#include <linux/rbtree.h>
#include <net/net_trackers.h>
#include <net/net_debug.h>
-#include <net/dropreason.h>
+#include <net/dropreason-core.h>
struct netpoll_info;
struct device;
#include <linux/netfilter/nf_conntrack_common.h>
#endif
#include <net/net_debug.h>
-#include <net/dropreason.h>
+#include <net/dropreason-core.h>
/**
* DOC: skb checksums
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef _LINUX_DROPREASON_CORE_H
+#define _LINUX_DROPREASON_CORE_H
+
+#define DEFINE_DROP_REASON(FN, FNe) \
+ FN(NOT_SPECIFIED) \
+ FN(NO_SOCKET) \
+ FN(PKT_TOO_SMALL) \
+ FN(TCP_CSUM) \
+ FN(SOCKET_FILTER) \
+ FN(UDP_CSUM) \
+ FN(NETFILTER_DROP) \
+ FN(OTHERHOST) \
+ FN(IP_CSUM) \
+ FN(IP_INHDR) \
+ FN(IP_RPFILTER) \
+ FN(UNICAST_IN_L2_MULTICAST) \
+ FN(XFRM_POLICY) \
+ FN(IP_NOPROTO) \
+ FN(SOCKET_RCVBUFF) \
+ FN(PROTO_MEM) \
+ FN(TCP_MD5NOTFOUND) \
+ FN(TCP_MD5UNEXPECTED) \
+ FN(TCP_MD5FAILURE) \
+ FN(SOCKET_BACKLOG) \
+ FN(TCP_FLAGS) \
+ FN(TCP_ZEROWINDOW) \
+ FN(TCP_OLD_DATA) \
+ FN(TCP_OVERWINDOW) \
+ FN(TCP_OFOMERGE) \
+ FN(TCP_RFC7323_PAWS) \
+ FN(TCP_INVALID_SEQUENCE) \
+ FN(TCP_RESET) \
+ FN(TCP_INVALID_SYN) \
+ FN(TCP_CLOSE) \
+ FN(TCP_FASTOPEN) \
+ FN(TCP_OLD_ACK) \
+ FN(TCP_TOO_OLD_ACK) \
+ FN(TCP_ACK_UNSENT_DATA) \
+ FN(TCP_OFO_QUEUE_PRUNE) \
+ FN(TCP_OFO_DROP) \
+ FN(IP_OUTNOROUTES) \
+ FN(BPF_CGROUP_EGRESS) \
+ FN(IPV6DISABLED) \
+ FN(NEIGH_CREATEFAIL) \
+ FN(NEIGH_FAILED) \
+ FN(NEIGH_QUEUEFULL) \
+ FN(NEIGH_DEAD) \
+ FN(TC_EGRESS) \
+ FN(QDISC_DROP) \
+ FN(CPU_BACKLOG) \
+ FN(XDP) \
+ FN(TC_INGRESS) \
+ FN(UNHANDLED_PROTO) \
+ FN(SKB_CSUM) \
+ FN(SKB_GSO_SEG) \
+ FN(SKB_UCOPY_FAULT) \
+ FN(DEV_HDR) \
+ FN(DEV_READY) \
+ FN(FULL_RING) \
+ FN(NOMEM) \
+ FN(HDR_TRUNC) \
+ FN(TAP_FILTER) \
+ FN(TAP_TXFILTER) \
+ FN(ICMP_CSUM) \
+ FN(INVALID_PROTO) \
+ FN(IP_INADDRERRORS) \
+ FN(IP_INNOROUTES) \
+ FN(PKT_TOO_BIG) \
+ FN(DUP_FRAG) \
+ FN(FRAG_REASM_TIMEOUT) \
+ FN(FRAG_TOO_FAR) \
+ FN(TCP_MINTTL) \
+ FN(IPV6_BAD_EXTHDR) \
+ FN(IPV6_NDISC_FRAG) \
+ FN(IPV6_NDISC_HOP_LIMIT) \
+ FN(IPV6_NDISC_BAD_CODE) \
+ FN(IPV6_NDISC_BAD_OPTIONS) \
+ FN(IPV6_NDISC_NS_OTHERHOST) \
+ FNe(MAX)
+
+/**
+ * enum skb_drop_reason - the reasons of skb drops
+ *
+ * The reason of skb drop, which is used in kfree_skb_reason().
