[{"id":3688427,"web_url":"http://patchwork.ozlabs.org/comment/3688427/","msgid":"","list_archive_url":null,"date":"2026-05-08T13:38:39","subject":"Re: [Intel-wired-lan] [PATCH iwl-next v1 05/15] ice: add helpers\n for Global RSS LUT alloc, free, vsi_update","submitter":{"id":75597,"url":"http://patchwork.ozlabs.org/api/people/75597/","name":"Loktionov, Aleksandr","email":"aleksandr.loktionov@intel.com"},"content":"> -----Original Message-----\n> From: Kitszel, Przemyslaw \n> Sent: Friday, May 8, 2026 2:42 PM\n> To: intel-wired-lan@lists.osuosl.org; Schmidt, Michal\n> ; Jakub Kicinski ; Jiri Pirko\n> \n> Cc: netdev@vger.kernel.org; Simon Horman ; Nguyen,\n> Anthony L ; Michal Swiatkowski\n> ; Richardson, Bruce\n> ; Medvedkin, Vladimir\n> ; Connolly, Padraig J\n> ; S, Ananth ;\n> Miskell, Timothy ; Keller, Jacob E\n> ; Czapnik, Lukasz\n> ; Loktionov, Aleksandr\n> ; Andrew Lunn ;\n> David S. Miller ; Eric Dumazet\n> ; Paolo Abeni ; Saeed Mahameed\n> ; Leon Romanovsky ; Tariq Toukan\n> ; Mark Bloch ; Kitszel,\n> Przemyslaw \n> Subject: [PATCH iwl-next v1 05/15] ice: add helpers for Global RSS LUT\n> alloc, free, vsi_update\n> \n> Add AQ commands for RSS Global LUT allocation and free operations.\n> Functions will be called since subsequent commit.\n> \n> Add programming code for GLOBAL LUT ID of UPDATE VSI AQ, do the same\n> for RSS LUT \"type\", also for PF LUT in case of VF VSI.\n> \n> Co-developed-by: Brett Creeley \n> Signed-off-by: Brett Creeley \n> Signed-off-by: Przemek Kitszel \n> ---\n> drivers/net/ethernet/intel/ice/ice.h | 1 +\n> .../net/ethernet/intel/ice/ice_adminq_cmd.h | 1 +\n> drivers/net/ethernet/intel/ice/ice_switch.h | 2 +\n> drivers/net/ethernet/intel/ice/ice_lib.c | 28 +++++++++++--\n> drivers/net/ethernet/intel/ice/ice_switch.c | 41\n> +++++++++++++++++++\n> 5 files changed, 69 insertions(+), 4 deletions(-)\n> \n> diff --git a/drivers/net/ethernet/intel/ice/ice.h\n> b/drivers/net/ethernet/intel/ice/ice.h\n> index f9a43daf04fe..7f4f299c4d37 100644\n> --- a/drivers/net/ethernet/intel/ice/ice.h\n> +++ b/drivers/net/ethernet/intel/ice/ice.h\n> @@ -369,6 +369,7 @@ struct ice_vsi {\n> \tu8 *rss_hkey_user;\t/* User configured hash keys */\n> \tu8 *rss_lut_user;\t/* User configured lookup table entries */\n> \tu8 rss_lut_type;\t/* used to configure Get/Set RSS LUT AQ\n> call */\n> +\tu8 global_lut_id; /* valid when lut_type == GLOBAL_LUT */\n> \n> \t/* aRFS members only allocated for the PF VSI */\n> #define ICE_MAX_ARFS_LIST\t1024\n> diff --git a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h\n> b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h\n> index d41b2427482d..c49896db51c6 100644\n> --- a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h\n> +++ b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h\n> @@ -169,6 +169,7 @@ struct ice_aqc_set_port_params {\n> #define ICE_AQC_RES_TYPE_VSI_LIST_PRUNE\t\t\t0x04\n> #define