[{"id":3688604,"web_url":"http://patchwork.ozlabs.org/comment/3688604/","msgid":"","list_archive_url":null,"date":"2026-05-08T16:55:34","subject":"Re: [Intel-wired-lan] [PATCH iwl-next v1 12/15] ice: introduce\n handling of virtchnl LARGE VF opcodes","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 12/15] ice: introduce handling of virtchnl\n> LARGE VF opcodes\n> \n> From: Brett Creeley \n> \n> With new virtchnl offload/capability VFs are able to make use of more\n> than\n> 16 queues. But to old opcodes were designed with a max of 16 queues,\n> so new ones were added (by iavf/virtchnl commit of this series):\n> VIRTCHNL_OP_GET_MAX_RSS_QREGION, VIRTCHNL_OP_ENABLE_QUEUES_V2,\n> VIRTCHNL_OP_DISABLE_QUEUES_V2, VIRTCHNL_OP_MAP_QUEUE_VECTOR.\n> \n> If a VF wishes to request >16 queues it should first make sure that\n> the PF supports the VIRTCHNL_VF_LARGE_NUM_QPAIRS capability.\n> \n> Co-developed-by: Przemek Kitszel \n> Signed-off-by: Przemek Kitszel \n> Co-developed-by: Aleksandr Loktionov #\n> msglen val\n> Signed-off-by: Aleksandr Loktionov \n> Signed-off-by: Brett Creeley \n> ---\n> drivers/net/ethernet/intel/ice/ice_vf_lib.h | 1 +\n> drivers/net/ethernet/intel/ice/virt/queues.h | 3 +\n> .../net/ethernet/intel/ice/virt/allowlist.c | 8 +\n> drivers/net/ethernet/intel/ice/virt/queues.c | 324\n> ++++++++++++++++++\n> 4 files changed, 336 insertions(+)\n> \n> diff --git a/drivers/net/ethernet/intel/ice/ice_vf_lib.h\n> b/drivers/net/ethernet/intel/ice/ice_vf_lib.h\n> index 1b56f7150eb7..5411eaa1761c 100644\n> --- a/drivers/net/ethernet/intel/ice/ice_vf_lib.h\n> +++ b/drivers/net/ethernet/intel/ice/ice_vf_lib.h\n> @@ -125,6 +125,7 @@ struct ice_vf_ops {\n> \tvoid (*clear_reset_trigger)(struct ice_vf *vf);\n> \tvoid (*irq_close)(struct ice_vf *vf);\n> \tvoid (*post_vsi_rebuild)(struct ice_vf *vf);\n\n...\n\n> +/**\n> + * ice_vc_map_q_vector_msg - message handling for\n> +VIRTCHNL_OP_MAP_QUEUE_VECTOR\n> + * @vf: source of the request\n> + * @msg: message to handle\n> + * @msglen: length of @msg\n> + *\n> + * Return: 0 on success or negative on error */ int\n> +ice_vc_map_q_vector_msg(struct ice_vf *vf, u8 *msg, u16 msglen) {\n> +\tenum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;\n> +\tstruct virtchnl_queue_vector_maps *qv_maps;\n> +\tstruct ice_vsi *vsi;\n> +\n> +\tqv_maps = (struct virtchnl_queue_vector_maps *)msg;\n> +\n> +\tif (!ice_vc_validate_qv_maps(vf, qv_maps, msglen)) {\n> +\t\tv_ret = VIRTCHNL_STATUS_ERR_PARAM;\n> +\t\tgoto error_param;\n> +\t}\n> +\n> +\tfor (int i = 0; i < qv_maps->num_qv_maps; i++) {\n> +\t\tstruct virtchnl_queue_vector *qv_map = &qv_maps-\n> >qv_maps[i];\n> +\t\tstruct ice_q_vector *q_vector;\n> +\t\tu16 vector_id;\n> +\t\tint vsi_q_id;\n> +\n> +\t\tvsi = ice_get_vf_vsi(vf);\n> +\t\tvsi_q_id = qv_map->queue_id;\n> +\t\tvector_id = qv_map->vector_id;\n> +\n> +\t\tif (!vsi) {\n> +\t\t\tv_ret = VIRTCHNL_STATUS_ERR_PARAM;\n> +\t\t\tgoto error_param;\n> +\t\t}\n> +\n> +\t\tq_vector = vf->vf_ops->get_q_vector(vsi, vector_id);\n> +\n> +\t\tif (!q_vector) {\n> +\t\t\tv_ret = VIRTCHNL_STATUS_ERR_PARAM;\n> +\t\t\tgoto error_param;\n> +\t\t}\n> +\n> +\t\tif (!ice_vc_isvalid_q_id(vsi, vsi_q_id))\nThis function declared as returning linux errno, not enum.\nAnd in this case there is no reply to VF (goto error_param), couldn't it lead to VF stall?\n\n> +\t\t\treturn VIRTCHNL_STATUS_ERR_PARAM;\n> +\n> +\t\tif (qv_map->queue_type == VIRTCHNL_QUEUE_TYPE_RX)\n> +\t\t\tice_cfg_rxq_interrupt(vsi, vsi_q_id,\n> +\t\t\t\t\t q_vector->vf_reg_idx,\n> +\t\t\t\t\t qv_map->itr_idx);\n> +\t\telse if (qv_map->queue_type == VIRTCHNL_QUEUE_TYPE_TX)\n> +\t\t\tice_cfg_txq_interrupt(vsi, vsi_q_id,\n> +\t\t\t\t\t q_vector->vf_reg_idx,\n> +\t\t\t\t\t qv_map->itr_idx);\n> +\t}\n> +\n> +error_param:\n> +\treturn ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_MAP_QUEUE_VECTOR,\n> +\t\t\t\t v_ret, NULL, 0);\n> +}\n> --\n> 2.39.3","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=VTQVo5Pc;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=osuosl.org\n (client-ip=2605:bc80:3010::137; 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Miller\" ,\n Eric Dumazet , Paolo Abeni , \"Saeed\n Mahameed\" , Leon Romanovsky , \"Tariq\n Toukan\" , Mark Bloch ","Thread-Topic":"[PATCH iwl-next v1 12/15] ice: introduce handling of virtchnl\n LARGE VF opcodes","Thread-Index":"AQHc3uqfgwAn7IdDEUe0FOxwcM4JfLYEV+bA","Date":"Fri, 8 May 2026 16:55:34 +0000","Message-ID":"\n ","References":"<20260508124208.11622-1-przemyslaw.kitszel@intel.com>\n <20260508124208.11622-13-przemyslaw.kitszel@intel.com>","In-Reply-To":"<20260508124208.11622-13-przemyslaw.kitszel@intel.com>","Accept-Language":"en-US","Content-Language":"en-US","X-MS-Has-Attach":"","X-MS-TNEF-Correlator":"","x-ms-publictraffictype":"Email","x-ms-traffictypediagnostic":"IA3PR11MB8986:EE_|IA1PR11MB7942:EE_","x-ms-office365-filtering-correlation-id":"2f55de1c-57c9-406c-8178-08dead229f5f","x-ld-processed":"46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr","x-ms-exchange-senderadcheck":"1","x-ms-exchange-antispam-relay":"0","x-microsoft-antispam":"BCL:0;\n ARA:13230040|366016|376014|7416014|1800799024|38070700021|18002099003|56012099003|22082099003;","x-microsoft-antispam-message-info":"\n 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","x-forefront-antispam-report":"CIP:255.255.255.255; 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