[PATCH] net/tap: Bug fix to populate fds in secondary process

[Ferruh Yigit]

On 1/20/2022 11:12 AM, Kumara Parameshwaran wrote:
> From: Kumara Parameshwaran <kparameshwar at vmware.com>
> 
> When a tap device is hotplugged to primary process which in turn
> adds the device to all secondary process, the secondary process
> does a tap_mp_attach_queues, but the fds are not populated in
> the primary during the probe they are populated during the queue_setup,
> added a fix to sync the queues during rte_eth_dev_start
> 

Can you please make this a two patches set?
First one is the new API patch,
second one is the tap patch that uses the new API.

> Signed-off-by: Kumara Parameshwaran <kparameshwar at vmware.com
<...>

> diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h
> index 096b676fc1..d9594c0460 100644
> --- a/lib/ethdev/rte_ethdev.h
> +++ b/lib/ethdev/rte_ethdev.h
> @@ -4987,6 +4987,22 @@ rte_eth_read_clock(uint16_t port_id, uint64_t *clock);
>   int
>   rte_eth_dev_get_port_by_name(const char *name, uint16_t *port_id);
>   
> +/**
> +* Get rte_eth_dev from device name. The device name should be specified
> +* as below:
> +* - PCIe address (Domain:Bus:Device.Function), for example- 0000:2:00.0
> +* - SoC device name, for example- fsl-gmac0
> +* - vdev dpdk name, for example- net_[pcap0|null0|tap0]
> +*
> +* @param name
> +*  pci address or name of the device
> +* @return
> +*   - rte_eth_dev if sucessful
> +*   - NULL on failure
> +*/
> +struct rte_eth_dev*
> +rte_get_eth_dev_by_name(const char *name);
> +


Can you please move this to 'ethdev_driver.h'?

>   /**
>   * Get the device name from port ID. The device name is specified as below:
>   * - PCIe address (Domain:Bus:Device.Function), for example- 0000:02:00.0
> diff --git a/lib/ethdev/version.map b/lib/ethdev/version.map
> index c2fb0669a4..168898a27c 100644
> --- a/lib/ethdev/version.map
> +++ b/lib/ethdev/version.map
> @@ -128,6 +128,7 @@ DPDK_22 {
>   	rte_flow_isolate;
>   	rte_flow_query;
>   	rte_flow_validate;
> +	rte_get_eth_dev_by_name;
>   

And move this to 'INTERNAL' block?

>   	local: *;
>   };