xfrmi: drop ignore_df check before updating pmtu
commit45a36a18d0
upstream. xfrm interfaces currently test for !skb->ignore_df when deciding whether to update the pmtu on the skb's dst. Because of this, no pmtu exception is created when we do something like: ping -s 1438 <dest> By dropping this check, the pmtu exception will be created and the next ping attempt will work. Fixes:f203b76d78
("xfrm: Add virtual xfrm interfaces") Reported-by: Xiumei Mu <xmu@redhat.com> Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -293,7 +293,7 @@ xfrmi_xmit2(struct sk_buff *skb, struct net_device *dev, struct flowi *fl)
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}
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mtu = dst_mtu(dst);
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mtu = dst_mtu(dst);
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if (!skb->ignore_df && skb->len > mtu) {
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if (skb->len > mtu) {
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skb_dst_update_pmtu_no_confirm(skb, mtu);
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skb_dst_update_pmtu_no_confirm(skb, mtu);
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if (skb->protocol == htons(ETH_P_IPV6)) {
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if (skb->protocol == htons(ETH_P_IPV6)) {
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