Hi Jeff,
> -----Original Message-----
> From: dev [mailto:[email protected]] On Behalf Of Jeff Guo
> Sent: Monday, July 9, 2018 2:57 PM
> To: [email protected]; Richardson, Bruce
> <[email protected]>; Yigit, Ferruh <[email protected]>;
> Ananyev, Konstantin <[email protected]>;
> [email protected]; Wu, Jingjing <[email protected]>;
> [email protected]; [email protected]; [email protected]; Van
> Haaren, Harry <[email protected]>; Zhang, Qi Z
> <[email protected]>; He, Shaopeng <[email protected]>;
> Iremonger, Bernard <[email protected]>;
> [email protected]
> Cc: [email protected]; [email protected]; [email protected]; Guo,
> Jia <[email protected]>; Zhang, Helin <[email protected]>
> Subject: [dpdk-dev] [PATCH v2 1/3] net/ixgbe: enable hotplug detect in ixgbe
>
> This patch aim to enable hotplug detect in ixgbe pmd driver. Firstly it set
> the
> flags RTE_PCI_DRV_INTR_RMV in drv_flags to announce the hotplug ability,
> and then use rte_dev_event_callback_register to register the hotplug event
> callback to eal. When eal detect the hotplug event, it will call the callback
> to
> process it, if the event is hotplug remove, it will trigger the
> RTE_ETH_EVENT_INTR_RMV event into ethdev callback to let app process
> the hotplug for the ethdev.
>
> This is an example for other driver, that if any driver support hotplug
> feature
> could be use this way to enable hotplug detect.
>
> Signed-off-by: Jeff Guo <[email protected]>
> ---
> v2->v1:
> refine some doc.
> ---
> drivers/net/ixgbe/ixgbe_ethdev.c | 46
> +++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 45 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c
> b/drivers/net/ixgbe/ixgbe_ethdev.c
> index 87d2ad0..83ce026 100644
> --- a/drivers/net/ixgbe/ixgbe_ethdev.c
> +++ b/drivers/net/ixgbe/ixgbe_ethdev.c
> @@ -1534,6 +1534,47 @@ generate_random_mac_addr(struct ether_addr
> *mac_addr)
> memcpy(&mac_addr->addr_bytes[3], &random, 3); }
>
> +static void
> +eth_dev_event_callback(char *device_name, enum rte_dev_event_type
> type,
> + __rte_unused void *arg)
> +{
> + uint32_t pid;
> +
> + if (type >= RTE_DEV_EVENT_MAX) {
> + fprintf(stderr, "%s called upon invalid event %d\n",
> + __func__, type);
> + fflush(stderr);
> + }
> +
> + switch (type) {
> + case RTE_DEV_EVENT_REMOVE:
> + PMD_DRV_LOG(INFO, "The device: %s has been removed!\n",
> + device_name);
> +
> + if (!device_name)
> + return;
> +
> + for (pid = 0; pid < RTE_MAX_ETHPORTS; pid++) {
> + if (rte_eth_devices[pid].device) {
> + if (!strcmp(device_name,
> + rte_eth_devices[pid].device->name)) {
> + _rte_eth_dev_callback_process(
> + &rte_eth_devices[pid],
> + RTE_ETH_EVENT_INTR_RMV,
> NULL);
> + continue;
> + }
> + }
> + }
> + break;
> + case RTE_DEV_EVENT_ADD:
> + RTE_LOG(INFO, EAL, "The device: %s has been added!\n",
> + device_name);
> + break;
> + default:
> + break;
> + }
> +}
I don't get the point. Looks like this's a very common rte code. Why is it put
in ixgbe pmd?
