app/test-pmd/bpf_cmd.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2018 Intel Corporation
   3  */
   4
   5 #include <stdio.h>
   6 #include <rte_mbuf.h>
   7 #include <rte_ethdev.h>
   8 #include <rte_flow.h>
   9 #include <rte_bpf_ethdev.h>
  10
  11 #include <cmdline.h>
  12 #include <cmdline_parse.h>
  13 #include <cmdline_parse_num.h>
  14 #include <cmdline_parse_string.h>
  15
  16 #include "testpmd.h"
  17
  18 static const struct rte_bpf_xsym bpf_xsym[] = {
  19         {
  20                 .name = RTE_STR(stdout),
  21                 .type = RTE_BPF_XTYPE_VAR,
  22                 .var = {
  23                         .val = (void *)(uintptr_t)&stdout,
  24                         .desc = {
  25                                 .type = RTE_BPF_ARG_PTR,
  26                                 .size = sizeof(stdout),
  27                         },
  28                 },
  29         },
  30         {
  31                 .name = RTE_STR(rte_pktmbuf_dump),
  32                 .type = RTE_BPF_XTYPE_FUNC,
  33                 .func = {
  34                         .val = (void *)rte_pktmbuf_dump,
  35                         .nb_args = 3,
  36                         .args = {
  37                                 [0] = {
  38                                         .type = RTE_BPF_ARG_RAW,
  39                                         .size = sizeof(uintptr_t),
  40                                 },
  41                                 [1] = {
  42                                         .type = RTE_BPF_ARG_PTR_MBUF,
  43                                         .size = sizeof(struct rte_mbuf),
  44                                 },
  45                                 [2] = {
  46                                         .type = RTE_BPF_ARG_RAW,
  47                                         .size = sizeof(uint32_t),
  48                                 },
  49                         },
  50                 },
  51         },
  52 };
  53
  54 /* *** load BPF program *** */
  55 struct cmd_bpf_ld_result {
  56         cmdline_fixed_string_t bpf;
  57         cmdline_fixed_string_t dir;
  58         uint16_t port;
  59         uint16_t queue;
  60         cmdline_fixed_string_t op;
  61         cmdline_fixed_string_t flags;
  62         cmdline_fixed_string_t prm;
  63 };
  64
  65 static void
  66 bpf_parse_flags(const char *str, struct rte_bpf_arg *arg, uint32_t *flags)
  67 {
  68         uint32_t i, v;
  69
  70         *flags = RTE_BPF_ETH_F_NONE;
  71         arg->type = RTE_BPF_ARG_PTR;
  72         arg->size = mbuf_data_size[0];
  73
  74         for (i = 0; str[i] != 0; i++) {
  75                 v = toupper(str[i]);
  76                 if (v == 'J')
  77                         *flags |= RTE_BPF_ETH_F_JIT;
  78                 else if (v == 'M') {
  79                         arg->type = RTE_BPF_ARG_PTR_MBUF;
  80                         arg->size = sizeof(struct rte_mbuf);
  81                         arg->buf_size = mbuf_data_size[0];
  82                 } else if (v == '-')
  83                         continue;
  84                 else
  85                         fprintf(stderr, "unknown flag: \'%c\'", v);
  86         }
  87 }
  88
  89 static void cmd_operate_bpf_ld_parsed(void *parsed_result,
  90                                 __rte_unused struct cmdline *cl,
  91                                 __rte_unused void *data)
  92 {
  93         int32_t rc;
  94         uint32_t flags;
  95         struct cmd_bpf_ld_result *res;
  96         struct rte_bpf_prm prm;
  97         const char *fname, *sname;
  98
  99         res = parsed_result;
 100         memset(&prm, 0, sizeof(prm));
 101         prm.xsym = bpf_xsym;
 102         prm.nb_xsym = RTE_DIM(bpf_xsym);
 103
 104         bpf_parse_flags(res->flags, &prm.prog_arg, &flags);
 105         fname = res->prm;
 106         sname = ".text";
 107
 108         if (strcmp(res->dir, "rx") == 0) {
