diff options
| author | Steven Barth <stbarth@cisco.com> | 2016-05-19 08:54:24 +0200 |
|---|---|---|
| committer | Steven Barth <stbarth@cisco.com> | 2016-05-19 08:54:24 +0200 |
| commit | e63a2837acfaf54c97a9db466bf485e9f7024fe8 (patch) | |
| tree | 1a73d72c653da69905a68042d77241e83a778747 /src/dhcpv4.c | |
| parent | 1fcf0388078c7675187ff4f2f644aaf65138f261 (diff) | |
Add per-host leasetime support
Patch by Daniel Dickinson
Signed-off-by: Steven Barth <steven@midlink.org>
Diffstat (limited to 'src/dhcpv4.c')
| -rw-r--r-- | src/dhcpv4.c | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/src/dhcpv4.c b/src/dhcpv4.c index a657e13..f277a67 100644 --- a/src/dhcpv4.c +++ b/src/dhcpv4.c @@ -176,6 +176,8 @@ int setup_dhcpv4_interface(struct interface *iface, bool enable) iface->ifname); return -1; } + if (lease->dhcpv4_leasetime >= 60) + a->leasetime = lease->dhcpv4_leasetime; a->addr = ntohl(lease->ipaddr.s_addr); memcpy(a->hwaddr, lease->mac.ether_addr_octet, sizeof(a->hwaddr)); memcpy(a->hostname, lease->hostname, hostlen); @@ -382,13 +384,22 @@ static void handle_dhcpv4(void *addr, void *data, size_t len, if (lease) { reply.yiaddr.s_addr = htonl(lease->addr); - uint32_t val = htonl(iface->dhcpv4_leasetime); + uint32_t val; + uint32_t leasetime; + + if (lease->leasetime >= 60) { + leasetime = lease->leasetime; + } else { + leasetime = iface->dhcpv4_leasetime; + } + + val = htonl(leasetime); dhcpv4_put(&reply, &cookie, DHCPV4_OPT_LEASETIME, 4, &val); - val = htonl(500 * iface->dhcpv4_leasetime / 1000); + val = htonl(500 * leasetime / 1000); dhcpv4_put(&reply, &cookie, DHCPV4_OPT_RENEW, 4, &val); - val = htonl(875 * iface->dhcpv4_leasetime / 1000); + val = htonl(875 * leasetime / 1000); dhcpv4_put(&reply, &cookie, DHCPV4_OPT_REBIND, 4, &val); dhcpv4_put(&reply, &cookie, DHCPV4_OPT_NETMASK, 4, &ifnetmask.sin_addr); @@ -622,10 +633,17 @@ static struct dhcpv4_assignment* dhcpv4_lease(struct interface *iface, a->head.prev->next = &a->head; } + uint32_t leasetime; + if (a->leasetime) { + leasetime = a->leasetime; + } else { + leasetime = iface->dhcpv4_leasetime; + } + // Was only a solicitation: mark binding for removal if (assigned && a->valid_until < now) { a->valid_until = (msg == DHCPV4_MSG_DISCOVER) ? 0 : - (now + iface->dhcpv4_leasetime); + (now + leasetime); } else if (!assigned && a) { // Cleanup failed assignment free(a); a = NULL; |