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pcnet: Drop pcnet_can_receive

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pcnet_receive already checks the conditions and drop packets if false.
Due to the new semantics since 6e99c63 ("net/socket: Drop
net_socket_can_send"), having .can_receive returning 0 requires us to
explicitly flush the queued packets when the conditions are becoming
true, but queuing the packets when guest driver is not ready doesn't
make much sense.

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Message-id: 1436955553-22791-3-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Fam Zheng 2015-07-15 18:19:03 +08:00 • committed by Stefan Hajnoczi
parent 8c8c460c5f
commit b0ba0b9b6b
4 changed files with 0 additions and 12 deletions
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9
hw/net/pcnet.c
View file

@ -995,15 +995,6 @@ static int pcnet_tdte_poll(PCNetState *s)
return !!(CSR_CXST(s) & 0x8000);
}
int pcnet_can_receive(NetClientState *nc)
{
PCNetState *s = qemu_get_nic_opaque(nc);
if (CSR_STOP(s) || CSR_SPND(s))
return 0;
return sizeof(s->buffer)-16;
}
#define MIN_BUF_SIZE 60
ssize_t pcnet_receive(NetClientState *nc, const uint8_t *buf, size_t size_)