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[73.223.190.181]) by smtp.gmail.com with ESMTPSA id q12-20020a170902dacc00b0017f7b6e970esm2404666plx.146.2022.10.05.14.22.54 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 05 Oct 2022 14:22:55 -0700 (PDT) From: Joe Damato To: intel-wired-lan@lists.osuosl.org Cc: netdev@vger.kernel.org, kuba@kernel.org, davem@davemloft.net, anthony.l.nguyen@intel.com, jesse.brandeburg@intel.com, maciej.fijalkowski@intel.com, Joe Damato Subject: [next-queue v2 3/4] i40e: Record number of RXes cleaned during NAPI Date: Wed, 5 Oct 2022 14:21:52 -0700 Message-Id: <1665004913-25656-4-git-send-email-jdamato@fastly.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1665004913-25656-1-git-send-email-jdamato@fastly.com> References: <1665004913-25656-1-git-send-email-jdamato@fastly.com> Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Adjust i40e_clean_rx_irq and i40e_clean_rx_irq_zc to accept an out parameter which records the number of RX packets cleaned. Care has been taken to avoid any changes in control flow. Signed-off-by: Joe Damato --- drivers/net/ethernet/intel/i40e/i40e_txrx.c | 11 ++++++++--- drivers/net/ethernet/intel/i40e/i40e_xsk.c | 6 +++++- drivers/net/ethernet/intel/i40e/i40e_xsk.h | 3 ++- 3 files changed, 15 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c index a2cc98e..8a0d4fd 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c @@ -2426,6 +2426,7 @@ 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 @@ -2434,7 +2435,8 @@ 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); @@ -2571,6 +2573,8 @@ 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; } @@ -2699,6 +2703,7 @@ int i40e_napi_poll(struct napi_struct *napi, int budget) 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); @@ -2738,8 +2743,8 @@ 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_zc(ring, budget_per_ring, &rx_cleaned) : + 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 */ diff --git a/drivers/net/ethernet/intel/i40e/i40e_xsk.c b/drivers/net/ethernet/intel/i40e/i40e_xsk.c index f98ce7e4..b1f582a0 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_xsk.c +++ b/drivers/net/ethernet/intel/i40e/i40e_xsk.c @@ -378,10 +378,12 @@ static void i40e_handle_xdp_result_zc(struct i40e_ring *rx_ring, * i40e_clean_rx_irq_zc - Consumes Rx packets from the hardware ring * @rx_ring: Rx ring * @budget: NAPI budget + * @rx_cleaned: out parameter of the packets processed * * Returns amount of work completed **/ -int i40e_clean_rx_irq_zc(struct i40e_ring *rx_ring, int budget) +int i40e_clean_rx_irq_zc(struct i40e_ring *rx_ring, int budget, + unsigned int *rx_cleaned) { unsigned int total_rx_bytes = 0, total_rx_packets = 0; u16 next_to_clean = rx_ring->next_to_clean; @@ -452,6 +454,8 @@ int i40e_clean_rx_irq_zc(struct i40e_ring *rx_ring, int budget) i40e_finalize_xdp_rx(rx_ring, xdp_xmit); i40e_update_rx_stats(rx_ring, total_rx_bytes, total_rx_packets); + *rx_cleaned = total_rx_packets; + if (xsk_uses_need_wakeup(rx_ring->xsk_pool)) { if (failure || next_to_clean == rx_ring->next_to_use) xsk_set_rx_need_wakeup(rx_ring->xsk_pool); diff --git a/drivers/net/ethernet/intel/i40e/i40e_xsk.h b/drivers/net/ethernet/intel/i40e/i40e_xsk.h index 396ed11..1089cc0 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_xsk.h +++ b/drivers/net/ethernet/intel/i40e/i40e_xsk.h @@ -28,7 +28,8 @@ int i40e_queue_pair_enable(struct i40e_vsi *vsi, int queue_pair); int i40e_xsk_pool_setup(struct i40e_vsi *vsi, struct xsk_buff_pool *pool, u16 qid); bool i40e_alloc_rx_buffers_zc(struct i40e_ring *rx_ring, u16 cleaned_count); -int i40e_clean_rx_irq_zc(struct i40e_ring *rx_ring, int budget); +int i40e_clean_rx_irq_zc(struct i40e_ring *rx_ring, int budget, + unsigned int *rx_cleaned); bool i40e_clean_xdp_tx_irq(struct i40e_vsi *vsi, struct i40e_ring *tx_ring, unsigned int *tx_cleaned);