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;
static int rte_raw_cksum_mbuf(const struct rte_mbuf *m, uint32_t off, uint32_t len, uint16_t *cksum)
static uint16_t rte_ipv4_udptcp_cksum(const struct rte_ipv4_hdr *ipv4_hdr, const void *l4_hdr)
rte_be16_t fragment_offset
static uint16_t rte_bswap16(uint16_t _x)
static __rte_experimental int rte_ipv6_get_next_ext(const uint8_t *p, int proto, size_t *ext_len)
#define rte_pktmbuf_mtod_offset(m, t, o)
static rte_be16_t rte_cpu_to_be_16(uint16_t x)
static uint16_t rte_ipv4_phdr_cksum(const struct rte_ipv4_hdr *ipv4_hdr, uint64_t ol_flags)
static uint16_t rte_ipv6_phdr_cksum(const struct rte_ipv6_hdr *ipv6_hdr, uint64_t ol_flags)
#define rte_pktmbuf_mtod(m, t)
#define rte_pktmbuf_pkt_len(m)
static uint16_t rte_raw_cksum(const void *buf, size_t len)
#define rte_pktmbuf_data_len(m)
static uint16_t rte_be_to_cpu_16(rte_be16_t x)
static uint16_t rte_ipv4_cksum(const struct rte_ipv4_hdr *ipv4_hdr)
static uint16_t rte_ipv6_udptcp_cksum(const struct rte_ipv6_hdr *ipv6_hdr, const void *l4_hdr)