diff options
| author | Jiri Pirko <jiri@resnulli.us> | 2015-01-13 19:13:43 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-01-14 01:51:08 +0300 |
| commit | d8b9605d2697c48fb822c821c5751afbb4567003 (patch) | |
| tree | e9c4cbcafae686743acae5cd834086735e31aa7a /include/net/pkt_sched.h | |
| parent | 8bdda5ddd1f1590ae24002749adb72693b80baaf (diff) | |
| download | linux-d8b9605d2697c48fb822c821c5751afbb4567003.tar.xz | |
net: sched: fix skb->protocol use in case of accelerated vlan path
tc code implicitly considers skb->protocol even in case of accelerated
vlan paths and expects vlan protocol type here. However, on rx path,
if the vlan header was already stripped, skb->protocol contains value
of next header. Similar situation is on tx path.
So for skbs that use skb->vlan_tci for tagging, use skb->vlan_proto instead.
Reported-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/pkt_sched.h')
| -rw-r--r-- | include/net/pkt_sched.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h index 27a33833ff4a..fe6e7aac3c56 100644 --- a/include/net/pkt_sched.h +++ b/include/net/pkt_sched.h @@ -3,6 +3,7 @@ #include <linux/jiffies.h> #include <linux/ktime.h> +#include <linux/if_vlan.h> #include <net/sch_generic.h> struct qdisc_walker { @@ -114,6 +115,17 @@ int tc_classify_compat(struct sk_buff *skb, const struct tcf_proto *tp, int tc_classify(struct sk_buff *skb, const struct tcf_proto *tp, struct tcf_result *res); +static inline __be16 tc_skb_protocol(const struct sk_buff *skb) +{ + /* We need to take extra care in case the skb came via + * vlan accelerated path. In that case, use skb->vlan_proto + * as the original vlan header was already stripped. + */ + if (vlan_tx_tag_present(skb)) + return skb->vlan_proto; + return skb->protocol; +} + /* Calculate maximal size of packet seen by hard_start_xmit routine of this device. */ |