From patchwork Thu Jun 20 08:39:16 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Laatz, Kevin" X-Patchwork-Id: 1119852 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=osuosl.org (client-ip=140.211.166.133; helo=hemlock.osuosl.org; envelope-from=intel-wired-lan-bounces@osuosl.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=intel.com Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 45VHC74BCRz9sBp for ; Fri, 21 Jun 2019 08:52:35 +1000 (AEST) Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id C040B87E3D; Thu, 20 Jun 2019 22:52:33 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id C7GhYu6d3lj9; Thu, 20 Jun 2019 22:52:31 +0000 (UTC) Received: from ash.osuosl.org (ash.osuosl.org [140.211.166.34]) by hemlock.osuosl.org (Postfix) with ESMTP id 7E33B87E6D; Thu, 20 Jun 2019 22:52:31 +0000 (UTC) X-Original-To: intel-wired-lan@lists.osuosl.org Delivered-To: intel-wired-lan@lists.osuosl.org Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by ash.osuosl.org (Postfix) with ESMTP id 4D4B21BF5E9 for ; Thu, 20 Jun 2019 16:53:53 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id 49B0920770 for ; Thu, 20 Jun 2019 16:53:53 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id CfJnC6S+AUBW for ; Thu, 20 Jun 2019 16:53:52 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by silver.osuosl.org (Postfix) with ESMTPS id A2DD220389 for ; Thu, 20 Jun 2019 16:53:52 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 20 Jun 2019 09:53:52 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,397,1557212400"; d="scan'208";a="183135130" Received: from silpixa00399838.ir.intel.com (HELO silpixa00399838.ger.corp.intel.com) ([10.237.223.110]) by fmsmga004.fm.intel.com with ESMTP; 20 Jun 2019 09:53:50 -0700 From: Kevin Laatz To: netdev@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net, bjorn.topel@intel.com, magnus.karlsson@intel.com Date: Thu, 20 Jun 2019 08:39:16 +0000 Message-Id: <20190620083924.1996-4-kevin.laatz@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190620083924.1996-1-kevin.laatz@intel.com> References: <20190620083924.1996-1-kevin.laatz@intel.com> X-Mailman-Approved-At: Thu, 20 Jun 2019 22:52:28 +0000 Subject: [Intel-wired-lan] [PATCH 03/11] xdp: add offset param to zero_copy_allocator 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: bruce.richardson@intel.com, ciara.loftus@intel.com, Kevin Laatz , intel-wired-lan@lists.osuosl.org, bpf@vger.kernel.com MIME-Version: 1.0 Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" This patch adds an offset parameter for zero_copy_allocator. This change is required for the unaligned chunk mode which will come later in this patch set. The offset parameter is required for calculating the original handle in unaligned mode since we can't easily mask back to it like in the aligned case. Signed-off-by: Kevin Laatz --- include/net/xdp.h | 3 ++- net/core/xdp.c | 11 ++++++----- 2 files changed, 8 insertions(+), 6 deletions(-) diff --git a/include/net/xdp.h b/include/net/xdp.h index 0f25b3675c5c..ea801fd2bf98 100644 --- a/include/net/xdp.h +++ b/include/net/xdp.h @@ -53,7 +53,8 @@ struct xdp_mem_info { struct page_pool; struct zero_copy_allocator { - void (*free)(struct zero_copy_allocator *zca, unsigned long handle); + void (*free)(struct zero_copy_allocator *zca, unsigned long handle, + off_t off); }; struct xdp_rxq_info { diff --git a/net/core/xdp.c b/net/core/xdp.c index 4b2b194f4f1f..a77a7162d213 100644 --- a/net/core/xdp.c +++ b/net/core/xdp.c @@ -322,7 +322,7 @@ EXPORT_SYMBOL_GPL(xdp_rxq_info_reg_mem_model); * of xdp_frames/pages in those cases. */ static void __xdp_return(void *data, struct xdp_mem_info *mem, bool napi_direct, - unsigned long handle) + unsigned long handle, off_t off) { struct xdp_mem_allocator *xa; struct page *page; @@ -353,7 +353,7 @@ static void __xdp_return(void *data, struct xdp_mem_info *mem, bool napi_direct, rcu_read_lock(); /* mem->id is valid, checked in xdp_rxq_info_reg_mem_model() */ xa = rhashtable_lookup(mem_id_ht, &mem->id, mem_id_rht_params); - xa->zc_alloc->free(xa->zc_alloc, handle); + xa->zc_alloc->free(xa->zc_alloc, handle, off); rcu_read_unlock(); default: /* Not possible, checked in xdp_rxq_info_reg_mem_model() */ @@ -363,19 +363,20 @@ static void __xdp_return(void *data, struct xdp_mem_info *mem, bool napi_direct, void xdp_return_frame(struct xdp_frame *xdpf) { - __xdp_return(xdpf->data, &xdpf->mem, false, 0); + __xdp_return(xdpf->data, &xdpf->mem, false, 0, 0); } EXPORT_SYMBOL_GPL(xdp_return_frame); void xdp_return_frame_rx_napi(struct xdp_frame *xdpf) { - __xdp_return(xdpf->data, &xdpf->mem, true, 0); + __xdp_return(xdpf->data, &xdpf->mem, true, 0, 0); } EXPORT_SYMBOL_GPL(xdp_return_frame_rx_napi); void xdp_return_buff(struct xdp_buff *xdp) { - __xdp_return(xdp->data, &xdp->rxq->mem, true, xdp->handle); + __xdp_return(xdp->data, &xdp->rxq->mem, true, xdp->handle, + xdp->data - xdp->data_hard_start); } EXPORT_SYMBOL_GPL(xdp_return_buff);