diff options
| -rw-r--r-- | net/core/skbuff.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 1c2b9ae7bce6..c57c806edba8 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -1507,9 +1507,20 @@ void napi_skb_free_stolen_head(struct sk_buff *skb) napi_skb_cache_put(skb); } +/** + * napi_consume_skb() - consume skb in NAPI context, try to feed skb cache + * @skb: buffer to free + * @budget: NAPI budget + * + * Non-zero @budget must come from the @budget argument passed by the core + * to a NAPI poll function. Note that core may pass budget of 0 to NAPI poll + * for example when polling for netpoll / netconsole. + * + * Passing @budget of 0 is safe from any context, it turns this function + * into dev_consume_skb_any(). + */ void napi_consume_skb(struct sk_buff *skb, int budget) { - /* Zero budget indicate non-NAPI context called us, like netpoll */ if (unlikely(!budget || !skb)) { dev_consume_skb_any(skb); return; |