^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_VXLAN_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #define __NET_VXLAN_H 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/if_vlan.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <net/udp_tunnel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <net/dst_metadata.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <net/rtnetlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <net/switchdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <net/nexthop.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #define IANA_VXLAN_UDP_PORT 4789
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) /* VXLAN protocol (RFC 7348) header:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * |R|R|R|R|I|R|R|R| Reserved |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * | VXLAN Network Identifier (VNI) | Reserved |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * I = VXLAN Network Identifier (VNI) present.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) struct vxlanhdr {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) __be32 vx_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) __be32 vx_vni;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) /* VXLAN header flags. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define VXLAN_HF_VNI cpu_to_be32(BIT(27))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define VXLAN_N_VID (1u << 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define VXLAN_VID_MASK (VXLAN_N_VID - 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define VXLAN_VNI_MASK cpu_to_be32(VXLAN_VID_MASK << 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define VXLAN_HLEN (sizeof(struct udphdr) + sizeof(struct vxlanhdr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define VNI_HASH_BITS 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define VNI_HASH_SIZE (1<<VNI_HASH_BITS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define FDB_HASH_BITS 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define FDB_HASH_SIZE (1<<FDB_HASH_BITS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) /* Remote checksum offload for VXLAN (VXLAN_F_REMCSUM_[RT]X):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * |R|R|R|R|I|R|R|R|R|R|C| Reserved |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * | VXLAN Network Identifier (VNI) |O| Csum start |
^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) * C = Remote checksum offload bit. When set indicates that the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * remote checksum offload data is present.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * O = Offset bit. Indicates the checksum offset relative to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * checksum start.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * Csum start = Checksum start divided by two.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * http://tools.ietf.org/html/draft-herbert-vxlan-rco
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /* VXLAN-RCO header flags. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #define VXLAN_HF_RCO cpu_to_be32(BIT(21))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) /* Remote checksum offload header option */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define VXLAN_RCO_MASK cpu_to_be32(0x7f) /* Last byte of vni field */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define VXLAN_RCO_UDP cpu_to_be32(0x80) /* Indicate UDP RCO (TCP when not set *) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define VXLAN_RCO_SHIFT 1 /* Left shift of start */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #define VXLAN_RCO_SHIFT_MASK ((1 << VXLAN_RCO_SHIFT) - 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #define VXLAN_MAX_REMCSUM_START (0x7f << VXLAN_RCO_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * VXLAN Group Based Policy Extension (VXLAN_F_GBP):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * |G|R|R|R|I|R|R|R|R|D|R|R|A|R|R|R| Group Policy ID |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * | VXLAN Network Identifier (VNI) | Reserved |
^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) * G = Group Policy ID present.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * D = Don't Learn bit. When set, this bit indicates that the egress
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * VTEP MUST NOT learn the source address of the encapsulated frame.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * A = Indicates that the group policy has already been applied to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * this packet. Policies MUST NOT be applied by devices when the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * A bit is set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * https://tools.ietf.org/html/draft-smith-vxlan-group-policy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) struct vxlanhdr_gbp {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) u8 vx_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) #ifdef __LITTLE_ENDIAN_BITFIELD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) u8 reserved_flags1:3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) policy_applied:1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) reserved_flags2:2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) dont_learn:1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) reserved_flags3:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) #elif defined(__BIG_ENDIAN_BITFIELD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) u8 reserved_flags1:1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) dont_learn:1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) reserved_flags2:2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) policy_applied:1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) reserved_flags3:3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #error "Please fix <asm/byteorder.h>"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) __be16 policy_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) __be32 vx_vni;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) /* VXLAN-GBP header flags. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) #define VXLAN_HF_GBP cpu_to_be32(BIT(31))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) #define VXLAN_GBP_USED_BITS (VXLAN_HF_GBP | cpu_to_be32(0xFFFFFF))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) /* skb->mark mapping