+ */
+enum skb_drop_reason {
+ /**
+ * @SKB_NOT_DROPPED_YET: skb is not dropped yet (used for no-drop case)
+ */
+ SKB_NOT_DROPPED_YET = 0,
+ /** @SKB_CONSUMED: packet has been consumed */
+ SKB_CONSUMED,
+ /** @SKB_DROP_REASON_NOT_SPECIFIED: drop reason is not specified */
+ SKB_DROP_REASON_NOT_SPECIFIED,
+ /** @SKB_DROP_REASON_NO_SOCKET: socket not found */
+ SKB_DROP_REASON_NO_SOCKET,
+ /** @SKB_DROP_REASON_PKT_TOO_SMALL: packet size is too small */
+ SKB_DROP_REASON_PKT_TOO_SMALL,
+ /** @SKB_DROP_REASON_TCP_CSUM: TCP checksum error */
+ SKB_DROP_REASON_TCP_CSUM,
+ /** @SKB_DROP_REASON_SOCKET_FILTER: dropped by socket filter */
+ SKB_DROP_REASON_SOCKET_FILTER,
+ /** @SKB_DROP_REASON_UDP_CSUM: UDP checksum error */
+ SKB_DROP_REASON_UDP_CSUM,
+ /** @SKB_DROP_REASON_NETFILTER_DROP: dropped by netfilter */
+ SKB_DROP_REASON_NETFILTER_DROP,
+ /**
+ * @SKB_DROP_REASON_OTHERHOST: packet don't belong to current host
+ * (interface is in promisc mode)
+ */
+ SKB_DROP_REASON_OTHERHOST,
+ /** @SKB_DROP_REASON_IP_CSUM: IP checksum error */
+ SKB_DROP_REASON_IP_CSUM,
+ /**
+ * @SKB_DROP_REASON_IP_INHDR: there is something wrong with IP header (see
+ * IPSTATS_MIB_INHDRERRORS)
+ */
+ SKB_DROP_REASON_IP_INHDR,
+ /**
+ * @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_IP_RPFILTER,
+ /**
+ * @SKB_DROP_REASON_UNICAST_IN_L2_MULTICAST: destination address of L2 is
+ * multicast, but L3 is unicast.
+ */
+ SKB_DROP_REASON_UNICAST_IN_L2_MULTICAST,
+ /** @SKB_DROP_REASON_XFRM_POLICY: xfrm policy check failed */
+ SKB_DROP_REASON_XFRM_POLICY,
+ /** @SKB_DROP_REASON_IP_NOPROTO: no support for IP protocol */
+ SKB_DROP_REASON_IP_NOPROTO,
+ /** @SKB_DROP_REASON_SOCKET_RCVBUFF: socket receive buff is full */
+ SKB_DROP_REASON_SOCKET_RCVBUFF,
+ /**
+ * @SKB_DROP_REASON_PROTO_MEM: proto memory limition, such as udp packet
+ * drop out of udp_memory_allocated.
+ */
+ SKB_DROP_REASON_PROTO_MEM,
+ /**
+ * @SKB_DROP_REASON_TCP_MD5NOTFOUND: no MD5 hash and one expected,
+ * corresponding to LINUX_MIB_TCPMD5NOTFOUND
+ */
+ SKB_DROP_REASON_TCP_MD5NOTFOUND,
+ /**
+ * @SKB_DROP_REASON_TCP_MD5UNEXPECTED: MD5 hash and we're not expecting
+ * one, corresponding to LINUX_MIB_TCPMD5UNEXPECTED
+ */
+ SKB_DROP_REASON_TCP_MD5UNEXPECTED,
+ /**
+ * @SKB_DROP_REASON_TCP_MD5FAILURE: MD5 hash and its wrong, corresponding
+ * to LINUX_MIB_TCPMD5FAILURE
+ */
+ SKB_DROP_REASON_TCP_MD5FAILURE,
+ /**
+ * @SKB_DROP_REASON_SOCKET_BACKLOG: failed to add skb to socket backlog (
+ * see LINUX_MIB_TCPBACKLOGDROP)
+ */
+ SKB_DROP_REASON_SOCKET_BACKLOG,
+ /** @SKB_DROP_REASON_TCP_FLAGS: TCP flags invalid */
+ SKB_DROP_REASON_TCP_FLAGS,
+ /**
+ * @SKB_DROP_REASON_TCP_ZEROWINDOW: TCP receive window size is zero,
+ * see LINUX_MIB_TCPZEROWINDOWDROP
+ */
+ SKB_DROP_REASON_TCP_ZEROWINDOW,
+ /**
+ * @SKB_DROP_REASON_TCP_OLD_DATA: the TCP data reveived is already
+ * received before (spurious retrans may happened), see
+ * LINUX_MIB_DELAYEDACKLOST
+ */
+ SKB_DROP_REASON_TCP_OLD_DATA,
+ /**
+ * @SKB_DROP_REASON_TCP_OVERWINDOW: the TCP data is out of window,
+ * the seq of the first byte exceed the right edges of receive
