^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #ifndef _NET_FLOW_DISSECTOR_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #define _NET_FLOW_DISSECTOR_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/in6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/siphash.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <uapi/linux/if_ether.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) struct bpf_prog;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) struct net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) struct sk_buff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * struct flow_dissector_key_control:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * @thoff: Transport header offset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) struct flow_dissector_key_control {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) u16 thoff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) u16 addr_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) u32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define FLOW_DIS_IS_FRAGMENT BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define FLOW_DIS_FIRST_FRAG BIT(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define FLOW_DIS_ENCAPSULATION BIT(2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) enum flow_dissect_ret {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) FLOW_DISSECT_RET_OUT_GOOD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) FLOW_DISSECT_RET_OUT_BAD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) FLOW_DISSECT_RET_PROTO_AGAIN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) FLOW_DISSECT_RET_IPPROTO_AGAIN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) FLOW_DISSECT_RET_CONTINUE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * struct flow_dissector_key_basic:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * @n_proto: Network header protocol (eg. IPv4/IPv6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * @ip_proto: Transport header protocol (eg. TCP/UDP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct flow_dissector_key_basic {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) __be16 n_proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) u8 ip_proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) u8 padding;
^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 flow_dissector_key_tags {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) u32 flow_label;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct flow_dissector_key_vlan {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) u16 vlan_id:12,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) vlan_dei:1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) vlan_priority:3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) __be16 vlan_tci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) __be16 vlan_tpid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) struct flow_dissector_mpls_lse {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) u32 mpls_ttl:8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) mpls_bos:1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) mpls_tc:3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) mpls_label:20;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #define FLOW_DIS_MPLS_MAX 7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) struct flow_dissector_key_mpls {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) struct flow_dissector_mpls_lse ls[FLOW_DIS_MPLS_MAX]; /* Label Stack */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) u8 used_lses; /* One bit set for each Label Stack Entry in use */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) static inline void dissector_set_mpls_lse(struct flow_dissector_key_mpls *mpls,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) int lse_index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) mpls->used_lses |= 1 << lse_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #define FLOW_DIS_TUN_OPTS_MAX 255
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * struct flow_dissector_key_enc_opts:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * @data: tunnel option data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * @len: length of tunnel option data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * @dst_opt_type: tunnel option type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) struct flow_dissector_key_enc_opts {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) u8 data[FLOW_DIS_TUN_OPTS_MAX]; /* Using IP_TUNNEL_OPTS_MAX is desired
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * here but seems difficult to #include
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) u8 len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) __be16 dst_opt_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) struct flow_dissector_key_keyid {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) __be32 keyid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * struct flow_dissector_key_ipv4_addrs:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * @src: source ip address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * @dst: destination ip address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct flow_dissector_key_ipv4_addrs {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) /* (src,dst) must be grouped, in the same way than in IP header */
^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) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * struct flow_dissector_key_ipv6_addrs:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * @src: source ip address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * @dst: destination ip address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct flow_dissector_key_ipv6_addrs {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) /* (src,dst) must be grouped, in the same way than in IP header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) struct in6_addr src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct in6_addr dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * struct flow_dissector_key_tipc:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * @key: source node address combined with selector
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) struct flow_dissector_key_tipc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) __be32 key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) * struct flow_dissector_key_addrs:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * @v4addrs: IPv4 addresses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * @v6addrs: IPv6 addresses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) struct flow_dissector_key_addrs {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) struct flow_dissector_key_ipv4_addrs v4addrs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) struct flow_dissector_key_ipv6_addrs v6addrs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) struct flow_dissector_key_tipc tipckey;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) * flow_dissector_key_arp:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) * @ports: Operation, source and target addresses for an ARP header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * for Ethernet hardware addresses and IPv4 protocol addresses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * sip: Sender IP address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * tip: Target IP address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * op: Operation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * sha: Sender hardware address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) * tpa: Target hardware address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) struct flow_dissector_key_arp {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) __u32 sip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) __u32 tip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) __u8 op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) unsigned char sha[ETH_ALEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) unsigned char tha[ETH_ALEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) };
