From a13a4126c8b94355bbe43e47275b97ce5bef003c Mon Sep 17 00:00:00 2001 From: Jan Kiszka Date: Wed, 24 Jun 2009 14:42:28 +0200 Subject: slirp: Rework internal configuration The user mode IP stack is currently only minimally configurable /wrt to its virtual IP addresses. This is unfortunate if some guest has a fixed idea of which IP addresses to use. Therefore this patch prepares the stack for fully configurable IP addresses and masks. The user interface and default addresses remain untouched in this step, they will be enhanced in the following patch. Signed-off-by: Jan Kiszka Signed-off-by: Anthony Liguori --- slirp/ip_input.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'slirp/ip_input.c') diff --git a/slirp/ip_input.c b/slirp/ip_input.c index c37412e8cf..7a3c88b549 100644 --- a/slirp/ip_input.c +++ b/slirp/ip_input.c @@ -134,18 +134,19 @@ ip_input(struct mbuf *m) } if (slirp_restrict) { - if (memcmp(&ip->ip_dst.s_addr, &special_addr, 3)) { + if ((ip->ip_dst.s_addr & vnetwork_mask.s_addr) == + vnetwork_addr.s_addr) { if (ip->ip_dst.s_addr == 0xffffffff && ip->ip_p != IPPROTO_UDP) goto bad; } else { - int host = ntohl(ip->ip_dst.s_addr) & 0xff; struct ex_list *ex_ptr; - if (host == 0xff) + if ((ip->ip_dst.s_addr & ~vnetwork_mask.s_addr) == + ~vnetwork_mask.s_addr) goto bad; for (ex_ptr = exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) - if (ex_ptr->ex_addr == host) + if (ex_ptr->ex_addr.s_addr == ip->ip_dst.s_addr) break; if (!ex_ptr) -- cgit 1.4.1