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>
45 static_always_inline void
46 vnet_calc_ip4_checksums (vlib_main_t *vm, vlib_buffer_t *b, ip4_header_t *ip4,
47 tcp_header_t *th, udp_header_t *uh, u32 oflags)
49 if (oflags & VNET_BUFFER_OFFLOAD_F_IP_CKSUM)
50 ip4->checksum = ip4_header_checksum (ip4);
51 if (oflags & VNET_BUFFER_OFFLOAD_F_TCP_CKSUM)
54 th->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
56 if (oflags & VNET_BUFFER_OFFLOAD_F_UDP_CKSUM)
59 uh->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
63 static_always_inline void
64 vnet_calc_ip6_checksums (vlib_main_t *vm, vlib_buffer_t *b, ip6_header_t *ip6,
65 tcp_header_t *th, udp_header_t *uh, u32 oflags)
68 if (oflags & VNET_BUFFER_OFFLOAD_F_TCP_CKSUM)
71 th->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
73 if (oflags & VNET_BUFFER_OFFLOAD_F_UDP_CKSUM)
76 uh->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
80 static_always_inline void
81 vnet_calc_checksums_inline (vlib_main_t * vm, vlib_buffer_t * b,
82 int is_ip4, int is_ip6)
88 u32 oflags = vnet_buffer2 (b)->oflags;
90 if (!(b->flags & VNET_BUFFER_F_OFFLOAD))
93 ASSERT (!(is_ip4 && is_ip6));
95 ip4 = (ip4_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
96 ip6 = (ip6_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
97 th = (tcp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset);
98 uh = (udp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset);
102 vnet_calc_ip4_checksums (vm, b, ip4, th, uh, oflags);
106 vnet_calc_ip6_checksums (vm, b, ip6, th, uh, oflags);
109 vnet_buffer_offload_flags_clear (b, (VNET_BUFFER_OFFLOAD_F_IP_CKSUM |
110 VNET_BUFFER_OFFLOAD_F_UDP_CKSUM |
111 VNET_BUFFER_OFFLOAD_F_TCP_CKSUM));
117 * fd.io coding-style-patch-verification: ON
120 * eval: (c-set-style "gnu")