19 #include <sys/types.h>
20 #include <netinet/in.h>
21 #include <netinet/ip.h>
44 } __attribute__((__packed__));
47 #define IPv4(a,b,c,d) ((uint32_t)(((a) & 0xff) << 24) | \
48 (((b) & 0xff) << 16) | \
49 (((c) & 0xff) << 8) | \
53 #define IPV4_MAX_PKT_LEN 65535
56 #define IPV4_HDR_IHL_MASK (0x0f)
61 #define IPV4_IHL_MULTIPLIER (4)
64 #define IPV4_HDR_DF_SHIFT 14
65 #define IPV4_HDR_MF_SHIFT 13
66 #define IPV4_HDR_FO_SHIFT 3
68 #define IPV4_HDR_DF_FLAG (1 << IPV4_HDR_DF_SHIFT)
69 #define IPV4_HDR_MF_FLAG (1 << IPV4_HDR_MF_SHIFT)
71 #define IPV4_HDR_OFFSET_MASK ((1 << IPV4_HDR_MF_SHIFT) - 1)
73 #define IPV4_HDR_OFFSET_UNITS 8
78 #define IPV4_ANY ((uint32_t)0x00000000)
79 #define IPV4_LOOPBACK ((uint32_t)0x7f000001)
80 #define IPV4_BROADCAST ((uint32_t)0xe0000000)
81 #define IPV4_ALLHOSTS_GROUP ((uint32_t)0xe0000001)
82 #define IPV4_ALLRTRS_GROUP ((uint32_t)0xe0000002)
83 #define IPV4_MAX_LOCAL_GROUP ((uint32_t)0xe00000ff)
88 #define IPV4_MIN_MCAST IPv4(224, 0, 0, 0)
89 #define IPV4_MAX_MCAST IPv4(239, 255, 255, 255)
91 #define IS_IPV4_MCAST(x) \
92 ((x) >= IPV4_MIN_MCAST && (x) <= IPV4_MAX_MCAST)
95 #define IPV4_MIN_IHL (0x5)
96 #define IPV4_VHL_DEF (IPVERSION | IPV4_MIN_IHL)
111 static inline uint32_t
112 __rte_raw_cksum(
const void *buf,
size_t len, uint32_t sum)
115 uintptr_t ptr = (uintptr_t)buf;
116 typedef uint16_t __attribute__((__may_alias__)) u16_p;
117 const u16_p *u16_buf = (
const u16_p *)ptr;
119 while (len >= (
sizeof(*u16_buf) * 4)) {
124 len -=
sizeof(*u16_buf) * 4;
127 while (len >=
sizeof(*u16_buf)) {
129 len -=
sizeof(*u16_buf);
136 *(uint8_t *)&left = *(
const uint8_t *)u16_buf;
152 static inline uint16_t
153 __rte_raw_cksum_reduce(uint32_t sum)
155 sum = ((sum & 0xffff0000) >> 16) + (sum & 0xffff);
156 sum = ((sum & 0xffff0000) >> 16) + (sum & 0xffff);
157 return (uint16_t)sum;
170 static inline uint16_t
175 sum = __rte_raw_cksum(buf, len, 0);
176 return __rte_raw_cksum_reduce(sum);
200 uint32_t seglen, done;
205 const char *, off), len);
214 for (seg = m; seg != NULL; seg = seg->
next) {
220 RTE_ASSERT(seg != NULL);
235 tmp = __rte_raw_cksum(buf, seglen, 0);
245 if (seglen > len - done)
249 *cksum = __rte_raw_cksum_reduce(sum);
263 static inline uint16_t
268 return (uint16_t)~cksum;
289 static inline uint16_t
292 struct ipv4_psd_header {
327 static inline uint16_t
331 uint32_t l3_len, l4_len;
334 if (l3_len <
sizeof(
struct ipv4_hdr))
337 l4_len = l3_len -
sizeof(
struct ipv4_hdr);
342 cksum = ((cksum & 0xffff0000) >> 16) + (cksum & 0xffff);
343 cksum = (~cksum) & 0xffff;
352 return (uint16_t)cksum;
365 } __attribute__((__packed__));
368 #define IPV6_HDR_FL_SHIFT 0
369 #define IPV6_HDR_TC_SHIFT 20
370 #define IPV6_HDR_FL_MASK ((1u << IPV6_HDR_TC_SHIFT) - 1)
371 #define IPV6_HDR_TC_MASK (0xff << IPV6_HDR_TC_SHIFT)
389 static inline uint16_t
408 sum = __rte_raw_cksum(&psd_hdr,
sizeof(psd_hdr), sum);
409 return __rte_raw_cksum_reduce(sum);
425 static inline uint16_t
436 cksum = ((cksum & 0xffff0000) >> 16) + (cksum & 0xffff);
437 cksum = (~cksum) & 0xffff;
446 return (uint16_t)cksum;