diff mbox series

[next-queue,v4,3/4] i40e: Record number of RXes cleaned during NAPI

Message ID 1665178723-52902-4-git-send-email-jdamato@fastly.com (mailing list archive)
State Awaiting Upstream
Delegated to: Netdev Maintainers
Headers show
Series Add an i40e_napi_poll tracepoint | expand

Checks

Context Check Description
netdev/tree_selection success Guessed tree name to be net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix warning Target tree name not specified in the subject
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers warning 2 maintainers not CCed: edumazet@google.com pabeni@redhat.com
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch warning CHECK: multiple assignments should be avoided WARNING: line length of 84 exceeds 80 columns
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Joe Damato Oct. 7, 2022, 9:38 p.m. UTC 
Adjust i40e_clean_rx_irq to accept an out parameter which records the number of
RX packets cleaned.

No XDP related code is modified and care has been taken to avoid changing
control flow.

Signed-off-by: Joe Damato <jdamato@fastly.com>
Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Acked-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
---
 drivers/net/ethernet/intel/i40e/i40e_txrx.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

Comments

G, GurucharanX Oct. 14, 2022, 3:55 a.m. UTC | #1 
> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@osuosl.org> On Behalf Of
> Joe Damato
> Sent: Saturday, October 8, 2022 3:09 AM
> To: intel-wired-lan@lists.osuosl.org
> Cc: netdev@vger.kernel.org; Joe Damato <jdamato@fastly.com>;
> kuba@kernel.org; davem@davemloft.net
> Subject: [Intel-wired-lan] [next-queue v4 3/4] i40e: Record number of RXes
> cleaned during NAPI
> 
> Adjust i40e_clean_rx_irq to accept an out parameter which records the
> number of RX packets cleaned.
> 
> No XDP related code is modified and care has been taken to avoid changing
> control flow.
> 
> Signed-off-by: Joe Damato <jdamato@fastly.com>
> Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
> Acked-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
> ---
>  drivers/net/ethernet/intel/i40e/i40e_txrx.c | 12 +++++++++---
>  1 file changed, 9 insertions(+), 3 deletions(-)
> 

Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
index 274de1c..5901e58 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
@@ -2425,6 +2425,7 @@  static void i40e_inc_ntc(struct i40e_ring *rx_ring)
  * i40e_clean_rx_irq - Clean completed descriptors from Rx ring - bounce buf
  * @rx_ring: rx descriptor ring to transact packets on
  * @budget: Total limit on number of packets to process
+ * @rx_cleaned: Out parameter of the number of packets processed
  *
  * This function provides a "bounce buffer" approach to Rx interrupt
  * processing.  The advantage to this is that on systems that have
@@ -2433,7 +2434,8 @@  static void i40e_inc_ntc(struct i40e_ring *rx_ring)
  *
  * Returns amount of work completed
  **/
-static int i40e_clean_rx_irq(struct i40e_ring *rx_ring, int budget)
+static int i40e_clean_rx_irq(struct i40e_ring *rx_ring, int budget,
+			     unsigned int *rx_cleaned)
 {
 	unsigned int total_rx_bytes = 0, total_rx_packets = 0, frame_sz = 0;
 	u16 cleaned_count = I40E_DESC_UNUSED(rx_ring);
@@ -2570,6 +2572,8 @@  static int i40e_clean_rx_irq(struct i40e_ring *rx_ring, int budget)
 
 	i40e_update_rx_stats(rx_ring, total_rx_bytes, total_rx_packets);
 
+	*rx_cleaned = total_rx_packets;
+
 	/* guarantee a trip back through this routine if there was a failure */
 	return failure ? budget : (int)total_rx_packets;
 }
@@ -2693,11 +2697,13 @@  int i40e_napi_poll(struct napi_struct *napi, int budget)
 	struct i40e_vsi *vsi = q_vector->vsi;
 	struct i40e_ring *ring;
 	bool tx_clean_complete = true;
+	bool rx_clean_complete = true;
 	bool clean_complete = true;
 	bool arm_wb = false;
 	int budget_per_ring;
 	int work_done = 0;
 	unsigned int tx_cleaned = 0;
+	unsigned int rx_cleaned = 0;
 
 	if (test_bit(__I40E_VSI_DOWN, vsi->state)) {
 		napi_complete(napi);
@@ -2738,12 +2744,12 @@  int i40e_napi_poll(struct napi_struct *napi, int budget)
 	i40e_for_each_ring(ring, q_vector->rx) {
 		int cleaned = ring->xsk_pool ?
 			      i40e_clean_rx_irq_zc(ring, budget_per_ring) :
-			      i40e_clean_rx_irq(ring, budget_per_ring);
+			      i40e_clean_rx_irq(ring, budget_per_ring, &rx_cleaned);
 
 		work_done += cleaned;
 		/* if we clean as many as budgeted, we must not be done */
 		if (cleaned >= budget_per_ring)
-			clean_complete = false;
+			clean_complete = rx_clean_complete = false;
 	}
 
 	/* If work not completed, return budget and polling will return */