[U-Boot] [PATCH] A VLAN tagged DHCP request/discover is 4 bytes short
Ben Warren
biggerbadderben at gmail.com
Mon Jun 15 09:05:25 CEST 2009
Norbert van Bolhuis wrote:
> 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.
>
> diff --git a/net/bootp.c b/net/bootp.c
> index 3dea70a..77057c6 100644
> --- a/net/bootp.c
> +++ b/net/bootp.c
> @@ -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);
>
>
Applied to net repo.
thanks,
Ben
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