app/test/packet_burst_generator.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 Intel Corporation
   3  */
   4
   5 #include <rte_byteorder.h>
   6 #include <rte_mbuf.h>
   7
   8 #include "packet_burst_generator.h"
   9
  10 #define UDP_SRC_PORT 1024
  11 #define UDP_DST_PORT 1024
  12
  13
  14 #define IP_DEFTTL  64   /* from RFC 1340. */
  15 #define IP_VERSION 0x40
  16 #define IP_HDRLEN  0x05 /* default IP header length == five 32-bits words. */
  17 #define IP_VHL_DEF (IP_VERSION | IP_HDRLEN)
  18
  19 static void
  20 copy_buf_to_pkt_segs(void *buf, unsigned len, struct rte_mbuf *pkt,
  21                 unsigned offset)
  22 {
  23         struct rte_mbuf *seg;
  24         void *seg_buf;
  25         unsigned copy_len;
  26
  27         seg = pkt;
  28         while (offset >= seg->data_len) {
  29                 offset -= seg->data_len;
  30                 seg = seg->next;
  31         }
  32         copy_len = seg->data_len - offset;
  33         seg_buf = rte_pktmbuf_mtod_offset(seg, char *, offset);
  34         while (len > copy_len) {
  35                 rte_memcpy(seg_buf, buf, (size_t) copy_len);
  36                 len -= copy_len;
  37                 buf = ((char *) buf + copy_len);
  38                 seg = seg->next;
  39                 seg_buf = rte_pktmbuf_mtod(seg, void *);
  40         }
  41         rte_memcpy(seg_buf, buf, (size_t) len);
  42 }
  43
  44 static inline void
  45 copy_buf_to_pkt(void *buf, unsigned len, struct rte_mbuf *pkt, unsigned offset)
  46 {
  47         if (offset + len <= pkt->data_len) {
  48                 rte_memcpy(rte_pktmbuf_mtod_offset(pkt, char *, offset), buf,
  49                            (size_t) len);
  50                 return;
  51         }
  52         copy_buf_to_pkt_segs(buf, len, pkt, offset);
  53 }
  54
  55 void
  56 initialize_eth_header(struct ether_hdr *eth_hdr, struct ether_addr *src_mac,
  57                 struct ether_addr *dst_mac, uint16_t ether_type,
  58                 uint8_t vlan_enabled, uint16_t van_id)
  59 {
  60         ether_addr_copy(dst_mac, &eth_hdr->d_addr);
  61         ether_addr_copy(src_mac, &eth_hdr->s_addr);
  62
  63         if (vlan_enabled) {
  64                 struct vlan_hdr *vhdr = (struct vlan_hdr *)((uint8_t *)eth_hdr +
  65                                 sizeof(struct ether_hdr));
  66
  67                 eth_hdr->ether_type = rte_cpu_to_be_16(ETHER_TYPE_VLAN);
  68
  69                 vhdr->eth_proto =  rte_cpu_to_be_16(ether_type);
  70                 vhdr->vlan_tci = van_id;
  71         } else {
  72                 eth_hdr->ether_type = rte_cpu_to_be_16(ether_type);
  73         }
  74 }
  75
  76 void
  77 initialize_arp_header(struct rte_arp_hdr *arp_hdr, struct ether_addr *src_mac,
  78                 struct ether_addr *dst_mac, uint32_t src_ip, uint32_t dst_ip,
  79                 uint32_t opcode)
  80 {
  81         arp_hdr->arp_hardware = rte_cpu_to_be_16(RTE_ARP_HRD_ETHER);
  82         arp_hdr->arp_protocol = rte_cpu_to_be_16(ETHER_TYPE_IPv4);
  83         arp_hdr->arp_hlen = ETHER_ADDR_LEN;
  84         arp_hdr->arp_plen = sizeof(uint32_t);
  85         arp_hdr->arp_opcode = rte_cpu_to_be_16(opcode);
  86         ether_addr_copy(src_mac, &arp_hdr->arp_data.arp_sha);
