+++ /dev/null
-/*
- * 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.
- */
-/*
- * ppp.c: ppp support
- *
- * Copyright (c) 2010 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.
- */
-
-#include <vnet/vnet.h>
-#include <vnet/ppp/ppp.h>
-
-/* Global main structure. */
-ppp_main_t ppp_main;
-
-u8 *
-format_ppp_protocol (u8 * s, va_list * args)
-{
- ppp_protocol_t p = va_arg (*args, u32);
- ppp_main_t *pm = &ppp_main;
- ppp_protocol_info_t *pi = ppp_get_protocol_info (pm, p);
-
- if (pi)
- s = format (s, "%s", pi->name);
- else
- s = format (s, "0x%04x", p);
-
- return s;
-}
-
-u8 *
-format_ppp_header_with_length (u8 * s, va_list * args)
-{
- ppp_main_t *pm = &ppp_main;
- ppp_header_t *h = va_arg (*args, ppp_header_t *);
- u32 max_header_bytes = va_arg (*args, u32);
- ppp_protocol_t p = clib_net_to_host_u16 (h->protocol);
- uword indent, header_bytes;
-
- header_bytes = sizeof (h[0]);
- if (max_header_bytes != 0 && header_bytes > max_header_bytes)
- return format (s, "ppp header truncated");
-
- indent = format_get_indent (s);
-
- s = format (s, "PPP %U", format_ppp_protocol, p);
-
- if (h->address != 0xff)
- s = format (s, ", address 0x%02x", h->address);
- if (h->control != 0x03)
- s = format (s, ", control 0x%02x", h->control);
-
- if (max_header_bytes != 0 && header_bytes > max_header_bytes)
- {
- ppp_protocol_info_t *pi = ppp_get_protocol_info (pm, p);
- vlib_node_t *node = vlib_get_node (pm->vlib_main, pi->node_index);
- if (node->format_buffer)
- s = format (s, "\n%U%U",
- format_white_space, indent,
- node->format_buffer, (void *) (h + 1),
- max_header_bytes - header_bytes);
- }
-
- return s;
-}
-
-u8 *
-format_ppp_header (u8 * s, va_list * args)
-{
- ppp_header_t *h = va_arg (*args, ppp_header_t *);
- return format (s, "%U", format_ppp_header_with_length, h, 0);
-}
-
-/* Returns ppp protocol as an int in host byte order. */
-uword
-unformat_ppp_protocol_host_byte_order (unformat_input_t * input,
- va_list * args)
-{
- u16 *result = va_arg (*args, u16 *);
- ppp_main_t *pm = &ppp_main;
- int p, i;
-
- /* Numeric type. */
- if (unformat (input, "0x%x", &p) || unformat (input, "%d", &p))
- {
- if (p >= (1 << 16))
- return 0;
- *result = p;
- return 1;
- }
-
- /* Named type. */
- if (unformat_user (input, unformat_vlib_number_by_name,
- pm->protocol_info_by_name, &i))
- {
- ppp_protocol_info_t *pi = vec_elt_at_index (pm->protocol_infos, i);
- *result = pi->protocol;
- return 1;
- }
-
- return 0;
-}
-
-uword
-unformat_ppp_protocol_net_byte_order (unformat_input_t * input,
- va_list * args)
-{
- u16 *result = va_arg (*args, u16 *);
- if (!unformat_user (input, unformat_ppp_protocol_host_byte_order, result))
- return 0;
- *result = clib_host_to_net_u16 ((u16) * result);
- return 1;
-}
-
-uword
-unformat_ppp_header (unformat_input_t * input, va_list * args)
-{
- u8 **result = va_arg (*args, u8 **);
- ppp_header_t _h, *h = &_h;
- u16 p;
-
- if (!unformat (input, "%U", unformat_ppp_protocol_host_byte_order, &p))
- return 0;
-
- h->address = 0xff;
- h->control = 0x03;
- h->protocol = clib_host_to_net_u16 (p);
-
- /* Add header to result. */
- {
- void *p;
- u32 n_bytes = sizeof (h[0]);
-
- vec_add2 (*result, p, n_bytes);
- clib_memcpy (p, h, n_bytes);
- }
-
- return 1;
-}
-
-static u8 *
-ppp_build_rewrite (vnet_main_t * vnm,
- u32 sw_if_index,
- vnet_link_t link_type, const void *dst_hw_address)
-{
- ppp_header_t *h;
- u8 *rewrite = NULL;
- ppp_protocol_t protocol;
-
- switch (link_type)
- {
-#define _(a,b) case VNET_LINK_##a: protocol = PPP_PROTOCOL_##b; break
- _(IP4, ip4);
- _(IP6, ip6);
- _(MPLS, mpls_unicast);
-#undef _
- default:
- return (NULL);
- }
-
- vec_validate (rewrite, sizeof (*h) - 1);
- h = (ppp_header_t *) rewrite;
- h->address = 0xff;
- h->control = 0x03;
- h->protocol = clib_host_to_net_u16 (protocol);
-
- return (rewrite);
-}
-
-/* *INDENT-OFF* */
-VNET_HW_INTERFACE_CLASS (ppp_hw_interface_class) = {
- .name = "PPP",
- .format_header = format_ppp_header_with_length,
- .unformat_header = unformat_ppp_header,
- .build_rewrite = ppp_build_rewrite,
- .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P,
-};
-/* *INDENT-ON* */
-
-static void
-add_protocol (ppp_main_t * pm, ppp_protocol_t protocol, char *protocol_name)
-{
- ppp_protocol_info_t *pi;
- u32 i;
-
- vec_add2 (pm->protocol_infos, pi, 1);
- i = pi - pm->protocol_infos;
-
- pi->name = protocol_name;
- pi->protocol = protocol;
- pi->next_index = pi->node_index = ~0;
-
- hash_set (pm->protocol_info_by_protocol, protocol, i);
- hash_set_mem (pm->protocol_info_by_name, pi->name, i);
-}
-
-static clib_error_t *
-ppp_init (vlib_main_t * vm)
-{
- ppp_main_t *pm = &ppp_main;
-
- memset (pm, 0, sizeof (pm[0]));
- pm->vlib_main = vm;
-
- pm->protocol_info_by_name = hash_create_string (0, sizeof (uword));
- pm->protocol_info_by_protocol = hash_create (0, sizeof (uword));
-
-#define _(n,s) add_protocol (pm, PPP_PROTOCOL_##s, #s);
- foreach_ppp_protocol;
-#undef _
-
- return vlib_call_init_function (vm, ppp_input_init);
-}
-
-VLIB_INIT_FUNCTION (ppp_init);
-
-ppp_main_t *
-ppp_get_main (vlib_main_t * vm)
-{
- vlib_call_init_function (vm, ppp_init);
- return &ppp_main;
-}
-
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff