^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (c) 2007-2017 Nicira, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #ifndef FLOW_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #define FLOW_H 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/cache.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/netlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/openvswitch.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/rcupdate.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/if_ether.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/in6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/jiffies.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/cpumask.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <net/inet_ecn.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <net/ip_tunnels.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <net/dst_metadata.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <net/nsh.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct sk_buff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) enum sw_flow_mac_proto {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) MAC_PROTO_NONE = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) MAC_PROTO_ETHERNET,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define SW_FLOW_KEY_INVALID 0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define MPLS_LABEL_DEPTH 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) /* Store options at the end of the array if they are less than the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * maximum size. This allows us to get the benefits of variable length
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * matching for small options.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define TUN_METADATA_OFFSET(opt_len) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) (sizeof_field(struct sw_flow_key, tun_opts) - opt_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define TUN_METADATA_OPTS(flow_key, opt_len) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) ((void *)((flow_key)->tun_opts + TUN_METADATA_OFFSET(opt_len)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) struct ovs_tunnel_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct metadata_dst *tun_dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct vlan_head {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) __be16 tpid; /* Vlan type. Generally 802.1q or 802.1ad.*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) __be16 tci; /* 0 if no VLAN, VLAN_CFI_MASK set otherwise. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define OVS_SW_FLOW_KEY_METADATA_SIZE \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) (offsetof(struct sw_flow_key, recirc_id) + \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) sizeof_field(struct sw_flow_key, recirc_id))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) struct ovs_key_nsh {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) struct ovs_nsh_key_base base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) __be32 context[NSH_MD1_CONTEXT_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) struct sw_flow_key {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) u8 tun_opts[IP_TUNNEL_OPTS_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) u8 tun_opts_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) struct ip_tunnel_key tun_key; /* Encapsulating tunnel key. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) u32 priority; /* Packet QoS priority. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) u32 skb_mark; /* SKB mark. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) u16 in_port; /* Input switch port (or DP_MAX_PORTS). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) } __packed phy; /* Safe when right after 'tun_key'. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) u8 mac_proto; /* MAC layer protocol (e.g. Ethernet). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) u8 tun_proto; /* Protocol of encapsulating tunnel. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) u32 ovs_flow_hash; /* Datapath computed hash value. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) u32 recirc_id; /* Recirculation ID. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) u8 src[ETH_ALEN]; /* Ethernet source address. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) u8 dst[ETH_ALEN]; /* Ethernet destination address. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) struct vlan_head vlan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) struct vlan_head cvlan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) __be16 type; /* Ethernet frame type. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) } eth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) /* Filling a hole of two bytes. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) u8 ct_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) u8 ct_orig_proto; /* CT original direction tuple IP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * protocol.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) u8 proto; /* IP protocol or lower 8 bits of ARP opcode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) u8 tos; /* IP ToS. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) u8 ttl; /* IP TTL/hop limit. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) u8 frag; /* One of OVS_FRAG_TYPE_*. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) } ip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) u16 ct_zone; /* Conntrack zone. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) __be16 src; /* TCP/UDP/SCTP source port. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) __be16 dst; /* TCP/UDP/SCTP destination port. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) __be16 flags; /* TCP flags. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) } tp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) __be32 src; /* IP source address. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) __be32 dst; /* IP destination address. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) } addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) __be32 src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) __be32 dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) } ct_orig; /* Conntrack original direction fields. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) u8 sha[ETH_ALEN]; /* ARP source hardware address. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) u8 tha[ETH_ALEN]; /* ARP target hardware address. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) } arp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) } ipv4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) struct in6_addr src; /* IPv6 source address. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct in6_addr dst; /* IPv6 destination address. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) } addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) __be32 label; /* IPv6 flow label. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) struct in6_addr src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) struct in6_addr dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) } ct_orig; /* Conntrack original direction fields. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct in6_addr target; /* ND target address. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) u8 sll[ETH_ALEN]; /* ND source link layer address. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) u8 tll[ETH_ALEN]; /* ND target link layer address. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) } nd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) } ipv6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) u32 num_labels_mask; /* labels present bitmap of effective length MPLS_LABEL_DEPTH */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) __be32 lse[MPLS_LABEL_DEPTH]; /* label stack entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) } mpls;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) struct ovs_key_nsh nsh; /* network service header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) /* Connection tracking fields not packed above. