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Message-ID: <SJ2PR11MB84526DB089614BD2972F6BA49BBC2@SJ2PR11MB8452.namprd11.prod.outlook.com>
Date: Thu, 17 Apr 2025 09:33:13 +0000
From: "Kubalewski, Arkadiusz" <arkadiusz.kubalewski@...el.com>
To: Jiri Pirko <jiri@...nulli.us>
CC: "donald.hunter@...il.com" <donald.hunter@...il.com>, "kuba@...nel.org"
<kuba@...nel.org>, "davem@...emloft.net" <davem@...emloft.net>, "Dumazet,
Eric" <edumazet@...gle.com>, "pabeni@...hat.com" <pabeni@...hat.com>,
"horms@...nel.org" <horms@...nel.org>, "vadim.fedorenko@...ux.dev"
<vadim.fedorenko@...ux.dev>, "Nguyen, Anthony L"
<anthony.l.nguyen@...el.com>, "Kitszel, Przemyslaw"
<przemyslaw.kitszel@...el.com>, "andrew+netdev@...n.ch"
<andrew+netdev@...n.ch>, "saeedm@...dia.com" <saeedm@...dia.com>,
"leon@...nel.org" <leon@...nel.org>, "tariqt@...dia.com" <tariqt@...dia.com>,
"jonathan.lemon@...il.com" <jonathan.lemon@...il.com>,
"richardcochran@...il.com" <richardcochran@...il.com>, "Loktionov, Aleksandr"
<aleksandr.loktionov@...el.com>, "Olech, Milena" <milena.olech@...el.com>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>,
"linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>
Subject: RE: [PATCH net-next v2 1/4] dpll: use struct dpll_device_info for
dpll registration
>From: Jiri Pirko <jiri@...nulli.us>
>Sent: Wednesday, April 16, 2025 2:13 PM
>
>Tue, Apr 15, 2025 at 08:15:40PM +0200, arkadiusz.kubalewski@...el.com
>wrote:
>>Instead of passing list of properties as arguments to
>>dpll_device_register(..) use a dedicated struct.
>>
>>Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@...el.com>
>>---
>>v2:
>>- new commit
>>---
>> drivers/dpll/dpll_core.c | 34 ++++++++++++-------
>> drivers/dpll/dpll_core.h | 2 +-
>> drivers/dpll/dpll_netlink.c | 7 ++--
>> drivers/net/ethernet/intel/ice/ice_dpll.c | 16 +++++----
>> drivers/net/ethernet/intel/ice/ice_dpll.h | 1 +
>> .../net/ethernet/mellanox/mlx5/core/dpll.c | 10 +++---
>> drivers/ptp/ptp_ocp.c | 7 ++--
>> include/linux/dpll.h | 11 ++++--
>> 8 files changed, 57 insertions(+), 31 deletions(-)
>>
>>diff --git a/drivers/dpll/dpll_core.c b/drivers/dpll/dpll_core.c
>>index 20bdc52f63a5..af9cda45a89c 100644
>>--- a/drivers/dpll/dpll_core.c
>>+++ b/drivers/dpll/dpll_core.c
>>@@ -34,7 +34,7 @@ static u32 dpll_pin_xa_id;
>>
>> struct dpll_device_registration {
>> struct list_head list;
>>- const struct dpll_device_ops *ops;
>>+ const struct dpll_device_info *info;
>> void *priv;
>> };
>>
>>@@ -327,12 +327,12 @@ EXPORT_SYMBOL_GPL(dpll_device_put);
>>
>> static struct dpll_device_registration *
>> dpll_device_registration_find(struct dpll_device *dpll,
>>- const struct dpll_device_ops *ops, void *priv)
>>+ const struct dpll_device_info *info, void *priv)
>> {
>> struct dpll_device_registration *reg;
>>
>> list_for_each_entry(reg, &dpll->registration_list, list) {
>>- if (reg->ops == ops && reg->priv == priv)
>>+ if (reg->info == info && reg->priv == priv)
>> return reg;
>> }
>> return NULL;
>>@@ -341,8 +341,7 @@ dpll_device_registration_find(struct dpll_device
>>*dpll,
>> /**
>> * dpll_device_register - register the dpll device in the subsystem
>> * @dpll: pointer to a dpll
>>- * @type: type of a dpll
>>- * @ops: ops for a dpll device
>>+ * @info: dpll device information and operations from registerer
>> * @priv: pointer to private information of owner
>> *
>> * Make dpll device available for user space.
