2 * Copyright (c) 2010 Broadcom Corporation
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 #include <packed_section_start.h>
22 #define IP_VER_OFFSET 0x0
23 #define IP_VER_MASK 0xf0
24 #define IP_VER_SHIFT 4
28 #define IP_VER(ip_body) \
29 ((((u8 *)(ip_body))[IP_VER_OFFSET] & IP_VER_MASK) >> IP_VER_SHIFT)
31 #define IPV4_TOS_OFFSET 1
33 #define IPV4_ADDR_LEN 4
35 #define IPV4_TOS(ipv4_body) (((u8 *)(ipv4_body))[IPV4_TOS_OFFSET])
37 #define IPV4_TOS_PREC_MASK 0xe0
38 #define IPV4_TOS_PREC_SHIFT 5
40 BWL_PRE_PACKED_STRUCT struct ipv4_addr {
41 u8 addr[IPV4_ADDR_LEN];
42 } BWL_POST_PACKED_STRUCT;
44 #define IPV6_TRAFFIC_CLASS(ipv6_body) \
45 (((((u8 *)(ipv6_body))[0] & 0x0f) << 4) | \
46 ((((u8 *)(ipv6_body))[1] & 0xf0) >> 4))
49 #define IP_TOS(ip_body) \
50 (IP_VER(ip_body) == IP_VER_4 ? IPV4_TOS(ip_body) : \
51 IP_VER(ip_body) == IP_VER_6 ? IPV6_TRAFFIC_CLASS(ip_body) : 0)
54 #include <packed_section_end.h>
56 #endif /* _bcmip_h_ */