examples/l3fwd/l3fwd_em_hlm.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2016-2018 Intel Corporation.
   3  * Copyright(c) 2017-2018 Linaro Limited.
   4  */
   5
   6 #ifndef __L3FWD_EM_HLM_H__
   7 #define __L3FWD_EM_HLM_H__
   8
   9 #if defined RTE_ARCH_X86
  10 #include "l3fwd_sse.h"
  11 #include "l3fwd_em_hlm_sse.h"
  12 #elif defined RTE_MACHINE_CPUFLAG_NEON
  13 #include "l3fwd_neon.h"
  14 #include "l3fwd_em_hlm_neon.h"
  15 #endif
  16
  17 #ifdef RTE_ARCH_ARM64
  18 #define EM_HASH_LOOKUP_COUNT 16
  19 #else
  20 #define EM_HASH_LOOKUP_COUNT 8
  21 #endif
  22
  23
  24 static __rte_always_inline void
  25 em_get_dst_port_ipv4xN(struct lcore_conf *qconf, struct rte_mbuf *m[],
  26                 uint16_t portid, uint16_t dst_port[])
  27 {
  28         int i;
  29         int32_t ret[EM_HASH_LOOKUP_COUNT];
  30         union ipv4_5tuple_host key[EM_HASH_LOOKUP_COUNT];
  31         const void *key_array[EM_HASH_LOOKUP_COUNT];
  32
  33         for (i = 0; i < EM_HASH_LOOKUP_COUNT; i++) {
  34                 get_ipv4_5tuple(m[i], mask0.x, &key[i]);
  35                 key_array[i] = &key[i];
  36         }
  37
  38         rte_hash_lookup_bulk(qconf->ipv4_lookup_struct, &key_array[0],
  39                              EM_HASH_LOOKUP_COUNT, ret);
  40
  41         for (i = 0; i < EM_HASH_LOOKUP_COUNT; i++) {
  42                 dst_port[i] = ((ret[i] < 0) ?
  43                                 portid : ipv4_l3fwd_out_if[ret[i]]);
  44
  45                 if (dst_port[i] >= RTE_MAX_ETHPORTS ||
  46                                 (enabled_port_mask & 1 << dst_port[i]) == 0)
  47                         dst_port[i] = portid;
  48         }
  49 }
  50
  51 static __rte_always_inline void
  52 em_get_dst_port_ipv6xN(struct lcore_conf *qconf, struct rte_mbuf *m[],
  53                 uint16_t portid, uint16_t dst_port[])
  54 {
  55         int i;
  56         int32_t ret[EM_HASH_LOOKUP_COUNT];
  57         union ipv6_5tuple_host key[EM_HASH_LOOKUP_COUNT];
  58         const void *key_array[EM_HASH_LOOKUP_COUNT];
  59
  60         for (i = 0; i < EM_HASH_LOOKUP_COUNT; i++) {
  61                 get_ipv6_5tuple(m[i], mask1.x, mask2.x, &key[i]);
  62                 key_array[i] = &key[i];
  63         }
  64
  65         rte_hash_lookup_bulk(qconf->ipv6_lookup_struct, &key_array[0],
  66                              EM_HASH_LOOKUP_COUNT, ret);
  67
  68         for (i = 0; i < EM_HASH_LOOKUP_COUNT; i++) {
  69                 dst_port[i] = ((ret[i] < 0) ?
