DPDK 21.11.9
rte_ether.h
Go to the documentation of this file.
1/* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
3 */
4
5#ifndef _RTE_ETHER_H_
6#define _RTE_ETHER_H_
7
14#ifdef __cplusplus
15extern "C" {
16#endif
17
18#include <stdint.h>
19#include <stdio.h>
20
21#include <rte_memcpy.h>
22#include <rte_random.h>
23#include <rte_mbuf.h>
24#include <rte_byteorder.h>
25
26#define RTE_ETHER_ADDR_LEN 6
27#define RTE_ETHER_TYPE_LEN 2
28#define RTE_ETHER_CRC_LEN 4
29#define RTE_ETHER_HDR_LEN \
30 (RTE_ETHER_ADDR_LEN * 2 + \
31 RTE_ETHER_TYPE_LEN)
32#define RTE_ETHER_MIN_LEN 64
33#define RTE_ETHER_MAX_LEN 1518
34#define RTE_ETHER_MTU \
35 (RTE_ETHER_MAX_LEN - RTE_ETHER_HDR_LEN - \
36 RTE_ETHER_CRC_LEN)
38#define RTE_VLAN_HLEN 4
40#define RTE_ETHER_MAX_VLAN_FRAME_LEN \
41 (RTE_ETHER_MAX_LEN + RTE_VLAN_HLEN)
42
43#define RTE_ETHER_MAX_JUMBO_FRAME_LEN \
44 0x3F00
46#define RTE_ETHER_MAX_VLAN_ID 4095
48#define RTE_ETHER_MIN_MTU 68
50/* VLAN header fields */
51#define RTE_VLAN_DEI_SHIFT 12
52#define RTE_VLAN_PRI_SHIFT 13
53#define RTE_VLAN_PRI_MASK 0xe000 /* Priority Code Point */
54#define RTE_VLAN_DEI_MASK 0x1000 /* Drop Eligible Indicator */
55#define RTE_VLAN_ID_MASK 0x0fff /* VLAN Identifier */
56
57#define RTE_VLAN_TCI_ID(vlan_tci) ((vlan_tci) & RTE_VLAN_ID_MASK)
58#define RTE_VLAN_TCI_PRI(vlan_tci) (((vlan_tci) & RTE_VLAN_PRI_MASK) >> RTE_VLAN_PRI_SHIFT)
59#define RTE_VLAN_TCI_DEI(vlan_tci) (((vlan_tci) & RTE_VLAN_DEI_MASK) >> RTE_VLAN_DEI_SHIFT)
60#define RTE_VLAN_TCI_MAKE(id, pri, dei) ((id) | \
61 ((pri) << RTE_VLAN_PRI_SHIFT) | \
62 ((dei) << RTE_VLAN_DEI_SHIFT))
63
77} __rte_aligned(2);
78
79#define RTE_ETHER_LOCAL_ADMIN_ADDR 0x02
80#define RTE_ETHER_GROUP_ADDR 0x01
96static inline int rte_is_same_ether_addr(const struct rte_ether_addr *ea1,
97 const struct rte_ether_addr *ea2)
98{
99 const uint16_t *w1 = (const uint16_t *)ea1;
100 const uint16_t *w2 = (const uint16_t *)ea2;
101
102 return ((w1[0] ^ w2[0]) | (w1[1] ^ w2[1]) | (w1[2] ^ w2[2])) == 0;
103}
104
115static inline int rte_is_zero_ether_addr(const struct rte_ether_addr *ea)
116{
117 const uint16_t *w = (const uint16_t *)ea;
118
119 return (w[0] | w[1] | w[2]) == 0;
120}
121
132static inline int rte_is_unicast_ether_addr(const struct rte_ether_addr *ea)
133{
134 return (ea->addr_bytes[0] & RTE_ETHER_GROUP_ADDR) == 0;
135}
136
147static inline int rte_is_multicast_ether_addr(const struct rte_ether_addr *ea)
148{
149 return ea->addr_bytes[0] & RTE_ETHER_GROUP_ADDR;
150}
151
162static inline int rte_is_broadcast_ether_addr(const struct rte_ether_addr *ea)
163{
164 const uint16_t *w = (const uint16_t *)ea;
165
166 return (w[0] & w[1] & w[2]) == 0xFFFF;
167}
168
179static inline int rte_is_universal_ether_addr(const struct rte_ether_addr *ea)
180{
181 return (ea->addr_bytes[0] & RTE_ETHER_LOCAL_ADMIN_ADDR) == 0;
182}
183
194static inline int rte_is_local_admin_ether_addr(const struct rte_ether_addr *ea)
195{
196 return (ea->addr_bytes[0] & RTE_ETHER_LOCAL_ADMIN_ADDR) != 0;
