92073ef961
Including: - code to generate packet bursts for testing rx and tx functionality of bonded device - virtual/stubbed out ethdev for use as slave ethdev in testing Signed-off-by: Declan Doherty <declan.doherty@intel.com> Acked-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
288 lines
8.1 KiB
C
288 lines
8.1 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <rte_byteorder.h>
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#include <rte_mbuf.h>
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#include "packet_burst_generator.h"
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#define UDP_SRC_PORT 1024
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#define UDP_DST_PORT 1024
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#define IP_DEFTTL 64 /* from RFC 1340. */
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#define IP_VERSION 0x40
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#define IP_HDRLEN 0x05 /* default IP header length == five 32-bits words. */
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#define IP_VHL_DEF (IP_VERSION | IP_HDRLEN)
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static void
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copy_buf_to_pkt_segs(void *buf, unsigned len, struct rte_mbuf *pkt,
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unsigned offset)
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{
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struct rte_mbuf *seg;
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void *seg_buf;
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unsigned copy_len;
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seg = pkt;
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while (offset >= seg->pkt.data_len) {
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offset -= seg->pkt.data_len;
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seg = seg->pkt.next;
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}
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copy_len = seg->pkt.data_len - offset;
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seg_buf = ((char *) seg->pkt.data + offset);
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while (len > copy_len) {
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rte_memcpy(seg_buf, buf, (size_t) copy_len);
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len -= copy_len;
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buf = ((char *) buf + copy_len);
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seg = seg->pkt.next;
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seg_buf = seg->pkt.data;
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}
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rte_memcpy(seg_buf, buf, (size_t) len);
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}
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static inline void
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copy_buf_to_pkt(void *buf, unsigned len, struct rte_mbuf *pkt, unsigned offset)
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{
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if (offset + len <= pkt->pkt.data_len) {
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rte_memcpy(((char *) pkt->pkt.data + offset), buf, (size_t) len);
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return;
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}
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copy_buf_to_pkt_segs(buf, len, pkt, offset);
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}
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void
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initialize_eth_header(struct ether_hdr *eth_hdr, struct ether_addr *src_mac,
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struct ether_addr *dst_mac, uint8_t vlan_enabled, uint16_t van_id)
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{
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ether_addr_copy(dst_mac, ð_hdr->d_addr);
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ether_addr_copy(src_mac, ð_hdr->s_addr);
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if (vlan_enabled) {
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struct vlan_hdr *vhdr = (struct vlan_hdr *)((uint8_t *)eth_hdr +
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sizeof(struct ether_hdr));
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eth_hdr->ether_type = rte_cpu_to_be_16(ETHER_TYPE_VLAN);
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vhdr->eth_proto = rte_cpu_to_be_16(ETHER_TYPE_IPv4);
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vhdr->vlan_tci = van_id;
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} else {
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eth_hdr->ether_type = rte_cpu_to_be_16(ETHER_TYPE_VLAN);
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}
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}
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uint16_t
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initialize_udp_header(struct udp_hdr *udp_hdr, uint16_t src_port,
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uint16_t dst_port, uint16_t pkt_data_len)
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{
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uint16_t pkt_len;
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pkt_len = (uint16_t) (pkt_data_len + sizeof(struct udp_hdr));
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udp_hdr->src_port = rte_cpu_to_be_16(src_port);
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udp_hdr->dst_port = rte_cpu_to_be_16(dst_port);
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udp_hdr->dgram_len = rte_cpu_to_be_16(pkt_len);
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udp_hdr->dgram_cksum = 0; /* No UDP checksum. */
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return pkt_len;
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}
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uint16_t
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initialize_ipv6_header(struct ipv6_hdr *ip_hdr, uint8_t *src_addr,
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uint8_t *dst_addr, uint16_t pkt_data_len)
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{
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ip_hdr->vtc_flow = 0;
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ip_hdr->payload_len = pkt_data_len;
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ip_hdr->proto = IPPROTO_UDP;
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ip_hdr->hop_limits = IP_DEFTTL;
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rte_memcpy(ip_hdr->src_addr, src_addr, sizeof(ip_hdr->src_addr));
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rte_memcpy(ip_hdr->dst_addr, dst_addr, sizeof(ip_hdr->dst_addr));
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return (uint16_t) (pkt_data_len + sizeof(struct ipv6_hdr));
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}
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uint16_t
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initialize_ipv4_header(struct ipv4_hdr *ip_hdr, uint32_t src_addr,
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uint32_t dst_addr, uint16_t pkt_data_len)
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{
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uint16_t pkt_len;
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uint16_t *ptr16;
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uint32_t ip_cksum;
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/*
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* Initialize IP header.
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*/
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pkt_len = (uint16_t) (pkt_data_len + sizeof(struct ipv4_hdr));
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ip_hdr->version_ihl = IP_VHL_DEF;
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ip_hdr->type_of_service = 0;
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ip_hdr->fragment_offset = 0;
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ip_hdr->time_to_live = IP_DEFTTL;
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ip_hdr->next_proto_id = IPPROTO_UDP;
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ip_hdr->packet_id = 0;
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ip_hdr->total_length = rte_cpu_to_be_16(pkt_len);
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ip_hdr->src_addr = rte_cpu_to_be_32(src_addr);
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ip_hdr->dst_addr = rte_cpu_to_be_32(dst_addr);
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/*
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* Compute IP header checksum.
