From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.88]) by mail.toke.dk (Postfix) with ESMTPS id 38399A309AC for ; Thu, 12 Oct 2023 19:12:57 +0200 (CEST) Authentication-Results: mail.toke.dk; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=fO4bZ/v3 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1697130777; x=1728666777; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=SN9KZp2m1u50+QHgQJBopd6JnFHCkhMBU7OyxJifkaw=; b=fO4bZ/v3rx4cqA8sLOs6eG5pXNzmIuH2zu/8su92G5HTDKkHPZZUcKVE UkSCoIaEdnyUQlPib3e+zqZ9XJBRHDspcCiq7nYs8sVIeeG4pq4WUWYyG 42HmkropcEasUJT+fmsOQaOqA0VwapJAXusX9p1/WoccADrQRn/b6R3y+ plfmgZQSBq/l9i8ZtJ1SXH8yJl+L97Efk16pe60BYHWtnTetEpnBibSiM ow378GgMSZfQ9ivbMf9Kin1qDAgHp/AamKbQuRwkrcv/l14r+VGhrmsqR IU3wBDxdCmpdcT5T0Vn3Whd6lA8+sV0lLlyNVEWdybevdCE5nyE08Yz9W w==; X-IronPort-AV: E=McAfee;i="6600,9927,10861"; a="416027733" X-IronPort-AV: E=Sophos;i="6.03,219,1694761200"; d="scan'208";a="416027733" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Oct 2023 10:12:24 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10861"; a="783774066" X-IronPort-AV: E=Sophos;i="6.03,219,1694761200"; d="scan'208";a="783774066" Received: from irvmail002.ir.intel.com ([10.43.11.120]) by orsmga008.jf.intel.com with ESMTP; 12 Oct 2023 10:12:14 -0700 Received: from lincoln.igk.intel.com (lincoln.igk.intel.com [10.102.21.235]) by irvmail002.ir.intel.com (Postfix) with ESMTP id 8B35733E8C; Thu, 12 Oct 2023 18:12:11 +0100 (IST) From: Larysa Zaremba To: bpf@vger.kernel.org Date: Thu, 12 Oct 2023 19:05:15 +0200 Message-ID: <20231012170524.21085-10-larysa.zaremba@intel.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231012170524.21085-1-larysa.zaremba@intel.com> References: <20231012170524.21085-1-larysa.zaremba@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Message-ID-Hash: CEOZ5BSNGJAJZ5DQB62PKNSRYPCF2ENK X-Message-ID-Hash: CEOZ5BSNGJAJZ5DQB62PKNSRYPCF2ENK X-MailFrom: larysa.zaremba@intel.com X-Mailman-Rule-Hits: member-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address CC: Larysa Zaremba , ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, martin.lau@linux.dev, song@kernel.org, yhs@fb.com, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com, haoluo@google.com, jolsa@kernel.org, David Ahern , Jakub Kicinski , Willem de Bruijn , Jesper Dangaard Brouer , Anatoly Burakov , Alexander Lobakin , Magnus Karlsson , Maryam Tahhan , xdp-hints@xdp-project.net, netdev@vger.kernel.org, Willem de Bruijn , Alexei Starovoitov , Simon Horman , Tariq Toukan , Saeed Mahameed , Maciej Fijalkowski X-Mailman-Version: 3.3.8 Precedence: list Subject: [xdp-hints] [PATCH bpf-next v6 09/18] ice: Implement VLAN tag hint List-Id: XDP hardware hints design discussion Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Implement .xmo_rx_vlan_tag callback to allow XDP code to read packet's VLAN tag. At the same time, use vlan_tci instead of vlan_tag in touched code, because VLAN tag often refers to VLAN proto and VLAN TCI combined, while in the code we clearly store only VLAN