* [B.A.T.M.A.N.] [PATCH 2/2] batctl: Use netlink when available, rather than debugfs
2016-04-28 20:54 [B.A.T.M.A.N.] [PATCH 0/2] batctl: Netlink support Andrew Lunn
2016-04-28 20:54 ` [B.A.T.M.A.N.] [PATCH 1/2] batctl: Document a network namespaces example Andrew Lunn
@ 2016-04-28 20:54 ` Andrew Lunn
2016-04-29 5:55 ` Sven Eckelmann
2016-04-29 6:12 ` Sven Eckelmann
1 sibling, 2 replies; 7+ messages in thread
From: Andrew Lunn @ 2016-04-28 20:54 UTC (permalink / raw)
To: B.A.T.M.A.N
The kernel has gained support for exporting information via netlink.
Use this when available, rather than debugfs. Netlink has the
advantage of being network name space aware, where as debugfs is not.
If netlink is not available, batctl will fall back to debugfs, so
should be backwards compatible with older kernel versions.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
---
Makefile | 20 +-
debug.c | 19 +-
debug.h | 4 +-
functions.c | 11 +
functions.h | 1 +
main.h | 1 +
netlink.c | 810 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
7 files changed, 862 insertions(+), 4 deletions(-)
create mode 100644 netlink.c
diff --git a/Makefile b/Makefile
index b82c0c6..debca29 100755
--- a/Makefile
+++ b/Makefile
@@ -24,7 +24,7 @@ export CONFIG_BATCTL_BISECT=n
# batctl build
BINARY_NAME = batctl
-OBJ = main.o bat-hosts.o functions.o sys.o debug.o ping.o traceroute.o tcpdump.o hash.o debugfs.o ioctl.o list-batman.o translate.o
+OBJ = main.o bat-hosts.o functions.o sys.o debug.o ping.o traceroute.o tcpdump.o hash.o debugfs.o ioctl.o list-batman.o translate.o netlink.o
OBJ_BISECT = bisect_iv.o
MANPAGE = man/batctl.8
@@ -43,6 +43,13 @@ ifndef V
endif
endif
+KERNELPATH ?= /lib/modules/$(shell uname -r)/build
+# sanity check: does KERNELPATH exist?
+ifeq ($(shell cd $(KERNELPATH) && pwd),)
+$(warning $(KERNELPATH) is missing, please set KERNELPATH)
+endif
+CFLAGS += -I $(KERNELPATH)/include/uapi/linux/
+
ifeq ($(origin PKG_CONFIG), undefined)
PKG_CONFIG = pkg-config
ifeq ($(shell which $(PKG_CONFIG) 2>/dev/null),)
@@ -61,6 +68,17 @@ endif
CFLAGS += $(LIBNL_CFLAGS)
LDLIBS += $(LIBNL_LDLIBS)
+ifeq ($(origin LIBNL_GENL_CFLAGS) $(origin LIBNL_GENL_LDLIBS), undefined undefined)
+ LIBNL_GENL_NAME ?= libnl-genl-3.0
+ ifeq ($(shell $(PKG_CONFIG) --modversion $(LIBNL_GENL_NAME) 2>/dev/null),)
+ $(error No $(LIBNL_GENL_NAME) development libraries found!)
+ endif
+ LIBNL_GENL_CFLAGS += $(shell $(PKG_CONFIG) --cflags $(LIBNL_GENL_NAME))
+ LIBNL_GENL_LDLIBS += $(shell $(PKG_CONFIG) --libs $(LIBNL_GENL_NAME))
+endif
+CFLAGS += $(LIBNL_GENL_CFLAGS)
+LDLIBS += $(LIBNL_GENL_LDLIBS)
+
# standard build tools
ifeq ($(CONFIG_BATCTL_BISECT),y)
OBJ += $(OBJ_BISECT)
diff --git a/debug.c b/debug.c
index 3db3ed9..5d08b42 100644
--- a/debug.c
+++ b/debug.c
@@ -23,10 +23,12 @@
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
+#include <errno.h>
#include "debug.h"
#include "debugfs.h"
#include "functions.h"
+#include "netlink.h"
#include "sys.h"
const struct debug_table_data batctl_debug_tables[BATCTL_TABLE_NUM] = {
@@ -35,36 +37,42 @@ const struct debug_table_data batctl_debug_tables[BATCTL_TABLE_NUM] = {
.opt_short = "n",
.debugfs_name = "neighbors",
.header_lines = 2,
+ .netlink_fn = netlink_print_neighbors,
},
{
.opt_long = "originators",
.opt_short = "o",
.debugfs_name = "originators",
.header_lines = 2,
+ .netlink_fn = netlink_print_originators,
},
{
.opt_long = "gateways",
.opt_short = "gwl",
.debugfs_name = "gateways",
