From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 305C81BEED for ; Thu, 17 Aug 2023 23:19:32 +0000 (UTC) Received: from mail-qv1-xf31.google.com (mail-qv1-xf31.google.com [IPv6:2607:f8b0:4864:20::f31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5CA7E35AB for ; Thu, 17 Aug 2023 16:19:31 -0700 (PDT) Received: by mail-qv1-xf31.google.com with SMTP id 6a1803df08f44-6471744acb6so1378536d6.1 for ; Thu, 17 Aug 2023 16:19:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1692314370; x=1692919170; h=mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:from:to:cc:subject:date:message-id:reply-to; bh=6UM56ydzu4TfXzkslBZgulgI4H2pjWf6VZCweuk0YZk=; b=GnAWeH9g1V+7B8MmUhFDFUTlqVH3IAh0/Nbu5C/t7q2lWMiI/Q0uVtaUqYhbvCm6qU Nj6gg2uxAUgPP1AgBCrVaO0JwQbMxqgypt642gv+KJDP498TqzL4aw8N8t005UugW3xf NOMWpKwa6olZhB6clslL70ZtrheUUqVjsBZ98= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1692314370; x=1692919170; h=mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=6UM56ydzu4TfXzkslBZgulgI4H2pjWf6VZCweuk0YZk=; b=UxMliYJI2sYG/vsbuiJGJ1JQ7/Xs0Ouq3JyT4quhnUDOkmrUitVt5VHkM+fhZUtyvP +bR4hc6CPGx4oUgGwI68BiZQoex4CCWek2FpSwc7QvDBnLEjnEkDTUH5ViPWKlR7AwcX 3mY/vsjyzXmyEcWJC6FmgcyvLJPnEk5eXC8d/5HvPdLmO8Jw6saRPjE6mRokquFcoRuT hHIg47Qv9qZlbIUlcUPsqcNX6XhsLPiEotmcbjqRJ8j9gWkXc4TmKwmt+mxJGtAFEl+5 0HwwjkNcwu6VzTmPmvJvz0SVK9hKOt/y3aKyz4Lu5EGvQZA5mH1XmYObiKBEv3UlV9PL Z02g== X-Gm-Message-State: AOJu0YxwVovpIQOt3LRdeOFd4QLvPZUJbuACQrKE0SgsvWkeEyt2cJMM OEcuone0O3cF1+3IqUgI8Tt/dg== X-Google-Smtp-Source: AGHT+IGJ2CkOYVXn7l+Ev1IgGxDAZ0RGjA9TjpL3LvZoPCOmHifCz/snjpn4AgxwejGTwKJRG75J3g== X-Received: by 2002:a0c:b25e:0:b0:63f:90b8:6a30 with SMTP id k30-20020a0cb25e000000b0063f90b86a30mr1163395qve.26.1692314370271; Thu, 17 Aug 2023 16:19:30 -0700 (PDT) Received: from lvnvda5233.lvn.broadcom.net ([192.19.161.250]) by smtp.gmail.com with ESMTPSA id w27-20020a05620a149b00b0076d25b11b62sm145516qkj.38.2023.08.17.16.19.28 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 17 Aug 2023 16:19:29 -0700 (PDT) From: Michael Chan To: davem@davemloft.net Cc: netdev@vger.kernel.org, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, gospo@broadcom.com, Somnath Kotur , bpf@vger.kernel.org Subject: [PATCH net-next v2 1/6] bnxt_en: Use the unified RX page pool buffers for XDP and non-XDP Date: Thu, 17 Aug 2023 16:19:06 -0700 Message-Id: <20230817231911.165035-2-michael.chan@broadcom.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20230817231911.165035-1-michael.chan@broadcom.com> References: <20230817231911.165035-1-michael.chan@broadcom.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="000000000000ea8efa060326a4f5" X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net --000000000000ea8efa060326a4f5 Content-Transfer-Encoding: 8bit From: Somnath Kotur Convert to use the page pool buffers for the aggregation ring when running in non-XDP mode. This simplifies the driver and we benefit from the recycling of pages. Adjust the page pool size to account for the aggregation ring size. Cc: bpf@vger.kernel.org Signed-off-by: Somnath Kotur Signed-off-by: Michael Chan --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 71 +++++------------------ drivers/net/ethernet/broadcom/bnxt/bnxt.h | 3 - 2 files changed, 14 insertions(+), 60 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 7be917a8da48..6b815a2288e2 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -877,48 +877,15 @@ static inline int bnxt_alloc_rx_page(struct bnxt *bp, struct rx_bd *rxbd = &rxr->rx_agg_desc_ring[RX_RING(prod)][RX_IDX(prod)]; struct bnxt_sw_rx_agg_bd *rx_agg_buf; - struct pci_dev *pdev = bp->pdev; struct page *page; dma_addr_t mapping; u16 sw_prod = rxr->rx_sw_agg_prod; unsigned int offset = 0; - if (BNXT_RX_PAGE_MODE(bp)) { - page = __bnxt_alloc_rx_page(bp, &mapping, rxr, &offset, gfp); - - if (!page) - return -ENOMEM; - - } else { - if (PAGE_SIZE > BNXT_RX_PAGE_SIZE) { - page = rxr->rx_page; - if (!page) { - page = alloc_page(gfp); - if (!page) - return -ENOMEM; - rxr->rx_page = page; - rxr->rx_page_offset = 0; - } - offset = rxr->rx_page_offset; - rxr->rx_page_offset += BNXT_RX_PAGE_SIZE; - if (rxr->rx_page_offset == PAGE_SIZE) - rxr->rx_page = NULL; - else - get_page(page); - } else { - page = alloc_page(gfp); - if (!page) - return -ENOMEM; - } + page = __bnxt_alloc_rx_page(bp, &mapping, rxr, &offset, gfp); - mapping = dma_map_page_attrs(&pdev->dev, page, offset, - BNXT_RX_PAGE_SIZE, DMA_FROM_DEVICE, - DMA_ATTR_WEAK_ORDERING); - if (dma_mapping_error(&pdev->dev, mapping)) { - __free_page(page); - return -EIO; - } - } + if (!page) + return -ENOMEM; if (unlikely(test_bit(sw_prod, rxr->rx_agg_bmap))) sw_prod = bnxt_find_next_agg_idx(rxr, sw_prod); @@ -1204,6 +1171,7 @@ static struct sk_buff *bnxt_rx_agg_pages_skb(struct bnxt *bp, total_frag_len = __bnxt_rx_agg_pages(bp, cpr, shinfo, idx, agg_bufs, tpa, NULL); if (!total_frag_len) { + skb_mark_for_recycle(skb); dev_kfree_skb(skb); return NULL; } @@ -1794,6 +1762,7 @@ static void bnxt_deliver_skb(struct bnxt *bp, struct bnxt_napi *bnapi, return; } skb_record_rx_queue(skb, bnapi->index); + skb_mark_for_recycle(skb); napi_gro_receive(&bnapi->napi, skb); } @@ -3002,30 +2971,16 @@ static void bnxt_free_one_rx_ring_skbs(struct bnxt *bp, int ring_nr) if (!page) continue; - if (BNXT_RX_PAGE_MODE(bp)) { - dma_unmap_page_attrs(&pdev->dev, rx_agg_buf->mapping, - BNXT_RX_PAGE_SIZE, bp->rx_dir, - DMA_ATTR_WEAK_ORDERING); - rx_agg_buf->page = NULL; - __clear_bit(i, rxr->rx_agg_bmap); - - page_pool_recycle_direct(rxr->page_pool, page); - } else { - dma_unmap_page_attrs(&pdev->dev, rx_agg_buf->mapping, - BNXT_RX_PAGE_SIZE, DMA_FROM_DEVICE, - DMA_ATTR_WEAK_ORDERING); - rx_agg_buf->page = NULL; - __clear_bit(i, rxr->rx_agg_bmap); + dma_unmap_page_attrs(&pdev->dev, rx_agg_buf->mapping, + BNXT_RX_PAGE_SIZE, bp->rx_dir, + DMA_ATTR_WEAK_ORDERING); + rx_agg_buf->page = NULL; + __clear_bit(i, rxr->rx_agg_bmap); - __free_page(page); - } + page_pool_recycle_direct(rxr->page_pool, page); } skip_rx_agg_free: - if (rxr->rx_page) { - __free_page(rxr->rx_page); - rxr->rx_page = NULL; - } map = rxr->rx_tpa_idx_map; if (map) memset(map->agg_idx_bmap, 0, sizeof(map->agg_idx_bmap)); @@ -3244,7 +3199,9 @@ static int bnxt_alloc_rx_page_pool(struct bnxt *bp, { struct page_pool_params pp = { 0 }; - pp.pool_size = bp->rx_ring_size; + pp.pool_size = bp->rx_agg_ring_size; + if (BNXT_RX_PAGE_MODE(bp)) + pp.pool_size += bp->rx_ring_size; pp.nid = dev_to_node(&bp->pdev->dev); pp.napi = &rxr->bnapi->napi; pp.dev = &bp->pdev->dev; diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index 362918876d3c..d6a1eaa69774 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -919,9 +919,6 @@ struct bnxt_rx_ring_info { unsigned long *rx_agg_bmap; u16 rx_agg_bmap_size; - struct page *rx_page; - unsigned int rx_page_offset; - 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