static void print_linktype(FILE *fp, struct rtattr *tb)
{
struct rtattr *linkinfo[IFLA_INFO_MAX+1];
struct link_util *lu;
char *kind;
parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb);
if (!linkinfo[IFLA_INFO_KIND])
return;
kind = RTA_DATA(linkinfo[IFLA_INFO_KIND]);
fprintf(fp, "%s", _SL_);
fprintf(fp, " %s ", kind);
lu = get_link_kind(kind);
if (!lu || !lu->print_opt)
return;
if (1) {
struct rtattr *attr[lu->maxattr+1], **data = NULL;
if (linkinfo[IFLA_INFO_DATA]) {
parse_rtattr_nested(attr, lu->maxattr,
linkinfo[IFLA_INFO_DATA]);
data = attr;
}
lu->print_opt(lu, fp, data);
if (linkinfo[IFLA_INFO_XSTATS] && show_stats &&
lu->print_xstats)
lu->print_xstats(lu, fp, linkinfo[IFLA_INFO_XSTATS]);
}
}
int iplink_ifla_xstats(int argc, char **argv)
{
struct link_util *lu = NULL;
__u32 filt_mask;
if (!argc) {
fprintf(stderr, "xstats: missing argument\n");
return -1;
}
if (matches(*argv, "type") == 0) {
NEXT_ARG();
lu = get_link_kind(*argv);
if (!lu)
invarg("invalid type", *argv);
} else if (matches(*argv, "help") == 0) {
print_explain(stdout);
return 0;
} else {
invarg("unknown argument", *argv);
}
if (!lu) {
print_explain(stderr);
return -1;
}
if (!lu->print_ifla_xstats) {
fprintf(stderr, "xstats: link type %s doesn't support xstats\n",
lu->id);
return -1;
}
if (lu->parse_ifla_xstats &&
lu->parse_ifla_xstats(lu, argc-1, argv+1))
return -1;
if (strstr(lu->id, "_slave"))
filt_mask = IFLA_STATS_FILTER_BIT(IFLA_STATS_LINK_XSTATS_SLAVE);
else
filt_mask = IFLA_STATS_FILTER_BIT(IFLA_STATS_LINK_XSTATS);
if (rtnl_wilddump_stats_req_filter(&rth, AF_UNSPEC,
RTM_GETSTATS,
filt_mask) < 0) {
perror("Cannont send dump request");
return -1;
}
if (rtnl_dump_filter(&rth, lu->print_ifla_xstats, stdout) < 0) {
fprintf(stderr, "Dump terminated\n");
return -1;
}
return 0;
}
static void print_linktype(FILE *fp, struct rtattr *tb)
{
struct rtattr *linkinfo[IFLA_INFO_MAX+1];
struct link_util *lu;
struct link_util *slave_lu;
char *kind;
char *slave_kind;
parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb);
if (linkinfo[IFLA_INFO_KIND]) {
kind = RTA_DATA(linkinfo[IFLA_INFO_KIND]);
fprintf(fp, "%s", _SL_);
fprintf(fp, " %s ", kind);
lu = get_link_kind(kind);
if (lu && lu->print_opt) {
struct rtattr *attr[lu->maxattr+1], **data = NULL;
if (linkinfo[IFLA_INFO_DATA]) {
parse_rtattr_nested(attr, lu->maxattr,
linkinfo[IFLA_INFO_DATA]);
data = attr;
}
lu->print_opt(lu, fp, data);
if (linkinfo[IFLA_INFO_XSTATS] && show_stats &&
lu->print_xstats)
lu->print_xstats(lu, fp, linkinfo[IFLA_INFO_XSTATS]);
}
}
if (linkinfo[IFLA_INFO_SLAVE_KIND]) {
slave_kind = RTA_DATA(linkinfo[IFLA_INFO_SLAVE_KIND]);
fprintf(fp, "%s", _SL_);
fprintf(fp, " %s_slave ", slave_kind);
slave_lu = get_link_slave_kind(slave_kind);
if (slave_lu && slave_lu->print_opt) {
struct rtattr *attr[slave_lu->maxattr+1], **data = NULL;
if (linkinfo[IFLA_INFO_SLAVE_DATA]) {
parse_rtattr_nested(attr, slave_lu->maxattr,
