4.14-stable review patch. If anyone has any objections, please let me know.
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From: Haiyang Zhang haiyangz@microsoft.com
[ Commit a6fb6aa3cfa9047b62653dbcfc9bcde6e2272b41 upstream. ]
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 haiyangz@microsoft.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/hyperv/rndis_filter.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/net/hyperv/rndis_filter.c +++ b/drivers/net/hyperv/rndis_filter.c @@ -1114,6 +1114,9 @@ void rndis_set_subchannel(struct work_st 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;