>>@@ -352,11 +351,13 @@ dpll_device_registration_find(struct dpll_device
>>*dpll,
>> * * 0 on success
>> * * negative - error value
>> */
>>-int dpll_device_register(struct dpll_device *dpll, enum dpll_type type,
>>- const struct dpll_device_ops *ops, void *priv)
>>+int dpll_device_register(struct dpll_device *dpll,
>>+ const struct dpll_device_info *info, void *priv)
>
>I don't like this. If you need some capabilities value, put it into ops
>struct.
>
Hmm, this would seems strange, the _ops indicates operations, would
have to rename the struct..
In theory I could decide on capabilities per ops provided from driver..
i.e. If phase_input_monitor_feature_set()/phase_input_feature_get() are
present then capability phase_input_monitor is provided..
Makes sense?
>
>> {
>>+ const struct dpll_device_ops *ops = info->ops;
>> struct dpll_device_registration *reg;
>> bool first_registration = false;
>>+ enum dpll_type type = info->type;
>>
>> if (WARN_ON(!ops))
>> return -EINVAL;
>>@@ -368,7 +369,7 @@ int dpll_device_register(struct dpll_device *dpll,
>>enum dpll_type type,
>> return -EINVAL;
>>
>> mutex_lock(&dpll_lock);
>>- reg = dpll_device_registration_find(dpll, ops, priv);
>>+ reg = dpll_device_registration_find(dpll, info, priv);
>> if (reg) {
>> mutex_unlock(&dpll_lock);
>> return -EEXIST;
>>@@ -379,9 +380,8 @@ int dpll_device_register(struct dpll_device *dpll,
>>enum dpll_type type,
>> mutex_unlock(&dpll_lock);
>> return -ENOMEM;
>> }
>>- reg->ops = ops;
>>+ reg->info = info;
>> reg->priv = priv;
>>- dpll->type = type;
>> first_registration = list_empty(&dpll->registration_list);
>> list_add_tail(®->list, &dpll->registration_list);
>> if (!first_registration) {
>>@@ -408,14 +408,14 @@ EXPORT_SYMBOL_GPL(dpll_device_register);
>> * Context: Acquires a lock (dpll_lock)
>> */
>> void dpll_device_unregister(struct dpll_device *dpll,
>>- const struct dpll_device_ops *ops, void *priv)
>>+ const struct dpll_device_info *info, void *priv)
>> {
>> struct dpll_device_registration *reg;
>>
>> mutex_lock(&dpll_lock);
>> ASSERT_DPLL_REGISTERED(dpll);
>> dpll_device_delete_ntf(dpll);
>>- reg = dpll_device_registration_find(dpll, ops, priv);
>>+ reg = dpll_device_registration_find(dpll, info, priv);
>> if (WARN_ON(!reg)) {
>> mutex_unlock(&dpll_lock);
>> return;
>>@@ -807,7 +807,15 @@ const struct dpll_device_ops *dpll_device_ops(struct
>>dpll_device *dpll)
>> struct dpll_device_registration *reg;
>>
>> reg = dpll_device_registration_first(dpll);
>>- return reg->ops;
>>+ return reg->info->ops;
>>+}
>>+
>>+const struct dpll_device_info *dpll_device_info(struct dpll_device *dpll)
>
>Makes me wonder what you would need this for. I guess "nothing"?
>
Now using it to get info struct from dpll.. if struct is removed then yeah.
Thank you!
Arkadiusz
>
>>+{
>>+ struct dpll_device_registration *reg;
>>+
>>+ reg = dpll_device_registration_first(dpll);
>>+ return reg->info;
>> }
>>
>> static struct dpll_pin_registration *
>>diff --git a/drivers/dpll/dpll_core.h b/drivers/dpll/dpll_core.h
>>index 2b6d8ef1cdf3..baeb10d7dc1e 100644
>>--- a/drivers/dpll/dpll_core.h
>>+++ b/drivers/dpll/dpll_core.h
>>@@ -30,7 +30,6 @@ struct dpll_device {
>> u32 device_idx;
>> u64 clock_id;
>> struct module *module;
>>- enum dpll_type type;
>> struct xarray pin_refs;
>> refcount_t refcount;
>> struct list_head registration_list;
