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[intelxl] Use VLAN tag in receive descriptor if present

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The physical function driver does not allow the virtual function to
request that VLAN tags are left unstripped.  Extract and use the VLAN
tag from the receive descriptor if present.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2019-04-27 20:21:22 +01:00
parent fe680c8228
commit c901b5ca45
2 changed files with 19 additions and 3 deletions
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13
src/drivers/net/intelxl.c
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@@ -32,6 +32,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <ipxe/netdevice.h>
#include <ipxe/ethernet.h>
#include <ipxe/if_ether.h>
#include <ipxe/vlan.h>
#include <ipxe/iobuf.h>
#include <ipxe/malloc.h>
#include <ipxe/pci.h>
@@ -1254,6 +1255,7 @@ static void intelxl_poll_rx ( struct net_device *netdev ) {
struct intelxl_rx_writeback_descriptor *rx_wb;
struct io_buffer *iobuf;
unsigned int rx_idx;
unsigned int tag;
size_t len;
/* Check for received packets */
@@ -1273,16 +1275,23 @@ static void intelxl_poll_rx ( struct net_device *netdev ) {
len = INTELXL_RX_WB_LEN ( le32_to_cpu ( rx_wb->len ) );
iob_put ( iobuf, len );
/* Find VLAN device, if applicable */
if ( rx_wb->flags & cpu_to_le32 ( INTELXL_RX_WB_FL_VLAN ) ) {
tag = VLAN_TAG ( le16_to_cpu ( rx_wb->vlan ) );
} else {
tag = 0;
}
/* Hand off to network stack */
if ( rx_wb->flags & cpu_to_le32 ( INTELXL_RX_WB_FL_RXE ) ) {
DBGC ( intelxl, "INTELXL %p RX %d error (length %zd, "
"flags %08x)\n", intelxl, rx_idx, len,
le32_to_cpu ( rx_wb->flags ) );
netdev_rx_err ( netdev, iobuf, -EIO );
vlan_netdev_rx_err ( netdev, tag, iobuf, -EIO );
} else {
DBGC2 ( intelxl, "INTELXL %p RX %d complete (length "
"%zd)\n", intelxl, rx_idx, len );
netdev_rx ( netdev, iobuf );
vlan_netdev_rx ( netdev, tag, iobuf );
}
intelxl->rx.cons++;
}