diff mbox series

[RFC,v3,net-next,4/7] sfc: account XDP TXes in netdev base stats

Message ID 0c9c2e2b13aa82de9cedca478a8ee6e8cf22fcc6.1726593633.git.ecree.xilinx@gmail.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series sfc: per-queue stats | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 17 this patch: 17
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers warning 5 maintainers not CCed: bpf@vger.kernel.org ast@kernel.org hawk@kernel.org daniel@iogearbox.net john.fastabend@gmail.com
netdev/build_clang success Errors and warnings before: 17 this patch: 17
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
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: 22 this patch: 22
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 150 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 58 this patch: 58
netdev/source_inline success Was 0 now: 0

Commit Message

edward.cree@amd.com Sept. 18, 2024, 4:14 p.m. UTC 
From: Edward Cree <ecree.xilinx@gmail.com>

When we handle a TX completion for an XDP packet, it is not counted
 in the per-TXQ netdev stats.  Record it in new internal counters,
 and include those in the device-wide total in efx_get_base_stats().

Signed-off-by: Edward Cree <ecree.xilinx@gmail.com>
---
 drivers/net/ethernet/sfc/efx.c        |  3 +++
 drivers/net/ethernet/sfc/net_driver.h |  6 ++++++
 drivers/net/ethernet/sfc/tx.c         |  6 +++++-
 drivers/net/ethernet/sfc/tx_common.c  | 28 +++++++++++++++++++++------
 drivers/net/ethernet/sfc/tx_common.h  |  4 +++-
 5 files changed, 39 insertions(+), 8 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index 21dc4b885542..ea1e0e8ecbdd 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -690,6 +690,9 @@  static void efx_get_base_stats(struct net_device *net_dev,
 				tx->packets += tx_queue->old_complete_packets;
 				tx->bytes += tx_queue->old_complete_bytes;
 			}
+			/* Include XDP TX in device-wide stats */
+			tx->packets += tx_queue->complete_xdp_packets;
+			tx->bytes += tx_queue->complete_xdp_bytes;
 		}
 	}
 }
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index 83c33c1ca120..aba106d03d41 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -216,6 +216,10 @@  struct efx_tx_buffer {
  *	created.  For TSO, counts the superframe size, not the sizes of
  *	generated frames on the wire (i.e. the headers are only counted
  *	once)
+ * @complete_xdp_packets: Number of XDP TX packets completed since this
+ *	struct was created.
+ * @complete_xdp_bytes: Number of XDP TX bytes completed since this
+ *	struct was created.
  * @completed_timestamp_major: Top part of the most recent tx timestamp.
  * @completed_timestamp_minor: Low part of the most recent tx timestamp.
  * @insert_count: Current insert pointer
@@ -281,6 +285,8 @@  struct efx_tx_queue {
 	unsigned int pkts_compl;
 	unsigned long complete_packets;
 	unsigned long complete_bytes;
+	unsigned long complete_xdp_packets;
+	unsigned long complete_xdp_bytes;
 	u32 completed_timestamp_major;
 	u32 completed_timestamp_minor;
 
diff --git a/drivers/net/ethernet/sfc/tx.c b/drivers/net/ethernet/sfc/tx.c
index fe2d476028e7..822ec6564b2d 100644
--- a/drivers/net/ethernet/sfc/tx.c
+++ b/drivers/net/ethernet/sfc/tx.c
@@ -553,6 +553,7 @@  netdev_tx_t efx_hard_start_xmit(struct sk_buff *skb,
 
 void efx_xmit_done_single(struct efx_tx_queue *tx_queue)
 {
+	unsigned int xdp_pkts_compl = 0, xdp_bytes_compl = 0;
 	unsigned int pkts_compl = 0, bytes_compl = 0;
 	unsigned int efv_pkts_compl = 0;
 	unsigned int read_ptr;
@@ -577,7 +578,8 @@  void efx_xmit_done_single(struct efx_tx_queue *tx_queue)
 		if (buffer->flags & EFX_TX_BUF_SKB)
 			finished = true;
 		efx_dequeue_buffer(tx_queue, buffer, &pkts_compl, &bytes_compl,
-				   &efv_pkts_compl);
+				   &efv_pkts_compl, &xdp_pkts_compl,
+				   &xdp_bytes_compl);
 
 		++tx_queue->read_count;
 		read_ptr = tx_queue->read_count & tx_queue->ptr_mask;
@@ -585,6 +587,8 @@  void efx_xmit_done_single(struct efx_tx_queue *tx_queue)
 
 	tx_queue->pkts_compl += pkts_compl;
 	tx_queue->bytes_compl += bytes_compl;
+	tx_queue->complete_xdp_packets += xdp_pkts_compl;
+	tx_queue->complete_xdp_bytes += xdp_bytes_compl;
 
 	EFX_WARN_ON_PARANOID(pkts_compl + efv_pkts_compl != 1);
 
diff --git a/drivers/net/ethernet/sfc/tx_common.c b/drivers/net/ethernet/sfc/tx_common.c
index 6d47927e1c2c..2013a609f9be 100644
--- a/drivers/net/ethernet/sfc/tx_common.c
+++ b/drivers/net/ethernet/sfc/tx_common.c
@@ -112,12 +112,14 @@  void efx_fini_tx_queue(struct efx_tx_queue *tx_queue)
 
