diff options
Diffstat (limited to 'vnet/vnet/ip/tcp_pg.c')
-rw-r--r-- | vnet/vnet/ip/tcp_pg.c | 224 |
1 files changed, 0 insertions, 224 deletions
diff --git a/vnet/vnet/ip/tcp_pg.c b/vnet/vnet/ip/tcp_pg.c deleted file mode 100644 index 122592d1..00000000 --- a/vnet/vnet/ip/tcp_pg.c +++ /dev/null @@ -1,224 +0,0 @@ -/* - * 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/tcp_pg: TCP packet-generator interface - * - * 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. - */ - -#include <vnet/ip/ip.h> -#include <vnet/pg/pg.h> - -static void -tcp_pg_edit_function (pg_main_t * pg, - pg_stream_t * s, - pg_edit_group_t * g, - u32 * packets, - u32 n_packets) -{ - vlib_main_t * vm = pg->vlib_main; - u32 ip_offset, tcp_offset; - - tcp_offset = g->start_byte_offset; - ip_offset = (g-1)->start_byte_offset; - - while (n_packets >= 1) - { - vlib_buffer_t * p0; - ip4_header_t * ip0; - tcp_header_t * tcp0; - ip_csum_t sum0; - u32 tcp_len0; - - p0 = vlib_get_buffer (vm, packets[0]); - n_packets -= 1; - packets += 1; - - ASSERT (p0->current_data == 0); - ip0 = (void *) (p0->data + ip_offset); - tcp0 = (void *) (p0->data + tcp_offset); - tcp_len0 = clib_net_to_host_u16 (ip0->length) - sizeof (ip0[0]); - - /* Initialize checksum with header. */ - if (BITS (sum0) == 32) - { - sum0 = clib_mem_unaligned (&ip0->src_address, u32); - sum0 = ip_csum_with_carry (sum0, clib_mem_unaligned (&ip0->dst_address, u32)); - } - else - sum0 = clib_mem_unaligned (&ip0->src_address, u64); - - sum0 = ip_csum_with_carry - (sum0, clib_host_to_net_u32 (tcp_len0 + (ip0->protocol << 16))); - - /* Invalidate possibly old checksum. */ - tcp0->checksum = 0; - - sum0 = ip_incremental_checksum_buffer (vm, p0, tcp_offset, tcp_len0, sum0); - - tcp0->checksum = ~ ip_csum_fold (sum0); - } -} - -typedef struct { - struct { pg_edit_t src, dst; } ports; - pg_edit_t seq_number, ack_number; - pg_edit_t tcp_header_u32s; -#define _(f) pg_edit_t f##_flag; - foreach_tcp_flag -#undef _ - pg_edit_t window; - pg_edit_t checksum; - pg_edit_t urgent_pointer; -} pg_tcp_header_t; - -static inline void -pg_tcp_header_init (pg_tcp_header_t * p) -{ - /* Initialize fields that are not bit fields in the IP header. */ -#define _(f) pg_edit_init (&p->f, tcp_header_t, f); - _ (ports.src); - _ (ports.dst); - _ (seq_number); - _ (ack_number); - _ (window); - _ (checksum); - _ (urgent_pointer); -#undef _ - - /* Initialize bit fields. */ -#define _(f) \ - pg_edit_init_bitfield (&p->f##_flag, tcp_header_t, \ - flags, \ - TCP_FLAG_BIT_##f, 1); - - foreach_tcp_flag -#undef _ - - pg_edit_init_bitfield (&p->tcp_header_u32s, tcp_header_t, - tcp_header_u32s_and_reserved, - 4, 4); -} - -uword -unformat_pg_tcp_header (unformat_input_t * input, va_list * args) -{ - pg_stream_t * s = va_arg (*args, pg_stream_t *); - pg_tcp_header_t * p; - u32 group_index; - - p = pg_create_edit_group (s, sizeof (p[0]), sizeof (tcp_header_t), - &group_index); - pg_tcp_header_init (p); - - /* Defaults. */ - pg_edit_set_fixed (&p->seq_number, 0); - pg_edit_set_fixed (&p->ack_number, 0); - - pg_edit_set_fixed (&p->tcp_header_u32s, sizeof (tcp_header_t) / sizeof (u32)); - - pg_edit_set_fixed (&p->window, 4096); - pg_edit_set_fixed (&p->urgent_pointer, 0); - -#define _(f) pg_edit_set_fixed (&p->f##_flag, 0); - foreach_tcp_flag -#undef _ - - p->checksum.type = PG_EDIT_UNSPECIFIED; - - if (! unformat (input, "TCP: %U -> %U", - unformat_pg_edit, - unformat_tcp_udp_port, &p->ports.src, - unformat_pg_edit, - unformat_tcp_udp_port, &p->ports.dst)) - goto error; - - /* Parse options. */ - while (1) - { - if (unformat (input, "window %U", - unformat_pg_edit, - unformat_pg_number, &p->window)) - ; - - else if (unformat (input, "checksum %U", - unformat_pg_edit, - unformat_pg_number, &p->checksum)) - ; - - /* Flags. */ -#define _(f) else if (unformat (input, #f)) pg_edit_set_fixed (&p->f##_flag, 1); - foreach_tcp_flag -#undef _ - - /* 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->ports.dst.type == PG_EDIT_FIXED) - { - dst_port = pg_edit_get_value (&p->ports.dst, 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; - - if (p->checksum.type == PG_EDIT_UNSPECIFIED) - { - pg_edit_group_t * g = pg_stream_get_group (s, group_index); - g->edit_function = tcp_pg_edit_function; - g->edit_function_opaque = 0; - } - - return 1; - } - - error: - /* Free up any edits we may have added. */ - pg_free_edit_group (s); - return 0; -} - |