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) __be16 src; /* CT orig tuple tp src port. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) __be16 dst; /* CT orig tuple tp dst port. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) } orig_tp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) u32 mark;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) struct ovs_key_ct_labels labels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) } ct;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) } __aligned(BITS_PER_LONG/8); /* Ensure that we can do comparisons as longs. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) static inline bool sw_flow_key_is_nd(const struct sw_flow_key *key)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) return key->eth.type == htons(ETH_P_IPV6) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) key->ip.proto == NEXTHDR_ICMP &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) key->tp.dst == 0 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) (key->tp.src == htons(NDISC_NEIGHBOUR_SOLICITATION) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) key->tp.src == htons(NDISC_NEIGHBOUR_ADVERTISEMENT));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) struct sw_flow_key_range {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) unsigned short int start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) unsigned short int end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) struct sw_flow_mask {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) int ref_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) struct rcu_head rcu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) struct sw_flow_key_range range;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) struct sw_flow_key key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) struct sw_flow_match {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) struct sw_flow_key *key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) struct sw_flow_key_range range;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) struct sw_flow_mask *mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) #define MAX_UFID_LENGTH 16 /* 128 bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) struct sw_flow_id {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) u32 ufid_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) u32 ufid[MAX_UFID_LENGTH / 4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) struct sw_flow_key *unmasked_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) struct sw_flow_actions {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) struct rcu_head rcu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) size_t orig_len; /* From flow_cmd_new netlink actions size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) u32 actions_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) struct nlattr actions[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) struct sw_flow_stats {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) u64 packet_count; /* Number of packets matched. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) u64 byte_count; /* Number of bytes matched. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) unsigned long used; /* Last used time (in jiffies). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) spinlock_t lock; /* Lock for atomic stats update. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) __be16 tcp_flags; /* Union of seen TCP flags. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) struct sw_flow {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) struct rcu_head rcu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) struct hlist_node node[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) u32 hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) } flow_table, ufid_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) int stats_last_writer; /* CPU id of the last writer on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) * 'stats[0]'.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) struct sw_flow_key key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) struct sw_flow_id id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) struct cpumask cpu_used_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) struct sw_flow_mask *mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) struct sw_flow_actions __rcu *sf_acts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) struct sw_flow_stats __rcu *stats[]; /* One for each CPU. First one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) * is allocated at flow creation time,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) * the rest are allocated on demand
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) * while holding the 'stats[0].lock'.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) struct arp_eth_header {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) __be16 ar_hrd; /* format of hardware address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) __be16 ar_pro; /* format of protocol address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) unsigned char ar_hln; /* length of hardware address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) unsigned char ar_pln; /* length of protocol address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) __be16 ar_op; /* ARP opcode (command) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) /* Ethernet+IPv4 specific members. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) unsigned char ar_sip[4]; /* sender IP address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) unsigned char ar_tip[4]; /* target IP address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) static inline u8 ovs_key_mac_proto(const struct sw_flow_key *key)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) return key->mac_proto & ~SW_FLOW_KEY_INVALID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) static inline u16 __ovs_mac_header_len(u8 mac_proto)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) return mac_proto == MAC_PROTO_ETHERNET ? ETH_HLEN : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) static inline u16 ovs_mac_header_len(const struct sw_flow_key *key)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return __ovs_mac_header_len(ovs_key_mac_proto(key));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) static inline bool ovs_identifier_is_ufid(const struct sw_flow_id *sfid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) return sfid->ufid_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) static inline bool ovs_identifier_is_key(const struct sw_flow_id *sfid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) return !ovs_identifier_is_ufid(sfid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) void ovs_flow_stats_update(struct sw_flow *, __be16 tcp_flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) const struct sk_buff *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) void ovs_flow_stats_get(const struct sw_flow *, struct ovs_flow_stats *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) unsigned long *used, __be16 *tcp_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) void ovs_flow_stats_clear(struct sw_flow *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) u64 ovs_flow_used_time(unsigned long flow_jiffies);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) int ovs_flow_key_update(struct sk_buff *skb, struct sw_flow_key *key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) int ovs_flow_key_update_l3l4(struct sk_buff *skb, struct sw_flow_key *key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) int ovs_flow_key_extract(const struct ip_tunnel_info *tun_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) struct sw_flow_key *key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) /* Extract key from packet coming from userspace. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) int ovs_flow_key_extract_userspace(struct net *net, const struct nlattr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) struct sw_flow_key *key, bool log);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) #endif /* flow.h */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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