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rps: Infrastructure in __skb_get_rxhash for deep inspection

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Basics for looking for ports in encapsulated packets in tunnels.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tom Herbert
2011-08-14 19:46:12 +00:00
committed by David S. Miller
parent bdeab99191
commit e971b7225b
1 changed files with 7 additions and 0 deletions
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7
net/core/dev.c
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@@ -133,6 +133,7 @@
#include <linux/pci.h> #include <linux/pci.h>
#include <linux/inetdevice.h> #include <linux/inetdevice.h>
#include <linux/cpu_rmap.h> #include <linux/cpu_rmap.h>
#include <linux/if_tunnel.h>
#include "net-sysfs.h" #include "net-sysfs.h"
@@ -2539,6 +2540,7 @@ void __skb_get_rxhash(struct sk_buff *skb)
nhoff = skb_network_offset(skb); nhoff = skb_network_offset(skb);
proto = skb->protocol; proto = skb->protocol;
again:
switch (proto) { switch (proto) {
case __constant_htons(ETH_P_IP): case __constant_htons(ETH_P_IP):
if (!pskb_may_pull(skb, sizeof(*ip) + nhoff)) if (!pskb_may_pull(skb, sizeof(*ip) + nhoff))
@@ -2567,6 +2569,11 @@ void __skb_get_rxhash(struct sk_buff *skb)
goto done; goto done;
} }
switch (ip_proto) {
default:
break;
}
ports.v32 = 0; ports.v32 = 0;
poff = proto_ports_offset(ip_proto); poff = proto_ports_offset(ip_proto);
if (poff >= 0) { if (poff >= 0) {