From: Ophir Munk Date: Thu, 8 Oct 2020 20:16:54 +0000 (+0000) Subject: app/testpmd: add GENEVE parsing X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=ea0e711b8ae0;p=dpdk.git app/testpmd: add GENEVE parsing GENEVE is a widely used tunneling protocol in modern Virtualized Networks. testpmd already supports parsing of several tunneling protocols including VXLAN, VXLAN-GPE, GRE. This commit adds GENEVE parsing of inner protocols (IPv4-0x0800, IPv6-0x86dd, Ethernet-0x6558) based on IETF draft-ietf-nvo3-geneve-09. GENEVE is considered more flexible than the other protocols. In terms of protocol format GENEVE header has a variable length options as opposed to other tunneling protocols which have a fixed header size. Signed-off-by: Ophir Munk Reviewed-by: Ferruh Yigit --- diff --git a/app/test-pmd/csumonly.c b/app/test-pmd/csumonly.c index 7ece398bd4..a9f33c6427 100644 --- a/app/test-pmd/csumonly.c +++ b/app/test-pmd/csumonly.c @@ -43,6 +43,7 @@ #include #include #include +#include #include "testpmd.h" @@ -63,6 +64,7 @@ #endif uint16_t vxlan_gpe_udp_port = 4790; +uint16_t geneve_udp_port = RTE_GENEVE_DEFAULT_PORT; /* structure that caches offload info for the current packet */ struct testpmd_offload_info { @@ -333,6 +335,64 @@ parse_vxlan_gpe(struct rte_udp_hdr *udp_hdr, info->l2_len += RTE_ETHER_VXLAN_GPE_HLEN; } +/* Fill in outer layers length */ +static void +update_tunnel_outer(struct testpmd_offload_info *info) +{ + info->is_tunnel = 1; + info->outer_ethertype = info->ethertype; + info->outer_l2_len = info->l2_len; + info->outer_l3_len = info->l3_len; + info->outer_l4_proto = info->l4_proto; +} + +/* Parse a geneve header */ +static void +parse_geneve(struct rte_udp_hdr *udp_hdr, + struct testpmd_offload_info *info) +{ + struct rte_ether_hdr *eth_hdr; + struct rte_ipv4_hdr *ipv4_hdr; + struct rte_ipv6_hdr *ipv6_hdr; + struct rte_geneve_hdr *geneve_hdr; + uint16_t geneve_len; + + /* Check udp destination port. */ + if (udp_hdr->dst_port != _htons(geneve_udp_port)) + return; + + geneve_hdr = (struct rte_geneve_hdr *)((char *)udp_hdr + + sizeof(struct rte_udp_hdr)); + geneve_len = sizeof(struct rte_geneve_hdr) + geneve_hdr->opt_len * 4; + if (!geneve_hdr->proto || geneve_hdr->proto == + _htons(RTE_ETHER_TYPE_IPV4)) { + update_tunnel_outer(info); + ipv4_hdr = (struct rte_ipv4_hdr *)((char *)geneve_hdr + + geneve_len); + parse_ipv4(ipv4_hdr, info); + info->ethertype = _htons(RTE_ETHER_TYPE_IPV4); + info->l2_len = 0; + } else if (geneve_hdr->proto == _htons(RTE_ETHER_TYPE_IPV6)) { + update_tunnel_outer(info); + ipv6_hdr = (struct rte_ipv6_hdr *)((char *)geneve_hdr + + geneve_len); + info->ethertype = _htons(RTE_ETHER_TYPE_IPV6); + parse_ipv6(ipv6_hdr, info); + info->l2_len = 0; + + } else if (geneve_hdr->proto == _htons(RTE_GENEVE_TYPE_ETH)) { + update_tunnel_outer(info); + eth_hdr = (struct rte_ether_hdr *)((char *)geneve_hdr + + geneve_len); + parse_ethernet(eth_hdr, info); + } else + return; + + info->l2_len += + (sizeof(struct rte_udp_hdr) + sizeof(struct rte_geneve_hdr) + + ((struct rte_geneve_hdr *)geneve_hdr)->opt_len * 4); +} + /* Parse a gre header */ static void parse_gre(struct simple_gre_hdr *gre_hdr, struct testpmd_offload_info *info) @@ -865,9 +925,17 @@ pkt_burst_checksum_forward(struct fwd_stream *fs) } parse_vxlan(udp_hdr, &info, m->packet_type); - if (info.is_tunnel) + if (info.is_tunnel) { tx_ol_flags |= PKT_TX_TUNNEL_VXLAN; + goto tunnel_update; + } + parse_geneve(udp_hdr, &info); + if (info.is_tunnel) { + tx_ol_flags |= + PKT_TX_TUNNEL_GENEVE; + goto tunnel_update; + } } else if (info.l4_proto == IPPROTO_GRE) { struct simple_gre_hdr *gre_hdr; diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h index 227b694200..9a29d7add0 100644 --- a/app/test-pmd/testpmd.h +++ b/app/test-pmd/testpmd.h @@ -452,6 +452,7 @@ extern struct fwd_lcore **fwd_lcores; extern struct fwd_stream **fwd_streams; extern uint16_t vxlan_gpe_udp_port; /**< UDP port of tunnel