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-rw-r--r--include/linux/skbuff.h38
1 files changed, 32 insertions, 6 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index a27bcc4f7e9a..a5adbf6b51e8 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -314,12 +314,38 @@ struct sk_buff;
* used to translate the reason to string.
*/
enum skb_drop_reason {
- SKB_DROP_REASON_NOT_SPECIFIED,
- SKB_DROP_REASON_NO_SOCKET,
- SKB_DROP_REASON_PKT_TOO_SMALL,
- SKB_DROP_REASON_TCP_CSUM,
- SKB_DROP_REASON_SOCKET_FILTER,
- SKB_DROP_REASON_UDP_CSUM,
+ SKB_DROP_REASON_NOT_SPECIFIED, /* drop reason is not specified */
+ SKB_DROP_REASON_NO_SOCKET, /* socket not found */
+ SKB_DROP_REASON_PKT_TOO_SMALL, /* packet size is too small */
+ SKB_DROP_REASON_TCP_CSUM, /* TCP checksum error */
+ SKB_DROP_REASON_SOCKET_FILTER, /* dropped by socket filter */
+ SKB_DROP_REASON_UDP_CSUM, /* UDP checksum error */
+ SKB_DROP_REASON_NETFILTER_DROP, /* dropped by netfilter */
+ SKB_DROP_REASON_OTHERHOST, /* packet don't belong to current
+ * host (interface is in promisc
+ * mode)
+ */
+ SKB_DROP_REASON_IP_CSUM, /* IP checksum error */
+ SKB_DROP_REASON_IP_INHDR, /* there is something wrong with
+ * IP header (see
+ * IPSTATS_MIB_INHDRERRORS)
+ */
+ SKB_DROP_REASON_IP_RPFILTER, /* IP rpfilter validate failed.
+ * see the document for rp_filter
+ * in ip-sysctl.rst for more
+ * information
+ */
+ SKB_DROP_REASON_UNICAST_IN_L2_MULTICAST, /* destination address of L2
+ * is multicast, but L3 is
+ * unicast.
+ */
+ SKB_DROP_REASON_XFRM_POLICY, /* xfrm policy check failed */
+ SKB_DROP_REASON_IP_NOPROTO, /* no support for IP protocol */
+ SKB_DROP_REASON_SOCKET_RCVBUFF, /* socket receive buff is full */
+ SKB_DROP_REASON_PROTO_MEM, /* proto memory limition, such as
+ * udp packet drop out of
+ * udp_memory_allocated.
+ */
SKB_DROP_REASON_MAX,
};