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Merge pull request #976 from FreifunkVogtland/batadv-netlink

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Switch from batman-adv v14/v15 debugfs to netlink
This commit is contained in:
Matthias Schiffer 2016-12-13 01:20:27 +01:00 committed by GitHub
commit 2796f66fcb
12 changed files with 1204 additions and 115 deletions
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2
package/gluon-mesh-batman-adv-core/Makefile
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@ -13,7 +13,7 @@ define Package/gluon-mesh-batman-adv-core
SECTION:=gluon
CATEGORY:=Gluon
TITLE:=Support for batman-adv meshing (core)
DEPENDS:=+gluon-core +libgluonutil +gluon-client-bridge +gluon-ebtables +firewall +libiwinfo +kmod-dummy +kmod-macvlan
DEPENDS:=+gluon-core +libgluonutil +gluon-client-bridge +gluon-ebtables +firewall +libiwinfo +kmod-dummy +kmod-macvlan +libnl-tiny
endef
define Build/Prepare

20
package/gluon-mesh-batman-adv-core/src/Makefile
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@ -2,5 +2,23 @@ all: respondd.so
CFLAGS += -Wall
respondd.so: respondd.c
ifeq ($(origin PKG_CONFIG), undefined)
PKG_CONFIG = pkg-config
ifeq ($(shell which $(PKG_CONFIG) 2>/dev/null),)
$(error $(PKG_CONFIG) not found)
endif
endif
ifeq ($(origin LIBNL_CFLAGS) $(origin LIBNL_LDLIBS), undefined undefined)
LIBNL_NAME ?= libnl-tiny
ifeq ($(shell $(PKG_CONFIG) --modversion $(LIBNL_NAME) 2>/dev/null),)
$(error No $(LIBNL_NAME) development libraries found!)
endif
LIBNL_CFLAGS += $(shell $(PKG_CONFIG) --cflags $(LIBNL_NAME))
LIBNL_LDLIBS += $(shell $(PKG_CONFIG) --libs $(LIBNL_NAME))
endif
CFLAGS += $(LIBNL_CFLAGS)
LDLIBS += $(LIBNL_LDLIBS)
respondd.so: respondd.c batadv-netlink.c
$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -shared -fPIC -D_GNU_SOURCE -o $@ $^ $(LDLIBS) -lgluonutil -liwinfo -luci

149
package/gluon-mesh-batman-adv-core/src/batadv-netlink.c Normal file
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@ -0,0 +1,149 @@
/*
* Copyright (C) 2009-2016 B.A.T.M.A.N. contributors:
*
* Marek Lindner <mareklindner@neomailbox.ch>, Andrew Lunn <andrew@lunn.ch>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA
*
*/
#include "batadv-netlink.h"
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <netlink/netlink.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/ctrl.h>
#include <net/ethernet.h>
#include "batman_adv.h"
#ifndef __maybe_unused
#define __maybe_unused __attribute__((unused))
#endif
struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = {
[BATADV_ATTR_HARD_IFINDEX] = { .type = NLA_U32 },
[BATADV_ATTR_ORIG_ADDRESS] = { .type = NLA_UNSPEC,
.minlen = ETH_ALEN,
.maxlen = ETH_ALEN },
[BATADV_ATTR_TT_FLAGS] = { .type = NLA_U32 },
[BATADV_ATTR_FLAG_BEST] = { .type = NLA_FLAG },
[BATADV_ATTR_LAST_SEEN_MSECS] = { .type = NLA_U32 },
[BATADV_ATTR_NEIGH_ADDRESS] = { .type = NLA_UNSPEC,
.minlen = ETH_ALEN,
.maxlen = ETH_ALEN },
[BATADV_ATTR_TQ] = { .type = NLA_U8 },
[BATADV_ATTR_ROUTER] = { .type = NLA_UNSPEC,
.minlen = ETH_ALEN,
.maxlen = ETH_ALEN },
};
static int nlquery_error_cb(struct sockaddr_nl *nla __maybe_unused,
struct nlmsgerr *nlerr, void *arg)
{
struct batadv_nlquery_opts *query_opts = arg;
query_opts->err = nlerr->error;
return NL_STOP;
}
static int nlquery_stop_cb(struct nl_msg *msg, void *arg)
{
struct nlmsghdr *nlh = nlmsg_hdr(msg);
struct batadv_nlquery_opts *query_opts = arg;
int *error = nlmsg_data(nlh);
if (*error)
query_opts->err = *error;
return NL_STOP;
}
int batadv_nl_query_common(const char *mesh_iface,
enum batadv_nl_commands nl_cmd,
nl_recvmsg_msg_cb_t callback, int flags,
struct batadv_nlquery_opts *query_opts)
{
struct nl_sock *sock;
struct nl_msg *msg;
struct nl_cb *cb;
int ifindex;
int family;
int ret;
query_opts->err = 0;
sock = nl_socket_alloc();
if (!sock)
return -ENOMEM;
ret = genl_connect(sock);
if (ret < 0) {
query_opts->err = ret;
goto err_free_sock;
}
family = genl_ctrl_resolve(sock, BATADV_NL_NAME);
if (family < 0) {
query_opts->err = -EOPNOTSUPP;
goto err_free_sock;
}
ifindex = if_nametoindex(mesh_iface);
if (!ifindex) {
query_opts->err = -ENODEV;
goto err_free_sock;
}
cb = nl_cb_alloc(NL_CB_DEFAULT);
if (!cb) {
query_opts->err = -ENOMEM;
goto err_free_sock;
}
nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, callback, query_opts);
nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, nlquery_stop_cb, query_opts);
nl_cb_err(cb, NL_CB_CUSTOM, nlquery_error_cb, query_opts);
msg = nlmsg_alloc();
if (!msg) {
query_opts->err = -ENOMEM;
goto err_free_cb;
}
genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, family, 0, flags,
nl_cmd, 1);
nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX, ifindex);
nl_send_auto_complete(sock, msg);
nlmsg_free(msg);
nl_recvmsgs(sock, cb);
err_free_cb:
nl_cb_put(cb);
err_free_sock:
nl_socket_free(sock);
return query_opts->err;
}

