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slirp: Strictly associate DHCP/BOOTP and TFTP with virtual host

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Instead of accepting every DHCP/BOOTP and TFTP packet, only invoke the
built-in servers if the target is the virtual host.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Jan Kiszka 2011-07-20 12:20:15 +02:00 committed by Anthony Liguori
parent c54ed5bcdd
commit 5a82362ad0
1 changed files with 8 additions and 5 deletions
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7
slirp/udp.c
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@ -120,7 +120,9 @@ udp_input(register struct mbuf *m, int iphlen)
/*
* handle DHCP/BOOTP
*/
if (ntohs(uh->uh_dport) == BOOTP_SERVER) {
if (ntohs(uh->uh_dport) == BOOTP_SERVER &&
(ip->ip_dst.s_addr == slirp->vhost_addr.s_addr ||
ip->ip_dst.s_addr == 0xffffffff)) {
bootp_input(m);
goto bad;
}
@ -128,7 +130,8 @@ udp_input(register struct mbuf *m, int iphlen)
/*
* handle TFTP
*/
if (ntohs(uh->uh_dport) == TFTP_SERVER) {
if (ntohs(uh->uh_dport) == TFTP_SERVER &&
ip->ip_dst.s_addr == slirp->vhost_addr.s_addr) {
tftp_input(m);
goto bad;
}