.header_lines = 1,
+ .netlink_fn = netlink_print_gateways,
},
{
.opt_long = "translocal",
.opt_short = "tl",
.debugfs_name = "transtable_local",
.header_lines = 2,
+ .netlink_fn = netlink_print_translocal,
},
{
.opt_long = "transglobal",
.opt_short = "tg",
.debugfs_name = "transtable_global",
.header_lines = 2,
+ .netlink_fn = netlink_print_transglobal,
},
{
.opt_long = "claimtable",
.opt_short = "cl",
.debugfs_name = "bla_claim_table",
.header_lines = 2,
+ .netlink_fn = netlink_print_bla_claim,
},
{
.opt_long = "backbonetable",
@@ -115,7 +123,7 @@ int handle_debug_table(char *mesh_iface, int debug_table, int argc, char **argv)
char *orig_iface = NULL;
float orig_timeout = 0.0f;
float watch_interval = 1;
- opterr = 0;
+ int err;
while ((optchar = getopt(argc, argv, "hnw:t:Humi:")) != -1) {
switch (optchar) {
@@ -220,12 +228,19 @@ int handle_debug_table(char *mesh_iface, int debug_table, int argc, char **argv)
debugfs_make_path(DEBUG_BATIF_PATH_FMT "/", orig_iface, full_path, sizeof(full_path));
else
debugfs_make_path(DEBUG_BATIF_PATH_FMT "/", mesh_iface, full_path, sizeof(full_path));
+
+ if (batctl_debug_tables[debug_table].netlink_fn) {
+ err = batctl_debug_tables[debug_table].netlink_fn(
+ mesh_iface, read_opt, orig_timeout, watch_interval);
+ if (err != EOPNOTSUPP)
+ return err;
+ }
return read_file(full_path, (char *)batctl_debug_tables[debug_table].debugfs_name,
read_opt, orig_timeout, watch_interval,
batctl_debug_tables[debug_table].header_lines);
}
-int print_routing_algos(void) {
+int debug_print_routing_algos(void) {
char full_path[MAX_PATH+1];
char *debugfs_mnt;
diff --git a/debug.h b/debug.h
index df65f50..b09def7 100644
--- a/debug.h
+++ b/debug.h
@@ -48,13 +48,15 @@ struct debug_table_data {
const char opt_short[OPT_SHORT_MAX_LEN];
const char debugfs_name[DEBUG_TABLE_PATH_MAX_LEN];
size_t header_lines;
+ int (*netlink_fn)(char *mesh_iface, int read_opt,
+ float orig_timeout, float watch_interval);
};
extern const struct debug_table_data batctl_debug_tables[BATCTL_TABLE_NUM];
int handle_debug_table(char *mesh_iface, int debug_table, int argc, char **argv);
int log_print(char *mesh_iface, int argc, char **argv);
-int print_routing_algos(void);
+int debug_print_routing_algos(void);
int print_vis_info(char *mesh_iface);
#endif
diff --git a/functions.c b/functions.c
index be8f8b0..df7d159 100644
--- a/functions.c
+++ b/functions.c
@@ -52,6 +52,7 @@
#include "sys.h"
#include "debug.h"
#include "debugfs.h"
+#include "netlink.h"
static struct timeval start_time;
static char *host_name;
@@ -849,3 +850,13 @@ err:
return arg.vid;
}
+
+int print_routing_algos(void)
+{
+ int err;
+
+ err = netlink_print_routing_algos();
+ if (err == EOPNOTSUPP)
+ err = debug_print_routing_algos();
+ return err;
+}
diff --git a/functions.h b/functions.h
index d0b05b9..1e6cfec 100644
--- a/functions.h
+++ b/functions.h
@@ -44,6 +44,7 @@ struct ether_addr *translate_mac(char *mesh_iface, struct ether_addr *mac);
struct ether_addr *resolve_mac(const char *asc);
int vlan_get_link(const char *ifname, char **parent);
+int print_routing_algos(void);
extern char *line_ptr;
enum {
diff --git a/main.h b/main.h
index 81f223c..a05d1f0 100644
--- a/main.h
+++ b/main.h
@@ -47,6 +47,7 @@
#endif
#define __packed __attribute((packed)) /* linux kernel compat */
+#define __unused __attribute__((unused))
#define BIT(nr) (1UL << (nr)) /* linux kernel compat */
typedef uint8_t u8; /* linux kernel compat */
diff --git a/netlink.c b/netlink.c
