assert(prefix_opt);
if (len < prefix_opt->nd_opt_pi_len)
- return -ENOMSG;
+ return -EBADMSG;
if (!(prefix_opt->nd_opt_pi_flags_reserved & (ND_OPT_PI_FLAG_ONLINK | ND_OPT_PI_FLAG_AUTO)))
return 0;
return 0;
}
-static int ndisc_ra_parse(sd_ndisc *nd, struct nd_router_advert *ra, ssize_t len) {
+static int ndisc_ra_parse(sd_ndisc *nd, struct nd_router_advert *ra, size_t len) {
void *opt;
struct nd_opt_hdr *opt_hdr;
assert(nd);
assert(ra);
- len -= sizeof(*ra);
- if (len < NDISC_OPT_LEN_UNITS) {
+ if (len < sizeof(struct nd_router_advert) + NDISC_OPT_LEN_UNITS) {
log_ndisc(nd, "Router Advertisement below minimum length");
-
- return -ENOMSG;
+ return -EBADMSG;
}
+ len -= sizeof(struct nd_router_advert);
opt = ra + 1;
opt_hdr = opt;
struct nd_opt_prefix_info *opt_prefix;
if (opt_hdr->nd_opt_len == 0)
- return -ENOMSG;
+ return -EBADMSG;
switch (opt_hdr->nd_opt_type) {
case ND_OPT_MTU:
pref == ND_RA_FLAG_PREF_HIGH ? "high" : pref == ND_RA_FLAG_PREF_LOW ? "low" : "medium",
lifetime);
- r = ndisc_ra_parse(nd, ra, len);
+ r = ndisc_ra_parse(nd, ra, (size_t) len);
if (r < 0) {
log_ndisc_errno(nd, r, "Could not parse Router Advertisement: %m");
return 0;