Messages in this thread Patch in this message | | | From | menglong8.dong@gmail ... | Subject | [PATCH net-next 4/6] net: ipv4: use kfree_skb_reason() in ip_protocol_deliver_rcu() | Date | Mon, 24 Jan 2022 21:15:36 +0800 |
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From: Menglong Dong <imagedong@tencent.com>
Replace kfree_skb() with kfree_skb_reason() in ip_protocol_deliver_rcu(). Following new drop reasons are introduced:
SKB_DROP_REASON_XFRM_POLICY SKB_DROP_REASON_IP_NOPROTO
Signed-off-by: Menglong Dong <imagedong@tencent.com> --- include/linux/skbuff.h | 2 ++ include/trace/events/skb.h | 2 ++ net/ipv4/ip_input.c | 5 +++-- 3 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 8942d32c0657..603f77ef2170 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -328,6 +328,8 @@ enum skb_drop_reason { SKB_DROP_REASON_IP_RPFILTER, SKB_DROP_REASON_EARLY_DEMUX, SKB_DROP_REASON_UNICAST_IN_L2_MULTICAST, + SKB_DROP_REASON_XFRM_POLICY, + SKB_DROP_REASON_IP_NOPROTO, SKB_DROP_REASON_MAX, }; diff --git a/include/trace/events/skb.h b/include/trace/events/skb.h index 1dcdcc92cf08..e8369b8e8430 100644 --- a/include/trace/events/skb.h +++ b/include/trace/events/skb.h @@ -25,6 +25,8 @@ EM(SKB_DROP_REASON_EARLY_DEMUX, EARLY_DEMUX) \ EM(SKB_DROP_REASON_UNICAST_IN_L2_MULTICAST, \ UNICAST_IN_L2_MULTICAST) \ + EM(SKB_DROP_REASON_XFRM_POLICY, XFRM_POLICY) \ + EM(SKB_DROP_REASON_IP_NOPROTO, IP_NOPROTO) \ EMe(SKB_DROP_REASON_MAX, MAX) #undef EM diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c index a4afb367cf02..376c96cfd5d1 100644 --- a/net/ipv4/ip_input.c +++ b/net/ipv4/ip_input.c @@ -196,7 +196,8 @@ void ip_protocol_deliver_rcu(struct net *net, struct sk_buff *skb, int protocol) if (ipprot) { if (!ipprot->no_policy) { if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb)) { - kfree_skb(skb); + kfree_skb_reason(skb, + SKB_DROP_REASON_XFRM_POLICY); return; } nf_reset_ct(skb); @@ -215,7 +216,7 @@ void ip_protocol_deliver_rcu(struct net *net, struct sk_buff *skb, int protocol) icmp_send(skb, ICMP_DEST_UNREACH, ICMP_PROT_UNREACH, 0); } - kfree_skb(skb); + kfree_skb_reason(skb, SKB_DROP_REASON_IP_NOPROTO); } else { __IP_INC_STATS(net, IPSTATS_MIB_INDELIVERS); consume_skb(skb); -- 2.34.1
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