  87         arp_hdr->arp_data.arp_sip = src_ip;
  88         ether_addr_copy(dst_mac, &arp_hdr->arp_data.arp_tha);
  89         arp_hdr->arp_data.arp_tip = dst_ip;
  90 }
  91
  92 uint16_t
  93 initialize_udp_header(struct udp_hdr *udp_hdr, uint16_t src_port,
  94                 uint16_t dst_port, uint16_t pkt_data_len)
  95 {
  96         uint16_t pkt_len;
  97
  98         pkt_len = (uint16_t) (pkt_data_len + sizeof(struct udp_hdr));
  99
 100         udp_hdr->src_port = rte_cpu_to_be_16(src_port);
 101         udp_hdr->dst_port = rte_cpu_to_be_16(dst_port);
 102         udp_hdr->dgram_len = rte_cpu_to_be_16(pkt_len);
 103         udp_hdr->dgram_cksum = 0; /* No UDP checksum. */
 104
 105         return pkt_len;
 106 }
 107
 108 uint16_t
 109 initialize_tcp_header(struct tcp_hdr *tcp_hdr, uint16_t src_port,
 110                 uint16_t dst_port, uint16_t pkt_data_len)
 111 {
 112         uint16_t pkt_len;
 113
 114         pkt_len = (uint16_t) (pkt_data_len + sizeof(struct tcp_hdr));
 115
 116         memset(tcp_hdr, 0, sizeof(struct tcp_hdr));
 117         tcp_hdr->src_port = rte_cpu_to_be_16(src_port);
 118         tcp_hdr->dst_port = rte_cpu_to_be_16(dst_port);
 119
 120         return pkt_len;
 121 }
 122
 123 uint16_t
 124 initialize_sctp_header(struct sctp_hdr *sctp_hdr, uint16_t src_port,
 125                 uint16_t dst_port, uint16_t pkt_data_len)
 126 {
 127         uint16_t pkt_len;
 128
 129         pkt_len = (uint16_t) (pkt_data_len + sizeof(struct udp_hdr));
 130
 131         sctp_hdr->src_port = rte_cpu_to_be_16(src_port);
 132         sctp_hdr->dst_port = rte_cpu_to_be_16(dst_port);
 133         sctp_hdr->tag = 0;
 134         sctp_hdr->cksum = 0; /* No SCTP checksum. */
 135
 136         return pkt_len;
 137 }
 138
 139 uint16_t
 140 initialize_ipv6_header(struct ipv6_hdr *ip_hdr, uint8_t *src_addr,
 141                 uint8_t *dst_addr, uint16_t pkt_data_len)
 142 {
 143         ip_hdr->vtc_flow = 0;
 144         ip_hdr->payload_len = pkt_data_len;
 145         ip_hdr->proto = IPPROTO_UDP;
 146         ip_hdr->hop_limits = IP_DEFTTL;
 147
 148         rte_memcpy(ip_hdr->src_addr, src_addr, sizeof(ip_hdr->src_addr));
 149         rte_memcpy(ip_hdr->dst_addr, dst_addr, sizeof(ip_hdr->dst_addr));
 150
 151         return (uint16_t) (pkt_data_len + sizeof(struct ipv6_hdr));
 152 }
 153
 154 uint16_t
 155 initialize_ipv4_header(struct ipv4_hdr *ip_hdr, uint32_t src_addr,
 156                 uint32_t dst_addr, uint16_t pkt_data_len)
 157 {
 158         uint16_t pkt_len;
 159         unaligned_uint16_t *ptr16;
 160         uint32_t ip_cksum;
 161
 162         /*
 163          * Initialize IP header.
 164          */
 165         pkt_len = (uint16_t) (pkt_data_len + sizeof(struct ipv4_hdr));
 166
 167         ip_hdr->version_ihl   = IP_VHL_DEF;
 168         ip_hdr->type_of_service   = 0;
 169         ip_hdr->fragment_offset = 0;
 170         ip_hdr->time_to_live   = IP_DEFTTL;
 171         ip_hdr->next_proto_id = IPPROTO_UDP;
 172         ip_hdr->packet_id = 0;
 173         ip_hdr->total_length   = rte_cpu_to_be_16(pkt_len);
 174         ip_hdr->src_addr = rte_cpu_to_be_32(src_addr);
 175         ip_hdr->dst_addr = rte_cpu_to_be_32(dst_addr);
 176
 177         /*
 178          * Compute IP header checksum.
