2 * Copyright (c) 2015 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 * interface_output.c: interface output node
18 * Copyright (c) 2008 Eliot Dresselhaus
20 * Permission is hereby granted, free of charge, to any person obtaining
21 * a copy of this software and associated documentation files (the
22 * "Software"), to deal in the Software without restriction, including
23 * without limitation the rights to use, copy, modify, merge, publish,
24 * distribute, sublicense, and/or sell copies of the Software, and to
25 * permit persons to whom the Software is furnished to do so, subject to
26 * the following conditions:
28 * The above copyright notice and this permission notice shall be
29 * included in all copies or substantial portions of the Software.
31 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
32 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
33 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
34 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
35 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
36 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
37 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
40 #ifndef __INTERFACE_INLINES_H__
41 #define __INTERFACE_INLINES_H__
43 #include <vnet/vnet.h>
44 #include <vnet/gso/gso.h>
46 static_always_inline void
47 vnet_calc_checksums_inline (vlib_main_t * vm, vlib_buffer_t * b,
48 int is_ip4, int is_ip6, int with_gso)
55 ASSERT (!(is_ip4 && is_ip6));
59 gso_header_offset_t gho;
60 gho = vnet_gso_header_offset_parser (b, is_ip6);
61 ip4 = (ip4_header_t *)
62 (vlib_buffer_get_current (b) + gho.l3_hdr_offset);
63 ip6 = (ip6_header_t *)
64 (vlib_buffer_get_current (b) + gho.l3_hdr_offset);
65 th = (tcp_header_t *) (vlib_buffer_get_current (b) + gho.l4_hdr_offset);
66 uh = (udp_header_t *) (vlib_buffer_get_current (b) + gho.l4_hdr_offset);
70 ip4 = (ip4_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
71 ip6 = (ip6_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
72 th = (tcp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset);
73 uh = (udp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset);
78 if (b->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM)
79 ip4->checksum = ip4_header_checksum (ip4);
80 if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
83 th->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
85 if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)
88 uh->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
94 if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
98 ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
100 if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)
104 ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
108 b->flags &= ~VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
109 b->flags &= ~VNET_BUFFER_F_OFFLOAD_UDP_CKSUM;
110 b->flags &= ~VNET_BUFFER_F_OFFLOAD_IP_CKSUM;
116 * fd.io coding-style-patch-verification: ON
119 * eval: (c-set-style "gnu")