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genl: remove dead code

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The function genl_ctrl_resolve_family is defined but never used
in current code.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
This commit is contained in:
Stephen Hemminger 2018-11-15 14:36:24 -08:00
parent 1d2fac4145
commit 13530c46b5
2 changed files with 0 additions and 73 deletions
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71
genl/ctrl.c
View File

@ -38,77 +38,6 @@ static int usage(void)
return -1;
}
int genl_ctrl_resolve_family(const char *family)
{
struct rtnl_handle rth;
int ret = 0;
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;
struct genlmsghdr *ghdr = &req.g;
struct nlmsghdr *answer = NULL;
if (rtnl_open_byproto(&rth, 0, NETLINK_GENERIC) < 0) {
fprintf(stderr, "Cannot open generic netlink socket\n");
exit(1);
}
addattr_l(nlh, 128, CTRL_ATTR_FAMILY_NAME, family, strlen(family) + 1);
if (rtnl_talk(&rth, nlh, &answer) < 0) {
fprintf(stderr, "Error talking to the kernel\n");
goto errout;
}
{
struct rtattr *tb[CTRL_ATTR_MAX + 1];
int len = answer->nlmsg_len;
struct rtattr *attrs;
if (answer->nlmsg_type != GENL_ID_CTRL) {
fprintf(stderr, "Not a controller message, nlmsg_len=%d "
"nlmsg_type=0x%x\n", answer->nlmsg_len, answer->nlmsg_type);
goto errout;
}
if (ghdr->cmd != CTRL_CMD_NEWFAMILY) {
fprintf(stderr, "Unknown controller command %d\n", ghdr->cmd);
goto errout;
}
len -= NLMSG_LENGTH(GENL_HDRLEN);
if (len < 0) {
fprintf(stderr, "wrong controller message len %d\n", len);
free(answer);
return -1;
}
attrs = (struct rtattr *) ((char *) answer + NLMSG_LENGTH(GENL_HDRLEN));
parse_rtattr(tb, CTRL_ATTR_MAX, attrs, len);
if (tb[CTRL_ATTR_FAMILY_ID] == NULL) {
fprintf(stderr, "Missing family id TLV\n");
goto errout;
}
ret = rta_getattr_u16(tb[CTRL_ATTR_FAMILY_ID]);
}
errout:
free(answer);
rtnl_close(&rth);
return ret;
}
static void print_ctrl_cmd_flags(FILE *fp, __u32 fl)
{
fprintf(fp, "\n\t\tCapabilities (0x%x):\n ", fl);

2
genl/genl_utils.h
View File

@ -13,6 +13,4 @@ struct genl_util
int (*print_genlopt)(struct nlmsghdr *n, void *arg);
};
int genl_ctrl_resolve_family(const char *family);
#endif