[dpdk-dev] [PATCH] ixgbe/base: fix VF multi-queue failure

[dpdk-dev] [PATCH] ixgbe/base: fix VF multi-queue failure

[Wenzhuo Lu]

When starting testpmd with multiple queues on a ixgbe VF
port, it failed with this printing, "nb_rxq(4) is greater
than max_rx_queues(1)".

The root cause is the VF doesn't get the right max rx queue
number from PF and it uses the default value 1.
VF max rx queue number is set by PF through mailbox messages.
The message for this setting only supports version 1.1. As
message version is updated to 1.2, VF cannot parse the rx queue
number setting message correctly.

This patch raise a specific base code update for this issue.

Fixes: 72dec9e37a84 ("ixgbe: support multicast promiscuous mode on VF")
Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
---
 drivers/net/ixgbe/base/ixgbe_vf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ixgbe/base/ixgbe_vf.c b/drivers/net/ixgbe/base/ixgbe_vf.c
index dbb5194..40dc1c8 100644
--- a/drivers/net/ixgbe/base/ixgbe_vf.c
+++ b/drivers/net/ixgbe/base/ixgbe_vf.c
@@ -675,6 +675,7 @@ int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs,
 	/* do nothing if API doesn't support ixgbevf_get_queues */
 	switch (hw->api_version) {
 	case ixgbe_mbox_api_11:
+	case ixgbe_mbox_api_12:
 		break;
 	default:
 		return 0;
-- 
1.9.3

Re: [dpdk-dev] [PATCH] ixgbe/base: fix VF multi-queue failure

[Thomas Monjalon]

2016-03-30 10:46, Wenzhuo Lu:
> When starting testpmd with multiple queues on a ixgbe VF
> port, it failed with this printing, "nb_rxq(4) is greater
> than max_rx_queues(1)".
> 
> The root cause is the VF doesn't get the right max rx queue
> number from PF and it uses the default value 1.
> VF max rx queue number is set by PF through mailbox messages.
> The message for this setting only supports version 1.1. As
> message version is updated to 1.2, VF cannot parse the rx queue
> number setting message correctly.
> 
> This patch raise a specific base code update for this issue.
> 
> Fixes: 72dec9e37a84 ("ixgbe: support multicast promiscuous mode on VF")
> Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>

Applied, thanks