kernel/3.10: improve fq_codel hashing for 6in4 6to4 801.ad and IPIP cases
This is a backport of code to improve the quality of fq_codel hashing for 3.10 for some encapsulated protocols. Not needed in 3.11 and later. Patch-by: Dave Taht <dave.taht@bufferbloat.net> Patchwork: http://patchwork.openwrt.org/patch/4902/ Signed-off-by: Gabor Juhos <juhosg@openwrt.org> SVN-Revision: 39640
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3 changed files with 74 additions and 0 deletions
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From de03a7f8eddba389668e3c35d4a31d985d29778f Mon Sep 17 00:00:00 2001
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From: Tom Herbert <therbert@google.com>
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Date: Mon, 29 Jul 2013 11:07:36 -0700
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Subject: [PATCH 3/5] flow_dissector: clean up IPIP case
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Explicitly set proto to ETH_P_IP and jump directly to ip processing.
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Signed-off-by: Tom Herbert <therbert@google.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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net/core/flow_dissector.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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--- a/net/core/flow_dissector.c
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+++ b/net/core/flow_dissector.c
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@@ -139,7 +139,8 @@ ipv6:
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break;
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}
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case IPPROTO_IPIP:
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- goto again;
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+ proto = htons(ETH_P_IP);
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+ goto ip;
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default:
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break;
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}
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From 9c60237cd842c337539b1d72582b8cc410aeb3a6 Mon Sep 17 00:00:00 2001
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From: Tom Herbert <therbert@google.com>
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Date: Mon, 29 Jul 2013 11:07:42 -0700
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Subject: [PATCH 4/5] flow_dissector: add support for IPPROTO_IPV6
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Support IPPROTO_IPV6 similar to IPPROTO_IPIP
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Signed-off-by: Tom Herbert <therbert@google.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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net/core/flow_dissector.c | 3 +++
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1 file changed, 3 insertions(+)
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--- a/net/core/flow_dissector.c
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+++ b/net/core/flow_dissector.c
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@@ -141,6 +141,9 @@ ipv6:
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case IPPROTO_IPIP:
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proto = htons(ETH_P_IP);
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goto ip;
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+ case IPPROTO_IPV6:
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+ proto = htons(ETH_P_IPV6);
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+ goto ipv6;
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default:
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break;
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}
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From 017879b546ee5f85d13f90236a251d56605c9e86 Mon Sep 17 00:00:00 2001
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From: Eric Dumazet <edumazet@google.com>
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Date: Tue, 6 Aug 2013 04:35:06 -0700
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Subject: [PATCH 5/5] net: flow_dissector: add 802.1ad support
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Same behavior than 802.1q : finds the encapsulated protocol and
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skip 32bit header.
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Signed-off-by: Eric Dumazet <edumazet@google.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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net/core/flow_dissector.c | 1 +
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1 file changed, 1 insertion(+)
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--- a/net/core/flow_dissector.c
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+++ b/net/core/flow_dissector.c
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@@ -65,6 +65,7 @@ ipv6:
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nhoff += sizeof(struct ipv6hdr);
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break;
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}
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+ case __constant_htons(ETH_P_8021AD):
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case __constant_htons(ETH_P_8021Q): {
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const struct vlan_hdr *vlan;
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struct vlan_hdr _vlan;
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