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authorPatrick McHardy <kaber@trash.net>2007-04-05 22:54:39 (GMT)
committerDavid S. Miller <davem@davemloft.net>2007-04-05 22:54:39 (GMT)
commit04fef9893a1fa5d429522e09bc9591736408f2e8 (patch)
treed997599873920aef8970ce625c8f9d1184d2600e /net/ipv4/xfrm4_mode_beet.c
parentc5027c9a896fbe05367fb893a274deca5114bfd0 (diff)
downloadlinux-04fef9893a1fa5d429522e09bc9591736408f2e8.tar.xz
[XFRM]: beet: use IPOPT_NOP for option padding
draft-nikander-esp-beet-mode-07.txt states "The padding MUST be filled with NOP options as defined in Internet Protocol [1] section 3.1 Internet header format.", so do that. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/xfrm4_mode_beet.c')
-rw-r--r--net/ipv4/xfrm4_mode_beet.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv4/xfrm4_mode_beet.c b/net/ipv4/xfrm4_mode_beet.c
index 16efc66..f8544b7 100644
--- a/net/ipv4/xfrm4_mode_beet.c
+++ b/net/ipv4/xfrm4_mode_beet.c
@@ -54,6 +54,8 @@ static int xfrm4_beet_output(struct xfrm_state *x, struct sk_buff *skb)
ph->padlen = 4 - (optlen & 4);
ph->hdrlen = (optlen + ph->padlen + sizeof(*ph)) / 8;
ph->nexthdr = top_iph->protocol;
+ if (ph->padlen)
+ memset(ph + 1, IPOPT_NOP, ph->padlen);
top_iph->protocol = IPPROTO_BEETPH;
top_iph->ihl = sizeof(struct iphdr) / 4;