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Commit 7e75f93e authored by jamal's avatar jamal Committed by David S. Miller
Browse files

pkt_sched: ingress socket filter by mark 



Allow bpf to set a filter to drop packets that dont
match a specific mark

Signed-off-by: default avatarJamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7c734359

include/linux/filter.h

+2 −1
Original line number Diff line number Diff line
@@ -123,7 +123,8 @@ struct sock_fprog /* Required for SO_ATTACH_FILTER. */ 
#define SKF_AD_IFINDEX 	8

#define SKF_AD_NLATTR	12

#define SKF_AD_NLATTR_NEST	16

#define SKF_AD_MAX	20

#define SKF_AD_MARK 	20

#define SKF_AD_MAX	24

#define SKF_NET_OFF   (-0x100000)

#define SKF_LL_OFF    (-0x200000)

net/core/filter.c

+3 −0
Original line number Diff line number Diff line
@@ -303,6 +303,9 @@ unsigned int sk_run_filter(struct sk_buff *skb, struct sock_filter *filter, int 
		case SKF_AD_IFINDEX:

			A = skb->dev->ifindex;

			continue;

		case SKF_AD_MARK:

			A = skb->mark;

			continue;

		case SKF_AD_NLATTR: {

			struct nlattr *nla;