提交 c68b8b68 编写于 作者: P Patrick McHardy 提交者: David S. Miller

[NETFILTER]: Fix routing of REJECT target generated packets in output chain

Packets generated by the REJECT target in the output chain have a local
destination address and a foreign source address. Make sure not to use
the foreign source address for the output route lookup.
Signed-off-by: NPatrick McHardy <kaber@trash.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 e5b5ef7d
......@@ -15,16 +15,19 @@ int ip_route_me_harder(struct sk_buff **pskb, unsigned addr_type)
struct flowi fl = {};
struct dst_entry *odst;
unsigned int hh_len;
unsigned int type;
type = inet_addr_type(iph->saddr);
if (addr_type == RTN_UNSPEC)
addr_type = inet_addr_type(iph->saddr);
addr_type = type;
/* some non-standard hacks like ipt_REJECT.c:send_reset() can cause
* packets with foreign saddr to appear on the NF_IP_LOCAL_OUT hook.
*/
if (addr_type == RTN_LOCAL) {
fl.nl_u.ip4_u.daddr = iph->daddr;
fl.nl_u.ip4_u.saddr = iph->saddr;
if (type == RTN_LOCAL)
fl.nl_u.ip4_u.saddr = iph->saddr;
fl.nl_u.ip4_u.tos = RT_TOS(iph->tos);
fl.oif = (*pskb)->sk ? (*pskb)->sk->sk_bound_dev_if : 0;
fl.mark = (*pskb)->mark;
......
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