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[udp] Use MAX_LL_NET_HEADER_LEN instead of defining our own UDP_MAX_HLEN 

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown 2010-11-19 15:45:41 +00:00
parent 0d7839678b
commit 5de4fba4f9
2 changed files with 5 additions and 4 deletions
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1
src/include/ipxe/udp.h
View File

@ -23,7 +23,6 @@ struct sockaddr;
* UDP constants
*/
#define UDP_MAX_HLEN 72
#define UDP_MAX_TXIOB ETH_MAX_MTU
#define UDP_MIN_TXIOB ETH_ZLEN

8
src/net/udp.c
View File

@ -9,6 +9,7 @@
#include <ipxe/xfer.h>
#include <ipxe/open.h>
#include <ipxe/uri.h>
#include <ipxe/netdevice.h>
#include <ipxe/udp.h>
/** @file
@ -197,7 +198,8 @@ static int udp_tx ( struct udp_connection *udp, struct io_buffer *iobuf,
int rc;
/* Check we can accommodate the header */
if ( ( rc = iob_ensure_headroom ( iobuf, UDP_MAX_HLEN ) ) != 0 ) {
if ( ( rc = iob_ensure_headroom ( iobuf,
MAX_LL_NET_HEADER_LEN ) ) != 0 ) {
free_iob ( iobuf );
return rc;
}
@ -361,13 +363,13 @@ static struct io_buffer * udp_xfer_alloc_iob ( struct udp_connection *udp,
size_t len ) {
struct io_buffer *iobuf;
iobuf = alloc_iob ( UDP_MAX_HLEN + len );
iobuf = alloc_iob ( MAX_LL_NET_HEADER_LEN + len );
if ( ! iobuf ) {
DBGC ( udp, "UDP %p cannot allocate buffer of length %zd\n",
udp, len );
return NULL;
}
iob_reserve ( iobuf, UDP_MAX_HLEN );
iob_reserve ( iobuf, MAX_LL_NET_HEADER_LEN );
return iobuf;
}