From patchwork Fri Aug 24 16:24:24 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Lam, Tiago" X-Patchwork-Id: 961933 X-Patchwork-Delegate: ian.stokes@intel.com 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=openvswitch.org (client-ip=140.211.169.12; helo=mail.linuxfoundation.org; envelope-from=ovs-dev-bounces@openvswitch.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=intel.com Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41xmtr6Dcxz9s3C for ; Sat, 25 Aug 2018 02:28:52 +1000 (AEST) Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 68720E3F; Fri, 24 Aug 2018 16:24:59 +0000 (UTC) X-Original-To: ovs-dev@openvswitch.org Delivered-To: ovs-dev@mail.linuxfoundation.org Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id A6B5EE45 for ; Fri, 24 Aug 2018 16:24:57 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 3733F7EB for ; Fri, 24 Aug 2018 16:24:56 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 24 Aug 2018 09:24:55 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.53,283,1531810800"; d="scan'208";a="84649670" Received: from silpixa00399125.ir.intel.com ([10.237.223.34]) by orsmga001.jf.intel.com with ESMTP; 24 Aug 2018 09:24:53 -0700 From: Tiago Lam To: ovs-dev@openvswitch.org Date: Fri, 24 Aug 2018 17:24:24 +0100 Message-Id: <1535127870-91663-9-git-send-email-tiago.lam@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1535127870-91663-1-git-send-email-tiago.lam@intel.com> References: <1535127870-91663-1-git-send-email-tiago.lam@intel.com> X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Cc: Michael Qiu , i.maximets@samsung.com Subject: [ovs-dev] [PATCH v9 08/14] dp-packet: copy data from multi-seg. DPDK mbuf X-BeenThere: ovs-dev@openvswitch.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: ovs-dev-bounces@openvswitch.org Errors-To: ovs-dev-bounces@openvswitch.org From: Michael Qiu When doing packet clone, if packet source is from DPDK driver, multi-segment must be considered, and copy the segment's data one by one. Also, lots of DPDK mbuf's info is missed during a copy, like packet type, ol_flags, etc. That information is very important for DPDK to do packets processing. Co-authored-by: Mark Kavanagh Co-authored-by: Tiago Lam Signed-off-by: Michael Qiu Signed-off-by: Mark Kavanagh Signed-off-by: Tiago Lam Acked-by: Eelco Chaudron --- lib/dp-packet.c | 69 ++++++++++++++++++++++++++++++++++++++++++++++--------- lib/dp-packet.h | 3 +++ lib/netdev-dpdk.c | 1 + 3 files changed, 62 insertions(+), 11 deletions(-) diff --git a/lib/dp-packet.c b/lib/dp-packet.c index 167bf43..806640b 100644 --- a/lib/dp-packet.c +++ b/lib/dp-packet.c @@ -48,6 +48,22 @@ dp_packet_use__(struct dp_packet *b, void *base, size_t allocated, dp_packet_set_size(b, 0); } +#ifdef DPDK_NETDEV +void +dp_packet_copy_mbuf_flags(struct dp_packet *dst, const struct dp_packet *src) +{ + ovs_assert(dst != NULL && src != NULL); + struct rte_mbuf *buf_dst = &(dst->mbuf); + struct rte_mbuf buf_src = src->mbuf; + + buf_dst->ol_flags = buf_src.ol_flags; + buf_dst->packet_type = buf_src.packet_type; + buf_dst->tx_offload = buf_src.tx_offload; +} +#else +#define dp_packet_copy_mbuf_flags(arg1, arg2) +#endif + /* Initializes 'b' as an empty dp_packet that contains the 'allocated' bytes of * memory starting at 'base'. 