 179          */
 180         ptr16 = (unaligned_uint16_t *)ip_hdr;
 181         ip_cksum = 0;
 182         ip_cksum += ptr16[0]; ip_cksum += ptr16[1];
 183         ip_cksum += ptr16[2]; ip_cksum += ptr16[3];
 184         ip_cksum += ptr16[4];
 185         ip_cksum += ptr16[6]; ip_cksum += ptr16[7];
 186         ip_cksum += ptr16[8]; ip_cksum += ptr16[9];
 187
 188         /*
 189          * Reduce 32 bit checksum to 16 bits and complement it.
 190          */
 191         ip_cksum = ((ip_cksum & 0xFFFF0000) >> 16) +
 192                 (ip_cksum & 0x0000FFFF);
 193         ip_cksum %= 65536;
 194         ip_cksum = (~ip_cksum) & 0x0000FFFF;
 195         if (ip_cksum == 0)
 196                 ip_cksum = 0xFFFF;
 197         ip_hdr->hdr_checksum = (uint16_t) ip_cksum;
 198
 199         return pkt_len;
 200 }
 201
 202 uint16_t
 203 initialize_ipv4_header_proto(struct ipv4_hdr *ip_hdr, uint32_t src_addr,
 204                 uint32_t dst_addr, uint16_t pkt_data_len, uint8_t proto)
 205 {
 206         uint16_t pkt_len;
 207         unaligned_uint16_t *ptr16;
 208         uint32_t ip_cksum;
 209
 210         /*
 211          * Initialize IP header.
 212          */
 213         pkt_len = (uint16_t) (pkt_data_len + sizeof(struct ipv4_hdr));
 214
 215         ip_hdr->version_ihl   = IP_VHL_DEF;
 216         ip_hdr->type_of_service   = 0;
 217         ip_hdr->fragment_offset = 0;
 218         ip_hdr->time_to_live   = IP_DEFTTL;
 219         ip_hdr->next_proto_id = proto;
 220         ip_hdr->packet_id = 0;
 221         ip_hdr->total_length   = rte_cpu_to_be_16(pkt_len);
 222         ip_hdr->src_addr = rte_cpu_to_be_32(src_addr);
 223         ip_hdr->dst_addr = rte_cpu_to_be_32(dst_addr);
 224
 225         /*
 226          * Compute IP header checksum.
 227          */
 228         ptr16 = (unaligned_uint16_t *)ip_hdr;
 229         ip_cksum = 0;
 230         ip_cksum += ptr16[0]; ip_cksum += ptr16[1];
 231         ip_cksum += ptr16[2]; ip_cksum += ptr16[3];
 232         ip_cksum += ptr16[4];
 233         ip_cksum += ptr16[6]; ip_cksum += ptr16[7];
 234         ip_cksum += ptr16[8]; ip_cksum += ptr16[9];
 235
 236         /*
 237          * Reduce 32 bit checksum to 16 bits and complement it.
 238          */
 239         ip_cksum = ((ip_cksum & 0xFFFF0000) >> 16) +
 240                 (ip_cksum & 0x0000FFFF);
 241         ip_cksum %= 65536;
 242         ip_cksum = (~ip_cksum) & 0x0000FFFF;
 243         if (ip_cksum == 0)
 244                 ip_cksum = 0xFFFF;
 245         ip_hdr->hdr_checksum = (uint16_t) ip_cksum;
 246
 247         return pkt_len;
 248 }
 249
 250 /*
 251  * The maximum number of segments per packet is used when creating
 252  * scattered transmit packets composed of a list of mbufs.
