sysfs should be avoided for new settings of network interfaces. To still provide a common configuration infrastructure, all the existing settings subcommands also have to be reimplemented via generic netlink while still using sysfs as fallback.
The bridge_loop_avoidance implementation is using the commands BATADV_CMD_SET_MESH/BATADV_CMD_GET_MESH to set/get the configuration of the u8 (boolean) BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED attribute.
Signed-off-by: Sven Eckelmann sven@narfation.org --- Cc: Simon Wunderlich sw@simonwunderlich.de --- bridge_loop_avoidance.c | 46 +++++++++++++++++++++++++++++++++++++++-- 1 file changed, 44 insertions(+), 2 deletions(-)
diff --git a/bridge_loop_avoidance.c b/bridge_loop_avoidance.c index d53c278..aac83c5 100644 --- a/bridge_loop_avoidance.c +++ b/bridge_loop_avoidance.c @@ -21,13 +21,55 @@ */
#include "main.h" + +#include <errno.h> +#include <linux/genetlink.h> +#include <netlink/genl/genl.h> + +#include "batman_adv.h" +#include "netlink.h" #include "sys.h"
+static struct simple_boolean_data bridge_loop_avoidance; + +static int print_bridge_loop_avoidance(struct nl_msg *msg, void *arg) +{ + return sys_simple_print_boolean(msg, arg, + BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED); +} + +static int get_bridge_loop_avoidance(struct state *state) +{ + return sys_simple_nlquery(state, BATADV_CMD_GET_MESH, + NULL, print_bridge_loop_avoidance); +} + +static int set_attrs_bridge_loop_avoidance(struct nl_msg *msg, void *arg) +{ + struct state *state = arg; + struct settings_data *settings = state->cmd->arg; + struct simple_boolean_data *data = settings->data; + + nla_put_u8(msg, BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED, data->val); + + return 0; +} + +static int set_bridge_loop_avoidance(struct state *state) +{ + return sys_simple_nlquery(state, BATADV_CMD_SET_MESH, + set_attrs_bridge_loop_avoidance, NULL); +} + static struct settings_data batctl_settings_bridge_loop_avoidance = { .sysfs_name = "bridge_loop_avoidance", - .params = sysfs_param_enable, + .data = &bridge_loop_avoidance, + .parse = parse_simple_boolean, + .netlink_get = get_bridge_loop_avoidance, + .netlink_set = set_bridge_loop_avoidance, };
COMMAND_NAMED(SUBCOMMAND, bridge_loop_avoidance, "bl", handle_sys_setting, - COMMAND_FLAG_MESH_IFACE, &batctl_settings_bridge_loop_avoidance, + COMMAND_FLAG_MESH_IFACE | COMMAND_FLAG_NETLINK, + &batctl_settings_bridge_loop_avoidance, "[0|1] \tdisplay or modify bridge_loop_avoidance setting");