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-rw-r--r--include/linux/skbuff.h9
-rw-r--r--include/trace/events/skb.h5
-rw-r--r--net/ipv4/ip_output.c8
-rw-r--r--net/ipv6/ip6_output.c6
4 files changed, 21 insertions, 7 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 31be38078918..62b4bed1b7bc 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -380,6 +380,15 @@ enum skb_drop_reason {
* the ofo queue, corresponding to
* LINUX_MIB_TCPOFOMERGE
*/
+ SKB_DROP_REASON_IP_OUTNOROUTES, /* route lookup failed */
+ SKB_DROP_REASON_BPF_CGROUP_EGRESS, /* dropped by
+ * BPF_PROG_TYPE_CGROUP_SKB
+ * eBPF program
+ */
+ SKB_DROP_REASON_IPV6DISABLED, /* IPv6 is disabled on the device */
+ SKB_DROP_REASON_NEIGH_CREATEFAIL, /* failed to create neigh
+ * entry
+ */
SKB_DROP_REASON_MAX,
};
diff --git a/include/trace/events/skb.h b/include/trace/events/skb.h
index 2ab7193313aa..97f8097651da 100644
--- a/include/trace/events/skb.h
+++ b/include/trace/events/skb.h
@@ -37,6 +37,11 @@
EM(SKB_DROP_REASON_TCP_OLD_DATA, TCP_OLD_DATA) \
EM(SKB_DROP_REASON_TCP_OVERWINDOW, TCP_OVERWINDOW) \
EM(SKB_DROP_REASON_TCP_OFOMERGE, TCP_OFOMERGE) \
+ EM(SKB_DROP_REASON_IP_OUTNOROUTES, IP_OUTNOROUTES) \
+ EM(SKB_DROP_REASON_BPF_CGROUP_EGRESS, \
+ BPF_CGROUP_EGRESS) \
+ EM(SKB_DROP_REASON_IPV6DISABLED, IPV6DISABLED) \
+ EM(SKB_DROP_REASON_NEIGH_CREATEFAIL, NEIGH_CREATEFAIL) \
EMe(SKB_DROP_REASON_MAX, MAX)
#undef EM
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 2941de5da871..6df3545c891d 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -233,7 +233,7 @@ static int ip_finish_output2(struct net *net, struct sock *sk, struct sk_buff *s
net_dbg_ratelimited("%s: No header cache and no neighbour!\n",
__func__);
- kfree_skb(skb);
+ kfree_skb_reason(skb, SKB_DROP_REASON_NEIGH_CREATEFAIL);
return -EINVAL;
}
@@ -317,7 +317,7 @@ static int ip_finish_output(struct net *net, struct sock *sk, struct sk_buff *sk
case NET_XMIT_CN:
return __ip_finish_output(net, sk, skb) ? : ret;
default:
- kfree_skb(skb);
+ kfree_skb_reason(skb, SKB_DROP_REASON_BPF_CGROUP_EGRESS);
return ret;
}
}
@@ -337,7 +337,7 @@ static int ip_mc_finish_output(struct net *net, struct sock *sk,
case NET_XMIT_SUCCESS:
break;
default:
- kfree_skb(skb);
+ kfree_skb_reason(skb, SKB_DROP_REASON_BPF_CGROUP_EGRESS);
return ret;
}
@@ -536,7 +536,7 @@ packet_routed:
no_route:
rcu_read_unlock();
IP_INC_STATS(net, IPSTATS_MIB_OUTNOROUTES);
- kfree_skb(skb);
+ kfree_skb_reason(skb, SKB_DROP_REASON_IP_OUTNOROUTES);
return -EHOSTUNREACH;
}
EXPORT_SYMBOL(__ip_queue_xmit);
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index c5c10f798025..c5edc86b18bd 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -130,7 +130,7 @@ static int ip6_finish_output2(struct net *net, struct sock *sk, struct sk_buff *
rcu_read_unlock_bh();
IP6_INC_STATS(net, idev, IPSTATS_MIB_OUTNOROUTES);
- kfree_skb(skb);
+ kfree_skb_reason(skb, SKB_DROP_REASON_NEIGH_CREATEFAIL);
return -EINVAL;
}
@@ -202,7 +202,7 @@ static int ip6_finish_output(struct net *net, struct sock *sk, struct sk_buff *s
case NET_XMIT_CN:
return __ip6_finish_output(net, sk, skb) ? : ret;
default:
- kfree_skb(skb);
+ kfree_skb_reason(skb, SKB_DROP_REASON_BPF_CGROUP_EGRESS);
return ret;
}
}
@@ -217,7 +217,7 @@ int ip6_output(struct net *net, struct sock *sk, struct sk_buff *skb)
if (unlikely(idev->cnf.disable_ipv6)) {
IP6_INC_STATS(net, idev, IPSTATS_MIB_OUTDISCARDS);
- kfree_skb(skb);
+ kfree_skb_reason(skb, SKB_DROP_REASON_IPV6DISABLED);
return 0;
}