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(unknown [10.28.36.165]) by maili.marvell.com (Postfix) with ESMTP id 100A23F7044; Thu, 23 Apr 2026 03:43:42 -0700 (PDT) From: Ratheesh Kannoth To: , CC: , , , , , , "Ratheesh Kannoth" , Suman Ghosh Subject: [PATCH v3 net 06/11] octeontx2-af: npc: cn20k: Clear MCAM entries by index and key width Date: Thu, 23 Apr 2026 16:13:12 +0530 Message-ID: <20260423104317.2707923-7-rkannoth@marvell.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260423104317.2707923-1-rkannoth@marvell.com> References: <20260423104317.2707923-1-rkannoth@marvell.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Proofpoint-ORIG-GUID: SJD5zbWfNDuz611sbcGAa4aOvojARhvQ X-Proofpoint-GUID: SJD5zbWfNDuz611sbcGAa4aOvojARhvQ X-Authority-Analysis: v=2.4 cv=ecoNubEH c=1 sm=1 tr=0 ts=69e9f7f0 cx=c_pps a=rEv8fa4AjpPjGxpoe8rlIQ==:117 a=rEv8fa4AjpPjGxpoe8rlIQ==:17 a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=l0iWHRpgs5sLHlkKQ1IR:22 a=EAYMVhzMl8SCOHhVQcBL:22 a=M5GUcnROAAAA:8 a=Te6SKzNpAKJ10Xq2tLIA:9 a=OBjm3rFKGHvpk9ecZwUJ:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDIzMDEwNSBTYWx0ZWRfX7EbLrwHQGU1f EGJV3GXK4NaQD5BUtal8SvA5RM9JR9JRROsUJOWT1ZEBRTbxDNTEW+7e1CNmXG8f8M0nsj82/SK 3Vk0jwhgFmpTHEgYQ4XX+XejFGE1jwmKZVn2at0vL6pJ3jtBCZj2XxY2y8Zh6z/y4v+Yo5fljEb jiNdAHjt4GvCHeDAVRQF97AuAro2xH3eg/yC+XZL4F0043vURRaSkAKDFqSnBFGvul11jRmEKQ8 ukYtpMxsW5Nx7Ib2yCAMLSQJXcdsImAx0PWmbxlYFXf6SjrJXG0Z1L3WNomxp49NKo6qChppoJP plSZGCmYNrzTvnmWKlaiyZPVNlsGpQ2g3mKhKlEDPCoj5Me6X8UlBKl/vpMvj7mMLkwUFoUEz5h LzO+Vj88xf5u7/P5wCvGi5MNE++mMqxOibCjctvzqFrJ/dzLrHiF44hUV5PilhQCJ1GEpGIR6DV zlBYu0khFfennYkr7iw== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-23_02,2026-04-21_02,2025-10-01_01 Replace the old four-argument CN20K MCAM clear with a per-bank static helper and npc_cn20k_clear_mcam_entry() that takes a logical MCAM index, resolves the key width via npc_mcam_idx_2_key_type(), and clears either one bank (X2) or every bank (X4). Call it from npc_clear_mcam_entry() on cn20k and log when key-type lookup fails. Use the per-bank helper from npc_cn20k_config_mcam_entry() for pre-program clears. For loopback VFs, use the promisc MCAM index as ucast_idx when copying RSS action for promisc, matching cn20k default-rule layout. Cc: Suman Ghosh Fixes: 6d1e70282f76 ("octeontx2-af: npc: cn20k: Use common APIs") Signed-off-by: Ratheesh Kannoth --- .../ethernet/marvell/octeontx2/af/cn20k/npc.c | 37 ++++++++++++++++--- .../ethernet/marvell/octeontx2/af/cn20k/npc.h | 3 +- .../ethernet/marvell/octeontx2/af/rvu_npc.c | 17 ++++++++- 3 files changed, 48 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/marvell/octeontx2/af/cn20k/npc.c b/drivers/net/ethernet/marvell/octeontx2/af/cn20k/npc.c index 74dad164b6a9..9ded0763ad54 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/cn20k/npc.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/cn20k/npc.c @@ -842,8 +842,8 @@ npc_cn20k_enable_mcam_entry(struct rvu *rvu, int blkaddr, return 0; } -void -npc_cn20k_clear_mcam_entry(struct rvu *rvu, int blkaddr, int bank, int index) +static void +npc_clear_x2_entry(struct rvu *rvu, int blkaddr, int bank, int index) { rvu_write64(rvu, blkaddr, NPC_AF_CN20K_MCAMEX_BANKX_CAMX_INTF_EXT(index, bank, 1), @@ -877,6 +877,33 @@ npc_cn20k_clear_mcam_entry(struct rvu *rvu, int blkaddr, int bank, int index) NPC_AF_CN20K_MCAMEX_BANKX_STAT_EXT(index, bank), 0); } +int +npc_cn20k_clear_mcam_entry(struct rvu *rvu, int blkaddr, int mcam_idx) +{ + struct npc_mcam *mcam = &rvu->hw->mcam; + int bank = npc_get_bank(mcam, mcam_idx); + u8 kw_type; + int index; + + if (npc_mcam_idx_2_key_type(rvu, mcam_idx, &kw_type)) + return -EINVAL; + + index = mcam_idx & (mcam->banksize - 1); + + if (kw_type == NPC_MCAM_KEY_X2) { + npc_clear_x2_entry(rvu, blkaddr, bank, index); + return 0; + } + + /* For NPC_MCAM_KEY_X4 keys, both the banks + * need to be programmed with the same value. + */ + for (bank = 0; bank < mcam->banks_per_entry; bank++) + npc_clear_x2_entry(rvu, blkaddr, bank, index); + + return 0; +} + static void npc_cn20k_get_keyword(struct cn20k_mcam_entry *entry, int idx, u64 *cam0, u64 *cam1) { @@ -1071,7 +1098,7 @@ int npc_cn20k_config_mcam_entry(struct rvu *rvu, int blkaddr, int index, */ if (kw_type == NPC_MCAM_KEY_X2) { /* Clear mcam entry to avoid writes being suppressed by NPC */ - npc_cn20k_clear_mcam_entry(rvu, blkaddr, bank, mcam_idx); + npc_clear_x2_entry(rvu, blkaddr, bank, mcam_idx); npc_cn20k_config_kw_x2(rvu, mcam, blkaddr, mcam_idx, intf, entry, bank, kw_type, kw, req_kw_type); @@ -1096,8 +1123,8 @@ int npc_cn20k_config_mcam_entry(struct rvu *rvu, int blkaddr, int index, } /* Clear mcam entry to avoid writes being suppressed by NPC */ - npc_cn20k_clear_mcam_entry(rvu, blkaddr, 0, mcam_idx); - npc_cn20k_clear_mcam_entry(rvu, blkaddr, 1, mcam_idx); + npc_clear_x2_entry(rvu, blkaddr, 0, mcam_idx); + npc_clear_x2_entry(rvu, blkaddr, 1, mcam_idx); npc_cn20k_config_kw_x4(rvu, mcam, blkaddr, mcam_idx, intf, entry, diff --git a/drivers/net/ethernet/marvell/octeontx2/af/cn20k/npc.h b/drivers/net/ethernet/marvell/octeontx2/af/cn20k/npc.h index 8f3eea9cfb1d..2f761b97f91b 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/cn20k/npc.h +++ b/drivers/net/ethernet/marvell/octeontx2/af/cn20k/npc.h @@ -330,8 +330,7 @@ int npc_cn20k_copy_mcam_entry(struct rvu *rvu, int blkaddr, int npc_cn20k_read_mcam_entry(struct rvu *rvu, int blkaddr, u16 index, struct cn20k_mcam_entry *entry, u8 *intf, u8 *ena, u8 *hw_prio); -void npc_cn20k_clear_mcam_entry(struct rvu *rvu, int blkaddr, - int bank, int index); +int npc_cn20k_clear_mcam_entry(struct rvu *rvu, int blkaddr, int index); int npc_mcam_idx_2_key_type(struct rvu *rvu, u16 mcam_idx, u8 *key_type); u16 npc_cn20k_vidx2idx(u16 index); u16 npc_cn20k_idx2vidx(u16 idx); diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c index ecaf0946b852..44ca65efc80f 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c @@ -261,6 +261,13 @@ static void npc_clear_mcam_entry(struct rvu *rvu, struct npc_mcam *mcam, int bank = npc_get_bank(mcam, index); int actbank = bank; + if (is_cn20k(rvu->pdev)) { + if (npc_cn20k_clear_mcam_entry(rvu, blkaddr, index)) + dev_err(rvu->dev, "%s Failed to clear mcam %u\n", + __func__, index); + return; + } + index &= (mcam->banksize - 1); for (; bank < (actbank + mcam->banks_per_entry); bank++) { rvu_write64(rvu, blkaddr, @@ -755,9 +762,15 @@ void rvu_npc_install_promisc_entry(struct rvu *rvu, u16 pcifunc, /* If the corresponding PF's ucast action is RSS, * use the same action for promisc also + * Please note that for lbk(s) "index" and "ucast_idx" + * will be same. */ - ucast_idx = npc_get_nixlf_mcam_index(mcam, pcifunc, - nixlf, NIXLF_UCAST_ENTRY); + if (is_lbk_vf(rvu, pcifunc)) + ucast_idx = index; + else + ucast_idx = npc_get_nixlf_mcam_index(mcam, pcifunc, + nixlf, NIXLF_UCAST_ENTRY); + if (is_mcam_entry_enabled(rvu, mcam, blkaddr, ucast_idx)) *(u64 *)&action = npc_get_mcam_action(rvu, mcam, blkaddr, ucast_idx); -- 2.43.0