TCI. Signed-off-by: Larysa Zaremba --- drivers/net/ethernet/intel/ice/ice_main.c | 20 ++++++++++++++ drivers/net/ethernet/intel/ice/ice_txrx.c | 6 ++--- drivers/net/ethernet/intel/ice/ice_txrx.h | 1 + drivers/net/ethernet/intel/ice/ice_txrx_lib.c | 26 +++++++++++++++++++ drivers/net/ethernet/intel/ice/ice_txrx_lib.h | 4 +-- drivers/net/ethernet/intel/ice/ice_xsk.c | 6 ++--- 6 files changed, 55 insertions(+), 8 deletions(-) diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c index 2153e27642eb..47e8920e1727 100644 --- a/drivers/net/ethernet/intel/ice/ice_main.c +++ b/drivers/net/ethernet/intel/ice/ice_main.c @@ -6014,6 +6014,23 @@ ice_fix_features(struct net_device *netdev, netdev_features_t features) return features; } +/** + * ice_set_rx_rings_vlan_proto - update rings with new stripped VLAN proto + * @vsi: PF's VSI + * @vlan_ethertype: VLAN ethertype (802.1Q or 802.1ad) in network byte order + * + * Store current stripped VLAN proto in ring packet context, + * so it can be accessed more efficiently by packet processing code. + */ +static void +ice_set_rx_rings_vlan_proto(struct ice_vsi *vsi, __be16 vlan_ethertype) +{ + u16 i; + + ice_for_each_alloc_rxq(vsi, i) + vsi->rx_rings[i]->pkt_ctx.vlan_proto = vlan_ethertype; +} + /** * ice_set_vlan_offload_features - set VLAN offload features for the PF VSI * @vsi: PF's VSI @@ -6056,6 +6073,9 @@ ice_set_vlan_offload_features(struct ice_vsi *vsi, netdev_features_t features) if (strip_err || insert_err) return -EIO; + ice_set_rx_rings_vlan_proto(vsi, enable_stripping ? + htons(vlan_ethertype) : 0); + return 0; } diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.c b/drivers/net/ethernet/intel/ice/ice_txrx.c index 4e6546d9cf85..4fd7614f243d 100644 --- a/drivers/net/ethernet/intel/ice/ice_txrx.c +++ b/drivers/net/ethernet/intel/ice/ice_txrx.c @@ -1183,7 +1183,7 @@ int ice_clean_rx_irq(struct ice_rx_ring *rx_ring, int budget) struct sk_buff *skb; unsigned int size; u16 stat_err_bits; - u16 vlan_tag = 0; + u16 vlan_tci; /* get the Rx desc from Rx ring based on 'next_to_clean' */ rx_desc = ICE_RX_DESC(rx_ring, ntc); @@ -1278,7 +1278,7 @@ int ice_clean_rx_irq(struct ice_rx_ring *rx_ring, int budget) continue; } - vlan_tag = ice_get_vlan_tag_from_rx_desc(rx_desc); + vlan_tci = ice_get_vlan_tci(rx_desc); /* pad the skb if needed, to make a valid ethernet frame */ if (eth_skb_pad(skb)) @@ -1292,7 +1292,7 @@ int ice_clean_rx_irq(struct ice_rx_ring *rx_ring, int budget) ice_trace(clean_rx_irq_indicate, rx_ring, rx_desc, skb); /* send completed skb up the stack */ - ice_receive_skb(rx_ring, skb, vlan_tag); + ice_receive_skb(rx_ring, skb, vlan_tci); /* update budget accounting */ total_rx_pkts++; diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.h b/drivers/net/ethernet/intel/ice/ice_txrx.h index 4237702a58a9..41e0b14e6643 100644 --- a/drivers/net/ethernet/intel/ice/ice_txrx.h +++ b/drivers/net/ethernet/intel/ice/ice_txrx.h @@ -260,6 +260,7 @@ enum ice_rx_dtype { struct ice_pkt_ctx { const union ice_32b_rx_flex_desc *eop_desc; u64 