1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
11 rte_eth_random_addr(uint8_t *addr)
13 #ifdef RTE_EXEC_ENV_WINDOWS /* FIXME: random is not supported */
16 uint64_t rand = rte_rand();
17 uint8_t *p = (uint8_t *)&rand;
19 rte_memcpy(addr, p, RTE_ETHER_ADDR_LEN);
20 addr[0] &= (uint8_t)~RTE_ETHER_GROUP_ADDR; /* clear multicast bit */
21 addr[0] |= RTE_ETHER_LOCAL_ADMIN_ADDR; /* set local assignment bit */
26 rte_ether_format_addr(char *buf, uint16_t size,
27 const struct rte_ether_addr *eth_addr)
29 snprintf(buf, size, "%02X:%02X:%02X:%02X:%02X:%02X",
30 eth_addr->addr_bytes[0],
31 eth_addr->addr_bytes[1],
32 eth_addr->addr_bytes[2],
33 eth_addr->addr_bytes[3],
34 eth_addr->addr_bytes[4],
35 eth_addr->addr_bytes[5]);
38 static int8_t get_xdigit(char ch)
40 if (ch >= '0' && ch <= '9')
42 if (ch >= 'a' && ch <= 'f')
44 if (ch >= 'A' && ch <= 'F')
49 /* Convert 00:11:22:33:44:55 to ethernet address */
50 static bool get_ether_addr6(const char *s0, struct rte_ether_addr *ea)
55 for (i = 0; i < RTE_ETHER_ADDR_LEN; i++) {
62 ea->addr_bytes[i] = x << 4;
66 ea->addr_bytes[i] |= x;
68 if (i < RTE_ETHER_ADDR_LEN - 1 &&
73 /* return true if at end of string */
77 /* Convert 0011:2233:4455 to ethernet address */
78 static bool get_ether_addr3(const char *s, struct rte_ether_addr *ea)
82 for (i = 0; i < RTE_ETHER_ADDR_LEN; i += 2) {
85 for (j = 0; j < 4; j++) {
93 ea->addr_bytes[i] = w >> 8;
94 ea->addr_bytes[i + 1] = w & 0xff;
96 if (i < RTE_ETHER_ADDR_LEN - 2 &&
105 * Like ether_aton_r but can handle either
106 * XX:XX:XX:XX:XX:XX or XXXX:XXXX:XXXX
107 * and is more restrictive.
110 rte_ether_unformat_addr(const char *s, struct rte_ether_addr *ea)
112 if (get_ether_addr6(s, ea))
114 if (get_ether_addr3(s, ea))