new file mode 100644
index 0000000..cddc42a
--- /dev/null
+++ b/netlink.c
@@ -0,0 +1,810 @@
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <net/if.h>
+#include <netlink/netlink.h>
+#include <netlink/genl/genl.h>
+#include <netlink/genl/ctrl.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include "bat-hosts.h"
+#include "batman_adv.h"
+#include "functions.h"
+#include "main.h"
+
+struct print_opts {
+ int read_opt;
+ float orig_timeout;
+ float watch_interval;
+};
+
+static int last_err;
+
+static int print_error(struct sockaddr_nl *nla __unused,
+ struct nlmsgerr *nlerr,
+ void *arg __unused)
+{
+ if (nlerr->error != -EOPNOTSUPP)
+ fprintf(stderr, "Error received: %s\n",
+ strerror(-nlerr->error));
+
+ last_err = -nlerr->error;
+
+ return NL_STOP;
+}
+
+static int stop_callback(struct nl_msg *msg, void *arg __unused)
+{
+ struct nlmsghdr *nlh = nlmsg_hdr(msg);
+ int *error = nlmsg_data(nlh);
+
+ if (*error)
+ fprintf(stderr, "Error received: %s\n", strerror(-*error));
+
+ return NL_STOP;
+}
+
+static int info_callback(struct nl_msg *msg, void *arg __unused)
+{
+ struct nlattr *attrs[BATADV_ATTR_MAX+1];
+ struct nlmsghdr *nlh = nlmsg_hdr(msg);
+ struct genlmsghdr *ghdr;
+ const uint8_t *primary_mac ;
+ const char *primary_if;
+ const char *algo_name;
+ const char *mesh_name;
+ const char *version;
+
+ if (!genlmsg_valid_hdr(nlh, 0)) {
+ fputs("Received invalid data from kernel.", stderr);
+ exit(1);
+ }
+
+ ghdr = nlmsg_data(nlh);
+
+ if (ghdr->cmd != BATADV_CMD_GET_MESH_INFO)
+ return NL_OK;
+
+ if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0),
+ genlmsg_len(ghdr), NULL)) {
+ fputs("Received invalid data from kernel.", stderr);
+ exit(1);
+ }
+
+ mesh_name = nla_get_string(attrs[BATADV_ATTR_MESH_IFNAME]);
+
+ if (attrs[BATADV_ATTR_HARD_IFNAME]) {
+ version = nla_get_string(attrs[BATADV_ATTR_VERSION]);
+ algo_name = nla_get_string(attrs[BATADV_ATTR_ALGO_NAME]);
+ primary_if = nla_get_string(attrs[BATADV_ATTR_HARD_IFNAME]);
+ primary_mac = nla_data(attrs[BATADV_ATTR_HARD_ADDRESS]);
+
+ printf("[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%02x:%02x:%02x:%02x:%02x:%02x (%s %s)]\n",
+ version, primary_if,
+ primary_mac[0], primary_mac[1], primary_mac[2],
+ primary_mac[3], primary_mac[4], primary_mac[5],
+ mesh_name, algo_name);
+ } else {
+ printf("BATMAN mesh %s disabled\n", mesh_name);
+ }
+
+ return NL_STOP;
+}
+
+static void netlink_print_info(int ifindex)
+{
+ struct nl_sock *sock;
+ struct nl_msg *msg;
+ struct nl_cb *cb;
+ int family;
+
+ sock = nl_socket_alloc();
+ genl_connect(sock);
+
+ family = genl_ctrl_resolve(sock, BATADV_NL_NAME);
+ if (family < 0) {
+ return;
+ }
+
+ msg = nlmsg_alloc();
+ genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, family, 0, 0,
+ BATADV_CMD_GET_MESH_INFO, 1);
+
+ nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX, ifindex);
+
+ nl_send_auto_complete(sock, msg);
+
+ nlmsg_free(msg);
+
+ cb = nl_cb_alloc(NL_CB_DEFAULT);
+ nl_cb_set (cb, NL_CB_VALID, NL_CB_CUSTOM, info_callback, NULL);
+ nl_cb_err(cb, NL_CB_CUSTOM, print_error, NULL);
+
+ nl_recvmsgs(sock, cb);
+
+ nl_socket_free(sock);
+}
+
+static int routing_algos_callback(struct nl_msg *msg, void *arg __unused)
+{
+ struct nlattr *attrs[BATADV_ATTR_MAX+1];
+ struct nlmsghdr *nlh = nlmsg_hdr(msg);
+ struct genlmsghdr *ghdr;
+
+ if (!genlmsg_valid_hdr(nlh, 0)) {
+ fputs("Received invalid data from kernel.", stderr);
+ exit(1);
+ }
+
+ ghdr = nlmsg_data(nlh);
+
+ if (ghdr->cmd != BATADV_CMD_GET_ROUTING_ALGOS)
+ return NL_OK;
+
+ if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0),
+ genlmsg_len(ghdr), NULL)) {
+ fputs("Received invalid data from kernel.", stderr);
+ exit(1);
+ }
+
+ const char *algo_name = nla_get_string(attrs[BATADV_ATTR_ALGO_NAME]);
+
+ printf(" * %s\n", algo_name);
+
+ return NL_OK;
+}
+
+int netlink_print_routing_algos(void)
+{
+ struct nl_sock *sock;
+ struct nl_msg *msg;
+ struct nl_cb *cb;
+ int family;
+
+ sock = nl_socket_alloc();
+ genl_connect(sock);
+
+ family = genl_ctrl_resolve(sock, BATADV_NL_NAME);
+ if (family < 0) {
+ return EOPNOTSUPP;
+ }
+
+ msg = nlmsg_alloc();
+ genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, family, 0, NLM_F_DUMP,
+ BATADV_CMD_GET_ROUTING_ALGOS, 1);
+
+ nl_send_auto_complete(sock, msg);
+
+ nlmsg_free(msg);
+
+ cb = nl_cb_alloc(NL_CB_DEFAULT);
+ nl_cb_set (cb, NL_CB_VALID, NL_CB_CUSTOM, routing_algos_callback,
+ NULL);
+ nl_cb_set (cb, NL_CB_FINISH, NL_CB_CUSTOM, stop_callback, NULL);
+ nl_cb_err(cb, NL_CB_CUSTOM, print_error, NULL);
+
+ printf("Available routing algorithms:\n");
+
+ nl_recvmsgs(sock, cb);
+
+ nl_socket_free(sock);
+
+ return 0;
+}
+
+static int originators_callback(struct nl_msg *msg, void *arg)
+{
+ unsigned throughput_mbits, throughput_kbits;
+ struct nlattr *attrs[BATADV_ATTR_MAX+1];
+ struct nlmsghdr *nlh = nlmsg_hdr(msg);
+ int last_seen_msecs, last_seen_secs;
+ struct print_opts *opts = arg;
+ struct bat_host *bat_host;
+ struct genlmsghdr *ghdr;
+ char ifname[IF_NAMESIZE];
+ float last_seen;
+ uint8_t *neigh;
+ uint8_t *orig;
+ char c = ' ';
+ uint8_t tq;
+
+ if (!genlmsg_valid_hdr(nlh, 0)) {
+ fputs("Received invalid data from kernel.", stderr);
+ exit(1);
+ }
+
+ 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), NULL)) {
+ fputs("Received invalid data from kernel.", stderr);
+ exit(1);
+ }
+
+ orig = nla_data(attrs[BATADV_ATTR_ORIG_ADDRESS]);
+ neigh = nla_data(attrs[BATADV_ATTR_NEIGH_ADDRESS]);
+
+ if (!if_indextoname(nla_get_u32(attrs[BATADV_ATTR_HARD_IFINDEX]),
+ ifname))
+ ifname[0] = '\0';
+
+ if (attrs[BATADV_ATTR_FLAG_BEST])
+ c = '*';
+
+ last_seen_msecs = nla_get_u32(attrs[BATADV_ATTR_LAST_SEEN_MSECS]);
+ last_seen = (float)last_seen_msecs / 1000.0;
+ last_seen_secs = last_seen_msecs / 1000;
+ last_seen_msecs = last_seen_msecs % 1000;
+
+ /* skip timed out originators */
+ if (opts->read_opt & NO_OLD_ORIGS)
+ if (last_seen > opts->orig_timeout)
+ return NL_OK;
+
+ if (attrs[BATADV_ATTR_THROUGHPUT]) {
+ throughput_kbits = nla_get_u32(attrs[BATADV_ATTR_THROUGHPUT]);
+ throughput_mbits = throughput_kbits / 1000;
+ throughput_kbits = throughput_kbits % 1000;
+
+ if (!(opts->read_opt & USE_BAT_HOSTS)) {
+ printf(" %c %02x:%02x:%02x:%02x:%02x:%02x %4i.%03is (%9u.%1u) %02x:%02x:%02x:%02x:%02x:%02x [%10s]\n",
+ c,
+ orig[0], orig[1], orig[2],
+ orig[3], orig[4], orig[5],
+ last_seen_secs, last_seen_msecs,
+ throughput_mbits, throughput_kbits / 100,
+ neigh[0], neigh[1], neigh[2],
+ neigh[3], neigh[4], neigh[5],
+ ifname);
+ } else {
+ bat_host = bat_hosts_find_by_mac((char *)orig);
+ if (bat_host)
+ printf(" %c %17s ", c, bat_host->name);
+ else
+ printf(" %c %02x:%02x:%02x:%02x:%02x:%02x ",
+ c,
+ orig[0], orig[1], orig[2],
+ orig[3], orig[4], orig[5]);
+ printf("%4i.%03is (%9u.%1u) ",
+ last_seen_secs, last_seen_msecs,
+ throughput_mbits, throughput_kbits / 100);
+ bat_host = bat_hosts_find_by_mac((char *)neigh);
