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authorDavid S. Miller <davem@davemloft.net>2013-06-06 02:56:43 +0400
committerDavid S. Miller <davem@davemloft.net>2013-06-06 03:37:30 +0400
commit6bc19fb82d4c05a9eee19d6d2aab2ce26e499ec2 (patch)
tree8b049ef383307f5dae91b5c9cf78dbfb9b74a4d1 /net/ipv6/udp_offload.c
parent11a164a04382d735230b01f4cc46ad78a7c4abf6 (diff)
parent4d3797d7e1861ac1af150a6189315786c5e1c820 (diff)
downloadlinux-6bc19fb82d4c05a9eee19d6d2aab2ce26e499ec2.tar.xz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Merge 'net' bug fixes into 'net-next' as we have patches that will build on top of them. This merge commit includes a change from Emil Goode (emilgoode@gmail.com) that fixes a warning that would have been introduced by this merge. Specifically it fixes the pingv6_ops method ipv6_chk_addr() to add a "const" to the "struct net_device *dev" argument and likewise update the dummy_ipv6_chk_addr() declaration. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/udp_offload.c')
-rw-r--r--net/ipv6/udp_offload.c20
1 files changed, 12 insertions, 8 deletions
diff --git a/net/ipv6/udp_offload.c b/net/ipv6/udp_offload.c
index 76d401a93c7a..5d1b8d7ac993 100644
--- a/net/ipv6/udp_offload.c
+++ b/net/ipv6/udp_offload.c
@@ -46,11 +46,12 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb,
unsigned int mss;
unsigned int unfrag_ip6hlen, unfrag_len;
struct frag_hdr *fptr;
- u8 *mac_start, *prevhdr;
+ u8 *packet_start, *prevhdr;
u8 nexthdr;
u8 frag_hdr_sz = sizeof(struct frag_hdr);
int offset;
__wsum csum;
+ int tnl_hlen;
mss = skb_shinfo(skb)->gso_size;
if (unlikely(skb->len <= mss))
@@ -84,9 +85,11 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb,
skb->ip_summed = CHECKSUM_NONE;
/* Check if there is enough headroom to insert fragment header. */
- if ((skb_mac_header(skb) < skb->head + frag_hdr_sz) &&
- pskb_expand_head(skb, frag_hdr_sz, 0, GFP_ATOMIC))
- goto out;
+ tnl_hlen = skb_tnl_header_len(skb);
+ if (skb_headroom(skb) < (tnl_hlen + frag_hdr_sz)) {
+ if (gso_pskb_expand_head(skb, tnl_hlen + frag_hdr_sz))
+ goto out;
+ }
/* Find the unfragmentable header and shift it left by frag_hdr_sz
* bytes to insert fragment header.
@@ -94,11 +97,12 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb,
unfrag_ip6hlen = ip6_find_1stfragopt(skb, &prevhdr);
nexthdr = *prevhdr;
*prevhdr = NEXTHDR_FRAGMENT;
- unfrag_len = skb_network_header(skb) - skb_mac_header(skb) +
- unfrag_ip6hlen;
- mac_start = skb_mac_header(skb);
- memmove(mac_start-frag_hdr_sz, mac_start, unfrag_len);
+ unfrag_len = (skb_network_header(skb) - skb_mac_header(skb)) +
+ unfrag_ip6hlen + tnl_hlen;
+ packet_start = (u8 *) skb->head + SKB_GSO_CB(skb)->mac_offset;
+ memmove(packet_start-frag_hdr_sz, packet_start, unfrag_len);
+ SKB_GSO_CB(skb)->mac_offset -= frag_hdr_sz;
skb->mac_header -= frag_hdr_sz;
skb->network_header -= frag_hdr_sz;