68
package/gluon-mesh-batman-adv-core/src/batadv-netlink.h Normal file
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@ -0,0 +1,68 @@
/*
* Copyright (C) 2009-2016 B.A.T.M.A.N. contributors:
*
* Marek Lindner <mareklindner@neomailbox.ch>, Andrew Lunn <andrew@lunn.ch>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA
*
*/
#ifndef _BATADV_NETLINK_H
#define _BATADV_NETLINK_H
#include <netlink/netlink.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/ctrl.h>
#include <stddef.h>
#include <stdbool.h>
#include "batman_adv.h"
struct batadv_nlquery_opts {
int err;
};
#ifndef ARRAY_SIZE
#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x)))
#endif
#ifndef container_of
#define container_of(ptr, type, member) __extension__ ({ \
const __typeof__(((type *)0)->member) *__pmember = (ptr); \
(type *)((char *)__pmember - offsetof(type, member)); })
#endif
int batadv_nl_query_common(const char *mesh_iface,
enum batadv_nl_commands nl_cmd,
nl_recvmsg_msg_cb_t callback, int flags,
struct batadv_nlquery_opts *query_opts);
static inline bool batadv_nl_missing_attrs(struct nlattr *attrs[],
const enum batadv_nl_attrs mandatory[],
size_t num)
{
size_t i;
for (i = 0; i < num; i++) {
if (!attrs[mandatory[i]])
return true;
}
return false;
}
extern struct nla_policy batadv_netlink_policy[];
#endif /* _BATADV_NETLINK_H */

208
package/gluon-mesh-batman-adv-core/src/batman_adv.h Normal file
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@ -0,0 +1,208 @@
/* Copyright (C) 2016 B.A.T.M.A.N. contributors:
*
* Matthias Schiffer
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _UAPI_LINUX_BATMAN_ADV_H_
#define _UAPI_LINUX_BATMAN_ADV_H_
#define BATADV_NL_NAME "batadv"
#define BATADV_NL_MCAST_GROUP_TPMETER "tpmeter"
/**
* enum batadv_tt_client_flags - TT client specific flags
* @BATADV_TT_CLIENT_DEL: the client has to be deleted from the table
* @BATADV_TT_CLIENT_ROAM: the client roamed to/from another node and the new
* update telling its new real location has not been received/sent yet
* @BATADV_TT_CLIENT_WIFI: this client is connected through a wifi interface.
* This information is used by the "AP Isolation" feature
* @BATADV_TT_CLIENT_ISOLA: this client is considered "isolated". This
* information is used by the Extended Isolation feature
* @BATADV_TT_CLIENT_NOPURGE: this client should never be removed from the table
* @BATADV_TT_CLIENT_NEW: this client has been added to the local table but has
* not been announced yet
* @BATADV_TT_CLIENT_PENDING: this client is marked for removal but it is kept
* in the table for one more originator interval for consistency purposes
* @BATADV_TT_CLIENT_TEMP: this global client has been detected to be part of
* the network but no nnode has already announced it
*
* Bits from 0 to 7 are called _remote flags_ because they are sent on the wire.
* Bits from 8 to 15 are called _local flags_ because they are used for local
* computations only.
*
* Bits from 4 to 7 - a subset of remote flags - are ensured to be in sync with
* the other nodes in the network. To achieve this goal these flags are included
* in the TT CRC computation.
*/
enum batadv_tt_client_flags {
BATADV_TT_CLIENT_DEL = (1 << 0),
BATADV_TT_CLIENT_ROAM = (1 << 1),
BATADV_TT_CLIENT_WIFI = (1 << 4),
BATADV_TT_CLIENT_ISOLA = (1 << 5),
BATADV_TT_CLIENT_NOPURGE = (1 << 8),
BATADV_TT_CLIENT_NEW = (1 << 9),
BATADV_TT_CLIENT_PENDING = (1 << 10),
BATADV_TT_CLIENT_TEMP = (1 << 11),
};
/**
* enum batadv_nl_attrs - batman-adv netlink attributes
*
* @BATADV_ATTR_UNSPEC: unspecified attribute to catch errors
* @BATADV_ATTR_VERSION: batman-adv version string
* @BATADV_ATTR_ALGO_NAME: name of routing algorithm
* @BATADV_ATTR_MESH_IFINDEX: index of the batman-adv interface
* @BATADV_ATTR_MESH_IFNAME: name of the batman-adv interface
* @BATADV_ATTR_MESH_ADDRESS: mac address of the batman-adv interface
* @BATADV_ATTR_HARD_IFINDEX: index of the non-batman-adv interface
* @BATADV_ATTR_HARD_IFNAME: name of the non-batman-adv interface
* @BATADV_ATTR_HARD_ADDRESS: mac address of the non-batman-adv interface
* @BATADV_ATTR_ORIG_ADDRESS: originator mac address
* @BATADV_ATTR_TPMETER_RESULT: result of run (see batadv_tp_meter_status)
* @BATADV_ATTR_TPMETER_TEST_TIME: time (msec) the run took
* @BATADV_ATTR_TPMETER_BYTES: amount of acked bytes during run
* @BATADV_ATTR_TPMETER_COOKIE: session cookie to match tp_meter session
* @BATADV_ATTR_PAD: attribute used for padding for 64-bit alignment
* @BATADV_ATTR_ACTIVE: Flag indicating if the hard interface is active
* @BATADV_ATTR_TT_ADDRESS: Client MAC address
* @BATADV_ATTR_TT_TTVN: Translation table version