+ * window
+ */
+ SKB_DROP_REASON_TCP_OVERWINDOW,
+ /**
+ * @SKB_DROP_REASON_TCP_OFOMERGE: the data of skb is already in the ofo
+ * queue, corresponding to LINUX_MIB_TCPOFOMERGE
+ */
+ SKB_DROP_REASON_TCP_OFOMERGE,
+ /**
+ * @SKB_DROP_REASON_TCP_RFC7323_PAWS: PAWS check, corresponding to
+ * LINUX_MIB_PAWSESTABREJECTED
+ */
+ SKB_DROP_REASON_TCP_RFC7323_PAWS,
+ /** @SKB_DROP_REASON_TCP_INVALID_SEQUENCE: Not acceptable SEQ field */
+ SKB_DROP_REASON_TCP_INVALID_SEQUENCE,
+ /** @SKB_DROP_REASON_TCP_RESET: Invalid RST packet */
+ SKB_DROP_REASON_TCP_RESET,
+ /**
+ * @SKB_DROP_REASON_TCP_INVALID_SYN: Incoming packet has unexpected
+ * SYN flag
+ */
+ SKB_DROP_REASON_TCP_INVALID_SYN,
+ /** @SKB_DROP_REASON_TCP_CLOSE: TCP socket in CLOSE state */
+ SKB_DROP_REASON_TCP_CLOSE,
+ /** @SKB_DROP_REASON_TCP_FASTOPEN: dropped by FASTOPEN request socket */
+ SKB_DROP_REASON_TCP_FASTOPEN,
+ /** @SKB_DROP_REASON_TCP_OLD_ACK: TCP ACK is old, but in window */
+ SKB_DROP_REASON_TCP_OLD_ACK,
+ /** @SKB_DROP_REASON_TCP_TOO_OLD_ACK: TCP ACK is too old */
+ SKB_DROP_REASON_TCP_TOO_OLD_ACK,
+ /**
+ * @SKB_DROP_REASON_TCP_ACK_UNSENT_DATA: TCP ACK for data we haven't
+ * sent yet
+ */
+ SKB_DROP_REASON_TCP_ACK_UNSENT_DATA,
+ /** @SKB_DROP_REASON_TCP_OFO_QUEUE_PRUNE: pruned from TCP OFO queue */
+ SKB_DROP_REASON_TCP_OFO_QUEUE_PRUNE,
+ /** @SKB_DROP_REASON_TCP_OFO_DROP: data already in receive queue */
+ SKB_DROP_REASON_TCP_OFO_DROP,
+ /** @SKB_DROP_REASON_IP_OUTNOROUTES: route lookup failed */
+ SKB_DROP_REASON_IP_OUTNOROUTES,
+ /**
+ * @SKB_DROP_REASON_BPF_CGROUP_EGRESS: dropped by BPF_PROG_TYPE_CGROUP_SKB
+ * eBPF program
+ */
+ SKB_DROP_REASON_BPF_CGROUP_EGRESS,
+ /** @SKB_DROP_REASON_IPV6DISABLED: IPv6 is disabled on the device */
+ SKB_DROP_REASON_IPV6DISABLED,
+ /** @SKB_DROP_REASON_NEIGH_CREATEFAIL: failed to create neigh entry */
+ SKB_DROP_REASON_NEIGH_CREATEFAIL,
+ /** @SKB_DROP_REASON_NEIGH_FAILED: neigh entry in failed state */
+ SKB_DROP_REASON_NEIGH_FAILED,
+ /** @SKB_DROP_REASON_NEIGH_QUEUEFULL: arp_queue for neigh entry is full */
+ SKB_DROP_REASON_NEIGH_QUEUEFULL,
+ /** @SKB_DROP_REASON_NEIGH_DEAD: neigh entry is dead */
+ SKB_DROP_REASON_NEIGH_DEAD,
+ /** @SKB_DROP_REASON_TC_EGRESS: dropped in TC egress HOOK */
+ SKB_DROP_REASON_TC_EGRESS,
+ /**
+ * @SKB_DROP_REASON_QDISC_DROP: dropped by qdisc when packet outputting (
+ * failed to enqueue to current qdisc)
+ */
+ SKB_DROP_REASON_QDISC_DROP,
+ /**
+ * @SKB_DROP_REASON_CPU_BACKLOG: failed to enqueue the skb to the per CPU
+ * backlog queue. This can be caused by backlog queue full (see
+ * netdev_max_backlog in net.rst) or RPS flow limit
+ */
+ SKB_DROP_REASON_CPU_BACKLOG,
+ /** @SKB_DROP_REASON_XDP: dropped by XDP in input path */
+ SKB_DROP_REASON_XDP,
+ /** @SKB_DROP_REASON_TC_INGRESS: dropped in TC ingress HOOK */
+ SKB_DROP_REASON_TC_INGRESS,
+ /** @SKB_DROP_REASON_UNHANDLED_PROTO: protocol not implemented or not supported */
+ SKB_DROP_REASON_UNHANDLED_PROTO,
+ /** @SKB_DROP_REASON_SKB_CSUM: sk_buff checksum computation error */
+ SKB_DROP_REASON_SKB_CSUM,
+ /** @SKB_DROP_REASON_SKB_GSO_SEG: gso segmentation error */
