From patchwork Sun Apr 2 08:29:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jesper Dangaard Brouer X-Patchwork-Id: 13197292 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 17DF8C76196 for ; Sun, 2 Apr 2023 08:31:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229591AbjDBIbU (ORCPT ); Sun, 2 Apr 2023 04:31:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50174 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229933AbjDBIbP (ORCPT ); Sun, 2 Apr 2023 04:31:15 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D322AFF32 for ; Sun, 2 Apr 2023 01:29:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1680424191; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Ls0LCxScwZAOA9muty3Np74TRSfo9K/6deqKyTgKuYw=; b=MQHl47+1ACL8OJ8hsonYalLG2fL39jEw8dHCrmrOHbzDv9HiPYoq1BiVGyP+Ub4jV4Sof0 37kk0/HyixmMDcavEfcA/5d3FvFKqfeqaUSHyzZHZXGnPWCF0g0LFD1J+sAGvGgnMwDCZE 4lXFiIY5Z/m0grdoFFLyEQaefaWSP18= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-124-XHw7whdTOd6o3Tie7OJcWQ-1; Sun, 02 Apr 2023 04:29:45 -0400 X-MC-Unique: XHw7whdTOd6o3Tie7OJcWQ-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id A59E285A588; Sun, 2 Apr 2023 08:29:44 +0000 (UTC) Received: from firesoul.localdomain (unknown [10.45.242.12]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2A5A92027040; Sun, 2 Apr 2023 08:29:44 +0000 (UTC) Received: from [10.1.1.1] (localhost [IPv6:::1]) by firesoul.localdomain (Postfix) with ESMTP id 3BF7430736C72; Sun, 2 Apr 2023 10:29:43 +0200 (CEST) Subject: [PATCH bpf V6 1/5] xdp: rss hash types representation From: Jesper Dangaard Brouer To: bpf@vger.kernel.org, Stanislav Fomichev , =?utf-8?q?Toke?= =?utf-8?q?_H=C3=B8iland-J=C3=B8rgensen?= Cc: Jesper Dangaard Brouer , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, martin.lau@kernel.org, ast@kernel.org, daniel@iogearbox.net, alexandr.lobakin@intel.com, larysa.zaremba@intel.com, xdp-hints@xdp-project.net, anthony.l.nguyen@intel.com, yoong.siang.song@intel.com, boon.leong.ong@intel.com, intel-wired-lan@lists.osuosl.org, pabeni@redhat.com, jesse.brandeburg@intel.com, kuba@kernel.org, edumazet@google.com, john.fastabend@gmail.com, hawk@kernel.org, davem@davemloft.net, tariqt@nvidia.com, saeedm@nvidia.com, leon@kernel.org, linux-rdma@vger.kernel.org Date: Sun, 02 Apr 2023 10:29:43 +0200 Message-ID: <168042418317.4051476.14726330737892084150.stgit@firesoul> In-Reply-To: <168042409059.4051476.8176861613304493950.stgit@firesoul> References: <168042409059.4051476.8176861613304493950.stgit@firesoul> User-Agent: StGit/1.4 MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.4 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org The RSS hash type specifies what portion of packet data NIC hardware used when calculating RSS hash value. The RSS types are focused on Internet traffic protocols at OSI layers L3 and L4. L2 (e.g. ARP) often get hash value zero and no RSS type. For L3 focused on IPv4 vs. IPv6, and L4 primarily TCP vs UDP, but some hardware supports SCTP. Hardware RSS types are differently encoded for each hardware NIC. Most hardware represent RSS hash type as a number. Determining L3 vs L4 often requires a mapping table as there often isn't a pattern or sorting according to ISO layer. The patch introduce a XDP RSS hash type (enum xdp_rss_hash_type) that contain combinations to be used by drivers, which gets build up with bits from enum xdp_rss_type_bits. Both enum xdp_rss_type_bits and xdp_rss_hash_type get exposed to BPF via BTF, and it is up to the BPF-programmer to match using these defines. This proposal change the kfunc API bpf_xdp_metadata_rx_hash() adding a pointer value argument for provide the RSS hash type. Change function signature for all xmo_rx_hash calls in drivers to make it compile. The RSS type implementations for each driver comes as separate patches. Fixes: 3d76a4d3d4e5 ("bpf: XDP metadata RX kfuncs") Signed-off-by: Jesper Dangaard Brouer Acked-by: Toke Høiland-Jørgensen Acked-by: Stanislav Fomichev --- drivers/net/ethernet/mellanox/mlx4/en_rx.c | 3 + drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c | 3 + drivers/net/veth.c | 3 + include/linux/netdevice.h | 3 + include/net/xdp.h | 45 ++++++++++++++++++++++ net/core/xdp.c | 10 ++++- 6 files changed, 62 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c index 4b5e459b6d49..73d10aa4c503 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c @@ -681,7 +681,8 @@ int mlx4_en_xdp_rx_timestamp(const struct xdp_md *ctx, u64 *timestamp) return 0; } -int mlx4_en_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash) +int mlx4_en_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash, + enum xdp_rss_hash_type *rss_type) { struct mlx4_en_xdp_buff *_ctx = (void *)ctx; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c index c5dae48b7932..efe609f8e3aa 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c @@ -169,7 +169,8 @@ static int mlx5e_xdp_rx_timestamp(const struct xdp_md *ctx, u64 *timestamp) return 0; } -static int mlx5e_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash) +static int mlx5e_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash, + enum xdp_rss_hash_type *rss_type) { const struct mlx5e_xdp_buff *_ctx = (void *)ctx; diff --git a/drivers/net/veth.c b/drivers/net/veth.c index c1178915496d..424e8876a16b 100644 --- a/drivers/net/veth.c +++ b/drivers/net/veth.c @@ -1648,7 +1648,8 @@ static int veth_xdp_rx_timestamp(const struct xdp_md *ctx, u64 *timestamp) return 0; } -static int veth_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash) +static int veth_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash, + enum xdp_rss_hash_type *rss_type) { struct veth_xdp_buff *_ctx = (void *)ctx; diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 470085b121d3..c35f04f636f1 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1624,7 +1624,8 @@ struct net_device_ops { struct xdp_metadata_ops { int (*xmo_rx_timestamp)(const struct xdp_md *ctx, u64 *timestamp); - int (*xmo_rx_hash)(const struct xdp_md *ctx, u32 *hash); + int (*xmo_rx_hash)(const struct xdp_md *ctx, u32 *hash, + enum xdp_rss_hash_type *rss_type); }; /** diff --git a/include/net/xdp.h b/include/net/xdp.h index 41c57b8b1671..a76c4ea203ea 100644 --- a/include/net/xdp.h +++ b/include/net/xdp.h @@ -8,6 +8,7 @@ #include /* skb_shared_info */ #include +#include /** * DOC: XDP RX-queue information @@ -425,6 +426,50 @@ XDP_METADATA_KFUNC_xxx MAX_XDP_METADATA_KFUNC, }; +enum xdp_rss_hash_type { + /* First part: Individual bits for L3/L4 types */ + XDP_RSS_L3_IPV4 = BIT(0), + XDP_RSS_L3_IPV6 = BIT(1), + + /* The fixed (L3) IPv4 and IPv6 headers can both be followed by + * variable/dynamic headers, IPv4 called Options and IPv6 called + * Extension Headers. HW RSS type can contain this info. + */ + XDP_RSS_L3_DYNHDR = BIT(2), + + /* When RSS hash covers L4 then drivers MUST set XDP_RSS_L4 bit in + * addition to the protocol specific bit. This ease interaction with + * SKBs and avoids reserving a fixed mask for future L4 protocol bits. + */ + XDP_RSS_L4 = BIT(3), /* L4 based hash, proto can be unknown */ + XDP_RSS_L4_TCP = BIT(4), + XDP_RSS_L4_UDP = BIT(5), + XDP_RSS_L4_SCTP = BIT(6), + XDP_RSS_L4_IPSEC = BIT(7), /* L4 based hash include IPSEC SPI */ + + /* Second part: RSS hash type combinations used for driver HW mapping */ + XDP_RSS_TYPE_NONE = 0, + XDP_RSS_TYPE_L2 = XDP_RSS_TYPE_NONE, + + XDP_RSS_TYPE_L3_IPV4 = XDP_RSS_L3_IPV4, + XDP_RSS_TYPE_L3_IPV6 = XDP_RSS_L3_IPV6, + XDP_RSS_TYPE_L3_IPV4_OPT = XDP_RSS_L3_IPV4 | XDP_RSS_L3_DYNHDR, + XDP_RSS_TYPE_L3_IPV6_EX = XDP_RSS_L3_IPV6 | XDP_RSS_L3_DYNHDR, + + XDP_RSS_TYPE_L4_ANY = XDP_RSS_L4, + XDP_RSS_TYPE_L4_IPV4_TCP = XDP_RSS_L3_IPV4 | XDP_RSS_L4 | XDP_RSS_L4_TCP, + XDP_RSS_TYPE_L4_IPV4_UDP = XDP_RSS_L3_IPV4 | XDP_RSS_L4 | XDP_RSS_L4_UDP, + XDP_RSS_TYPE_L4_IPV4_SCTP = XDP_RSS_L3_IPV4 | XDP_RSS_L4 | XDP_RSS_L4_SCTP, + + XDP_RSS_TYPE_L4_IPV6_TCP = XDP_RSS_L3_IPV6 | XDP_RSS_L4 | XDP_RSS_L4_TCP, + XDP_RSS_TYPE_L4_IPV6_UDP = XDP_RSS_L3_IPV6 | XDP_RSS_L4 | XDP_RSS_L4_UDP, + XDP_RSS_TYPE_L4_IPV6_SCTP = XDP_RSS_L3_IPV6 | XDP_RSS_L4 | XDP_RSS_L4_SCTP, + + XDP_RSS_TYPE_L4_IPV6_TCP_EX = XDP_RSS_TYPE_L4_IPV6_TCP | XDP_RSS_L3_DYNHDR, + XDP_RSS_TYPE_L4_IPV6_UDP_EX = XDP_RSS_TYPE_L4_IPV6_UDP | XDP_RSS_L3_DYNHDR, + XDP_RSS_TYPE_L4_IPV6_SCTP_EX = XDP_RSS_TYPE_L4_IPV6_SCTP | XDP_RSS_L3_DYNHDR, +}; + #ifdef CONFIG_NET u32 bpf_xdp_metadata_kfunc_id(int id); bool bpf_dev_bound_kfunc_id(u32 btf_id); diff --git a/net/core/xdp.c b/net/core/xdp.c index 528d4b37983d..fb85aca81961 100644 --- a/net/core/xdp.c +++ b/net/core/xdp.c @@ -734,13 +734,21 @@ __bpf_kfunc int bpf_xdp_metadata_rx_timestamp(const struct xdp_md *ctx, u64 *tim * bpf_xdp_metadata_rx_hash - Read XDP frame RX hash. * @ctx: XDP context pointer. * @hash: Return value pointer. + * @rss_type: Return value pointer for RSS type. + * + * The RSS hash type (@rss_type) specifies what portion of packet headers NIC + * hardware used when calculating RSS hash value. The RSS type can be decoded + * via &enum xdp_rss_hash_type either matching on individual L3/L4 bits + * ``XDP_RSS_L*`` or by combined traditional *RSS Hashing Types* + * ``XDP_RSS_TYPE_L*``. * * Return: * * Returns 0 on success or ``-errno`` on error. * * ``-EOPNOTSUPP`` : means device driver doesn't implement kfunc * * ``-ENODATA`` : means no RX-hash available for this frame */ -__bpf_kfunc int bpf_xdp_metadata_rx_hash(const struct xdp_md *ctx, u32 *hash) +__bpf_kfunc int bpf_xdp_metadata_rx_hash(const struct xdp_md *ctx, u32 *hash, + enum xdp_rss_hash_type *rss_type) { return -EOPNOTSUPP; } From patchwork Sun Apr 2 08:29:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jesper Dangaard Brouer X-Patchwork-Id: 13197291 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 76487C7619A for ; Sun, 2 Apr 2023 08:31:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230133AbjDBIbT (ORCPT ); Sun, 2 Apr 2023 04:31:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50182 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229681AbjDBIbP (ORCPT ); Sun, 2 Apr 2023 04:31:15 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C75CB12BCF for ; Sun, 2 Apr 2023 01:29:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1680424195; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=i3MHHqoOS7n/QXgQznavf8gFNBnx4z6OXd+WEJfItp8=; b=B8k42PrV/ZefCYWv7cmols/Y9hwDTsHq/MlcuXhxiIUf/zmq26Bnb2tzKbLXjIGcocbGu9 Nnn6sjW7Qhb3CHkht/1D/b1Ia1fr6ePx6g+jgUlz8yc+WT5rjSWgBf4Ue01y6mW20papFC 5bQIAblS7brdN61hyx6X0u6MddlJ9Nk= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-547-t8L6YBCzMbatZ6VmBXwqTg-1; Sun, 02 Apr 2023 04:29:51 -0400 X-MC-Unique: t8L6YBCzMbatZ6VmBXwqTg-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 6AAE429ABA07; Sun, 2 Apr 2023 08:29:50 +0000 (UTC) Received: from firesoul.localdomain (unknown [10.45.242.12]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3317D400F4F; Sun, 2 Apr 2023 08:29:49 +0000 (UTC) Received: from [10.1.1.1] (localhost [IPv6:::1]) by firesoul.localdomain (Postfix) with ESMTP id 4BAEA30736C72; Sun, 2 Apr 2023 10:29:48 +0200 (CEST) Subject: [PATCH bpf V6 2/5] mlx5: bpf_xdp_metadata_rx_hash add xdp rss hash type From: Jesper Dangaard Brouer To: bpf@vger.kernel.org, Stanislav Fomichev , =?utf-8?q?Toke?= =?utf-8?q?_H=C3=B8iland-J=C3=B8rgensen?= Cc: Jesper Dangaard Brouer , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, martin.lau@kernel.org, ast@kernel.org, daniel@iogearbox.net, alexandr.lobakin@intel.com, larysa.zaremba@intel.com, xdp-hints@xdp-project.net, anthony.l.nguyen@intel.com, yoong.siang.song@intel.com, boon.leong.ong@intel.com, intel-wired-lan@lists.osuosl.org, pabeni@redhat.com, jesse.brandeburg@intel.com, kuba@kernel.org, edumazet@google.com, john.fastabend@gmail.com, hawk@kernel.org, davem@davemloft.net, tariqt@nvidia.com, saeedm@nvidia.com, leon@kernel.org, linux-rdma@vger.kernel.org Date: Sun, 02 Apr 2023 10:29:48 +0200 Message-ID: <168042418826.4051476.17501531513091177668.stgit@firesoul> In-Reply-To: <168042409059.4051476.8176861613304493950.stgit@firesoul> References: <168042409059.4051476.8176861613304493950.stgit@firesoul> User-Agent: StGit/1.4 MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org Update API for bpf_xdp_metadata_rx_hash() with arg for xdp rss hash type via mapping table. The mlx5 hardware can also identify and RSS hash IPSEC. This indicate hash