* @BATADV_ATTR_TT_LAST_TTVN: Previous translation table version
* @BATADV_ATTR_TT_CRC32: CRC32 over translation table
* @BATADV_ATTR_TT_VID: VLAN ID
* @BATADV_ATTR_TT_FLAGS: Translation table client flags
* @BATADV_ATTR_FLAG_BEST: Flags indicating entry is the best
* @BATADV_ATTR_LAST_SEEN_MSECS: Time in milliseconds since last seen
* @BATADV_ATTR_NEIGH_ADDRESS: Neighbour MAC address
* @BATADV_ATTR_TQ: TQ to neighbour
* @BATADV_ATTR_THROUGHPUT: Estimated throughput to Neighbour
* @BATADV_ATTR_BANDWIDTH_UP: Reported uplink bandwidth
* @BATADV_ATTR_BANDWIDTH_DOWN: Reported downlink bandwidth
* @BATADV_ATTR_ROUTER: Gateway router MAC address
* @BATADV_ATTR_BLA_OWN: Flag indicating own originator
* @BATADV_ATTR_BLA_ADDRESS: Bridge loop avoidance claim MAC address
* @BATADV_ATTR_BLA_VID: BLA VLAN ID
* @BATADV_ATTR_BLA_BACKBONE: BLA gateway originator MAC address
* @BATADV_ATTR_BLA_CRC: BLA CRC
* @__BATADV_ATTR_AFTER_LAST: internal use
* @NUM_BATADV_ATTR: total number of batadv_nl_attrs available
* @BATADV_ATTR_MAX: highest attribute number currently defined
*/
enum batadv_nl_attrs {
BATADV_ATTR_UNSPEC,
BATADV_ATTR_VERSION,
BATADV_ATTR_ALGO_NAME,
BATADV_ATTR_MESH_IFINDEX,
BATADV_ATTR_MESH_IFNAME,
BATADV_ATTR_MESH_ADDRESS,
BATADV_ATTR_HARD_IFINDEX,
BATADV_ATTR_HARD_IFNAME,
BATADV_ATTR_HARD_ADDRESS,
BATADV_ATTR_ORIG_ADDRESS,
BATADV_ATTR_TPMETER_RESULT,
BATADV_ATTR_TPMETER_TEST_TIME,
BATADV_ATTR_TPMETER_BYTES,
BATADV_ATTR_TPMETER_COOKIE,
BATADV_ATTR_PAD,
BATADV_ATTR_ACTIVE,
BATADV_ATTR_TT_ADDRESS,
BATADV_ATTR_TT_TTVN,
BATADV_ATTR_TT_LAST_TTVN,
BATADV_ATTR_TT_CRC32,
BATADV_ATTR_TT_VID,
BATADV_ATTR_TT_FLAGS,
BATADV_ATTR_FLAG_BEST,
BATADV_ATTR_LAST_SEEN_MSECS,
BATADV_ATTR_NEIGH_ADDRESS,
BATADV_ATTR_TQ,
BATADV_ATTR_THROUGHPUT,
BATADV_ATTR_BANDWIDTH_UP,
BATADV_ATTR_BANDWIDTH_DOWN,
BATADV_ATTR_ROUTER,
BATADV_ATTR_BLA_OWN,
BATADV_ATTR_BLA_ADDRESS,
BATADV_ATTR_BLA_VID,
BATADV_ATTR_BLA_BACKBONE,
BATADV_ATTR_BLA_CRC,
/* add attributes above here, update the policy in netlink.c */
__BATADV_ATTR_AFTER_LAST,
NUM_BATADV_ATTR = __BATADV_ATTR_AFTER_LAST,
BATADV_ATTR_MAX = __BATADV_ATTR_AFTER_LAST - 1
};
/**
* enum batadv_nl_commands - supported batman-adv netlink commands
*
* @BATADV_CMD_UNSPEC: unspecified command to catch errors
* @BATADV_CMD_GET_MESH_INFO: Query basic information about batman-adv device
* @BATADV_CMD_TP_METER: Start a tp meter session
* @BATADV_CMD_TP_METER_CANCEL: Cancel a tp meter session
* @BATADV_CMD_GET_ROUTING_ALGOS: Query the list of routing algorithms.
* @BATADV_CMD_GET_HARDIFS: Query list of hard interfaces
* @BATADV_CMD_GET_TRANSTABLE_LOCAL: Query list of local translations
* @BATADV_CMD_GET_TRANSTABLE_GLOBAL Query list of global translations
* @BATADV_CMD_GET_ORIGINATORS: Query list of originators
* @BATADV_CMD_GET_NEIGHBORS: Query list of neighbours
* @BATADV_CMD_GET_GATEWAYS: Query list of gateways
* @BATADV_CMD_GET_BLA_CLAIM: Query list of bridge loop avoidance claims
* @BATADV_CMD_GET_BLA_BACKBONE: Query list of bridge loop avoidance backbones
* @__BATADV_CMD_AFTER_LAST: internal use
* @BATADV_CMD_MAX: highest used command number
*/
enum batadv_nl_commands {
BATADV_CMD_UNSPEC,
BATADV_CMD_GET_MESH_INFO,
BATADV_CMD_TP_METER,
BATADV_CMD_TP_METER_CANCEL,
BATADV_CMD_GET_ROUTING_ALGOS,
BATADV_CMD_GET_HARDIFS,
BATADV_CMD_GET_TRANSTABLE_LOCAL,
BATADV_CMD_GET_TRANSTABLE_GLOBAL,
BATADV_CMD_GET_ORIGINATORS,
BATADV_CMD_GET_NEIGHBORS,
BATADV_CMD_GET_GATEWAYS,
BATADV_CMD_GET_BLA_CLAIM,
BATADV_CMD_GET_BLA_BACKBONE,
/* add new commands above here */
__BATADV_CMD_AFTER_LAST,
BATADV_CMD_MAX = __BATADV_CMD_AFTER_LAST - 1
};
/**
* enum batadv_tp_meter_reason - reason of a tp meter test run stop
* @BATADV_TP_REASON_COMPLETE: sender finished tp run
* @BATADV_TP_REASON_CANCEL: sender was stopped during run
* @BATADV_TP_REASON_DST_UNREACHABLE: receiver could not be reached or didn't
* answer
* @BATADV_TP_REASON_RESEND_LIMIT: (unused) sender retry reached limit
* @BATADV_TP_REASON_ALREADY_ONGOING: test to or from the same node already
* ongoing
* @BATADV_TP_REASON_MEMORY_ERROR: test was stopped due to low memory
* @BATADV_TP_REASON_CANT_SEND: failed to send via outgoing interface
* @BATADV_TP_REASON_TOO_MANY: too many ongoing sessions
*/
enum batadv_tp_meter_reason {
BATADV_TP_REASON_COMPLETE = 3,
BATADV_TP_REASON_CANCEL = 4,
/* error status >= 128 */
BATADV_TP_REASON_DST_UNREACHABLE = 128,
BATADV_TP_REASON_RESEND_LIMIT = 129,
BATADV_TP_REASON_ALREADY_ONGOING = 130,
BATADV_TP_REASON_MEMORY_ERROR = 131,
BATADV_TP_REASON_CANT_SEND = 132,
BATADV_TP_REASON_TOO_MANY = 133,
};
#endif /* _UAPI_LINUX_BATMAN_ADV_H_ */

