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Extract packet-padding login from rtl8139.c to a separate pkbpad.c file.

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This commit is contained in:
Michael Brown
2007-01-11 05:25:50 +00:00
parent 6918cf9e9e
commit a3ed0cbbc7
3 changed files with 69 additions and 21 deletions
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23
src/drivers/net/rtl8139.c
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@@ -367,10 +367,6 @@ static void rtl_close ( struct net_device *netdev ) {
*/
static int rtl_transmit ( struct net_device *netdev, struct pk_buff *pkb ) {
struct rtl8139_nic *rtl = netdev->priv;
void *data;
size_t len;
size_t headroom;
signed int pad_len;
/* Check for space in TX ring */
if ( rtl->tx.pkb[rtl->tx.next] != NULL ) {
@@ -378,23 +374,8 @@ static int rtl_transmit ( struct net_device *netdev, struct pk_buff *pkb ) {
return -ENOBUFS;
}
/* Move packet data to start of packet buffer. This will both
* align the data (since packet buffers are aligned to
* PKB_ALIGN) and give us sufficient space for the
* zero-padding
*/
data = pkb->data;
len = pkb_len ( pkb );
headroom = pkb_headroom ( pkb );
pkb_push ( pkb, headroom );
memmove ( pkb->data, data, len );
pkb_unput ( pkb, headroom );
assert ( ( virt_to_bus ( pkb->data ) & 0x3 ) == 0 );
/* Pad to minimum packet length */
pad_len = ( ETH_ZLEN - pkb_len ( pkb ) );
if ( pad_len > 0 )
memset ( pkb_put ( pkb, pad_len ), 0, pad_len );
/* Pad and align packet */
pkb_pad ( pkb, ETH_ZLEN );
/* Add to TX ring */
DBG ( "TX id %d at %lx+%x\n", rtl->tx.next,