VXLAN-GPE. */ +extern uint16_t geneve_udp_port; /**< UDP port of tunnel GENEVE. */ extern portid_t nb_peer_eth_addrs; /**< Number of peer ethernet addresses. */ extern struct rte_ether_addr peer_eth_addrs[RTE_MAX_ETHPORTS]; diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst index 12268bcda4..7d9a00f6e6 100644 --- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst +++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst @@ -1149,11 +1149,11 @@ Where: * ``ip|udp|tcp|sctp`` always relate to the inner layer. * ``outer-ip`` relates to the outer IP layer (only for IPv4) in the case where the packet is recognized - as a tunnel packet by the forwarding engine (vxlan, gre and ipip are + as a tunnel packet by the forwarding engine (vxlan, gre, ipip and geneve are supported). See also the ``csum parse-tunnel`` command. * ``outer-udp`` relates to the outer UDP layer in the case where the packet is recognized - as a tunnel packet by the forwarding engine (vxlan, vxlan-gpe are + as a tunnel packet by the forwarding engine (vxlan, vxlan-gpe, geneve are supported). See also the ``csum parse-tunnel`` command. .. note:: @@ -1213,7 +1213,7 @@ engine:: testpmd> csum parse-tunnel (on|off) (tx_port_id) If enabled, the csum forward engine will try to recognize supported -tunnel headers (vxlan, gre, ipip). +tunnel headers (vxlan, gre, ipip, geneve). If disabled, treat tunnel packets as non-tunneled packets (a inner header is handled as a packet payload). diff --git a/lib/librte_net/meson.build b/lib/librte_net/meson.build index 6c96b361a6..94d816e79f 100644 --- a/lib/librte_net/meson.build +++ b/lib/librte_net/meson.build @@ -16,7 +16,8 @@ headers = files('rte_ip.h', 'rte_net_crc.h', 'rte_mpls.h', 'rte_higig.h', - 'rte_ecpri.h') + 'rte_ecpri.h', + 'rte_geneve.h') sources = files('rte_arp.c', 'rte_ether.c', 'rte_net.c', 'rte_net_crc.c') deps += ['mbuf'] diff --git a/lib/librte_net/rte_geneve.h b/lib/librte_net/rte_geneve.h new file mode 100644 index 0000000000..bb67724c31 --- /dev/null +++ b/lib/librte_net/rte_geneve.h @@ -0,0 +1,66 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright 2020 Mellanox Technologies, Ltd + */ + +#ifndef _RTE_GENEVE_H_ +#define _RTE_GENEVE_H_ + +/** + * @file + * + * GENEVE-related definitions + */ +#include + +#ifdef __cplusplus +extern "C" { +#endif + +/** GENEVE default port. */ +#define RTE_GENEVE_DEFAULT_PORT 6081 + +/** + * GENEVE protocol header. (draft-ietf-nvo3-geneve-09) + * Contains: + * 2-bits version (must be 0). + * 6-bits option length in four byte multiples, not including the eight + * bytes of the fixed tunnel header. + * 1-bit control packet. + * 1-bit critical options in packet. + * 6-bits reserved + * 16-bits Protocol Type. The protocol data unit after the Geneve header + * following the EtherType convention. Ethernet itself is represented by + * the value 0x6558. + * 24-bits Virtual Network Identifier (VNI). Virtual network unique identified. + * 8-bits reserved bits (must be 0 on transmission and ignored on receipt). + * More-bits (optional) variable length options. + */ +__extension__ +struct rte_geneve_hdr { +#if RTE_BYTE_ORDER == RTE_BIG_ENDIAN + uint8_t ver:2; /**< Version. */ + uint8_t opt_len:6; /**< Options length. */ + uint8_t oam:1; /**< Control packet. */ + uint8_t critical:1; /**< Critical packet. */ + uint8_t reserved1:6; /**< Reserved. */ +#else + uint8_t opt_len:6; /**< Options length. */ + uint8_t ver:2; /**< Version. */ + uint8_t reserved1:6; /**< Reserved. */ + uint8_t critical:1; /**< Critical packet. */ + uint8_t oam:1; /**< Control packet. */ +#endif + rte_be16_t proto; /**< Protocol type. */ + uint8_t vni[3]; /**< Virtual network identifier. */ + uint8_t reserved2; /**< Reserved. */ + uint32_t opts[]; /**< Variable length options. */ +} __rte_packed; + +/* GENEVE ETH next protocol types */ +#define RTE_GENEVE_TYPE_ETH 0x6558 /**< Ethernet Protocol. */ + +#ifdef __cplusplus +} +#endif + +#endif /* RTE_GENEVE_H_ */