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Mon, 07 Aug 2023 01:11:15 -0700 (PDT) Date: Mon, 7 Aug 2023 10:11:14 +0200 From: Jiri Pirko To: Vadim Fedorenko Cc: Jakub Kicinski , Arkadiusz Kubalewski , Jonathan Lemon , Paolo Abeni , Milena Olech , Michal Michalik , linux-arm-kernel@lists.infradead.org, poros@redhat.com, mschmidt@redhat.com, netdev@vger.kernel.org, linux-clk@vger.kernel.org, Bart Van Assche , intel-wired-lan@lists.osuosl.org Subject: Re: [PATCH net-next v2 4/9] dpll: netlink: Add DPLL framework base functions Message-ID: References: <20230804190454.394062-1-vadim.fedorenko@linux.dev> <20230804190454.394062-5-vadim.fedorenko@linux.dev> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20230804190454.394062-5-vadim.fedorenko@linux.dev> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230807_011118_402439_6ED87FC3 X-CRM114-Status: GOOD ( 10.65 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Fri, Aug 04, 2023 at 09:04:49PM CEST, vadim.fedorenko@linux.dev wrote: >DPLL framework is used to represent and configure DPLL devices >in systems. Each device that has DPLL and can configure inputs >and outputs can use this framework. > >Implement dpll netlink framework functions for enablement of dpll >subsystem netlink family. > >Co-developed-by: Milena Olech >Signed-off-by: Milena Olech >Co-developed-by: Michal Michalik >Signed-off-by: Michal Michalik >Signed-off-by: Vadim Fedorenko >Co-developed-by: Arkadiusz Kubalewski >Signed-off-by: Arkadiusz Kubalewski Besides couple of small nits below, looks fine to me. Signed-off-by: Jiri Pirko [...] >+static int >+dpll_pin_freq_set(struct dpll_pin *pin, struct nlattr *a, >+ struct netlink_ext_ack *extack) >+{ >+ u64 freq = nla_get_u64(a); >+ struct dpll_pin_ref *ref; >+ unsigned long i; >+ int ret; >+ >+ if (!dpll_pin_is_freq_supported(pin, freq)) { >+ NL_SET_ERR_MSG_FMT(extack, "not supported freq:%llu on pin:%u", Please remove "pin%u". User knows on which object he is operating. >+ freq, pin->id); >+ return -EINVAL; >+ } >+ >+ xa_for_each(&pin->dpll_refs, i, ref) { >+ const struct dpll_pin_ops *ops = dpll_pin_ops(ref); >+ struct dpll_device *dpll = ref->dpll; >+ >+ if (!ops->frequency_set) >+ return -EOPNOTSUPP; >+ ret = ops->frequency_set(pin, dpll_pin_on_dpll_priv(dpll, pin), >+ dpll, dpll_priv(dpll), freq, extack); >+ if (ret) >+ return ret; >+ __dpll_pin_change_ntf(pin); >+ } >+ >+ return 0; >+} >+ >+static int >+dpll_pin_on_pin_state_set(struct dpll_pin *pin, u32 parent_idx, >+ enum dpll_pin_state state, >+ struct netlink_ext_ack *extack) >+{ >+ struct dpll_pin_ref *parent_ref; >+ const struct dpll_pin_ops *ops; >+ struct dpll_pin_ref *dpll_ref; >+ void *pin_priv, *parent_priv; >+ struct dpll_pin *parent; >+ unsigned long i; >+ int ret; >+ >+ if (!(DPLL_PIN_CAPS_STATE_CAN_CHANGE & pin->prop->capabilities)) { >+ NL_SET_ERR_MSG_FMT(extack, "pin:%u not allowed to change state", Please remove "pin%u". User knows on which object he is operating. >+ pin->id); >+ return -EOPNOTSUPP; >+ } >+ parent = xa_load(&dpll_pin_xa, parent_idx); >+ if (!parent) >+ return -EINVAL; >+ parent_ref = xa_load(&pin->parent_refs, parent->pin_idx); >+ if (!parent_ref) >+ return -EINVAL; >+ xa_for_each(&parent->dpll_refs, i, dpll_ref) { >+ ops = dpll_pin_ops(parent_ref); >+ if (!ops->state_on_pin_set) >+ return -EOPNOTSUPP; >+ pin_priv = dpll_pin_on_pin_priv(parent, pin); >+ parent_priv = dpll_pin_on_dpll_priv(dpll_ref->dpll, parent); >+ ret = ops->state_on_pin_set(pin, pin_priv, parent, parent_priv, >+ state, extack); >+ if (ret) >+ return ret; >+ } >+ __dpll_pin_change_ntf(pin); >+ >+ return 0; >+} >+ >+static int >+dpll_pin_state_set(struct dpll_device *dpll, struct dpll_pin *pin, >+ enum dpll_pin_state state, >+ struct netlink_ext_ack *extack) >+{ >+ const struct dpll_pin_ops *ops; >+ struct dpll_pin_ref *ref; >+ int ret; >+ >+ if (!