'base' should be the first byte of a region * obtained from malloc(). It will be freed (with free()) if 'b' is resized or @@ -158,6 +174,44 @@ dp_packet_clone(const struct dp_packet *buffer) return dp_packet_clone_with_headroom(buffer, 0); } +#ifdef DPDK_NETDEV +struct dp_packet * +dp_packet_clone_with_headroom(const struct dp_packet *b, size_t headroom) { + struct dp_packet *new_buffer; + uint32_t pkt_len = dp_packet_size(b); + + /* copy multi-seg data */ + if (b->source == DPBUF_DPDK && !rte_pktmbuf_is_contiguous(&b->mbuf)) { + void *dst = NULL; + struct rte_mbuf *mbuf = CONST_CAST(struct rte_mbuf *, &b->mbuf); + + new_buffer = dp_packet_new_with_headroom(pkt_len, headroom); + dst = dp_packet_data(new_buffer); + dp_packet_set_size(new_buffer, pkt_len); + + if (!rte_pktmbuf_read(mbuf, 0, pkt_len, dst)) { + return NULL; + } + } else { + new_buffer = dp_packet_clone_data_with_headroom(dp_packet_data(b), + dp_packet_size(b), + headroom); + } + + /* Copy the following fields into the returned buffer: l2_pad_size, + * l2_5_ofs, l3_ofs, l4_ofs, cutlen, packet_type and md. */ + memcpy(&new_buffer->l2_pad_size, &b->l2_pad_size, + sizeof(struct dp_packet) - + offsetof(struct dp_packet, l2_pad_size)); + + dp_packet_copy_mbuf_flags(new_buffer, b); + if (dp_packet_rss_valid(new_buffer)) { + new_buffer->mbuf.hash.rss = b->mbuf.hash.rss; + } + + return new_buffer; +} +#else /* Creates and returns a new dp_packet whose data are copied from 'buffer'. * The returned dp_packet will additionally have 'headroom' bytes of * headroom. */ @@ -165,32 +219,25 @@ struct dp_packet * dp_packet_clone_with_headroom(const struct dp_packet *buffer, size_t headroom) { struct dp_packet *new_buffer; + uint32_t pkt_len = dp_packet_size(buffer); new_buffer = dp_packet_clone_data_with_headroom(dp_packet_data(buffer), - dp_packet_size(buffer), - headroom); + pkt_len, headroom); + /* Copy the following fields into the returned buffer: l2_pad_size, * l2_5_ofs, l3_ofs, l4_ofs, cutlen, packet_type and md. */ memcpy(&new_buffer->l2_pad_size, &buffer->l2_pad_size, sizeof(struct dp_packet) - offsetof(struct dp_packet, l2_pad_size)); -#ifdef DPDK_NETDEV - new_buffer->mbuf.ol_flags = buffer->mbuf.ol_flags; -#else new_buffer->rss_hash_valid = buffer->rss_hash_valid; -#endif - if (dp_packet_rss_valid(new_buffer)) { -#ifdef DPDK_NETDEV - new_buffer->mbuf.hash.rss = buffer->mbuf.hash.rss; -#else new_buffer->rss_hash = buffer->rss_hash; -#endif } return new_buffer; } +#endif /* Creates and returns a new dp_packet that initially contains a copy of the * 'size' bytes of data starting at 'data' with no headroom or tailroom. */ diff --git a/lib/dp-packet.h b/lib/dp-packet.h index 3a99044..022e420 100644 --- a/lib/dp-packet.h +++ b/lib/dp-packet.h @@ -124,6 +124,9 @@ void dp_packet_init_dpdk(struct dp_packet *); void dp_packet_init(struct dp_packet *, size_t); void dp_packet_uninit(struct dp_packet *); +void dp_packet_copy_mbuf_flags(struct dp_packet *dst, + const struct dp_packet *src); + struct dp_packet *dp_packet_new(size_t); struct dp_packet *dp_packet_new_with_headroom(size_t, size_t headroom); struct dp_packet *dp_packet_clone(const struct dp_packet *); diff --git a/lib/netdev-dpdk.c b/lib/netdev-dpdk.c index aee8e20..e005d00 100644 --- a/lib/netdev-dpdk.c +++ b/lib/netdev-dpdk.c @@ -2364,6 +2364,7 @@ dpdk_do_tx_copy(struct netdev *netdev, int qid, struct dp_packet_batch *batch) memcpy(rte_pktmbuf_mtod(pkts[txcnt], void *), dp_packet_data(packet), size); dp_packet_set_size((struct dp_packet *)pkts[txcnt], size); + dp_packet_copy_mbuf_flags((struct dp_packet *)pkts[txcnt], packet); txcnt++; }