[net,v3] octeontx2-pf: consider both Rx and Tx packet stats for adaptive interrupt coalescing
Commit Message
From: Naveen Mamindlapalli <naveenm@marvell.com>
The current adaptive interrupt coalescing code updates only rx
packet stats for dim algorithm. This patch also updates tx packet
stats which will be useful when there is only tx traffic.
Also moved configuring hardware adaptive interrupt setting to
driver dim callback.
Fixes: 6e144b47f560 ("octeontx2-pf: Add support for adaptive interrupt coalescing")
Signed-off-by: Naveen Mamindlapalli <naveenm@marvell.com>
Signed-off-by: Suman Ghosh <sumang@marvell.com>
---
v3 changes:
- Updated signed-off-by signature.
v2 changes:
- Missed adding the fixes tag in v1. Added the same in v2.
.../ethernet/marvell/octeontx2/nic/otx2_pf.c | 9 +++++++++
.../marvell/octeontx2/nic/otx2_txrx.c | 20 +++++++++----------
2 files changed, 19 insertions(+), 10 deletions(-)
Comments
On 01.12.2023 06:33, Suman Ghosh wrote:
> From: Naveen Mamindlapalli <naveenm@marvell.com>
>
> The current adaptive interrupt coalescing code updates only rx
> packet stats for dim algorithm. This patch also updates tx packet
> stats which will be useful when there is only tx traffic.
> Also moved configuring hardware adaptive interrupt setting to
> driver dim callback.
>
> Fixes: 6e144b47f560 ("octeontx2-pf: Add support for adaptive interrupt coalescing")
> Signed-off-by: Naveen Mamindlapalli <naveenm@marvell.com>
> Signed-off-by: Suman Ghosh <sumang@marvell.com>
> ---
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
> v3 changes:
> - Updated signed-off-by signature.
>
> v2 changes:
> - Missed adding the fixes tag in v1. Added the same in v2.
>
> .../ethernet/marvell/octeontx2/nic/otx2_pf.c | 9 +++++++++
> .../marvell/octeontx2/nic/otx2_txrx.c | 20 +++++++++----------
> 2 files changed, 19 insertions(+), 10 deletions(-)
>
Hello:
This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:
On Fri, 1 Dec 2023 11:03:30 +0530 you wrote:
> From: Naveen Mamindlapalli <naveenm@marvell.com>
>
> The current adaptive interrupt coalescing code updates only rx
> packet stats for dim algorithm. This patch also updates tx packet
> stats which will be useful when there is only tx traffic.
> Also moved configuring hardware adaptive interrupt setting to
> driver dim callback.
>
> [...]
Here is the summary with links:
- [net,v3] octeontx2-pf: consider both Rx and Tx packet stats for adaptive interrupt coalescing
https://git.kernel.org/netdev/net/c/adbf100fc470
You are awesome, thank you!
@@ -1685,6 +1685,14 @@ static void otx2_do_set_rx_mode(struct otx2_nic *pf)
mutex_unlock(&pf->mbox.lock);
}
+static void otx2_set_irq_coalesce(struct otx2_nic *pfvf)
+{
+ int cint;
+
+ for (cint = 0; cint < pfvf->hw.cint_cnt; cint++)
+ otx2_config_irq_coalescing(pfvf, cint);
+}
+
static void otx2_dim_work(struct work_struct *w)
{
struct dim_cq_moder cur_moder;
@@ -1700,6 +1708,7 @@ static void otx2_dim_work(struct work_struct *w)
CQ_TIMER_THRESH_MAX : cur_moder.usec;
pfvf->hw.cq_ecount_wait = (cur_moder.pkts > NAPI_POLL_WEIGHT) ?
NAPI_POLL_WEIGHT : cur_moder.pkts;
+ otx2_set_irq_coalesce(pfvf);
dim->state = DIM_START_MEASURE;
}
@@ -512,11 +512,18 @@ static void otx2_adjust_adaptive_coalese(struct otx2_nic *pfvf, struct otx2_cq_p
{
struct dim_sample dim_sample;
u64 rx_frames, rx_bytes;
+ u64 tx_frames, tx_bytes;
rx_frames = OTX2_GET_RX_STATS(RX_BCAST) + OTX2_GET_RX_STATS(RX_MCAST) +
OTX2_GET_RX_STATS(RX_UCAST);
rx_bytes = OTX2_GET_RX_STATS(RX_OCTS);
- dim_update_sample(pfvf->napi_events, rx_frames, rx_bytes, &dim_sample);
+ tx_bytes = OTX2_GET_TX_STATS(TX_OCTS);
+ tx_frames = OTX2_GET_TX_STATS(TX_UCAST);
+
+ dim_update_sample(pfvf->napi_events,
+ rx_frames + tx_frames,
+ rx_bytes + tx_bytes,
+ &dim_sample);
net_dim(&cq_poll->dim, dim_sample);
}
@@ -558,16 +565,9 @@ int otx2_napi_handler(struct napi_struct *napi, int budget)
if (pfvf->flags & OTX2_FLAG_INTF_DOWN)
return workdone;
- /* Check for adaptive interrupt coalesce */
- if (workdone != 0 &&
- ((pfvf->flags & OTX2_FLAG_ADPTV_INT_COAL_ENABLED) ==
- OTX2_FLAG_ADPTV_INT_COAL_ENABLED)) {
- /* Adjust irq coalese using net_dim */
+ /* Adjust irq coalese using net_dim */
+ if (pfvf->flags & OTX2_FLAG_ADPTV_INT_COAL_ENABLED)
otx2_adjust_adaptive_coalese(pfvf, cq_poll);
- /* Update irq coalescing */
- for (i = 0; i < pfvf->hw.cint_cnt; i++)
- otx2_config_irq_coalescing(pfvf, i);
- }
if (unlikely(!filled_cnt)) {
struct refill_work *work;