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| author | Fam Zheng <famz@redhat.com> | 2015-07-15 18:19:12 +0800 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2015-07-27 14:12:18 +0100 |
| commit | 4594f93a732f1f5936c3a5225481586e24bffa9e (patch) | |
| tree | 090bc45dedad1ddaeefa6e9e54a95024fab1449a | |
| parent | 1ef4a6069f8b4c09c3383cd4b8e27b6ff25b2d41 (diff) | |
| download | qemu-4594f93a732f1f5936c3a5225481586e24bffa9e.tar.gz | |
dp8393x: Flush packets when link comes up
.can_receive callback changes semantics that once return 0, backend will
try sending again until explicitly flushed, change the device to meet
that.
dp8393x_can_receive checks SONIC_CR_RXEN bit in SONIC_CR register and
SONIC_ISR_RBE bit in SONIC_ISR register, try flushing the queue when
either bit is being updated.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Message-id: 1436955553-22791-12-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
| -rw-r--r-- | hw/net/dp8393x.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/hw/net/dp8393x.c b/hw/net/dp8393x.c index cd889bce86..451ff72e50 100644 --- a/hw/net/dp8393x.c +++ b/hw/net/dp8393x.c @@ -327,9 +327,14 @@ static void dp8393x_do_stop_timer(dp8393xState *s) dp8393x_update_wt_regs(s); } +static int dp8393x_can_receive(NetClientState *nc); + static void dp8393x_do_receiver_enable(dp8393xState *s) { s->regs[SONIC_CR] &= ~SONIC_CR_RXDIS; + if (dp8393x_can_receive(s->nic->ncs)) { + qemu_flush_queued_packets(qemu_get_queue(s->nic)); + } } static void dp8393x_do_receiver_disable(dp8393xState *s) @@ -569,6 +574,9 @@ static void dp8393x_write(void *opaque, hwaddr addr, uint64_t data, dp8393x_do_read_rra(s); } dp8393x_update_irq(s); + if (dp8393x_can_receive(s->nic->ncs)) { + qemu_flush_queued_packets(qemu_get_queue(s->nic)); + } break; /* Ignore least significant bit */ case SONIC_RSA: |