 109                 rc = rte_bpf_eth_rx_elf_load(res->port, res->queue, &prm,
 110                         fname, sname, flags);
 111                 printf("%d:%s\n", rc, strerror(-rc));
 112         } else if (strcmp(res->dir, "tx") == 0) {
 113                 rc = rte_bpf_eth_tx_elf_load(res->port, res->queue, &prm,
 114                         fname, sname, flags);
 115                 printf("%d:%s\n", rc, strerror(-rc));
 116         } else
 117                 fprintf(stderr, "invalid value: %s\n", res->dir);
 118 }
 119
 120 cmdline_parse_token_string_t cmd_load_bpf_start =
 121         TOKEN_STRING_INITIALIZER(struct cmd_bpf_ld_result,
 122                         bpf, "bpf-load");
 123 cmdline_parse_token_string_t cmd_load_bpf_dir =
 124         TOKEN_STRING_INITIALIZER(struct cmd_bpf_ld_result,
 125                         dir, "rx#tx");
 126 cmdline_parse_token_num_t cmd_load_bpf_port =
 127         TOKEN_NUM_INITIALIZER(struct cmd_bpf_ld_result, port, RTE_UINT8);
 128 cmdline_parse_token_num_t cmd_load_bpf_queue =
 129         TOKEN_NUM_INITIALIZER(struct cmd_bpf_ld_result, queue, RTE_UINT16);
 130 cmdline_parse_token_string_t cmd_load_bpf_flags =
 131         TOKEN_STRING_INITIALIZER(struct cmd_bpf_ld_result,
 132                         flags, NULL);
 133 cmdline_parse_token_string_t cmd_load_bpf_prm =
 134         TOKEN_STRING_INITIALIZER(struct cmd_bpf_ld_result,
 135                         prm, NULL);
 136
 137 cmdline_parse_inst_t cmd_operate_bpf_ld_parse = {
 138         .f = cmd_operate_bpf_ld_parsed,
 139         .data = NULL,
 140         .help_str = "bpf-load rx|tx <port> <queue> <J|M|B> <file_name>",
 141         .tokens = {
 142                 (void *)&cmd_load_bpf_start,
 143                 (void *)&cmd_load_bpf_dir,
 144                 (void *)&cmd_load_bpf_port,
 145                 (void *)&cmd_load_bpf_queue,
 146                 (void *)&cmd_load_bpf_flags,
 147                 (void *)&cmd_load_bpf_prm,
 148                 NULL,
 149         },
 150 };
 151
 152 /* *** unload BPF program *** */
 153 struct cmd_bpf_unld_result {
 154         cmdline_fixed_string_t bpf;
 155         cmdline_fixed_string_t dir;
 156         uint16_t port;
 157         uint16_t queue;
 158 };
 159
 160 static void cmd_operate_bpf_unld_parsed(void *parsed_result,
 161                                 __rte_unused struct cmdline *cl,
 162                                 __rte_unused void *data)
 163 {
 164         struct cmd_bpf_unld_result *res;
 165
 166         res = parsed_result;
 167
 168         if (strcmp(res->dir, "rx") == 0)
 169                 rte_bpf_eth_rx_unload(res->port, res->queue);
 170         else if (strcmp(res->dir, "tx") == 0)
 171                 rte_bpf_eth_tx_unload(res->port, res->queue);
 172         else
 173                 fprintf(stderr, "invalid value: %s\n", res->dir);
 174 }
 175
 176 cmdline_parse_token_string_t cmd_unload_bpf_start =
 177         TOKEN_STRING_INITIALIZER(struct cmd_bpf_unld_result,
 178                         bpf, "bpf-unload");
 179 cmdline_parse_token_string_t cmd_unload_bpf_dir =
 180         TOKEN_STRING_INITIALIZER(struct cmd_bpf_unld_result,
 181                         dir, "rx#tx");
 182 cmdline_parse_token_num_t cmd_unload_bpf_port =
 183         TOKEN_NUM_INITIALIZER(struct cmd_bpf_unld_result, port, RTE_UINT8);
 184 cmdline_parse_token_num_t cmd_unload_bpf_queue =
 185         TOKEN_NUM_INITIALIZER(struct cmd_bpf_unld_result, queue, RTE_UINT16);
 186
 187 cmdline_parse_inst_t cmd_operate_bpf_unld_parse = {
 188         .f = cmd_operate_bpf_unld_parsed,
 189         .data = NULL,
 190         .help_str = "bpf-unload rx|tx <port> <queue>",
 191         .tokens = {
 192                 (void *)&cmd_unload_bpf_start,
 193                 (void *)&cmd_unload_bpf_dir,
 194                 (void *)&cmd_unload_bpf_port,
 195                 (void *)&cmd_unload_bpf_queue,
 196                 NULL,
 197         },
 198 };