From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 874F6A04A3; Mon, 3 Jan 2022 16:08:42 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 57A22410E0; Mon, 3 Jan 2022 16:08:41 +0100 (CET) Received: from mx0b-0016f401.pphosted.com (mx0b-0016f401.pphosted.com [67.231.156.173]) by mails.dpdk.org (Postfix) with ESMTP id 897074069F for ; Mon, 3 Jan 2022 16:08:39 +0100 (CET) Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.16.1.2/8.16.1.2) with ESMTP id 2037tVUC029250; Mon, 3 Jan 2022 07:08:37 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=pfpt0220; bh=UDF/kwG/ou8SIjIDgcfAhSL3dAl0RGzW1PrCA9M0nBQ=; b=cEH8IN31sbnDOq6VikArq4xG1ThCMxShSEOGdDGltZ/o3ei1G1VBxMnON/oBj/QkPNd7 G44YJMzKEsUgb0mzaYyDpVA851PhjtuwM7vQTti9qNoOc4I3dwUugFfsqDh3K6C63Nn5 yTf/bXRvKjOU6YCAzZM0yx09OZm+QKq9jNItfLaYftXGywibtyEn6XV4oVY7A67gqzbG kTS1Y+YdSMnkxG91zOuMOeOFuZSANhC2YJYFBKFqsD/FFkJfpbHQES88RE0TihobD36z znz/mDSlBnBAHHsp41YLkcnm6bz5EFoklD6A54ehhrGJqsO5ywmHbZpLLsm6bqDOw4tn 5Q== Received: from dc5-exch01.marvell.com ([199.233.59.181]) by mx0b-0016f401.pphosted.com (PPS) with ESMTPS id 3dbw5w6mn1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Mon, 03 Jan 2022 07:08:37 -0800 Received: from DC5-EXCH02.marvell.com (10.69.176.39) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 3 Jan 2022 07:08:35 -0800 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server id 15.0.1497.18 via Frontend Transport; Mon, 3 Jan 2022 07:08:35 -0800 Received: from localhost.localdomain (unknown [10.28.48.55]) by maili.marvell.com (Postfix) with ESMTP id AE7FC3F70A9; Mon, 3 Jan 2022 07:08:31 -0800 (PST) From: Akhil Goyal To: CC: , , , , , , , , , , , Akhil Goyal Subject: [PATCH 1/8] ethdev: introduce IP reassembly offload Date: Mon, 3 Jan 2022 20:38:06 +0530 Message-ID: <20220103150813.1694888-2-gakhil@marvell.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220103150813.1694888-1-gakhil@marvell.com> References: <20210823100259.1619886-1-gakhil@marvell.com> <20220103150813.1694888-1-gakhil@marvell.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Proofpoint-ORIG-GUID: DScuw4DURZV6zyA64O7l_XQMtRi_oknu X-Proofpoint-GUID: DScuw4DURZV6zyA64O7l_XQMtRi_oknu X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.790,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2022-01-03_06,2022-01-01_01,2021-12-02_01 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org IP Reassembly is a costly operation if it is done in software. The operation becomes even more costlier if IP fragmants are encrypted. However, if it is offloaded to HW, it can considerably save application cycles. Hence, a new offload RTE_ETH_RX_OFFLOAD_IP_REASSEMBLY is introduced in ethdev for devices which can attempt reassembly of packets in hardware. rte_eth_dev_info is updated with the reassembly capabilities which a device can support. The resulting reassembled packet would be a typical segmented mbuf in case of success. And if reassembly of fragments is failed or is incomplete (if fragments do not come before the reass_timeout), the mbuf ol_flags can be updated. This is updated in a subsequent patch. Signed-off-by: Akhil Goyal --- doc/guides/nics/features.rst | 12 ++++++++++++ lib/ethdev/rte_ethdev.c | 1 + lib/ethdev/rte_ethdev.h | 32 +++++++++++++++++++++++++++++++- 