[dpdk-dev] [PATCH v4 01/24] eal: introduce one device scan
Burakov, Anatoly
anatoly.burakov at intel.com
Tue Jun 26 13:47:34 CEST 2018
On 26-Jun-18 8:08 AM, Qi Zhang wrote:
> When hot plug a new device, it is not necessary to scan everything
> on the bus since the devname and devargs are already there. So new
> rte_bus ops "scan_one" is introduced, bus driver can implement this
> function to simplify the hotplug process.
>
> Signed-off-by: Qi Zhang <qi.z.zhang at intel.com>
> ---
>
<snip>
> + * NULL for unsuccessful scan
> + */
> +typedef struct rte_device *(*rte_bus_scan_one_t)(struct rte_devargs *devargs);
> +
> +/**
> * Implementation specific probe function which is responsible for linking
> * devices on that bus with applicable drivers.
> *
> @@ -204,6 +219,7 @@ struct rte_bus {
> TAILQ_ENTRY(rte_bus) next; /**< Next bus object in linked list */
> const char *name; /**< Name of the bus */
> rte_bus_scan_t scan; /**< Scan for devices attached to bus */
> + rte_bus_scan_one_t scan_one; /**< Scan one device using devargs */
> rte_bus_probe_t probe; /**< Probe devices on bus */
> rte_bus_find_device_t find_device; /**< Find a device on the bus */
> rte_bus_plug_t plug; /**< Probe single device for drivers */
>
Does changing this structure break ABI for bus drivers?
--
Thanks,
Anatoly
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