From patchwork Mon Jan 18 20:12:19 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Saeed Mahameed X-Patchwork-Id: 12028175 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A203DC433E0 for ; Mon, 18 Jan 2021 20:25:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 417F522C9D for ; Mon, 18 Jan 2021 20:25:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2437356AbhARUVg (ORCPT ); Mon, 18 Jan 2021 15:21:36 -0500 Received: from mail.kernel.org ([198.145.29.99]:52818 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2394052AbhARUN2 (ORCPT ); Mon, 18 Jan 2021 15:13:28 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 5A33622E03; Mon, 18 Jan 2021 20:12:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1611000767; bh=eSYLmvCypJgMnlM449jFAOgQeum1+s5F1uGrryXaYDQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Gf5s64qzPIm6QxxHLLObmqAfxuT6OzC/sh30x5YtJ3yRXLLqGmgXK8bCv5MoXuMht H//r9CIPEyzl5n17MKzN32aWb24PV0cc9odaqGZJGetlQC8b2O0Mob40GWhOeqOgk9 XL5m3pGNLCsRiujq7Rv3WMxIfsCx3ic6XXL6HDzBcWHovPVDCR0VgU0PHjUUMefJNo FQi7o+3Q62zP+PIyuwNvR5Nj5lQEsxgdlyAKd6XgVZFfQ9r++e2rADkHRY4s+bdzax fvJ1a/IGrduOi592vVabjD7C7pW9iG0dOztJDS18sTNwJwQ8Ly8RX+rGrIobLZDx0L UbQQcDmDj4UAg== From: Saeed Mahameed To: "David S. Miller" , Jakub Kicinski , Jason Gunthorpe Cc: netdev@vger.kernel.org, linux-rdma@vger.kernel.org, Parav Pandit , Jiri Pirko , Vu Pham , Saeed Mahameed Subject: [net-next V7 02/14] devlink: Introduce PCI SF port flavour and port attribute Date: Mon, 18 Jan 2021 12:12:19 -0800 Message-Id: <20210118201231.363126-3-saeed@kernel.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210118201231.363126-1-saeed@kernel.org> References: <20210118201231.363126-1-saeed@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org From: Parav Pandit A PCI sub-function (SF) represents a portion of the device similar to PCI VF. In an eswitch, PCI SF may have port which is normally represented using a representor netdevice. To have better visibility of eswitch port, its association with SF, and its representor netdevice, introduce a PCI SF port flavour. When devlink port flavour is PCI SF, fill up PCI SF attributes of the port. Extend port name creation using PCI PF and SF number scheme on best effort basis, so that vendor drivers can skip defining their own scheme. This is done as cApfNSfM, where A, N and M are controller, PCI PF and PCI SF number respectively. This is similar to existing naming for PCI PF and PCI VF ports. An example view of a PCI SF port: $ devlink port show pci/0000:06:00.0/32768 pci/0000:06:00.0/32768: type eth netdev ens2f0npf0sf88 flavour pcisf controller 0 pfnum 0 sfnum 88 external false splittable false function: hw_addr 00:00:00:00:88:88 state active opstate attached $ devlink port show pci/0000:06:00.0/32768 -jp { "port": { "pci/0000:06:00.0/32768": { "type": "eth", "netdev": "ens2f0npf0sf88", "flavour": "pcisf", "controller": 0, "pfnum": 0, "sfnum": 88, "splittable": false, "function": { "hw_addr": "00:00:00:00:88:88", "state": "active", "opstate": "attached" } } } } Signed-off-by: Parav Pandit Reviewed-by: Jiri Pirko Reviewed-by: Vu Pham Signed-off-by: Saeed Mahameed --- include/net/devlink.h | 16 +++++++++++++++ include/uapi/linux/devlink.h | 5 +++++ net/core/devlink.c | 39 ++++++++++++++++++++++++++++++++++++ 3 files changed, 60 insertions(+) diff --git a/include/net/devlink.h b/include/net/devlink.h index f466819cc477..dc3bf8000082 100644 --- a/include/net/devlink.h +++ b/include/net/devlink.h @@ -93,6 +93,18 @@ struct devlink_port_pci_vf_attrs { u8 external:1; }; +/** + * struct devlink_port_pci_sf_attrs - devlink port's PCI SF attributes + * @controller: Associated controller number + * @sf: Associated PCI SF for of the PCI PF for this port. + * @pf: Associated PCI PF number for this port. + */ +struct devlink_port_pci_sf_attrs { + u32 