void control_plane_start(struct control_plane *cp, struct addrinfo **ai)
{
if (cp->opts->client) {
cp->ctrl_conn = ctrl_connect(cp->opts->host,
cp->opts->control_port, ai,
cp->opts, cp->cb);
LOG_INFO(cp->cb, "connected to control port");
} else {
cp->ctrl_port = ctrl_listen(NULL, cp->opts->control_port, ai,
cp->opts, cp->cb);
LOG_INFO(cp->cb, "opened control port");
}
}
static int parse_ctrl(struct genl_util *a, int argc, char **argv)
{
argv++;
if (--argc <= 0) {
fprintf(stderr, "wrong controller params\n");
return -1;
}
if (matches(*argv, "monitor") == 0)
return ctrl_listen(argc-1, argv+1);
if (matches(*argv, "get") == 0)
return ctrl_list(CTRL_CMD_GETFAMILY, argc-1, argv+1);
if (matches(*argv, "list") == 0 ||
matches(*argv, "show") == 0 ||
matches(*argv, "lst") == 0)
return ctrl_list(CTRL_CMD_UNSPEC, argc-1, argv+1);
if (matches(*argv, "help") == 0)
return usage();
fprintf(stderr, "ctrl command \"%s\" is unknown, try \"ctrl help\".\n",
*argv);
return -1;
}
static int ctrl_list(int cmd, int argc, char **argv)
{
struct rtnl_handle rth;
int ret = -1;
char d[GENL_NAMSIZ];
struct {
struct nlmsghdr n;
struct genlmsghdr g;
char buf[4096];
} req = {
.n.nlmsg_len = NLMSG_LENGTH(GENL_HDRLEN),
.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK,
.n.nlmsg_type = GENL_ID_CTRL,
.g.cmd = CTRL_CMD_GETFAMILY,
};
struct nlmsghdr *nlh = &req.n;
if (rtnl_open_byproto(&rth, 0, NETLINK_GENERIC) < 0) {
fprintf(stderr, "Cannot open generic netlink socket\n");
exit(1);
}
if (cmd == CTRL_CMD_GETFAMILY) {
if (argc != 2) {
fprintf(stderr, "Wrong number of params\n");
return -1;
}
if (matches(*argv, "name") == 0) {
NEXT_ARG();
strncpy(d, *argv, sizeof (d) - 1);
addattr_l(nlh, 128, CTRL_ATTR_FAMILY_NAME,
d, strlen(d) + 1);
} else if (matches(*argv, "id") == 0) {
__u16 id;
NEXT_ARG();
if (get_u16(&id, *argv, 0)) {
fprintf(stderr, "Illegal \"id\"\n");
goto ctrl_done;
}
addattr_l(nlh, 128, CTRL_ATTR_FAMILY_ID, &id, 2);
} else {
fprintf(stderr, "Wrong params\n");
goto ctrl_done;
}
if (rtnl_talk(&rth, nlh, nlh, sizeof(req)) < 0) {
fprintf(stderr, "Error talking to the kernel\n");
goto ctrl_done;
}
if (print_ctrl2(NULL, nlh, (void *) stdout) < 0) {
fprintf(stderr, "Dump terminated\n");
goto ctrl_done;
}
}
if (cmd == CTRL_CMD_UNSPEC) {
nlh->nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
nlh->nlmsg_seq = rth.dump = ++rth.seq;
if (rtnl_send(&rth, nlh, nlh->nlmsg_len) < 0) {
perror("Failed to send dump request\n");
goto ctrl_done;
}
rtnl_dump_filter(&rth, print_ctrl2, stdout);
}
ret = 0;
ctrl_done:
rtnl_close(&rth);
return ret;
}
static int ctrl_listen(int argc, char **argv)
{
struct rtnl_handle rth;
if (rtnl_open_byproto(&rth, nl_mgrp(GENL_ID_CTRL), NETLINK_GENERIC) < 0) {
fprintf(stderr, "Canot open generic netlink socket\n");
return -1;
}
if (rtnl_listen(&rth, print_ctrl, (void *) stdout) < 0)
return -1;
return 0;
}
static int parse_ctrl(struct genl_util *a, int argc, char **argv)
{
argv++;
if (--argc <= 0) {
fprintf(stderr, "wrong controller params\n");
return -1;
}
if (matches(*argv, "monitor") == 0)
return ctrl_listen(argc-1, argv+1);
if (matches(*argv, "get") == 0)
return ctrl_list(CTRL_CMD_GETFAMILY, argc-1, argv+1);
if (matches(*argv, "list") == 0 ||
matches(*argv, "show") == 0 ||
matches(*argv, "lst") == 0)
return ctrl_list(CTRL_CMD_UNSPEC, argc-1, argv+1);
if (matches(*argv, "help") == 0)
return usage();
fprintf(stderr, "ctrl command \"%s\" is unknown, try \"ctrl help\".\n",
*argv);
return -1;
}