197}
198
210static inline int rte_is_valid_assigned_ether_addr(const struct rte_ether_addr *ea)
211{
213}
214
221void
222rte_eth_random_addr(uint8_t *addr);
223
232static inline void
233rte_ether_addr_copy(const struct rte_ether_addr *__restrict ea_from,
234 struct rte_ether_addr *__restrict ea_to)
235{
236 *ea_to = *ea_from;
237}
238
242#define RTE_ETHER_ADDR_PRT_FMT "%02X:%02X:%02X:%02X:%02X:%02X"
246#define RTE_ETHER_ADDR_BYTES(mac_addrs) ((mac_addrs)->addr_bytes[0]), \
247 ((mac_addrs)->addr_bytes[1]), \
248 ((mac_addrs)->addr_bytes[2]), \
249 ((mac_addrs)->addr_bytes[3]), \
250 ((mac_addrs)->addr_bytes[4]), \
251 ((mac_addrs)->addr_bytes[5])
252
253#define RTE_ETHER_ADDR_FMT_SIZE 18
264void
265rte_ether_format_addr(char *buf, uint16_t size,
266 const struct rte_ether_addr *eth_addr);
281int
282rte_ether_unformat_addr(const char *str, struct rte_ether_addr *eth_addr);
283
292} __rte_aligned(2);
293
303
304
305
306/* Ethernet frame types */
307#define RTE_ETHER_TYPE_IPV4 0x0800
308#define RTE_ETHER_TYPE_IPV6 0x86DD
309#define RTE_ETHER_TYPE_ARP 0x0806
310#define RTE_ETHER_TYPE_RARP 0x8035
311#define RTE_ETHER_TYPE_VLAN 0x8100
312#define RTE_ETHER_TYPE_QINQ 0x88A8
313#define RTE_ETHER_TYPE_QINQ1 0x9100
314#define RTE_ETHER_TYPE_QINQ2 0x9200
315#define RTE_ETHER_TYPE_QINQ3 0x9300
316#define RTE_ETHER_TYPE_PPPOE_DISCOVERY 0x8863
317#define RTE_ETHER_TYPE_PPPOE_SESSION 0x8864
318#define RTE_ETHER_TYPE_ETAG 0x893F
319#define RTE_ETHER_TYPE_1588 0x88F7
321#define RTE_ETHER_TYPE_SLOW 0x8809
322#define RTE_ETHER_TYPE_TEB 0x6558
323#define RTE_ETHER_TYPE_LLDP 0x88CC
324#define RTE_ETHER_TYPE_MPLS 0x8847
325#define RTE_ETHER_TYPE_MPLSM 0x8848
326#define RTE_ETHER_TYPE_ECPRI 0xAEFE
339static inline int rte_vlan_strip(struct rte_mbuf *m)
340{
341 struct rte_ether_hdr *eh
342 = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
343 struct rte_vlan_hdr *vh;
344
346 return -1;
347
348 vh = (struct rte_vlan_hdr *)(eh + 1);
351
352 /* Copy ether header over rather than moving whole packet */
353 memmove(rte_pktmbuf_adj(m, sizeof(struct rte_vlan_hdr)),
354 eh, 2 * RTE_ETHER_ADDR_LEN);
355
356 return 0;
357}
358
371static inline int rte_vlan_insert(struct rte_mbuf **m)
372{
373 struct rte_ether_hdr *oh, *nh;
374 struct rte_vlan_hdr *vh;
375
376 /* Can't insert header if mbuf is shared */
377 if (!RTE_MBUF_DIRECT(*m) || rte_mbuf_refcnt_read(*m) > 1)
378 return -EINVAL;
379
380 /* Can't insert header if the first segment is too short */
382 return -EINVAL;
383
384 oh = rte_pktmbuf_mtod(*m, struct rte_ether_hdr *);
385 nh = (struct rte_ether_hdr *)(void *)
386 rte_pktmbuf_prepend(*m, sizeof(struct rte_vlan_hdr));
387 if (nh == NULL)
388 return -ENOSPC;
389
390 memmove(nh, oh, 2 * RTE_ETHER_ADDR_LEN);
392
393 vh = (struct rte_vlan_hdr *) (nh + 1);
394 vh->vlan_tci = rte_cpu_to_be_16((*m)->vlan_tci);
395
396 (*m)->ol_flags &= ~(RTE_MBUF_F_RX_VLAN_STRIPPED | RTE_MBUF_F_TX_VLAN);
397
