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Subject: Re: [Intel-wired-lan] [PATCH iwl-next v8 4/6] igb: Add XDP finalize and stats update functions X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jesper Dangaard Brouer , Daniel Borkmann , Przemek Kitszel , Richard Cochran , John Fastabend , Alexei Starovoitov , Sriram Yagnaraman , Benjamin Steinke , Eric Dumazet , netdev@vger.kernel.org, Tony Nguyen , intel-wired-lan@lists.osuosl.org, Jakub Kicinski , bpf@vger.kernel.org, Paolo Abeni , "David S. Miller" , Sebastian Andrzej Siewior Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" On Fri, Oct 11, 2024 at 11:01:02AM +0200, Kurt Kanzenbach wrote: > Move XDP finalize and Rx statistics update into separate functions. This > way, they can be reused by the XDP and XDP/ZC code later. > > Signed-off-by: Kurt Kanzenbach Acked-by: Maciej Fijalkowski > --- > drivers/net/ethernet/intel/igb/igb.h | 3 ++ > drivers/net/ethernet/intel/igb/igb_main.c | 54 ++++++++++++++++++++----------- > 2 files changed, 38 insertions(+), 19 deletions(-) > > diff --git a/drivers/net/ethernet/intel/igb/igb.h b/drivers/net/ethernet/intel/igb/igb.h > index c30d6f9708f8..1e65b41a48d8 100644 > --- a/drivers/net/ethernet/intel/igb/igb.h > +++ b/drivers/net/ethernet/intel/igb/igb.h > @@ -740,6 +740,9 @@ void igb_clean_tx_ring(struct igb_ring *tx_ring); > void igb_clean_rx_ring(struct igb_ring *rx_ring); > void igb_configure_tx_ring(struct igb_adapter *, struct igb_ring *); > void igb_configure_rx_ring(struct igb_adapter *, struct igb_ring *); > +void igb_finalize_xdp(struct igb_adapter *adapter, unsigned int status); > +void igb_update_rx_stats(struct igb_q_vector *q_vector, unsigned int packets, > + unsigned int bytes); > void igb_setup_tctl(struct igb_adapter *); > void igb_setup_rctl(struct igb_adapter *); > void igb_setup_srrctl(struct igb_adapter *, struct igb_ring *); > diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c > index 341b83e39019..4d3aed6cd848 100644 > --- a/drivers/net/ethernet/intel/igb/igb_main.c > +++ b/drivers/net/ethernet/intel/igb/igb_main.c > @@ -8852,6 +8852,38 @@ static void igb_put_rx_buffer(struct igb_ring *rx_ring, > rx_buffer->page = NULL; > } > > +void igb_finalize_xdp(struct igb_adapter *adapter, unsigned int status) > +{ > + int cpu = smp_processor_id(); > + struct netdev_queue *nq; > + > + if (status & IGB_XDP_REDIR) > + xdp_do_flush(); > + > + if (status & IGB_XDP_TX) { > + struct igb_ring *tx_ring = igb_xdp_tx_queue_mapping(adapter); > + > + nq = txring_txq(tx_ring); > + __netif_tx_lock(nq, cpu); > + igb_xdp_ring_update_tail(tx_ring); > + __netif_tx_unlock(nq); > + } > +} > + > +void igb_update_rx_stats(struct igb_q_vector *q_vector, unsigned int packets, > + unsigned int bytes) > +{ > + struct igb_ring *ring = q_vector->rx.ring; > + > + u64_stats_update_begin(&ring->rx_syncp); > + ring->rx_stats.packets += packets; > + ring->rx_stats.bytes += bytes; > + u64_stats_update_end(&ring->rx_syncp); > + > + q_vector->rx.total_packets += packets; > + q_vector->rx.total_bytes += bytes; > +} > + > static int igb_clean_rx_irq(struct igb_q_vector *q_vector, const int budget) > { > unsigned int total_bytes = 0, total_packets = 0; > @@ -8859,9 +8891,7 @@ static int igb_clean_rx_irq(struct igb_q_vector *q_vector, const int budget) > struct igb_ring *rx_ring = q_vector->rx.ring; > u16 cleaned_count = igb_desc_unused(rx_ring); > struct sk_buff *skb = rx_ring->skb; > - int cpu = smp_processor_id(); > unsigned int xdp_xmit = 0; > - struct netdev_queue *nq; > struct xdp_buff xdp; > u32 frame_sz = 0; > int rx_buf_pgcnt; > @@ -8983,24 +9013,10 @@ static int igb_clean_rx_irq(struct igb_q_vector *q_vector, const int budget) > /* place incomplete frames back on ring for completion */ > rx_ring->skb = skb; > > - if (xdp_xmit & IGB_XDP_REDIR) > - xdp_do_flush(); > - > - if (xdp_xmit & IGB_XDP_TX) { > - struct igb_ring *tx_ring = igb_xdp_tx_queue_mapping(adapter); > - > - nq = txring_txq(tx_ring); > - __netif_tx_lock(nq, cpu); > - igb_xdp_ring_update_tail(tx_ring); > - __netif_tx_unlock(nq); > - } > + if (xdp_xmit) > + igb_finalize_xdp(adapter, xdp_xmit); > > - u64_stats_update_begin(&rx_ring->rx_syncp); > - rx_ring->rx_stats.packets += total_packets; > - rx_ring->rx_stats.bytes += total_bytes; > - u64_stats_update_end(&rx_ring->rx_syncp); > - q_vector->rx.total_packets += total_packets; > - q_vector->rx.total_bytes += total_bytes; > + igb_update_rx_stats(q_vector, total_packets, total_bytes); > > if (cleaned_count) > igb_alloc_rx_buffers(rx_ring, cleaned_count); > > -- > 2.39.5 >