sys/dev/liquidio/lio_rss.c

   1 /*
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2017 Cavium, Inc.. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Cavium, Inc. nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #ifdef RSS
  35
  36 #include "lio_bsd.h"
  37 #include "lio_common.h"
  38 #include "lio_droq.h"
  39 #include "lio_iq.h"
  40 #include "lio_response_manager.h"
  41 #include "lio_device.h"
  42 #include "lio_ctrl.h"
  43 #include "lio_main.h"
  44 #include "lio_network.h"
  45 #include "lio_rss.h"
  46
  47 int     lio_send_rss_param(struct lio *lio);
  48
  49 static void
  50 lio_set_rss_callback(struct octeon_device *oct, uint32_t status, void *arg)
  51 {
  52         struct lio_soft_command *sc = (struct lio_soft_command *)arg;
  53
  54         if (status)
  55                 lio_dev_err(oct, "Failed to SET RSS params\n");
  56         else
  57                 lio_dev_info(oct, "SET RSS params\n");
  58
  59         lio_free_soft_command(oct, sc);
  60 }
  61
  62 static void
  63 lio_set_rss_info(struct lio *lio)
  64 {
  65         struct octeon_device            *oct = lio->oct_dev;
  66         struct lio_rss_params_set       *rss_set = &lio->rss_set;
  67         uint32_t        rss_hash_config;
  68         int             i;
  69         uint8_t         queue_id;
  70
  71         for (i = 0; i < LIO_RSS_TABLE_SZ; i++) {
  72                 queue_id = rss_get_indirection_to_bucket(i);
  73                 queue_id = queue_id % oct->num_oqs;
  74                 rss_set->fw_itable[i] = queue_id;
  75         }
  76
  77         rss_hash_config = rss_gethashconfig();
  78         if (rss_hash_config & RSS_HASHTYPE_RSS_IPV4)
  79                 rss_set->hashinfo |= LIO_RSS_HASH_IPV4;
  80
  81         if (rss_hash_config & RSS_HASHTYPE_RSS_TCP_IPV4)
  82                 rss_set->hashinfo |= LIO_RSS_HASH_TCP_IPV4;
  83
  84         if (rss_hash_config & RSS_HASHTYPE_RSS_IPV6)
  85                 rss_set->hashinfo |= LIO_RSS_HASH_IPV6;
  86
  87         if (rss_hash_config & RSS_HASHTYPE_RSS_TCP_IPV6)
  88                 rss_set->hashinfo |= LIO_RSS_HASH_TCP_IPV6;
  89
  90         if (rss_hash_config & RSS_HASHTYPE_RSS_IPV6_EX)
  91                 rss_set->hashinfo |= LIO_RSS_HASH_IPV6_EX;
  92
  93         if (rss_hash_config & RSS_HASHTYPE_RSS_TCP_IPV6_EX)
  94                 rss_set->hashinfo |= LIO_RSS_HASH_TCP_IPV6_EX;
  95 }
  96
  97 int
  98 lio_send_rss_param(struct lio *lio)
  99 {
 100         struct octeon_device    *oct = lio->oct_dev;
 101         struct lio_soft_command *sc = NULL;
 102         union   octeon_cmd *cmd = NULL;
 103         struct lio_rss_params   *rss_param;
 104         int     i, retval;
 105
 106         sc = lio_alloc_soft_command(oct,
 107                         OCTEON_CMD_SIZE + sizeof(struct lio_rss_params), 0, 0);
 108
 109         if (sc == NULL) {
 110                 lio_dev_err(oct, "%s: Soft command allocation failed\n",
 111                             __func__);
 112                 return (ENOMEM);
 113         }
 114
 115         sc->iq_no = lio->linfo.txpciq[0].s.q_no;
 116
 117         lio_prepare_soft_command(oct, sc, LIO_OPCODE_NIC, LIO_OPCODE_NIC_CMD, 0,
 118                                  0, 0);
 119
 120         sc->callback = lio_set_rss_callback;
 121         sc->callback_arg = sc;
 122         sc->wait_time = 1000;
 123
 124         cmd = (union octeon_cmd *)sc->virtdptr;
 125         cmd->cmd64 = 0;
 126         cmd->s.cmd = LIO_CMD_SET_RSS;
 127
 128         rss_param = (struct lio_rss_params *)(cmd + 1);
 129         rss_param->param.flags = 0;
 130         rss_param->param.itablesize = LIO_RSS_TABLE_SZ;
 131         rss_param->param.hashkeysize = LIO_RSS_KEY_SZ;
 132
 133         lio_set_rss_info(lio);
 134         rss_param->param.hashinfo = lio->rss_set.hashinfo;
 135         memcpy(rss_param->itable, (void *)lio->rss_set.fw_itable,
 136                (size_t)rss_param->param.itablesize);
 137
 138         lio_dev_info(oct, "RSS itable: Size %u\n", rss_param->param.itablesize);
 139         for (i = 0; i < rss_param->param.itablesize; i += 8) {
 140                 lio_dev_dbg(oct, "   %03u:%2u, %03u:%2u, %03u:%2u, %03u:%2u, %03u:%2u, %03u:%2u, %03u:%2u, %03u:%2u\n",
 141                             i + 0, rss_param->itable[i + 0],
 142                             i + 1, rss_param->itable[i + 1],
 143                             i + 2, rss_param->itable[i + 2],
 144                             i + 3, rss_param->itable[i + 3],
 145                             i + 4, rss_param->itable[i + 4],
 146                             i + 5, rss_param->itable[i + 5],
 147                             i + 6, rss_param->itable[i + 6],
 148                             i + 7, rss_param->itable[i + 7]);
 149         }
 150
 151         rss_getkey(lio->rss_set.key);
 152
 153         memcpy(rss_param->key, (void *)lio->rss_set.key,
 154                (size_t)rss_param->param.hashkeysize);
 155
 156         /* swap cmd and rss params */
 157         lio_swap_8B_data((uint64_t *)cmd,
 158                          ((OCTEON_CMD_SIZE + LIO_RSS_PARAM_SIZE) >> 3));
 159
 160         retval = lio_send_soft_command(oct, sc);
 161         if (retval == LIO_IQ_SEND_FAILED) {
 162                 lio_dev_err(oct,
 163                             "%s: Sending soft command failed, status: %x\n",
 164                             __func__, retval);
 165                 lio_free_soft_command(oct, sc);
 166                 return (-1);
 167         }
 168
 169         return (0);
 170 }
 171
 172 #endif  /* RSS */