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| author | Haiyang Zhang <haiyangz@microsoft.com> | 2016-08-19 14:47:09 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-08-19 22:41:19 -0700 |
| commit | c0b558e5a393b77d2fe53335b5e07ca0e77178f8 (patch) | |
| tree | 2025ab10f73120af39343309c8d4d62b6d9089a6 /drivers/net/hyperv/rndis_filter.c | |
| parent | dc833def42e7f2425f69d83a53bee054e80caea5 (diff) | |
| download | op-kernel-dev-c0b558e5a393b77d2fe53335b5e07ca0e77178f8.zip op-kernel-dev-c0b558e5a393b77d2fe53335b5e07ca0e77178f8.tar.gz | |
hv_netvsc: Implement batching of receive completions
The existing code uses busy retry when unable to send out receive
completions due to full ring buffer. It also gives up retrying after limit
is reached, and causes receive buffer slots not being recycled.
This patch implements batching of receive completions. It also prevents
dropping receive completions due to full ring buffer.
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/hyperv/rndis_filter.c')
| -rw-r--r-- | drivers/net/hyperv/rndis_filter.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c index dd3b335..3ecb2d0 100644 --- a/drivers/net/hyperv/rndis_filter.c +++ b/drivers/net/hyperv/rndis_filter.c @@ -897,7 +897,8 @@ cleanup: /* Wait for all send completions */ wait_event(nvdev->wait_drain, - atomic_read(&nvdev->num_outstanding_sends) == 0); + atomic_read(&nvdev->num_outstanding_sends) == 0 && + atomic_read(&nvdev->num_outstanding_recvs) == 0); if (request) put_rndis_request(dev, request); @@ -953,6 +954,9 @@ static void netvsc_sc_open(struct vmbus_channel *new_sc) set_per_channel_state(new_sc, nvscdev->sub_cb_buf + (chn_index - 1) * NETVSC_PACKET_SIZE); + nvscdev->mrc[chn_index].buf = vzalloc(NETVSC_RECVSLOT_MAX * + sizeof(struct recv_comp_data)); + ret = vmbus_open(new_sc, nvscdev->ring_size * PAGE_SIZE, nvscdev->ring_size * PAGE_SIZE, NULL, 0, netvsc_channel_cb, new_sc); |