303
package/gluon-mesh-batman-adv-core/src/respondd.c
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@ -51,11 +51,28 @@
#include <linux/if_addr.h>
#include <linux/sockios.h>
#include "batadv-netlink.h"
#define _STRINGIFY(s) #s
#define STRINGIFY(s) _STRINGIFY(s)
struct neigh_netlink_opts {
struct json_object *interfaces;
struct batadv_nlquery_opts query_opts;
};
struct gw_netlink_opts {
struct json_object *obj;
struct batadv_nlquery_opts query_opts;
};
struct clients_netlink_opts {
size_t total;
size_t wifi;
struct batadv_nlquery_opts query_opts;
};
static struct json_object * get_addresses(void) {
FILE *f = fopen("/proc/net/if_inet6", "r");
@ -223,29 +240,70 @@ static struct json_object * respondd_provider_nodeinfo(void) {
return ret;
}
static const enum batadv_nl_attrs gateways_mandatory[] = {
BATADV_ATTR_ORIG_ADDRESS,
BATADV_ATTR_ROUTER,
};
static int parse_gw_list_netlink_cb(struct nl_msg *msg, void *arg)
{
struct nlattr *attrs[BATADV_ATTR_MAX+1];
struct nlmsghdr *nlh = nlmsg_hdr(msg);
struct batadv_nlquery_opts *query_opts = arg;
struct genlmsghdr *ghdr;
uint8_t *orig;
uint8_t *router;
struct gw_netlink_opts *opts;
char addr[18];
opts = container_of(query_opts, struct gw_netlink_opts, query_opts);
if (!genlmsg_valid_hdr(nlh, 0))
return NL_OK;
ghdr = nlmsg_data(nlh);
if (ghdr->cmd != BATADV_CMD_GET_GATEWAYS)
return NL_OK;
if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0),
genlmsg_len(ghdr), batadv_netlink_policy))
return NL_OK;
if (batadv_nl_missing_attrs(attrs, gateways_mandatory,
ARRAY_SIZE(gateways_mandatory)))
return NL_OK;
if (!attrs[BATADV_ATTR_FLAG_BEST])
return NL_OK;
orig = nla_data(attrs[BATADV_ATTR_ORIG_ADDRESS]);
router = nla_data(attrs[BATADV_ATTR_ROUTER]);
sprintf(addr, "%02x:%02x:%02x:%02x:%02x:%02x",
orig[0], orig[1], orig[2], orig[3], orig[4], orig[5]);
json_object_object_add(opts->obj, "gateway", json_object_new_string(addr));
sprintf(addr, "%02x:%02x:%02x:%02x:%02x:%02x",
router[0], router[1], router[2], router[3], router[4], router[5]);
json_object_object_add(opts->obj, "gateway_nexthop", json_object_new_string(addr));
return NL_STOP;
}
static void add_gateway(struct json_object *obj) {
FILE *f = fopen("/sys/kernel/debug/batman_adv/bat0/gateways", "r");
if (!f)
return;
struct gw_netlink_opts opts = {
.obj = obj,
.query_opts = {
.err = 0,
},
};
char *line = NULL;
size_t len = 0;
while (getline(&line, &len, f) >= 0) {
char addr[18];
char nexthop[18];
if (sscanf(line, "=> %17[0-9a-fA-F:] ( %*u) %17[0-9a-fA-F:]", addr, nexthop) != 2)
continue;
json_object_object_add(obj, "gateway", json_object_new_string(addr));
json_object_object_add(obj, "gateway_nexthop", json_object_new_string(nexthop));
break;
}
free(line);
fclose(f);
batadv_nl_query_common("bat0", BATADV_CMD_GET_GATEWAYS,
parse_gw_list_netlink_cb, NLM_F_DUMP,
&opts.query_opts);
}
static inline bool ethtool_ioctl(int fd, struct ifreq *ifr, void *data) {
@ -421,39 +479,69 @@ static void count_stations(size_t *wifi24, size_t *wifi5) {
uci_free_context(ctx);
}
static const enum batadv_nl_attrs clients_mandatory[] = {
BATADV_ATTR_TT_FLAGS,
};
static int parse_clients_list_netlink_cb(struct nl_msg *msg, void *arg)
{
struct nlattr *attrs[BATADV_ATTR_MAX+1];
struct nlmsghdr *nlh = nlmsg_hdr(msg);
struct batadv_nlquery_opts *query_opts = arg;
struct genlmsghdr *ghdr;
struct clients_netlink_opts *opts;
uint32_t flags;
opts = container_of(query_opts, struct clients_netlink_opts, query_opts);
if (!genlmsg_valid_hdr(nlh, 0))
return NL_OK;
ghdr = nlmsg_data(nlh);
if (ghdr->cmd != BATADV_CMD_GET_TRANSTABLE_LOCAL)
return NL_OK;
if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0),
genlmsg_len(ghdr), batadv_netlink_policy))
return NL_OK;
if (batadv_nl_missing_attrs(attrs, clients_mandatory,
ARRAY_SIZE(clients_mandatory)))
return NL_OK;
flags = nla_get_u32(attrs[BATADV_ATTR_TT_FLAGS]);
if (flags & BATADV_TT_CLIENT_NOPURGE)
return NL_OK;
if (flags & BATADV_TT_CLIENT_WIFI)
opts->wifi++;
opts->total++;
return NL_OK;
}
static struct json_object * get_clients(void) {
size_t total = 0, wifi = 0, wifi24 = 0, wifi5 = 0;
size_t wifi24 = 0, wifi5 = 0;
struct clients_netlink_opts opts = {
.total = 0,
.wifi = 0,
.query_opts = {
.err = 0,
},
};
FILE *f = fopen("/sys/kernel/debug/batman_adv/bat0/transtable_local", "r");
if (!f)
return NULL;
char *line = NULL;
size_t len = 0;
while (getline(&line, &len, f) >= 0) {
char flags[16];
if (sscanf(line, " * %*[^[] [%15[^]]]", flags) != 1)
continue;
if (strchr(flags, 'P'))
continue;
total++;
if (strchr(flags, 'W'))
wifi++;
}
free(line);
fclose(f);
batadv_nl_query_common("bat0", BATADV_CMD_GET_TRANSTABLE_LOCAL,
parse_clients_list_netlink_cb, NLM_F_DUMP,
&opts.query_opts);
count_stations(&wifi24, &wifi5);
struct json_object *ret = json_object_new_object();
json_object_object_add(ret, "total", json_object_new_int(total));
json_object_object_add(ret, "wifi", json_object_new_int(wifi));
json_object_object_add(ret, "total", json_object_new_int(opts.total));
json_object_object_add(ret, "wifi", json_object_new_int(opts.wifi));
json_object_object_add(ret, "wifi24", json_object_new_int(wifi24));
json_object_object_add(ret, "wifi5", json_object_new_int(wifi5));
return ret;
@ -492,49 +580,104 @@ static struct json_object * ifnames2addrs(struct json_object *interfaces) {
return ret;
}
static struct json_object * get_batadv(void) {
FILE *f = fopen("/sys/kernel/debug/batman_adv/bat0/originators", "r");
if (!f)
return NULL;
static const enum batadv_nl_attrs parse_orig_list_mandatory[] = {
BATADV_ATTR_ORIG_ADDRESS,
BATADV_ATTR_NEIGH_ADDRESS,
BATADV_ATTR_TQ,
BATADV_ATTR_HARD_IFINDEX,
BATADV_ATTR_LAST_SEEN_MSECS,
};
char *line = NULL;
size_t len = 0;
static int parse_orig_list_netlink_cb(struct nl_msg *msg, void *arg)
{
struct nlattr *attrs[BATADV_ATTR_MAX+1];
struct nlmsghdr *nlh = nlmsg_hdr(msg);
struct batadv_nlquery_opts *query_opts = arg;
struct genlmsghdr *ghdr;
uint8_t *orig;
uint8_t *dest;
uint8_t tq;
uint32_t hardif;
uint32_t lastseen;
char ifname_buf[IF_NAMESIZE], *ifname;
struct neigh_netlink_opts *opts;
char mac1[18];
struct json_object *interfaces = json_object_new_object();
opts = container_of(query_opts, struct neigh_netlink_opts, query_opts);
while (getline(&line, &len, f) >= 0) {
char mac1[18], mac2[18];
/* IF_NAMESIZE would be enough, but adding 1 here is simpler than subtracting 1 in the format string */
char ifname[IF_NAMESIZE+1];
double lastseen;
int tq;
if (!genlmsg_valid_hdr(nlh, 0))
return NL_OK;
if (sscanf(line,
"%17[0-9a-fA-F:] %lfs ( %i ) %17[0-9a-fA-F:] [ %"STRINGIFY(IF_NAMESIZE)"[^]] ]",
mac1, &lastseen, &tq, mac2, ifname) != 5)
continue;
ghdr = nlmsg_data(nlh);
if (strcmp(mac1, mac2))
continue;
if (ghdr->cmd != BATADV_CMD_GET_ORIGINATORS)
return NL_OK;
struct json_object *interface;
if (!json_object_object_get_ex(interfaces, ifname, &interface)) {
interface = json_object_new_object();
json_object_object_add(interfaces, ifname, interface);
}
if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0),
genlmsg_len(ghdr), batadv_netlink_policy))
return NL_OK;
struct json_object *obj = json_object_new_object();
json_object_object_add(obj, "tq", json_object_new_int(tq));
struct json_object *jso = json_object_new_double(lastseen);
json_object_set_serializer(jso, json_object_double_to_json_string, "%.3f", NULL);
json_object_object_add(obj, "lastseen", jso);
json_object_object_add(interface, mac1, obj);
if (batadv_nl_missing_attrs(attrs, parse_orig_list_mandatory,
ARRAY_SIZE(parse_orig_list_mandatory)))
return NL_OK;
if (!attrs[BATADV_ATTR_FLAG_BEST])
return NL_OK;
orig = nla_data(attrs[BATADV_ATTR_ORIG_ADDRESS]);
dest = nla_data(attrs[BATADV_ATTR_NEIGH_ADDRESS]);
tq = nla_get_u8(attrs[BATADV_ATTR_TQ]);
hardif = nla_get_u32(attrs[BATADV_ATTR_HARD_IFINDEX]);
lastseen = nla_get_u32(attrs[BATADV_ATTR_LAST_SEEN_MSECS]);
if (memcmp(orig, dest, 6) != 0)
return NL_OK;
ifname = if_indextoname(hardif, ifname_buf);
if (!ifname)
return NL_OK;
sprintf(mac1, "%02x:%02x:%02x:%02x:%02x:%02x",
orig[0], orig[1], orig[2], orig[3], orig[4], orig[5]);
struct json_object *obj = json_object_new_object();
if (!obj)
return NL_OK;
struct json_object *interface;
if (!json_object_object_get_ex(opts->interfaces, ifname, &interface)) {
interface = json_object_new_object();
json_object_object_add(opts->interfaces, ifname, interface);
}
fclose(f);
free(line);
json_object_object_add(obj, "tq", json_object_new_int(tq));
json_object_object_add(obj, "lastseen", json_object_new_double(lastseen / 1000.));
json_object_object_add(interface, mac1, obj);
return ifnames2addrs(interfaces);
return NL_OK;
}
static struct json_object * get_batadv(void) {
struct neigh_netlink_opts opts = {
.query_opts = {
.err = 0,
},
};
int ret;
opts.interfaces = json_object_new_object();
if (!opts.interfaces)
return NULL;
ret = batadv_nl_query_common("bat0", BATADV_CMD_GET_ORIGINATORS,
parse_orig_list_netlink_cb, NLM_F_DUMP,
&opts.query_opts);
if (ret < 0) {
json_object_put(opts.interfaces);
return NULL;
}
return ifnames2addrs(opts.interfaces);
}
static struct json_object * get_wifi_neighbours(const char *ifname) {

