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[Qemu-devel] [PATCH 2/3] e1000: flush queue whenever can_receive can go
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH 2/3] e1000: flush queue whenever can_receive can go from false to true |
Date: |
Thu, 9 Aug 2012 16:45:56 +0200 |
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 <address@hidden>
Cc: Stefan Hajnoczi <address@hidden>
Cc: Jan Kiszka <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
hw/e1000.c | 4 ++++
1 file modificati, 4 inserzioni(+)
diff --git a/hw/e1000.c b/hw/e1000.c
index ae8a6c5..ec3a7c4 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
--
1.7.11.2