drivers/net/octeontx/octeontx_rxtx.c

   1 /*
   2  *   BSD LICENSE
   3  *
   4  *   Copyright (C) Cavium, Inc. 2017. All rights reserved.
   5  *
   6  *   Redistribution and use in source and binary forms, with or without
   7  *   modification, are permitted provided that the following conditions
   8  *   are met:
   9  *
  10  *     * Redistributions of source code must retain the above copyright
  11  *       notice, this list of conditions and the following disclaimer.
  12  *     * Redistributions in binary form must reproduce the above copyright
  13  *       notice, this list of conditions and the following disclaimer in
  14  *       the documentation and/or other materials provided with the
  15  *       distribution.
  16  *     * Neither the name of Cavium, Inc nor the names of its
  17  *       contributors may be used to endorse or promote products derived
  18  *       from this software without specific prior written permission.
  19  *
  20  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <stdint.h>
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <unistd.h>
  37
  38 #include <rte_atomic.h>
  39 #include <rte_common.h>
  40 #include <rte_ethdev.h>
  41 #include <rte_ether.h>
  42 #include <rte_log.h>
  43 #include <rte_mbuf.h>
  44 #include <rte_prefetch.h>
  45
  46 #include "octeontx_ethdev.h"
  47 #include "octeontx_rxtx.h"
  48 #include "octeontx_logs.h"
  49
  50 /* Packet type table */
  51 #define PTYPE_SIZE      OCCTX_PKI_LTYPE_LAST
  52
  53 static const uint32_t __rte_cache_aligned
  54 ptype_table[PTYPE_SIZE][PTYPE_SIZE][PTYPE_SIZE] = {
  55         [LC_NONE][LE_NONE][LF_NONE] = RTE_PTYPE_UNKNOWN,
  56         [LC_NONE][LE_NONE][LF_IPSEC_ESP] = RTE_PTYPE_UNKNOWN,
  57         [LC_NONE][LE_NONE][LF_IPFRAG] = RTE_PTYPE_L4_FRAG,
  58         [LC_NONE][LE_NONE][LF_IPCOMP] = RTE_PTYPE_UNKNOWN,
  59         [LC_NONE][LE_NONE][LF_TCP] = RTE_PTYPE_L4_TCP,
  60         [LC_NONE][LE_NONE][LF_UDP] = RTE_PTYPE_L4_UDP,
  61         [LC_NONE][LE_NONE][LF_GRE] = RTE_PTYPE_TUNNEL_GRE,
  62         [LC_NONE][LE_NONE][LF_UDP_GENEVE] = RTE_PTYPE_TUNNEL_GENEVE,
  63         [LC_NONE][LE_NONE][LF_UDP_VXLAN] = RTE_PTYPE_TUNNEL_VXLAN,
  64         [LC_NONE][LE_NONE][LF_NVGRE] = RTE_PTYPE_TUNNEL_NVGRE,
  65
  66         [LC_IPV4][LE_NONE][LF_NONE] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_UNKNOWN,
  67         [LC_IPV4][LE_NONE][LF_IPSEC_ESP] =
  68                                 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L3_IPV4,
  69         [LC_IPV4][LE_NONE][LF_IPFRAG] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_FRAG,
  70         [LC_IPV4][LE_NONE][LF_IPCOMP] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_UNKNOWN,
  71         [LC_IPV4][LE_NONE][LF_TCP] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_TCP,
  72         [LC_IPV4][LE_NONE][LF_UDP] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_UDP,
  73         [LC_IPV4][LE_NONE][LF_GRE] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_GRE,
  74         [LC_IPV4][LE_NONE][LF_UDP_GENEVE] =
  75                                 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_GENEVE,
  76         [LC_IPV4][LE_NONE][LF_UDP_VXLAN] =
  77                                 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_VXLAN,
  78         [LC_IPV4][LE_NONE][LF_NVGRE] =
  79                                 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_NVGRE,
  80
  81         [LC_IPV4_OPT][LE_NONE][LF_NONE] =
  82                                 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_UNKNOWN,
  83         [LC_IPV4_OPT][LE_NONE][LF_IPSEC_ESP] =
  84                                 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L3_IPV4,
