[PATCH] DHCP: fix option 54 passing
yegorslists at googlemail.com
yegorslists at googlemail.com
Mon Feb 19 23:47:50 PST 2018
From: Yegor Yefremov <yegorslists at googlemail.com>
Though variable net_dhcp_server_ip was declared and used as a
function parameter it was never assigned. That's why a DHCP
request was sent without option 54 set. Some DHCP server for
example dnsmasq didn't accept such a packet.
As both offered IP address and server IP are stored in the global
dhcp_result structure we don't need either net_dhcp_server_ip or
OfferedIP variables and can use the addresses from dhcp_result
directly.
Signed-off-by: Yegor Yefremov <yegorslists at googlemail.com>
---
net/dhcp.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/net/dhcp.c b/net/dhcp.c
index 946efaa..d30551d 100644
--- a/net/dhcp.c
+++ b/net/dhcp.c
@@ -76,7 +76,6 @@ typedef enum {
static uint32_t Bootp_id;
static dhcp_state_t dhcp_state;
-static IPaddr_t net_dhcp_server_ip;
static uint64_t dhcp_start;
static struct eth_device *dhcp_edev;
struct dhcp_req_param dhcp_param;
@@ -350,7 +349,6 @@ static void dhcp_send_request_packet(struct bootp *bp_offer)
{
struct bootp *bp;
int extlen;
- IPaddr_t OfferedIP;
debug("%s: Sending DHCPREQUEST\n", __func__);
@@ -378,9 +376,8 @@ static void dhcp_send_request_packet(struct bootp *bp_offer)
/*
* Copy options from OFFER packet if present
*/
- net_copy_ip(&OfferedIP, &bp_offer->bp_yiaddr);
- extlen = dhcp_extended(bp->bp_vend, DHCP_REQUEST, net_dhcp_server_ip,
- OfferedIP);
+ extlen = dhcp_extended(bp->bp_vend, DHCP_REQUEST, dhcp_result->serverip,
+ dhcp_result->ip);
debug("Transmitting DHCPREQUEST packet\n");
net_udp_send(dhcp_con, sizeof(*bp) + extlen);
--
2.1.4
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