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X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA2PR11MB4796 X-OriginatorOrg: intel.com Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On 10/5/2022 4:21 PM, Joe Damato wrote: > Update i40e_clean_tx_irq to take an out parameter (tx_cleaned) which stores > the number TXs cleaned. > > Likewise, update i40e_clean_xdp_tx_irq and i40e_xmit_zc to do the same. > > Care has been taken to avoid changing the control flow of any functions > involved. > > Signed-off-by: Joe Damato > --- > drivers/net/ethernet/intel/i40e/i40e_txrx.c | 16 +++++++++++----- > drivers/net/ethernet/intel/i40e/i40e_xsk.c | 15 +++++++++++---- > drivers/net/ethernet/intel/i40e/i40e_xsk.h | 3 ++- > 3 files changed, 24 insertions(+), 10 deletions(-) > > diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c > index b97c95f..a2cc98e 100644 > --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c > +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c > @@ -923,11 +923,13 @@ void i40e_detect_recover_hung(struct i40e_vsi *vsi) > * @vsi: the VSI we care about > * @tx_ring: Tx ring to clean > * @napi_budget: Used to determine if we are in netpoll > + * @tx_cleaned: Out parameter set to the number of TXes cleaned > * > * Returns true if there's any budget left (e.g. the clean is finished) > **/ > static bool i40e_clean_tx_irq(struct i40e_vsi *vsi, > - struct i40e_ring *tx_ring, int napi_budget) > + struct i40e_ring *tx_ring, int napi_budget, > + unsigned int *tx_cleaned) > { > int i = tx_ring->next_to_clean; > struct i40e_tx_buffer *tx_buf; > @@ -1026,7 +1028,7 @@ static bool i40e_clean_tx_irq(struct i40e_vsi *vsi, > i40e_arm_wb(tx_ring, vsi, budget); > > if (ring_is_xdp(tx_ring)) > - return !!budget; > + goto out; > > /* notify netdev of completed buffers */ > netdev_tx_completed_queue(txring_txq(tx_ring), > @@ -1048,6 +1050,8 @@ static bool i40e_clean_tx_irq(struct i40e_vsi *vsi, > } > } > > +out: > + *tx_cleaned = total_packets; > return !!budget; > } > > @@ -2689,10 +2693,12 @@ int i40e_napi_poll(struct napi_struct *napi, int budget) > container_of(napi, struct i40e_q_vector, napi); > struct i40e_vsi *vsi = q_vector->vsi; > struct i40e_ring *ring; > + bool tx_clean_complete = true; > bool clean_complete = true; > bool arm_wb = false; > int budget_per_ring; > int work_done = 0; > + unsigned int tx_cleaned = 0; > > if (test_bit(__I40E_VSI_DOWN, vsi->state)) { > napi_complete(napi); > @@ -2704,11 +2710,11 @@ int i40e_napi_poll(struct napi_struct *napi, int budget) > */ > i40e_for_each_ring(ring, q_vector->tx) { > bool wd = ring->xsk_pool ? > - i40e_clean_xdp_tx_irq(vsi, ring) : > - i40e_clean_tx_irq(vsi, ring, budget); > + i40e_clean_xdp_tx_irq(vsi, ring, &tx_cleaned) : > + i40e_clean_tx_irq(vsi, ring, budget, &tx_cleaned); > > if (!wd) { > - clean_complete = false; > + clean_complete = tx_clean_complete = false; > continue; > } > arm_wb |= ring->arm_wb; > diff --git a/drivers/net/ethernet/intel/i40e/i40e_xsk.c b/drivers/net/ethernet/intel/i40e/i40e_xsk.c > index 790aaeff..f98ce7e4 100644 > --- a/drivers/net/ethernet/intel/i40e/i40e_xsk.c > +++ b/drivers/net/ethernet/intel/i40e/i40e_xsk.c > @@ -530,18 +530,22 @@ static void i40e_set_rs_bit(struct i40e_ring *xdp_ring) > * i40e_xmit_zc - Performs zero-copy Tx AF_XDP > * @xdp_ring: XDP Tx ring > * @budget: NAPI budget > + * @tx_cleaned: Out parameter of the TX packets processed > * > * Returns true if the work is finished. > **/ > -static bool i40e_xmit_zc(struct i40e_ring *xdp_ring, unsigned int budget) > +static bool i40e_xmit_zc(struct i40e_ring *xdp_ring, unsigned int budget, > + unsigned int *tx_cleaned) > { > struct xdp_desc *descs = xdp_ring->xsk_pool->tx_descs; > u32 nb_pkts, nb_processed = 0; > unsigned int total_bytes = 0; > > nb_pkts = xsk_tx_peek_release_desc_batch(xdp_ring->xsk_pool, budget); > - if (!nb_pkts) > + if (!nb_pkts) { > + *tx_cleaned = 0; > return true; > + } > > if (xdp_ring->next_to_use + nb_pkts >= xdp_ring->count) { > nb_processed = xdp_ring->count - xdp_ring->next_to_use; > @@ -558,6 +562,7 @@ static bool i40e_xmit_zc(struct i40e_ring *xdp_ring, unsigned int budget) > > i40e_update_tx_stats(xdp_ring, nb_pkts, total_bytes); > > + *tx_cleaned = nb_pkts; With XDP, I don't think we should count these as tx_cleaned packets. These are transmitted packets. The tx_cleaned would be the xsk_frames counter in i40e_clean_xdp_tx_irq May be we need 2 counters for xdp. > return nb_pkts < budget; > } > > @@ -581,10 +586,12 @@ static void i40e_clean_xdp_tx_buffer(struct i40e_ring *tx_ring, > * i40e_clean_xdp_tx_irq - Completes AF_XDP entries, and cleans XDP entries > * @vsi: Current VSI > * @tx_ring: XDP Tx ring > + * @tx_cleaned: out parameter of number of TXes cleaned > * > * Returns true if cleanup/tranmission is done. > **/ > -bool i40e_clean_xdp_tx_irq(struct i40e_vsi *vsi, struct i40e_ring *tx_ring) > +bool i40e_clean_xdp_tx_irq(struct i40e_vsi *vsi, struct i40e_ring *tx_ring, > + unsigned int *tx_cleaned) > { > struct xsk_buff_pool *bp = tx_ring->xsk_pool; > u32 i, completed_frames, xsk_frames = 0; > @@ -634,7 +641,7 @@ bool i40e_clean_xdp_tx_irq(struct i40e_vsi *vsi, struct i40e_ring *tx_ring) > if (xsk_uses_need_wakeup(tx_ring->xsk_pool)) > xsk_set_tx_need_wakeup(tx_ring->xsk_pool); > > - return i40e_xmit_zc(tx_ring, I40E_DESC_UNUSED(tx_ring)); > + return i40e_xmit_zc(tx_ring, I40E_DESC_UNUSED(tx_ring), tx_cleaned); > } > > /** > diff --git a/drivers/net/ethernet/intel/i40e/i40e_xsk.h b/drivers/net/ethernet/intel/i40e/i40e_xsk.h > index 821df24..396ed11 100644 > --- a/drivers/net/ethernet/intel/i40e/i40e_xsk.h > +++ b/drivers/net/ethernet/intel/i40e/i40e_xsk.h > @@ -30,7 +30,8 @@ int i40e_xsk_pool_setup(struct i40e_vsi *vsi, struct xsk_buff_pool *pool, > 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); > > -bool i40e_clean_xdp_tx_irq(struct i40e_vsi *vsi, struct i40e_ring *tx_ring); > +bool i40e_clean_xdp_tx_irq(struct i40e_vsi *vsi, struct i40e_ring *tx_ring, > + unsigned int *tx_cleaned); > int i40e_xsk_wakeup(struct net_device *dev, u32 queue_id, u32 flags); > int i40e_realloc_rx_bi_zc(struct i40e_vsi *vsi, bool zc); > void i40e_clear_rx_bi_zc(struct i40e_ring *rx_ring);