includes SPI (Security Parameters Index) as part of IPSEC hash. Extend xdp core enum xdp_rss_hash_type with IPSEC hash type. Fixes: bc8d405b1ba9 ("net/mlx5e: Support RX XDP metadata") Signed-off-by: Jesper Dangaard Brouer Acked-by: Toke Høiland-Jørgensen Acked-by: Stanislav Fomichev --- drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c | 60 ++++++++++++++++++++++ include/linux/mlx5/device.h | 14 ++++- include/net/xdp.h | 2 + 3 files changed, 73 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c index efe609f8e3aa..97ef1df94d50 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c @@ -34,6 +34,7 @@ #include #include "en/xdp.h" #include "en/params.h" +#include int mlx5e_xdp_max_mtu(struct mlx5e_params *params, struct mlx5e_xsk_param *xsk) { @@ -169,15 +170,72 @@ static int mlx5e_xdp_rx_timestamp(const struct xdp_md *ctx, u64 *timestamp) return 0; } +/* Mapping HW RSS Type bits CQE_RSS_HTYPE_IP + CQE_RSS_HTYPE_L4 into 4-bits*/ +#define RSS_TYPE_MAX_TABLE 16 /* 4-bits max 16 entries */ +#define RSS_L4 GENMASK(1, 0) +#define RSS_L3 GENMASK(3, 2) /* Same as CQE_RSS_HTYPE_IP */ + +/* Valid combinations of CQE_RSS_HTYPE_IP + CQE_RSS_HTYPE_L4 sorted numerical */ +enum mlx5_rss_hash_type { + RSS_TYPE_NO_HASH = (FIELD_PREP_CONST(RSS_L3, CQE_RSS_IP_NONE) | + FIELD_PREP_CONST(RSS_L4, CQE_RSS_L4_NONE)), + RSS_TYPE_L3_IPV4 = (FIELD_PREP_CONST(RSS_L3, CQE_RSS_IPV4) | + FIELD_PREP_CONST(RSS_L4, CQE_RSS_L4_NONE)), + RSS_TYPE_L4_IPV4_TCP = (FIELD_PREP_CONST(RSS_L3, CQE_RSS_IPV4) | + FIELD_PREP_CONST(RSS_L4, CQE_RSS_L4_TCP)), + RSS_TYPE_L4_IPV4_UDP = (FIELD_PREP_CONST(RSS_L3, CQE_RSS_IPV4) | + FIELD_PREP_CONST(RSS_L4, CQE_RSS_L4_UDP)), + RSS_TYPE_L4_IPV4_IPSEC = (FIELD_PREP_CONST(RSS_L3, CQE_RSS_IPV4) | + FIELD_PREP_CONST(RSS_L4, CQE_RSS_L4_IPSEC)), + RSS_TYPE_L3_IPV6 = (FIELD_PREP_CONST(RSS_L3, CQE_RSS_IPV6) | + FIELD_PREP_CONST(RSS_L4, CQE_RSS_L4_NONE)), + RSS_TYPE_L4_IPV6_TCP = (FIELD_PREP_CONST(RSS_L3, CQE_RSS_IPV6) | + FIELD_PREP_CONST(RSS_L4, CQE_RSS_L4_TCP)), + RSS_TYPE_L4_IPV6_UDP = (FIELD_PREP_CONST(RSS_L3, CQE_RSS_IPV6) | + FIELD_PREP_CONST(RSS_L4, CQE_RSS_L4_UDP)), + RSS_TYPE_L4_IPV6_IPSEC = (FIELD_PREP_CONST(RSS_L3, CQE_RSS_IPV6) | + FIELD_PREP_CONST(RSS_L4, CQE_RSS_L4_IPSEC)), +} mlx5_rss_hash_type; + +/* Invalid combinations will simply return zero, allows no boundary checks */ +static const enum xdp_rss_hash_type mlx5_xdp_rss_type[RSS_TYPE_MAX_TABLE] = { + [RSS_TYPE_NO_HASH] = XDP_RSS_TYPE_NONE, + [1] = XDP_RSS_TYPE_NONE, /* Implicit zero */ + [2] = XDP_RSS_TYPE_NONE, /* Implicit zero */ + [3] = XDP_RSS_TYPE_NONE, /* Implicit zero */ + [RSS_TYPE_L3_IPV4] = XDP_RSS_TYPE_L3_IPV4, + [RSS_TYPE_L4_IPV4_TCP] = XDP_RSS_TYPE_L4_IPV4_TCP, + [RSS_TYPE_L4_IPV4_UDP] = XDP_RSS_TYPE_L4_IPV4_UDP, + [RSS_TYPE_L4_IPV4_IPSEC] = XDP_RSS_TYPE_L4_IPV4_IPSEC, + [RSS_TYPE_L3_IPV6] = XDP_RSS_TYPE_L3_IPV6, + [RSS_TYPE_L4_IPV6_TCP] = XDP_RSS_TYPE_L4_IPV6_TCP, + [RSS_TYPE_L4_IPV6_UDP] = XDP_RSS_TYPE_L4_IPV6_UDP, + [RSS_TYPE_L4_IPV6_IPSEC] = XDP_RSS_TYPE_L4_IPV6_IPSEC, + [12] = XDP_RSS_TYPE_NONE, /* Implicit zero */ + [13] = XDP_RSS_TYPE_NONE, /* Implicit zero */ + [14] = XDP_RSS_TYPE_NONE, /* Implicit zero */ + [15] = XDP_RSS_TYPE_NONE, /* Implicit zero */ +}; + static int mlx5e_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash, enum xdp_rss_hash_type *rss_type) { const struct mlx5e_xdp_buff *_ctx = (void *)ctx; + const struct mlx5_cqe64 *cqe = _ctx->cqe; + u32 hash_type, l4_type, ip_type, lookup; if (unlikely(!(_ctx->xdp.rxq->dev->features & NETIF_F_RXHASH))) return -ENODATA; - *hash = be32_to_cpu(_ctx->cqe->rss_hash_result); + *hash = be32_to_cpu(cqe->rss_hash_result); + + hash_type = cqe->rss_hash_type; + BUILD_BUG_ON(CQE_RSS_HTYPE_IP != RSS_L3); /* same mask */ + ip_type = hash_type & CQE_RSS_HTYPE_IP; + l4_type = FIELD_GET(CQE_RSS_HTYPE_L4, hash_type); + lookup = ip_type | l4_type; + *rss_type = mlx5_xdp_rss_type[lookup]; + return 0; } diff --git a/include/linux/mlx5/device.h b/include/linux/mlx5/device.h index 71b06ebad402..1db19a9d26e3 100644 --- a/include/linux/mlx5/device.h +++ b/include/linux/mlx5/device.h @@ -36,6 +36,7 @@ #include #include #include +#include #if defined(__LITTLE_ENDIAN) #define MLX5_SET_HOST_ENDIANNESS 0 @@ -980,14 +981,23 @@ enum { }; enum { - CQE_RSS_HTYPE_IP = 0x3 << 2, + CQE_RSS_HTYPE_IP = GENMASK(3, 2), /* cqe->rss_hash_type[3:2] - IP destination selected for hash * (00 = none, 01 = IPv4, 10 = IPv6, 11 = Reserved) */ - CQE_RSS_HTYPE_L4 = 0x3 << 6, + CQE_RSS_IP_NONE = 0x0, + CQE_RSS_IPV4 = 0x1, + CQE_RSS_IPV6 = 0x2, + CQE_RSS_RESERVED = 0x3, + + CQE_RSS_HTYPE_L4 = GENMASK(7, 6), /* cqe->rss_hash_type[7:6] - L4 destination selected for hash * (00 = none, 01 = TCP. 10 = UDP, 11 = IPSEC.SPI */ + CQE_RSS_L4_NONE = 0x0, + CQE_RSS_L4_TCP = 0x1, + CQE_RSS_L4_UDP = 0x2, + CQE_RSS_L4_IPSEC = 0x3, }; enum { diff --git a/include/net/xdp.h b/include/net/xdp.h index a76c4ea203ea..76aa748e7923 100644 --- a/include/net/xdp.h +++ b/include/net/xdp.h @@ -460,10 +460,12 @@ enum xdp_rss_hash_type { XDP_RSS_TYPE_L4_IPV4_TCP = XDP_RSS_L3_IPV4 | XDP_RSS_L4 | XDP_RSS_L4_TCP, XDP_RSS_TYPE_L4_IPV4_UDP = XDP_RSS_L3_IPV4 | XDP_RSS_L4 | XDP_RSS_L4_UDP, XDP_RSS_TYPE_L4_IPV4_SCTP = XDP_RSS_L3_IPV4 | XDP_RSS_L4 | XDP_RSS_L4_SCTP, + XDP_RSS_TYPE_L4_IPV4_IPSEC = XDP_RSS_L3_IPV4 | XDP_RSS_L4 | XDP_RSS_L4_IPSEC, XDP_RSS_TYPE_L4_IPV6_TCP = XDP_RSS_L3_IPV6 | XDP_RSS_L4 | XDP_RSS_L4_TCP, XDP_RSS_TYPE_L4_IPV6_UDP = XDP_RSS_L3_IPV6 | XDP_RSS_L4 | XDP_RSS_L4_UDP, XDP_RSS_TYPE_L4_IPV6_SCTP = XDP_RSS_L3_IPV6 | XDP_RSS_L4 | XDP_RSS_L4_SCTP, + XDP_RSS_TYPE_L4_IPV6_IPSEC = XDP_RSS_L3_IPV6 | XDP_RSS_L4 | XDP_RSS_L4_IPSEC, XDP_RSS_TYPE_L4_IPV6_TCP_EX = XDP_RSS_TYPE_L4_IPV6_TCP | XDP_RSS_L3_DYNHDR, XDP_RSS_TYPE_L4_IPV6_UDP_EX = XDP_RSS_TYPE_L4_IPV6_UDP | XDP_RSS_L3_DYNHDR, From patchwork Sun Apr 2 08:29:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jesper Dangaard Brouer X-Patchwork-Id: 13197293 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D57EBC77B60 for ; Sun, 2 Apr 2023 08:31:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230309AbjDBIb3 (ORCPT ); Sun, 2 Apr 2023 04:31:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50228 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230289AbjDBIbW (ORCPT ); Sun, 2 Apr 2023 04:31:22 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E2B551A443 for ; Sun, 2 Apr 2023 01:30:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; 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Sun, 2 Apr 2023 08:29:54 +0000 (UTC) Received: from firesoul.localdomain (unknown [10.45.242.12]) by smtp.corp.redhat.com (Postfix) with ESMTP id 4463640C83AC; Sun, 2 Apr 2023 08:29:54 +0000 (UTC) Received: from [10.1.1.1] (localhost [IPv6:::1]) by firesoul.localdomain (Postfix) with ESMTP id 5A44130736C72; Sun, 2 Apr 2023 10:29:53 +0200 (CEST) Subject: [PATCH bpf V6 3/5] veth: bpf_xdp_metadata_rx_hash add xdp rss hash type From: Jesper Dangaard Brouer To: bpf@vger.kernel.org, Stanislav Fomichev , =?utf-8?q?Toke?= =?utf-8?q?_H=C3=B8iland-J=C3=B8rgensen?= Cc: Jesper Dangaard Brouer , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, martin.lau@kernel.org, ast@kernel.org, daniel@iogearbox.net, alexandr.lobakin@intel.com, larysa.zaremba@intel.com, xdp-hints@xdp-project.net, anthony.l.nguyen@intel.com, yoong.siang.song@intel.com, boon.leong.ong@intel.com, intel-wired-lan@lists.osuosl.org, pabeni@redhat.com, jesse.brandeburg@intel.com, kuba@kernel.org, edumazet@google.com, john.fastabend@gmail.com, hawk@kernel.org, davem@davemloft.net, tariqt@nvidia.com, saeedm@nvidia.com, leon@kernel.org, linux-rdma@vger.kernel.org Date: Sun, 02 Apr 2023 10:29:53 +0200 Message-ID: <168042419332.4051476.17228291696653637770.stgit@firesoul> In-Reply-To: <168042409059.4051476.8176861613304493950.stgit@firesoul> References: <168042409059.4051476.8176861613304493950.stgit@firesoul> User-Agent: StGit/1.4 MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.1 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org Update API for bpf_xdp_metadata_rx_hash() with arg for xdp rss hash type. The veth driver currently only support XDP-hints based on SKB code path. The SKB have lost information about the RSS hash type, by compressing the information down to a single bitfield skb->l4_hash, that only knows if this was a L4 hash value. In preparation for veth, the xdp_rss_hash_type have an L4 indication bit that allow us to return a meaningful L4 indication when working with SKB based packets. Fixes: 306531f0249f ("veth: Support RX XDP metadata") Signed-off-by: Jesper Dangaard Brouer Acked-by: Toke Høiland-Jørgensen Acked-by: Stanislav Fomichev --- drivers/net/veth.