>>@@ -84,6 +83,7 @@ void *dpll_pin_on_pin_priv(struct dpll_pin *parent,
>>struct dpll_pin *pin);
>> const struct dpll_device_ops *dpll_device_ops(struct dpll_device *dpll);
>> struct dpll_device *dpll_device_get_by_id(int id);
>> const struct dpll_pin_ops *dpll_pin_ops(struct dpll_pin_ref *ref);
>>+const struct dpll_device_info *dpll_device_info(struct dpll_device
>>*dpll);
>> struct dpll_pin_ref *dpll_xa_ref_dpll_first(struct xarray *xa_refs);
>> extern struct xarray dpll_device_xa;
>> extern struct xarray dpll_pin_xa;
>>diff --git a/drivers/dpll/dpll_netlink.c b/drivers/dpll/dpll_netlink.c
>>index c130f87147fa..2de9ec08d551 100644
>>--- a/drivers/dpll/dpll_netlink.c
>>+++ b/drivers/dpll/dpll_netlink.c
>>@@ -564,6 +564,7 @@ static int
>> dpll_device_get_one(struct dpll_device *dpll, struct sk_buff *msg,
>> struct netlink_ext_ack *extack)
>> {
>>+ const struct dpll_device_info *info = dpll_device_info(dpll);
>> int ret;
>>
>> ret = dpll_msg_add_dev_handle(msg, dpll);
>>@@ -589,7 +590,7 @@ dpll_device_get_one(struct dpll_device *dpll, struct
>>sk_buff *msg,
>> ret = dpll_msg_add_mode_supported(msg, dpll, extack);
>> if (ret)
>> return ret;
>>- if (nla_put_u32(msg, DPLL_A_TYPE, dpll->type))
>>+ if (nla_put_u32(msg, DPLL_A_TYPE, info->type))
>> return -EMSGSIZE;
>>
>> return 0;
>>@@ -1415,11 +1416,13 @@ dpll_device_find(u64 clock_id, struct nlattr
>>*mod_name_attr,
>> unsigned long i;
>>
>> xa_for_each_marked(&dpll_device_xa, i, dpll, DPLL_REGISTERED) {
>>+ const struct dpll_device_info *info = dpll_device_info(dpll);
>>+
>> cid_match = clock_id ? dpll->clock_id == clock_id : true;
>> mod_match = mod_name_attr ? (module_name(dpll->module) ?
>> !nla_strcmp(mod_name_attr,
>> module_name(dpll->module)) : false) : true;
>>- type_match = type ? dpll->type == type : true;
>>+ type_match = type ? info->type == type : true;
>> if (cid_match && mod_match && type_match) {
>> if (dpll_match) {
>> NL_SET_ERR_MSG(extack, "multiple matches");
>>diff --git a/drivers/net/ethernet/intel/ice/ice_dpll.c
>>b/drivers/net/ethernet/intel/ice/ice_dpll.c
>>index bce3ad6ca2a6..0f7440a889ac 100644
>>--- a/drivers/net/ethernet/intel/ice/ice_dpll.c
>>+++ b/drivers/net/ethernet/intel/ice/ice_dpll.c
>>@@ -1977,7 +1977,7 @@ static void
>> ice_dpll_deinit_dpll(struct ice_pf *pf, struct ice_dpll *d, bool cgu)
>> {
>> if (cgu)
>>- dpll_device_unregister(d->dpll, &ice_dpll_ops, d);
>>+ dpll_device_unregister(d->dpll, &d->info, d);
>> dpll_device_put(d->dpll);
>> }
>>
>>@@ -1996,8 +1996,7 @@ ice_dpll_deinit_dpll(struct ice_pf *pf, struct
>>ice_dpll *d, bool cgu)
>> * * negative - initialization failure reason
>> */
>> static int
>>-ice_dpll_init_dpll(struct ice_pf *pf, struct ice_dpll *d, bool cgu,
>>- enum dpll_type type)
>>+ice_dpll_init_dpll(struct ice_pf *pf, struct ice_dpll *d, bool cgu)
>> {
>> u64 clock_id = pf->dplls.clock_id;
>> int ret;
>>@@ -2012,7 +2011,7 @@ ice_dpll_init_dpll(struct ice_pf *pf, struct
>>ice_dpll *d, bool cgu,
>> d->pf = pf;
>> if (cgu) {
>> ice_dpll_update_state(pf, d, true);
>>- ret = dpll_device_register(d->dpll, type, &ice_dpll_ops, d);
>>+ ret = dpll_device_register(d->dpll, &d->info, d);
>> if (ret) {
>> dpll_device_put(d->dpll);
>> return ret;
>>@@ -2363,7 +2362,12 @@ static int ice_dpll_init_info(struct ice_pf *pf,
>>bool cgu)
>> if (ret)
>> return ret;
>> de->mode = DPLL_MODE_AUTOMATIC;
