5.15-stable review patch. If anyone has any objections, please let me know.
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From: Ivan Mikhaylov fr0st61te@gmail.com
commit 790071347a0a1a89e618eedcd51c687ea783aeb3 upstream.
Change ndo_set_mac_address to dev_set_mac_address because dev_set_mac_address provides a way to notify network layer about MAC change. In other case, services may not aware about MAC change and keep using old one which set from network adapter driver.
As example, DHCP client from systemd do not update MAC address without notification from net subsystem which leads to the problem with acquiring the right address from DHCP server.
Fixes: cb10c7c0dfd9e ("net/ncsi: Add NCSI Broadcom OEM command") Cc: stable@vger.kernel.org # v6.0+ 2f38e84 net/ncsi: make one oem_gma function for all mfr id Signed-off-by: Paul Fertser fercerpav@gmail.com Signed-off-by: Ivan Mikhaylov fr0st61te@gmail.com Reviewed-by: Simon Horman simon.horman@corigine.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/ncsi/ncsi-rsp.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
--- a/net/ncsi/ncsi-rsp.c +++ b/net/ncsi/ncsi-rsp.c @@ -616,7 +616,6 @@ static int ncsi_rsp_handler_oem_gma(stru { struct ncsi_dev_priv *ndp = nr->ndp; struct net_device *ndev = ndp->ndev.dev; - const struct net_device_ops *ops = ndev->netdev_ops; struct ncsi_rsp_oem_pkt *rsp; struct sockaddr saddr; u32 mac_addr_off = 0; @@ -643,7 +642,9 @@ static int ncsi_rsp_handler_oem_gma(stru /* Set the flag for GMA command which should only be called once */ ndp->gma_flag = 1;
- ret = ops->ndo_set_mac_address(ndev, &saddr); + rtnl_lock(); + ret = dev_set_mac_address(ndev, &saddr, NULL); + rtnl_unlock(); if (ret < 0) netdev_warn(ndev, "NCSI: 'Writing mac address to device failed\n");