virtio-net: Use virtual time for RSC timers

Receive coalescing is visible to the target machine, so its timers
should use virtual time like other timers in virtio-net, to be
compatible with record-replay.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20240813050638.446172-10-npiggin@gmail.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240813202329.1237572-18-alex.bennee@linaro.org>

hw/net/virtio-net.c

@@ -2124,7 +2124,7 @@ static void virtio_net_rsc_purge(void *opq)
     chain->stat.timer++;
     if (!QTAILQ_EMPTY(&chain->buffers)) {
         timer_mod(chain->drain_timer,
-              qemu_clock_get_ns(QEMU_CLOCK_HOST) + chain->n->rsc_timeout);
+              qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + chain->n->rsc_timeout);
     }
 }
 
@@ -2360,7 +2360,7 @@ static size_t virtio_net_rsc_do_coalesce(VirtioNetRscChain *chain,
         chain->stat.empty_cache++;
         virtio_net_rsc_cache_buf(chain, nc, buf, size);
         timer_mod(chain->drain_timer,
-              qemu_clock_get_ns(QEMU_CLOCK_HOST) + chain->n->rsc_timeout);
+              qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + chain->n->rsc_timeout);
         return size;
     }
 
@@ -2598,7 +2598,7 @@ static VirtioNetRscChain *virtio_net_rsc_lookup_chain(VirtIONet *n,
         chain->max_payload = VIRTIO_NET_MAX_IP6_PAYLOAD;
         chain->gso_type = VIRTIO_NET_HDR_GSO_TCPV6;
     }
-    chain->drain_timer = timer_new_ns(QEMU_CLOCK_HOST,
+    chain->drain_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
                                       virtio_net_rsc_purge, chain);
     memset(&chain->stat, 0, sizeof(chain->stat));