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authorYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>2008-04-13 23:33:52 -0700
committerDavid S. Miller <davem@davemloft.net>2008-04-13 23:33:52 -0700
commit7cd636fe9ce5de0051c11283911baca4291868c8 (patch)
tree1e914ceedffbc982af0afe207e6d7243d4bf922f
parentb45e9189c058bfa495073951ff461ee0eea968be (diff)
[IPV6]: IPv6 extension header structures need to be packed.
struct ipv6_opt_hdr is the common structure for IPv6 extension headers, and it is common to increment the pointer to get the real content. On the other hand, since the structure consists only of 1-byte next-header field and 1-byte length field, size of that structure depends on architecture; 2 or 4. Add "packed" attribute to get 2. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/linux/ipv6.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index 4aaefc349a4..134c8e5cf07 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -53,7 +53,7 @@ struct ipv6_opt_hdr {
/*
* TLV encoded option data follows.
*/
-};
+} __attribute__ ((packed)); /* required for some archs */
#define ipv6_destopt_hdr ipv6_opt_hdr
#define ipv6_hopopt_hdr ipv6_opt_hdr