19 #include <sys/types.h>
20 #include <netinet/in.h>
21 #include <netinet/ip.h>
44 } __attribute__((__packed__));
47 #define RTE_IPV4(a, b, c, d) ((uint32_t)(((a) & 0xff) << 24) | \
48 (((b) & 0xff) << 16) | \
49 (((c) & 0xff) << 8) | \
53 #define RTE_IPV4_MAX_PKT_LEN 65535
56 #define RTE_IPV4_HDR_IHL_MASK (0x0f)
61 #define RTE_IPV4_IHL_MULTIPLIER (4)
64 #define RTE_IPV4_HDR_DSCP_MASK (0xfc)
65 #define RTE_IPV4_HDR_ECN_MASK (0x03)
66 #define RTE_IPV4_HDR_ECN_CE RTE_IPV4_HDR_ECN_MASK
69 #define RTE_IPV4_HDR_DF_SHIFT 14
70 #define RTE_IPV4_HDR_MF_SHIFT 13
71 #define RTE_IPV4_HDR_FO_SHIFT 3
73 #define RTE_IPV4_HDR_DF_FLAG (1 << RTE_IPV4_HDR_DF_SHIFT)
74 #define RTE_IPV4_HDR_MF_FLAG (1 << RTE_IPV4_HDR_MF_SHIFT)
76 #define RTE_IPV4_HDR_OFFSET_MASK ((1 << RTE_IPV4_HDR_MF_SHIFT) - 1)
78 #define RTE_IPV4_HDR_OFFSET_UNITS 8
83 #define RTE_IPV4_ANY ((uint32_t)0x00000000)
84 #define RTE_IPV4_LOOPBACK ((uint32_t)0x7f000001)
85 #define RTE_IPV4_BROADCAST ((uint32_t)0xe0000000)
86 #define RTE_IPV4_ALLHOSTS_GROUP ((uint32_t)0xe0000001)
87 #define RTE_IPV4_ALLRTRS_GROUP ((uint32_t)0xe0000002)
88 #define RTE_IPV4_MAX_LOCAL_GROUP ((uint32_t)0xe00000ff)
93 #define RTE_IPV4_MIN_MCAST \
94 RTE_IPV4(224, 0, 0, 0)
95 #define RTE_IPV4_MAX_MCAST \
96 RTE_IPV4(239, 255, 255, 255)
98 #define RTE_IS_IPV4_MCAST(x) \
99 ((x) >= RTE_IPV4_MIN_MCAST && (x) <= RTE_IPV4_MAX_MCAST)
103 #define RTE_IPV4_MIN_IHL (0x5)
104 #define RTE_IPV4_VHL_DEF ((IPVERSION << 4) | RTE_IPV4_MIN_IHL)
119 static inline uint32_t
120 __rte_raw_cksum(
const void *buf,
size_t len, uint32_t sum)
123 uintptr_t ptr = (uintptr_t)buf;
124 typedef uint16_t __attribute__((__may_alias__)) u16_p;
125 const u16_p *u16_buf = (
const u16_p *)ptr;
127 while (len >= (
sizeof(*u16_buf) * 4)) {
132 len -=
sizeof(*u16_buf) * 4;
135 while (len >=
sizeof(*u16_buf)) {
137 len -=
sizeof(*u16_buf);
144 *(uint8_t *)&left = *(
const uint8_t *)u16_buf;
160 static inline uint16_t
161 __rte_raw_cksum_reduce(uint32_t sum)
163 sum = ((sum & 0xffff0000) >> 16) + (sum & 0xffff);
164 sum = ((sum & 0xffff0000) >> 16) + (sum & 0xffff);
165 return (uint16_t)sum;
178 static inline uint16_t
183 sum = __rte_raw_cksum(buf, len, 0);
184 return __rte_raw_cksum_reduce(sum);
208 uint32_t seglen, done;
213 const char *, off), len);
222 for (seg = m; seg != NULL; seg = seg->
next) {
228 RTE_ASSERT(seg != NULL);
243 tmp = __rte_raw_cksum(buf, seglen, 0);
253 if (seglen > len - done)
257 *cksum = __rte_raw_cksum_reduce(sum);
271 static inline uint16_t
276 return (uint16_t)~cksum;
297 static inline uint16_t
300 struct ipv4_psd_header {
308 psd_hdr.src_addr = ipv4_hdr->
src_addr;
309 psd_hdr.dst_addr = ipv4_hdr->
dst_addr;
335 static inline uint16_t
339 uint32_t l3_len, l4_len;
350 cksum = ((cksum & 0xffff0000) >> 16) + (cksum & 0xffff);
351 cksum = (~cksum) & 0xffff;
360 return (uint16_t)cksum;
373 } __attribute__((__packed__));
376 #define RTE_IPV6_HDR_FL_SHIFT 0
377 #define RTE_IPV6_HDR_TC_SHIFT 20
378 #define RTE_IPV6_HDR_FL_MASK ((1u << RTE_IPV6_HDR_TC_SHIFT) - 1)
379 #define RTE_IPV6_HDR_TC_MASK (0xff << RTE_IPV6_HDR_TC_SHIFT)
380 #define RTE_IPV6_HDR_DSCP_MASK (0xfc << RTE_IPV6_HDR_TC_SHIFT)
381 #define RTE_IPV6_HDR_ECN_MASK (0x03 << RTE_IPV6_HDR_TC_SHIFT)
382 #define RTE_IPV6_HDR_ECN_CE RTE_IPV6_HDR_ECN_MASK
400 static inline uint16_t
409 psd_hdr.proto = (uint32_t)(ipv6_hdr->
proto << 24);
416 sum = __rte_raw_cksum(ipv6_hdr->
src_addr,
419 sum = __rte_raw_cksum(&psd_hdr,
sizeof(psd_hdr), sum);
420 return __rte_raw_cksum_reduce(sum);
436 static inline uint16_t
447 cksum = ((cksum & 0xffff0000) >> 16) + (cksum & 0xffff);
448 cksum = (~cksum) & 0xffff;
454 if (cksum == 0 && ipv6_hdr->
proto == IPPROTO_UDP)
457 return (uint16_t)cksum;
461 #define RTE_IPV6_FRAG_HDR_SIZE 8
488 *ext_len = (*p + 2) *
sizeof(uint32_t);
491 case IPPROTO_HOPOPTS:
492 case IPPROTO_ROUTING:
493 case IPPROTO_DSTOPTS:
495 *ext_len = (*p + 1) *
sizeof(uint64_t);
498 case IPPROTO_FRAGMENT:
500 *ext_len = RTE_IPV6_FRAG_HDR_SIZE;