diff options
Diffstat (limited to 'icmp.c')
| -rw-r--r-- | icmp.c | 16 |
1 files changed, 10 insertions, 6 deletions
@@ -169,24 +169,28 @@ static struct icmp_ping_flow *icmp_ping_new(const struct ctx *c, sa_family_t af, uint16_t id, const void *saddr, const void *daddr) { + uint8_t proto = af == AF_INET ? IPPROTO_ICMP : IPPROTO_ICMPV6; uint8_t flowtype = af == AF_INET ? FLOW_PING4 : FLOW_PING6; union epoll_ref ref = { .type = EPOLL_TYPE_PING }; union flow *flow = flow_alloc(); struct icmp_ping_flow *pingf; const struct flowside *tgt; - const void *bind_addr; if (!flow) return NULL; flow_initiate_af(flow, PIF_TAP, af, saddr, id, daddr, id); + if (!(tgt = flow_target(c, flow, proto))) + goto cancel; - if (af == AF_INET) - bind_addr = &c->ip4.addr_out; - else if (af == AF_INET6) - bind_addr = &c->ip6.addr_out; + if (flow->f.pif[TGTSIDE] != PIF_HOST) { + flow_err(flow, "No support for forwarding %s from %s to %s", + proto == IPPROTO_ICMP ? "ICMP" : "ICMPv6", + pif_name(flow->f.pif[INISIDE]), + pif_name(flow->f.pif[TGTSIDE])); + goto cancel; + } - tgt = flow_target_af(flow, PIF_HOST, af, bind_addr, 0, daddr, 0); pingf = FLOW_SET_TYPE(flow, flowtype, ping); pingf->seq = -1; |