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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Matt Vollrath Date: Fri, 31 Jul 2026 08:41:09 -0400 Message-ID: <20260731124109.99065-4-tactii@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260731124109.99065-1-tactii@gmail.com> References: <20260731124109.99065-1-tactii@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1785502184; x=1786106984; darn=lists.osuosl.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:content-type; bh=OMT9YR+Z2gS6Eh7vbnulZB5ih8XO9hWY1MpWR6T+nYA=; b=Ik4Z6lg1yLhqWe8Zk09Q+ueHFdf32HmGJk1tIv05MZrWOSua+TIngscMmW13hc401u LnSdpDKX5vYGSBIT42t55wl39u8KmmlX8OqFxQQQHprvb6haD7IjgMBwWCz91qCjRk9k YB3opANopuyMVXkOJT4VhwfbMOQFrb/EBM/HuKCUJLpqnM4hI5ACFmst2zbnfdhib7do 845kH4JAo3pUz0NUbpyAlSkONSgV5ihaCGXJRtSohtmZDFWFGtQlb/LROOqhwJqnROPv yQsJxCW2VlzSo8XX/6v+Eq3TLO2Y4c1TOsoWMZNKfPZavzUQDTcN4JlyMDg7yBRur1Ca eMIA== X-Mailman-Original-Authentication-Results: smtp1.osuosl.org; dmarc=pass (p=none dis=none) header.from=gmail.com X-Mailman-Original-Authentication-Results: smtp1.osuosl.org; dkim=pass (2048-bit key, unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20251104 header.b=Ik4Z6lg1 Subject: [Intel-wired-lan] [PATCH iwl-next 3/3] iavf: use cached page_pool ref in skb helpers X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" Deriving a reference to the page pool from netmem_desc requires loading the struct. We already have a cached reference to the pool, so use that instead. Signed-off-by: Matt Vollrath Assisted-by: Claude:claude-5-fable --- drivers/net/ethernet/intel/iavf/iavf_txrx.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/intel/iavf/iavf_txrx.c b/drivers/net/ethernet/intel/iavf/iavf_txrx.c index 3ae2f0a0ee4d..9dc5f0761d8b 100644 --- a/drivers/net/ethernet/intel/iavf/iavf_txrx.c +++ b/drivers/net/ethernet/intel/iavf/iavf_txrx.c @@ -1184,6 +1184,7 @@ static bool iavf_cleanup_headers(struct iavf_ring *rx_ring, struct sk_buff *skb) /** * iavf_add_rx_frag - Add contents of Rx buffer to sk_buff + * @pp: page pool the buffer was allocated from * @skb: sk_buff to place the data into * @rx_buffer: buffer containing page to add * @size: packet length from rx_desc @@ -1193,11 +1194,11 @@ static bool iavf_cleanup_headers(struct iavf_ring *rx_ring, struct sk_buff *skb) * * The function will then update the page offset. **/ -static void iavf_add_rx_frag(struct sk_buff *skb, +static void iavf_add_rx_frag(const struct page_pool *pp, struct sk_buff *skb, const struct libeth_fqe *rx_buffer, unsigned int size) { - u32 hr = netmem_get_pp(rx_buffer->netmem)->p.offset; + u32 hr = pp->p.offset; skb_add_rx_frag_netmem(skb, skb_shinfo(skb)->nr_frags, rx_buffer->netmem, rx_buffer->offset + hr, @@ -1206,17 +1207,19 @@ static void iavf_add_rx_frag(struct sk_buff *skb, /** * iavf_build_skb - Build skb around an existing buffer + * @pp: page pool the buffer was allocated from * @rx_buffer: Rx buffer to pull data from * @size: size of buffer to add to skb * * This function builds an skb around an existing Rx buffer, taking care * to set up the skb correctly and avoid any memcpy overhead. */ -static struct sk_buff *iavf_build_skb(const struct libeth_fqe *rx_buffer, +static struct sk_buff *iavf_build_skb(const struct page_pool *pp, + const struct libeth_fqe *rx_buffer, unsigned int size) { struct page *buf_page = __netmem_to_page(rx_buffer->netmem); - u32 hr = pp_page_to_nmdesc(buf_page)->pp->p.offset; + u32 hr = pp->p.offset; struct sk_buff *skb; void *va; @@ -1430,9 +1433,9 @@ static int iavf_clean_rx_irq(struct iavf_ring *rx_ring, int budget) /* retrieve a buffer from the ring */ if (skb) - iavf_add_rx_frag(skb, rx_buffer, fields.len); + iavf_add_rx_frag(pp, skb, rx_buffer, fields.len); else - skb = iavf_build_skb(rx_buffer, fields.len); + skb = iavf_build_skb(pp, rx_buffer, fields.len); /* exit if we failed to retrieve a buffer */ if (!skb) { -- 2.43.