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openvswitch: Add basic MPLS support to kernel

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Allow datapath to recognize and extract MPLS labels into flow keys
and execute actions which push, pop, and set labels on packets.

Based heavily on work by Leo Alterman, Ravi K, Isaku Yamahata and Joe Stringer.

Cc: Ravi K <rkerur@gmail.com>
Cc: Leo Alterman <lalterman@nicira.com>
Cc: Isaku Yamahata <yamahata@valinux.co.jp>
Cc: Joe Stringer <joe@wand.net.nz>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
This commit is contained in:
Simon Horman 2014-10-06 05:05:13 -07:00 • committed by Pravin B Shelar
commit 25cd9ba0ab
10 changed files with 345 additions and 30 deletions
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3
net/core/dev.c
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@ -118,6 +118,7 @@
#include <linux/if_vlan.h>
#include <linux/ip.h>
#include <net/ip.h>
#include <net/mpls.h>
#include <linux/ipv6.h>
#include <linux/in.h>
#include <linux/jhash.h>
@ -2530,7 +2531,7 @@ static netdev_features_t net_mpls_features(struct sk_buff *skb,
netdev_features_t features,
__be16 type)
{
if (type == htons(ETH_P_MPLS_UC) || type == htons(ETH_P_MPLS_MC))
if (eth_p_mpls(type))
features &= skb->dev->mpls_features;
return features;