  70                                 portid : ipv6_l3fwd_out_if[ret[i]]);
  71
  72                 if (dst_port[i] >= RTE_MAX_ETHPORTS ||
  73                                 (enabled_port_mask & 1 << dst_port[i]) == 0)
  74                         dst_port[i] = portid;
  75         }
  76 }
  77
  78 static __rte_always_inline void
  79 em_get_dst_port_ipv4xN_events(struct lcore_conf *qconf, struct rte_mbuf *m[],
  80                               uint16_t dst_port[])
  81 {
  82         int i;
  83         int32_t ret[EM_HASH_LOOKUP_COUNT];
  84         union ipv4_5tuple_host key[EM_HASH_LOOKUP_COUNT];
  85         const void *key_array[EM_HASH_LOOKUP_COUNT];
  86
  87         for (i = 0; i < EM_HASH_LOOKUP_COUNT; i++) {
  88                 get_ipv4_5tuple(m[i], mask0.x, &key[i]);
  89                 key_array[i] = &key[i];
  90         }
  91
  92         rte_hash_lookup_bulk(qconf->ipv4_lookup_struct, &key_array[0],
  93                              EM_HASH_LOOKUP_COUNT, ret);
  94
  95         for (i = 0; i < EM_HASH_LOOKUP_COUNT; i++) {
  96                 dst_port[i] = ((ret[i] < 0) ?
  97                                 m[i]->port : ipv4_l3fwd_out_if[ret[i]]);
  98
  99                 if (dst_port[i] >= RTE_MAX_ETHPORTS ||
 100                                 (enabled_port_mask & 1 << dst_port[i]) == 0)
 101                         dst_port[i] = m[i]->port;
 102         }
 103 }
 104
 105 static __rte_always_inline void
 106 em_get_dst_port_ipv6xN_events(struct lcore_conf *qconf, struct rte_mbuf *m[],
 107                               uint16_t dst_port[])
 108 {
 109         int i;
 110         int32_t ret[EM_HASH_LOOKUP_COUNT];
 111         union ipv6_5tuple_host key[EM_HASH_LOOKUP_COUNT];
 112         const void *key_array[EM_HASH_LOOKUP_COUNT];
 113
 114         for (i = 0; i < EM_HASH_LOOKUP_COUNT; i++) {
 115                 get_ipv6_5tuple(m[i], mask1.x, mask2.x, &key[i]);
 116                 key_array[i] = &key[i];
 117         }
 118
 119         rte_hash_lookup_bulk(qconf->ipv6_lookup_struct, &key_array[0],
 120                              EM_HASH_LOOKUP_COUNT, ret);
 121
 122         for (i = 0; i < EM_HASH_LOOKUP_COUNT; i++) {
 123                 dst_port[i] = ((ret[i] < 0) ?
 124                                 m[i]->port : ipv6_l3fwd_out_if[ret[i]]);
 125
 126                 if (dst_port[i] >= RTE_MAX_ETHPORTS ||
 127                                 (enabled_port_mask & 1 << dst_port[i]) == 0)
 128                         dst_port[i] = m[i]->port;
 129         }
 130 }
 131
 132 static __rte_always_inline uint16_t
 133 em_get_dst_port(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
 134                 uint16_t portid)
 135 {
 136         uint16_t next_hop;
 137         struct rte_ipv4_hdr *ipv4_hdr;
 138         struct rte_ipv6_hdr *ipv6_hdr;
 139         uint32_t tcp_or_udp;
 140         uint32_t l3_ptypes;
 141
 142         tcp_or_udp = pkt->packet_type & (RTE_PTYPE_L4_TCP | RTE_PTYPE_L4_UDP);
 143         l3_ptypes = pkt->packet_type & RTE_PTYPE_L3_MASK;
 144
 145         if (tcp_or_udp && (l3_ptypes == RTE_PTYPE_L3_IPV4)) {
 146
 147                 /* Handle IPv4 headers.*/
 148                 ipv4_hdr = rte_pktmbuf_mtod_offset(pkt, struct rte_ipv4_hdr *,
 149                                 sizeof(struct rte_ether_hdr));
 150
 151                 next_hop = em_get_ipv4_dst_port(ipv4_hdr, portid,
 152                                 qconf->ipv4_lookup_struct);
 153
 154                 if (next_hop >= RTE_MAX_ETHPORTS ||
 155                                 (enabled_port_mask & 1 << next_hop) == 0)
 156                         next_hop = portid;
 157
 158                 return next_hop;
 159
 160         } else if (tcp_or_udp && (l3_ptypes == RTE_PTYPE_L3_IPV6)) {
 161
 162                 /* Handle IPv6 headers.*/
 163                 ipv6_hdr = rte_pktmbuf_mtod_offset(pkt, struct rte_ipv6_hdr *,
 164                                 sizeof(struct rte_ether_hdr));
 165
 166                 next_hop = em_get_ipv6_dst_port(ipv6_hdr, portid,
 167                                 qconf->ipv6_lookup_struct);
 168
 169                 if (next_hop >= RTE_MAX_ETHPORTS ||
 170                                 (enabled_port_mask & 1 << next_hop) == 0)
 171                         next_hop = portid;
 172
 173                 return next_hop;
 174
 175         }
 176
 177         return portid;
 178 }
 179
 180 /*
 181  * Buffer optimized handling of packets, invoked
 182  * from main_loop.
