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[pxe] Always allow MAX_LL_HEADER_LEN for the link-layer header 

Signed-off-by: Michael Brown <mcb30@ipxe.org>
pull/1/head
Michael Brown 2010-11-19 15:37:08 +00:00
parent 308615cd97
commit fb78d086f1
1 changed files with 2 additions and 4 deletions
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6
src/arch/i386/interface/pxe/pxe_undi.c
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@ -228,7 +228,6 @@ PXENV_EXIT_t pxenv_undi_transmit ( struct s_PXENV_UNDI_TRANSMIT
struct ll_protocol *ll_protocol = pxe_netdev->ll_protocol;
char destaddr[MAX_LL_ADDR_LEN];
const void *ll_dest;
size_t ll_hlen = ll_protocol->ll_header_len;
size_t len;
unsigned int i;
int rc;
@ -248,7 +247,6 @@ PXENV_EXIT_t pxenv_undi_transmit ( struct s_PXENV_UNDI_TRANSMIT
case P_RARP: net_protocol = &rarp_protocol; break;
case P_UNKNOWN:
net_protocol = NULL;
ll_hlen = 0;
break;
default:
DBG2 ( " %02x invalid protocol\n", undi_transmit->Protocol );
@ -271,13 +269,13 @@ PXENV_EXIT_t pxenv_undi_transmit ( struct s_PXENV_UNDI_TRANSMIT
}
/* Allocate and fill I/O buffer */
iobuf = alloc_iob ( ll_hlen + len );
iobuf = alloc_iob ( MAX_LL_HEADER_LEN + len );
if ( ! iobuf ) {
DBG2 ( " could not allocate iobuf\n" );
undi_transmit->Status = PXENV_STATUS_OUT_OF_RESOURCES;
return PXENV_EXIT_FAILURE;
}
iob_reserve ( iobuf, ll_hlen );
iob_reserve ( iobuf, MAX_LL_HEADER_LEN );
copy_from_real ( iob_put ( iobuf, tbd.ImmedLength ), tbd.Xmit.segment,
tbd.Xmit.offset, tbd.ImmedLength );
for ( i = 0 ; i < tbd.DataBlkCount ; i++ ) {