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/net/veth.c b/drivers/net/veth.c index 424e8876a16b..e1b38fbf1dd9 100644 --- a/drivers/net/veth.c +++ b/drivers/net/veth.c @@ -1652,11 +1652,14 @@ static int veth_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash, enum xdp_rss_hash_type *rss_type) { struct veth_xdp_buff *_ctx = (void *)ctx; + struct sk_buff *skb = _ctx->skb; - if (!_ctx->skb) + if (!skb) return -ENODATA; - *hash = skb_get_hash(_ctx->skb); + *hash = skb_get_hash(skb); + *rss_type = skb->l4_hash ? XDP_RSS_TYPE_L4_ANY : XDP_RSS_TYPE_NONE; + return 0; } From patchwork Sun Apr 2 08:29:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jesper Dangaard Brouer X-Patchwork-Id: 13197294 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 61A93C77B60 for ; Sun, 2 Apr 2023 08:32:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230201AbjDBIcL (ORCPT ); Sun, 2 Apr 2023 04:32:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50178 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230299AbjDBIb7 (ORCPT ); Sun, 2 Apr 2023 04:31:59 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0B5EF1A952 for ; Sun, 2 Apr 2023 01:30:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1680424202; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=X2qMh1719XPTmN3fL+GQW8KuUqpmNliiESfRG6QrFt4=; b=CLN50PKlw4IMSBfR6xTTzPNlBxfomk+7x48PVOLlN0qo37yryl1cYfw7a79+h0lgeW58Ou QSy0BMB/SHNDWWwaARC3M5ZWSltSk6ofYbyo+/HH1p4Jxm1iS3TLB4oYBTKxrjzPvlwKl1 OOBwFd29OKsQZGP4PENxGOrF2hbgtcs= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-575-nGHAPBa7MTGybiLRF4_0rg-1; Sun, 02 Apr 2023 04:30:00 -0400 X-MC-Unique: nGHAPBa7MTGybiLRF4_0rg-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 9C5C229ABA07; Sun, 2 Apr 2023 08:29:59 +0000 (UTC) Received: from firesoul.localdomain (unknown [10.45.242.12]) by smtp.corp.redhat.com (Postfix) with ESMTP id 528AA1400E6D; Sun, 2 Apr 2023 08:29:59 +0000 (UTC) Received: from [10.1.1.1] (localhost [IPv6:::1]) by firesoul.localdomain (Postfix) with ESMTP id 6888B30736C72; Sun, 2 Apr 2023 10:29:58 +0200 (CEST) Subject: [PATCH bpf V6 4/5] mlx4: bpf_xdp_metadata_rx_hash add xdp rss hash type From: Jesper Dangaard Brouer To: bpf@vger.kernel.org, Stanislav Fomichev , =?utf-8?q?Toke?= =?utf-8?q?_H=C3=B8iland-J=C3=B8rgensen?= Cc: Jesper Dangaard Brouer , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, martin.lau@kernel.org, ast@kernel.org, daniel@iogearbox.net, alexandr.lobakin@intel.com, larysa.zaremba@intel.com, xdp-hints@xdp-project.net, anthony.l.nguyen@intel.com, yoong.siang.song@intel.com, boon.leong.ong@intel.com, intel-wired-lan@lists.osuosl.org, pabeni@redhat.com, jesse.brandeburg@intel.com, kuba@kernel.org, edumazet@google.com, john.fastabend@gmail.com, hawk@kernel.org, davem@davemloft.net, tariqt@nvidia.com, saeedm@nvidia.com, leon@kernel.org, linux-rdma@vger.kernel.org Date: Sun, 02 Apr 2023 10:29:58 +0200 Message-ID: <168042419838.4051476.9203995216212009644.stgit@firesoul> In-Reply-To: <168042409059.4051476.8176861613304493950.stgit@firesoul> References: <168042409059.4051476.8176861613304493950.stgit@firesoul> User-Agent: StGit/1.4 MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.7 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org Update API for bpf_xdp_metadata_rx_hash() with arg for xdp rss hash type via matching indiviual Completion Queue Entry (CQE) status bits. Fixes: ab46182d0dcb ("net/mlx4_en: Support RX XDP metadata") Signed-off-by: Jesper Dangaard Brouer Acked-by: Toke Høiland-Jørgensen Acked-by: Stanislav Fomichev --- drivers/net/ethernet/mellanox/mlx4/en_rx.c | 19 ++++++++++++++++++- drivers/net/ethernet/mellanox/mlx4/mlx4_en.h | 3 ++- 2 files changed, 20 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c index 73d10aa4c503..332472fe4990 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c @@ -685,11 +685,28 @@ int mlx4_en_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash, enum xdp_rss_hash_type *rss_type) { struct mlx4_en_xdp_buff *_ctx = (void *)ctx; + struct mlx4_cqe *cqe = _ctx->cqe; + enum xdp_rss_hash_type xht = 0; + __be16 status; if (unlikely(!