From mboxrd@z Thu Jan 1 00:00:00 1970 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 795BCC001E0 for ; Tue, 1 Aug 2023 09:45:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233587AbjHAJp1 (ORCPT ); Tue, 1 Aug 2023 05:45:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45638 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233584AbjHAJpK (ORCPT ); Tue, 1 Aug 2023 05:45:10 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B82061FC9 for ; Tue, 1 Aug 2023 02:43:31 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 38425614F3 for ; Tue, 1 Aug 2023 09:43:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4B885C433C8; Tue, 1 Aug 2023 09:43:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1690883010; bh=I/dCVCOy77eC5j0u8S+/JPAs1oSzQZNWnRRmdoVnzZI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=M9AFLGhUWtg1/sjp1oQNeagRhXpSHA2N28fGeW44yZh/ci9kMNpklMfBUpkOGuhp3 ZLz5W2iEdPx5Mxs3FWxnxwf+2pFoUTWyesAcW+8izZ3qq6h3Nd6n8oFAqtZSqq3kFU jD24vflAOxIMh4QOF5p+b5fdJyANc6KQMaoWzPxo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Suman Ghosh , Simon Horman , Paolo Abeni , Sasha Levin Subject: [PATCH 6.4 082/239] octeontx2-af: Fix hash extraction enable configuration Date: Tue, 1 Aug 2023 11:19:06 +0200 Message-ID: <20230801091928.703902793@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230801091925.659598007@linuxfoundation.org> References: <20230801091925.659598007@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Suman Ghosh [ Upstream commit 4e62c99d71e56817c934caa2a709a775c8cee078 ] As of today, hash extraction support is enabled for all the silicons. Because of which we are facing initialization issues when the silicon does not support hash extraction. During creation of the hardware parsing table for IPv6 address, we need to consider if hash extraction is enabled then extract only 32 bit, otherwise 128 bit needs to be extracted. This patch fixes the issue and configures the hardware parser based on the availability of the feature. Fixes: a95ab93550d3 ("octeontx2-af: Use hashed field in MCAM key") Signed-off-by: Suman Ghosh Reviewed-by: Simon Horman Link: https://lore.kernel.org/r/20230721061222.2632521-1-sumang@marvell.com Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin --- .../marvell/octeontx2/af/rvu_npc_hash.c | 43 ++++++++++++++++++- .../marvell/octeontx2/af/rvu_npc_hash.h | 8 ++-- 2 files changed, 46 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c index 6fe67f3a7f6f1..7e20282c12d00 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c @@ -218,13 +218,54 @@ void npc_config_secret_key(struct rvu *rvu, int blkaddr) void npc_program_mkex_hash(struct rvu *rvu, int blkaddr) { + struct npc_mcam_kex_hash *mh = rvu->kpu.mkex_hash; struct hw_cap *hwcap = &rvu->hw->cap; + u8 intf, ld, hdr_offset, byte_len; struct rvu_hwinfo *hw = rvu->hw; - u8 intf; + u64 cfg; + /* Check if hardware supports hash extraction */ if (!hwcap->npc_hash_extract) return; + /* Check if IPv6 source/destination address + * should be hash enabled. + * Hashing reduces 128bit SIP/DIP fields to 32bit + * so that 224 bit X2 key can be used for IPv6 based filters as well, + * which in turn results in more number of MCAM entries available for + * use. + * + * Hashing of IPV6 SIP/DIP is enabled in below scenarios + * 1. If the silicon variant supports hashing feature + * 2. If the number of bytes of IP addr being extracted is 4 bytes ie + * 32bit. The assumption here is that if user wants 8bytes of LSB of + * IP addr or full 16 bytes then his intention is not to use 32bit + * hash. + */ + for (intf = 0; intf < hw->npc_intfs; intf++) { + for (ld = 0; ld < NPC_MAX_LD; ld++) { + cfg = rvu_read64(rvu, blkaddr, + NPC_AF_INTFX_LIDX_LTX_LDX_CFG(intf, + NPC_LID_LC, + NPC_LT_LC_IP6, + ld)); + hdr_offset = FIELD_GET(NPC_HDR_OFFSET, cfg); + byte_len = FIELD_GET(NPC_BYTESM, cfg); + /* Hashing of IPv6 source/destination address should be + * enabled if, + * hdr_offset == 8 (offset of source IPv6 address) or + * hdr_offset == 24 (offset of destination IPv6) + * address) and the number of byte to be + * extracted is 4. As per hardware configuration + * byte_len should be == actual byte_len - 1. + * Hence byte_len is checked against 3 but nor 4. + */ + if ((hdr_offset == 8 || hdr_offset == 24) && byte_len == 3) + mh->lid_lt_ld_hash_en[intf][NPC_LID_LC][NPC_LT_LC_IP6][ld] = true; + } + } + + /* Update hash configuration if the field is hash enabled */ for (intf = 0; intf < hw->npc_intfs; intf++) { npc_program_mkex_hash_rx(rvu, blkaddr, intf); npc_program_mkex_hash_tx(rvu, blkaddr, intf); diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.h index a1c3d987b8044..57a09328d46b5 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.h +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.h @@ -70,8 +70,8 @@ static struct npc_mcam_kex_hash npc_mkex_hash_default __maybe_unused = { [NIX_INTF_RX] = { [NPC_LID_LC] = { [NPC_LT_LC_IP6] = { - true, - true, + false, + false, }, }, }, @@ -79,8 +79,8 @@ static struct npc_mcam_kex_hash npc_mkex_hash_default __maybe_unused = { [NIX_INTF_TX] = { [NPC_LID_LC] = { [NPC_LT_LC_IP6] = { - true, - true, + false, + false, }, }, }, -- 2.39.2