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Date: Mon, 16 May 2016 18:14:41 -0700 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Jarno Rajahalme <jrajahalme@...ira.com>, Simon Horman <simon.horman@...ronome.com>, "David S. Miller" <davem@...emloft.net> Subject: [PATCH 4.4 11/73] openvswitch: use flow protocol when recalculating ipv6 checksums 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Simon Horman <simon.horman@...ronome.com> [ Upstream commit b4f70527f052b0c00be4d7cac562baa75b212df5 ] When using masked actions the ipv6_proto field of an action to set IPv6 fields may be zero rather than the prevailing protocol which will result in skipping checksum recalculation. This patch resolves the problem by relying on the protocol in the flow key rather than that in the set field action. Fixes: 83d2b9ba1abc ("net: openvswitch: Support masked set actions.") Cc: Jarno Rajahalme <jrajahalme@...ira.com> Signed-off-by: Simon Horman <simon.horman@...ronome.com> Signed-off-by: David S. Miller <davem@...emloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- net/openvswitch/actions.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/net/openvswitch/actions.c +++ b/net/openvswitch/actions.c @@ -461,7 +461,7 @@ static int set_ipv6(struct sk_buff *skb, mask_ipv6_addr(saddr, key->ipv6_src, mask->ipv6_src, masked); if (unlikely(memcmp(saddr, masked, sizeof(masked)))) { - set_ipv6_addr(skb, key->ipv6_proto, saddr, masked, + set_ipv6_addr(skb, flow_key->ip.proto, saddr, masked, true); memcpy(&flow_key->ipv6.addr.src, masked, sizeof(flow_key->ipv6.addr.src)); @@ -483,7 +483,7 @@ static int set_ipv6(struct sk_buff *skb, NULL, &flags) != NEXTHDR_ROUTING); - set_ipv6_addr(skb, key->ipv6_proto, daddr, masked, + set_ipv6_addr(skb, flow_key->ip.proto, daddr, masked, recalc_csum); memcpy(&flow_key->ipv6.addr.dst, masked, sizeof(flow_key->ipv6.addr.dst));
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