On Fri, 12 Jul 2019 09:55:46 +0200
Július Milan <jmilan....@gmail.com> wrote:
> Procedure xdp_get_channels_info was returning error code -1 in case of
> ioctl command SIOCETHTOOL was not supported. This patch sets return
> value back to 0 as it is valid case.
>
> Fixes: 339b88c6a9 ("net/af_xdp: support multi-queue")
>
> Signed-off-by: Július Milan <jmilan....@gmail.com>
> ---
> drivers/net/af_xdp/rte_eth_af_xdp.c | 10 +++++++---
> 1 file changed, 7 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/af_xdp/rte_eth_af_xdp.c
> b/drivers/net/af_xdp/rte_eth_af_xdp.c
> index ff8e90589..33352e10a 100644
> --- a/drivers/net/af_xdp/rte_eth_af_xdp.c
> +++ b/drivers/net/af_xdp/rte_eth_af_xdp.c
> @@ -852,9 +852,13 @@ xdp_get_channels_info(const char *if_name, int
> *max_queues,
> ifr.ifr_data = (void *)&channels;
> strncpy(ifr.ifr_name, if_name, IFNAMSIZ);
> ret = ioctl(fd, SIOCETHTOOL, &ifr);
> - if (ret && errno != EOPNOTSUPP) {
> - ret = -errno;
> - goto out;
> + if (ret) {
> + if (errno == EOPNOTSUPP) {
> + ret = 0;
> + } else {
> + ret = -errno;
> + goto out;
> + }
> }
>
> if (channels.max_combined == 0 || errno == EOPNOTSUPP) {
Still wrong, it doesn't set max_queues/combined_queues if errno == EOPNOTSUPP