+ SKB_DROP_REASON_SKB_GSO_SEG,
+ /**
+ * @SKB_DROP_REASON_SKB_UCOPY_FAULT: failed to copy data from user space,
+ * e.g., via zerocopy_sg_from_iter() or skb_orphan_frags_rx()
+ */
+ SKB_DROP_REASON_SKB_UCOPY_FAULT,
+ /** @SKB_DROP_REASON_DEV_HDR: device driver specific header/metadata is invalid */
+ SKB_DROP_REASON_DEV_HDR,
+ /**
+ * @SKB_DROP_REASON_DEV_READY: the device is not ready to xmit/recv due to
+ * any of its data structure that is not up/ready/initialized,
+ * e.g., the IFF_UP is not set, or driver specific tun->tfiles[txq]
+ * is not initialized
+ */
+ SKB_DROP_REASON_DEV_READY,
+ /** @SKB_DROP_REASON_FULL_RING: ring buffer is full */
+ SKB_DROP_REASON_FULL_RING,
+ /** @SKB_DROP_REASON_NOMEM: error due to OOM */
+ SKB_DROP_REASON_NOMEM,
+ /**
+ * @SKB_DROP_REASON_HDR_TRUNC: failed to trunc/extract the header from
+ * networking data, e.g., failed to pull the protocol header from
+ * frags via pskb_may_pull()
+ */
+ SKB_DROP_REASON_HDR_TRUNC,
+ /**
+ * @SKB_DROP_REASON_TAP_FILTER: dropped by (ebpf) filter directly attached
+ * to tun/tap, e.g., via TUNSETFILTEREBPF
+ */
+ SKB_DROP_REASON_TAP_FILTER,
+ /**
+ * @SKB_DROP_REASON_TAP_TXFILTER: dropped by tx filter implemented at
+ * tun/tap, e.g., check_filter()
+ */
+ SKB_DROP_REASON_TAP_TXFILTER,
+ /** @SKB_DROP_REASON_ICMP_CSUM: ICMP checksum error */
+ SKB_DROP_REASON_ICMP_CSUM,
+ /**
+ * @SKB_DROP_REASON_INVALID_PROTO: the packet doesn't follow RFC 2211,
+ * such as a broadcasts ICMP_TIMESTAMP
+ */
+ SKB_DROP_REASON_INVALID_PROTO,
+ /**
+ * @SKB_DROP_REASON_IP_INADDRERRORS: host unreachable, corresponding to
+ * IPSTATS_MIB_INADDRERRORS
+ */
+ SKB_DROP_REASON_IP_INADDRERRORS,
+ /**
+ * @SKB_DROP_REASON_IP_INNOROUTES: network unreachable, corresponding to
+ * IPSTATS_MIB_INADDRERRORS
+ */
+ SKB_DROP_REASON_IP_INNOROUTES,
+ /**
+ * @SKB_DROP_REASON_PKT_TOO_BIG: packet size is too big (maybe exceed the
+ * MTU)
+ */
+ SKB_DROP_REASON_PKT_TOO_BIG,
+ /** @SKB_DROP_REASON_DUP_FRAG: duplicate fragment */
+ SKB_DROP_REASON_DUP_FRAG,
+ /** @SKB_DROP_REASON_FRAG_REASM_TIMEOUT: fragment reassembly timeout */
+ SKB_DROP_REASON_FRAG_REASM_TIMEOUT,
+ /**
+ * @SKB_DROP_REASON_FRAG_TOO_FAR: ipv4 fragment too far.
+ * (/proc/sys/net/ipv4/ipfrag_max_dist)
+ */
+ SKB_DROP_REASON_FRAG_TOO_FAR,
+ /**
+ * @SKB_DROP_REASON_TCP_MINTTL: ipv4 ttl or ipv6 hoplimit below
+ * the threshold (IP_MINTTL or IPV6_MINHOPCOUNT).
+ */
+ SKB_DROP_REASON_TCP_MINTTL,
+ /** @SKB_DROP_REASON_IPV6_BAD_EXTHDR: Bad IPv6 extension header. */
+ SKB_DROP_REASON_IPV6_BAD_EXTHDR,
+ /** @SKB_DROP_REASON_IPV6_NDISC_FRAG: invalid frag (suppress_frag_ndisc). */
+ SKB_DROP_REASON_IPV6_NDISC_FRAG,
+ /** @SKB_DROP_REASON_IPV6_NDISC_HOP_LIMIT: invalid hop limit. */
+ SKB_DROP_REASON_IPV6_NDISC_HOP_LIMIT,
+ /** @SKB_DROP_REASON_IPV6_NDISC_BAD_CODE: invalid NDISC icmp6 code. */
+ SKB_DROP_REASON_IPV6_NDISC_BAD_CODE,
+ /** @SKB_DROP_REASON_IPV6_NDISC_BAD_OPTIONS: invalid NDISC options. */
+ SKB_DROP_REASON_IPV6_NDISC_BAD_OPTIONS,
+ /**
+ * @SKB_DROP_REASON_IPV6_NDISC_NS_OTHERHOST: NEIGHBOUR SOLICITATION
+ * for another host.
