This is the JSON analogue of the transglobal table. By using the netlink_query_common function to query the available netlink attributes.
Signed-off-by: Alexander Sarmanow asarmanow@gmail.com --- Makefile | 1 + README.rst | 15 +++++++++ man/batctl.8 | 3 ++ transglobal_json.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 100 insertions(+) create mode 100644 transglobal_json.c
diff --git a/Makefile b/Makefile index 874dc2f..cea3271 100755 --- a/Makefile +++ b/Makefile @@ -72,6 +72,7 @@ $(eval $(call add_command,throughput_override,y)) $(eval $(call add_command,throughputmeter,y)) $(eval $(call add_command,traceroute,y)) $(eval $(call add_command,transglobal,y)) +$(eval $(call add_command,transglobal_json,y)) $(eval $(call add_command,translate,y)) $(eval $(call add_command,translocal,y))
diff --git a/README.rst b/README.rst index f0ce43a..905e313 100644 --- a/README.rst +++ b/README.rst @@ -687,6 +687,21 @@ Flags that mean: If any of the flags is not enabled, a '.' will substitute its symbol.
+batctl transglobal_json +======================= + +display the global translation JSON (analogue of the transglobal table) + +Usage:: + + batctl transglobal_json|tgj + +Example:: + + $ batctl translglobal_json + [{"orig_address":"fe:fe:00:00:01:01","tt_address":"33:33:00:00:00:01","tt_ttvn":3,"last_ttvn":3,"crc32":1916279217,"tt_vid":0,"tt_flags":0,"best":true},{"orig_address":"fe:fe:00:00:01:02","tt_address":"33:33:00:00:00:02","tt_ttvn":3,"last_ttvn":3,"crc32":1916279217,"tt_vid":0,"tt_flags":0}] + + batctl dat_cache =================
diff --git a/man/batctl.8 b/man/batctl.8 index 1130a81..97d5738 100644 --- a/man/batctl.8 +++ b/man/batctl.8 @@ -309,6 +309,9 @@ List of debug JSONs: .RS 10 - originators_json|oj .RE +.RS 10 +- transglobal_json|tgj +.RE .RE .br .IP "[\fBmeshif <netdev>\fP] \fBtranslate\fP|\fBt\fP \fBMAC_address\fP|\fBbat-host_name\fP|\fBhost_name\fP|\fBIP_address\fP" diff --git a/transglobal_json.c b/transglobal_json.c new file mode 100644 index 0000000..612ffb8 --- /dev/null +++ b/transglobal_json.c @@ -0,0 +1,81 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (C) B.A.T.M.A.N. contributors: + * + * Alexander Sarmanow asarmanow@gmail.com + * + * License-Filename: LICENSES/preferred/GPL-2.0 + */ + +#include <netinet/if_ether.h> +#include <netlink/netlink.h> +#include <netlink/genl/genl.h> +#include <netlink/genl/ctrl.h> +#include <stdio.h> +#include <stdlib.h> +#include <stdint.h> + +#include "batman_adv.h" +#include "debug.h" +#include "main.h" +#include "netlink.h" +#include "genl_json.h" + +static int transglobal_json_callback(struct nl_msg *msg, void *arg) +{ + struct nlquery_opts *query_opts = arg; + struct json_opts *json_opts; + struct nlattr *attrs[BATADV_ATTR_MAX+1]; + struct nlmsghdr *nlh = nlmsg_hdr(msg); + struct genlmsghdr *ghdr; + + json_opts = container_of(query_opts, struct json_opts, query_opts); + + if (!genlmsg_valid_hdr(nlh, 0)) { + fputs("Received invalid data from kernel.\n", stderr); + exit(1); + } + + ghdr = nlmsg_data(nlh); + + if (ghdr->cmd != BATADV_CMD_GET_TRANSTABLE_GLOBAL) + return NL_OK; + + if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0), + genlmsg_len(ghdr), batadv_netlink_policy)) { + fputs("Received invalid data from kernel.\n", stderr); + exit(1); + } + + netlink_print_json_entries(attrs, json_opts); + json_opts->is_first = 0; + + return NL_OK; +} + +static int netlink_print_transglobal_json(struct state *state) +{ + int ret; + struct json_opts json_opts = { + .is_first = 1, + .query_opts = { + .err = 0, + }, + }; + + putc('[', stdout); + ret = netlink_query_common(state, state->mesh_ifindex, + BATADV_CMD_GET_TRANSTABLE_GLOBAL, + transglobal_json_callback, + NLM_F_DUMP, &json_opts.query_opts); + puts("]\n"); + + return ret; +} + +static struct debug_json_data batctl_debug_json_transglobal = { + .netlink_fn = netlink_print_transglobal_json, +}; + +COMMAND_NAMED(DEBUGJSON, transglobal_json, "tgj", handle_debug_json, + COMMAND_FLAG_MESH_IFACE | COMMAND_FLAG_NETLINK, + &batctl_debug_json_transglobal, "");