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pkt_sched: ingress socket filter by mark

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

Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
jamal 2009-10-19 02:17:56 +00:00 committed by David S. Miller
parent 7c734359d3
commit 7e75f93eda
2 changed files with 5 additions and 1 deletions
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3
include/linux/filter.h
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@ -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)

3
net/core/filter.c
View File

@ -303,6 +303,9 @@ load_b:
case SKF_AD_IFINDEX:
A = skb->dev->ifindex;
continue;
case SKF_AD_MARK:
A = skb->mark;
continue;
case SKF_AD_NLATTR: {
struct nlattr *nla;