From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f53.google.com (mail-wr1-f53.google.com [209.85.221.53]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1E00F31A561 for ; Thu, 27 Nov 2025 20:44:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.53 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764276280; cv=none; b=doG8Vg7hivHr8lMKNRm/X/u8drf2QblK+NdHOtx/uridNiuxX8sEjmhG3oGn31IbWoM5CzELqekEj/hCntU+4o+g5OfHPmcoboSeg6rBeT+68sGS7tSI8Z9KcwEp+w2Uo44OZDoGnwW0tKwhEQ3lXFIE+j4TvWtxFhegk2dleC0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764276280; c=relaxed/simple; bh=D2EsVI2xh2ZhL05Tk+r0h3Pg9Cl/77LcPo6nKDQSuGY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Qge0ei/5CR37SAeysL31og8HSpvrQBU6xz/+ZJjNUKNoTWZmHRX3XXa7SZSx9nhzmwrhEapqLOJHJu805W3L72JJ2SwQNd+P23vBAnqVj4uDdzadYcI0t56Ggg9wbbM28YfFKD871hZzqZASNNC/z96aNjvmYBVbEOiBxNyLJg0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=DotU0Rr0; arc=none smtp.client-ip=209.85.221.53 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="DotU0Rr0" Received: by mail-wr1-f53.google.com with SMTP id ffacd0b85a97d-42b3b29153fso734611f8f.3 for ; Thu, 27 Nov 2025 12:44:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1764276277; x=1764881077; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=vy0XbKcemKbh0CcuwZvqfWEa3IvL5tyGOdRED1Ad+uQ=; b=DotU0Rr0wYeSWTrWjGX/hBXLnQeUJKMJjdb5kKAplXeQlnY0TpvGr0vyMBlJOvTUwk Xjgkiix19rVRe8+vvy8g9kTRuKDtzTXAWUsm9TzfgAbeVmVMaULHrPHsPnxqi2Ev2ioC c/xFZQQZzexZLpT+l7tmuwnRQK0/daDbEN9GbGVwrYiyAuzPS3cev62PXtoBd0H8P3A0 NV1jpL/DnDOGmDI63j3gSIfs7Jv+Os52cf3gKKvNTK1G9l8Cxca7ZyJIMV7VSk2vOKGh s0wH9bBwWYbS4dj/u2VBgZtJ6xcsiFIVNAsuFkxcdueUhB2srfjlNlcNG/ekJVufYK5J 5Ltg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1764276277; x=1764881077; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=vy0XbKcemKbh0CcuwZvqfWEa3IvL5tyGOdRED1Ad+uQ=; b=O9kwt5oZ5MVsqnEXU35mNWssHatWEZF/42Xj/Z4r/BAdEfYF9hvPptPnOzvn18HHhq eHHStef8I1hnazqQ4B1rNP766Tn8KvbuhmJAIPpa9uBl/wqq7dm1TfpBH1aCFXzh2i7P PO7qoxSsoy7QMLH+0GC+ZTPU04Z9LPBVAJxjKIHx1kTw+B7cjWELfQ1bsuxJSSpQP2Fi 6D4f1dpsYfBOEWnfh2DWiuO0mMZSYeFHhxA9aq1MSyiPIK+g6ym+xm5uCWbQbm1Yw46F BoGcdtCF/uYXERr0+UUSV1Xe6AZ7VXW3wmNQP2jQPPZ5FisGDViezwL2tyJF2b2Nr8kZ 4zPg== X-Forwarded-Encrypted: i=1; AJvYcCVsFBZNjwGihUgX77tmbsSH4fkmNOeOKffK1V7bF/mJpk0l1tEfwnuz/C/Ym/MV4bUSoTOUBok2WQ==@vger.kernel.org X-Gm-Message-State: AOJu0Yzsgc61oggikGTo6VP8UPZdZr+9pgh7W+2b1XXCPdxPmvzYcdqf 2Ee29Amz46uUTjalYIiNJ8ZrPyUpkITQz2KuLhP6lny6j+ZXl3ExZQlt X-Gm-Gg: ASbGncvv0My5N9hWU37u3jO0aVpav+4F+QLvNbj38KXKsUQ+2HXNMeQtbupNmMtqBt3 6zDlLOvkwuE2cVwlS2S01KToiUhPpNkMBDoq/nJDDK1lAaNhDxv0kD63qHkXGoZMIDwqwc14DkZ L6/pk5XUqtw7JGFZp1bzB4ZCPqMhTaLEw9+tLSNeWL/OILI9Gz+skbQ/pGXSkagRQmDqB3bSMdS x+4d3VFKx+I9USQeCXj4kUbj8dDgQGx97abiP59GUutFYNb0E+ERBf1BXwDy1RVYpQBnhTV+FyS AsmO/NlPOEtBj8lc2BEpgB4f5tkBlIbHPu/L0g29k6bzWhqTHK5sx0GYLI6PmhcSofIOVoUyY7+ i4GU/vOI8DfKEkYlgD9319x7Rg0pWo6y/KnDdYcJgQTaYz5LuVGrexUH+xH8711oXvMCa2QGQyn NxXbbFai7fBwtHSQ== X-Google-Smtp-Source: AGHT+IE4EdepoSGguIef0SYCibCymaDm7WjMY8rUmVSyXGFaZ7vrRrlEhrAxCK+PPLWhSAF3UH6tKg== X-Received: by 2002:a05:6000:2f81:b0:429:bc68:6c95 with SMTP id ffacd0b85a97d-42cc1d520camr29604197f8f.47.1764276277267; Thu, 27 Nov 2025 12:44:37 -0800 (PST) Received: from 127.mynet ([2a01:4b00:bd21:4f00:7cc6:d3ca:494:116c]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-42e1c5d614asm5346105f8f.12.2025.11.27.12.44.