linkinfo[IFLA_INFO_SLAVE_DATA]);
data = attr;
}
slave_lu->print_opt(slave_lu, fp, data);
}
}
}
static int iplink_modify(int cmd, unsigned int flags, int argc, char **argv)
{
int len;
char *dev = NULL;
char *name = NULL;
char *link = NULL;
char *type = NULL;
int index = 0;
int group;
struct link_util *lu = NULL;
struct iplink_req req;
int ret;
memset(&req, 0, sizeof(req));
req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
req.n.nlmsg_flags = NLM_F_REQUEST|flags;
req.n.nlmsg_type = cmd;
req.i.ifi_family = preferred_family;
ret = iplink_parse(argc, argv, &req, &name, &type, &link, &dev, &group, &index);
if (ret < 0)
return ret;
argc -= ret;
argv += ret;
if (group != -1) {
if (dev)
addattr_l(&req.n, sizeof(req), IFLA_GROUP,
&group, sizeof(group));
else {
if (argc) {
fprintf(stderr, "Garbage instead of arguments "
"\"%s ...\". Try \"ip link "
"help\".\n", *argv);
return -1;
}
if (flags & NLM_F_CREATE) {
fprintf(stderr, "group cannot be used when "
"creating devices.\n");
return -1;
}
req.i.ifi_index = 0;
addattr32(&req.n, sizeof(req), IFLA_GROUP, group);
if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0)
exit(2);
return 0;
}
}
if (!(flags & NLM_F_CREATE)) {
if (!dev) {
fprintf(stderr, "Not enough information: \"dev\" "
"argument is required.\n");
exit(-1);
}
req.i.ifi_index = ll_name_to_index(dev);
if (req.i.ifi_index == 0) {
fprintf(stderr, "Cannot find device \"%s\"\n", dev);
return -1;
}
} else {
/* Allow "ip link add dev" and "ip link add name" */
if (!name)
name = dev;
if (link) {
int ifindex;
ifindex = ll_name_to_index(link);
if (ifindex == 0) {
fprintf(stderr, "Cannot find device \"%s\"\n",
link);
return -1;
}
addattr_l(&req.n, sizeof(req), IFLA_LINK, &ifindex, 4);
}
req.i.ifi_index = index;
}
if (name) {
len = strlen(name) + 1;
if (len == 1)
invarg("\"\" is not a valid device identifier\n", "name");
if (len > IFNAMSIZ)
invarg("\"name\" too long\n", name);
addattr_l(&req.n, sizeof(req), IFLA_IFNAME, name, len);
}
if (type) {
struct rtattr *linkinfo = NLMSG_TAIL(&req.n);
addattr_l(&req.n, sizeof(req), IFLA_LINKINFO, NULL, 0);
addattr_l(&req.n, sizeof(req), IFLA_INFO_KIND, type,
strlen(type));
lu = get_link_kind(type);
if (lu && argc) {
struct rtattr * data = NLMSG_TAIL(&req.n);
addattr_l(&req.n, sizeof(req), IFLA_INFO_DATA, NULL, 0);
if (lu->parse_opt &&
lu->parse_opt(lu, argc, argv, &req.n))
return -1;
data->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)data;
} else if (argc) {
if (matches(*argv, "help") == 0)
usage();
fprintf(stderr, "Garbage instead of arguments \"%s ...\". "
"Try \"ip link help\".\n", *argv);
return -1;
}
linkinfo->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)linkinfo;
} else if (flags & NLM_F_CREATE) {
fprintf(stderr, "Not enough information: \"type\" argument "
"is required\n");
return -1;
}
if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0)
exit(2);
return 0;
}
