devlink: Fix param cmode driverinit for string type

Driverinit configuration mode value is held by devlink to enable the
driver fetch the value after reload command. In case the param type is
string devlink should copy the value from driver string buffer to
devlink string buffer on devlink_param_driverinit_value_set() and
vice-versa on devlink_param_driverinit_value_get().

Fixes: ec01aeb1803e ("devlink: Add support for get/set driverinit value")
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/devlink.c b/net/core/devlink.c
index d808af7a5c529c1c51a7b0251d69c01756bf1d2a..1a0de16771977d094db7cb85cbb3d96d056f598d 100644 (file)
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -3105,7 +3105,10 @@ static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
                return -EOPNOTSUPP;
 
        if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) {
-               param_item->driverinit_value = value;
+               if (param->type == DEVLINK_PARAM_TYPE_STRING)
+                       strcpy(param_item->driverinit_value.vstr, value.vstr);
+               else
+                       param_item->driverinit_value = value;
                param_item->driverinit_value_valid = true;
        } else {
                if (!param->set)
@@ -4545,7 +4548,10 @@ int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
                                              DEVLINK_PARAM_CMODE_DRIVERINIT))
                return -EOPNOTSUPP;
 
-       *init_val = param_item->driverinit_value;
+       if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
+               strcpy(init_val->vstr, param_item->driverinit_value.vstr);
+       else
+               *init_val = param_item->driverinit_value;
 
        return 0;
 }
@@ -4576,7 +4582,10 @@ int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
                                              DEVLINK_PARAM_CMODE_DRIVERINIT))
                return -EOPNOTSUPP;
 
-       param_item->driverinit_value = init_val;
+       if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
+               strcpy(param_item->driverinit_value.vstr, init_val.vstr);
+       else
+               param_item->driverinit_value = init_val;
        param_item->driverinit_value_valid = true;
 
        devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_NEW);