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e1000: Dupe offload data on reading old stream

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Old QEMUs only had one set of offload data;  when we only receive
one lot, dupe the received data - that should give us about the
same bug level as the old version.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert 2018-03-28 17:36:26 +01:00 committed by Jason Wang
parent 4ae4bf5bb1
commit 3c4053c52c
1 changed files with 16 additions and 0 deletions
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16
hw/net/e1000.c
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@ -127,6 +127,7 @@ typedef struct E1000State_st {
#define E1000_FLAG_MIT (1 << E1000_FLAG_MIT_BIT)
#define E1000_FLAG_MAC (1 << E1000_FLAG_MAC_BIT)
uint32_t compat_flags;
bool received_tx_tso;
} E1000State;
#define chkflag(x) (s->compat_flags & E1000_FLAG_##x)
@ -1390,6 +1391,20 @@ static int e1000_post_load(void *opaque, int version_id)
qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 500);
}
if (!s->received_tx_tso) {
/* We received only one set of offload data (tx.props)
* and haven't got tx.tso_props. The best we can do
* is dupe the data.
*/
s->tx.tso_props = s->tx.props;
}
return 0;
}
static int e1000_tx_tso_post_load(void *opaque, int version_id)
{
E1000State *s = opaque;
s->received_tx_tso = true;
return 0;
}
@ -1437,6 +1452,7 @@ static const VMStateDescription vmstate_e1000_tx_tso_state = {
.name = "e1000/tx_tso_state",
.version_id = 1,
.minimum_version_id = 1,
.post_load = e1000_tx_tso_post_load,
.fields = (VMStateField[]) {
VMSTATE_UINT8(tx.tso_props.ipcss, E1000State),
VMSTATE_UINT8(tx.tso_props.ipcso, E1000State),