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Nov 2025 12:44:36 -0800 (PST) From: Pavel Begunkov To: netdev@vger.kernel.org Cc: "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Jonathan Corbet , Michael Chan , Pavan Chebbi , Andrew Lunn , Ilias Apalodimas , Stanislav Fomichev , Pavel Begunkov , Jens Axboe , Simon Horman , linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, io-uring@vger.kernel.org, dtatulea@nvidia.com Subject: [PATCH net-next v6 6/8] eth: bnxt: allow providers to set rx buf size Date: Thu, 27 Nov 2025 20:44:19 +0000 Message-ID: <9342d7dd5e663d3d44419229d6c9971b67e3f059.1764264798.git.asml.silence@gmail.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Implement NDO_QUEUE_RX_BUF_SIZE and take the rx buf size from the memory providers. Signed-off-by: Pavel Begunkov --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 34 +++++++++++++++++++++++ drivers/net/ethernet/broadcom/bnxt/bnxt.h | 1 + 2 files changed, 35 insertions(+) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index fc88566779a4..698ed30b1dcc 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -15906,16 +15906,46 @@ static const struct netdev_stat_ops bnxt_stat_ops = { .get_base_stats = bnxt_get_base_stats, }; +static ssize_t bnxt_get_rx_buf_size(struct bnxt *bp, int rxq_idx) +{ + struct netdev_rx_queue *rxq = __netif_get_rx_queue(bp->dev, rxq_idx); + size_t rx_buf_size; + + rx_buf_size = rxq->mp_params.rx_buf_len; + if (!rx_buf_size) + return BNXT_RX_PAGE_SIZE; + + /* Older chips need MSS calc so rx_buf_len is not supported, + * but we don't set queue ops for them so we should never get here. + */ + if (!(bp->flags & BNXT_FLAG_CHIP_P5_PLUS)) + return -EINVAL; + + if (!is_power_of_2(rx_buf_size)) + return -ERANGE; + + if (rx_buf_size < BNXT_RX_PAGE_SIZE || + rx_buf_size > BNXT_MAX_RX_PAGE_SIZE) + return -ERANGE; + + return rx_buf_size; +} + static int bnxt_queue_mem_alloc(struct net_device *dev, void *qmem, int idx) { struct bnxt_rx_ring_info *rxr, *clone; struct bnxt *bp = netdev_priv(dev); struct bnxt_ring_struct *ring; + ssize_t rx_buf_size; int rc; if (!bp->rx_ring) return -ENETDOWN; + rx_buf_size = bnxt_get_rx_buf_size(bp, idx); + if (rx_buf_size < 0) + return rx_buf_size; + rxr = &bp->rx_ring[idx]; clone = qmem; memcpy(clone, rxr, sizeof(*rxr)); @@ -15927,6 +15957,7 @@ static int bnxt_queue_mem_alloc(struct net_device *dev, void *qmem, int idx) clone->rx_sw_agg_prod = 0; clone->rx_next_cons = 0; clone->need_head_pool = false; + clone->rx_page_size = rx_buf_size; rc = bnxt_alloc_rx_page_pool(bp, clone, rxr->page_pool->p.nid); if (rc) @@ -16053,6 +16084,8 @@ static void bnxt_copy_rx_ring(struct bnxt *bp, src_ring = &src->rx_agg_ring_struct; src_rmem = &src_ring->ring_mem; + dst->rx_page_size = src->rx_page_size; + WARN_ON(dst_rmem->nr_pages != src_rmem->nr_pages); WARN_ON(dst_rmem->page_size != src_rmem->page_size); WARN_ON(dst_rmem->flags != src_rmem->flags); @@ -16205,6 +16238,7 @@ static const struct netdev_queue_mgmt_ops bnxt_queue_mgmt_ops = { .ndo_queue_mem_free = bnxt_queue_mem_free, .ndo_queue_start = bnxt_queue_start, .ndo_queue_stop = bnxt_queue_stop, + .supported_params = NDO_QUEUE_RX_BUF_SIZE, }; static void bnxt_remove_one(struct pci_dev *pdev) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index bfe36ea1e7c5..b59b8e4984f4 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -759,6 +759,7 @@ struct nqe_cn { #endif #define BNXT_RX_PAGE_SIZE (1 << BNXT_RX_PAGE_SHIFT) +#define BNXT_MAX_RX_PAGE_SIZE (1 << 15) #define BNXT_MAX_MTU 9500 -- 2.52.0