2
package/gluon-status-page-api/Makefile
View File

@ -14,7 +14,7 @@ define Package/gluon-status-page-api
SECTION:=gluon
CATEGORY:=Gluon
TITLE:=API for gluon-status-page
DEPENDS:=+gluon-core +uhttpd +sse-multiplex +gluon-neighbour-info +gluon-respondd +libiwinfo +libjson-c
DEPENDS:=+gluon-core +uhttpd +sse-multiplex +gluon-neighbour-info +gluon-respondd +libiwinfo +libjson-c +libnl-tiny
endef
define Build/Prepare

21
package/gluon-status-page-api/src/Makefile
View File

@ -1,12 +1,29 @@
CFLAGS += -std=c99 -D_BSD_SOURCE
CPPFLAGS += -D_GNU_SOURCE
ifeq ($(origin PKG_CONFIG), undefined)
PKG_CONFIG = pkg-config
ifeq ($(shell which $(PKG_CONFIG) 2>/dev/null),)
$(error $(PKG_CONFIG) not found)
endif
endif
ifeq ($(origin LIBNL_CFLAGS) $(origin LIBNL_LDLIBS), undefined undefined)
LIBNL_NAME ?= libnl-tiny
ifeq ($(shell $(PKG_CONFIG) --modversion $(LIBNL_NAME) 2>/dev/null),)
$(error No $(LIBNL_NAME) development libraries found!)
endif
LIBNL_CFLAGS += $(shell $(PKG_CONFIG) --cflags $(LIBNL_NAME))
LIBNL_LDLIBS += $(shell $(PKG_CONFIG) --libs $(LIBNL_NAME))
endif
CFLAGS_JSONC = $(shell pkg-config --cflags json-c)
LDFLAGS_JSONC = $(shell pkg-config --libs json-c)
all: neighbours-batadv stations respondd.so
neighbours-batadv: neighbours-batadv.c
$(CC) $(CPPFLAGS) $(CFLAGS) $(CFLAGS_JSONC) $(LDFLAGS) $(LDFLAGS_JSONC) -Wall -o $@ $^ $(LDLIBS)
neighbours-batadv: neighbours-batadv.c batadv-netlink.c
$(CC) $(CPPFLAGS) $(CFLAGS) $(CFLAGS_JSONC) $(LIBNL_CFLAGS) $(LDFLAGS) $(LDFLAGS_JSONC) $(LIBNL_LDLIBS) -Wall -o $@ $^ $(LDLIBS)
stations: stations.c
$(CC) $(CPPFLAGS) $(CFLAGS) $(CFLAGS_JSONC) $(LDFLAGS) $(LDFLAGS_JSONC) -Wall -o $@ $^ $(LDLIBS) -liwinfo

