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authorChris Luke <chrisy@flirble.org>2016-07-07 11:01:17 -0400
committerDamjan Marion <dmarion.lists@gmail.com>2016-07-08 09:41:03 +0000
commit370e9e38e8e0b35810734125e2b6eeac65fefa5d (patch)
treed60f56163bd9fa8397a20b18a801f6ec1d92e17e /vlib-api/vlibsocket/vl_socket_api_h.h
parentce3e971bab3a67b5d484294f5cfd3d270c76bc38 (diff)
VPP-189 Some bugfixes for issues reported by Coverity
CID 130914 Buffer not null terminated CID 130916 Unchecked return value CID 130938 Unchecked return value from library CID 130939 Unchecked return value from library CID 130940 Unchecked return value from library CID 131042 Argument cannot be negative CID 131222 Resource leak CID 131223 Resource leak CID 131334 Double close CID 131335 Read from pointer after free CID 131211 Resource leak CID 131212 Resource leak Change-Id: Idd80b91f621278e0be15911f2ed4354dbe4fc7f2 Signed-off-by: Chris Luke <chrisy@flirble.org>
Diffstat (limited to 'vlib-api/vlibsocket/vl_socket_api_h.h')
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/*
 * Copyright (c) 2015 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.
 */
/*
 * ip/ip.h: ip generic (4 or 6) main
 *
 * Copyright (c) 2008 Eliot Dresselhaus
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#ifndef included_ip_main_h
#define included_ip_main_h

#include <vppinfra/hash.h>
#include <vppinfra/heap.h>	/* adjacency heap */
#include <vppinfra/ptclosure.h>

#include <vnet/vnet.h>

#include <vnet/ip/format.h>
#include <vnet/ip/ip_packet.h>
#include <vnet/ip/lookup.h>

#include <vnet/tcp/tcp_packet.h>
#include <vnet/udp/udp_packet.h>
#include <vnet/ip/icmp46_packet.h>

#include <vnet/ip/ip4.h>
#include <vnet/ip/ip4_error.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ip/icmp4.h>

#include <vnet/ip/ip6.h>
#include <vnet/ip/ip6_packet.h>
#include <vnet/ip/ip6_error.h>
#include <vnet/ip/icmp6.h>
#include <vnet/classify/vnet_classify.h>

/* Per protocol info. */
typedef struct
{
  /* Protocol name (also used as hash key). */
  u8 *name;

  /* Protocol number. */
  ip_protocol_t protocol;

  /* Format function for this IP protocol. */
  format_function_t *format_header;

  /* Parser for header. */
  unformat_function_t *unformat_header;

  /* Parser for per-protocol matches. */
  unformat_function_t *unformat_match;

  /* Parser for packet generator edits for this protocol. */
  unformat_function_t *unformat_pg_edit;
} ip_protocol_info_t;

/* Per TCP/UDP port info. */
typedef struct
{
  /* Port name (used as hash key). */
  u8 *name;

  /* UDP/TCP port number in network byte order. */
  u16 port;

  /* Port specific format function. */
  format_function_t *format_header;

  /* Parser for packet generator edits for this protocol. */
  unformat_function_t *unformat_pg_edit;
} tcp_udp_port_info_t;

typedef struct
{
  /* Per IP protocol info. */
  ip_protocol_info_t *protocol_infos;

  /* Protocol info index hashed by 8 bit IP protocol. */
  uword *protocol_info_by_protocol;

  /* Hash table mapping IP protocol name (see protocols.def)
     to protocol number. */
  uword *protocol_info_by_name;

  /* Per TCP/UDP port info. */
  tcp_udp_port_info_t *port_infos;

  /* Hash table from network-byte-order port to port info index. */
  uword *port_info_by_port;

  /* Hash table mapping TCP/UDP name to port info index. */
  uword *port_info_by_name;
} ip_main_t;

extern ip_main_t ip_main;

clib_error_t *ip_main_init (vlib_main_t * vm);

static inline ip_protocol_info_t *
ip_get_protocol_info (ip_main_t * im, u32 protocol)
{
  uword *p;

  p = hash_get (im->protocol_info_by_protocol, protocol);
  return p ? vec_elt_at_index (im->protocol_infos, p[0]) : 0;
}

static inline tcp_udp_port_info_t *
ip_get_tcp_udp_port_info (ip_main_t * im, u32 port)
{
  uword *p;

  p = hash_get (im->port_info_by_port, port);
  return p ? vec_elt_at_index (im->port_infos, p[0]) : 0;
}

always_inline ip_csum_t
ip_incremental_checksum_buffer (vlib_main_t * vm,
				vlib_buffer_t * first_buffer,
				u32 first_buffer_offset,
				u32 n_bytes_to_checksum, ip_csum_t sum)
{
  vlib_buffer_t *b = first_buffer;
  u32 n_bytes_left = n_bytes_to_checksum;
  ASSERT (b->current_length >= first_buffer_offset);
  void *h;
  u32 n;

  n = clib_min (n_bytes_left, b->current_length);
  h = vlib_buffer_get_current (b) + first_buffer_offset;
  sum = ip_incremental_checksum (sum, h, n);
  if (PREDICT_FALSE (b->flags & VLIB_BUFFER_NEXT_PRESENT))
    {
      while (1)
	{
	  n_bytes_left -= n;
	  if (n_bytes_left == 0)
	    break;
	  b = vlib_get_buffer (vm, b->next_buffer);
	  n = clib_min (n_bytes_left, b->current_length);
	  h = vlib_buffer_get_current (b);
	  sum = ip_incremental_checksum (sum, h, n);
	}
    }

  return sum;
}

void ip_del_all_interface_addresses (vlib_main_t * vm, u32 sw_if_index);

extern vlib_node_registration_t ip4_inacl_node;
extern vlib_node_registration_t ip6_inacl_node;

#endif /* included_ip_main_h */

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