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devlink: Prepare code to fill multiple port function attributes
Prepare code to fill zero or more port function optional attributes. Subsequent patch makes use of this to fill more port function attributes. Signed-off-by: Parav Pandit <parav@nvidia.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Reviewed-by: Vu Pham <vuhuong@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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7b8fc0103b
commit
1230d94820
1 changed files with 33 additions and 31 deletions
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@ -712,6 +712,31 @@ static int devlink_nl_port_attrs_put(struct sk_buff *msg,
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return 0;
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}
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static int
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devlink_port_fn_hw_addr_fill(struct devlink *devlink, const struct devlink_ops *ops,
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struct devlink_port *port, struct sk_buff *msg,
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struct netlink_ext_ack *extack, bool *msg_updated)
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{
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u8 hw_addr[MAX_ADDR_LEN];
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int hw_addr_len;
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int err;
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if (!ops->port_function_hw_addr_get)
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return 0;
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err = ops->port_function_hw_addr_get(devlink, port, hw_addr, &hw_addr_len, extack);
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if (err) {
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if (err == -EOPNOTSUPP)
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return 0;
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return err;
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}
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err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr);
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if (err)
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return err;
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*msg_updated = true;
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return 0;
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}
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static int
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devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port,
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struct netlink_ext_ack *extack)
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@ -719,36 +744,17 @@ devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *por
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struct devlink *devlink = port->devlink;
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const struct devlink_ops *ops;
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struct nlattr *function_attr;
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bool empty_nest = true;
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int err = 0;
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bool msg_updated = false;
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int err;
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function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION);
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if (!function_attr)
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return -EMSGSIZE;
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ops = devlink->ops;
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if (ops->port_function_hw_addr_get) {
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int hw_addr_len;
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u8 hw_addr[MAX_ADDR_LEN];
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err = ops->port_function_hw_addr_get(devlink, port, hw_addr, &hw_addr_len, extack);
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if (err == -EOPNOTSUPP) {
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/* Port function attributes are optional for a port. If port doesn't
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* support function attribute, returning -EOPNOTSUPP is not an error.
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*/
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err = 0;
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goto out;
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} else if (err) {
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goto out;
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}
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err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr);
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if (err)
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goto out;
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empty_nest = false;
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}
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out:
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if (err || empty_nest)
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err = devlink_port_fn_hw_addr_fill(devlink, ops, port, msg,
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extack, &msg_updated);
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if (err || !msg_updated)
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nla_nest_cancel(msg, function_attr);
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else
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nla_nest_end(msg, function_attr);
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@ -986,7 +992,6 @@ devlink_port_function_hw_addr_set(struct devlink *devlink, struct devlink_port *
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const struct devlink_ops *ops;
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const u8 *hw_addr;
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int hw_addr_len;
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int err;
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hw_addr = nla_data(attr);
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hw_addr_len = nla_len(attr);
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@ -1011,12 +1016,7 @@ devlink_port_function_hw_addr_set(struct devlink *devlink, struct devlink_port *
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return -EOPNOTSUPP;
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}
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err = ops->port_function_hw_addr_set(devlink, port, hw_addr, hw_addr_len, extack);
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if (err)
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return err;
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devlink_port_notify(port, DEVLINK_CMD_PORT_NEW);
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return 0;
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return ops->port_function_hw_addr_set(devlink, port, hw_addr, hw_addr_len, extack);
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}
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static int
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@ -1037,6 +1037,8 @@ devlink_port_function_set(struct devlink *devlink, struct devlink_port *port,
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if (attr)
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err = devlink_port_function_hw_addr_set(devlink, port, attr, extack);
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if (!err)
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devlink_port_notify(port, DEVLINK_CMD_PORT_NEW);
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return err;
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}
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