diff options
Diffstat (limited to 'ggsn/ggsn.c')
| -rw-r--r-- | ggsn/ggsn.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/ggsn/ggsn.c b/ggsn/ggsn.c index de8090b..c7f6376 100644 --- a/ggsn/ggsn.c +++ b/ggsn/ggsn.c @@ -726,13 +726,15 @@ static int cb_tun_ind(struct tun_t *tun, void *pack, unsigned len) struct ip6_hdr *ip6h = (struct ip6_hdr *)pack; struct ippool_t *pool; - if (iph->version == 4) { + switch (iph->version) { + case 4: if (len < sizeof(*iph) || len < 4*iph->ihl) return -1; dst.len = 4; dst.v4.s_addr = iph->daddr; pool = apn->v4.pool; - } else if (iph->version == 6) { + break; + case 6: /* Due to the fact that 3GPP requires an allocation of a * /64 prefix to each MS, we must instruct * ippool_getip() below to match only the leading /64 @@ -740,7 +742,8 @@ static int cb_tun_ind(struct tun_t *tun, void *pack, unsigned len) dst.len = 8; dst.v6 = ip6h->ip6_dst; pool = apn->v6.pool; - } else { + break; + default: LOGP(DTUN, LOGL_NOTICE, "non-IPv%u packet received from tun\n", iph->version); return -1; } |