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| author | Paolo Bonzini <pbonzini@redhat.com> | 2012-08-09 16:45:56 +0200 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@gmail.com> | 2012-09-14 08:40:31 +0100 |
| commit | e8b4c680b41bd960ecccd9ff076b7b058e0afcd4 (patch) | |
| tree | 6ab1aca5201c3b0bab967c0d40829bd5a4bae386 | |
| parent | 987a9b4800003567b1a47a379255e886a77d57ea (diff) | |
| download | qemu-e8b4c680b41bd960ecccd9ff076b7b058e0afcd4.tar.gz qemu-e8b4c680b41bd960ecccd9ff076b7b058e0afcd4.tar.bz2 qemu-e8b4c680b41bd960ecccd9ff076b7b058e0afcd4.zip | |
e1000: flush queue whenever can_receive can go from false to true
When the guests replenish the receive ring buffer, the network device
should flush its queue of pending packets. This is done with
qemu_flush_queued_packets.
e1000's can_receive can go from false to true when RCTL or RDT are
modified.
Reported-by: Luigi Rizzo <rizzo@iet.unipi.it>
Cc: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Cc: Jan Kiszka <jan.kiszka@siemens.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Amos Kong <akong@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
| -rw-r--r-- | hw/e1000.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/hw/e1000.c b/hw/e1000.c index ae8a6c5523..ec3a7c4ecc 100644 --- a/hw/e1000.c +++ b/hw/e1000.c @@ -295,6 +295,7 @@ set_rx_control(E1000State *s, int index, uint32_t val) s->rxbuf_min_shift = ((val / E1000_RCTL_RDMTS_QUAT) & 3) + 1; DBGOUT(RX, "RCTL: %d, mac_reg[RCTL] = 0x%x\n", s->mac_reg[RDT], s->mac_reg[RCTL]); + qemu_flush_queued_packets(&s->nic->nc); } static void @@ -926,6 +927,9 @@ set_rdt(E1000State *s, int index, uint32_t val) { s->check_rxov = 0; s->mac_reg[index] = val & 0xffff; + if (e1000_has_rxbufs(s, 1)) { + qemu_flush_queued_packets(&s->nic->nc); + } } static void |