  85         [LC_IPV4_OPT][LE_NONE][LF_IPFRAG] =
  86                                 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_FRAG,
  87         [LC_IPV4_OPT][LE_NONE][LF_IPCOMP] =
  88                                 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_UNKNOWN,
  89         [LC_IPV4_OPT][LE_NONE][LF_TCP] =
  90                                 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_TCP,
  91         [LC_IPV4_OPT][LE_NONE][LF_UDP] =
  92                                 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_UDP,
  93         [LC_IPV4_OPT][LE_NONE][LF_GRE] =
  94                                 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_TUNNEL_GRE,
  95         [LC_IPV4_OPT][LE_NONE][LF_UDP_GENEVE] =
  96                                 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_TUNNEL_GENEVE,
  97         [LC_IPV4_OPT][LE_NONE][LF_UDP_VXLAN] =
  98                                 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_TUNNEL_VXLAN,
  99         [LC_IPV4_OPT][LE_NONE][LF_NVGRE] =
 100                                 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_TUNNEL_NVGRE,
 101
 102         [LC_IPV6][LE_NONE][LF_NONE] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_UNKNOWN,
 103         [LC_IPV6][LE_NONE][LF_IPSEC_ESP] =
 104                                 RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L3_IPV4,
 105         [LC_IPV6][LE_NONE][LF_IPFRAG] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_FRAG,
 106         [LC_IPV6][LE_NONE][LF_IPCOMP] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_UNKNOWN,
 107         [LC_IPV6][LE_NONE][LF_TCP] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_TCP,
 108         [LC_IPV6][LE_NONE][LF_UDP] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_UDP,
 109         [LC_IPV6][LE_NONE][LF_GRE] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_TUNNEL_GRE,
 110         [LC_IPV6][LE_NONE][LF_UDP_GENEVE] =
 111                                 RTE_PTYPE_L3_IPV6 | RTE_PTYPE_TUNNEL_GENEVE,
 112         [LC_IPV6][LE_NONE][LF_UDP_VXLAN] =
 113                                 RTE_PTYPE_L3_IPV6 | RTE_PTYPE_TUNNEL_VXLAN,
 114         [LC_IPV6][LE_NONE][LF_NVGRE] =
 115                                 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_NVGRE,
 116         [LC_IPV6_OPT][LE_NONE][LF_NONE] =
 117                                 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_UNKNOWN,
 118         [LC_IPV6_OPT][LE_NONE][LF_IPSEC_ESP] =
 119                                 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L3_IPV4,
 120         [LC_IPV6_OPT][LE_NONE][LF_IPFRAG] =
 121                                 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_FRAG,
 122         [LC_IPV6_OPT][LE_NONE][LF_IPCOMP] =
 123                                 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_UNKNOWN,
 124         [LC_IPV6_OPT][LE_NONE][LF_TCP] =
 125                                 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_TCP,
 126         [LC_IPV6_OPT][LE_NONE][LF_UDP] =
 127                                 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_UDP,
 128         [LC_IPV6_OPT][LE_NONE][LF_GRE] =
 129                                 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_TUNNEL_GRE,
 130         [LC_IPV6_OPT][LE_NONE][LF_UDP_GENEVE] =
 131                                 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_TUNNEL_GENEVE,
 132         [LC_IPV6_OPT][LE_NONE][LF_UDP_VXLAN] =
 133                                 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_TUNNEL_VXLAN,
 134         [LC_IPV6_OPT][LE_NONE][LF_NVGRE] =