+ */
+ SKB_DROP_REASON_IPV6_NDISC_NS_OTHERHOST,
+ /**
+ * @SKB_DROP_REASON_MAX: the maximum of drop reason, which shouldn't be
+ * used as a real 'reason'
+ */
+ SKB_DROP_REASON_MAX,
+};
+
+#define SKB_DR_INIT(name, reason) \
+ enum skb_drop_reason name = SKB_DROP_REASON_##reason
+#define SKB_DR(name) \
+ SKB_DR_INIT(name, NOT_SPECIFIED)
+#define SKB_DR_SET(name, reason) \
+ (name = SKB_DROP_REASON_##reason)
+#define SKB_DR_OR(name, reason) \
+ do { \
+ if (name == SKB_DROP_REASON_NOT_SPECIFIED || \
+ name == SKB_NOT_DROPPED_YET) \
+ SKB_DR_SET(name, reason); \
+ } while (0)
+
+extern const char * const drop_reasons[];
+
+#endif
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-
-#ifndef _LINUX_DROPREASON_H
-#define _LINUX_DROPREASON_H
-
-#define DEFINE_DROP_REASON(FN, FNe) \
- FN(NOT_SPECIFIED) \
- FN(NO_SOCKET) \
- FN(PKT_TOO_SMALL) \
- FN(TCP_CSUM) \
- FN(SOCKET_FILTER) \
- FN(UDP_CSUM) \
- FN(NETFILTER_DROP) \
- FN(OTHERHOST) \
- FN(IP_CSUM) \
- FN(IP_INHDR) \
- FN(IP_RPFILTER) \
- FN(UNICAST_IN_L2_MULTICAST) \
- FN(XFRM_POLICY) \
- FN(IP_NOPROTO) \
- FN(SOCKET_RCVBUFF) \
- FN(PROTO_MEM) \
- FN(TCP_MD5NOTFOUND) \
- FN(TCP_MD5UNEXPECTED) \
- FN(TCP_MD5FAILURE) \
- FN(SOCKET_BACKLOG) \
- FN(TCP_FLAGS) \
- FN(TCP_ZEROWINDOW) \
- FN(TCP_OLD_DATA) \
- FN(TCP_OVERWINDOW) \
- FN(TCP_OFOMERGE) \
- FN(TCP_RFC7323_PAWS) \
- FN(TCP_INVALID_SEQUENCE) \
- FN(TCP_RESET) \
- FN(TCP_INVALID_SYN) \
- FN(TCP_CLOSE) \
- FN(TCP_FASTOPEN) \
- FN(TCP_OLD_ACK) \
- FN(TCP_TOO_OLD_ACK) \
- FN(TCP_ACK_UNSENT_DATA) \
- FN(TCP_OFO_QUEUE_PRUNE) \
- FN(TCP_OFO_DROP) \
- FN(IP_OUTNOROUTES) \
- FN(BPF_CGROUP_EGRESS) \
- FN(IPV6DISABLED) \
- FN(NEIGH_CREATEFAIL) \
- FN(NEIGH_FAILED) \
- FN(NEIGH_QUEUEFULL) \
- FN(NEIGH_DEAD) \
- FN(TC_EGRESS) \
- FN(QDISC_DROP) \
- FN(CPU_BACKLOG) \
- FN(XDP) \
- FN(TC_INGRESS) \
- FN(UNHANDLED_PROTO) \
- FN(SKB_CSUM) \
- FN(SKB_GSO_SEG) \
- FN(SKB_UCOPY_FAULT) \
- FN(DEV_HDR) \
- FN(DEV_READY) \
- FN(FULL_RING) \
- FN(NOMEM) \
- FN(HDR_TRUNC) \
- FN(TAP_FILTER) \
- FN(TAP_TXFILTER) \
- FN(ICMP_CSUM) \
- FN(INVALID_PROTO) \
- FN(IP_INADDRERRORS) \
- FN(IP_INNOROUTES) \
- FN(PKT_TOO_BIG) \
- FN(DUP_FRAG) \
- FN(FRAG_REASM_TIMEOUT) \
- FN(FRAG_TOO_FAR) \
- FN(TCP_MINTTL) \
- FN(IPV6_BAD_EXTHDR) \
- FN(IPV6_NDISC_FRAG) \
- FN(IPV6_NDISC_HOP_LIMIT) \
- FN(IPV6_NDISC_BAD_CODE) \
- FN(IPV6_NDISC_BAD_OPTIONS) \
- FN(IPV6_NDISC_NS_OTHERHOST) \
- FNe(MAX)
-
-/**
- * enum skb_drop_reason - the reasons of skb drops
- *
- * The reason of skb drop, which is used in kfree_skb_reason().