cached_phctime; + __be16 vlan_proto; }; struct ice_xdp_buff { diff --git a/drivers/net/ethernet/intel/ice/ice_txrx_lib.c b/drivers/net/ethernet/intel/ice/ice_txrx_lib.c index 079b0c18047b..b72d0a943e6f 100644 --- a/drivers/net/ethernet/intel/ice/ice_txrx_lib.c +++ b/drivers/net/ethernet/intel/ice/ice_txrx_lib.c @@ -601,7 +601,33 @@ static int ice_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash, return 0; } +/** + * ice_xdp_rx_vlan_tag - VLAN tag XDP hint handler + * @ctx: XDP buff pointer + * @vlan_proto: destination address for VLAN protocol + * @vlan_tci: destination address for VLAN TCI + * + * Copy VLAN tag (if was stripped) and corresponding protocol + * to the destination address. + */ +static int ice_xdp_rx_vlan_tag(const struct xdp_md *ctx, __be16 *vlan_proto, + u16 *vlan_tci) +{ + const struct ice_xdp_buff *xdp_ext = (void *)ctx; + + *vlan_proto = xdp_ext->pkt_ctx.vlan_proto; + if (!*vlan_proto) + return -ENODATA; + + *vlan_tci = ice_get_vlan_tci(xdp_ext->pkt_ctx.eop_desc); + if (!*vlan_tci) + return -ENODATA; + + return 0; +} + const struct xdp_metadata_ops ice_xdp_md_ops = { .xmo_rx_timestamp = ice_xdp_rx_hw_ts, .xmo_rx_hash = ice_xdp_rx_hash, + .xmo_rx_vlan_tag = ice_xdp_rx_vlan_tag, }; diff --git a/drivers/net/ethernet/intel/ice/ice_txrx_lib.h b/drivers/net/ethernet/intel/ice/ice_txrx_lib.h index 145883eec129..b7205826fea8 100644 --- a/drivers/net/ethernet/intel/ice/ice_txrx_lib.h +++ b/drivers/net/ethernet/intel/ice/ice_txrx_lib.h @@ -84,7 +84,7 @@ ice_build_ctob(u64 td_cmd, u64 td_offset, unsigned int size, u64 td_tag) } /** - * ice_get_vlan_tag_from_rx_desc - get VLAN from Rx flex descriptor + * ice_get_vlan_tci - get VLAN TCI from Rx flex descriptor * @rx_desc: Rx 32b flex descriptor with RXDID=2 * * The OS and current PF implementation only support stripping a single VLAN tag @@ -92,7 +92,7 @@ ice_build_ctob(u64 td_cmd, u64 td_offset, unsigned int size, u64 td_tag) * one is found return the tag, else return 0 to mean no VLAN tag was found. */ static inline u16 -ice_get_vlan_tag_from_rx_desc(union ice_32b_rx_flex_desc *rx_desc) +ice_get_vlan_tci(const union ice_32b_rx_flex_desc *rx_desc) { u16 stat_err_bits; diff --git a/drivers/net/ethernet/intel/ice/ice_xsk.c b/drivers/net/ethernet/intel/ice/ice_xsk.c index 6ca620b2fbdd..39775bb6cec1 100644 --- a/drivers/net/ethernet/intel/ice/ice_xsk.c +++ b/drivers/net/ethernet/intel/ice/ice_xsk.c @@ -898,7 +898,7 @@ int ice_clean_rx_irq_zc(struct ice_rx_ring *rx_ring, int budget) struct xdp_buff *xdp; struct sk_buff *skb; u16 stat_err_bits; - u16 vlan_tag = 0; + u16 vlan_tci; rx_desc = ICE_RX_DESC(rx_ring, ntc); @@ -977,10 +977,10 @@ int ice_clean_rx_irq_zc(struct ice_rx_ring *rx_ring, int budget) total_rx_bytes += skb->len; total_rx_packets++; - vlan_tag = ice_get_vlan_tag_from_rx_desc(rx_desc); + vlan_tci = ice_get_vlan_tci(rx_desc); ice_process_skb_fields(rx_ring, rx_desc, skb); - ice_receive_skb(rx_ring, skb, vlan_tag); + ice_receive_skb(rx_ring, skb, vlan_tci); } rx_ring->next_to_clean = ntc; -- 2.41.0