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/*
 * Copyright (c) 2018 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 <vat/vat.h>
#include <vlibapi/api.h>
#include <vlibmemory/api.h>
#include <vppinfra/error.h>
#include <vnet/format_fns.h>
#include <stn/stn.h>

#define __plugin_msg_base stn_test_main.msg_id_base
#include <vlibapi/vat_helper_macros.h>

/* Declare message IDs */
#include <stn/stn.api_enum.h>
#include <stn/stn.api_types.h>
#include <vlibmemory/vlib.api_types.h>

typedef struct
{
  /* API message ID base */
  u16 msg_id_base;
  u32 ping_id;
  vat_main_t *vat_main;
} stn_test_main_t;

stn_test_main_t stn_test_main;

static int
api_stn_add_del_rule (vat_main_t * vam)
{
  // Not yet implemented
  return -99;
}

static int
api_stn_rules_dump (vat_main_t * vam)
{
  stn_test_main_t *sm = &stn_test_main;
  vl_api_stn_rules_dump_t *mp;
  vl_api_control_ping_t *mp_ping;
  int ret;

  if (!vam->json_output)
    {
      print (vam->ofp, "%=20s", "STN Rules");
    }

  M (STN_RULES_DUMP, mp);
  /* send it... */
  S (mp);

  /* Use a control ping for synchronization */
  mp_ping = vl_msg_api_alloc_as_if_client (sizeof (*mp_ping));
  mp_ping->_vl_msg_id = htons (sm->ping_id);
  mp_ping->client_index = vam->my_client_index;

  fformat (vam->ofp, "Sending ping id=%d\n", sm->ping_id);

  vam->result_ready = 0;
  S (mp_ping);

  /* Wait for a reply... */
  W (ret);
  return ret;
}

static void
vl_api_stn_rules_details_t_handler (vl_api_stn_rules_details_t * mp)
{
  vat_main_t *vam = stn_test_main.vat_main;
  fformat (vam->ofp, "addr: %U sw_if_index: %u\n",
	   format_ip46_address,
	   mp->ip_address, clib_net_to_host_u32 (mp->sw_if_index));
}

#include <stn/stn.api_test.c>

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */
class="p">(g - 1)->start_byte_offset; while (n_packets >= 1) { vlib_buffer_t *p0; ip4_header_t *ip0; udp_header_t *udp0; u32 udp_len0; p0 = vlib_get_buffer (vm, packets[0]); n_packets -= 1; packets += 1; ip0 = (void *) (p0->data + ip_offset); udp0 = (void *) (p0->data + udp_offset); udp_len0 = clib_net_to_host_u16 (ip0->length) - sizeof (ip0[0]); if (flags & UDP_PG_EDIT_LENGTH) udp0->length = clib_net_to_host_u16 (vlib_buffer_length_in_chain (vm, p0) - ip_offset); /* Initialize checksum with header. */ if (flags & UDP_PG_EDIT_CHECKSUM) { ip_csum_t sum0; sum0 = clib_mem_unaligned (&ip0->src_address, u64); sum0 = ip_csum_with_carry (sum0, clib_host_to_net_u32 (udp_len0 + (ip0->protocol << 16))); /* Invalidate possibly old checksum. */ udp0->checksum = 0; sum0 = ip_incremental_checksum_buffer (vm, p0, udp_offset, udp_len0, sum0); sum0 = ~ip_csum_fold (sum0); /* Zero checksum means checksumming disabled. */ sum0 = sum0 != 0 ? sum0 : 0xffff; udp0->checksum = sum0; } } } static void udp_pg_edit_function (pg_main_t * pg, pg_stream_t * s, pg_edit_group_t * g, u32 * packets, u32 n_packets) { switch (g->edit_function_opaque) { case UDP_PG_EDIT_LENGTH: udp_pg_edit_function_inline (pg, s, g, packets, n_packets, UDP_PG_EDIT_LENGTH); break; case UDP_PG_EDIT_CHECKSUM: udp_pg_edit_function_inline (pg, s, g, packets, n_packets, UDP_PG_EDIT_CHECKSUM); break; case UDP_PG_EDIT_CHECKSUM | UDP_PG_EDIT_LENGTH: udp_pg_edit_function_inline (pg, s, g, packets, n_packets, UDP_PG_EDIT_CHECKSUM | UDP_PG_EDIT_LENGTH); break; default: ASSERT (0); break; } } typedef struct { pg_edit_t src_port, dst_port; pg_edit_t length; pg_edit_t checksum; } pg_udp_header_t; static inline void pg_udp_header_init (pg_udp_header_t * p) { /* Initialize fields that are not bit fields in the IP header. */ #define _(f) pg_edit_init (&p->f, udp_header_t, f); _(src_port); _(dst_port); _(length); _(checksum); #undef _ } uword unformat_pg_udp_header (unformat_input_t * input, va_list * args) { pg_stream_t *s = va_arg (*args, pg_stream_t *); pg_udp_header_t *p; u32 group_index; p = pg_create_edit_group (s, sizeof (p[0]), sizeof (udp_header_t), &group_index); pg_udp_header_init (p); /* Defaults. */ p->checksum.type = PG_EDIT_UNSPECIFIED; p->length.type = PG_EDIT_UNSPECIFIED; if (!unformat (input, "UDP: %U -> %U", unformat_pg_edit, unformat_tcp_udp_port, &p->src_port, unformat_pg_edit, unformat_tcp_udp_port, &p->dst_port)) goto error; /* Parse options. */ while (1) { if (unformat (input, "length %U", unformat_pg_edit, unformat_pg_number, &p->length)) ; else if (unformat (input, "checksum %U", unformat_pg_edit, unformat_pg_number, &p->checksum)) ; /* Can't parse input: try next protocol level. */ else break; } { ip_main_t *im = &ip_main; u16 dst_port; tcp_udp_port_info_t *pi; pi = 0; if (p->dst_port.type == PG_EDIT_FIXED) { dst_port = pg_edit_get_value (&p->dst_port, PG_EDIT_LO); pi = ip_get_tcp_udp_port_info (im, dst_port); } if (pi && pi->unformat_pg_edit && unformat_user (input, pi->unformat_pg_edit, s)) ; else if (!unformat_user (input, unformat_pg_payload, s)) goto error; p = pg_get_edit_group (s, group_index); if (p->checksum.type == PG_EDIT_UNSPECIFIED || p->length.type == PG_EDIT_UNSPECIFIED) { pg_edit_group_t *g = pg_stream_get_group (s, group_index); g->edit_function = udp_pg_edit_function; g->edit_function_opaque = 0; if (p->checksum.type == PG_EDIT_UNSPECIFIED) g->edit_function_opaque |= UDP_PG_EDIT_CHECKSUM; if (p->length.type == PG_EDIT_UNSPECIFIED) g->edit_function_opaque |= UDP_PG_EDIT_LENGTH; } return 1; } error: /* Free up any edits we may have added. */ pg_free_edit_group (s); return 0; } /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */