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path: root/src/plugins/ikev2/ikev2_format.c
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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.
 */
#include <vnet/vnet.h>
#include <vnet/api_errno.h>
#include <vnet/ip/ip.h>
#include <vnet/interface.h>

#include <vnet/ipsec/ipsec.h>
#include <plugins/ikev2/ikev2.h>
#include <plugins/ikev2/ikev2_priv.h>

u8 *
format_ikev2_sa_transform (u8 * s, va_list * args)
{
  ikev2_sa_transform_t *tr = va_arg (*args, ikev2_sa_transform_t *);

  if (!tr)
    return s;

  if (tr->type >= IKEV2_TRANSFORM_NUM_TYPES)
    return s;

  s = format (s, "%U:", format_ikev2_transform_type, tr->type);

  switch (tr->type)
    {
    case IKEV2_TRANSFORM_TYPE_ENCR:
      s = format (s, "%U", format_ikev2_transform_encr_type, tr->encr_type);
      break;
    case IKEV2_TRANSFORM_TYPE_PRF:
      s = format (s, "%U", format_ikev2_transform_prf_type, tr->prf_type);
      break;
    case IKEV2_TRANSFORM_TYPE_INTEG:
      s = format (s, "%U", format_ikev2_transform_integ_type, tr->integ_type);
      break;
    case IKEV2_TRANSFORM_TYPE_DH:
      s = format (s, "%U", format_ikev2_transform_dh_type, tr->dh_type);
      break;
    case IKEV2_TRANSFORM_TYPE_ESN:
      s = format (s, "%U", format_ikev2_transform_esn_type, tr->esn_type);
      break;
    default:
      break;
    }

  if (tr->type == IKEV2_TRANSFORM_TYPE_ENCR &&
      tr->encr_type == IKEV2_TRANSFORM_ENCR_TYPE_AES_CBC && tr->key_len)
    s = format (s, "-%u", tr->key_len * 8);
  else if (vec_len (tr->attrs) == 4 && tr->attrs[0] == 0x80
	   && tr->attrs[1] == 0x0e)
    s = format (s, "-%u", tr->attrs[2] * 256 + tr->attrs[3]);
  else if (vec_len (tr->attrs))
    s = format (s, "(unknown attr %U)", format_hex_bytes,
		tr->attrs, vec_len (tr->attrs));

  return s;
}

#define MACRO_FORMAT(lc)                                \
u8 * format_ikev2_##lc (u8 * s, va_list * args)         \
{                                                       \
  u32 i = va_arg (*args, u32);                          \
  char * t = 0;                                         \
  switch (i) {                                          \
        foreach_ikev2_##lc                              \
      default:                                          \
        return format (s, "unknown (%u)", i);           \
    }                                                   \
  s = format (s, "%s", t);                              \
  return s;                                             \
}

#define MACRO_UNFORMAT(lc)                              \
uword                                                   \
unformat_ikev2_##lc (unformat_input_t * input,          \
                     va_list * args)                    \
{                                                       \
  u32 * r = va_arg (*args, u32 *);                      \
  if (0) ;                                              \
  foreach_ikev2_##lc                                    \
  else                                                  \
    return 0;                                           \
  return 1;                                             \
}