 183  */
 184 static inline void
 185 l3fwd_em_send_packets(int nb_rx, struct rte_mbuf **pkts_burst,
 186                 uint16_t portid, struct lcore_conf *qconf)
 187 {
 188         int32_t i, j, pos;
 189         uint16_t dst_port[MAX_PKT_BURST];
 190
 191         /*
 192          * Send nb_rx - nb_rx % EM_HASH_LOOKUP_COUNT packets
 193          * in groups of EM_HASH_LOOKUP_COUNT.
 194          */
 195         int32_t n = RTE_ALIGN_FLOOR(nb_rx, EM_HASH_LOOKUP_COUNT);
 196
 197         for (j = 0; j < EM_HASH_LOOKUP_COUNT && j < nb_rx; j++) {
 198                 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[j],
 199                                                struct rte_ether_hdr *) + 1);
 200         }
 201
 202         for (j = 0; j < n; j += EM_HASH_LOOKUP_COUNT) {
 203
 204                 uint32_t pkt_type = RTE_PTYPE_L3_MASK |
 205                                     RTE_PTYPE_L4_TCP | RTE_PTYPE_L4_UDP;
 206                 uint32_t l3_type, tcp_or_udp;
 207
 208                 for (i = 0; i < EM_HASH_LOOKUP_COUNT; i++)
 209                         pkt_type &= pkts_burst[j + i]->packet_type;
 210
 211                 l3_type = pkt_type & RTE_PTYPE_L3_MASK;
 212                 tcp_or_udp = pkt_type & (RTE_PTYPE_L4_TCP | RTE_PTYPE_L4_UDP);
 213
 214                 for (i = 0, pos = j + EM_HASH_LOOKUP_COUNT;
 215                      i < EM_HASH_LOOKUP_COUNT && pos < nb_rx; i++, pos++) {
 216                         rte_prefetch0(rte_pktmbuf_mtod(
 217                                         pkts_burst[pos],
 218                                         struct rte_ether_hdr *) + 1);
 219                 }
 220
 221                 if (tcp_or_udp && (l3_type == RTE_PTYPE_L3_IPV4)) {
 222
 223                         em_get_dst_port_ipv4xN(qconf, &pkts_burst[j], portid,
 224                                                &dst_port[j]);
 225
 226                 } else if (tcp_or_udp && (l3_type == RTE_PTYPE_L3_IPV6)) {
 227
 228                         em_get_dst_port_ipv6xN(qconf, &pkts_burst[j], portid,
 229                                                &dst_port[j]);
 230
 231                 } else {
 232                         for (i = 0; i < EM_HASH_LOOKUP_COUNT; i++)
 233                                 dst_port[j + i] = em_get_dst_port(qconf,
 234                                                 pkts_burst[j + i], portid);
 235                 }
 236         }
 237
 238         for (; j < nb_rx; j++)
 239                 dst_port[j] = em_get_dst_port(qconf, pkts_burst[j], portid);
 240
 241         send_packets_multi(qconf, pkts_burst, dst_port, nb_rx);
 242
 243 }
 244
 245 /*
 246  * Buffer optimized handling of events, invoked
 247  * from main_loop.
