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[124.33.176.97]) by smtp.gmail.com with ESMTPSA id q17-20020a170902eb9100b00188a908cbddsm6710225plg.302.2022.11.27.05.10.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 27 Nov 2022 05:10:34 -0800 (PST) Sender: Vincent Mailhol From: Vincent Mailhol To: Jiri Pirko , netdev@vger.kernel.org, Jakub Kicinski Cc: "David S . Miller" , Eric Dumazet , Paolo Abeni , linux-kernel@vger.kernel.org, Boris Brezillon , Arnaud Ebalard , Srujana Challa , Kurt Kanzenbach , Andrew Lunn , Florian Fainelli , Vladimir Oltean , Michael Chan , Ioana Ciornei , Dimitris Michailidis , Yisen Zhuang , Salil Mehta , Jesse Brandeburg , Tony Nguyen , Sunil Goutham , Linu Cherian , Geetha sowjanya , Jerin Jacob , hariprasad , Subbaraya Sundeep , Taras Chornyi , Saeed Mahameed , Leon Romanovsky , Ido Schimmel , Petr Machata , Simon Horman , Shannon Nelson , drivers@pensando.io, Ariel Elior , Manish Chopra , Jonathan Lemon , Vadim Fedorenko , Richard Cochran , Vadim Pasternak , Shalom Toledo , linux-crypto@vger.kernel.org, intel-wired-lan@lists.osuosl.org, linux-rdma@vger.kernel.org, oss-drivers@corigine.com, Jiri Pirko , Herbert Xu , Hao Chen , Guangbin Huang , Minghao Chi , Shijith Thotton , Vincent Mailhol Subject: [PATCH net-next v3 5/5] net: devlink: make the devlink_ops::info_get() callback optional Date: Sun, 27 Nov 2022 22:09:19 +0900 Message-Id: <20221127130919.638324-6-mailhol.vincent@wanadoo.fr> X-Mailer: git-send-email 2.37.4 In-Reply-To: <20221127130919.638324-1-mailhol.vincent@wanadoo.fr> References: <20221122154934.13937-1-mailhol.vincent@wanadoo.fr> <20221127130919.638324-1-mailhol.vincent@wanadoo.fr> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Some drivers only reported the driver name in their devlink_ops::info_get() callback. Now that the core provides this information, the callback became empty. For such drivers, just removing the callback would prevent the core from executing devlink_nl_info_fill() meaning that "devlink dev info" would not return anything. Make the callback function optional by executing devlink_nl_info_fill() even if devlink_ops::info_get() is NULL. Remove all the empty devlink_ops::info_get() functions from the drivers. N.B.: the drivers with devlink support which previously did not implement devlink_ops::info_get() will now also be able to report the driver name. Signed-off-by: Vincent Mailhol --- .../net/ethernet/fungible/funeth/funeth_devlink.c | 7 ------- .../net/ethernet/marvell/octeontx2/af/rvu_devlink.c | 7 ------- .../ethernet/marvell/octeontx2/nic/otx2_devlink.c | 8 -------- net/core/devlink.c | 13 ++++++------- 4 files changed, 6 insertions(+), 29 deletions(-) diff --git a/drivers/net/ethernet/fungible/funeth/funeth_devlink.c b/drivers/net/ethernet/fungible/funeth/funeth_devlink.c index 6668375edff6..4fbeb3fd71a8 100644 --- a/drivers/net/ethernet/fungible/funeth/funeth_devlink.c +++ b/drivers/net/ethernet/fungible/funeth/funeth_devlink.c @@ -3,14 +3,7 @@ #include "funeth.h" #include "funeth_devlink.h" -static int fun_dl_info_get(struct devlink *dl, struct devlink_info_req *req, - struct netlink_ext_ack *extack) -{ - return 0; -} - static const struct devlink_ops fun_dl_ops = { - .info_get = fun_dl_info_get, }; struct devlink *fun_devlink_alloc(struct device *dev) diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c index f15439d26d21..bda1a6fa2ec4 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c @@ -1547,14 +1547,7 @@ static int rvu_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode, return 0; } -static int rvu_devlink_info_get(struct devlink *devlink, struct devlink_info_req *req, - struct netlink_ext_ack *extack) -{ - return 0; -} - static const struct devlink_ops rvu_devlink_ops = { - .info_get = rvu_devlink_info_get, .eswitch_mode_get = rvu_devlink_eswitch_mode_get, .eswitch_mode_set = rvu_devlink_eswitch_mode_set, }; diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_devlink.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_devlink.c index 5cc6416cf1a6..63ef7c41d18d 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_devlink.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_devlink.c @@ -77,15 +77,7 @@ static const struct devlink_param otx2_dl_params[] = { otx2_dl_mcam_count_validate), }; -static int otx2_devlink_info_get(struct devlink *devlink, - struct devlink_info_req *req, - struct netlink_ext_ack *extack) -{ - return 0; -} - static const struct devlink_ops otx2_devlink_ops = { - .info_get = otx2_devlink_info_get, }; int otx2_register_dl(struct otx2_nic *pfvf) diff --git a/net/core/devlink.c b/net/core/devlink.c index 3babc16eeb6b..817d978bb729 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -6773,9 +6773,11 @@ devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink, goto err_cancel_msg; req.msg = msg; - err = devlink->ops->info_get(devlink, &req, extack); - if (err) - goto err_cancel_msg; + if (devlink->ops->info_get) { + err = devlink->ops->info_get(devlink, &req, extack); + if (err) + goto err_cancel_msg; + } err = devlink_nl_driver_info_get(dev->driver, &req); if (err) @@ -6796,9 +6798,6 @@ static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb, struct sk_buff *msg; int err; - if (!devlink->ops->info_get) - return -EOPNOTSUPP; - msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) return -ENOMEM; @@ -6824,7 +6823,7 @@ static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg, int err = 0; devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) { - if (idx < start || !devlink->ops->info_get) + if (idx < start) goto inc; devl_lock(devlink);