+ if (bat_host)
+ printf(" %c %17s ", c, bat_host->name);
+ else
+ printf(" %02x:%02x:%02x:%02x:%02x:%02x ",
+ neigh[0], neigh[1], neigh[2],
+ neigh[3], neigh[4], neigh[5]);
+ printf("[%10s]\n", ifname);
+ }
+ }
+ else {
+ tq = nla_get_u8(attrs[BATADV_ATTR_TQ]);
+
+ if (!(opts->read_opt & USE_BAT_HOSTS)) {
+ printf(" %c %02x:%02x:%02x:%02x:%02x:%02x %4i.%03is (%3i) %02x:%02x:%02x:%02x:%02x:%02x [%10s]\n",
+ c,
+ orig[0], orig[1], orig[2],
+ orig[3], orig[4], orig[5],
+ last_seen_secs, last_seen_msecs, tq,
+ neigh[0], neigh[1], neigh[2],
+ neigh[3], neigh[4], neigh[5],
+ ifname);
+ } else {
+ bat_host = bat_hosts_find_by_mac((char *)orig);
+ if (bat_host)
+ printf(" %c %17s ", c, bat_host->name);
+ else
+ printf(" %c %02x:%02x:%02x:%02x:%02x:%02x ",
+ c,
+ orig[0], orig[1], orig[2],
+ orig[3], orig[4], orig[5]);
+ printf("%4i.%03is (%3i) ",
+ last_seen_secs, last_seen_msecs, tq);
+ bat_host = bat_hosts_find_by_mac((char *)neigh);
+ if (bat_host)
+ printf("%17s ", bat_host->name);
+ else
+ printf("%02x:%02x:%02x:%02x:%02x:%02x ",
+ neigh[0], neigh[1], neigh[2],
+ neigh[3], neigh[4], neigh[5]);
+ printf("[%10s]\n", ifname);
+ }
+ }
+
+ return NL_OK;
+}
+
+static int neighbors_callback(struct nl_msg *msg, void *arg)
+{
+ struct nlattr *attrs[BATADV_ATTR_MAX+1];
+ struct nlmsghdr *nlh = nlmsg_hdr(msg);
+ struct print_opts *opts = arg;
+ struct bat_host *bat_host;
+ char ifname[IF_NAMESIZE];
+ struct genlmsghdr *ghdr;
+ uint8_t *neigh;
+
+ if (!genlmsg_valid_hdr(nlh, 0)) {
+ fputs("Received invalid data from kernel.", stderr);
+ exit(1);
+ }
+
+ ghdr = nlmsg_data(nlh);
+
+ if (ghdr->cmd != BATADV_CMD_GET_NEIGHBORS)
+ return NL_OK;
+
+ if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0),
+ genlmsg_len(ghdr), NULL)) {
+ fputs("Received invalid data from kernel.", stderr);
+ exit(1);
+ }
+
+ neigh = nla_data(attrs[BATADV_ATTR_NEIGH_ADDRESS]);
+ bat_host = bat_hosts_find_by_mac((char *)neigh);
+
+ if (!if_indextoname(nla_get_u32(attrs[BATADV_ATTR_HARD_IFINDEX]),
+ ifname))
+ ifname[0] = '\0';
+
+ int last_seen_msecs, last_seen_secs;
+ last_seen_msecs = nla_get_u32(attrs[BATADV_ATTR_LAST_SEEN_MSECS]);
+ last_seen_secs = last_seen_msecs / 1000;
+ last_seen_msecs = last_seen_msecs % 1000;
+
+ if (attrs[BATADV_ATTR_THROUGHPUT]) {
+ unsigned throughput_mbits, throughput_kbits;
+ throughput_kbits = nla_get_u32(attrs[BATADV_ATTR_THROUGHPUT]);
+ throughput_mbits = throughput_kbits / 1000;
+ throughput_kbits = throughput_kbits % 1000;
+
+ if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host)
+ printf("%02x:%02x:%02x:%02x:%02x:%02x ",
+ neigh[0], neigh[1], neigh[2],
+ neigh[3], neigh[4], neigh[5]);
+ else
+ printf("%17s ", bat_host->name);
+
+ printf("%4i.%03is (%9u.%1u) [%10s]\n",
+ last_seen_secs, last_seen_msecs,
+ throughput_mbits, throughput_kbits / 100,
+ ifname);
+ } else {
+ printf(" %10s ", ifname);
+
+ if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host)
+ printf("%02x:%02x:%02x:%02x:%02x:%02x ",
+ neigh[0], neigh[1], neigh[2],
+ neigh[3], neigh[4], neigh[5]);
+ else
+ printf("%17s ", bat_host->name);
+
+ printf("%4i.%03is\n", last_seen_secs, last_seen_msecs);
+ }
+
+ return NL_OK;
+}
+
+static int transglobal_callback(struct nl_msg *msg, void *arg)
+{
+ struct nlattr *attrs[BATADV_ATTR_MAX+1];
+ struct nlmsghdr *nlh = nlmsg_hdr(msg);
+ struct print_opts *opts = arg;
+ struct bat_host *bat_host;
+ struct genlmsghdr *ghdr;
+ uint8_t last_ttvn;
+ uint32_t crc32;
