From c524527dbe1cad41a79bc8839fb744d7a3010f38 Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Sat, 15 Feb 2020 11:20:12 -0800 Subject: [PATCH] net/af_packet: support default MAC address change 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 Reviewed-by: Ferruh Yigit --- drivers/net/af_packet/rte_eth_af_packet.c | 28 +++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/drivers/net/af_packet/rte_eth_af_packet.c b/drivers/net/af_packet/rte_eth_af_packet.c index f5806bf42c..ae3c25f2b6 100644 --- a/drivers/net/af_packet/rte_eth_af_packet.c +++ b/drivers/net/af_packet/rte_eth_af_packet.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include #include @@ -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, -- 2.20.1