145
package/gluon-status-page-api/src/batadv-netlink.c Normal file
View File

@ -0,0 +1,145 @@
/*
* Copyright (C) 2009-2016 B.A.T.M.A.N. contributors:
*
* Marek Lindner <mareklindner@neomailbox.ch>, Andrew Lunn <andrew@lunn.ch>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA
*
*/
#include "batadv-netlink.h"
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <netlink/netlink.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/ctrl.h>
#include <net/ethernet.h>
#include "batman_adv.h"
#ifndef __maybe_unused
#define __maybe_unused __attribute__((unused))
#endif
struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = {
[BATADV_ATTR_HARD_IFINDEX] = { .type = NLA_U32 },
[BATADV_ATTR_ORIG_ADDRESS] = { .type = NLA_UNSPEC,
.minlen = ETH_ALEN,
.maxlen = ETH_ALEN },
[BATADV_ATTR_FLAG_BEST] = { .type = NLA_FLAG },
[BATADV_ATTR_LAST_SEEN_MSECS] = { .type = NLA_U32 },
[BATADV_ATTR_NEIGH_ADDRESS] = { .type = NLA_UNSPEC,
.minlen = ETH_ALEN,
.maxlen = ETH_ALEN },
[BATADV_ATTR_TQ] = { .type = NLA_U8 },
};
static int nlquery_error_cb(struct sockaddr_nl *nla __maybe_unused,
struct nlmsgerr *nlerr, void *arg)
{
struct batadv_nlquery_opts *query_opts = arg;
query_opts->err = nlerr->error;
return NL_STOP;
}
static int nlquery_stop_cb(struct nl_msg *msg, void *arg)
{
struct nlmsghdr *nlh = nlmsg_hdr(msg);
struct batadv_nlquery_opts *query_opts = arg;
int *error = nlmsg_data(nlh);
if (*error)
query_opts->err = *error;
return NL_STOP;
}
int batadv_nl_query_common(const char *mesh_iface,
enum batadv_nl_commands nl_cmd,
nl_recvmsg_msg_cb_t callback, int flags,
struct batadv_nlquery_opts *query_opts)
{
struct nl_sock *sock;
struct nl_msg *msg;
struct nl_cb *cb;
int ifindex;
int family;
int ret;
query_opts->err = 0;
sock = nl_socket_alloc();
if (!sock)
return -ENOMEM;
ret = genl_connect(sock);
if (ret < 0) {
query_opts->err = ret;
goto err_free_sock;
}
family = genl_ctrl_resolve(sock, BATADV_NL_NAME);
if (family < 0) {
query_opts->err = -EOPNOTSUPP;
goto err_free_sock;
}
ifindex = if_nametoindex(mesh_iface);
if (!ifindex) {
query_opts->err = -ENODEV;
goto err_free_sock;
}
cb = nl_cb_alloc(NL_CB_DEFAULT);
if (!cb) {
query_opts->err = -ENOMEM;
goto err_free_sock;
}
nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, callback, query_opts);
nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, nlquery_stop_cb, query_opts);
nl_cb_err(cb, NL_CB_CUSTOM, nlquery_error_cb, query_opts);
msg = nlmsg_alloc();
if (!msg) {
query_opts->err = -ENOMEM;
goto err_free_cb;
}
genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, family, 0, flags,
nl_cmd, 1);
nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX, ifindex);
nl_send_auto_complete(sock, msg);
nlmsg_free(msg);
nl_recvmsgs(sock, cb);
err_free_cb:
nl_cb_put(cb);
err_free_sock:
nl_socket_free(sock);
return query_opts->err;
}

68
package/gluon-status-page-api/src/batadv-netlink.h Normal file
View File

@ -0,0 +1,68 @@
/*
* Copyright (C) 2009-2016 B.A.T.M.A.N. contributors:
*
* Marek Lindner <mareklindner@neomailbox.ch>, Andrew Lunn <andrew@lunn.ch>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA
*
*/
#ifndef _BATADV_NETLINK_H
#define _BATADV_NETLINK_H
#include <netlink/netlink.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/ctrl.h>
#include <stddef.h>
#include <stdbool.h>
#include "batman_adv.h"
struct batadv_nlquery_opts {
int err;
};
#ifndef ARRAY_SIZE
#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x)))
#endif
#ifndef container_of
#define container_of(ptr, type, member) __extension__ ({ \
const __typeof__(((type *)0)->member) *__pmember = (ptr); \
(type *)((char *)__pmember - offsetof(type, member)); })
#endif
int batadv_nl_query_common(const char *mesh_iface,
enum batadv_nl_commands nl_cmd,
nl_recvmsg_msg_cb_t callback, int flags,
struct batadv_nlquery_opts *query_opts);
static inline bool batadv_nl_missing_attrs(struct nlattr *attrs[],
const enum batadv_nl_attrs mandatory[],
size_t num)
{
size_t i;
for (i = 0; i < num; i++) {
if (!attrs[mandatory[i]])
return true;
}
return false;
}
extern struct nla_policy batadv_netlink_policy[];
#endif /* _BATADV_NETLINK_H */