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) * |R|R|R|R|R|R|R|R|R|D|R|R|A|R|R|R| Group Policy ID |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) #define VXLAN_GBP_DONT_LEARN (BIT(6) << 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) #define VXLAN_GBP_POLICY_APPLIED (BIT(3) << 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) #define VXLAN_GBP_ID_MASK (0xFFFF)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) #define VXLAN_GBP_MASK (VXLAN_GBP_DONT_LEARN | VXLAN_GBP_POLICY_APPLIED | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) VXLAN_GBP_ID_MASK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * VXLAN Generic Protocol Extension (VXLAN_F_GPE):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) * |R|R|Ver|I|P|R|O| Reserved |Next Protocol |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) * | VXLAN Network Identifier (VNI) | Reserved |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * Ver = Version. Indicates VXLAN GPE protocol version.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * P = Next Protocol Bit. The P bit is set to indicate that the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * Next Protocol field is present.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * O = OAM Flag Bit. The O bit is set to indicate that the packet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * is an OAM packet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) * Next Protocol = This 8 bit field indicates the protocol header
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) * immediately following the VXLAN GPE header.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) * https://tools.ietf.org/html/draft-ietf-nvo3-vxlan-gpe-01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) struct vxlanhdr_gpe {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) #if defined(__LITTLE_ENDIAN_BITFIELD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) u8 oam_flag:1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) reserved_flags1:1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) np_applied:1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) instance_applied:1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) version:2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) reserved_flags2:2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) #elif defined(__BIG_ENDIAN_BITFIELD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) u8 reserved_flags2:2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) version:2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) instance_applied:1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) np_applied:1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) reserved_flags1:1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) oam_flag:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) u8 reserved_flags3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) u8 reserved_flags4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) u8 next_protocol;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) __be32 vx_vni;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) /* VXLAN-GPE header flags. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) #define VXLAN_HF_VER cpu_to_be32(BIT(29) | BIT(28))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) #define VXLAN_HF_NP cpu_to_be32(BIT(26))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) #define VXLAN_HF_OAM cpu_to_be32(BIT(24))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) #define VXLAN_GPE_USED_BITS (VXLAN_HF_VER | VXLAN_HF_NP | VXLAN_HF_OAM | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) cpu_to_be32(0xff))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) struct vxlan_metadata {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) u32 gbp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) /* per UDP socket information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) struct vxlan_sock {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) struct hlist_node hlist;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) struct socket *sock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) struct hlist_head vni_list[VNI_HASH_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) refcount_t refcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) u32 flags;
^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) union vxlan_addr {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) struct sockaddr_in sin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) struct sockaddr_in6 sin6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) struct sockaddr sa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) struct vxlan_rdst {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) union vxlan_addr remote_ip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) __be16 remote_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) u8 offloaded:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) __be32 remote_vni;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) u32 remote_ifindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) struct net_device *remote_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) struct rcu_head rcu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) struct dst_cache dst_cache;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) struct vxlan_config {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) union vxlan_addr remote_ip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) union vxlan_addr saddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) __be32 vni;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) int remote_ifindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) int mtu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) __be16 dst_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) u16 port_min;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) u16 port_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) u8 tos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) u8 ttl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) __be32 label;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) u32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) unsigned long age_interval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) unsigned int addrmax;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) bool no_share;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) enum ifla_vxlan_df df;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) struct vxlan_dev_node {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) struct hlist_node hlist;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) struct vxlan_dev *vxlan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) /* Pseudo network device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) struct vxlan_dev {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) struct vxlan_dev_node hlist4; /* vni hash table for IPv4 socket */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) struct vxlan_dev_node hlist6; /* vni hash table for IPv6 socket */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) struct list_head next; /* vxlan's per namespace list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) struct vxlan_sock __rcu *vn4_sock; /* listening socket for IPv4 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) struct vxlan_sock __rcu *vn6_sock; /* listening socket for IPv6 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) struct net *net; /* netns for packet i/o */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) struct vxlan_rdst default_dst; /* default destination */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) struct timer_list age_timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) spinlock_t hash_lock[FDB_HASH_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) unsigned int addrcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) struct gro_cells gro_cells;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) struct vxlan_config cfg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) struct hlist_head fdb_head[FDB_HASH_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) #define VXLAN_F_LEARN 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) #define VXLAN_F_PROXY 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) #define VXLAN_F_RSC 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) #define VXLAN_F_L2MISS 0x08
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) #define VXLAN_F_L3MISS 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) #define VXLAN_F_IPV6 0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) #define VXLAN_F_UDP_ZERO_CSUM_TX 0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) #define VXLAN_F_UDP_ZERO_CSUM6_TX 0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) #define VXLAN_F_UDP_ZERO_CSUM6_RX 0x100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) #define VXLAN_F_REMCSUM_TX 0x200
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) #define VXLAN_F_REMCSUM_RX 0x400
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) #define VXLAN_F_GBP 0x800
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) #define VXLAN_F_REMCSUM_NOPARTIAL 0x1000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) #define VXLAN_F_COLLECT_METADATA 0x2000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) #define VXLAN_F_GPE 0x4000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) #define VXLAN_F_IPV6_LINKLOCAL 0x8000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) #define VXLAN_F_TTL_INHERIT 0x10000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) /* Flags that are used in the receive path. These flags must match in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) * order for a socket to be shareable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) #define VXLAN_F_RCV_FLAGS (VXLAN_F_GBP | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) VXLAN_F_GPE | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) VXLAN_F_UDP_ZERO_CSUM6_RX | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) VXLAN_F_REMCSUM_RX | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) VXLAN_F_REMCSUM_NOPARTIAL | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) VXLAN_F_COLLECT_METADATA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) /* Flags that can be set together with VXLAN_F_GPE. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) #define VXLAN_F_ALLOWED_GPE (VXLAN_F_GPE | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) VXLAN_F_IPV6 | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) VXLAN_F_IPV6_LINKLOCAL | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) VXLAN_F_UDP_ZERO_CSUM_TX | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) VXLAN_F_UDP_ZERO_CSUM6_TX | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) VXLAN_F_UDP_ZERO_CSUM6_RX | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) VXLAN_F_COLLECT_METADATA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) struct net_device *vxlan_dev_create(struct net *net, const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) u8 name_assign_type, struct vxlan_config *conf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) static inline netdev_features_t vxlan_features_check(struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) netdev_features_t features)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) u8 l4_hdr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) if (!skb->encapsulation)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) return features;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) switch (vlan_get_protocol(skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) case htons(ETH_P_IP):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) l4_hdr = ip_hdr(skb)->protocol;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) case htons(ETH_P_IPV6):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) l4_hdr = ipv6_hdr(skb)->nexthdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) return features;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) if ((l4_hdr == IPPROTO_UDP) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) (skb->inner_protocol_type != ENCAP_TYPE_ETHER ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) skb->inner_protocol != htons(ETH_P_TEB) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) (skb_inner_mac_header(skb) - skb_transport_header(skb) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) sizeof(struct udphdr) + sizeof(struct vxlanhdr)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) (skb->ip_summed != CHECKSUM_NONE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) !can_checksum_protocol(features, inner_eth_hdr(skb)->h_proto))))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) return features;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) /* IP header + UDP + VXLAN + Ethernet header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) #define VXLAN_HEADROOM (20 + 8 + 8 + 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) /* IPv6 header + UDP + VXLAN + Ethernet header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) #define VXLAN6_HEADROOM (40 + 8 + 8 + 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) static inline struct vxlanhdr *vxlan_hdr(struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) return (struct vxlanhdr *)(udp_hdr(skb) + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) static inline __be32 vxlan_vni(__be32 vni_field)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) #if defined(__BIG_ENDIAN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) return (__force __be32)((__force u32)vni_field >> 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) return (__force __be32)((__force u32)(vni_field & VXLAN_VNI_MASK) << 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) static inline __be32 vxlan_vni_field(__be32 vni)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) #if defined(__BIG_ENDIAN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) return (__force __be32)((__force u32)vni << 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) return (__force __be32)((__force u32)vni >> 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) static inline size_t vxlan_rco_start(__be32 vni_field)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) return be32_to_cpu(vni_field & VXLAN_RCO_MASK) << VXLAN_RCO_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) static inline size_t vxlan_rco_offset(__be32 vni_field)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) return (vni_field & VXLAN_RCO_UDP) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) offsetof(struct udphdr, check) :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) offsetof(struct tcphdr, check);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) static inline __be32 vxlan_compute_rco(unsigned int start, unsigned int offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) __be32 vni_field = cpu_to_be32(start >> VXLAN_RCO_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) if (offset == offsetof(struct udphdr, check))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) vni_field |= VXLAN_RCO_UDP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) return vni_field;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) static inline unsigned short vxlan_get_sk_family(struct vxlan_sock *vs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) return vs->sock->sk->sk_family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) static inline bool vxlan_addr_any(const union vxlan_addr *ipa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) if (ipa->sa.sa_family == AF_INET6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) return ipv6_addr_any(&ipa->sin6.sin6_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) return ipa->sin.sin_addr.s_addr == htonl(INADDR_ANY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) static inline bool vxlan_addr_multicast(const union vxlan_addr *ipa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) if (ipa->sa.sa_family == AF_INET6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) return ipv6_addr_is_multicast(&ipa->sin6.sin6_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) return ipv4_is_multicast(ipa->sin.sin_addr.s_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) #else /* !IS_ENABLED(CONFIG_IPV6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) static inline bool vxlan_addr_any(const union vxlan_addr *ipa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) return ipa->sin.sin_addr.s_addr == htonl(INADDR_ANY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) static inline bool vxlan_addr_multicast(const union vxlan_addr *ipa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) return ipv4_is_multicast(ipa->sin.sin_addr.s_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) #endif /* IS_ENABLED(CONFIG_IPV6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) static inline bool netif_is_vxlan(const struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) return dev->rtnl_link_ops &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) !strcmp(dev->rtnl_link_ops->kind, "vxlan");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) struct switchdev_notifier_vxlan_fdb_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) struct switchdev_notifier_info info; /* must be first */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) union vxlan_addr remote_ip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) __be16 remote_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) __be32 remote_vni;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) u32 remote_ifindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) u8 eth_addr[ETH_ALEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) __be32 vni;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) bool offloaded;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) bool added_by_user;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) #if IS_ENABLED(CONFIG_VXLAN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) int vxlan_fdb_find_uc(struct net_device *dev, const u8 *mac, __be32 vni,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) struct switchdev_notifier_vxlan_fdb_info *fdb_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) int vxlan_fdb_replay(const struct net_device *dev, __be32 vni,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) struct notifier_block *nb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) struct netlink_ext_ack *extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) void vxlan_fdb_clear_offload(const struct net_device *dev, __be32 vni);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) static inline int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) vxlan_fdb_find_uc(struct net_device *dev, const u8 *mac, __be32 vni,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) struct switchdev_notifier_vxlan_fdb_info *fdb_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) static inline int vxlan_fdb_replay(const struct net_device *dev, __be32 vni,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) struct notifier_block *nb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) vxlan_fdb_clear_offload(const struct net_device *dev, __be32 vni)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) static inline void vxlan_flag_attr_error(int attrtype,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) #define VXLAN_FLAG(flg) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) case IFLA_VXLAN_##flg: \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) NL_SET_ERR_MSG_MOD(extack, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) "cannot change " #flg " flag"); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) break
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) switch (attrtype) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) VXLAN_FLAG(TTL_INHERIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) VXLAN_FLAG(LEARNING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) VXLAN_FLAG(PROXY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) VXLAN_FLAG(RSC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) VXLAN_FLAG(L2MISS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) VXLAN_FLAG(L3MISS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) VXLAN_FLAG(COLLECT_METADATA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) VXLAN_FLAG(UDP_ZERO_CSUM6_TX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) VXLAN_FLAG(UDP_ZERO_CSUM6_RX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) VXLAN_FLAG(REMCSUM_TX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) VXLAN_FLAG(REMCSUM_RX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) VXLAN_FLAG(GBP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) VXLAN_FLAG(GPE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) VXLAN_FLAG(REMCSUM_NOPARTIAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) NL_SET_ERR_MSG_MOD(extack, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) "cannot change flag");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) #undef VXLAN_FLAG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) static inline bool vxlan_fdb_nh_path_select(struct nexthop *nh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) int hash,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) struct vxlan_rdst *rdst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) struct fib_nh_common *nhc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) nhc = nexthop_path_fdb_result(nh, hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) if (unlikely(!nhc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) switch (nhc->nhc_gw_family) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) case AF_INET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) rdst->remote_ip.sin.sin_addr.s_addr = nhc->nhc_gw.ipv4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) rdst->remote_ip.sa.sa_family = AF_INET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) case AF_INET6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) rdst->remote_ip.sin6.sin6_addr = nhc->nhc_gw.ipv6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) rdst->remote_ip.sa.sa_family = AF_INET6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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