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| author | Eric Dumazet <edumazet@google.com> | 2022-10-29 15:45:16 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-10-31 20:14:26 -0700 |
| commit | 0e84afe8ebfbb9eade3f4f6de4720887bf908e26 (patch) | |
| tree | eb5dc52d4d2f25a53ab9de06b33e9729d871849a /net/core/skbuff.c | |
| parent | b98deb2f9803849fd0db714ea9f27aa18f3d9103 (diff) | |
| download | lwn-0e84afe8ebfbb9eade3f4f6de4720887bf908e26.tar.gz lwn-0e84afe8ebfbb9eade3f4f6de4720887bf908e26.zip | |
net: dropreason: add SKB_CONSUMED reason
This will allow to simply use in the future:
kfree_skb_reason(skb, reason);
Instead of repeating sequences like:
if (dropped)
kfree_skb_reason(skb, reason);
else
consume_skb(skb);
For instance, following patch in the series is adding
@reason to skb_release_data() and skb_release_all(),
so that we can propagate a meaningful @reason whenever
consume_skb()/kfree_skb() have to take care of a potential frag_list.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/core/skbuff.c')
| -rw-r--r-- | net/core/skbuff.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 1d84a17eada5..7ce797cd121f 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -94,6 +94,7 @@ EXPORT_SYMBOL(sysctl_max_skb_frags); #undef FN #define FN(reason) [SKB_DROP_REASON_##reason] = #reason, const char * const drop_reasons[] = { + [SKB_CONSUMED] = "CONSUMED", DEFINE_DROP_REASON(FN, FN) }; EXPORT_SYMBOL(drop_reasons); @@ -894,7 +895,10 @@ kfree_skb_reason(struct sk_buff *skb, enum skb_drop_reason reason) DEBUG_NET_WARN_ON_ONCE(reason <= 0 || reason >= SKB_DROP_REASON_MAX); - trace_kfree_skb(skb, __builtin_return_address(0), reason); + if (reason == SKB_CONSUMED) + trace_consume_skb(skb); + else + trace_kfree_skb(skb, __builtin_return_address(0), reason); __kfree_skb(skb); } EXPORT_SYMBOL(kfree_skb_reason); |