(_ctx->dev->features & NETIF_F_RXHASH))) return -ENODATA; - *hash = be32_to_cpu(_ctx->cqe->immed_rss_invalid); + *hash = be32_to_cpu(cqe->immed_rss_invalid); + status = cqe->status; + if (status & cpu_to_be16(MLX4_CQE_STATUS_TCP)) + xht = XDP_RSS_L4_TCP; + if (status & cpu_to_be16(MLX4_CQE_STATUS_UDP)) + xht = XDP_RSS_L4_UDP; + if (status & cpu_to_be16(MLX4_CQE_STATUS_IPV4 | MLX4_CQE_STATUS_IPV4F)) + xht |= XDP_RSS_L3_IPV4; + if (status & cpu_to_be16(MLX4_CQE_STATUS_IPV6)) { + xht |= XDP_RSS_L3_IPV6; + if (cqe->ipv6_ext_mask) + xht |= XDP_RSS_L3_DYNHDR; + } + *rss_type = xht; + return 0; } diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h index 544e09b97483..4ac4d883047b 100644 --- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h +++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h @@ -798,7 +798,8 @@ int mlx4_en_netdev_event(struct notifier_block *this, struct xdp_md; int mlx4_en_xdp_rx_timestamp(const struct xdp_md *ctx, u64 *timestamp); -int mlx4_en_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash); +int mlx4_en_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash, + enum xdp_rss_hash_type *rss_type); /* * Functions for time stamping From patchwork Sun Apr 2 08:30:03 2023 Content-Type: text/plain; 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Sun, 2 Apr 2023 08:30:04 +0000 (UTC) Received: from firesoul.localdomain (unknown [10.45.242.12]) by smtp.corp.redhat.com (Postfix) with ESMTP id 62DFF40C6EC4; Sun, 2 Apr 2023 08:30:04 +0000 (UTC) Received: from [10.1.1.1] (localhost [IPv6:::1]) by firesoul.localdomain (Postfix) with ESMTP id 77EA030736C72; Sun, 2 Apr 2023 10:30:03 +0200 (CEST) Subject: [PATCH bpf V6 5/5] selftests/bpf: Adjust bpf_xdp_metadata_rx_hash for new arg From: Jesper Dangaard Brouer To: bpf@vger.kernel.org, Stanislav Fomichev , =?utf-8?q?Toke?= =?utf-8?q?_H=C3=B8iland-J=C3=B8rgensen?= Cc: Jesper Dangaard Brouer , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, martin.lau@kernel.org, ast@kernel.org, daniel@iogearbox.net, alexandr.lobakin@intel.com, larysa.zaremba@intel.com, xdp-hints@xdp-project.net, anthony.l.nguyen@intel.com, yoong.siang.song@intel.com, boon.leong.ong@intel.com, intel-wired-lan@lists.osuosl.org, pabeni@redhat.com, jesse.brandeburg@intel.com, kuba@kernel.org, edumazet@google.com, john.fastabend@gmail.com, hawk@kernel.org, davem@davemloft.net, tariqt@nvidia.com, saeedm@nvidia.com, leon@kernel.org, linux-rdma@vger.kernel.org Date: Sun, 02 Apr 2023 10:30:03 +0200 Message-ID: <168042420344.4051476.9107061652824513113.stgit@firesoul> In-Reply-To: <168042409059.4051476.8176861613304493950.stgit@firesoul> References: <168042409059.4051476.8176861613304493950.stgit@firesoul> User-Agent: StGit/1.4 MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.2 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org Update BPF selftests to use the new RSS type argument for kfunc bpf_xdp_metadata_rx_hash. Signed-off-by: Jesper Dangaard Brouer Acked-by: Toke Høiland-Jørgensen Acked-by: Stanislav Fomichev --- .../selftests/bpf/prog_tests/xdp_metadata.c | 2 ++ .../testing/selftests/bpf/progs/xdp_hw_metadata.c | 14 +++++++++----- tools/testing/selftests/bpf/progs/xdp_metadata.c | 6 +++--- tools/testing/selftests/bpf/progs/xdp_metadata2.c | 7 ++++--- tools/testing/selftests/bpf/xdp_hw_metadata.c | 2 +- tools/testing/selftests/bpf/xdp_metadata.h | 1 + 6 files changed, 20 insertions(+), 12 deletions(-) diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_metadata.c b/tools/testing/selftests/bpf/prog_tests/xdp_metadata.c index aa4beae99f4f..8c5e98da9ae9 100644 --- a/tools/testing/selftests/bpf/prog_tests/xdp_metadata.c +++ b/tools/testing/selftests/bpf/prog_tests/xdp_metadata.c @@ -273,6 +273,8 @@ static int verify_xsk_metadata(struct xsk *xsk) if (!ASSERT_NEQ(meta->rx_hash, 0, "rx_hash")) return -1; + ASSERT_EQ(meta->rx_hash_type, 0, "rx_hash_type"); + xsk_ring_cons__release(&xsk->rx, 1); refill_rx(xsk, comp_addr); diff --git a/tools/testing/selftests/bpf/progs/xdp_hw_metadata.c b/tools/testing/selftests/bpf/progs/xdp_hw_metadata.c index 4c55b4d79d3d..7b3fc12e96d6 100644 --- a/tools/testing/selftests/bpf/progs/xdp_hw_metadata.c +++ b/tools/testing/selftests/bpf/progs/xdp_hw_metadata.c @@ -14,8 +14,8 @@ struct { extern int bpf_xdp_metadata_rx_timestamp(const struct xdp_md *ctx, __u64 *timestamp) __ksym; -extern int bpf_xdp_metadata_rx_hash(const struct xdp_md *ctx, - __u32 *hash) __ksym; +extern int bpf_xdp_metadata_rx_hash(const struct xdp_md *ctx, __u32 *hash, + enum xdp_rss_hash_type *rss_type) __ksym; SEC("xdp") int rx(struct xdp_md *ctx) @@ -74,10 +74,14 @@ int rx(struct xdp_md *ctx) else meta->rx_timestamp = 0; /* Used by AF_XDP as not avail signal */ - if (!bpf_xdp_metadata_rx_hash(ctx, &meta->rx_hash)) - bpf_printk("populated rx_hash with %u", meta->rx_hash); - else + if (!bpf_xdp_metadata_rx_hash(ctx, &meta->rx_hash, &meta->rx_hash_type)) { + bpf_printk("populated rx_hash:0x%X type:0x%X", + meta->rx_hash, meta->rx_hash_type); + if (!(meta->rx_hash_type & XDP_RSS_L4)) + bpf_printk("rx_hash low quality L3 hash type"); + } else { meta->rx_hash = 0; /* Used by AF_XDP as not avail signal */ + } return bpf_redirect_map(&xsk, ctx->rx_queue_index, XDP_PASS); } diff --git a/tools/testing/selftests/bpf/progs/xdp_metadata.c b/tools/testing/selftests/bpf/progs/xdp_metadata.c index 77678b034389..d151d406a123 100644 --- a/tools/testing/selftests/bpf/progs/xdp_metadata.c +++ b/tools/testing/selftests/bpf/progs/xdp_metadata.c @@ -21,8 +21,8 @@ struct { extern int bpf_xdp_metadata_rx_timestamp(const struct xdp_md *ctx, __u64 *timestamp) __ksym; -extern int bpf_xdp_metadata_rx_hash(const struct xdp_md *ctx, - __u32 *hash) __ksym; +extern int bpf_xdp_metadata_rx_hash(const struct xdp_md *ctx, __u32 *hash, + enum xdp_rss_hash_type *rss_type) __ksym; SEC("xdp") int rx(struct xdp_md *ctx) @@ -56,7 +56,7 @@ int rx(struct xdp_md *ctx) if (timestamp == 0) meta->rx_timestamp = 1; - bpf_xdp_metadata_rx_hash(ctx, &meta->rx_hash); + bpf_xdp_metadata_rx_hash(ctx, &meta->rx_hash, &meta->rx_hash_type); return bpf_redirect_map(&xsk, ctx->rx_queue_index, XDP_PASS); } diff --git a/tools/testing/selftests/bpf/progs/xdp_metadata2.c b/tools/testing/selftests/bpf/progs/xdp_metadata2.c index cf69d05451c3..85f88d9d7a78 100644 --- a/tools/testing/selftests/bpf/progs/xdp_metadata2.c +++ b/tools/testing/selftests/bpf/progs/xdp_metadata2.c @@ -5,17 +5,18 @@ #include #include -extern int bpf_xdp_metadata_rx_hash(const struct xdp_md *ctx, - __u32 *hash) __ksym; +extern int bpf_xdp_metadata_rx_hash(const struct xdp_md *ctx, __u32 *hash, + enum xdp_rss_hash_type *rss_type) __ksym; int called; SEC("freplace/rx") int freplace_rx(struct xdp_md *ctx) { + enum xdp_rss_hash_type type = 0; u32 hash = 0; /* Call _any_ metadata function to make sure we don't crash. */ - bpf_xdp_metadata_rx_hash(ctx, &hash); + bpf_xdp_metadata_rx_hash(ctx, &hash, &type); called++; return XDP_PASS; } diff --git a/tools/testing/selftests/bpf/xdp_hw_metadata.c b/tools/testing/selftests/bpf/xdp_hw_metadata.c index 1c8acb68b977..4ca29e0c9646 100644 --- a/tools/testing/selftests/bpf/xdp_hw_metadata.c +++ b/tools/testing/selftests/bpf/xdp_hw_metadata.c @@ -141,7 +141,7 @@ static void verify_xdp_metadata(void *data) meta = data - sizeof(*meta); printf("rx_timestamp: %llu\n", meta->rx_timestamp); - printf("rx_hash: %u\n", meta->rx_hash); + printf("rx_hash: 0x%X RSS type:0x%X\n", meta->rx_hash, meta->rx_hash_type); } static void verify_skb_metadata(int fd) diff --git a/tools/testing/selftests/bpf/xdp_metadata.h b/tools/testing/selftests/bpf/xdp_metadata.h index f6780fbb0a21..899da872fee1 100644 --- a/tools/testing/selftests/bpf/xdp_metadata.h +++ b/tools/testing/selftests/bpf/xdp_metadata.h @@ -12,4 +12,5 @@ struct xdp_meta { __u64 rx_timestamp; __u32 rx_hash; + __u32 rx_hash_type; };