 135                                 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_TUNNEL_NVGRE,
 136
 137 };
 138
 139 static __rte_always_inline uint16_t __hot
 140 __octeontx_xmit_pkts(void *lmtline_va, void *ioreg_va, int64_t *fc_status_va,
 141                         struct rte_mbuf *tx_pkt)
 142 {
 143         uint64_t cmd_buf[4];
 144         uint16_t gaura_id;
 145
 146         if (unlikely(*((volatile int64_t *)fc_status_va) < 0))
 147                 return -ENOSPC;
 148
 149         /* Get the gaura Id */
 150         gaura_id = octeontx_fpa_bufpool_gpool((uintptr_t)tx_pkt->pool->pool_id);
 151
 152         /* Setup PKO_SEND_HDR_S */
 153         cmd_buf[0] = tx_pkt->data_len & 0xffff;
 154         cmd_buf[1] = 0x0;
 155
 156         /* Set don't free bit if reference count > 1 */
 157         if (rte_mbuf_refcnt_read(tx_pkt) > 1)
 158                 cmd_buf[0] |= (1ULL << 58); /* SET DF */
 159
 160         /* Setup PKO_SEND_GATHER_S */
 161         cmd_buf[(1 << 1) | 1] = rte_mbuf_data_dma_addr(tx_pkt);
 162         cmd_buf[(1 << 1) | 0] = PKO_SEND_GATHER_SUBDC |
 163                                 PKO_SEND_GATHER_LDTYPE(0x1ull) |
 164                                 PKO_SEND_GATHER_GAUAR((long)gaura_id) |
 165                                 tx_pkt->data_len;
 166
 167         octeontx_reg_lmtst(lmtline_va, ioreg_va, cmd_buf, PKO_CMD_SZ);
 168
 169         return 0;
 170 }
 171
 172 uint16_t __hot
 173 octeontx_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
 174 {
 175         int count;
 176         struct octeontx_txq *txq = tx_queue;
 177         octeontx_dq_t *dq = &txq->dq;
 178         int res;
 179
 180         count = 0;
 181
 182         while (count < nb_pkts) {
 183                 res = __octeontx_xmit_pkts(dq->lmtline_va, dq->ioreg_va,
 184                                            dq->fc_status_va,
 185                                            tx_pkts[count]);
 186                 if (res < 0)
 187                         break;
 188
 189                 count++;
 190         }
 191
 192         return count; /* return number of pkts transmitted */
 193 }
 194
 195 uint16_t __hot
 196 octeontx_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
 197 {
 198         struct rte_mbuf *mbuf;
 199         struct octeontx_rxq *rxq;
 200         struct rte_event ev;
 201         octtx_wqe_t *wqe;
 202         size_t count;
 203         uint16_t valid_event;
 204
 205         rxq = rx_queue;
 206         count = 0;
 207         while (count < nb_pkts) {
 208                 valid_event = rte_event_dequeue_burst(rxq->evdev,
 209                                                         rxq->ev_ports, &ev,
 210                                                         1, 0);
 211                 if (!valid_event)
 212                         break;
 213
 214                 wqe = (octtx_wqe_t *)(uintptr_t)ev.u64;
 215                 rte_prefetch_non_temporal(wqe);
 216
 217                 /* Get mbuf from wqe */
 218                 mbuf = (struct rte_mbuf *)((uintptr_t)wqe -
 219                                                 OCTTX_PACKET_WQE_SKIP);
 220                 mbuf->packet_type =
 221                 ptype_table[wqe->s.w2.lcty][wqe->s.w2.lety][wqe->s.w2.lfty];
 222                 mbuf->data_off = RTE_PTR_DIFF(wqe->s.w3.addr, mbuf->buf_addr);
 223                 mbuf->pkt_len = wqe->s.w1.len;
 224                 mbuf->data_len = mbuf->pkt_len;
 225                 mbuf->nb_segs = 1;
 226                 mbuf->ol_flags = 0;
 227                 mbuf->port = rxq->port_id;
 228                 rte_mbuf_refcnt_set(mbuf, 1);
 229                 rx_pkts[count++] = mbuf;
 230         }
 231
 232         return count; /* return number of pkts received */
 233 }