nfp: devlink: add extended ack report messages

Add descriptive error messages to common devlink failures to
be more user friendly.

Signed-off-by: Ryno Swart <ryno.swart@corigine.com>
Signed-off-by: Louis Peens <louis.peens@corigine.com>
Link: https://lore.kernel.org/r/20231206151209.20296-3-louis.peens@corigine.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_devlink.c b/drivers/net/ethernet/netronome/nfp/nfp_devlink.c
index 8c6954c..635d33c 100644 (file)
--- a/drivers/net/ethernet/netronome/nfp/nfp_devlink.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_devlink.c
@@ -75,8 +75,10 @@ nfp_devlink_port_split(struct devlink *devlink, struct devlink_port *port,
        if (ret)
                return ret;
 
-       if (eth_port.port_lanes % count)
+       if (eth_port.port_lanes % count) {
+               NL_SET_ERR_MSG_MOD(extack, "invalid count");
                return -EINVAL;
+       }
 
        /* Special case the 100G CXP -> 2x40G split */
        lanes = eth_port.port_lanes / count;
@@ -101,8 +103,10 @@ nfp_devlink_port_unsplit(struct devlink *devlink, struct devlink_port *port,
        if (ret)
                return ret;
 
-       if (!eth_port.is_split)
+       if (!eth_port.is_split) {
+               NL_SET_ERR_MSG_MOD(extack, "port is not split");
                return -EINVAL;
+       }
 
        /* Special case the 100G CXP -> 2x40G unsplit */
        lanes = eth_port.port_lanes;