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(unknown [10.28.34.196]) by maili.marvell.com (Postfix) with ESMTP id 5EA6B5C68E3; Tue, 5 Nov 2024 04:56:32 -0800 (PST) From: Linu Cherian To: , , , CC: , , , , , , , Linu Cherian Subject: [PATCH v5 net-next 2/3] octeontx2-af: Knobs for NPC default rule counters Date: Tue, 5 Nov 2024 18:26:19 +0530 Message-ID: <20241105125620.2114301-3-lcherian@marvell.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241105125620.2114301-1-lcherian@marvell.com> References: <20241105125620.2114301-1-lcherian@marvell.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-GUID: E5MsFUr0gmHumoib0omjezhclWBR1zv_ X-Proofpoint-ORIG-GUID: E5MsFUr0gmHumoib0omjezhclWBR1zv_ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 Content-Type: text/plain; charset="utf-8" Add devlink knobs to enable/disable counters on NPC default rule entries. Sample command to enable default rule counters: devlink dev param set name npc_def_rule_cntr value true cmode runtime Sample command to read the counter: cat /sys/kernel/debug/cn10k/npc/mcam_rules Signed-off-by: Linu Cherian --- Changelog from v4: Few code cleanups in npc_config_cntr_default_entries, - Minor code refactoring to make it explicit that counter reset is done only for newly enabled counters - Removed redundant init for rsp variable - Removed braces that are not required - "Reviewed-by" from Simon not added due to above changes. .../net/ethernet/marvell/octeontx2/af/rvu.h | 2 + .../marvell/octeontx2/af/rvu_devlink.c | 32 ++++++++++++++ .../ethernet/marvell/octeontx2/af/rvu_npc.c | 43 +++++++++++++++++++ 3 files changed, 77 insertions(+) diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/= ethernet/marvell/octeontx2/af/rvu.h index d92a5f47a476..e8c6a6fe9bd5 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h @@ -525,6 +525,7 @@ struct rvu { struct mutex alias_lock; /* Serialize bar2 alias access */ int vfs; /* Number of VFs attached to RVU */ u16 vf_devid; /* VF devices id */ + bool def_rule_cntr_en; int nix_blkaddr[MAX_NIX_BLKS]; =20 /* Mbox */ @@ -989,6 +990,7 @@ void npc_set_mcam_action(struct rvu *rvu, struct npc_mc= am *mcam, void npc_read_mcam_entry(struct rvu *rvu, struct npc_mcam *mcam, int blkaddr, u16 src, struct mcam_entry *entry, u8 *intf, u8 *ena); +int npc_config_cntr_default_entries(struct rvu *rvu, bool enable); bool is_cgx_config_permitted(struct rvu *rvu, u16 pcifunc); bool is_mac_feature_supported(struct rvu *rvu, int pf, int feature); u32 rvu_cgx_get_fifolen(struct rvu *rvu); diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c b/driv= ers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c index 7498ab429963..9c26e19a860b 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c @@ -1238,6 +1238,7 @@ enum rvu_af_dl_param_id { RVU_AF_DEVLINK_PARAM_ID_DWRR_MTU, RVU_AF_DEVLINK_PARAM_ID_NPC_MCAM_ZONE_PERCENT, RVU_AF_DEVLINK_PARAM_ID_NPC_EXACT_FEATURE_DISABLE, + RVU_AF_DEVLINK_PARAM_ID_NPC_DEF_RULE_CNTR_ENABLE, RVU_AF_DEVLINK_PARAM_ID_NIX_MAXLF, }; =20 @@ -1358,6 +1359,32 @@ static int