208
package/gluon-status-page-api/src/batman_adv.h Normal file
View File

@ -0,0 +1,208 @@
/* Copyright (C) 2016 B.A.T.M.A.N. contributors:
*
* Matthias Schiffer
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _UAPI_LINUX_BATMAN_ADV_H_
#define _UAPI_LINUX_BATMAN_ADV_H_
#define BATADV_NL_NAME "batadv"
#define BATADV_NL_MCAST_GROUP_TPMETER "tpmeter"
/**
* enum batadv_tt_client_flags - TT client specific flags
* @BATADV_TT_CLIENT_DEL: the client has to be deleted from the table
* @BATADV_TT_CLIENT_ROAM: the client roamed to/from another node and the new
* update telling its new real location has not been received/sent yet
* @BATADV_TT_CLIENT_WIFI: this client is connected through a wifi interface.
* This information is used by the "AP Isolation" feature
* @BATADV_TT_CLIENT_ISOLA: this client is considered "isolated". This
* information is used by the Extended Isolation feature
* @BATADV_TT_CLIENT_NOPURGE: this client should never be removed from the table
* @BATADV_TT_CLIENT_NEW: this client has been added to the local table but has
* not been announced yet
* @BATADV_TT_CLIENT_PENDING: this client is marked for removal but it is kept
* in the table for one more originator interval for consistency purposes
* @BATADV_TT_CLIENT_TEMP: this global client has been detected to be part of
* the network but no nnode has already announced it
*
* Bits from 0 to 7 are called _remote flags_ because they are sent on the wire.
* Bits from 8 to 15 are called _local flags_ because they are used for local
* computations only.
*
* Bits from 4 to 7 - a subset of remote flags - are ensured to be in sync with
* the other nodes in the network. To achieve this goal these flags are included
* in the TT CRC computation.
*/
enum batadv_tt_client_flags {
BATADV_TT_CLIENT_DEL = (1 << 0),
BATADV_TT_CLIENT_ROAM = (1 << 1),
BATADV_TT_CLIENT_WIFI = (1 << 4),
BATADV_TT_CLIENT_ISOLA = (1 << 5),
BATADV_TT_CLIENT_NOPURGE = (1 << 8),
BATADV_TT_CLIENT_NEW = (1 << 9),
BATADV_TT_CLIENT_PENDING = (1 << 10),
BATADV_TT_CLIENT_TEMP = (1 << 11),
};
/**
* enum batadv_nl_attrs - batman-adv netlink attributes
*
* @BATADV_ATTR_UNSPEC: unspecified attribute to catch errors
* @BATADV_ATTR_VERSION: batman-adv version string
* @BATADV_ATTR_ALGO_NAME: name of routing algorithm
* @BATADV_ATTR_MESH_IFINDEX: index of the batman-adv interface
* @BATADV_ATTR_MESH_IFNAME: name of the batman-adv interface
* @BATADV_ATTR_MESH_ADDRESS: mac address of the batman-adv interface
* @BATADV_ATTR_HARD_IFINDEX: index of the non-batman-adv interface
* @BATADV_ATTR_HARD_IFNAME: name of the non-batman-adv interface
* @BATADV_ATTR_HARD_ADDRESS: mac address of the non-batman-adv interface
* @BATADV_ATTR_ORIG_ADDRESS: originator mac address
* @BATADV_ATTR_TPMETER_RESULT: result of run (see batadv_tp_meter_status)
* @BATADV_ATTR_TPMETER_TEST_TIME: time (msec) the run took
* @BATADV_ATTR_TPMETER_BYTES: amount of acked bytes during run
* @BATADV_ATTR_TPMETER_COOKIE: session cookie to match tp_meter session
* @BATADV_ATTR_PAD: attribute used for padding for 64-bit alignment
* @BATADV_ATTR_ACTIVE: Flag indicating if the hard interface is active
* @BATADV_ATTR_TT_ADDRESS: Client MAC address
* @BATADV_ATTR_TT_TTVN: Translation table version
* @BATADV_ATTR_TT_LAST_TTVN: Previous translation table version
* @BATADV_ATTR_TT_CRC32: CRC32 over translation table
* @BATADV_ATTR_TT_VID: VLAN ID
* @BATADV_ATTR_TT_FLAGS: Translation table client flags
* @BATADV_ATTR_FLAG_BEST: Flags indicating entry is the best
* @BATADV_ATTR_LAST_SEEN_MSECS: Time in milliseconds since last seen
* @BATADV_ATTR_NEIGH_ADDRESS: Neighbour MAC address
* @BATADV_ATTR_TQ: TQ to neighbour
* @BATADV_ATTR_THROUGHPUT: Estimated throughput to Neighbour
* @BATADV_ATTR_BANDWIDTH_UP: Reported uplink bandwidth
* @BATADV_ATTR_BANDWIDTH_DOWN: Reported downlink bandwidth
* @BATADV_ATTR_ROUTER: Gateway router MAC address
* @BATADV_ATTR_BLA_OWN: Flag indicating own originator
* @BATADV_ATTR_BLA_ADDRESS: Bridge loop avoidance claim MAC address
* @BATADV_ATTR_BLA_VID: BLA VLAN ID
* @BATADV_ATTR_BLA_BACKBONE: BLA gateway originator MAC address
* @BATADV_ATTR_BLA_CRC: BLA CRC
* @__BATADV_ATTR_AFTER_LAST: internal use
* @NUM_BATADV_ATTR: total number of batadv_nl_attrs available
* @BATADV_ATTR_MAX: highest attribute number currently defined
*/
enum batadv_nl_attrs {
BATADV_ATTR_UNSPEC,
BATADV_ATTR_VERSION,
BATADV_ATTR_ALGO_NAME,
BATADV_ATTR_MESH_IFINDEX,
BATADV_ATTR_MESH_IFNAME,
BATADV_ATTR_MESH_ADDRESS,
BATADV_ATTR_HARD_IFINDEX,
BATADV_ATTR_HARD_IFNAME,
BATADV_ATTR_HARD_ADDRESS,
BATADV_ATTR_ORIG_ADDRESS,
BATADV_ATTR_TPMETER_RESULT,
BATADV_ATTR_TPMETER_TEST_TIME,
BATADV_ATTR_TPMETER_BYTES,
BATADV_ATTR_TPMETER_COOKIE,
BATADV_ATTR_PAD,
BATADV_ATTR_ACTIVE,
BATADV_ATTR_TT_ADDRESS,
BATADV_ATTR_TT_TTVN,
BATADV_ATTR_TT_LAST_TTVN,
BATADV_ATTR_TT_CRC32,
BATADV_ATTR_TT_VID,
BATADV_ATTR_TT_FLAGS,
BATADV_ATTR_FLAG_BEST,
BATADV_ATTR_LAST_SEEN_MSECS,
BATADV_ATTR_NEIGH_ADDRESS,
BATADV_ATTR_TQ,
BATADV_ATTR_THROUGHPUT,
BATADV_ATTR_BANDWIDTH_UP,
BATADV_ATTR_BANDWIDTH_DOWN,
BATADV_ATTR_ROUTER,
BATADV_ATTR_BLA_OWN,
BATADV_ATTR_BLA_ADDRESS,
BATADV_ATTR_BLA_VID,
BATADV_ATTR_BLA_BACKBONE,
BATADV_ATTR_BLA_CRC,
/* add attributes above here, update the policy in netlink.c */
__BATADV_ATTR_AFTER_LAST,
NUM_BATADV_ATTR = __BATADV_ATTR_AFTER_LAST,
BATADV_ATTR_MAX = __BATADV_ATTR_AFTER_LAST - 1
};
/**
* enum batadv_nl_commands - supported batman-adv netlink commands
*
* @BATADV_CMD_UNSPEC: unspecified command to catch errors
* @BATADV_CMD_GET_MESH_INFO: Query basic information about batman-adv device
* @BATADV_CMD_TP_METER: Start a tp meter session
* @BATADV_CMD_TP_METER_CANCEL: Cancel a tp meter session
* @BATADV_CMD_GET_ROUTING_ALGOS: Query the list of routing algorithms.
* @BATADV_CMD_GET_HARDIFS: Query list of hard interfaces
* @BATADV_CMD_GET_TRANSTABLE_LOCAL: Query list of local translations
* @BATADV_CMD_GET_TRANSTABLE_GLOBAL Query list of global translations
* @BATADV_CMD_GET_ORIGINATORS: Query list of originators
* @BATADV_CMD_GET_NEIGHBORS: Query list of neighbours
* @BATADV_CMD_GET_GATEWAYS: Query list of gateways
* @BATADV_CMD_GET_BLA_CLAIM: Query list of bridge loop avoidance claims
* @BATADV_CMD_GET_BLA_BACKBONE: Query list of bridge loop avoidance backbones
* @__BATADV_CMD_AFTER_LAST: internal use
* @BATADV_CMD_MAX: highest used command number
*/
enum batadv_nl_commands {
BATADV_CMD_UNSPEC,
BATADV_CMD_GET_MESH_INFO,
BATADV_CMD_TP_METER,
BATADV_CMD_TP_METER_CANCEL,
BATADV_CMD_GET_ROUTING_ALGOS,
BATADV_CMD_GET_HARDIFS,
BATADV_CMD_GET_TRANSTABLE_LOCAL,
BATADV_CMD_GET_TRANSTABLE_GLOBAL,
BATADV_CMD_GET_ORIGINATORS,
BATADV_CMD_GET_NEIGHBORS,
BATADV_CMD_GET_GATEWAYS,
BATADV_CMD_GET_BLA_CLAIM,
BATADV_CMD_GET_BLA_BACKBONE,
/* add new commands above here */
__BATADV_CMD_AFTER_LAST,
BATADV_CMD_MAX = __BATADV_CMD_AFTER_LAST - 1
};
/**
* enum batadv_tp_meter_reason - reason of a tp meter test run stop
* @BATADV_TP_REASON_COMPLETE: sender finished tp run
* @BATADV_TP_REASON_CANCEL: sender was stopped during run
* @BATADV_TP_REASON_DST_UNREACHABLE: receiver could not be reached or didn't
* answer
* @BATADV_TP_REASON_RESEND_LIMIT: (unused) sender retry reached limit
* @BATADV_TP_REASON_ALREADY_ONGOING: test to or from the same node already
* ongoing
* @BATADV_TP_REASON_MEMORY_ERROR: test was stopped due to low memory
* @BATADV_TP_REASON_CANT_SEND: failed to send via outgoing interface
* @BATADV_TP_REASON_TOO_MANY: too many ongoing sessions
*/
enum batadv_tp_meter_reason {
BATADV_TP_REASON_COMPLETE = 3,
BATADV_TP_REASON_CANCEL = 4,
/* error status >= 128 */
BATADV_TP_REASON_DST_UNREACHABLE = 128,
BATADV_TP_REASON_RESEND_LIMIT = 129,
BATADV_TP_REASON_ALREADY_ONGOING = 130,
BATADV_TP_REASON_MEMORY_ERROR = 131,
BATADV_TP_REASON_CANT_SEND = 132,
BATADV_TP_REASON_TOO_MANY = 133,
};
#endif /* _UAPI_LINUX_BATMAN_ADV_H_ */

