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net/af_packet: support default MAC address change

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Since packet is talking to a network device (probably tap)
it is possible for the device driver to change the hardware address
by making an ioctl to kernel.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
This commit is contained in:
Stephen Hemminger 2020-02-15 11:20:12 -08:00 committed by Ferruh Yigit
parent df4867cd70
commit c524527dbe
1 changed files with 28 additions and 0 deletions
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28
drivers/net/af_packet/rte_eth_af_packet.c
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@ -19,6 +19,7 @@
#include <linux/if_packet.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
@ -468,6 +469,32 @@ eth_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
return 0;
}
static int
eth_dev_macaddr_set(struct rte_eth_dev *dev, struct rte_ether_addr *addr)
{
struct pmd_internals *internals = dev->data->dev_private;
struct ifreq ifr = { };
int sockfd = internals->rx_queue[0].sockfd;
int ret;
if (sockfd == -1) {
PMD_LOG(ERR, "receive socket not found");
return -EINVAL;
}
strlcpy(ifr.ifr_name, internals->if_name, IFNAMSIZ);
ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
memcpy(ifr.ifr_hwaddr.sa_data, addr, sizeof(*addr));
ret = ioctl(sockfd, SIOCSIFHWADDR, &ifr);
if (ret < 0) {
PMD_LOG_ERRNO(ERR, "ioctl(SIOCSIFHWADDR) failed");
return -EINVAL;
}
return 0;
}
static int
eth_dev_change_flags(char *if_name, uint32_t flags, uint32_t mask)
{
@ -517,6 +544,7 @@ static const struct eth_dev_ops ops = {
.dev_close = eth_dev_close,
.dev_configure = eth_dev_configure,
.dev_infos_get = eth_dev_info,
.mac_addr_set = eth_dev_macaddr_set,
.mtu_set = eth_dev_mtu_set,
.promiscuous_enable = eth_dev_promiscuous_enable,
.promiscuous_disable = eth_dev_promiscuous_disable,