99a2dd955f
There is no reason for the DPDK libraries to all have 'librte_' prefix on the directory names. This prefix makes the directory names longer and also makes it awkward to add features referring to individual libraries in the build - should the lib names be specified with or without the prefix. Therefore, we can just remove the library prefix and use the library's unique name as the directory name, i.e. 'eal' rather than 'librte_eal' Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
120 lines
2.3 KiB
C
120 lines
2.3 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation
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*/
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#include <stdbool.h>
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#include <rte_ether.h>
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#include <rte_errno.h>
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void
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rte_eth_random_addr(uint8_t *addr)
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{
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#ifdef RTE_EXEC_ENV_WINDOWS /* FIXME: random is not supported */
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RTE_SET_USED(addr);
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#else
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uint64_t rand = rte_rand();
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uint8_t *p = (uint8_t *)&rand;
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rte_memcpy(addr, p, RTE_ETHER_ADDR_LEN);
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addr[0] &= (uint8_t)~RTE_ETHER_GROUP_ADDR; /* clear multicast bit */
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addr[0] |= RTE_ETHER_LOCAL_ADMIN_ADDR; /* set local assignment bit */
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#endif
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}
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void
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rte_ether_format_addr(char *buf, uint16_t size,
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const struct rte_ether_addr *eth_addr)
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{
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snprintf(buf, size, "%02X:%02X:%02X:%02X:%02X:%02X",
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eth_addr->addr_bytes[0],
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eth_addr->addr_bytes[1],
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eth_addr->addr_bytes[2],
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eth_addr->addr_bytes[3],
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eth_addr->addr_bytes[4],
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eth_addr->addr_bytes[5]);
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}
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static int8_t get_xdigit(char ch)
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{
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if (ch >= '0' && ch <= '9')
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return ch - '0';
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if (ch >= 'a' && ch <= 'f')
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return ch - 'a' + 10;
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if (ch >= 'A' && ch <= 'F')
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return ch - 'A' + 10;
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return -1;
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}
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/* Convert 00:11:22:33:44:55 to ethernet address */
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static bool get_ether_addr6(const char *s0, struct rte_ether_addr *ea)
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{
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const char *s = s0;
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int i;
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for (i = 0; i < RTE_ETHER_ADDR_LEN; i++) {
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int8_t x;
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x = get_xdigit(*s++);
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if (x < 0)
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return false;
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ea->addr_bytes[i] = x << 4;
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x = get_xdigit(*s++);
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if (x < 0)
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return false;
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ea->addr_bytes[i] |= x;
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if (i < RTE_ETHER_ADDR_LEN - 1 &&
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*s++ != ':')
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return false;
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}
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/* return true if at end of string */
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return *s == '\0';
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}
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/* Convert 0011:2233:4455 to ethernet address */
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static bool get_ether_addr3(const char *s, struct rte_ether_addr *ea)
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{
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int i, j;
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for (i = 0; i < RTE_ETHER_ADDR_LEN; i += 2) {
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uint16_t w = 0;
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for (j = 0; j < 4; j++) {
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int8_t x;
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x = get_xdigit(*s++);
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if (x < 0)
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return false;
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w = (w << 4) | x;
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}
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ea->addr_bytes[i] = w >> 8;
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ea->addr_bytes[i + 1] = w & 0xff;
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if (i < RTE_ETHER_ADDR_LEN - 2 &&
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*s++ != ':')
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return false;
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}
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return *s == '\0';
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}
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/*
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* Like ether_aton_r but can handle either
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* XX:XX:XX:XX:XX:XX or XXXX:XXXX:XXXX
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* and is more restrictive.
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*/
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int
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rte_ether_unformat_addr(const char *s, struct rte_ether_addr *ea)
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{
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if (get_ether_addr6(s, ea))
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return 0;
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if (get_ether_addr3(s, ea))
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return 0;
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rte_errno = EINVAL;
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return -1;
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}
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