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A VLAN tagged DHCP request/discover is 4 bytes short

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The problem is that BOOTP_SIZE uses ETHER_HDR_SIZE which is 14 bytes.
If sending a VLAN tagged frame (when env variable vlan is set) this
should be VLAN_ETHER_HDR_SIZE=18 which is what NetSetEther returns.

Signed-off-by: Norbert van Bolhuis <nvbolhuis@aimvalley.nl>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
This commit is contained in:
Norbert van Bolhuis 2009-06-04 09:39:48 +02:00 • committed by Ben Warren
parent 6e0d2fc7fe
commit c9a2aab151
1 changed files with 2 additions and 2 deletions
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4
net/bootp.c
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@ -687,7 +687,7 @@ BootpRequest (void)
* Calculate proper packet lengths taking into account the
* variable size of the options field
*/
pktlen = BOOTP_SIZE - sizeof(bp->bp_vend) + ext_len;
pktlen = ((int)(pkt-NetTxPacket)) + BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + ext_len;
iplen = BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + ext_len;
NetSetIP(iphdr, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, iplen);
NetSetTimeout(SELECT_TIMEOUT, BootpTimeout);
@ -860,7 +860,7 @@ static void DhcpSendRequestPkt(Bootp_t *bp_offer)
NetCopyIP(&OfferedIP, &bp_offer->bp_yiaddr);
extlen = DhcpExtended((u8 *)bp->bp_vend, DHCP_REQUEST, NetDHCPServerIP, OfferedIP);
pktlen = BOOTP_SIZE - sizeof(bp->bp_vend) + extlen;
pktlen = ((int)(pkt-NetTxPacket)) + BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + extlen;
iplen = BOOTP_HDR_SIZE - sizeof(bp->bp_vend) + extlen;
NetSetIP(iphdr, 0xFFFFFFFFL, PORT_BOOTPS, PORT_BOOTPC, iplen);