[dpdk-dev] [PATCH] eal: Fix device registration on FreeBSD

[Shreyansh Jain]

On Wednesday 22 March 2017 12:02 AM, Ben Walker wrote:
> The FreeBSD implementation wasn't registering new devices
> with the device framework on start up. However, common
> code attempts to unregister them on shutdown which causes
> a SEGFAULT. This fix makes the FreeBSD code do the same
> thing as the Linux code for registration.
>
> Signed-off-by: Ben Walker <benjamin.walker at intel.com>
> ---
>  lib/librte_eal/bsdapp/eal/eal_pci.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/lib/librte_eal/bsdapp/eal/eal_pci.c b/lib/librte_eal/bsdapp/eal/eal_pci.c
> index 3a5c315..16a1743 100644
> --- a/lib/librte_eal/bsdapp/eal/eal_pci.c
> +++ b/lib/librte_eal/bsdapp/eal/eal_pci.c
> @@ -314,6 +314,7 @@ pci_scan_one(int dev_pci_fd, struct pci_conf *conf)
>
>  	/* device is valid, add in list (sorted) */
>  	if (TAILQ_EMPTY(&pci_device_list)) {
> +		rte_eal_device_insert(&dev->device);
>  		TAILQ_INSERT_TAIL(&pci_device_list, dev, next);
>  	}
>  	else {
> @@ -326,7 +327,7 @@ pci_scan_one(int dev_pci_fd, struct pci_conf *conf)
>  				continue;
>  			else if (ret < 0) {
>  				TAILQ_INSERT_BEFORE(dev2, dev, next);
> -				return 0;
> +				rte_eal_device_insert(&dev->device);
>  			} else { /* already registered */
>  				dev2->kdrv = dev->kdrv;
>  				dev2->max_vfs = dev->max_vfs;
> @@ -334,9 +335,10 @@ pci_scan_one(int dev_pci_fd, struct pci_conf *conf)
>  					dev->mem_resource,
>  					sizeof(dev->mem_resource));
>  				free(dev);
> -				return 0;
>  			}
> +			return 0;
>  		}
> +		rte_eal_device_insert(&dev->device);
>  		TAILQ_INSERT_TAIL(&pci_device_list, dev, next);
>  	}
>
>

I can't vouch for BSD as I don't have that environment to verify. But, 
the patch looks fine to me as compared to Linux changes.

so, if my Ack makes sense:

Acked-by: Shreyansh Jain <shreyansh.jain at nxp.com>