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kni: use dedicated function to set MAC address 

The warning info:
warning: passing argument 1 of ‘memcpy’ discards ‘const’
qualifier from pointer target type

Variable dev_addr is done const intentionally in v5.17 to prevent using
it directly.  See the following Linux kernel changeset for details:

commit adeef3e32146 ("net: constify netdev->dev_addr")

Used helper function was introduced earlier in v5.15.

Fixes: ea6b39b5b8 ("kni: remove ethtool support")
Cc: stable@dpdk.org

Signed-off-by: Ke Zhang <ke1x.zhang@intel.com>
Signed-off-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Acked-by: Ferruh Yigit <ferruh.yigit@xilinx.com>
This commit is contained in:
Ke Zhang 2022-06-08 15:11:17 +03:00 committed by Andrew Rybchenko
parent 2ee8c67ef9
commit b99bd4a0aa
3 changed files with 15 additions and 2 deletions
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4
kernel/linux/kni/compat.h
View File

@ -142,6 +142,10 @@
#define HAVE_TSK_IN_GUP
#endif
#if KERNEL_VERSION(5, 15, 0) <= LINUX_VERSION_CODE
#define HAVE_ETH_HW_ADDR_SET
#endif
#if KERNEL_VERSION(5, 18, 0) > LINUX_VERSION_CODE
#define HAVE_NETIF_RX_NI
#endif

9
kernel/linux/kni/kni_misc.c
View File

@ -402,11 +402,16 @@ kni_ioctl_create(struct net *net, uint32_t ioctl_num,
pr_debug("mbuf_size: %u\n", kni->mbuf_size);
/* if user has provided a valid mac address */
if (is_valid_ether_addr(dev_info.mac_addr))
if (is_valid_ether_addr(dev_info.mac_addr)) {
#ifdef HAVE_ETH_HW_ADDR_SET
eth_hw_addr_set(net_dev, dev_info.mac_addr);
#else
memcpy(net_dev->dev_addr, dev_info.mac_addr, ETH_ALEN);
else
#endif
} else {
/* Assign random MAC address. */
eth_hw_addr_random(net_dev);
}
if (dev_info.mtu)
net_dev->mtu = dev_info.mtu;

4
kernel/linux/kni/kni_net.c
View File

@ -783,7 +783,11 @@ kni_net_set_mac(struct net_device *netdev, void *p)
return -EADDRNOTAVAIL;
memcpy(req.mac_addr, addr->sa_data, netdev->addr_len);
#ifdef HAVE_ETH_HW_ADDR_SET
eth_hw_addr_set(netdev, addr->sa_data);
#else
memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
#endif
ret = kni_net_process_request(netdev, &req);