+ uint32_t flags;
+ uint8_t *addr;
+ uint8_t *orig;
+ uint8_t ttvn;
+ int16_t vid;
+
+ if (!genlmsg_valid_hdr(nlh, 0)) {
+ fputs("Received invalid data from kernel.", 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), NULL)) {
+ fputs("Received invalid data from kernel.", stderr);
+ exit(1);
+ }
+
+ addr = nla_data(attrs[BATADV_ATTR_TT_ADDRESS]);
+ orig = nla_data(attrs[BATADV_ATTR_ORIG_ADDRESS]);
+ vid = nla_get_u16(attrs[BATADV_ATTR_TT_VID]);
+ ttvn = nla_get_u8(attrs[BATADV_ATTR_TT_TTVN]);
+ last_ttvn = nla_get_u8(attrs[BATADV_ATTR_TT_LAST_TTVN]);
+ crc32 = nla_get_u32(attrs[BATADV_ATTR_TT_CRC32]);
+ flags = nla_get_u32(attrs[BATADV_ATTR_TT_FLAGS]);
+
+ char c = ' ', r = '.', w = '.', i = '.', t = '.';
+ if (attrs[BATADV_ATTR_FLAG_BEST])
+ c = '*';
+ if (flags & BATADV_TT_CLIENT_ROAM)
+ r = 'R';
+ if (flags & BATADV_TT_CLIENT_WIFI)
+ w = 'W';
+ if (flags & BATADV_TT_CLIENT_ISOLA)
+ i = 'I';
+ if (flags & BATADV_TT_CLIENT_TEMP)
+ t = 'T';
+
+
+ printf(" %c ", c);
+
+ bat_host = bat_hosts_find_by_mac((char *)addr);
+ if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host)
+ printf("%02x:%02x:%02x:%02x:%02x:%02x ",
+ addr[0], addr[1], addr[2],
+ addr[3], addr[4], addr[5]);
+ else
+ printf("%17s ", bat_host->name);
+
+ printf("%4i [%c%c%c%c] (%3u) ",
+ vid, r, w, i, t, ttvn);
+
+ bat_host = bat_hosts_find_by_mac((char *)orig);
+ if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host)
+ printf("%02x:%02x:%02x:%02x:%02x:%02x ",
+ orig[0], orig[1], orig[2],
+ orig[3], orig[4], orig[5]);
+ else
+ printf("%17s ", bat_host->name);
+
+ printf("(%3u) (0x%.8x)\n",
+ last_ttvn, crc32);
+
+ return NL_OK;
+}
+
+static int translocal_callback(struct nl_msg *msg, void *arg)
+{
+ struct nlattr *attrs[BATADV_ATTR_MAX+1];
+ struct nlmsghdr *nlh = nlmsg_hdr(msg);
+ struct print_opts *opts = arg;
+ struct bat_host *bat_host;
+ struct genlmsghdr *ghdr;
+ uint8_t *addr;
+ int16_t vid;
+ uint32_t crc32;
+ uint32_t flags;
+ int last_seen_msecs = 0, last_seen_secs = 0;
+
+ if (!genlmsg_valid_hdr(nlh, 0)) {
+ fputs("Received invalid data from kernel.", stderr);
+ exit(1);
+ }
+
+ 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), NULL)) {
+ fputs("Received invalid data from kernel.", stderr);
+ exit(1);
+ }
+
+ addr = nla_data(attrs[BATADV_ATTR_TT_ADDRESS]);
+ vid = nla_get_u16(attrs[BATADV_ATTR_TT_VID]);
+ crc32 = nla_get_u32(attrs[BATADV_ATTR_TT_CRC32]);
+ flags = nla_get_u32(attrs[BATADV_ATTR_TT_FLAGS]);
+ last_seen_msecs = 0, last_seen_secs = 0;
+
+ char r = '.', p = '.', n = '.', x = '.', w = '.', i = '.';
+ if (flags & BATADV_TT_CLIENT_ROAM)
+ r = 'R';
+ if (flags & BATADV_TT_CLIENT_NEW)
+ n = 'N';
+ if (flags & BATADV_TT_CLIENT_PENDING)
+ x = 'X';
+ if (flags & BATADV_TT_CLIENT_WIFI)
+ w = 'W';
+ if (flags & BATADV_TT_CLIENT_ISOLA)
+ i = 'I';
+
+ if (flags & BATADV_TT_CLIENT_NOPURGE) {
+ p = 'P';
+ } else {
+ last_seen_msecs = nla_get_u32(
+ attrs[BATADV_ATTR_LAST_SEEN_MSECS]);
+ last_seen_secs = last_seen_msecs / 1000;
+ last_seen_msecs = last_seen_msecs % 1000;
+ }
+
+ bat_host = bat_hosts_find_by_mac((char *)addr);
+ if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host)
+ printf("%02x:%02x:%02x:%02x:%02x:%02x ",
+ addr[0], addr[1], addr[2],
+ addr[3], addr[4], addr[5]);
+ else
+ printf("%17s ", bat_host->name);
+
+ printf("%4i [%c%c%c%c%c%c] %3u.%03u (0x%.8x)\n",
+ vid, r, p, n, x, w, i,
+ last_seen_secs, last_seen_msecs,
+ crc32);
+
+ return NL_OK;
+}
+