 248  */
 249 static inline void
 250 l3fwd_em_process_events(int nb_rx, struct rte_event **ev,
 251                      struct lcore_conf *qconf)
 252 {
 253         int32_t i, j, pos;
 254         uint16_t dst_port[MAX_PKT_BURST];
 255         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 256
 257         /*
 258          * Send nb_rx - nb_rx % EM_HASH_LOOKUP_COUNT packets
 259          * in groups of EM_HASH_LOOKUP_COUNT.
 260          */
 261         int32_t n = RTE_ALIGN_FLOOR(nb_rx, EM_HASH_LOOKUP_COUNT);
 262
 263         for (j = 0; j < EM_HASH_LOOKUP_COUNT && j < nb_rx; j++) {
 264                 pkts_burst[j] = ev[j]->mbuf;
 265                 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[j],
 266                                                struct rte_ether_hdr *) + 1);
 267         }
 268
 269         for (j = 0; j < n; j += EM_HASH_LOOKUP_COUNT) {
 270
 271                 uint32_t pkt_type = RTE_PTYPE_L3_MASK |
 272                                     RTE_PTYPE_L4_TCP | RTE_PTYPE_L4_UDP;
 273                 uint32_t l3_type, tcp_or_udp;
 274
 275                 for (i = 0; i < EM_HASH_LOOKUP_COUNT; i++)
 276                         pkt_type &= pkts_burst[j + i]->packet_type;
 277
 278                 l3_type = pkt_type & RTE_PTYPE_L3_MASK;
 279                 tcp_or_udp = pkt_type & (RTE_PTYPE_L4_TCP | RTE_PTYPE_L4_UDP);
 280
 281                 for (i = 0, pos = j + EM_HASH_LOOKUP_COUNT;
 282                      i < EM_HASH_LOOKUP_COUNT && pos < nb_rx; i++, pos++) {
 283                         rte_prefetch0(rte_pktmbuf_mtod(
 284                                         pkts_burst[pos],
 285                                         struct rte_ether_hdr *) + 1);
 286                 }
 287
 288                 if (tcp_or_udp && (l3_type == RTE_PTYPE_L3_IPV4)) {
 289
 290                         em_get_dst_port_ipv4xN_events(qconf, &pkts_burst[j],
 291                                                &dst_port[j]);
 292
 293                 } else if (tcp_or_udp && (l3_type == RTE_PTYPE_L3_IPV6)) {
 294
 295                         em_get_dst_port_ipv6xN_events(qconf, &pkts_burst[j],
 296                                                &dst_port[j]);
 297
 298                 } else {
 299                         for (i = 0; i < EM_HASH_LOOKUP_COUNT; i++) {
 300                                 pkts_burst[j + i]->port = em_get_dst_port(qconf,
 301                                                 pkts_burst[j + i],
 302                                                 pkts_burst[j + i]->port);
 303                                 process_packet(pkts_burst[j + i],
 304                                                 &pkts_burst[j + i]->port);
 305                         }
 306                         continue;
 307                 }
 308                 processx4_step3(&pkts_burst[j], &dst_port[j]);
 309
 310                 for (i = 0; i < EM_HASH_LOOKUP_COUNT; i++)
 311                         pkts_burst[j + i]->port = dst_port[j + i];
 312
 313         }
 314
 315         for (; j < nb_rx; j++) {
 316                 pkts_burst[j]->port = em_get_dst_port(qconf, pkts_burst[j],
 317                                                       pkts_burst[j]->port);
 318                 process_packet(pkts_burst[j], &pkts_burst[j]->port);
 319         }
 320 }
 321 #endif /* __L3FWD_EM_HLM_H__ */