Repository : ssh://git@open-mesh.org/batctl
On branch : master
commit 39c144142e364986d3a2f1ce3ba61a2a138122c0 Author: Simon Wunderlich sw@simonwunderlich.de Date: Mon Jul 18 12:12:02 2016 +0200
batctl: add netlink dump function for backbone tables
Signed-off-by: Simon Wunderlich sw@simonwunderlich.de Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Marek Lindner mareklindner@neomailbox.ch
39c144142e364986d3a2f1ce3ba61a2a138122c0 debug.c | 1 + netlink.c | 79 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ netlink.h | 2 ++ 3 files changed, 82 insertions(+)
diff --git a/debug.c b/debug.c index 46f03da..ddabbfb 100644 --- a/debug.c +++ b/debug.c @@ -79,6 +79,7 @@ const struct debug_table_data batctl_debug_tables[BATCTL_TABLE_NUM] = { .opt_short = "bbt", .debugfs_name = "bla_backbone_table", .header_lines = 2, + .netlink_fn = netlink_print_bla_backbone, }, { .opt_long = "dat_cache", diff --git a/netlink.c b/netlink.c index b87964a..1e406a9 100644 --- a/netlink.c +++ b/netlink.c @@ -226,6 +226,7 @@ static int info_callback(struct nl_msg *msg, void *arg) if (ret < 0) extra_info = NULL; break; + case BATADV_CMD_GET_BLA_BACKBONE: case BATADV_CMD_GET_BLA_CLAIM: ret = asprintf(&extra_info, ", group id: 0x%04x", bla_group_id); @@ -947,6 +948,74 @@ static int bla_claim_callback(struct nl_msg *msg, void *arg) return NL_OK; }
+static const int bla_backbone_mandatory[] = { + BATADV_ATTR_BLA_VID, + BATADV_ATTR_BLA_BACKBONE, + BATADV_ATTR_BLA_CRC, + BATADV_ATTR_LAST_SEEN_MSECS, +}; + +static int bla_backbone_callback(struct nl_msg *msg, void *arg) +{ + 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; + uint16_t backbone_crc; + uint8_t *backbone; + uint16_t vid; + + 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_BLA_BACKBONE) + 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); + } + + if (missing_mandatory_attrs(attrs, bla_backbone_mandatory, + ARRAY_SIZE(bla_backbone_mandatory))) { + fputs("Missing attributes from kernel\n", stderr); + exit(1); + } + + /* don't show own backbones */ + if (attrs[BATADV_ATTR_BLA_OWN]) + return NL_OK; + + 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]); + + 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 *)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("on %5d %4i.%03is (0x%04x)\n", + BATADV_PRINT_VID(vid), last_seen_secs, last_seen_msecs, + backbone_crc); + + return NL_OK; +} + static int netlink_print_common(char *mesh_iface, char *orig_iface, int read_opt, float orig_timeout, float watch_interval, const char *header, @@ -1117,3 +1186,13 @@ int netlink_print_bla_claim(char *mesh_iface, char *orig_iface, int read_opts, BATADV_CMD_GET_BLA_CLAIM, bla_claim_callback); } + +int netlink_print_bla_backbone(char *mesh_iface, char *orig_iface, int read_opts, + float orig_timeout, float watch_interval) +{ + return netlink_print_common(mesh_iface, orig_iface, read_opts, + orig_timeout, watch_interval, + "Originator VID last seen (CRC )\n", + BATADV_CMD_GET_BLA_BACKBONE, + bla_backbone_callback); +} diff --git a/netlink.h b/netlink.h index 69f0958..5ff7ace 100644 --- a/netlink.h +++ b/netlink.h @@ -40,6 +40,8 @@ int netlink_print_gateways(char *mesh_iface, char *orig_iface, int read_opt, float orig_timeout, float watch_interval); int netlink_print_bla_claim(char *mesh_iface, char *orig_iface, int read_opt, float orig_timeout, float watch_interval); +int netlink_print_bla_backbone(char *mesh_iface, char *orig_iface, int read_opt, + float orig_timeout, float watch_interval);
extern struct nla_policy batadv_netlink_policy[];