398 if ((*m)->ol_flags & RTE_MBUF_F_TX_TUNNEL_MASK)
399 (*m)->outer_l2_len += sizeof(struct rte_vlan_hdr);
400 else
401 (*m)->l2_len += sizeof(struct rte_vlan_hdr);
402
403 return 0;
404}
405
406#ifdef __cplusplus
407}
408#endif
409
410#endif /* _RTE_ETHER_H_ */
static uint16_t rte_be_to_cpu_16(rte_be16_t x)
static rte_be16_t rte_cpu_to_be_16(uint16_t x)
uint16_t rte_be16_t
#define __rte_packed
Definition: rte_common.h:86
__extension__ struct rte_eth_link __rte_aligned(8)
#define RTE_ETHER_TYPE_VLAN
Definition: rte_ether.h:311
#define RTE_ETHER_ADDR_LEN
Definition: rte_ether.h:26
static int rte_is_same_ether_addr(const struct rte_ether_addr *ea1, const struct rte_ether_addr *ea2)
Definition: rte_ether.h:96
static int rte_is_unicast_ether_addr(const struct rte_ether_addr *ea)
Definition: rte_ether.h:132
#define RTE_ETHER_LOCAL_ADMIN_ADDR
Definition: rte_ether.h:79
static int rte_is_universal_ether_addr(const struct rte_ether_addr *ea)
Definition: rte_ether.h:179
static int rte_is_zero_ether_addr(const struct rte_ether_addr *ea)
Definition: rte_ether.h:115
static int rte_is_valid_assigned_ether_addr(const struct rte_ether_addr *ea)
Definition: rte_ether.h:210
int rte_ether_unformat_addr(const char *str, struct rte_ether_addr *eth_addr)
#define RTE_ETHER_GROUP_ADDR
Definition: rte_ether.h:80
static int rte_vlan_strip(struct rte_mbuf *m)
Definition: rte_ether.h:339
static int rte_is_local_admin_ether_addr(const struct rte_ether_addr *ea)
Definition: rte_ether.h:194
static int rte_vlan_insert(struct rte_mbuf **m)
Definition: rte_ether.h:371
void rte_ether_format_addr(char *buf, uint16_t size, const struct rte_ether_addr *eth_addr)
static void rte_ether_addr_copy(const struct rte_ether_addr *__restrict ea_from, struct rte_ether_addr *__restrict ea_to)
Definition: rte_ether.h:233
static int rte_is_multicast_ether_addr(const struct rte_ether_addr *ea)
Definition: rte_ether.h:147
void rte_eth_random_addr(uint8_t *addr)
static int rte_is_broadcast_ether_addr(const struct rte_ether_addr *ea)
Definition: rte_ether.h:162
#define rte_pktmbuf_data_len(m)
Definition: rte_mbuf.h:1531
static char * rte_pktmbuf_prepend(struct rte_mbuf *m, uint16_t len)
Definition: rte_mbuf.h:1548
static char * rte_pktmbuf_adj(struct rte_mbuf *m, uint16_t len)
Definition: rte_mbuf.h:1612
static uint16_t rte_mbuf_refcnt_read(const struct rte_mbuf *m)
Definition: rte_mbuf.h:404
#define rte_pktmbuf_mtod(m, t)
#define RTE_MBUF_F_TX_VLAN
#define RTE_MBUF_DIRECT(mb)
#define RTE_MBUF_F_RX_VLAN_STRIPPED
Definition: rte_mbuf_core.h:75
#define RTE_MBUF_F_RX_VLAN
Definition: rte_mbuf_core.h:50
uint8_t addr_bytes[RTE_ETHER_ADDR_LEN]
Definition: rte_ether.h:76
rte_be16_t ether_type
Definition: rte_ether.h:291
struct rte_ether_addr src_addr
Definition: rte_ether.h:290
struct rte_ether_addr dst_addr
Definition: rte_ether.h:289
uint64_t ol_flags
uint16_t vlan_tci
rte_be16_t eth_proto
Definition: rte_ether.h:301
rte_be16_t vlan_tci
Definition: rte_ether.h:300