3 files changed, 44 insertions(+), 1 deletion(-) diff --git a/doc/guides/nics/features.rst b/doc/guides/nics/features.rst index 27be2d2576..1dfdee9602 100644 --- a/doc/guides/nics/features.rst +++ b/doc/guides/nics/features.rst @@ -602,6 +602,18 @@ Supports inner packet L4 checksum. ``tx_offload_capa,tx_queue_offload_capa:RTE_ETH_TX_OFFLOAD_OUTER_UDP_CKSUM``. +.. _nic_features_ip_reassembly: + +IP reassembly +------------- + +Supports IP reassembly in hardware. + +* **[uses] rte_eth_rxconf,rte_eth_rxmode**: ``offloads:RTE_ETH_RX_OFFLOAD_IP_REASSEMBLY``. +* **[provides] mbuf**: ``mbuf.ol_flags:RTE_MBUF_F_RX_IP_REASSEMBLY_INCOMPLETE``. +* **[provides] rte_eth_dev_info**: ``reass_capa``. + + .. _nic_features_shared_rx_queue: Shared Rx queue diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c index a1d475a292..d9a03f12f9 100644 --- a/lib/ethdev/rte_ethdev.c +++ b/lib/ethdev/rte_ethdev.c @@ -126,6 +126,7 @@ static const struct { RTE_RX_OFFLOAD_BIT2STR(OUTER_UDP_CKSUM), RTE_RX_OFFLOAD_BIT2STR(RSS_HASH), RTE_RX_OFFLOAD_BIT2STR(BUFFER_SPLIT), + RTE_RX_OFFLOAD_BIT2STR(IP_REASSEMBLY), }; #undef RTE_RX_OFFLOAD_BIT2STR diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h index fa299c8ad7..11427b2e4d 100644 --- a/lib/ethdev/rte_ethdev.h +++ b/lib/ethdev/rte_ethdev.h @@ -1586,6 +1586,7 @@ struct rte_eth_conf { #define RTE_ETH_RX_OFFLOAD_RSS_HASH RTE_BIT64(19) #define DEV_RX_OFFLOAD_RSS_HASH RTE_ETH_RX_OFFLOAD_RSS_HASH #define RTE_ETH_RX_OFFLOAD_BUFFER_SPLIT RTE_BIT64(20) +#define RTE_ETH_RX_OFFLOAD_IP_REASSEMBLY RTE_BIT64(21) #define RTE_ETH_RX_OFFLOAD_CHECKSUM (RTE_ETH_RX_OFFLOAD_IPV4_CKSUM | \ RTE_ETH_RX_OFFLOAD_UDP_CKSUM | \ @@ -1781,6 +1782,33 @@ enum rte_eth_representor_type { RTE_ETH_REPRESENTOR_PF, /**< representor of Physical Function. */ }; +/* Flag to offload IP reassembly for IPv4 packets. */ +#define RTE_ETH_DEV_REASSEMBLY_F_IPV4 (RTE_BIT32(0)) +/* Flag to offload IP reassembly for IPv6 packets. */ +#define RTE_ETH_DEV_REASSEMBLY_F_IPV6 (RTE_BIT32(1)) +/** + * @warning + * @b EXPERIMENTAL: this structure may change without prior notice. + * + * A structure used to set IP reassembly configuration. + * + * If RTE_ETH_RX_OFFLOAD_IP_REASSEMBLY flag is set in offloads field, + * the PMD will attempt IP reassembly for the received packets as per + * properties defined in this structure: + * + */ +struct rte_eth_ip_reass_params { + /** Maximum time in ms which PMD can wait for other fragments. */ + uint32_t reass_timeout; + /** Maximum number of fragments that can be reassembled. */ + uint16_t max_frags; + /** + * Flags to enable reassembly of packet types - + * RTE_ETH_DEV_REASSEMBLY_F_xxx. + */ + uint16_t flags; +}; + /** * A structure used to retrieve the contextual information of * an Ethernet device, such as the controlling driver of the @@ -1841,8 +1869,10 @@ struct rte_eth_dev_info { * embedded managed interconnect/switch. */ struct rte_eth_switch_info switch_info; + /** IP reassembly offload capabilities that a device can support. */ + struct rte_eth_ip_reass_params reass_capa; - uint64_t reserved_64s[2]; /**< Reserved for future fields */ + uint64_t reserved_64s[1]; /**< Reserved for future fields */ void *reserved_ptrs[2]; /**< Reserved for future fields */ }; -- 2.25.1