 	/* Free any buffers left in the ring */
 	while (tx_queue->read_count != tx_queue->write_count) {
+		unsigned int xdp_pkts_compl = 0, xdp_bytes_compl = 0;
 		unsigned int pkts_compl = 0, bytes_compl = 0;
 		unsigned int efv_pkts_compl = 0;
 
 		buffer = &tx_queue->buffer[tx_queue->read_count & tx_queue->ptr_mask];
 		efx_dequeue_buffer(tx_queue, buffer, &pkts_compl, &bytes_compl,
-				   &efv_pkts_compl);
+				   &efv_pkts_compl, &xdp_pkts_compl,
+				   &xdp_bytes_compl);
 
 		++tx_queue->read_count;
 	}
@@ -153,7 +155,9 @@  void efx_dequeue_buffer(struct efx_tx_queue *tx_queue,
 			struct efx_tx_buffer *buffer,
 			unsigned int *pkts_compl,
 			unsigned int *bytes_compl,
-			unsigned int *efv_pkts_compl)
+			unsigned int *efv_pkts_compl,
+			unsigned int *xdp_pkts,
+			unsigned int *xdp_bytes)
 {
 	if (buffer->unmap_len) {
 		struct device *dma_dev = &tx_queue->efx->pci_dev->dev;
@@ -198,6 +202,10 @@  void efx_dequeue_buffer(struct efx_tx_queue *tx_queue,
 			   tx_queue->queue, tx_queue->read_count);
 	} else if (buffer->flags & EFX_TX_BUF_XDP) {
 		xdp_return_frame_rx_napi(buffer->xdpf);
+		if (xdp_pkts)
+			(*xdp_pkts)++;
+		if (xdp_bytes)
+			(*xdp_bytes) += buffer->xdpf->len;
 	}
 
 	buffer->len = 0;
@@ -213,7 +221,9 @@  static void efx_dequeue_buffers(struct efx_tx_queue *tx_queue,
 				unsigned int index,
 				unsigned int *pkts_compl,
 				unsigned int *bytes_compl,
-				unsigned int *efv_pkts_compl)
+				unsigned int *efv_pkts_compl,
+				unsigned int *xdp_pkts,
+				unsigned int *xdp_bytes)
 {
 	struct efx_nic *efx = tx_queue->efx;
 	unsigned int stop_index, read_ptr;
@@ -233,7 +243,7 @@  static void efx_dequeue_buffers(struct efx_tx_queue *tx_queue,
 		}
 
 		efx_dequeue_buffer(tx_queue, buffer, pkts_compl, bytes_compl,
-				   efv_pkts_compl);
+				   efv_pkts_compl, xdp_pkts, xdp_bytes);
 
 		++tx_queue->read_count;
 		read_ptr = tx_queue->read_count & tx_queue->ptr_mask;
@@ -256,15 +266,18 @@  void efx_xmit_done_check_empty(struct efx_tx_queue *tx_queue)
 int efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index)
 {
 	unsigned int fill_level, pkts_compl = 0, bytes_compl = 0;
+	unsigned int xdp_pkts_compl = 0, xdp_bytes_compl = 0;
 	unsigned int efv_pkts_compl = 0;
 	struct efx_nic *efx = tx_queue->efx;
 
 	EFX_WARN_ON_ONCE_PARANOID(index > tx_queue->ptr_mask);
 
 	efx_dequeue_buffers(tx_queue, index, &pkts_compl, &bytes_compl,
-			    &efv_pkts_compl);
+			    &efv_pkts_compl, &xdp_pkts_compl, &xdp_bytes_compl);
 	tx_queue->pkts_compl += pkts_compl;
 	tx_queue->bytes_compl += bytes_compl;
+	tx_queue->complete_xdp_packets += xdp_pkts_compl;
+	tx_queue->complete_xdp_bytes += xdp_bytes_compl;
 
 	if (pkts_compl + efv_pkts_compl > 1)
 		++tx_queue->merge_events;
@@ -293,6 +306,8 @@  int efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index)
 void efx_enqueue_unwind(struct efx_tx_queue *tx_queue,
 			unsigned int insert_count)
 {
+	unsigned int xdp_bytes_compl = 0;
+	unsigned int xdp_pkts_compl = 0;
 	unsigned int efv_pkts_compl = 0;
 	struct efx_tx_buffer *buffer;
 	unsigned int bytes_compl = 0;
@@ -303,7 +318,8 @@  void efx_enqueue_unwind(struct efx_tx_queue *tx_queue,
 		--tx_queue->insert_count;
 		buffer = __efx_tx_queue_get_insert_buffer(tx_queue);
 		efx_dequeue_buffer(tx_queue, buffer, &pkts_compl, &bytes_compl,
-				   &efv_pkts_compl);
+				   &efv_pkts_compl, &xdp_pkts_compl,
+				   &xdp_bytes_compl);
 	}
 }
 
diff --git a/drivers/net/ethernet/sfc/tx_common.h b/drivers/net/ethernet/sfc/tx_common.h
index 1e9f42938aac..039eefafba23 100644
--- a/drivers/net/ethernet/sfc/tx_common.h
+++ b/drivers/net/ethernet/sfc/tx_common.h
@@ -20,7 +20,9 @@  void efx_dequeue_buffer(struct efx_tx_queue *tx_queue,
 			struct efx_tx_buffer *buffer,
 			unsigned int *pkts_compl,
 			unsigned int *bytes_compl,
-			unsigned int *efv_pkts_compl);
+			unsigned int *efv_pkts_compl,
+			unsigned int *xdp_pkts,
+			unsigned int *xdp_bytes);
 
 static inline bool efx_tx_buffer_in_use(struct efx_tx_buffer *buffer)
 {