X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=examples%2Ftep_termination%2Fvxlan.c;h=7732821d9c4a71dab27b6c9d0bc2bc34827a9581;hb=a1883178e9c26afc0ecc18490a86d39d0b04dc07;hp=2f143acce4c8c33d8e06efe36c65698e41282bc6;hpb=4abe471ed6fc1003cb03d90c21c53a11d743a71a;p=dpdk.git diff --git a/examples/tep_termination/vxlan.c b/examples/tep_termination/vxlan.c index 2f143acce4..7732821d9c 100644 --- a/examples/tep_termination/vxlan.c +++ b/examples/tep_termination/vxlan.c @@ -1,35 +1,7 @@ -/*- - * BSD LICENSE - * - * Copyright(c) 2010-2015 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2010-2015 Intel Corporation */ + #include #include #include @@ -41,6 +13,15 @@ #include "main.h" #include "vxlan.h" +static uint16_t +get_psd_sum(void *l3_hdr, uint16_t ethertype, uint64_t ol_flags) +{ + if (ethertype == ETHER_TYPE_IPv4) + return rte_ipv4_phdr_cksum(l3_hdr, ol_flags); + else /* assume ethertype == ETHER_TYPE_IPv6 */ + return rte_ipv6_phdr_cksum(l3_hdr, ol_flags); +} + /** * Parse an ethernet header to fill the ethertype, outer_l2_len, outer_l3_len and * ipproto. This function is able to recognize IPv4/IPv6 with one optional vlan @@ -83,6 +64,76 @@ parse_ethernet(struct ether_hdr *eth_hdr, union tunnel_offload_info *info, } } +/** + * Calculate the checksum of a packet in hardware + */ +static uint64_t +process_inner_cksums(struct ether_hdr *eth_hdr, union tunnel_offload_info *info) +{ + void *l3_hdr = NULL; + uint8_t l4_proto; + uint16_t ethertype; + struct ipv4_hdr *ipv4_hdr; + struct ipv6_hdr *ipv6_hdr; + struct udp_hdr *udp_hdr; + struct tcp_hdr *tcp_hdr; + struct sctp_hdr *sctp_hdr; + uint64_t ol_flags = 0; + + info->l2_len = sizeof(struct ether_hdr); + ethertype = rte_be_to_cpu_16(eth_hdr->ether_type); + + if (ethertype == ETHER_TYPE_VLAN) { + struct vlan_hdr *vlan_hdr = (struct vlan_hdr *)(eth_hdr + 1); + info->l2_len += sizeof(struct vlan_hdr); + ethertype = rte_be_to_cpu_16(vlan_hdr->eth_proto); + } + + l3_hdr = (char *)eth_hdr + info->l2_len; + + if (ethertype == ETHER_TYPE_IPv4) { + ipv4_hdr = (struct ipv4_hdr *)l3_hdr; + ipv4_hdr->hdr_checksum = 0; + ol_flags |= PKT_TX_IPV4; + ol_flags |= PKT_TX_IP_CKSUM; + info->l3_len = sizeof(struct ipv4_hdr); + l4_proto = ipv4_hdr->next_proto_id; + } else if (ethertype == ETHER_TYPE_IPv6) { + ipv6_hdr = (struct ipv6_hdr *)l3_hdr; + info->l3_len = sizeof(struct ipv6_hdr); + l4_proto = ipv6_hdr->proto; + ol_flags |= PKT_TX_IPV6; + } else + return 0; /* packet type not supported, nothing to do */ + + if (l4_proto == IPPROTO_UDP) { + udp_hdr = (struct udp_hdr *)((char *)l3_hdr + info->l3_len); + ol_flags |= PKT_TX_UDP_CKSUM; + udp_hdr->dgram_cksum = get_psd_sum(l3_hdr, + ethertype, ol_flags); + } else if (l4_proto == IPPROTO_TCP) { + tcp_hdr = (struct tcp_hdr *)((char *)l3_hdr + info->l3_len); + /* Put PKT_TX_TCP_SEG bit setting before get_psd_sum(), because + * it depends on PKT_TX_TCP_SEG to calculate pseudo-header + * checksum. + */ + if (tso_segsz != 0) { + ol_flags |= PKT_TX_TCP_SEG; + info->tso_segsz = tso_segsz; + info->l4_len = (tcp_hdr->data_off & 0xf0) >> 2; + } + ol_flags |= PKT_TX_TCP_CKSUM; + tcp_hdr->cksum = get_psd_sum(l3_hdr, ethertype, ol_flags); + + } else if (l4_proto == IPPROTO_SCTP) { + sctp_hdr = (struct sctp_hdr *)((char *)l3_hdr + info->l3_len); + sctp_hdr->cksum = 0; + ol_flags |= PKT_TX_SCTP_CKSUM; + } + + return ol_flags; +} + int decapsulation(struct rte_mbuf *pkt) { @@ -93,6 +144,7 @@ decapsulation(struct rte_mbuf *pkt) struct ether_hdr *phdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *); parse_ethernet(phdr, &info, &l4_proto); + if (l4_proto != IPPROTO_UDP) return -1; @@ -103,8 +155,7 @@ decapsulation(struct rte_mbuf *pkt) * (rfc7348) or that the rx offload flag is set (i40e only * currently)*/ if (udp_hdr->dst_port != rte_cpu_to_be_16(DEFAULT_VXLAN_PORT) && - (pkt->ol_flags & (PKT_RX_TUNNEL_IPV4_HDR | - PKT_RX_TUNNEL_IPV6_HDR)) == 0) + (pkt->packet_type & RTE_PTYPE_TUNNEL_MASK) == 0) return -1; outer_header_len = info.outer_l2_len + info.outer_l3_len + sizeof(struct udp_hdr) + sizeof(struct vxlan_hdr); @@ -120,6 +171,7 @@ encapsulation(struct rte_mbuf *m, uint8_t queue_id) uint vport_id; uint64_t ol_flags = 0; uint32_t old_len = m->pkt_len, hash; + union tunnel_offload_info tx_offload = { .data = 0 }; struct ether_hdr *phdr = rte_pktmbuf_mtod(m, struct ether_hdr *); /*Allocate space for new ethernet, IPv4, UDP and VXLAN headers*/ @@ -141,17 +193,29 @@ encapsulation(struct rte_mbuf *m, uint8_t queue_id) /* copy in IP header */ ip = rte_memcpy(ip, &app_ip_hdr[vport_id], sizeof(struct ipv4_hdr)); - ip->total_length = rte_cpu_to_be_16(m->data_len + ip->total_length = rte_cpu_to_be_16(m->pkt_len - sizeof(struct ether_hdr)); /* outer IP checksum */ ol_flags |= PKT_TX_OUTER_IP_CKSUM; ip->hdr_checksum = 0; + /* inner IP checksum offload */ + if (tx_checksum) { + ol_flags |= process_inner_cksums(phdr, &tx_offload); + m->l2_len = tx_offload.l2_len; + m->l3_len = tx_offload.l3_len; + m->l4_len = tx_offload.l4_len; + m->l2_len += ETHER_VXLAN_HLEN; + } + m->outer_l2_len = sizeof(struct ether_hdr); m->outer_l3_len = sizeof(struct ipv4_hdr); + ol_flags |= PKT_TX_TUNNEL_VXLAN; + m->ol_flags |= ol_flags; + m->tso_segsz = tx_offload.tso_segsz; /*VXLAN HEADER*/ vxlan->vx_flags = rte_cpu_to_be_32(VXLAN_HF_VNI);