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authorSteven Luong <sluong@cisco.com>2021-11-03 15:33:21 -0700
committerDamjan Marion <dmarion@me.com>2021-11-05 19:20:10 +0000
commit51ddd38deb5866b10bbe9712ba6e8c4fb6da6381 (patch)
tree5a326543ec4cc0e4f8b72c19c0853303ada7bef4 /src/plugins/srv6-ad/ad_plugin_doc.rst
parent6259406668cee37d39ef3eb0b17ee5dc94ff02fe (diff)
unittest: gcc-11 errors for clib_strcpy, clib_strstr, clib_strcat, and clib_strncat
There are 3 versions of the string functions. For example, for strcpy, they are 1. strcpy(dst, src) -- the legacy unsafe version 2. strcpy_s(dst, dmax, src) -- C11 safeC version which has an addition argument named dmax. 3. clib_strcpy(dst,src) -- clib version to enable legacy code that uses strcpy to make use of strcpy_s without adding the additional argument, dmax, which is required by the C11 safeC version. The implementation for the clib version is to artificially provide dmax to strcpy_s. In this case, it uses 4096 which assumes that if the legacy code works without blowing up, it is likely to work with the clib version without problem. gcc-11 is getting smarter by checking if dmax is within the object's boundary. When the object is declared as static array, it will flag a warning/error if dmax is out of bound for the object since the real size of dst can be determined at compile time. There is no way to find the real size of dst if the object is dynamically allocated at compile time. For this reason, we simply can't provide support for the clib version of the function anymore. If any code is using the clib version, the choice is to migrate to the safeC version. Type: fix Fixes: b0598497afde60146fe8480331c9f96e7a79475a Signed-off-by: Steven Luong <sluong@cisco.com> Change-Id: I99fa59c878331f995b734588cca3906a1d4782f5
Diffstat (limited to 'src/plugins/srv6-ad/ad_plugin_doc.rst')
0 files changed, 0 insertions, 0 deletions
#n186'>186 187 188 
/*
 * srv6_end_m_gtp4_e.c
 *
 * Copyright (c) 2019 Arrcus Inc 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.
 */

#include <vnet/vnet.h>
#include <vnet/adj/adj.h>
#include <vnet/plugin/plugin.h>
#include <vpp/app/version.h>
#include <srv6-mobile/mobile.h>

srv6_end_main_v4_t srv6_end_main_v4;

static void
clb_dpo_lock_srv6_end_m_gtp4_e (dpo_id_t * dpo)
{
}

static void
clb_dpo_unlock_srv6_end_m_gtp4_e (dpo_id_t * dpo)
{
}

static u8 *
clb_dpo_format_srv6_end_m_gtp4_e (u8 * s, va_list * args)
{
  index_t index = va_arg (*args, index_t);
  CLIB_UNUSED (u32 indent) = va_arg (*args, u32);

  return (format (s, "SR: dynamic_proxy_index:[%u]", index));
}

const static dpo_vft_t dpo_vft = {
  .dv_lock = clb_dpo_lock_srv6_end_m_gtp4_e,
  .dv_unlock = clb_dpo_unlock_srv6_end_m_gtp4_e,
  .dv_format = clb_dpo_format_srv6_end_m_gtp4_e,
};

const static char *const srv6_end_m_gtp4_e_nodes[] = {
  "srv6-end-m-gtp4-e",
  NULL,
};

const static char *const *const dpo_nodes[DPO_PROTO_NUM] = {
  [DPO_PROTO_IP6] = srv6_end_m_gtp4_e_nodes,
};

static u8 fn_name[] = "SRv6-End.M.GTP4.E-plugin";
static u8 keyword_str[] = "end.m.gtp4.e";
static u8 def_str[] =
  "Endpoint function with encapsulation for IPv4/GTP tunnel";
static u8 param_str[] = "";

static u8 *
clb_format_srv6_end_m_gtp4_e (u8 * s, va_list * args)
{
  srv6_end_gtp4_param_t *ls_mem = va_arg (*args, void *);

