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authorLi Wei <lw@cn.fujitsu.com>2011-11-23 03:33:10 +0400
committerDavid S. Miller <davem@davemloft.net>2011-11-24 04:19:32 +0400
commitac8a48106be49c422575ddc7531b776f8eb49610 (patch)
treed770975ffc9cebfcbb2d3ad40b0601a8d1e77c32 /include/net/inet_sock.h
parent67c170a24fc6669f8f7c0864d75caadef0a8e5e6 (diff)
downloadlinux-ac8a48106be49c422575ddc7531b776f8eb49610.tar.xz
ipv4: Save nexthop address of LSRR/SSRR option to IPCB.
We can not update iph->daddr in ip_options_rcv_srr(), It is too early. When some exception ocurred later (eg. in ip_forward() when goto sr_failed) we need the ip header be identical to the original one as ICMP need it. Add a field 'nexthop' in struct ip_options to save nexthop of LSRR or SSRR option. Signed-off-by: Li Wei <lw@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/inet_sock.h')
-rw-r--r--include/net/inet_sock.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/net/inet_sock.h b/include/net/inet_sock.h
index b897d6e6d0a5..f941964a9931 100644
--- a/include/net/inet_sock.h
+++ b/include/net/inet_sock.h
@@ -31,6 +31,7 @@
/** struct ip_options - IP Options
*
* @faddr - Saved first hop address
+ * @nexthop - Saved nexthop address in LSRR and SSRR
* @is_data - Options in __data, rather than skb
* @is_strictroute - Strict source route
* @srr_is_hit - Packet destination addr was our one
@@ -41,6 +42,7 @@
*/
struct ip_options {
__be32 faddr;
+ __be32 nexthop;
unsigned char optlen;
unsigned char srr;
unsigned char rr;