- */
-enum skb_drop_reason {
- /**
- * @SKB_NOT_DROPPED_YET: skb is not dropped yet (used for no-drop case)
- */
- SKB_NOT_DROPPED_YET = 0,
- /** @SKB_CONSUMED: packet has been consumed */
- SKB_CONSUMED,
- /** @SKB_DROP_REASON_NOT_SPECIFIED: drop reason is not specified */
- SKB_DROP_REASON_NOT_SPECIFIED,
- /** @SKB_DROP_REASON_NO_SOCKET: socket not found */
- SKB_DROP_REASON_NO_SOCKET,
- /** @SKB_DROP_REASON_PKT_TOO_SMALL: packet size is too small */
- SKB_DROP_REASON_PKT_TOO_SMALL,
- /** @SKB_DROP_REASON_TCP_CSUM: TCP checksum error */
- SKB_DROP_REASON_TCP_CSUM,
- /** @SKB_DROP_REASON_SOCKET_FILTER: dropped by socket filter */
- SKB_DROP_REASON_SOCKET_FILTER,
- /** @SKB_DROP_REASON_UDP_CSUM: UDP checksum error */
- SKB_DROP_REASON_UDP_CSUM,
- /** @SKB_DROP_REASON_NETFILTER_DROP: dropped by netfilter */
- SKB_DROP_REASON_NETFILTER_DROP,
- /**
- * @SKB_DROP_REASON_OTHERHOST: packet don't belong to current host
- * (interface is in promisc mode)
- */
- SKB_DROP_REASON_OTHERHOST,
- /** @SKB_DROP_REASON_IP_CSUM: IP checksum error */
- SKB_DROP_REASON_IP_CSUM,
- /**
- * @SKB_DROP_REASON_IP_INHDR: there is something wrong with IP header (see
- * IPSTATS_MIB_INHDRERRORS)
- */
- SKB_DROP_REASON_IP_INHDR,
- /**
- * @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_IP_RPFILTER,
- /**
- * @SKB_DROP_REASON_UNICAST_IN_L2_MULTICAST: destination address of L2 is
- * multicast, but L3 is unicast.
- */
- SKB_DROP_REASON_UNICAST_IN_L2_MULTICAST,
- /** @SKB_DROP_REASON_XFRM_POLICY: xfrm policy check failed */
- SKB_DROP_REASON_XFRM_POLICY,
- /** @SKB_DROP_REASON_IP_NOPROTO: no support for IP protocol */
- SKB_DROP_REASON_IP_NOPROTO,
- /** @SKB_DROP_REASON_SOCKET_RCVBUFF: socket receive buff is full */
- SKB_DROP_REASON_SOCKET_RCVBUFF,
- /**
- * @SKB_DROP_REASON_PROTO_MEM: proto memory limition, such as udp packet
- * drop out of udp_memory_allocated.
- */
- SKB_DROP_REASON_PROTO_MEM,
- /**
- * @SKB_DROP_REASON_TCP_MD5NOTFOUND: no MD5 hash and one expected,
- * corresponding to LINUX_MIB_TCPMD5NOTFOUND
- */
- SKB_DROP_REASON_TCP_MD5NOTFOUND,
- /**
- * @SKB_DROP_REASON_TCP_MD5UNEXPECTED: MD5 hash and we're not expecting
- * one, corresponding to LINUX_MIB_TCPMD5UNEXPECTED
- */
- SKB_DROP_REASON_TCP_MD5UNEXPECTED,
- /**
- * @SKB_DROP_REASON_TCP_MD5FAILURE: MD5 hash and its wrong, corresponding
- * to LINUX_MIB_TCPMD5FAILURE
- */
- SKB_DROP_REASON_TCP_MD5FAILURE,
- /**
- * @SKB_DROP_REASON_SOCKET_BACKLOG: failed to add skb to socket backlog (
- * see LINUX_MIB_TCPBACKLOGDROP)
- */
- SKB_DROP_REASON_SOCKET_BACKLOG,
- /** @SKB_DROP_REASON_TCP_FLAGS: TCP flags invalid */
- SKB_DROP_REASON_TCP_FLAGS,
- /**
- * @SKB_DROP_REASON_TCP_ZEROWINDOW: TCP receive window size is zero,
- * see LINUX_MIB_TCPZEROWINDOWDROP
- */
- SKB_DROP_REASON_TCP_ZEROWINDOW,
- /**
- * @SKB_DROP_REASON_TCP_OLD_DATA: the TCP data reveived is already
- * received before (spurious retrans may happened), see
- * LINUX_MIB_DELAYEDACKLOST
- */
- SKB_DROP_REASON_TCP_OLD_DATA,
- /**
- * @SKB_DROP_REASON_TCP_OVERWINDOW: the TCP data is out of window,
- * the seq of the first byte exceed the right edges of receive
- * window
- */
- SKB_DROP_REASON_TCP_OVERWINDOW,
- /**
- * @SKB_DROP_REASON_TCP_OFOMERGE: the data of skb is already in the ofo
- * queue, corresponding to LINUX_MIB_TCPOFOMERGE
- */
- SKB_DROP_REASON_TCP_OFOMERGE,
- /**
- * @SKB_DROP_REASON_TCP_RFC7323_PAWS: PAWS check, corresponding to
- * LINUX_MIB_PAWSESTABREJECTED
- */
- SKB_DROP_REASON_TCP_RFC7323_PAWS,
- /** @SKB_DROP_REASON_TCP_INVALID_SEQUENCE: Not acceptable SEQ field */
- SKB_DROP_REASON_TCP_INVALID_SEQUENCE,
- /** @SKB_DROP_REASON_TCP_RESET: Invalid RST packet */
- SKB_DROP_REASON_TCP_RESET,
- /**
- * @SKB_DROP_REASON_TCP_INVALID_SYN: Incoming packet has unexpected
- * SYN flag
- */
- SKB_DROP_REASON_TCP_INVALID_SYN,
- /** @SKB_DROP_REASON_TCP_CLOSE: TCP socket in CLOSE state */
- SKB_DROP_REASON_TCP_CLOSE,
- /** @SKB_DROP_REASON_TCP_FASTOPEN: dropped by FASTOPEN request socket */
- SKB_DROP_REASON_TCP_FASTOPEN,
- /** @SKB_DROP_REASON_TCP_OLD_ACK: TCP ACK is old, but in window */
- SKB_DROP_REASON_TCP_OLD_ACK,
- /** @SKB_DROP_REASON_TCP_TOO_OLD_ACK: TCP ACK is too old */
- SKB_DROP_REASON_TCP_TOO_OLD_ACK,
- /**
- * @SKB_DROP_REASON_TCP_ACK_UNSENT_DATA: TCP ACK for data we haven't
- * sent yet
- */
- SKB_DROP_REASON_TCP_ACK_UNSENT_DATA,
- /** @SKB_DROP_REASON_TCP_OFO_QUEUE_PRUNE: pruned from TCP OFO queue */
- SKB_DROP_REASON_TCP_OFO_QUEUE_PRUNE,
- /** @SKB_DROP_REASON_TCP_OFO_DROP: data already in receive queue */
- SKB_DROP_REASON_TCP_OFO_DROP,
- /** @SKB_DROP_REASON_IP_OUTNOROUTES: route lookup failed */
- SKB_DROP_REASON_IP_OUTNOROUTES,
- /**
- * @SKB_DROP_REASON_BPF_CGROUP_EGRESS: dropped by BPF_PROG_TYPE_CGROUP_SKB
- * eBPF program
- */
- SKB_DROP_REASON_BPF_CGROUP_EGRESS,
- /** @SKB_DROP_REASON_IPV6DISABLED: IPv6 is disabled on the device */
- SKB_DROP_REASON_IPV6DISABLED,
- /** @SKB_DROP_REASON_NEIGH_CREATEFAIL: failed to create neigh entry */
- SKB_DROP_REASON_NEIGH_CREATEFAIL,
- /** @SKB_DROP_REASON_NEIGH_FAILED: neigh entry in failed state */
- SKB_DROP_REASON_NEIGH_FAILED,
- /** @SKB_DROP_REASON_NEIGH_QUEUEFULL: arp_queue for neigh entry is full */
- SKB_DROP_REASON_NEIGH_QUEUEFULL,
- /** @SKB_DROP_REASON_NEIGH_DEAD: neigh entry is dead */
- SKB_DROP_REASON_NEIGH_DEAD,
- /** @SKB_DROP_REASON_TC_EGRESS: dropped in TC egress HOOK */
- SKB_DROP_REASON_TC_EGRESS,
- /**
- * @SKB_DROP_REASON_QDISC_DROP: dropped by qdisc when packet outputting (
- * failed to enqueue to current qdisc)
- */
- SKB_DROP_REASON_QDISC_DROP,
- /**
- * @SKB_DROP_REASON_CPU_BACKLOG: failed to enqueue the skb to the per CPU
- * backlog queue. This can be caused by backlog queue full (see
- * netdev_max_backlog in net.rst) or RPS flow limit
- */
- SKB_DROP_REASON_CPU_BACKLOG,
- /** @SKB_DROP_REASON_XDP: dropped by XDP in input path */
- SKB_DROP_REASON_XDP,
- /** @SKB_DROP_REASON_TC_INGRESS: dropped in TC ingress HOOK */
- SKB_DROP_REASON_TC_INGRESS,
- /** @SKB_DROP_REASON_UNHANDLED_PROTO: protocol not implemented or not supported */
- SKB_DROP_REASON_UNHANDLED_PROTO,
- /** @SKB_DROP_REASON_SKB_CSUM: sk_buff checksum computation error */
- SKB_DROP_REASON_SKB_CSUM,
- /** @SKB_DROP_REASON_SKB_GSO_SEG: gso segmentation error */
- SKB_DROP_REASON_SKB_GSO_SEG,
- /**
- * @SKB_DROP_REASON_SKB_UCOPY_FAULT: failed to copy data from user space,
- * e.g., via zerocopy_sg_from_iter() or skb_orphan_frags_rx()
- */
- SKB_DROP_REASON_SKB_UCOPY_FAULT,
- /** @SKB_DROP_REASON_DEV_HDR: device driver specific header/metadata is invalid */
- SKB_DROP_REASON_DEV_HDR,
- /**
- * @SKB_DROP_REASON_DEV_READY: the device is not ready to xmit/recv due to
- * any of its data structure that is not up/ready/initialized,
- * e.g., the IFF_UP is not set, or driver specific tun->tfiles[txq]
- * is not initialized