  s = format (s, "SRv6 End gtp4.e\n\t");

  s = format (s, "IPv4 address position: %d\n", ls_mem->v4src_position);

  return s;
}

static uword
clb_unformat_srv6_end_m_gtp4_e (unformat_input_t * input, va_list * args)
{
  void **plugin_mem_p = va_arg (*args, void **);
  srv6_end_gtp4_param_t *ls_mem;
  u32 v4src_position;

  if (!unformat (input, "end.m.gtp4.e v4src_position %d", &v4src_position))
    return 0;

  ls_mem = clib_mem_alloc_aligned_at_offset (sizeof *ls_mem, 0, 0, 1);
  clib_memset (ls_mem, 0, sizeof *ls_mem);
  *plugin_mem_p = ls_mem;

  ls_mem->v4src_position = v4src_position;

  return 1;
}

static int
clb_creation_srv6_end_m_gtp4_e (ip6_sr_localsid_t * localsid)
{
  return 0;
}

static int
clb_removal_srv6_end_m_gtp4_e (ip6_sr_localsid_t * localsid)
{
  srv6_end_gtp4_param_t *ls_mem;

  ls_mem = localsid->plugin_mem;

  clib_mem_free (ls_mem);

  return 0;
}

static clib_error_t *
srv6_end_m_gtp4_e_init (vlib_main_t * vm)
{
  srv6_end_main_v4_t *sm = &srv6_end_main_v4;
  ip4_header_t *ip4 = &sm->cache_hdr.ip4;
  udp_header_t *udp = &sm->cache_hdr.udp;
  gtpu_header_t *gtpu = &sm->cache_hdr.gtpu;
  dpo_type_t dpo_type;
  vlib_node_t *node;
  int rc;

  sm->vlib_main = vm;
  sm->vnet_main = vnet_get_main ();

  node = vlib_get_node_by_name (vm, (u8 *) "srv6-end-m-gtp4-e");
  sm->end_m_gtp4_e_node_index = node->index;

  node = vlib_get_node_by_name (vm, (u8 *) "error-drop");
  sm->error_node_index = node->index;

  sm->dst_p_len = 32;
  sm->src_p_len = 64;

  // clear the pre cached packet
  clib_memset_u8 (ip4, 0, sizeof (ip4_gtpu_header_t));

  // set defaults
  ip4->ip_version_and_header_length = 0x45;
  ip4->protocol = IP_PROTOCOL_UDP;
  ip4->ttl = 64;

  udp->dst_port = clib_host_to_net_u16 (SRV6_GTP_UDP_DST_PORT);

  gtpu->ver_flags = GTPU_V1_VER | GTPU_PT_GTP;
  gtpu->type = GTPU_TYPE_GTPU;
  //

  dpo_type = dpo_register_new_type (&dpo_vft, dpo_nodes);

  rc = sr_localsid_register_function (vm, fn_name, keyword_str, def_str, param_str, 32,	//prefix len
				      &dpo_type,
				      clb_format_srv6_end_m_gtp4_e,
				      clb_unformat_srv6_end_m_gtp4_e,
				      clb_creation_srv6_end_m_gtp4_e,
				      clb_removal_srv6_end_m_gtp4_e);
  if (rc < 0)
    clib_error_return (0, "SRv6 Endpoint GTP4.E LocalSID function"
		       "couldn't be registered");
  return 0;
}

/* *INDENT-OFF* */
VNET_FEATURE_INIT (srv6_end_m_gtp4_e, static) =
{
  .arc_name = "ip6-unicast",
  .node_name = "srv6-end-m-gtp4-e",
  .runs_before = 0,
};

VLIB_INIT_FUNCTION (srv6_end_m_gtp4_e_init);

VLIB_PLUGIN_REGISTER () = {
  .version = VPP_BUILD_VER,
  .description = "SRv6 GTP Endpoint Functions",
};
/* *INDENT-ON* */

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