 253  */
 254 #define RTE_MAX_SEGS_PER_PKT 255 /**< pkt.nb_segs is a 8-bit unsigned char. */
 255
 256
 257 int
 258 generate_packet_burst(struct rte_mempool *mp, struct rte_mbuf **pkts_burst,
 259                 struct ether_hdr *eth_hdr, uint8_t vlan_enabled, void *ip_hdr,
 260                 uint8_t ipv4, struct udp_hdr *udp_hdr, int nb_pkt_per_burst,
 261                 uint8_t pkt_len, uint8_t nb_pkt_segs)
 262 {
 263         int i, nb_pkt = 0;
 264         size_t eth_hdr_size;
 265
 266         struct rte_mbuf *pkt_seg;
 267         struct rte_mbuf *pkt;
 268
 269         for (nb_pkt = 0; nb_pkt < nb_pkt_per_burst; nb_pkt++) {
 270                 pkt = rte_pktmbuf_alloc(mp);
 271                 if (pkt == NULL) {
 272 nomore_mbuf:
 273                         if (nb_pkt == 0)
 274                                 return -1;
 275                         break;
 276                 }
 277
 278                 pkt->data_len = pkt_len;
 279                 pkt_seg = pkt;
 280                 for (i = 1; i < nb_pkt_segs; i++) {
 281                         pkt_seg->next = rte_pktmbuf_alloc(mp);
 282                         if (pkt_seg->next == NULL) {
 283                                 pkt->nb_segs = i;
 284                                 rte_pktmbuf_free(pkt);
 285                                 goto nomore_mbuf;
 286                         }
 287                         pkt_seg = pkt_seg->next;
 288                         pkt_seg->data_len = pkt_len;
 289                 }
 290                 pkt_seg->next = NULL; /* Last segment of packet. */
 291
 292                 /*
 293                  * Copy headers in first packet segment(s).
 294                  */
 295                 if (vlan_enabled)
 296                         eth_hdr_size = sizeof(struct ether_hdr) + sizeof(struct vlan_hdr);
 297                 else
 298                         eth_hdr_size = sizeof(struct ether_hdr);
 299
 300                 copy_buf_to_pkt(eth_hdr, eth_hdr_size, pkt, 0);
 301
 302                 if (ipv4) {
 303                         copy_buf_to_pkt(ip_hdr, sizeof(struct ipv4_hdr), pkt, eth_hdr_size);
 304                         copy_buf_to_pkt(udp_hdr, sizeof(*udp_hdr), pkt, eth_hdr_size +
 305                                         sizeof(struct ipv4_hdr));
 306                 } else {
 307                         copy_buf_to_pkt(ip_hdr, sizeof(struct ipv6_hdr), pkt, eth_hdr_size);
 308                         copy_buf_to_pkt(udp_hdr, sizeof(*udp_hdr), pkt, eth_hdr_size +
 309                                         sizeof(struct ipv6_hdr));
 310                 }
 311
 312                 /*
 313                  * Complete first mbuf of packet and append it to the
 314                  * burst of packets to be transmitted.
 315                  */
 316                 pkt->nb_segs = nb_pkt_segs;
 317                 pkt->pkt_len = pkt_len;
 318                 pkt->l2_len = eth_hdr_size;
 319
 320                 if (ipv4) {
 321                         pkt->vlan_tci  = ETHER_TYPE_IPv4;
 322                         pkt->l3_len = sizeof(struct ipv4_hdr);
 323                 } else {
 324                         pkt->vlan_tci  = ETHER_TYPE_IPv6;
 325                         pkt->l3_len = sizeof(struct ipv6_hdr);
 326                 }
 327
 328                 pkts_burst[nb_pkt] = pkt;
 329         }
 330
 331         return nb_pkt;
 332 }
 333
 334 int
 335 generate_packet_burst_proto(struct rte_mempool *mp,
 336                 struct rte_mbuf **pkts_burst,
 337                 struct ether_hdr *eth_hdr, uint8_t vlan_enabled, void *ip_hdr,
 338                 uint8_t ipv4, uint8_t proto, void *proto_hdr,
 339                 int nb_pkt_per_burst, uint8_t pkt_len, uint8_t nb_pkt_segs)
 340 {
 341         int i, nb_pkt = 0;
 342         size_t eth_hdr_size;
 343
 344         struct rte_mbuf *pkt_seg;
 345         struct rte_mbuf *pkt;
 346
 347         for (nb_pkt = 0; nb_pkt < nb_pkt_per_burst; nb_pkt++) {
 348                 pkt = rte_pktmbuf_alloc(mp);
 349                 if (pkt == NULL) {
 350 nomore_mbuf:
 351                         if (nb_pkt == 0)
 352                                 return -1;
 353                         break;
 354                 }
 355
 356                 pkt->data_len = pkt_len;
 357                 pkt_seg = pkt;
 358                 for (i = 1; i < nb_pkt_segs; i++) {
 359                         pkt_seg->next = rte_pktmbuf_alloc(mp);
 360                         if (pkt_seg->next == NULL) {
 361                                 pkt->nb_segs = i;
 362                                 rte_pktmbuf_free(pkt);
 363                                 goto nomore_mbuf;
 364                         }
 365                         pkt_seg = pkt_seg->next;
 366                         pkt_seg->data_len = pkt_len;
 367                 }
 368                 pkt_seg->next = NULL; /* Last segment of packet. */
 369
 370                 /*
 371                  * Copy headers in first packet segment(s).