rvu_af_dl_npc_mcam_high_zone_percent_vali= date(struct devlink *devlink return 0; } =20 +static int rvu_af_dl_npc_def_rule_cntr_get(struct devlink *devlink, u32 id, + struct devlink_param_gset_ctx *ctx) +{ + struct rvu_devlink *rvu_dl =3D devlink_priv(devlink); + struct rvu *rvu =3D rvu_dl->rvu; + + ctx->val.vbool =3D rvu->def_rule_cntr_en; + + return 0; +} + +static int rvu_af_dl_npc_def_rule_cntr_set(struct devlink *devlink, u32 id, + struct devlink_param_gset_ctx *ctx, + struct netlink_ext_ack *extack) +{ + struct rvu_devlink *rvu_dl =3D devlink_priv(devlink); + struct rvu *rvu =3D rvu_dl->rvu; + int err; + + err =3D npc_config_cntr_default_entries(rvu, ctx->val.vbool); + if (!err) + rvu->def_rule_cntr_en =3D ctx->val.vbool; + + return err; +} + static int rvu_af_dl_nix_maxlf_get(struct devlink *devlink, u32 id, struct devlink_param_gset_ctx *ctx) { @@ -1444,6 +1471,11 @@ static const struct devlink_param rvu_af_dl_params[]= =3D { rvu_af_dl_npc_mcam_high_zone_percent_get, rvu_af_dl_npc_mcam_high_zone_percent_set, rvu_af_dl_npc_mcam_high_zone_percent_validate), + DEVLINK_PARAM_DRIVER(RVU_AF_DEVLINK_PARAM_ID_NPC_DEF_RULE_CNTR_ENABLE, + "npc_def_rule_cntr", DEVLINK_PARAM_TYPE_BOOL, + BIT(DEVLINK_PARAM_CMODE_RUNTIME), + rvu_af_dl_npc_def_rule_cntr_get, + rvu_af_dl_npc_def_rule_cntr_set, NULL), DEVLINK_PARAM_DRIVER(RVU_AF_DEVLINK_PARAM_ID_NIX_MAXLF, "nix_maxlf", DEVLINK_PARAM_TYPE_U16, BIT(DEVLINK_PARAM_CMODE_RUNTIME), diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c b/drivers/= net/ethernet/marvell/octeontx2/af/rvu_npc.c index c4ef1e83cc46..821fe242f821 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c @@ -2691,6 +2691,49 @@ void npc_mcam_rsrcs_reserve(struct rvu *rvu, int blk= addr, int entry_idx) npc_mcam_set_bit(mcam, entry_idx); } =20 +int npc_config_cntr_default_entries(struct rvu *rvu, bool enable) +{ + struct npc_mcam *mcam =3D &rvu->hw->mcam; + struct npc_install_flow_rsp rsp; + struct rvu_npc_mcam_rule *rule; + int blkaddr; + + blkaddr =3D rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); + if (blkaddr < 0) + return -EINVAL; + + mutex_lock(&mcam->lock); + list_for_each_entry(rule, &mcam->mcam_rules, list) { + if (!is_mcam_entry_enabled(rvu, mcam, blkaddr, rule->entry)) + continue; + if (!rule->default_rule) + continue; + if (enable && !rule->has_cntr) { /* Alloc and map new counter */ + __rvu_mcam_add_counter_to_rule(rvu, rule->owner, + rule, &rsp); + if (rsp.counter < 0) { + dev_err(rvu->dev, + "%s: Failed to allocate cntr for default rule (err=3D%d)\n", + __func__, rsp.counter); + break; + } + npc_map_mcam_entry_and_cntr(rvu, mcam, blkaddr, + rule->entry, rsp.counter); + /* Reset counter before use */ + rvu_write64(rvu, blkaddr, + NPC_AF_MATCH_STATX(rule->cntr), 0x0); + } + + /* Free and unmap counter */ + if (!enable && rule->has_cntr) + __rvu_mcam_remove_counter_from_rule(rvu, rule->owner, + rule); + } + mutex_unlock(&mcam->lock); + + return 0; +} + int rvu_mbox_handler_npc_mcam_alloc_entry(struct rvu *rvu, struct npc_mcam_alloc_entry_req *req, struct npc_mcam_alloc_entry_rsp *rsp) --=20 2.34.1