(DPLL_PIN_CAPS_STATE_CAN_CHANGE & pin->prop->capabilities)) { >+ NL_SET_ERR_MSG_FMT(extack, "pin:%u not allowed to change state", Please remove "pin%u". User knows on which object he is operating. >+ pin->id); >+ return -EOPNOTSUPP; >+ } >+ ref = xa_load(&pin->dpll_refs, dpll->device_idx); >+ ASSERT_NOT_NULL(ref); >+ ops = dpll_pin_ops(ref); >+ if (!ops->state_on_dpll_set) >+ return -EOPNOTSUPP; >+ ret = ops->state_on_dpll_set(pin, dpll_pin_on_dpll_priv(dpll, pin), >+ dpll, dpll_priv(dpll), state, extack); >+ if (ret) >+ return ret; >+ __dpll_pin_change_ntf(pin); >+ >+ return 0; >+} >+ >+static int >+dpll_pin_prio_set(struct dpll_device *dpll, struct dpll_pin *pin, >+ u32 prio, struct netlink_ext_ack *extack) >+{ >+ const struct dpll_pin_ops *ops; >+ struct dpll_pin_ref *ref; >+ int ret; >+ >+ if (!(DPLL_PIN_CAPS_PRIORITY_CAN_CHANGE & pin->prop->capabilities)) { >+ NL_SET_ERR_MSG_FMT(extack, "pin:%u not allowed to change prio", Please remove "pin%u". User knows on which object he is operating. >+ pin->id); >+ return -EOPNOTSUPP; >+ } >+ ref = xa_load(&pin->dpll_refs, dpll->device_idx); >+ ASSERT_NOT_NULL(ref); >+ ops = dpll_pin_ops(ref); >+ if (!ops->prio_set) >+ return -EOPNOTSUPP; >+ ret = ops->prio_set(pin, dpll_pin_on_dpll_priv(dpll, pin), dpll, >+ dpll_priv(dpll), prio, extack); >+ if (ret) >+ return ret; >+ __dpll_pin_change_ntf(pin); >+ >+ return 0; >+} >+ >+static int >+dpll_pin_direction_set(struct dpll_pin *pin, struct dpll_device *dpll, >+ enum dpll_pin_direction direction, >+ struct netlink_ext_ack *extack) >+{ >+ const struct dpll_pin_ops *ops; >+ struct dpll_pin_ref *ref; >+ int ret; >+ >+ if (!(DPLL_PIN_CAPS_DIRECTION_CAN_CHANGE & pin->prop->capabilities)) { >+ NL_SET_ERR_MSG_FMT(extack, >+ "pin:%u not allowed to change direction", Please remove "pin%u". User knows on which object he is operating. >+ pin->id); >+ return -EOPNOTSUPP; >+ } >+ ref = xa_load(&pin->dpll_refs, dpll->device_idx); >+ ASSERT_NOT_NULL(ref); >+ ops = dpll_pin_ops(ref); >+ if (!ops->direction_set) >+ return -EOPNOTSUPP; >+ ret = ops->direction_set(pin, dpll_pin_on_dpll_priv(dpll, pin), >+ dpll, dpll_priv(dpll), direction, extack); >+ if (ret) >+ return ret; >+ __dpll_pin_change_ntf(pin); >+ >+ return 0; >+} >+ [...] >+static int >+dpll_pin_set_from_nlattr(struct dpll_pin *pin, struct genl_info *info) >+{ >+ int rem, ret = -EINVAL; >+ struct nlattr *a; >+ >+ nla_for_each_attr(a, genlmsg_data(info->genlhdr), >+ genlmsg_len(info->genlhdr), rem) { >+ switch (nla_type(a)) { >+ case DPLL_A_PIN_FREQUENCY: >+ ret = dpll_pin_freq_set(pin, a, info->extack); >+ if (ret) >+ return ret; >+ break; >+ case DPLL_A_PIN_PARENT_DEVICE: >+ ret = dpll_pin_parent_device_set(pin, a, info->extack); >+ if (ret) >+ return ret; >+ break; >+ case DPLL_A_PIN_PARENT_PIN: >+ ret = dpll_pin_parent_pin_set(pin, a, info->extack); >+ if (ret) >+ return ret; >+ break; >+ case DPLL_A_PIN_ID: >+ case DPLL_A_ID: >+ break; >+ default: >+ NL_SET_ERR_MSG_FMT(info->extack, >+ "unsupported attribute (%d)", >+ nla_type(a)); How exactly this could happen? I mean, we have strict parsing on, the policy checking during parse ensures no unknown attr is seen here. Please remove this "default" section. >+ return -EINVAL; >+ } >+ } >+ >+ return 0; >+} >+ [...] _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel