On 11/16/2017 12:43 PM, Thomas Huth wrote:
On 16.11.2017 17:59, Thomas Huth wrote:
On 06.11.2017 21:35, Mike Nawrocki wrote:
The simple transmission mode was treating the area immediately after the
transmit command block (TCB) as if it were a transmit buffer descriptor,
when in reality it is simply the packet data. This change simply copies
the data following the TCB into the packet buffer.
Signed-off-by: Mike Nawrocki <[email protected]>
---
hw/net/eepro100.c | 18 +++---------------
1 file changed, 3 insertions(+), 15 deletions(-)
diff --git a/hw/net/eepro100.c b/hw/net/eepro100.c
index 80b8f47c4b..91dd058010 100644
--- a/hw/net/eepro100.c
+++ b/hw/net/eepro100.c
@@ -774,23 +774,11 @@ static void tx_command(EEPRO100State *s)
}
assert(tcb_bytes <= sizeof(buf));
while (size < tcb_bytes) {
- uint32_t tx_buffer_address = ldl_le_pci_dma(&s->dev, tbd_address);
- uint16_t tx_buffer_size = lduw_le_pci_dma(&s->dev, tbd_address + 4);
-#if 0
- uint16_t tx_buffer_el = lduw_le_pci_dma(&s->dev, tbd_address + 6);
-#endif
- if (tx_buffer_size == 0) {
- /* Prevent an endless loop. */
- logout("loop in %s:%u\n", __FILE__, __LINE__);
- break;
- }
- tbd_address += 8;
TRACE(RXTX, logout
("TBD (simplified mode): buffer address 0x%08x, size 0x%04x\n",
- tx_buffer_address, tx_buffer_size));
- tx_buffer_size = MIN(tx_buffer_size, sizeof(buf) - size);
- pci_dma_read(&s->dev, tx_buffer_address, &buf[size], tx_buffer_size);
- size += tx_buffer_size;
+ tbd_address, tcb_bytes));
+ pci_dma_read(&s->dev, tbd_address, &buf[size], tcb_bytes);
+ size += tcb_bytes;
}
if (tbd_array == 0xffffffff) {
/* Simplified mode. Was already handled by code above. */
Hi,
I've got no clue why, but apparently this patch introduced a regression
in rc1: The tests/pxe-test is now failing on a big endian (s390x) host
when testing the i82550 device.
It's working fine with commit 8fa5ad6dfb66b6c695aa6a6b54b7031c (and
2.11-rc0), and it's broken starting with commit
1865e288a823c764cd4344d704e33344 ... do you have any clue what might be
wrong here now?
This patch seems to fix the issue for me:
diff --git a/hw/net/eepro100.c b/hw/net/eepro100.c
index a63ed2c..03e00f7 100644
--- a/hw/net/eepro100.c
+++ b/hw/net/eepro100.c
@@ -756,8 +756,8 @@ static void read_cb(EEPRO100State *s)
static void tx_command(EEPRO100State *s)
{
- uint32_t tbd_array = le32_to_cpu(s->tx.tbd_array_addr);
- uint16_t tcb_bytes = (le16_to_cpu(s->tx.tcb_bytes) & 0x3fff);
+ uint32_t tbd_array = s->tx.tbd_array_addr;
+ uint16_t tcb_bytes = s->tx.tcb_bytes & 0x3fff;
/* Sends larger than MAX_ETH_FRAME_SIZE are allowed, up to 2600 bytes. */
uint8_t buf[2600];
uint16_t size = 0;
Does that make sense? I think the fields are already swapped in
read_cb(), so no need to swap them in tx_command() again?
Thomas
That makes sense to me. Not entirely sure why my patch caused the
regression, but your patch seems like the correct behavior here.
Thanks,
Mike
