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Neale Ranns25edf142019-03-22 08:12:48 +00001/*
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:
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
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.
14 */
15/*
16 * interface_output.c: interface output node
17 *
18 * Copyright (c) 2008 Eliot Dresselhaus
19 *
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:
27 *
28 * The above copyright notice and this permission notice shall be
29 * included in all copies or substantial portions of the Software.
30 *
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.
38 */
39
40#ifndef __INTERFACE_INLINES_H__
41#define __INTERFACE_INLINES_H__
42
43#include <vnet/vnet.h>
Mohsin Kazmi0b042092020-04-17 16:50:56 +000044#include <vnet/gso/hdr_offset_parser.h>
45
46static_always_inline void
Mohsin Kazmi68095382021-02-10 11:26:24 +010047vnet_calc_ip4_checksums (vlib_main_t *vm, vlib_buffer_t *b, ip4_header_t *ip4,
48 tcp_header_t *th, udp_header_t *uh, u32 oflags)
Mohsin Kazmi0b042092020-04-17 16:50:56 +000049{
Mohsin Kazmi68095382021-02-10 11:26:24 +010050 if (oflags & VNET_BUFFER_OFFLOAD_F_IP_CKSUM)
Mohsin Kazmi0b042092020-04-17 16:50:56 +000051 ip4->checksum = ip4_header_checksum (ip4);
Mohsin Kazmi68095382021-02-10 11:26:24 +010052 if (oflags & VNET_BUFFER_OFFLOAD_F_TCP_CKSUM)
Mohsin Kazmi0b042092020-04-17 16:50:56 +000053 {
54 th->checksum = 0;
55 th->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
56 }
Mohsin Kazmi68095382021-02-10 11:26:24 +010057 if (oflags & VNET_BUFFER_OFFLOAD_F_UDP_CKSUM)
Mohsin Kazmi0b042092020-04-17 16:50:56 +000058 {
59 uh->checksum = 0;
60 uh->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
61 }
62}
63
64static_always_inline void
Mohsin Kazmi68095382021-02-10 11:26:24 +010065vnet_calc_ip6_checksums (vlib_main_t *vm, vlib_buffer_t *b, ip6_header_t *ip6,
66 tcp_header_t *th, udp_header_t *uh, u32 oflags)
Mohsin Kazmi0b042092020-04-17 16:50:56 +000067{
68 int bogus;
Mohsin Kazmi68095382021-02-10 11:26:24 +010069 if (oflags & VNET_BUFFER_OFFLOAD_F_TCP_CKSUM)
Mohsin Kazmi0b042092020-04-17 16:50:56 +000070 {
71 th->checksum = 0;
72 th->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
73 }
Mohsin Kazmi68095382021-02-10 11:26:24 +010074 if (oflags & VNET_BUFFER_OFFLOAD_F_UDP_CKSUM)
Mohsin Kazmi0b042092020-04-17 16:50:56 +000075 {
76 uh->checksum = 0;
77 uh->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
78 }
79}
Neale Ranns25edf142019-03-22 08:12:48 +000080
81static_always_inline void
Dave Barach1bd2c012020-04-12 08:31:39 -040082vnet_calc_checksums_inline (vlib_main_t * vm, vlib_buffer_t * b,
Vladimir Isaev698eb872020-05-21 16:34:17 +030083 int is_ip4, int is_ip6)
Neale Ranns25edf142019-03-22 08:12:48 +000084{
85 ip4_header_t *ip4;
86 ip6_header_t *ip6;
87 tcp_header_t *th;
88 udp_header_t *uh;
Mohsin Kazmi68095382021-02-10 11:26:24 +010089 u32 oflags = vnet_buffer2 (b)->oflags;
Neale Ranns25edf142019-03-22 08:12:48 +000090
Vladimir Isaev698eb872020-05-21 16:34:17 +030091 ASSERT (!(is_ip4 && is_ip6));
92
93 ip4 = (ip4_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
94 ip6 = (ip6_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
95 th = (tcp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset);
96 uh = (udp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset);
97
98 if (is_ip4)
Dave Barach1bd2c012020-04-12 08:31:39 -040099 {
Mohsin Kazmi68095382021-02-10 11:26:24 +0100100 vnet_calc_ip4_checksums (vm, b, ip4, th, uh, oflags);
Dave Barach1bd2c012020-04-12 08:31:39 -0400101 }
Vladimir Isaev698eb872020-05-21 16:34:17 +0300102 else if (is_ip6)
Dave Barach1bd2c012020-04-12 08:31:39 -0400103 {
Mohsin Kazmi68095382021-02-10 11:26:24 +0100104 vnet_calc_ip6_checksums (vm, b, ip6, th, uh, oflags);
Neale Ranns25edf142019-03-22 08:12:48 +0000105 }
Vladimir Isaev698eb872020-05-21 16:34:17 +0300106
Mohsin Kazmi68095382021-02-10 11:26:24 +0100107 vnet_buffer_offload_flags_clear (b, (VNET_BUFFER_OFFLOAD_F_IP_CKSUM |
108 VNET_BUFFER_OFFLOAD_F_UDP_CKSUM |
109 VNET_BUFFER_OFFLOAD_F_TCP_CKSUM));
Neale Ranns25edf142019-03-22 08:12:48 +0000110}
111
112#endif
113
114/*
115 * fd.io coding-style-patch-verification: ON
116 *
117 * Local Variables:
118 * eval: (c-set-style "gnu")
119 * End:
120 */