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authorPaul Blakey <paulb@mellanox.com>2020-02-16 11:01:21 +0100
committerSaeed Mahameed <saeedm@mellanox.com>2020-02-20 02:49:48 +0100
commit9410c9409d3e3a1ee6a02a830f9b6ab678c456d1 (patch)
tree40d255675901e2c92324989ce74a74ee7b85d749 /include/net/pkt_cls.h
parenttc-testing: updated tdc tests for basic filter (diff)
downloadlinux-9410c9409d3e3a1ee6a02a830f9b6ab678c456d1.tar.xz
linux-9410c9409d3e3a1ee6a02a830f9b6ab678c456d1.zip
net: sched: Introduce ingress classification function
TC multi chain configuration can cause offloaded tc chains to miss in hardware after jumping to some chain. In such cases the software should continue from the chain that missed in hardware, as the hardware may have manipulated the packet and updated some counters. Currently a single tcf classification function serves both ingress and egress. However, multi chain miss processing (get tc skb extension on hw miss, set tc skb extension on tc miss) should happen only on ingress. Refactor the code to use ingress classification function, and move setting the tc skb extension from general classification to it, as a prestep for supporting the hw miss scenario. Co-developed-by: Vlad Buslov <vladbu@mellanox.com> Signed-off-by: Vlad Buslov <vladbu@mellanox.com> Signed-off-by: Paul Blakey <paulb@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'include/net/pkt_cls.h')
-rw-r--r--include/net/pkt_cls.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h
index 53946b509b51..109cbe3a0d51 100644
--- a/include/net/pkt_cls.h
+++ b/include/net/pkt_cls.h
@@ -72,6 +72,8 @@ static inline struct Qdisc *tcf_block_q(struct tcf_block *block)
int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp,
struct tcf_result *res, bool compat_mode);
+int tcf_classify_ingress(struct sk_buff *skb, const struct tcf_proto *tp,
+ struct tcf_result *res, bool compat_mode);
#else
static inline bool tcf_block_shared(struct tcf_block *block)
@@ -133,6 +135,14 @@ static inline int tcf_classify(struct sk_buff *skb, const struct tcf_proto *tp,
{
return TC_ACT_UNSPEC;
}
+
+static inline int tcf_classify_ingress(struct sk_buff *skb,
+ const struct tcf_proto *tp,
+ struct tcf_result *res, bool compat_mode)
+{
+ return TC_ACT_UNSPEC;
+}
+
#endif
static inline unsigned long