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ethdev: random MAC address

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Factorize code by moving random_addr() function in only place.
It will be reused for virtio.

Signed-off-by: Intel
This commit is contained in:
Intel 2013-09-18 12:00:00 +02:00 committed by Thomas Monjalon
parent 7bd128eae2
commit 7ef0072910
3 changed files with 19 additions and 22 deletions
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19
lib/librte_ether/rte_ether.h
View File

@ -46,6 +46,9 @@ extern "C" {
#include <stdint.h> #include <stdint.h>
#include <rte_memcpy.h>
#include <rte_random.h>
#define ETHER_ADDR_LEN 6 /**< Length of Ethernet address. */ #define ETHER_ADDR_LEN 6 /**< Length of Ethernet address. */
#define ETHER_TYPE_LEN 2 /**< Length of Ethernet type field. */ #define ETHER_TYPE_LEN 2 /**< Length of Ethernet type field. */
#define ETHER_CRC_LEN 4 /**< Length of Ethernet CRC. */ #define ETHER_CRC_LEN 4 /**< Length of Ethernet CRC. */
@ -195,6 +198,22 @@ static inline int is_valid_assigned_ether_addr(const struct ether_addr *ea)
return (is_unicast_ether_addr(ea) && (! is_zero_ether_addr(ea))); return (is_unicast_ether_addr(ea) && (! is_zero_ether_addr(ea)));
} }
/**
* Generate a random Ethernet address that is locally administered
* and not multicast.
* @param addr
* A pointer to Ethernet address.
*/
static inline void eth_random_addr(uint8_t *addr)
{
uint64_t rand = rte_rand();
uint8_t *p = (uint8_t*)&rand;
rte_memcpy(addr, p, ETHER_ADDR_LEN);
addr[0] &= ~ETHER_GROUP_ADDR; /* clear multicast bit */
addr[0] |= ETHER_LOCAL_ADMIN_ADDR; /* set local assignment bit */
}
/** /**
* Fast copy an Ethernet address. * Fast copy an Ethernet address.
* *

11
lib/librte_pmd_e1000/igb_pf.c
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@ -54,17 +54,6 @@
#include "e1000/e1000_hw.h" #include "e1000/e1000_hw.h"
#include "e1000_ethdev.h" #include "e1000_ethdev.h"
static inline
void eth_random_addr(uint8_t *addr)
{
uint64_t rand = rte_rand();
uint8_t *p = (uint8_t*)&rand;
rte_memcpy(addr, p, ETHER_ADDR_LEN);
addr[0] &= 0xfe; /* clear multicast bit */
addr[0] |= 0x02; /* set local assignment bit (IEEE802) */
}
static inline uint16_t static inline uint16_t
dev_num_vf(struct rte_eth_dev *eth_dev) dev_num_vf(struct rte_eth_dev *eth_dev)
{ {

11
lib/librte_pmd_ixgbe/ixgbe_pf.c
View File

@ -54,17 +54,6 @@
#define IXGBE_MAX_VFTA (128) #define IXGBE_MAX_VFTA (128)
static inline
void eth_random_addr(uint8_t *addr)
{
uint64_t rand = rte_rand();
uint8_t *p = (uint8_t*)&rand;
rte_memcpy(addr, p, ETHER_ADDR_LEN);
addr[0] &= 0xfe; /* clear multicast bit */
addr[0] |= 0x02; /* set local assignment bit (IEEE802) */
}
static inline uint16_t static inline uint16_t
dev_num_vf(struct rte_eth_dev *eth_dev) dev_num_vf(struct rte_eth_dev *eth_dev)
{ {