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hv_netvsc: Set tx_table to equal weight after subchannels open

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In some cases, like internal vSwitch, the host doesn't provide
send indirection table updates. This patch sets the table to be
equal weight after subchannels are all open. Otherwise, all workload
will be on one TX channel.

As tested, this patch has largely increased the throughput over
internal vSwitch.

Signed-off-by: Haiyang Zhang <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Haiyang Zhang authored and David S. Miller committed 2017-10-29 12:09:23 +09:00
1 parent 90e229ef61
commit a6fb6aa3cf
1 file changed
+3
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drivers/net/hyperv/rndis_filter.c
+3
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@@ -1114,6 +1114,9 @@ void rndis_set_subchannel(struct work_struct *w)
netif_set_real_num_tx_queues(ndev, nvdev->num_chn);
netif_set_real_num_rx_queues(ndev, nvdev->num_chn);
for (i = 0; i < VRSS_SEND_TAB_SIZE; i++)
ndev_ctx->tx_table[i] = i % nvdev->num_chn;
rtnl_unlock();
return;