^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) * flow_dissector_key_tp_ports:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) * @ports: port numbers of Transport header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * src: source port number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) * dst: destination port number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) struct flow_dissector_key_ports {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) __be32 ports;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) __be16 src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) __be16 dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) * flow_dissector_key_icmp:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) * type: ICMP type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) * code: ICMP code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * id: session identifier
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) struct flow_dissector_key_icmp {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) u8 type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) u8 code;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) u16 id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) * struct flow_dissector_key_eth_addrs:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * @src: source Ethernet address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * @dst: destination Ethernet address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) struct flow_dissector_key_eth_addrs {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) /* (dst,src) must be grouped, in the same way than in ETH header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) unsigned char dst[ETH_ALEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) unsigned char src[ETH_ALEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) * struct flow_dissector_key_tcp:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) * @flags: flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) struct flow_dissector_key_tcp {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) __be16 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) * struct flow_dissector_key_ip:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) * @tos: tos
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) * @ttl: ttl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) struct flow_dissector_key_ip {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) __u8 tos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) __u8 ttl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) * struct flow_dissector_key_meta:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) * @ingress_ifindex: ingress ifindex
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) * @ingress_iftype: ingress interface type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) struct flow_dissector_key_meta {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) int ingress_ifindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) u16 ingress_iftype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) * struct flow_dissector_key_ct:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) * @ct_state: conntrack state after converting with map
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) * @ct_mark: conttrack mark
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) * @ct_zone: conntrack zone
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) * @ct_labels: conntrack labels
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) struct flow_dissector_key_ct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) u16 ct_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) u16 ct_zone;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) u32 ct_mark;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) u32 ct_labels[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) };
^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) * struct flow_dissector_key_hash:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) * @hash: hash value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) struct flow_dissector_key_hash {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) u32 hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) enum flow_dissector_key_id {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) FLOW_DISSECTOR_KEY_CONTROL, /* struct flow_dissector_key_control */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) FLOW_DISSECTOR_KEY_BASIC, /* struct flow_dissector_key_basic */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) FLOW_DISSECTOR_KEY_IPV4_ADDRS, /* struct flow_dissector_key_ipv4_addrs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) FLOW_DISSECTOR_KEY_IPV6_ADDRS, /* struct flow_dissector_key_ipv6_addrs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) FLOW_DISSECTOR_KEY_PORTS, /* struct flow_dissector_key_ports */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) FLOW_DISSECTOR_KEY_PORTS_RANGE, /* struct flow_dissector_key_ports */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) FLOW_DISSECTOR_KEY_ICMP, /* struct flow_dissector_key_icmp */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) FLOW_DISSECTOR_KEY_ETH_ADDRS, /* struct flow_dissector_key_eth_addrs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) FLOW_DISSECTOR_KEY_TIPC, /* struct flow_dissector_key_tipc */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) FLOW_DISSECTOR_KEY_ARP, /* struct flow_dissector_key_arp */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) FLOW_DISSECTOR_KEY_VLAN, /* struct flow_dissector_key_vlan */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) FLOW_DISSECTOR_KEY_FLOW_LABEL, /* struct flow_dissector_key_tags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) FLOW_DISSECTOR_KEY_GRE_KEYID, /* struct flow_dissector_key_keyid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) FLOW_DISSECTOR_KEY_MPLS_ENTROPY, /* struct flow_dissector_key_keyid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) FLOW_DISSECTOR_KEY_ENC_KEYID, /* struct flow_dissector_key_keyid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, /* struct flow_dissector_key_ipv4_addrs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, /* struct flow_dissector_key_ipv6_addrs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) FLOW_DISSECTOR_KEY_ENC_CONTROL, /* struct flow_dissector_key_control */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) FLOW_DISSECTOR_KEY_ENC_PORTS, /* struct flow_dissector_key_ports */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) FLOW_DISSECTOR_KEY_MPLS, /* struct flow_dissector_key_mpls */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) FLOW_DISSECTOR_KEY_TCP, /* struct