 372                  */
 373                 if (vlan_enabled)
 374                         eth_hdr_size = sizeof(struct ether_hdr) +
 375                                 sizeof(struct vlan_hdr);
 376                 else
 377                         eth_hdr_size = sizeof(struct ether_hdr);
 378
 379                 copy_buf_to_pkt(eth_hdr, eth_hdr_size, pkt, 0);
 380
 381                 if (ipv4) {
 382                         copy_buf_to_pkt(ip_hdr, sizeof(struct ipv4_hdr), pkt,
 383                                 eth_hdr_size);
 384                         switch (proto) {
 385                         case IPPROTO_UDP:
 386                                 copy_buf_to_pkt(proto_hdr,
 387                                         sizeof(struct udp_hdr), pkt,
 388                                         eth_hdr_size + sizeof(struct ipv4_hdr));
 389                                 break;
 390                         case IPPROTO_TCP:
 391                                 copy_buf_to_pkt(proto_hdr,
 392                                         sizeof(struct tcp_hdr), pkt,
 393                                         eth_hdr_size + sizeof(struct ipv4_hdr));
 394                                 break;
 395                         case IPPROTO_SCTP:
 396                                 copy_buf_to_pkt(proto_hdr,
 397                                         sizeof(struct sctp_hdr), pkt,
 398                                         eth_hdr_size + sizeof(struct ipv4_hdr));
 399                                 break;
 400                         default:
 401                                 break;
 402                         }
 403                 } else {
 404                         copy_buf_to_pkt(ip_hdr, sizeof(struct ipv6_hdr), pkt,
 405                                 eth_hdr_size);
 406                         switch (proto) {
 407                         case IPPROTO_UDP:
 408                                 copy_buf_to_pkt(proto_hdr,
 409                                         sizeof(struct udp_hdr), pkt,
 410                                         eth_hdr_size + sizeof(struct ipv6_hdr));
 411                                 break;
 412                         case IPPROTO_TCP:
 413                                 copy_buf_to_pkt(proto_hdr,
 414                                         sizeof(struct tcp_hdr), pkt,
 415                                         eth_hdr_size + sizeof(struct ipv6_hdr));
 416                                 break;
 417                         case IPPROTO_SCTP:
 418                                 copy_buf_to_pkt(proto_hdr,
 419                                         sizeof(struct sctp_hdr), pkt,
 420                                         eth_hdr_size + sizeof(struct ipv6_hdr));
 421                                 break;
 422                         default:
 423                                 break;
 424                         }
 425                 }
 426
 427                 /*
 428                  * Complete first mbuf of packet and append it to the
 429                  * burst of packets to be transmitted.
 430                  */
 431                 pkt->nb_segs = nb_pkt_segs;
 432                 pkt->pkt_len = pkt_len;
 433                 pkt->l2_len = eth_hdr_size;
 434
 435                 if (ipv4) {
 436                         pkt->vlan_tci  = ETHER_TYPE_IPv4;
 437                         pkt->l3_len = sizeof(struct ipv4_hdr);
 438                 } else {
 439                         pkt->vlan_tci  = ETHER_TYPE_IPv6;
 440                         pkt->l3_len = sizeof(struct ipv6_hdr);
 441                 }
 442
 443                 pkts_burst[nb_pkt] = pkt;
 444         }
 445
 446         return nb_pkt;
 447 }