diff options
| author | Victor Nogueira <victor@mojatatu.com> | 2023-12-16 23:44:36 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-12-20 14:50:13 +0300 |
| commit | 4cf24dc8934074725042c0bd10b91f4d4b5269bb (patch) | |
| tree | f5058fd8f4481eb40272b1405fa2f0530fda3ec3 /net/sched | |
| parent | b6a3c6066afc2cb7b92f45c67ab0b12ded81cb11 (diff) | |
| download | linux-4cf24dc8934074725042c0bd10b91f4d4b5269bb.tar.xz | |
net: sched: Add initial TC error skb drop reasons
Continue expanding Daniel's patch by adding new skb drop reasons that
are idiosyncratic to TC.
More specifically:
- SKB_DROP_REASON_TC_COOKIE_ERROR: An error occurred whilst
processing a tc ext cookie.
- SKB_DROP_REASON_TC_CHAIN_NOTFOUND: tc chain lookup failed.
- SKB_DROP_REASON_TC_RECLASSIFY_LOOP: tc exceeded max reclassify loop
iterations
Signed-off-by: Victor Nogueira <victor@mojatatu.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched')
| -rw-r--r-- | net/sched/act_api.c | 3 | ||||
| -rw-r--r-- | net/sched/cls_api.c | 22 |
2 files changed, 16 insertions, 9 deletions
diff --git a/net/sched/act_api.c b/net/sched/act_api.c index db500aa9f841..a44c097a880d 100644 --- a/net/sched/act_api.c +++ b/net/sched/act_api.c @@ -1119,7 +1119,8 @@ repeat: } } else if (TC_ACT_EXT_CMP(ret, TC_ACT_GOTO_CHAIN)) { if (unlikely(!rcu_access_pointer(a->goto_chain))) { - tcf_set_drop_reason(skb, SKB_DROP_REASON_TC_ERROR); + tcf_set_drop_reason(skb, + SKB_DROP_REASON_TC_CHAIN_NOTFOUND); return TC_ACT_SHOT; } tcf_action_goto_chain_exec(a, res); diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c index 199406e4bcdd..8978cf5531d0 100644 --- a/net/sched/cls_api.c +++ b/net/sched/cls_api.c @@ -1681,13 +1681,15 @@ reclassify: */ if (unlikely(n->tp != tp || n->tp->chain != n->chain || !tp->ops->get_exts)) { - tcf_set_drop_reason(skb, SKB_DROP_REASON_TC_ERROR); + tcf_set_drop_reason(skb, + SKB_DROP_REASON_TC_COOKIE_ERROR); return TC_ACT_SHOT; } exts = tp->ops->get_exts(tp, n->handle); if (unlikely(!exts || n->exts != exts)) { - tcf_set_drop_reason(skb, SKB_DROP_REASON_TC_ERROR); + tcf_set_drop_reason(skb, + SKB_DROP_REASON_TC_COOKIE_ERROR); return TC_ACT_SHOT; } @@ -1716,7 +1718,8 @@ reclassify: } if (unlikely(n)) { - tcf_set_drop_reason(skb, SKB_DROP_REASON_TC_ERROR); + tcf_set_drop_reason(skb, + SKB_DROP_REASON_TC_COOKIE_ERROR); return TC_ACT_SHOT; } @@ -1728,7 +1731,8 @@ reset: tp->chain->block->index, tp->prio & 0xffff, ntohs(tp->protocol)); - tcf_set_drop_reason(skb, SKB_DROP_REASON_TC_ERROR); + tcf_set_drop_reason(skb, + SKB_DROP_REASON_TC_RECLASSIFY_LOOP); return TC_ACT_SHOT; } @@ -1766,7 +1770,8 @@ int tcf_classify(struct sk_buff *skb, n = tcf_exts_miss_cookie_lookup(ext->act_miss_cookie, &act_index); if (!n) { - tcf_set_drop_reason(skb, SKB_DROP_REASON_TC_ERROR); + tcf_set_drop_reason(skb, + SKB_DROP_REASON_TC_COOKIE_ERROR); return TC_ACT_SHOT; } @@ -1777,7 +1782,9 @@ int tcf_classify(struct sk_buff *skb, fchain = tcf_chain_lookup_rcu(block, chain); if (!fchain) { - tcf_set_drop_reason(skb, SKB_DROP_REASON_TC_ERROR); + tcf_set_drop_reason(skb, + SKB_DROP_REASON_TC_CHAIN_NOTFOUND); + return TC_ACT_SHOT; } @@ -1799,10 +1806,9 @@ int tcf_classify(struct sk_buff *skb, ext = tc_skb_ext_alloc(skb); if (WARN_ON_ONCE(!ext)) { - tcf_set_drop_reason(skb, SKB_DROP_REASON_TC_ERROR); + tcf_set_drop_reason(skb, SKB_DROP_REASON_NOMEM); return TC_ACT_SHOT; } - ext->chain = last_executed_chain; ext->mru = cb->mru; ext->post_ct = cb->post_ct; |