* [dpdk-dev] [PATCH] net/i40e: add warning log for VF multi-queue Rx interrupt
@ 2020-01-09 7:20 Lunyuan Cui
0 siblings, 0 replies; only message in thread
From: Lunyuan Cui @ 2020-01-09 7:20 UTC (permalink / raw)
To: dev; +Cc: Beilei Xing, Qi Zhang, Qiming Yang, Lunyuan Cui
Count of queues per port is over the max usable vector,
it will cause missing packets. This patch is in order to
add suggestive logs.
Signed-off-by: Lunyuan Cui <lunyuanx.cui@intel.com>
---
drivers/net/i40e/i40e_ethdev_vf.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c
index 479f8282c..68a0cb8fa 100644
--- a/drivers/net/i40e/i40e_ethdev_vf.c
+++ b/drivers/net/i40e/i40e_ethdev_vf.c
@@ -682,8 +682,12 @@ i40evf_config_irq_map(struct rte_eth_dev *dev)
intr_handle->intr_vec[i] = vector_id;
if (vector_id > I40E_MISC_VEC_ID)
vector_id++;
- if (vector_id > nb_msix)
+ if (vector_id >= nb_msix) {
+ PMD_DRV_LOG(WARNING, "Count of queues per port is "
+ "over the max usable vector(%d), it will "
+ "cause missing packets.", nb_msix - 1);
vector_id = I40E_RX_VEC_START;
+ }
}
args.ops = VIRTCHNL_OP_CONFIG_IRQ_MAP;
--
2.17.1
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