ICE_AQC_RES_TYPE_RECIPE\t\t\t\t0x05\n> #define ICE_AQC_RES_TYPE_SWID\t\t\t\t0x07\n> +#define ICE_AQC_RES_TYPE_GLOBAL_RSS_HASH\t\t0x20\n> #define ICE_AQC_RES_TYPE_FDIR_COUNTER_BLOCK\t\t0x21\n> #define ICE_AQC_RES_TYPE_FDIR_GUARANTEED_ENTRIES\t0x22\n> #define ICE_AQC_RES_TYPE_FDIR_SHARED_ENTRIES\t\t0x23\n> diff --git a/drivers/net/ethernet/intel/ice/ice_switch.h\n> b/drivers/net/ethernet/intel/ice/ice_switch.h\n> index b442db4a2ce5..ab6a8c78d14a 100644\n> --- a/drivers/net/ethernet/intel/ice/ice_switch.h\n> +++ b/drivers/net/ethernet/intel/ice/ice_switch.h\n> @@ -401,6 +401,8 @@ ice_rem_adv_rule_by_id(struct ice_hw *hw,\n> \t\t struct ice_rule_query_data *remove_entry);\n> \n> int ice_init_def_sw_recp(struct ice_hw *hw);\n> +int ice_alloc_rss_global_lut(struct ice_hw *hw, u16 *global_lut_id);\n> +int ice_free_rss_global_lut(struct ice_hw *hw, u16 global_lut_id);\n> u16 ice_get_hw_vsi_num(struct ice_hw *hw, u16 vsi_handle);\n> \n> int ice_replay_vsi_all_fltr(struct ice_hw *hw, u16 vsi_handle); diff\n> --git a/drivers/net/ethernet/intel/ice/ice_lib.c\n> b/drivers/net/ethernet/intel/ice/ice_lib.c\n> index ac6698a01d2f..2de62cde14ab 100644\n> --- a/drivers/net/ethernet/intel/ice/ice_lib.c\n> +++ b/drivers/net/ethernet/intel/ice/ice_lib.c\n> @@ -1154,30 +1154,46 @@ static void ice_set_fd_vsi_ctx(struct\n> ice_vsi_ctx *ctxt, struct ice_vsi *vsi)\n> \tctxt->info.acl_def_act = cpu_to_le16(val); }\n> \n> +/* Translate @lut_type used in most of the places to the Admin Queue\n> + * Q_OPT value for RSS.\n> + * Used with VSI ADD and VSI UPDATE AQs (opcodes 0x0210, 0x0211).\n> + */\n> +static u8 ice_lut_type_to_aq_qopt_rss_val(enum ice_lut_type lut_type)\n> {\n> +\tswitch (lut_type) {\n> +\tcase ICE_LUT_PF:\n> +\t\treturn ICE_AQ_VSI_Q_OPT_RSS_LUT_PF;\n> +\tcase ICE_LUT_GLOBAL:\n> +\t\treturn ICE_AQ_VSI_Q_OPT_RSS_LUT_GBL;\n> +\tcase ICE_LUT_VSI:\n> +\tdefault:\n> +\t\treturn ICE_AQ_VSI_Q_OPT_RSS_LUT_VSI;\n> +\t}\n> +}\n> +\n> /**\n> * ice_set_rss_vsi_ctx - Set RSS VSI context before adding a VSI\n> * @ctxt: the VSI context being set\n> * @vsi: the VSI being configured\n> */\n> void ice_set_rss_vsi_ctx(struct ice_vsi_ctx *ctxt, struct ice_vsi\n> *vsi) {\n> \tu8 lut_type, hash_type;\n> +\tu8 global_lut_id = 0;\n> \tstruct device *dev;\n> \tstruct ice_pf *pf;\n> \n> \tpf = vsi->back;\n> \tdev = ice_pf_to_dev(pf);\n> \n> \tswitch (vsi->type) {\n> \tcase ICE_VSI_CHNL:\n> -\tcase ICE_VSI_PF:\n> -\t\t/* PF VSI will inherit RSS instance of PF */\n> \t\tlut_type = ICE_AQ_VSI_Q_OPT_RSS_LUT_PF;\n> \t\tbreak;\n> +\tcase ICE_VSI_PF:\n> \tcase ICE_VSI_VF:\n> \tcase ICE_VSI_SF:\n> -\t\t/* VF VSI will gets a small RSS table which is a VSI LUT\n> type */\n> -\t\tlut_type = ICE_AQ_VSI_Q_OPT_RSS_LUT_VSI;\n> +\t\tlut_type = ice_lut_type_to_aq_qopt_rss_val(vsi-\n> >rss_lut_type);\n> \t\tbreak;\n> \tdefault:\n> \t\tdev_dbg(dev, \"Unsupported VSI type %s\\n\", @@ -1189,8\n> +1205,12 @@ void ice_set_rss_vsi_ctx(struct ice_vsi_ctx *ctxt, struct\n> ice_vsi *vsi)\n> \t\tvsi->rss_hfunc = ICE_AQ_VSI_Q_OPT_RSS_HASH_TPLZ;\n> \thash_type = vsi->rss_hfunc;\n> \n> +\tif (vsi->rss_lut_type == ICE_LUT_GLOBAL)\n> +\t\t global_lut_id = vsi->global_lut_id;\n> +\n> \tctxt->info.q_opt_rss =\n> \t\tFIELD_PREP(ICE_AQ_VSI_Q_OPT_RSS_LUT_M, lut_type) |\n> +\t\tFIELD_PREP(ICE_AQ_VSI_Q_OPT_RSS_GBL_LUT_M,\n> global_lut_id) |\n> \t\tFIELD_PREP(ICE_AQ_VSI_Q_OPT_RSS_HASH_M, hash_type); }\n> \n> diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c\n> b/drivers/net/ethernet/intel/ice/ice_switch.c\n> index 88f1aefc24b3..b783c97f6cfe 100644\n> --- a/drivers/net/ethernet/intel/ice/ice_switch.c\n> +++ b/drivers/net/ethernet/intel/ice/ice_switch.c\n> @@ -1527,6 +1527,47 @@ ice_aq_get_sw_cfg(struct ice_hw *hw, struct\n> ice_aqc_get_sw_cfg_resp_elem *buf,\n> \treturn status;\n> }\n> \n> +/* Allocate a new Global LUT for the caller.\n> + * LUT ID is returned via @global_lut_id.\n> + */\n> +int ice_alloc_rss_global_lut(struct ice_hw *hw, u16 *global_lut_id) {\n> +\tDEFINE_RAW_FLEX(struct ice_aqc_alloc_free_res_elem, buf, elem,\n> 1);\n> +\tu16 buf_len = __struct_size(buf);\n> +\tint err;\n> +\n> +\tbuf->num_elems = cpu_to_le16(1);\n> +\tbuf->res_type = cpu_to_le16(ICE_AQC_RES_TYPE_GLOBAL_RSS_HASH);\n> +\n> +\terr = ice_aq_alloc_free_res(hw, buf, buf_len,\n> ice_aqc_opc_alloc_res);\n> +\tif (err)\n> +\t\tice_debug(hw, ICE_DBG_RES, \"Failed to allocate RSS\n> global LUT, err %d\\n\",\n> +\t\t\t err);\n> +\telse\n> +\t\t*global_lut_id = le16_to_cpu(buf->elem[0].e.sw_resp);\n> +\n> +\treturn err;\n> +}\n> +\n> +/* Free Global LUT at @global_lut_id. */ int\n> +ice_free_rss_global_lut(struct ice_hw *hw, u16 global_lut_id) {\n> +\tDEFINE_RAW_FLEX(struct ice_aqc_alloc_free_res_elem, buf, elem,\n> 1);\n> +\tu16 buf_len = __struct_size(buf);\n> +\tint err;\n> +\n> +\tbuf->num_elems = cpu_to_le16(1);\n> +\tbuf->res_type = cpu_to_le16(ICE_AQC_RES_TYPE_GLOBAL_RSS_HASH);\n> +\tbuf->elem[0].e.sw_resp = cpu_to_le16(global_lut_id);\n> +\n> +\terr = ice_aq_alloc_free_res(hw, buf, buf_len,\n> ice_aqc_opc_free_res);\n> +\tif (err)\n> +\t\tice_debug(hw, ICE_DBG_RES, \"Failed to free RSS global\n> LUT %d, err %d\\n\",\n> +\t\t\t global_lut_id, err);\n> +\n> +\treturn err;\n> +}\n> +\n> /**\n> * ice_aq_add_vsi\n> * @hw: pointer to the HW struct\n> --\n> 2.39.3\n\nReviewed-by: Aleksandr Loktionov ","headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","intel-wired-lan@lists.osuosl.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","intel-wired-lan@lists.osuosl.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=osuosl.org header.i=@osuosl.org header.a=rsa-sha256\n header.s=default header.b=XfxVOv//;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=osuosl.org\n (client-ip=2605:bc80:3010::136; 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