+static int gateways_callback(struct nl_msg *msg, void *arg)
+{
+ struct nlattr *attrs[BATADV_ATTR_MAX+1];
+ struct nlmsghdr *nlh = nlmsg_hdr(msg);
+ struct print_opts *opts = arg;
+ struct bat_host *bat_host;
+ struct genlmsghdr *ghdr;
+ const char *primary_if;
+ uint32_t bandwidth_down;
+ uint32_t bandwidth_up;
+ uint8_t *router;
+ uint8_t *orig;
+ char c = ' ';
+ uint8_t tq;
+
+ if (!genlmsg_valid_hdr(nlh, 0)) {
+ fputs("Received invalid data from kernel.", stderr);
+ exit(1);
+ }
+
+ 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), NULL)) {
+ fputs("Received invalid data from kernel.", stderr);
+ exit(1);
+ }
+
+ if (attrs[BATADV_ATTR_FLAG_BEST])
+ c = '*';
+
+ orig = nla_data(attrs[BATADV_ATTR_ORIG_ADDRESS]);
+ tq = nla_get_u8(attrs[BATADV_ATTR_TQ]);
+ router = nla_data(attrs[BATADV_ATTR_ROUTER]);
+ primary_if = nla_get_string(attrs[BATADV_ATTR_HARD_IFNAME]);
+ bandwidth_down = nla_get_u32(attrs[BATADV_ATTR_BANDWIDTH_DOWN]);
+ bandwidth_up = nla_get_u32(attrs[BATADV_ATTR_BANDWIDTH_UP]);
+
+ printf("%c ", c);
+
+ bat_host = bat_hosts_find_by_mac((char *)orig);
+ if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host)
+ printf("%02x:%02x:%02x:%02x:%02x:%02x ",
+ orig[0], orig[1], orig[2],
+ orig[3], orig[4], orig[5]);
+ else
+ printf("%17s ", bat_host->name);
+
+ printf("(%3i) ", tq);
+
+ bat_host = bat_hosts_find_by_mac((char *)router);
+ if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host)
+ printf("%02x:%02x:%02x:%02x:%02x:%02x ",
+ router[0], router[1], router[2],
+ router[3], router[4], router[5]);
+ else
+ printf("%17s ", bat_host->name);
+
+ printf("[%10s]: %u.%u/%u.%u MBit\n",
+ primary_if, bandwidth_down / 10, bandwidth_down % 10,
+ bandwidth_up / 10, bandwidth_up % 10);
+
+ return NL_OK;
+}
+
+static int bla_claim_callback(struct nl_msg *msg, void *arg)
+{
+ struct nlattr *attrs[BATADV_ATTR_MAX+1];
+ struct nlmsghdr *nlh = nlmsg_hdr(msg);
+ struct print_opts *opts = arg;
+ struct bat_host *bat_host;
+ struct genlmsghdr *ghdr;
+ uint16_t backbone_crc;
+ uint8_t *backbone;
+ uint8_t *client;
+ uint16_t vid;
+ char c = ' ';
+
+ if (!genlmsg_valid_hdr(nlh, 0)) {
+ fputs("Received invalid data from kernel.", stderr);
+ exit(1);
+ }
+
+ ghdr = nlmsg_data(nlh);
+
+ if (ghdr->cmd != BATADV_CMD_GET_BLA_CLAIM)
+ return NL_OK;
+
+ if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0),
+ genlmsg_len(ghdr), NULL)) {
+ fputs("Received invalid data from kernel.", stderr);
+ exit(1);
+ }
+
+ if (attrs[BATADV_ATTR_BLA_OWN])
+ c = '*';
+
+ client = nla_data(attrs[BATADV_ATTR_BLA_ADDRESS]);
+ vid = nla_get_u16(attrs[BATADV_ATTR_BLA_VID]);
+ backbone = nla_data(attrs[BATADV_ATTR_BLA_BACKBONE]);
+ backbone_crc = nla_get_u16(attrs[BATADV_ATTR_BLA_CRC]);
+
+ bat_host = bat_hosts_find_by_mac((char *)client);
+ if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host)
+ printf("%02x:%02x:%02x:%02x:%02x:%02x ",
+ client[0], client[1], client[2],
+ client[3], client[4], client[5]);
+ else
+ printf("%17s ", bat_host->name);
+
+ printf("%5d ", vid);
+
+ bat_host = bat_hosts_find_by_mac((char *)backbone);
+ if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host)
+ printf("%02x:%02x:%02x:%02x:%02x:%02x ",
+ backbone[0], backbone[1], backbone[2],
+ backbone[3], backbone[4], backbone[5]);
+ else
+ printf("%17s ", bat_host->name);
+
+ printf("%c %#.4x", c, backbone_crc);
+
+ return NL_OK;
+}
+
+static int netlink_print_common(char *mesh_iface, int read_opt,
+ float orig_timeout, float watch_interval,