controller; + u32 sf; + u16 pf; +}; + /** * struct devlink_port_attrs - devlink port object * @flavour: flavour of the port @@ -103,6 +115,7 @@ struct devlink_port_pci_vf_attrs { * @phys: physical port attributes * @pci_pf: PCI PF port attributes * @pci_vf: PCI VF port attributes + * @pci_sf: PCI SF port attributes */ struct devlink_port_attrs { u8 split:1, @@ -114,6 +127,7 @@ struct devlink_port_attrs { struct devlink_port_phys_attrs phys; struct devlink_port_pci_pf_attrs pci_pf; struct devlink_port_pci_vf_attrs pci_vf; + struct devlink_port_pci_sf_attrs pci_sf; }; }; @@ -1404,6 +1418,8 @@ void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 contro u16 pf, bool external); void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller, u16 pf, u16 vf, bool external); +void devlink_port_attrs_pci_sf_set(struct devlink_port *devlink_port, + u32 controller, u16 pf, u32 sf); int devlink_sb_register(struct devlink *devlink, unsigned int sb_index, u32 size, u16 ingress_pools_count, u16 egress_pools_count, u16 ingress_tc_count, diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h index cf89c318f2ac..1a241b09a7f8 100644 --- a/include/uapi/linux/devlink.h +++ b/include/uapi/linux/devlink.h @@ -200,6 +200,10 @@ enum devlink_port_flavour { DEVLINK_PORT_FLAVOUR_UNUSED, /* Port which exists in the switch, but * is not used in any way. */ + DEVLINK_PORT_FLAVOUR_PCI_SF, /* Represents eswitch port + * for the PCI SF. It is an internal + * port that faces the PCI SF. + */ }; enum devlink_param_cmode { @@ -529,6 +533,7 @@ enum devlink_attr { DEVLINK_ATTR_RELOAD_ACTION_INFO, /* nested */ DEVLINK_ATTR_RELOAD_ACTION_STATS, /* nested */ + DEVLINK_ATTR_PORT_PCI_SF_NUMBER, /* u32 */ /* add new attributes above here, update the policy in devlink.c */ __DEVLINK_ATTR_MAX, diff --git a/net/core/devlink.c b/net/core/devlink.c index c39496311b71..4cbc02fb602d 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -690,6 +690,15 @@ static int devlink_nl_port_attrs_put(struct sk_buff *msg, if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external)) return -EMSGSIZE; break; + case DEVLINK_PORT_FLAVOUR_PCI_SF: + if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER, + attrs->pci_sf.controller) || + nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, + attrs->pci_sf.pf) || + nla_put_u32(msg, DEVLINK_ATTR_PORT_PCI_SF_NUMBER, + attrs->pci_sf.sf)) + return -EMSGSIZE; + break; case DEVLINK_PORT_FLAVOUR_PHYSICAL: case DEVLINK_PORT_FLAVOUR_CPU: case DEVLINK_PORT_FLAVOUR_DSA: @@ -8374,6 +8383,32 @@ void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 contro } EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set); +/** + * devlink_port_attrs_pci_sf_set - Set PCI SF port attributes + * + * @devlink_port: devlink port + * @controller: associated controller number for the devlink port instance + * @pf: associated PF for the devlink port instance + * @sf: associated SF of a PF for the devlink port instance + */ +void devlink_port_attrs_pci_sf_set(struct devlink_port *devlink_port, u32 controller, + u16 pf, u32 sf) +{ + struct devlink_port_attrs *attrs = &devlink_port->attrs; + int ret; + + if (WARN_ON(devlink_port->registered)) + return; + ret = __devlink_port_attrs_set(devlink_port, + DEVLINK_PORT_FLAVOUR_PCI_SF); + if (ret) + return; + attrs->pci_sf.controller = controller; + attrs->pci_sf.pf = pf; + attrs->pci_sf.sf = sf; +} +EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_sf_set); + static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port, char *name, size_t len) { @@ -8422,6 +8457,10 @@ static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port, n = snprintf(name, len, "pf%uvf%u", attrs->pci_vf.pf, attrs->pci_vf.vf); break; + case DEVLINK_PORT_FLAVOUR_PCI_SF: + n = snprintf(name, len, "pf%usf%u", attrs->pci_sf.pf, + attrs->pci_sf.sf); + break; } if (n >= len)