - totalhigh_pages;
-        limit = min(nr_pages, 1UL<<(28-PAGE_SHIFT)) >> (20-PAGE_SHIFT);
-        limit = (limit * (nr_pages >> (20-PAGE_SHIFT))) >> (PAGE_SHIFT-11);
+        limit = nr_free_buffer_pages() / 8;
         limit = max(limit, 128UL);
         sysctl_udp_mem[0] = limit / 4 * 3;
         sysctl_udp_mem[1] = limit;
diff --git a/net/ipv4/xfrm4_output.c b/net/ipv4/xfrm4_output.c
index 2d51840e53a1..327a617d594c 100644
--- a/net/ipv4/xfrm4_output.c
+++ b/net/ipv4/xfrm4_output.c
@@ -32,7 +32,12 @@ static int xfrm4_tunnel_check_size(struct sk_buff *skb)
         dst = skb_dst(skb);
         mtu = dst_mtu(dst);
         if (skb->len > mtu) {
-                icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED, htonl(mtu));
+                if (skb->sk)
+                        ip_local_error(skb->sk, EMSGSIZE, ip_hdr(skb)->daddr,
+                                       inet_sk(skb->sk)->inet_dport, mtu);
+                else
+                        icmp_send(skb, ICMP_DEST_UNREACH,
+                                  ICMP_FRAG_NEEDED, htonl(mtu));
                 ret = -EMSGSIZE;
         }
 out: