DPDK  18.11.0
rte_net.h
1 /* SPDX-License-Identifier: BSD-3-Clause
2  * Copyright 2016 6WIND S.A.
3  */
4 
5 #ifndef _RTE_NET_PTYPE_H_
6 #define _RTE_NET_PTYPE_H_
7 
8 #ifdef __cplusplus
9 extern "C" {
10 #endif
11 
12 #include <rte_ip.h>
13 #include <rte_udp.h>
14 #include <rte_tcp.h>
15 #include <rte_sctp.h>
16 
22  uint8_t l2_len;
23  uint8_t l3_len;
24  uint8_t l4_len;
25  uint8_t tunnel_len;
26  uint8_t inner_l2_len;
27  uint8_t inner_l3_len;
28  uint8_t inner_l4_len;
29 };
30 
54 int __rte_experimental
55 rte_net_skip_ip6_ext(uint16_t proto, const struct rte_mbuf *m, uint32_t *off,
56  int *frag);
57 
89 uint32_t rte_net_get_ptype(const struct rte_mbuf *m,
90  struct rte_net_hdr_lens *hdr_lens, uint32_t layers);
91 
112 static inline int
113 rte_net_intel_cksum_flags_prepare(struct rte_mbuf *m, uint64_t ol_flags)
114 {
115  struct ipv4_hdr *ipv4_hdr;
116  struct ipv6_hdr *ipv6_hdr;
117  struct tcp_hdr *tcp_hdr;
118  struct udp_hdr *udp_hdr;
119  uint64_t inner_l3_offset = m->l2_len;
120 
121  if ((ol_flags & PKT_TX_OUTER_IP_CKSUM) ||
122  (ol_flags & PKT_TX_OUTER_IPV6))
123  inner_l3_offset += m->outer_l2_len + m->outer_l3_len;
124 
125  if (ol_flags & PKT_TX_IPV4) {
127  inner_l3_offset);
128 
129  if (ol_flags & PKT_TX_IP_CKSUM)
130  ipv4_hdr->hdr_checksum = 0;
131  }
132 
133  if ((ol_flags & PKT_TX_UDP_CKSUM) == PKT_TX_UDP_CKSUM) {
134  if (ol_flags & PKT_TX_IPV4) {
135  udp_hdr = (struct udp_hdr *)((char *)ipv4_hdr +
136  m->l3_len);
138  ol_flags);
139  } else {
141  inner_l3_offset);
142  /* non-TSO udp */
144  inner_l3_offset + m->l3_len);
146  ol_flags);
147  }
148  } else if ((ol_flags & PKT_TX_TCP_CKSUM) ||
149  (ol_flags & PKT_TX_TCP_SEG)) {
150  if (ol_flags & PKT_TX_IPV4) {
151  /* non-TSO tcp or TSO */
152  tcp_hdr = (struct tcp_hdr *)((char *)ipv4_hdr +
153  m->l3_len);
155  ol_flags);
156  } else {
158  inner_l3_offset);
159  /* non-TSO tcp or TSO */
161  inner_l3_offset + m->l3_len);
163  ol_flags);
164  }
165  }
166 
167  return 0;
168 }
169 
188 static inline int
189 rte_net_intel_cksum_prepare(struct rte_mbuf *m)
190 {
191  return rte_net_intel_cksum_flags_prepare(m, m->ol_flags);
192 }
193 
194 #ifdef __cplusplus
195 }
196 #endif
197 
198 
199 #endif /* _RTE_NET_PTYPE_H_ */
uint16_t cksum
Definition: rte_tcp.h:34
static uint16_t rte_ipv4_phdr_cksum(const struct ipv4_hdr *ipv4_hdr, uint64_t ol_flags)
Definition: rte_ip.h:279
uint16_t hdr_checksum
Definition: rte_ip.h:39
uint64_t l2_len
Definition: rte_mbuf.h:629
#define PKT_TX_OUTER_IP_CKSUM
Definition: rte_mbuf.h:352
uint64_t outer_l3_len
Definition: rte_mbuf.h:638
uint64_t l3_len
Definition: rte_mbuf.h:633
#define PKT_TX_TCP_SEG
Definition: rte_mbuf.h:297
#define PKT_TX_IPV4
Definition: rte_mbuf.h:329
static uint16_t rte_ipv6_phdr_cksum(const struct ipv6_hdr *ipv6_hdr, uint64_t ol_flags)
Definition: rte_ip.h:371
uint64_t outer_l2_len
Definition: rte_mbuf.h:639
#define PKT_TX_OUTER_IPV6
Definition: rte_mbuf.h:366
uint64_t ol_flags
Definition: rte_mbuf.h:515
#define PKT_TX_IP_CKSUM
Definition: rte_mbuf.h:321
uint16_t dgram_cksum
Definition: rte_udp.h:30
#define PKT_TX_UDP_CKSUM
Definition: rte_mbuf.h:312
#define rte_pktmbuf_mtod_offset(m, t, o)
Definition: rte_mbuf.h:1890
#define PKT_TX_TCP_CKSUM
Definition: rte_mbuf.h:310