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*/
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ptr16 = (uint16_t *)ip_hdr;
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ip_cksum = 0;
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ip_cksum += ptr16[0]; ip_cksum += ptr16[1];
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ip_cksum += ptr16[2]; ip_cksum += ptr16[3];
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ip_cksum += ptr16[4];
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ip_cksum += ptr16[6]; ip_cksum += ptr16[7];
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ip_cksum += ptr16[8]; ip_cksum += ptr16[9];
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/*
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* Reduce 32 bit checksum to 16 bits and complement it.
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*/
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ip_cksum = ((ip_cksum & 0xFFFF0000) >> 16) +
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(ip_cksum & 0x0000FFFF);
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ip_cksum %= 65536;
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ip_cksum = (~ip_cksum) & 0x0000FFFF;
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if (ip_cksum == 0)
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ip_cksum = 0xFFFF;
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ip_hdr->hdr_checksum = (uint16_t) ip_cksum;
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return pkt_len;
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}
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/*
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* The maximum number of segments per packet is used when creating
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* scattered transmit packets composed of a list of mbufs.
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*/
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#define RTE_MAX_SEGS_PER_PKT 255 /**< pkt.nb_segs is a 8-bit unsigned char. */
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#define TXONLY_DEF_PACKET_LEN 64
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#define TXONLY_DEF_PACKET_LEN_128 128
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uint16_t tx_pkt_length = TXONLY_DEF_PACKET_LEN;
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uint16_t tx_pkt_seg_lengths[RTE_MAX_SEGS_PER_PKT] = {
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TXONLY_DEF_PACKET_LEN_128,
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};
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uint8_t tx_pkt_nb_segs = 1;
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int
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generate_packet_burst(struct rte_mempool *mp, struct rte_mbuf **pkts_burst,
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struct ether_hdr *eth_hdr, uint8_t vlan_enabled, void *ip_hdr,
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uint8_t ipv4, struct udp_hdr *udp_hdr, int nb_pkt_per_burst)
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{
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int i, nb_pkt = 0;
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size_t eth_hdr_size;
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struct rte_mbuf *pkt_seg;
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struct rte_mbuf *pkt;
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for (nb_pkt = 0; nb_pkt < nb_pkt_per_burst; nb_pkt++) {
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pkt = rte_pktmbuf_alloc(mp);
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if (pkt == NULL) {
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nomore_mbuf:
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if (nb_pkt == 0)
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return -1;
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break;
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}
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pkt->pkt.data_len = tx_pkt_seg_lengths[0];
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pkt_seg = pkt;
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for (i = 1; i < tx_pkt_nb_segs; i++) {
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pkt_seg->pkt.next = rte_pktmbuf_alloc(mp);
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if (pkt_seg->pkt.next == NULL) {
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pkt->pkt.nb_segs = i;
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rte_pktmbuf_free(pkt);
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goto nomore_mbuf;
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}
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pkt_seg = pkt_seg->pkt.next;
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pkt_seg->pkt.data_len = tx_pkt_seg_lengths[i];
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}
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pkt_seg->pkt.next = NULL; /* Last segment of packet. */
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/*
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* Copy headers in first packet segment(s).
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*/
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if (vlan_enabled)
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eth_hdr_size = sizeof(struct ether_hdr) + sizeof(struct vlan_hdr);
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else
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eth_hdr_size = sizeof(struct ether_hdr);
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copy_buf_to_pkt(eth_hdr, eth_hdr_size, pkt, 0);
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if (ipv4) {
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copy_buf_to_pkt(ip_hdr, sizeof(struct ipv4_hdr), pkt, eth_hdr_size);
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copy_buf_to_pkt(udp_hdr, sizeof(*udp_hdr), pkt, eth_hdr_size +
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sizeof(struct ipv4_hdr));
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} else {
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copy_buf_to_pkt(ip_hdr, sizeof(struct ipv6_hdr), pkt, eth_hdr_size);
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copy_buf_to_pkt(udp_hdr, sizeof(*udp_hdr), pkt, eth_hdr_size +
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sizeof(struct ipv6_hdr));
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}
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/*
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* Complete first mbuf of packet and append it to the
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* burst of packets to be transmitted.
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*/
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pkt->pkt.nb_segs = tx_pkt_nb_segs;
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pkt->pkt.pkt_len = tx_pkt_length;
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pkt->pkt.vlan_macip.f.l2_len = eth_hdr_size;
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if (ipv4) {
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pkt->pkt.vlan_macip.f.vlan_tci = ETHER_TYPE_IPv4;
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pkt->pkt.vlan_macip.f.l3_len = sizeof(struct ipv4_hdr);
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if (vlan_enabled)
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pkt->ol_flags = PKT_RX_IPV4_HDR | PKT_RX_VLAN_PKT;
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else
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pkt->ol_flags = PKT_RX_IPV4_HDR;
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} else {
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pkt->pkt.vlan_macip.f.vlan_tci = ETHER_TYPE_IPv6;
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pkt->pkt.vlan_macip.f.l3_len = sizeof(struct ipv6_hdr);
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if (vlan_enabled)
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pkt->ol_flags = PKT_RX_IPV6_HDR | PKT_RX_VLAN_PKT;
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else
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pkt->ol_flags = PKT_RX_IPV6_HDR;
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}
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pkts_burst[nb_pkt] = pkt;
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}
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return nb_pkt;
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}
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