From 5027f233e35b80f306bc06b63f2ad1243ba5f3a8 Mon Sep 17 00:00:00 2001 From: Hoang Le Date: Fri, 22 Mar 2019 15:47:34 +0700 Subject: [PATCH] tipc: add link broadcast get The command prints the actually method that multicast is running in the system. Also 'ratio' value for AUTOSELECT method. A sample usage is shown below: $tipc link get broadcast BROADCAST $tipc link get broadcast AUTOSELECT ratio:30% $tipc link get broadcast -j -p [ { "method": "AUTOSELECT" },{ "ratio": 30 } ] Acked-by: Jon Maloy Signed-off-by: Hoang Le Signed-off-by: David Ahern --- tipc/link.c | 85 ++++++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 84 insertions(+), 1 deletion(-) diff --git a/tipc/link.c b/tipc/link.c index e3b10bb7..e123c186 100644 --- a/tipc/link.c +++ b/tipc/link.c @@ -175,10 +175,92 @@ static void cmd_link_get_help(struct cmdl *cmdl) "PROPERTIES\n" " tolerance - Get link tolerance\n" " priority - Get link priority\n" - " window - Get link window\n", + " window - Get link window\n" + " broadcast - Get link broadcast\n", cmdl->argv[0]); } +static int cmd_link_get_bcast_cb(const struct nlmsghdr *nlh, void *data) +{ + int *prop = data; + int prop_ratio = TIPC_NLA_PROP_BROADCAST_RATIO; + struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh); + struct nlattr *info[TIPC_NLA_MAX + 1] = {}; + struct nlattr *attrs[TIPC_NLA_LINK_MAX + 1] = {}; + struct nlattr *props[TIPC_NLA_PROP_MAX + 1] = {}; + int bc_mode; + + mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info); + if (!info[TIPC_NLA_LINK]) + return MNL_CB_ERROR; + + mnl_attr_parse_nested(info[TIPC_NLA_LINK], parse_attrs, attrs); + if (!attrs[TIPC_NLA_LINK_PROP]) + return MNL_CB_ERROR; + + mnl_attr_parse_nested(attrs[TIPC_NLA_LINK_PROP], parse_attrs, props); + if (!props[*prop]) + return MNL_CB_ERROR; + + bc_mode = mnl_attr_get_u32(props[*prop]); + + new_json_obj(json); + open_json_object(NULL); + switch (bc_mode) { + case 0x1: + print_string(PRINT_ANY, "method", "%s\n", "BROADCAST"); + break; + case 0x2: + print_string(PRINT_ANY, "method", "%s\n", "REPLICAST"); + break; + case 0x4: + print_string(PRINT_ANY, "method", "%s", "AUTOSELECT"); + close_json_object(); + open_json_object(NULL); + print_uint(PRINT_ANY, "ratio", " ratio:%u%\n", + mnl_attr_get_u32(props[prop_ratio])); + break; + default: + print_string(PRINT_ANY, NULL, "UNKNOWN\n", NULL); + break; + } + close_json_object(); + delete_json_obj(); + return MNL_CB_OK; +} + +static void cmd_link_get_bcast_help(struct cmdl *cmdl) +{ + fprintf(stderr, "Usage: %s link get PPROPERTY\n\n" + "PROPERTIES\n" + " broadcast - Get link broadcast\n", + cmdl->argv[0]); +} + +static int cmd_link_get_bcast(struct nlmsghdr *nlh, const struct cmd *cmd, + struct cmdl *cmdl, void *data) +{ + int prop = TIPC_NLA_PROP_BROADCAST; + char buf[MNL_SOCKET_BUFFER_SIZE]; + struct nlattr *attrs; + + if (help_flag) { + (cmd->help)(cmdl); + return -EINVAL; + } + + nlh = msg_init(buf, TIPC_NL_LINK_GET); + if (!nlh) { + fprintf(stderr, "error, message initialisation failed\n"); + return -1; + } + attrs = mnl_attr_nest_start(nlh, TIPC_NLA_LINK); + /* Direct to broadcast-link setting */ + mnl_attr_put_strz(nlh, TIPC_NLA_LINK_NAME, tipc_bclink_name); + mnl_attr_nest_end(nlh, attrs); + return msg_doit(nlh, cmd_link_get_bcast_cb, &prop); +} + static int cmd_link_get(struct nlmsghdr *nlh, const struct cmd *cmd, struct cmdl *cmdl, void *data) { @@ -186,6 +268,7 @@ static int cmd_link_get(struct nlmsghdr *nlh, const struct cmd *cmd, { PRIORITY_STR, cmd_link_get_prop, cmd_link_get_help }, { TOLERANCE_STR, cmd_link_get_prop, cmd_link_get_help }, { WINDOW_STR, cmd_link_get_prop, cmd_link_get_help }, + { BROADCAST_STR, cmd_link_get_bcast, cmd_link_get_bcast_help }, { NULL } }; -- 2.39.5