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authorFan Zhang <roy.fan.zhang@intel.com>2020-09-25 22:36:04 +0100
committerDamjan Marion <dmarion@me.com>2020-09-29 09:00:40 +0000
commit1152e60ebe9a4e9c7fa1c3df780fa999226fb31f (patch)
tree2bd66e0d38647e5a1f918251e98bda6940794078 /src/vat/plugin_api.c
parent8b388e35b2aeca39c277453337751d14aeba0d40 (diff)
dpdk: fix compile
Type: fix Since DPDK is now compiled by meson but some compiles in VPP is missing. This patch fixes that. - Fixes QAT PMD not compiled. QAT meson compile, even for sym crypto PMD, is happened in drive/compress/qat. Originally all PMDs in compressdev is disabled by default. This patch fixes that. - Fixes DPDK plugin version detection. DPDK meson build generates rte_build_config.h, which containing all version information in build-dpdk instead of rte_config.h in make. This patch uses the file to detect version data. - Removed SW crypto PMD auto-creation in cryptodev engine. In case the AESNI-MB PMD required shared library is missing. Signed-off-by: Fan Zhang <roy.fan.zhang@intel.com> Change-Id: I7cd91abb5de303ff5e4c55cd05e011b57f883524
Diffstat (limited to 'src/vat/plugin_api.c')
0 files changed, 0 insertions, 0 deletions
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/*
 * plugin.h: plugin handling
 *
 * Copyright (c) 2011 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef __included_plugin_h__
#define __included_plugin_h__

#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>

/*
 * vlib plugin scheme
 *
 * Almost anything which can be made to work in a vlib unix
 * application will also work in a vlib plugin.
 *
 * The elf-section magic which registers static objects
 * works so long as plugins are preset when the vlib unix process
 * starts. But wait: there's more...
 *
 * If an application calls vlib_load_new_plugins() -- possibly after
 * changing vlib_plugin_main.plugin_path / vlib_plugin_main.plugin_name_filter,
 * -- new plugins will be loaded. That, in turn, allows considerable
 * flexibility in terms of adding feature code or fixing bugs without
 * requiring the data-plane process to restart.
 *
 * When the plugin mechanism loads a plugin, it uses dlsym to locate
 * and call the plugin's function vlib_plugin_register() if it exists.
 * A plugin which expects to be loaded after the vlib application
 * starts uses this callback to modify the application. If vlib_plugin_register
 * returns non-zero, the plugin mechanism dlclose()'s the plugin.
 *
 * Applications control the plugin search path and name filter by
 * declaring the variables vlib_plugin_path and vlib_plugin_name_filter.
 * libvlib.la supplies weak references for these symbols which
 * effectively disable the scheme. In order for the elf-section magic to
 * work, static plugins must be loaded at the earliest possible moment.
 *
 * An application can change these parameters at any time and call
 * vlib_load_new_plugins().
 */

/* *INDENT-OFF* */
typedef CLIB_PACKED(struct {
  u8 default_disabled;
  const char version[32];
  const char version_required[32];
  const char *early_init;
  const char *description;
}) vlib_plugin_registration_t;
/* *INDENT-ON* */

typedef struct
{
  u8 *name;
  u8 *filename;
  struct stat file_info;
  void *handle;

  /* plugin registration */
  vlib_plugin_registration_t *reg;
  char *version;
} plugin_info_t;

typedef struct
{
  char *name;
  u8 is_disabled;
  u8 is_enabled;
  u8 skip_version_check;
} plugin_config_t;

typedef struct
{
  /* loaded plugin info */
  plugin_info_t *plugin_info;
  uword *plugin_by_name_hash;

  /* paths and name filters */
  u8 *plugin_path;
  u8 *plugin_name_filter;
  u8 *vat_plugin_path;
  u8 *vat_plugin_name_filter;
  u8 plugins_default_disable;

  /* plugin configs and hash by name */
  plugin_config_t *configs;
  uword *config_index_by_name;

  /* usual */
  vlib_main_t *vlib_main;
} plugin_main_t;

extern plugin_main_t vlib_plugin_main;

clib_error_t *vlib_plugin_config (vlib_main_t * vm, unformat_input_t * input);
int vlib_plugin_early_init (vlib_main_t * vm);
int vlib_load_new_plugins (plugin_main_t * pm, int from_early_init);
void *vlib_get_plugin_symbol (char *plugin_name, char *symbol_name);
u8 *vlib_get_vat_plugin_path (void);

#define VLIB_PLUGIN_REGISTER() \
  vlib_plugin_registration_t vlib_plugin_registration \
  __attribute__((__section__(".vlib_plugin_registration")))

/* Call a plugin init function: used for init function dependencies. */
#define vlib_call_plugin_init_function(vm,p,x)                  \
({                                                              \
  clib_error_t *(*_f)(vlib_main_t *);                           \
  uword *_fptr = 0;                                             \
  clib_error_t * _error = 0;                                    \
  _fptr= vlib_get_plugin_symbol                                 \
    (p, CLIB_STRING_MACRO(_vlib_init_function_##x));            \
  if (_fptr == 0)                                               \
    {                                                           \
      _error = clib_error_return                                \
        (0, "Plugin %s and/or symbol %s not found.",            \
         p, CLIB_STRING_MACRO(_vlib_init_function_##x));        \
    }                                                           \
  else                                                          \
    {                                                           \
      _f = (void *)(_fptr[0]);                                  \
    }                                                           \
  if (_fptr && ! hash_get (vm->init_functions_called, _f))      \
    {                                                           \
      hash_set1 (vm->init_functions_called, _f);                \
      _error = _f (vm);                                         \
    }                                                           \
  _error;                                                       \
 })

#endif /* __included_plugin_h__ */

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */