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| author | Victor Nogueira <victor@mojatatu.com> | 2023-12-16 17:44:35 -0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-12-20 11:50:13 +0000 |
| commit | b6a3c6066afc2cb7b92f45c67ab0b12ded81cb11 (patch) | |
| tree | 6dd00a5baf30739183dd6e99509197cec21ca111 /include/net/sch_generic.h | |
| parent | fb2780721ca5e9f78bbe4544b819b929a982df9c (diff) | |
| download | linux-b6a3c6066afc2cb7b92f45c67ab0b12ded81cb11.tar.gz linux-b6a3c6066afc2cb7b92f45c67ab0b12ded81cb11.tar.bz2 linux-b6a3c6066afc2cb7b92f45c67ab0b12ded81cb11.zip | |
net: sched: Make tc-related drop reason more flexible for remaining qdiscs
Incrementing on Daniel's patch[1], make tc-related drop reason more
flexible for remaining qdiscs - that is, all qdiscs aside from clsact.
In essence, the drop reason will be set by cls_api and act_api in case
any error occurred in the data path. With that, we can give the user more
detailed information so that they can distinguish between a policy drop
or an error drop.
[1] https://lore.kernel.org/all/20231009092655.22025-1-daniel@iogearbox.net
Signed-off-by: Victor Nogueira <victor@mojatatu.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/sch_generic.h')
| -rw-r--r-- | include/net/sch_generic.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h index c499b56bb215..1d70c2c1572f 100644 --- a/include/net/sch_generic.h +++ b/include/net/sch_generic.h @@ -1036,6 +1036,37 @@ static inline struct sk_buff *qdisc_dequeue_head(struct Qdisc *sch) return skb; } +struct tc_skb_cb { + struct qdisc_skb_cb qdisc_cb; + u32 drop_reason; + + u16 zone; /* Only valid if post_ct = true */ + u16 mru; + u8 post_ct:1; + u8 post_ct_snat:1; + u8 post_ct_dnat:1; +}; + +static inline struct tc_skb_cb *tc_skb_cb(const struct sk_buff *skb) +{ + struct tc_skb_cb *cb = (struct tc_skb_cb *)skb->cb; + + BUILD_BUG_ON(sizeof(*cb) > sizeof_field(struct sk_buff, cb)); + return cb; +} + +static inline enum skb_drop_reason +tcf_get_drop_reason(const struct sk_buff *skb) +{ + return tc_skb_cb(skb)->drop_reason; +} + +static inline void tcf_set_drop_reason(const struct sk_buff *skb, + enum skb_drop_reason reason) +{ + tc_skb_cb(skb)->drop_reason = reason; +} + /* Instead of calling kfree_skb() while root qdisc lock is held, * queue the skb for future freeing at end of __dev_xmit_skb() */ |