* [dpdk-dev] [PATCH] net/enic: fix poor multi-queue Rx performance
@ 2016-10-12 21:22 John Daley
2016-10-19 9:41 ` Bruce Richardson
0 siblings, 1 reply; 2+ messages in thread
From: John Daley @ 2016-10-12 21:22 UTC (permalink / raw)
To: bruce.richardson; +Cc: dev, John Daley
The rx_free_thresh was not being initialized and left at 0
on 1/2 of the RQs which could lead to poor multi-queue
performanace.
Fixes: 856d7ba7ed22 ("net/enic: support scattered Rx")
Signed-off-by: John Daley <johndale@cisco.com>
Reviewed-by: Nelson Escobar <neescoba@cisco.com>
---
drivers/net/enic/enic.h | 2 +-
drivers/net/enic/enic_ethdev.c | 7 ++-----
drivers/net/enic/enic_main.c | 8 ++++++--
3 files changed, 9 insertions(+), 8 deletions(-)
diff --git a/drivers/net/enic/enic.h b/drivers/net/enic/enic.h
index 4ea4e4a..0d7f379 100644
--- a/drivers/net/enic/enic.h
+++ b/drivers/net/enic/enic.h
@@ -256,7 +256,7 @@ extern int enic_stop_rq(struct enic *enic, uint16_t queue_idx);
extern void enic_free_rq(void *rxq);
extern int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
unsigned int socket_id, struct rte_mempool *mp,
- uint16_t nb_desc);
+ uint16_t nb_desc, uint16_t free_thresh);
extern int enic_set_rss_nic_cfg(struct enic *enic);
extern int enic_set_vnic_res(struct enic *enic);
extern void enic_set_hdr_split_size(struct enic *enic, u16 split_hdr_size);
diff --git a/drivers/net/enic/enic_ethdev.c b/drivers/net/enic/enic_ethdev.c
index 4d24bbd..ef20714 100644
--- a/drivers/net/enic/enic_ethdev.c
+++ b/drivers/net/enic/enic_ethdev.c
@@ -315,16 +315,13 @@ static int enicpmd_dev_rx_queue_setup(struct rte_eth_dev *eth_dev,
eth_dev->data->rx_queues[queue_idx] =
(void *)&enic->rq[enic_sop_rq(queue_idx)];
- ret = enic_alloc_rq(enic, queue_idx, socket_id, mp, nb_desc);
+ ret = enic_alloc_rq(enic, queue_idx, socket_id, mp, nb_desc,
+ rx_conf->rx_free_thresh);
if (ret) {
dev_err(enic, "error in allocating rq\n");
return ret;
}
- enic->rq[queue_idx].rx_free_thresh = rx_conf->rx_free_thresh;
- dev_debug(enic, "Set queue_id:%u free thresh:%u\n", queue_idx,
- enic->rq[queue_idx].rx_free_thresh);
-
return enicpmd_dev_setup_intr(enic);
}
diff --git a/drivers/net/enic/enic_main.c b/drivers/net/enic/enic_main.c
index 622b317..eb6ae08 100644
--- a/drivers/net/enic/enic_main.c
+++ b/drivers/net/enic/enic_main.c
@@ -603,7 +603,7 @@ int enic_stop_rq(struct enic *enic, uint16_t queue_idx)
int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
unsigned int socket_id, struct rte_mempool *mp,
- uint16_t nb_desc)
+ uint16_t nb_desc, uint16_t free_thresh)
{
int rc;
uint16_t sop_queue_idx = enic_sop_rq(queue_idx);
@@ -624,6 +624,10 @@ int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
rq_data->socket_id = socket_id;
rq_data->mp = mp;
rq_sop->in_use = 1;
+ rq_sop->rx_free_thresh = free_thresh;
+ rq_data->rx_free_thresh = free_thresh;
+ dev_debug(enic, "Set queue_id:%u free thresh:%u\n", queue_idx,
+ free_thresh);
mbuf_size = (uint16_t)(rte_pktmbuf_data_room_size(mp) -
RTE_PKTMBUF_HEADROOM);
@@ -1236,7 +1240,7 @@ int enic_set_mtu(struct enic *enic, uint16_t new_mtu)
enic_free_rq(rq);
rc = enic_alloc_rq(enic, rq_idx, rq->socket_id, rq->mp,
- rq->tot_nb_desc);
+ rq->tot_nb_desc, rq->rx_free_thresh);
if (rc) {
dev_err(enic,
"Fatal MTU alloc error- No traffic will pass\n");
--
2.10.0
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [dpdk-dev] [PATCH] net/enic: fix poor multi-queue Rx performance
2016-10-12 21:22 [dpdk-dev] [PATCH] net/enic: fix poor multi-queue Rx performance John Daley
@ 2016-10-19 9:41 ` Bruce Richardson
0 siblings, 0 replies; 2+ messages in thread
From: Bruce Richardson @ 2016-10-19 9:41 UTC (permalink / raw)
To: John Daley; +Cc: dev
On Wed, Oct 12, 2016 at 02:22:29PM -0700, John Daley wrote:
> The rx_free_thresh was not being initialized and left at 0
> on 1/2 of the RQs which could lead to poor multi-queue
> performanace.
>
> Fixes: 856d7ba7ed22 ("net/enic: support scattered Rx")
>
> Signed-off-by: John Daley <johndale@cisco.com>
> Reviewed-by: Nelson Escobar <neescoba@cisco.com>
Applied to dpdk-next-net/rel_16_11
/Bruce
^ permalink raw reply [flat|nested] 2+ messages in thread
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