flow_dissector_key_tcp */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) FLOW_DISSECTOR_KEY_IP, /* struct flow_dissector_key_ip */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) FLOW_DISSECTOR_KEY_CVLAN, /* struct flow_dissector_key_vlan */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) FLOW_DISSECTOR_KEY_ENC_IP, /* struct flow_dissector_key_ip */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) FLOW_DISSECTOR_KEY_ENC_OPTS, /* struct flow_dissector_key_enc_opts */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) FLOW_DISSECTOR_KEY_META, /* struct flow_dissector_key_meta */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) FLOW_DISSECTOR_KEY_CT, /* struct flow_dissector_key_ct */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) FLOW_DISSECTOR_KEY_HASH, /* struct flow_dissector_key_hash */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) FLOW_DISSECTOR_KEY_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) #define FLOW_DISSECTOR_F_PARSE_1ST_FRAG BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) #define FLOW_DISSECTOR_F_STOP_AT_FLOW_LABEL BIT(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) #define FLOW_DISSECTOR_F_STOP_AT_ENCAP BIT(2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) struct flow_dissector_key {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) enum flow_dissector_key_id key_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) size_t offset; /* offset of struct flow_dissector_key_*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) in target the struct */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) struct flow_dissector {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) unsigned int used_keys; /* each bit repesents presence of one key id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) unsigned short int offset[FLOW_DISSECTOR_KEY_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) struct flow_keys_basic {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) struct flow_dissector_key_control control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) struct flow_dissector_key_basic basic;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) struct flow_keys {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) struct flow_dissector_key_control control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) #define FLOW_KEYS_HASH_START_FIELD basic
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) struct flow_dissector_key_basic basic __aligned(SIPHASH_ALIGNMENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) struct flow_dissector_key_tags tags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) struct flow_dissector_key_vlan vlan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) struct flow_dissector_key_vlan cvlan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) struct flow_dissector_key_keyid keyid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) struct flow_dissector_key_ports ports;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) struct flow_dissector_key_icmp icmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) /* 'addrs' must be the last member */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) struct flow_dissector_key_addrs addrs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) #define FLOW_KEYS_HASH_OFFSET \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) offsetof(struct flow_keys, FLOW_KEYS_HASH_START_FIELD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) __be32 flow_get_u32_src(const struct flow_keys *flow);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) __be32 flow_get_u32_dst(const struct flow_keys *flow);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) extern struct flow_dissector flow_keys_dissector;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) extern struct flow_dissector flow_keys_basic_dissector;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) /* struct flow_keys_digest:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) * This structure is used to hold a digest of the full flow keys. This is a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) * larger "hash" of a flow to allow definitively matching specific flows where
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) * the 32 bit skb->hash is not large enough. The size is limited to 16 bytes so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) * that it can be used in CB of skb (see sch_choke for an example).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) #define FLOW_KEYS_DIGEST_LEN 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) struct flow_keys_digest {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) u8 data[FLOW_KEYS_DIGEST_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) void make_flow_keys_digest(struct flow_keys_digest *digest,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) const struct flow_keys *flow);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) static inline bool flow_keys_have_l4(const struct flow_keys *keys)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) return (keys->ports.ports || keys->tags.flow_label);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) u32 flow_hash_from_keys(struct flow_keys *keys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) void skb_flow_get_icmp_tci(const struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) struct flow_dissector_key_icmp *key_icmp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) void *data, int thoff, int hlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) static inline bool dissector_uses_key(const struct flow_dissector *flow_dissector,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) enum flow_dissector_key_id key_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) return flow_dissector->used_keys & (1 << key_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) static inline void *skb_flow_dissector_target(struct flow_dissector *flow_dissector,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) enum flow_dissector_key_id key_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) void *target_container)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) return ((char *)target_container) + flow_dissector->offset[key_id];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) struct bpf_flow_dissector {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) struct bpf_flow_keys *flow_keys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) const struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) void *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) void *data_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) flow_dissector_init_keys(struct flow_dissector_key_control *key_control,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) struct flow_dissector_key_basic *key_basic)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) memset(key_control, 0, sizeof(*key_control));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) memset(key_basic, 0, sizeof(*key_basic));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) #ifdef CONFIG_BPF_SYSCALL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) int flow_dissector_bpf_prog_attach_check(struct net *net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) struct bpf_prog *prog);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) #endif /* CONFIG_BPF_SYSCALL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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