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yw1-f177.google.com (mail-yw1-f177.google.com [209.85.128.177]) (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 02777428474 for ; Fri, 31 Jul 2026 12:49:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.177 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785502186; cv=none; b=ALCR+4s2/mua5ET89cbPfLtwwgpyUdj2sZUx+4AySYL0VIXN17HCvfUNbygGS/Ke4FbJLMFYh4XB1SYG9AIxnWqFjLkQMWFJpPwjKTqPGwxNwkAdhhSrgVQFztJa3EPObpLsXtaSVeCzEb4xQOWceg5ZxFQKDP0II72/eQNnXQQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785502186; 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Fri, 31 Jul 2026 05:49:43 -0700 (PDT) Received: from devobuntu.lan ([2600:6c5c:6b00:316::23]) by smtp.gmail.com with ESMTPSA id 00721157ae682-81fcd108f0bsm5695367b3.35.2026.07.31.05.49.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 31 Jul 2026 05:49:43 -0700 (PDT) From: Matt Vollrath To: intel-wired-lan@lists.osuosl.org Cc: netdev@vger.kernel.org, Alexander Lobakin , Tony Nguyen , Przemek Kitszel , Andrew Lunn , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Matt Vollrath Subject: [PATCH iwl-next 3/3] iavf: use cached page_pool ref in skb helpers Date: Fri, 31 Jul 2026 08:41:09 -0400 Message-ID: <20260731124109.99065-4-tactii@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260731124109.99065-1-tactii@gmail.com> References: <20260731124109.99065-1-tactii@gmail.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Deriving a reference to the page pool from netmem_desc requires loading the struct. We already have a cached reference to the pool, so use that instead. Signed-off-by: Matt Vollrath Assisted-by: Claude:claude-5-fable --- drivers/net/ethernet/intel/iavf/iavf_txrx.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/intel/iavf/iavf_txrx.c b/drivers/net/ethernet/intel/iavf/iavf_txrx.c index 3ae2f0a0ee4d..9dc5f0761d8b 100644 --- a/drivers/net/ethernet/intel/iavf/iavf_txrx.c +++ b/drivers/net/ethernet/intel/iavf/iavf_txrx.c @@ -1184,6 +1184,7 @@ static bool iavf_cleanup_headers(struct iavf_ring *rx_ring, struct sk_buff *skb) /** * iavf_add_rx_frag - Add contents of Rx buffer to sk_buff + * @pp: page pool the buffer was allocated from * @skb: sk_buff to place the data into * @rx_buffer: buffer containing page to add * @size: packet length from rx_desc @@ -1193,11 +1194,11 @@ static bool iavf_cleanup_headers(struct iavf_ring *rx_ring, struct sk_buff *skb) * * The function will then update the page offset. **/ -static void iavf_add_rx_frag(struct sk_buff *skb, +static void iavf_add_rx_frag(const struct page_pool *pp, struct sk_buff *skb, const struct libeth_fqe *rx_buffer, unsigned int size) { - u32 hr = netmem_get_pp(rx_buffer->netmem)->p.offset; + u32 hr = pp->p.offset; skb_add_rx_frag_netmem(skb, skb_shinfo(skb)->nr_frags, rx_buffer->netmem, rx_buffer->offset + hr, @@ -1206,17 +1207,19 @@ static void iavf_add_rx_frag(struct sk_buff *skb, /** * iavf_build_skb - Build skb around an existing buffer + * @pp: page pool the buffer was allocated from * @rx_buffer: Rx buffer to pull data from * @size: size of buffer to add to skb * * This function builds an skb around an existing Rx buffer, taking care * to set up the skb correctly and avoid any memcpy overhead. */ -static struct sk_buff *iavf_build_skb(const struct libeth_fqe *rx_buffer, +static struct sk_buff *iavf_build_skb(const struct page_pool *pp, + const struct libeth_fqe *rx_buffer, unsigned int size) { struct page *buf_page = __netmem_to_page(rx_buffer->netmem); - u32 hr = pp_page_to_nmdesc(buf_page)->pp->p.offset; + u32 hr = pp->p.offset; struct sk_buff *skb; void *va; @@ -1430,9 +1433,9 @@ static int iavf_clean_rx_irq(struct iavf_ring *rx_ring, int budget) /* retrieve a buffer from the ring */ if (skb) - iavf_add_rx_frag(skb, rx_buffer, fields.len); + iavf_add_rx_frag(pp, skb, rx_buffer, fields.len); else - skb = iavf_build_skb(rx_buffer, fields.len); + skb = iavf_build_skb(pp, rx_buffer, fields.len); /* exit if we failed to retrieve a buffer */ if (!skb) { -- 2.43.0