+ const char *header, uint8_t nl_cmd,
+ nl_recvmsg_msg_cb_t callback)
+{
+ struct print_opts opts = {
+ .read_opt = read_opt,
+ .orig_timeout = orig_timeout,
+ .watch_interval = watch_interval
+ };
+ struct nl_sock *sock;
+ struct nl_msg *msg;
+ struct nl_cb *cb;
+ int ifindex;
+ int family;
+
+ sock = nl_socket_alloc();
+ genl_connect(sock);
+
+ family = genl_ctrl_resolve(sock, BATADV_NL_NAME);
+ if (family < 0) {
+ return EOPNOTSUPP;
+ }
+
+ ifindex = if_nametoindex(mesh_iface);
+ if (!ifindex) {
+ fprintf(stderr, "Interface %s is unknown\n", mesh_iface);
+ return ENODEV;
+ }
+
+ bat_hosts_init(read_opt);
+
+ cb = nl_cb_alloc(NL_CB_DEFAULT);
+ nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, callback, &opts);
+ nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, stop_callback, NULL);
+ nl_cb_err(cb, NL_CB_CUSTOM, print_error, NULL);
+
+ do {
+ if (read_opt & CLR_CONT_READ)
+ /* clear screen, set cursor back to 0,0 */
+ printf("\033[2J\033[0;0f");
+
+ if (!(read_opt & SKIP_HEADER)) {
+ netlink_print_info(ifindex);
+ if (header)
+ printf(header);
+ }
+
+ msg = nlmsg_alloc();
+ genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, family, 0,
+ NLM_F_DUMP, nl_cmd, 1);
+
+ nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX, ifindex);
+ nl_send_auto_complete(sock, msg);
+
+ nlmsg_free(msg);
+
+ last_err = 0;
+ nl_recvmsgs(sock, cb);
+ if (!last_err && read_opt & (CONT_READ|CLR_CONT_READ))
+ usleep(1000000 * watch_interval);
+
+ } while (!last_err && read_opt & (CONT_READ|CLR_CONT_READ));
+
+ bat_hosts_free();
+
+ nl_socket_free(sock);
+
+ return last_err;
+}
+
+
+int netlink_print_originators(char *mesh_iface, int read_opts,
+ float orig_timeout,
+ float watch_interval)
+{
+ return netlink_print_common(mesh_iface, read_opts, orig_timeout,
+ watch_interval, "",
+ BATADV_CMD_GET_ORIGINATORS,
+ originators_callback);
+}
+
+int netlink_print_neighbors(char *mesh_iface, int read_opts,
+ float orig_timeout,
+ float watch_interval)
+{
+ return netlink_print_common(mesh_iface, read_opts, orig_timeout,
+ watch_interval,
+ " IF Neighbor last-seen\n""",
+ BATADV_CMD_GET_NEIGHBORS,
+ neighbors_callback);
+}
+
+int netlink_print_transglobal(char *mesh_iface, int read_opts,
+ float orig_timeout,
+ float watch_interval)
+{
+ return netlink_print_common(mesh_iface, read_opts, orig_timeout,
+ watch_interval,
+ " Client VID Flags Last ttvn Via ttvn (CRC )\n",
+ BATADV_CMD_GET_TRANSTABLE_GLOBAL,
+ transglobal_callback);
+}
+
+int netlink_print_translocal(char *mesh_iface, int read_opts,
+ float orig_timeout,
+ float watch_interval)
+{
+ return netlink_print_common(mesh_iface, read_opts, orig_timeout,
+ watch_interval,
+ " Client VID Flags Last seen (CRC )\n",
+ BATADV_CMD_GET_TRANSTABLE_LOCAL,
+ translocal_callback);
+}
+
+int netlink_print_gateways(char *mesh_iface, int read_opts,
+ float orig_timeout,
+ float watch_interval)
+{
+ return netlink_print_common(mesh_iface, read_opts, orig_timeout,
+ watch_interval,
+ " Router TQ Next Hop outgoingIf Bandwidth\n",
+ BATADV_CMD_GET_GATEWAYS,
+ gateways_callback);
+}
+
+int netlink_print_bla_claim(char *mesh_iface, int read_opts,
+ float orig_timeout,
+ float watch_interval)
+{
+ return netlink_print_common(mesh_iface, read_opts, orig_timeout,
+ watch_interval,
+ "Client VID Originator [o] (CRC )\n",
+ BATADV_CMD_GET_BLA_CLAIM,
+ bla_claim_callback);
+}
+
+
--
2.8.0.rc3
^ permalink raw reply related [flat|nested] 7+ messages in thread