diff options
| author | Florian Westphal <fw@strlen.de> | 2019-09-26 20:37:05 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-09-27 20:40:19 +0200 |
| commit | 174e23810cd3183dc2ca3f5166ef965a55eaaf54 (patch) | |
| tree | a9ffbf41f4c75ccef3332330253b37e21a84104f /net | |
| parent | 6b3656a60f2067738d1a423328199720806f0c44 (diff) | |
| download | lwn-174e23810cd3183dc2ca3f5166ef965a55eaaf54.tar.gz lwn-174e23810cd3183dc2ca3f5166ef965a55eaaf54.zip | |
sk_buff: drop all skb extensions on free and skb scrubbing
Now that we have a 3rd extension, add a new helper that drops the
extension space and use it when we need to scrub an sk_buff.
At this time, scrubbing clears secpath and bridge netfilter data, but
retains the tc skb extension, after this patch all three get cleared.
NAPI reuse/free assumes we can only have a secpath attached to skb, but
it seems better to clear all extensions there as well.
v2: add unlikely hint (Eric Dumazet)
Fixes: 95a7233c452a ("net: openvswitch: Set OvS recirc_id from tc chain index")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/dev.c | 4 | ||||
| -rw-r--r-- | net/core/skbuff.c | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 71b18e80389f..bf3ed413abaf 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -5666,7 +5666,7 @@ EXPORT_SYMBOL(gro_find_complete_by_type); static void napi_skb_free_stolen_head(struct sk_buff *skb) { skb_dst_drop(skb); - secpath_reset(skb); + skb_ext_put(skb); kmem_cache_free(skbuff_head_cache, skb); } @@ -5733,7 +5733,7 @@ static void napi_reuse_skb(struct napi_struct *napi, struct sk_buff *skb) skb->encapsulation = 0; skb_shinfo(skb)->gso_type = 0; skb->truesize = SKB_TRUESIZE(skb_end_offset(skb)); - secpath_reset(skb); + skb_ext_reset(skb); napi->skb = skb; } diff --git a/net/core/skbuff.c b/net/core/skbuff.c index f12e8a050edb..01d65206f4fb 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -5119,7 +5119,7 @@ void skb_scrub_packet(struct sk_buff *skb, bool xnet) skb->skb_iif = 0; skb->ignore_df = 0; skb_dst_drop(skb); - secpath_reset(skb); + skb_ext_reset(skb); nf_reset(skb); nf_reset_trace(skb); |