[dpdk-dev] [PATCH 1/2] ethdev: add api to set default mac address

[Wang, Liang-min]

>> -----Original Message-----
>> From: Wang, Liang-min
>> Sent: Friday, May 29, 2015 8:27 PM
>> To: dev at dpdk.org
>> Cc: Richardson, Bruce; Ananyev, Konstantin; dharton at cisco.com; 
> >agh at cisco.com; Wang, Liang-min
>> Subject: [PATCH 1/2] ethdev: add api to set default mac address
> >
>> add a new api: rte_eth_dev_default_mac_addr_set to support changing 
>> default mac address of a NIC
> >
> >Signed-off-by: Liang-Min Larry Wang <liang-min.wang at intel.com>
>> ---
> > lib/librte_ether/rte_ethdev.c          | 16 ++++++++++++++++
> > lib/librte_ether/rte_ethdev.h          | 14 ++++++++++++++
>>  lib/librte_ether/rte_ether_version.map |  1 +
>> 3 files changed, 31 insertions(+)
>>
>> diff --git a/lib/librte_ether/rte_ethdev.c 
>> b/lib/librte_ether/rte_ethdev.c index 024fe8b..96ee00e 100644
>> --- a/lib/librte_ether/rte_ethdev.c
>> +++ b/lib/librte_ether/rte_ethdev.c
>> @@ -2752,6 +2752,22 @@ rte_eth_dev_mac_addr_remove(uint8_t port_id, 
>> struct ether_addr *addr)  }
>> 
>>  int
>> +rte_eth_dev_default_mac_addr_set(uint8_t port_id, struct ether_addr 
>> +*addr) {
>> +	struct rte_eth_dev *dev;
>> +
>> +	if (!rte_eth_dev_is_valid_port(port_id)) {
>> +		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
>> +		return -ENODEV;
>> +	}
>> +
>> +	dev = &rte_eth_devices[port_id];
>> +	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->mac_addr_set, -ENOTSUP);
>> +
>> +	return (*dev->dev_ops->mac_addr_set)(dev, addr); }


>As I can see mac_addr_set() is implemented now only for virtio.
>Which means that for all Intel HW your new rte_eth_dev_default_mac_addr_set()
>would not work right now?
>Probably rte_eth_dev_default_mac_addr_set() should combine both approaches:
>If mac_addr_set() is implemented by dev, then use it, otherwise try to use addr_remove()/addr_add() (as your first version did)?
>Konstantin   

The implementation of mac_addr_set() through mac_addr_remove() and mac_addr_add() is very creative, but it may not work for devices other than igb/ixgbe. I will release a patch latter to add hooks on igb and ixgbe(). Just want to keep this interface clean and not to be confined to igb/ixgbe characteristics.

> +
> +int
>  rte_eth_dev_set_vf_rxmode(uint8_t port_id,  uint16_t vf,
>  				uint16_t rx_mode, uint8_t on)
>  {
> diff --git a/lib/librte_ether/rte_ethdev.h 
> b/lib/librte_ether/rte_ethdev.h index 16dbe00..5f07e0d 100644
> --- a/lib/librte_ether/rte_ethdev.h
> +++ b/lib/librte_ether/rte_ethdev.h
> @@ -2982,6 +2982,20 @@ int rte_eth_dev_mac_addr_add(uint8_t port, 
> struct ether_addr *mac_addr,  int rte_eth_dev_mac_addr_remove(uint8_t 
> port, struct ether_addr *mac_addr);
> 
>  /**
> + * Set the default MAC address.
> + *
> + * @param port
> + *   The port identifier of the Ethernet device.
> + * @param mac_addr
> + *   New default MAC address.
> + * @return
> + *   - (0) if successful, or *mac_addr* didn't exist.
> + *   - (-ENOTSUP) if hardware doesn't support.
> + *   - (-ENODEV) if *port* invalid.
> + */
> +int rte_eth_dev_default_mac_addr_set(uint8_t port, struct ether_addr 
> +*mac_addr);
> +
> +/**
>   * Update Redirection Table(RETA) of Receive Side Scaling of Ethernet device.
>   *
>   * @param port
> diff --git a/lib/librte_ether/rte_ether_version.map 
> b/lib/librte_ether/rte_ether_version.map
> index a2d25a6..2dbbaa7 100644
> --- a/lib/librte_ether/rte_ether_version.map
> +++ b/lib/librte_ether/rte_ether_version.map
> @@ -102,6 +102,7 @@ DPDK_2.0 {
>  	rte_eth_tx_queue_setup;
>  	rte_eth_xstats_get;
>  	rte_eth_xstats_reset;
> +	rte_eth_dev_default_mac_addr_set;
> 
>  	local: *;
>  };
> --
> 2.1.4