#define _(v,f,str) case IKEV2_AUTH_METHOD_##f: t = str; break;
MACRO_FORMAT (auth_method)
#undef _
#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_AUTH_METHOD_##f;
  MACRO_UNFORMAT (auth_method)
#undef _
#define _(v,f,str) case IKEV2_TRANSFORM_TYPE_##f: t = str; break;
  MACRO_FORMAT (transform_type)
#undef _
#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_TYPE_##f;
  MACRO_UNFORMAT (transform_type)
#undef _
#define _(v,f) case IKEV2_NOTIFY_MSG_##f: t = #f; break;
  MACRO_FORMAT (notify_msg_type)
#undef _
#define _(v,f,str) case IKEV2_ID_TYPE_##f: t = str; break;
  MACRO_FORMAT (id_type)
#undef _
#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_ID_TYPE_##f;
  MACRO_UNFORMAT (id_type)
#undef _
#define _(v,f,str) case IKEV2_TRANSFORM_ENCR_TYPE_##f: t = str; break;
  MACRO_FORMAT (transform_encr_type)
#undef _
#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_ENCR_TYPE_##f;
  MACRO_UNFORMAT (transform_encr_type)
#undef _
#define _(v,f,str) case IKEV2_TRANSFORM_PRF_TYPE_##f: t = str; break;
  MACRO_FORMAT (transform_prf_type)
#undef _
#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_PRF_TYPE_##f;
  MACRO_UNFORMAT (transform_prf_type)
#undef _
#define _(v,f,str) case IKEV2_TRANSFORM_INTEG_TYPE_##f: t = str; break;
  MACRO_FORMAT (transform_integ_type)
#undef _
#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_INTEG_TYPE_##f;
  MACRO_UNFORMAT (transform_integ_type)
#undef _
#define _(v,f,str) case IKEV2_TRANSFORM_DH_TYPE_##f: t = str; break;
  MACRO_FORMAT (transform_dh_type)
#undef _
#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_DH_TYPE_##f;
  MACRO_UNFORMAT (transform_dh_type)
#undef _
#define _(v,f,str) case IKEV2_TRANSFORM_ESN_TYPE_##f: t = str; break;
  MACRO_FORMAT (transform_esn_type)
#undef _
#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_ESN_TYPE_##f;
  MACRO_UNFORMAT (transform_esn_type)
#undef _
/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */
>[0]), LOAD); CLIB_PREFETCH (b3->data, sizeof (h1[0]), LOAD); } bi0 = from[0]; bi1 = from[1]; to_next[0] = bi0; to_next[1] = bi1; from += 2; to_next += 2; n_left_to_next -= 2; n_left_from -= 2; b0 = vlib_get_buffer (vm, bi0); b1 = vlib_get_buffer (vm, bi1); h0 = (void *) (b0->data + b0->current_data); h1 = (void *) (b1->data + b1->current_data); len0 = llc_header_length (h0); len1 = llc_header_length (h1); b0->current_data += len0; b1->current_data += len1; b0->current_length -= len0; b1->current_length -= len1; next0 = lm->input_next_by_protocol[h0->dst_sap]; next1 = lm->input_next_by_protocol[h1->dst_sap]; b0->error = node->errors[next0 == LLC_INPUT_NEXT_DROP ? LLC_ERROR_UNKNOWN_PROTOCOL : LLC_ERROR_NONE]; b1->error = node->errors[next1 == LLC_INPUT_NEXT_DROP ? LLC_ERROR_UNKNOWN_PROTOCOL : LLC_ERROR_NONE]; enqueue_code = (next0 != next_index) + 2 * (next1 != next_index); if (PREDICT_FALSE (enqueue_code != 0)) { switch (enqueue_code) { case 1: /* A B A */ to_next[-2] = bi1; to_next -= 1; n_left_to_next += 1; vlib_set_next_frame_buffer (vm, node, next0, bi0); break; case 2: /* A A B */ to_next -= 1; n_left_to_next += 1; vlib_set_next_frame_buffer (vm, node, next1, bi1); break; case 3: /* A B B or A B C */ to_next -= 2; n_left_to_next += 2; vlib_set_next_frame_buffer (vm, node, next0, bi0); vlib_set_next_frame_buffer (vm, node, next1, bi1); if (next0 == next1) { vlib_put_next_frame (vm, node, next_index, n_left_to_next); next_index = next1; vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); } } } } while (n_left_from > 0 && n_left_to_next > 0) { u32 bi0; vlib_buffer_t *b0; llc_header_t *h0; u8 next0, len0; bi0 = from[0]; to_next[0] = bi0; from += 1; to_next += 1; n_left_from -= 1; n_left_to_next -= 1; b0 = vlib_get_buffer (vm, bi0); h0 = (void *) (b0->data + b0->current_data); len0 = llc_header_length (h0); b0->current_data += len0; b0->current_length -= len0; next0 = lm->input_next_by_protocol[h0->dst_sap]; b0->error = node->errors[next0 == LLC_INPUT_NEXT_DROP ? LLC_ERROR_UNKNOWN_PROTOCOL : LLC_ERROR_NONE]; /* Sent packet to wrong next? */ if (PREDICT_FALSE (next0 != next_index)) { /* Return old frame; remove incorrectly enqueued packet. */ vlib_put_next_frame (vm, node, next_index, n_left_to_next + 1); /* Send to correct next. */ next_index = next0; vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); to_next[0] = bi0; to_next += 1; n_left_to_next -= 1; } } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } return from_frame->n_vectors; } static char *llc_error_strings[] = { #define _(f,s) s, foreach_llc_error #undef _ }; /* *INDENT-OFF* */ VLIB_REGISTER_NODE (llc_input_node) = { .function = llc_input, .name = "llc-input", /* Takes a vector of packets. */ .vector_size = sizeof (u32), .n_errors = LLC_N_ERROR, .error_strings = llc_error_strings, .n_next_nodes = LLC_INPUT_N_NEXT, .next_nodes = { #define _(s,n) [LLC_INPUT_NEXT_##s] = n, foreach_llc_input_next #undef _ }, .format_buffer = format_llc_header_with_length, .format_trace = format_llc_input_trace, .unformat_buffer = unformat_llc_header, }; /* *INDENT-ON* */ static clib_error_t * llc_input_init (vlib_main_t * vm) { llc_main_t *lm = &llc_main; { clib_error_t *error = vlib_call_init_function (vm, llc_init); if (error) clib_error_report (error); } llc_setup_node (vm, llc_input_node.index); { int i; for (i = 0; i < ARRAY_LEN (lm->input_next_by_protocol); i++) lm->input_next_by_protocol[i] = LLC_INPUT_NEXT_DROP; } return 0; } VLIB_INIT_FUNCTION (llc_input_init); void llc_register_input_protocol (vlib_main_t * vm, llc_protocol_t protocol, u32 node_index) { llc_main_t *lm = &llc_main; llc_protocol_info_t *pi; { clib_error_t *error = vlib_call_init_function (vm, llc_input_init); if (error) clib_error_report (error); /* Otherwise, osi_input_init will wipe out e.g. the snap init */ error = vlib_call_init_function (vm, osi_input_init); if (error) clib_error_report (error); } pi = llc_get_protocol_info (lm, protocol); pi->node_index = node_index; pi->next_index = vlib_node_add_next (vm, llc_input_node.index, node_index); lm->input_next_by_protocol[protocol] = pi->next_index; } /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */