From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 58F22C433EF for ; Sun, 20 Mar 2022 06:58:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244893AbiCTG7v (ORCPT ); Sun, 20 Mar 2022 02:59:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44058 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233808AbiCTG7m (ORCPT ); Sun, 20 Mar 2022 02:59:42 -0400 Received: from mail-pg1-x532.google.com (mail-pg1-x532.google.com [IPv6:2607:f8b0:4864:20::532]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3EBF922535 for ; Sat, 19 Mar 2022 23:58:19 -0700 (PDT) Received: by mail-pg1-x532.google.com with SMTP id w21so4442462pgm.7 for ; Sat, 19 Mar 2022 23:58:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=9+YwUw+mAwyVZ8b+qCEe5xTkb2ehUi1+PH7Ye4oOxaQ=; b=JK0iUGz4VO6C8fuuCZjlT5ROhnh8f39V2nueeFQi2OftepruLc2Srfzyifdy65ijMi NN0YoBOAsGBV2YRj5MBR6RHuQn58zlMriQ4CuvicgZDHcJ+g7oCGcM2a68uI3+e7XTgm lal3j7zvCkJbjN/m+lTBabBLrMShKQyD39cLs= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=9+YwUw+mAwyVZ8b+qCEe5xTkb2ehUi1+PH7Ye4oOxaQ=; b=N8iSneVr7L2BKtsJaG1xp1smL8HqcCfZi8Sze4lcDIuHv/dBjLsDD0I8AEDYG9/OuV O8VDSqXp8J/4cbotlK2hwLd+CYL5qBBffRM/E2iNRnPm04oMl/O0GxJVdf0xiRZpQEsD WHWa4plBHwXWTlGONgqllevH/JWRewimoejJNlOxmO91jztYkxBp/vfGmJ0hKx0x8jqP D3qN3Ld5QoBjlpnrWNRgykMLjGtxE7YmKg4nz157sjk2+x7GtO5KOfYnSQf3oyjhcYfm eyuq2TPFTvYkJI7Xer/lfK3wubz36iA4dVWQyN2OTjXRav98/lvk646XocYMwHnqY4n4 P/vA== X-Gm-Message-State: AOAM532m2cdorORsMBgKIrfJJcxCW4rNtLZsZb22OvxkIGuhzvbGvl/m spFAv+Ze9d4A3cpB/E4cBTAmqA== X-Google-Smtp-Source: ABdhPJwUcevHV9mZRam+bi2d4xbI/QzQVlmmzXOMchjBTDH40s9ekzTHABQ4syAAMX2IHnVAEhraww== X-Received: by 2002:a05:6a00:238f:b0:4f6:b09a:4c63 with SMTP id f15-20020a056a00238f00b004f6b09a4c63mr17745426pfc.35.1647759497809; Sat, 19 Mar 2022 23:58:17 -0700 (PDT) Received: from localhost.swdvt.lab.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id q4-20020a056a00150400b004f78d4821a0sm15359334pfu.204.2022.03.19.23.58.16 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sat, 19 Mar 2022 23:58:17 -0700 (PDT) From: Michael Chan To: davem@davemloft.net Cc: netdev@vger.kernel.org, kuba@kernel.org, gospo@broadcom.com Subject: [PATCH net-next 01/11] bnxt: refactor bnxt_rx_xdp to separate xdp_init_buff/xdp_prepare_buff Date: Sun, 20 Mar 2022 02:57:43 -0400 Message-Id: <1647759473-2414-2-git-send-email-michael.chan@broadcom.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1647759473-2414-1-git-send-email-michael.chan@broadcom.com> References: <1647759473-2414-1-git-send-email-michael.chan@broadcom.com> Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="0000000000009d497005daa0e77d" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org --0000000000009d497005daa0e77d From: Andy Gospodarek Move initialization of xdp_buff outside of bnxt_rx_xdp to prepare for allowing bnxt_rx_xdp to operate on multibuffer xdp_buffs. Signed-off-by: Andy Gospodarek Signed-off-by: Michael Chan --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 11 +++-- drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 44 ++++++++++++++----- drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h | 7 ++- 3 files changed, 46 insertions(+), 16 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 92a1a43b3bee..21d5c76b1e70 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -1731,6 +1731,7 @@ static int bnxt_rx_pkt(struct bnxt *bp, struct bnxt_cp_ring_info *cpr, u8 *data_ptr, agg_bufs, cmp_type; dma_addr_t dma_addr; struct sk_buff *skb; + struct xdp_buff xdp; u32 flags, misc; void *data; int rc = 0; @@ -1839,11 +1840,13 @@ static int bnxt_rx_pkt(struct bnxt *bp, struct bnxt_cp_ring_info *cpr, len = flags >> RX_CMP_LEN_SHIFT; dma_addr = rx_buf->mapping; - if (bnxt_rx_xdp(bp, rxr, cons, data, &data_ptr, &len, event)) { - rc = 1; - goto next_rx; + if (bnxt_xdp_attached(bp, rxr)) { + bnxt_xdp_buff_init(bp, rxr, cons, &data_ptr, &len, &xdp); + if (bnxt_rx_xdp(bp, rxr, cons, xdp, data, &len, event)) { + rc = 1; + goto next_rx; + } } - if (len <= bp->rx_copy_thresh) { skb = bnxt_copy_skb(bnapi, data_ptr, len, dma_addr); bnxt_reuse_rx_data(rxr, cons, data); diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c index 52fad0fdeacf..5073f97722f1 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c @@ -104,18 +104,44 @@ void bnxt_tx_int_xdp(struct bnxt *bp, struct bnxt_napi *bnapi, int nr_pkts) } } +bool bnxt_xdp_attached(struct bnxt *bp, struct bnxt_rx_ring_info *rxr) +{ + struct bpf_prog *xdp_prog = READ_ONCE(rxr->xdp_prog); + + return !!xdp_prog; +} + +void bnxt_xdp_buff_init(struct bnxt *bp, struct bnxt_rx_ring_info *rxr, + u16 cons, u8 **data_ptr, unsigned int *len, + struct xdp_buff *xdp) +{ + struct bnxt_sw_rx_bd *rx_buf; + struct pci_dev *pdev; + dma_addr_t mapping; + u32 offset; + + pdev = bp->pdev; + rx_buf = &rxr->rx_buf_ring[cons]; + offset = bp->rx_offset; + + mapping = rx_buf->mapping - bp->rx_dma_offset; + dma_sync_single_for_cpu(&pdev->dev, mapping + offset, *len, bp->rx_dir); + + xdp_init_buff(xdp, PAGE_SIZE, &rxr->xdp_rxq); + xdp_prepare_buff(xdp, *data_ptr - offset, offset, *len, false); +} + /* returns the following: * true - packet consumed by XDP and new buffer is allocated. * false - packet should be passed to the stack. */ bool bnxt_rx_xdp(struct bnxt *bp, struct bnxt_rx_ring_info *rxr, u16 cons, - struct page *page, u8 **data_ptr, unsigned int *len, u8 *event) + struct xdp_buff xdp, struct page *page, unsigned int *len, u8 *event) { struct bpf_prog *xdp_prog = READ_ONCE(rxr->xdp_prog); struct bnxt_tx_ring_info *txr; struct bnxt_sw_rx_bd *rx_buf; struct pci_dev *pdev; - struct xdp_buff xdp; dma_addr_t mapping; void *orig_data; u32 tx_avail; @@ -126,16 +152,10 @@ bool bnxt_rx_xdp(struct bnxt *bp, struct bnxt_rx_ring_info *rxr, u16 cons, return false; pdev = bp->pdev; - rx_buf = &rxr->rx_buf_ring[cons]; offset = bp->rx_offset; - mapping = rx_buf->mapping - bp->rx_dma_offset; - dma_sync_single_for_cpu(&pdev->dev, mapping + offset, *len, bp->rx_dir); - txr = rxr->bnapi->tx_ring; /* BNXT_RX_PAGE_MODE(bp) when XDP enabled */ - xdp_init_buff(&xdp, PAGE_SIZE, &rxr->xdp_rxq); - xdp_prepare_buff(&xdp, *data_ptr - offset, offset, *len, false); orig_data = xdp.data; act = bpf_prog_run_xdp(xdp_prog, &xdp); @@ -148,15 +168,17 @@ bool bnxt_rx_xdp(struct bnxt *bp, struct bnxt_rx_ring_info *rxr, u16 cons, *event &= ~BNXT_RX_EVENT; *len = xdp.data_end - xdp.data; - if (orig_data != xdp.data) { + if (orig_data != xdp.data) offset = xdp.data - xdp.data_hard_start; - *data_ptr = xdp.data_hard_start + offset; - } + switch (act) { case XDP_PASS: return false; case XDP_TX: + rx_buf = &rxr->rx_buf_ring[cons]; + mapping = rx_buf->mapping - bp->rx_dma_offset; + if (tx_avail < 1) { trace_xdp_exception(bp->dev, xdp_prog, act); bnxt_reuse_rx_data(rxr, cons, page); diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h index 0df40c3beb05..39690bdb5526 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h @@ -15,10 +15,15 @@ struct bnxt_sw_tx_bd *bnxt_xmit_bd(struct bnxt *bp, dma_addr_t mapping, u32 len); void bnxt_tx_int_xdp(struct bnxt *bp, struct bnxt_napi *bnapi, int nr_pkts); bool bnxt_rx_xdp(struct bnxt *bp, struct bnxt_rx_ring_info *rxr, u16 cons, - struct page *page, u8 **data_ptr, unsigned int *len, + struct xdp_buff xdp, struct page *page, unsigned int *len, u8 *event); int bnxt_xdp(struct net_device *dev, struct netdev_bpf *xdp); int bnxt_xdp_xmit(struct net_device *dev, int num_frames, struct xdp_frame **frames, u32 flags); +bool bnxt_xdp_attached(struct bnxt *bp, struct bnxt_rx_ring_info *rxr); + +void bnxt_xdp_buff_init(struct bnxt *bp, struct bnxt_rx_ring_info *rxr, + u16 cons, u8 **data_ptr, unsigned int *len, + struct xdp_buff *xdp); #endif -- 2.18.1 --0000000000009d497005daa0e77d Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIIQbQYJKoZIhvcNAQcCoIIQXjCCEFoCAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg gg3EMIIFDTCCA/WgAwIBAgIQeEqpED+lv77edQixNJMdADANBgkqhkiG9w0BAQsFADBMMSAwHgYD VQQLExdHbG9iYWxTaWduIFJvb3QgQ0EgLSBSMzETMBEGA1UEChMKR2xvYmFsU2lnbjETMBEGA1UE AxMKR2xvYmFsU2lnbjAeFw0yMDA5MTYwMDAwMDBaFw0yODA5MTYwMDAwMDBaMFsxCzAJBgNVBAYT AkJFMRkwFwYDVQQKExBHbG9iYWxTaWduIG52LXNhMTEwLwYDVQQDEyhHbG9iYWxTaWduIEdDQyBS MyBQZXJzb25hbFNpZ24gMiBDQSAyMDIwMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA vbCmXCcsbZ/a0fRIQMBxp4gJnnyeneFYpEtNydrZZ+GeKSMdHiDgXD1UnRSIudKo+moQ6YlCOu4t rVWO/EiXfYnK7zeop26ry1RpKtogB7/O115zultAz64ydQYLe+a1e/czkALg3sgTcOOcFZTXk38e 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