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 multicast_mode implementation is using the commands
BATADV_CMD_SET_MESH/BATADV_CMD_GET_MESH to set/get the configuration of the
u8 (boolean) BATADV_ATTR_MULTICAST_FORCEFLOOD_ENABLED attribute and print
its reverse as multicast_mode.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
---
Cc: Linus Lüssing <linus.luessing@c0d3.blue>
---
multicast_mode.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 64 insertions(+), 2 deletions(-)
@@ -21,13 +21,75 @@
*/
#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 multicast_mode;
+
+static int print_multicast_mode(struct nl_msg *msg, void *arg)
+{
+ struct nlattr *attrs[BATADV_ATTR_MAX + 1];
+ struct nlmsghdr *nlh = nlmsg_hdr(msg);
+ struct genlmsghdr *ghdr;
+ int *result = arg;
+
+ if (!genlmsg_valid_hdr(nlh, 0))
+ return NL_OK;
+
+ ghdr = nlmsg_data(nlh);
+
+ if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0),
+ genlmsg_len(ghdr), batadv_netlink_policy)) {
+ return NL_OK;
+ }
+
+ if (!attrs[BATADV_ATTR_MULTICAST_FORCEFLOOD_ENABLED])
+ return NL_OK;
+
+ printf("%s\n", !nla_get_u8(attrs[BATADV_ATTR_MULTICAST_FORCEFLOOD_ENABLED]) ? "enabled" : "disabled");
+
+ *result = 0;
+ return NL_STOP;
+}
+
+static int get_multicast_mode(struct state *state)
+{
+ return sys_simple_nlquery(state, BATADV_CMD_GET_MESH,
+ NULL, print_multicast_mode);
+}
+
+static int set_attrs_multicast_mode(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_MULTICAST_FORCEFLOOD_ENABLED, !data->val);
+
+ return 0;
+}
+
+static int set_multicast_mode(struct state *state)
+{
+ return sys_simple_nlquery(state, BATADV_CMD_SET_MESH,
+ set_attrs_multicast_mode, NULL);
+}
+
static struct settings_data batctl_settings_multicast_mode = {
.sysfs_name = "multicast_mode",
- .params = sysfs_param_enable,
+ .data = &multicast_mode,
+ .parse = parse_simple_boolean,
+ .netlink_get = get_multicast_mode,
+ .netlink_set = set_multicast_mode,
};
COMMAND_NAMED(SUBCOMMAND, multicast_mode, "mm", handle_sys_setting,
- COMMAND_FLAG_MESH_IFACE, &batctl_settings_multicast_mode,
+ COMMAND_FLAG_MESH_IFACE | COMMAND_FLAG_NETLINK,
+ &batctl_settings_multicast_mode,
"[0|1] \tdisplay or modify multicast_mode setting");