netdev - Re: [PATCH net] cxgb4: use port number to set mac addr

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Message-ID: <Z1AwgqSRsHxWgLn+@mev-dev.igk.intel.com>
Date: Wed, 4 Dec 2024 11:35:46 +0100
From: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
To: Anumula Murali Mohan Reddy <anumula@...lsio.com>
Cc: netdev@...r.kernel.org, davem@...emloft.net, kuba@...nel.org,
	andrew+netdev@...n.ch, pabeni@...hat.com, bharat@...lsio.com
Subject: Re: [PATCH net] cxgb4: use port number to set mac addr

On Tue, Dec 03, 2024 at 08:11:49PM +0530, Anumula Murali Mohan Reddy wrote:
> t4_set_vf_mac_acl() uses pf to set mac addr, but t4vf_get_vf_mac_acl()
> uses port number to get mac addr, this leads to error when an attempt
> to set MAC address on VF's of PF2 and PF3.
> This patch fixes the issue by using port number to set mac address.
> 
> Signed-off-by: Anumula Murali Mohan Reddy <anumula@...lsio.com>
> Signed-off-by: Potnuri Bharat Teja <bharat@...lsio.com>
> ---
>  drivers/net/ethernet/chelsio/cxgb4/cxgb4.h      | 2 +-
>  drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 2 +-
>  drivers/net/ethernet/chelsio/cxgb4/t4_hw.c      | 5 +++--
>  3 files changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
> index 75bd69ff61a8..c7c2c15a1815 100644
> --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
> +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
> @@ -2076,7 +2076,7 @@ void t4_idma_monitor(struct adapter *adapter,
>  		     struct sge_idma_monitor_state *idma,
>  		     int hz, int ticks);
>  int t4_set_vf_mac_acl(struct adapter *adapter, unsigned int vf,
> -		      unsigned int naddr, u8 *addr);
> +		      u8 start, unsigned int naddr, u8 *addr);
>  void t4_tp_pio_read(struct adapter *adap, u32 *buff, u32 nregs,
>  		    u32 start_index, bool sleep_ok);
>  void t4_tp_tm_pio_read(struct adapter *adap, u32 *buff, u32 nregs,
> diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
> index 97a261d5357e..bc3af0054406 100644
> --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
> +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
> @@ -3234,7 +3234,7 @@ static int cxgb4_mgmt_set_vf_mac(struct net_device *dev, int vf, u8 *mac)
>  
>  	dev_info(pi->adapter->pdev_dev,
>  		 "Setting MAC %pM on VF %d\n", mac, vf);
> -	ret = t4_set_vf_mac_acl(adap, vf + 1, 1, mac);
> +	ret = t4_set_vf_mac_acl(adap, vf + 1, pi->lport, 1, mac);
>  	if (!ret)
>  		ether_addr_copy(adap->vfinfo[vf].vf_mac_addr, mac);
>  	return ret;
> diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
> index 76de55306c4d..175bf9b13058 100644
> --- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
> +++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
> @@ -10215,11 +10215,12 @@ int t4_load_cfg(struct adapter *adap, const u8 *cfg_data, unsigned int size)
>   *	t4_set_vf_mac_acl - Set MAC address for the specified VF
>   *	@adapter: The adapter
>   *	@vf: one of the VFs instantiated by the specified PF
> + *	@start: The start port id associated with specified VF
>   *	@naddr: the number of MAC addresses
>   *	@addr: the MAC address(es) to be set to the specified VF
>   */
>  int t4_set_vf_mac_acl(struct adapter *adapter, unsigned int vf,
> -		      unsigned int naddr, u8 *addr)
> +		      u8 start, unsigned int naddr, u8 *addr)
>  {
>  	struct fw_acl_mac_cmd cmd;
>  
> @@ -10234,7 +10235,7 @@ int t4_set_vf_mac_acl(struct adapter *adapter, unsigned int vf,
>  	cmd.en_to_len16 = cpu_to_be32((unsigned int)FW_LEN16(cmd));
>  	cmd.nmac = naddr;
>  
> -	switch (adapter->pf) {
> +	switch (start) {
>  	case 3:
>  		memcpy(cmd.macaddr3, addr, sizeof(cmd.macaddr3));
You can use ether_addr_copy().

Beside that and fixes tag:
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>

>  		break;
> -- 
> 2.39.3