diff options
| author | Justin Flammia <jflammia@savantav.com> | 2007-10-29 17:40:35 -0400 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2007-11-01 23:13:00 +0100 |
| commit | e5c794e491a57d829b6d8733e2ed8368a2269abf (patch) | |
| tree | 7ec5bd4000df1bfb0b98aa8d38d1194dfdec43f6 /net | |
| parent | 8287b3b5642c5157392e35b7277ea0c513da50b5 (diff) | |
DHCP Client Fix
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commit e6e505eae94ed721e123e177489291fc4544b7b8
Author: Justin Flammia <jflammia@savantav.com>
Date: Mon Oct 29 17:19:03 2007 -0400
Found a bug in the way the DHCP Request packet is built, where the IP address
that is offered by the server is bound to prematurely. This patch is a fix of
that bug where the IP address offered by the DHCP server is not used until
after the DHCP ACK from the server is received.
Signed-off-by: Justin Flammia <jflammia@savantav.com>
Signed-off-by: Ben Warren <bwarren@qstreams.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/bootp.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/net/bootp.c b/net/bootp.c index 749d3e5e0c..cfe6f8dd6b 100644 --- a/net/bootp.c +++ b/net/bootp.c @@ -850,9 +850,9 @@ static void DhcpSendRequestPkt(Bootp_t *bp_offer) bp->bp_hlen = HWL_ETHER; bp->bp_hops = 0; bp->bp_secs = htons(get_timer(0) / CFG_HZ); - NetCopyIP(&bp->bp_ciaddr, &bp_offer->bp_ciaddr); /* both in network byte order */ - NetCopyIP(&bp->bp_yiaddr, &bp_offer->bp_yiaddr); - NetCopyIP(&bp->bp_siaddr, &bp_offer->bp_siaddr); + /* Do not set the client IP, your IP, or server IP yet, since it hasn't been ACK'ed by + * the server yet */ + /* * RFC3046 requires Relay Agents to discard packets with * nonzero and offered giaddr @@ -870,7 +870,9 @@ static void DhcpSendRequestPkt(Bootp_t *bp_offer) /* * Copy options from OFFER packet if present */ - NetCopyIP(&OfferedIP, &bp->bp_yiaddr); + + /* Copy offered IP into the parameters request list */ + NetCopyIP(&OfferedIP, &bp_offer->bp_yiaddr); extlen = DhcpExtended((u8 *)bp->bp_vend, DHCP_REQUEST, NetDHCPServerIP, OfferedIP); pktlen = BOOTP_SIZE - sizeof(bp->bp_vend) + extlen; @@ -980,3 +982,4 @@ void DhcpRequest(void) #endif #endif + |