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vmxnet3: iPXE compatibility fixes 

iPXE vmxnet3 driver makes a few assumptions regarding device operation
that were missed during testing with Linux and Windows drivers.
This patch adds following logic:
  1. Additional GET commands processing added
  2. Max number of RX chunks should be set to 1 when driver passes 0
     via corresponding shared memory field
  3. Enforecement for max chunks number added

Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Dmitry Fleytman 2013-03-28 10:53:29 +02:00 committed by Stefan Hajnoczi
parent 9196dd411d
commit 3e948fd385
1 changed files with 11 additions and 0 deletions
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11
hw/vmxnet3.c
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@ -1033,6 +1033,7 @@ vmxnet3_indicate_packet(VMXNET3State *s)
is_head = false;
ready_rxcd_pa = new_rxcd_pa;
new_rxcd_pa = 0;
num_frags++;
}
if (0 != ready_rxcd_pa) {
@ -1324,6 +1325,10 @@ static void vmxnet3_activate_device(VMXNET3State *s)
s->max_rx_frags =
VMXNET3_READ_DRV_SHARED16(s->drv_shmem, devRead.misc.maxNumRxSG);
if (s->max_rx_frags == 0) {
s->max_rx_frags = 1;
}
VMW_CFPRN("Max RX fragments is %u", s->max_rx_frags);
s->event_int_idx =
@ -1524,6 +1529,12 @@ static uint64_t vmxnet3_get_command_status(VMXNET3State *s)
VMW_CFPRN("Device active: %" PRIx64, ret);
break;
case VMXNET3_CMD_RESET_DEV:
case VMXNET3_CMD_QUIESCE_DEV:
case VMXNET3_CMD_GET_QUEUE_STATUS:
ret = 0;
break;
case VMXNET3_CMD_GET_LINK:
ret = s->link_status_and_speed;
VMW_CFPRN("Link and speed: %" PRIx64, ret);