125
package/gluon-status-page-api/src/neighbours-batadv.c
View File

@ -4,45 +4,110 @@
#include <json-c/json.h>
#include <net/if.h>
#include "batadv-netlink.h"
#define STR(x) #x
#define XSTR(x) STR(x)
struct neigh_netlink_opts {
struct json_object *obj;
struct batadv_nlquery_opts query_opts;
};
static const enum batadv_nl_attrs parse_orig_list_mandatory[] = {
BATADV_ATTR_ORIG_ADDRESS,
BATADV_ATTR_NEIGH_ADDRESS,
BATADV_ATTR_TQ,
BATADV_ATTR_HARD_IFINDEX,
BATADV_ATTR_LAST_SEEN_MSECS,
};
static int parse_orig_list_netlink_cb(struct nl_msg *msg, void *arg)
{
struct nlattr *attrs[BATADV_ATTR_MAX+1];
struct nlmsghdr *nlh = nlmsg_hdr(msg);
struct batadv_nlquery_opts *query_opts = arg;
struct genlmsghdr *ghdr;
uint8_t *orig;
uint8_t *dest;
uint8_t tq;
uint32_t hardif;
uint32_t lastseen;
char ifname_buf[IF_NAMESIZE], *ifname;
struct neigh_netlink_opts *opts;
char mac1[18];
opts = container_of(query_opts, struct neigh_netlink_opts, query_opts);
if (!genlmsg_valid_hdr(nlh, 0))
return NL_OK;
ghdr = nlmsg_data(nlh);
if (ghdr->cmd != BATADV_CMD_GET_ORIGINATORS)
return NL_OK;
if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0),
genlmsg_len(ghdr), batadv_netlink_policy))
return NL_OK;
if (batadv_nl_missing_attrs(attrs, parse_orig_list_mandatory,
ARRAY_SIZE(parse_orig_list_mandatory)))
return NL_OK;
if (!attrs[BATADV_ATTR_FLAG_BEST])
return NL_OK;
orig = nla_data(attrs[BATADV_ATTR_ORIG_ADDRESS]);
dest = nla_data(attrs[BATADV_ATTR_NEIGH_ADDRESS]);
tq = nla_get_u8(attrs[BATADV_ATTR_TQ]);
hardif = nla_get_u32(attrs[BATADV_ATTR_HARD_IFINDEX]);
lastseen = nla_get_u32(attrs[BATADV_ATTR_LAST_SEEN_MSECS]);
if (memcmp(orig, dest, 6) != 0)
return NL_OK;
ifname = if_indextoname(hardif, ifname_buf);
if (!ifname)
return NL_OK;
sprintf(mac1, "%02x:%02x:%02x:%02x:%02x:%02x",
orig[0], orig[1], orig[2], orig[3], orig[4], orig[5]);
struct json_object *neigh = json_object_new_object();
if (!neigh)
return NL_OK;
json_object_object_add(neigh, "tq", json_object_new_int(tq));
json_object_object_add(neigh, "lastseen", json_object_new_double(lastseen / 1000.));
json_object_object_add(neigh, "ifname", json_object_new_string(ifname));
json_object_object_add(opts->obj, mac1, neigh);
return NL_OK;
}
static json_object *neighbours(void) {
struct json_object *obj = json_object_new_object();
struct neigh_netlink_opts opts = {
.query_opts = {
.err = 0,
},
};
int ret;
FILE *f;
f = fopen("/sys/kernel/debug/batman_adv/bat0/originators" , "r");
if (f == NULL)
opts.obj = json_object_new_object();
if (!opts.obj)
return NULL;
while (!feof(f)) {
char mac1[18];
char mac2[18];
char ifname[IF_NAMESIZE+1];
int tq;
double lastseen;
int count = fscanf(f, "%17s%*[\t ]%lfs%*[\t (]%d) %17s%*[[ ]%" XSTR(IF_NAMESIZE) "[^]]]", mac1, &lastseen, &tq, mac2, ifname);
if (count != 5)
continue;
if (strcmp(mac1, mac2) == 0) {
struct json_object *neigh = json_object_new_object();
json_object_object_add(neigh, "tq", json_object_new_int(tq));
json_object_object_add(neigh, "lastseen", json_object_new_double(lastseen));
json_object_object_add(neigh, "ifname", json_object_new_string(ifname));
json_object_object_add(obj, mac1, neigh);
}
ret = batadv_nl_query_common("bat0", BATADV_CMD_GET_ORIGINATORS,
parse_orig_list_netlink_cb, NLM_F_DUMP,
&opts.query_opts);
if (ret < 0) {
json_object_put(opts.obj);
return NULL;
}
fclose(f);
return obj;
return opts.obj;
}
int main(void) {