- */
- SKB_DROP_REASON_DEV_READY,
- /** @SKB_DROP_REASON_FULL_RING: ring buffer is full */
- SKB_DROP_REASON_FULL_RING,
- /** @SKB_DROP_REASON_NOMEM: error due to OOM */
- SKB_DROP_REASON_NOMEM,
- /**
- * @SKB_DROP_REASON_HDR_TRUNC: failed to trunc/extract the header from
- * networking data, e.g., failed to pull the protocol header from
- * frags via pskb_may_pull()
- */
- SKB_DROP_REASON_HDR_TRUNC,
- /**
- * @SKB_DROP_REASON_TAP_FILTER: dropped by (ebpf) filter directly attached
- * to tun/tap, e.g., via TUNSETFILTEREBPF
- */
- SKB_DROP_REASON_TAP_FILTER,
- /**
- * @SKB_DROP_REASON_TAP_TXFILTER: dropped by tx filter implemented at
- * tun/tap, e.g., check_filter()
- */
- SKB_DROP_REASON_TAP_TXFILTER,
- /** @SKB_DROP_REASON_ICMP_CSUM: ICMP checksum error */
- SKB_DROP_REASON_ICMP_CSUM,
- /**
- * @SKB_DROP_REASON_INVALID_PROTO: the packet doesn't follow RFC 2211,
- * such as a broadcasts ICMP_TIMESTAMP
- */
- SKB_DROP_REASON_INVALID_PROTO,
- /**
- * @SKB_DROP_REASON_IP_INADDRERRORS: host unreachable, corresponding to
- * IPSTATS_MIB_INADDRERRORS
- */
- SKB_DROP_REASON_IP_INADDRERRORS,
- /**
- * @SKB_DROP_REASON_IP_INNOROUTES: network unreachable, corresponding to
- * IPSTATS_MIB_INADDRERRORS
- */
- SKB_DROP_REASON_IP_INNOROUTES,
- /**
- * @SKB_DROP_REASON_PKT_TOO_BIG: packet size is too big (maybe exceed the
- * MTU)
- */
- SKB_DROP_REASON_PKT_TOO_BIG,
- /** @SKB_DROP_REASON_DUP_FRAG: duplicate fragment */
- SKB_DROP_REASON_DUP_FRAG,
- /** @SKB_DROP_REASON_FRAG_REASM_TIMEOUT: fragment reassembly timeout */
- SKB_DROP_REASON_FRAG_REASM_TIMEOUT,
- /**
- * @SKB_DROP_REASON_FRAG_TOO_FAR: ipv4 fragment too far.
- * (/proc/sys/net/ipv4/ipfrag_max_dist)
- */
- SKB_DROP_REASON_FRAG_TOO_FAR,
- /**
- * @SKB_DROP_REASON_TCP_MINTTL: ipv4 ttl or ipv6 hoplimit below
- * the threshold (IP_MINTTL or IPV6_MINHOPCOUNT).
- */
- SKB_DROP_REASON_TCP_MINTTL,
- /** @SKB_DROP_REASON_IPV6_BAD_EXTHDR: Bad IPv6 extension header. */
- SKB_DROP_REASON_IPV6_BAD_EXTHDR,
- /** @SKB_DROP_REASON_IPV6_NDISC_FRAG: invalid frag (suppress_frag_ndisc). */
- SKB_DROP_REASON_IPV6_NDISC_FRAG,
- /** @SKB_DROP_REASON_IPV6_NDISC_HOP_LIMIT: invalid hop limit. */
- SKB_DROP_REASON_IPV6_NDISC_HOP_LIMIT,
- /** @SKB_DROP_REASON_IPV6_NDISC_BAD_CODE: invalid NDISC icmp6 code. */
- SKB_DROP_REASON_IPV6_NDISC_BAD_CODE,
- /** @SKB_DROP_REASON_IPV6_NDISC_BAD_OPTIONS: invalid NDISC options. */
- SKB_DROP_REASON_IPV6_NDISC_BAD_OPTIONS,
- /** @SKB_DROP_REASON_IPV6_NDISC_NS_OTHERHOST: NEIGHBOUR SOLICITATION
- * for another host.
- */
- SKB_DROP_REASON_IPV6_NDISC_NS_OTHERHOST,
- /**
- * @SKB_DROP_REASON_MAX: the maximum of drop reason, which shouldn't be
- * used as a real 'reason'
- */
- SKB_DROP_REASON_MAX,
-};
-
-#define SKB_DR_INIT(name, reason) \
- enum skb_drop_reason name = SKB_DROP_REASON_##reason
-#define SKB_DR(name) \
- SKB_DR_INIT(name, NOT_SPECIFIED)
-#define SKB_DR_SET(name, reason) \
- (name = SKB_DROP_REASON_##reason)
-#define SKB_DR_OR(name, reason) \
- do { \
- if (name == SKB_DROP_REASON_NOT_SPECIFIED || \
- name == SKB_NOT_DROPPED_YET) \
- SKB_DR_SET(name, reason); \
- } while (0)
-
-extern const char * const drop_reasons[];
-
-#endif
#include <linux/in6.h>
#include <linux/rbtree_types.h>
#include <linux/refcount.h>
-#include <net/dropreason.h>
+#include <net/dropreason-core.h>
/* Per netns frag queues directory */
struct fqdir {
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