>>+ de->info.type = DPLL_TYPE_EEC;
>>+ de->info.ops = &ice_dpll_ops;
>>+
>> dp->mode = DPLL_MODE_AUTOMATIC;
>>+ dp->info.type = DPLL_TYPE_PPS;
>>+ dp->info.ops = &ice_dpll_ops;
>>
>> dev_dbg(ice_pf_to_dev(pf),
>> "%s - success, inputs:%u, outputs:%u rclk-parents:%u\n",
>>@@ -2426,10 +2430,10 @@ void ice_dpll_init(struct ice_pf *pf)
>> err = ice_dpll_init_info(pf, cgu);
>> if (err)
>> goto err_exit;
>>- err = ice_dpll_init_dpll(pf, &pf->dplls.eec, cgu, DPLL_TYPE_EEC);
>>+ err = ice_dpll_init_dpll(pf, &pf->dplls.eec, cgu);
>> if (err)
>> goto deinit_info;
>>- err = ice_dpll_init_dpll(pf, &pf->dplls.pps, cgu, DPLL_TYPE_PPS);
>>+ err = ice_dpll_init_dpll(pf, &pf->dplls.pps, cgu);
>> if (err)
>> goto deinit_eec;
>> err = ice_dpll_init_pins(pf, cgu);
>>diff --git a/drivers/net/ethernet/intel/ice/ice_dpll.h
>>b/drivers/net/ethernet/intel/ice/ice_dpll.h
>>index c320f1bf7d6d..9db7463e293a 100644
>>--- a/drivers/net/ethernet/intel/ice/ice_dpll.h
>>+++ b/drivers/net/ethernet/intel/ice/ice_dpll.h
>>@@ -66,6 +66,7 @@ struct ice_dpll {
>> enum dpll_mode mode;
>> struct dpll_pin *active_input;
>> struct dpll_pin *prev_input;
>>+ struct dpll_device_info info;
>> };
>>
>> /** ice_dplls - store info required for CCU (clock controlling unit)
>>diff --git a/drivers/net/ethernet/mellanox/mlx5/core/dpll.c
>>b/drivers/net/ethernet/mellanox/mlx5/core/dpll.c
>>index 1e5522a19483..f722b1de0754 100644
>>--- a/drivers/net/ethernet/mellanox/mlx5/core/dpll.c
>>+++ b/drivers/net/ethernet/mellanox/mlx5/core/dpll.c
>>@@ -20,6 +20,7 @@ struct mlx5_dpll {
>> } last;
>> struct notifier_block mdev_nb;
>> struct net_device *tracking_netdev;
>>+ struct dpll_device_info info;
>> };
>>
>> static int mlx5_dpll_clock_id_get(struct mlx5_core_dev *mdev, u64
>>*clock_id)
>>@@ -444,8 +445,9 @@ static int mlx5_dpll_probe(struct auxiliary_device
>>*adev,
>> goto err_free_mdpll;
>> }
>>
>>- err = dpll_device_register(mdpll->dpll, DPLL_TYPE_EEC,
>>- &mlx5_dpll_device_ops, mdpll);
>>+ mdpll->info.type = DPLL_TYPE_EEC;
>>+ mdpll->info.ops = &mlx5_dpll_device_ops;
>>+ err = dpll_device_register(mdpll->dpll, &mdpll->info, mdpll);
>> if (err)
>> goto err_put_dpll_device;
>>
>>@@ -481,7 +483,7 @@ static int mlx5_dpll_probe(struct auxiliary_device
>>*adev,
>> err_put_dpll_pin:
>> dpll_pin_put(mdpll->dpll_pin);
>> err_unregister_dpll_device:
>>- dpll_device_unregister(mdpll->dpll, &mlx5_dpll_device_ops, mdpll);
>>+ dpll_device_unregister(mdpll->dpll, &mdpll->info, mdpll);
>> err_put_dpll_device:
>> dpll_device_put(mdpll->dpll);
>> err_free_mdpll:
>>@@ -500,7 +502,7 @@ static void mlx5_dpll_remove(struct auxiliary_device
>>*adev)
>> dpll_pin_unregister(mdpll->dpll, mdpll->dpll_pin,
>> &mlx5_dpll_pins_ops, mdpll);
>> dpll_pin_put(mdpll->dpll_pin);
>>- dpll_device_unregister(mdpll->dpll, &mlx5_dpll_device_ops, mdpll);
>>+ dpll_device_unregister(mdpll->dpll, &mdpll->info, mdpll);
>> dpll_device_put(mdpll->dpll);
>> kfree(mdpll);
>>
>>diff --git a/drivers/ptp/ptp_ocp.c b/drivers/ptp/ptp_ocp.c
>>index 7945c6be1f7c..b3c5d294acb4 100644
>>--- a/drivers/ptp/ptp_ocp.c
>>+++ b/drivers/ptp/ptp_ocp.c
>>@@ -382,6 +382,7 @@ struct ptp_ocp {
>> struct ptp_ocp_sma_connector sma[OCP_SMA_NUM];
>> const struct ocp_sma_op *sma_op;
>> struct dpll_device *dpll;
>>+ struct dpll_device_info dpll_info;
>> };
>>
>> #define OCP_REQ_TIMESTAMP BIT(0)
>>@@ -4745,7 +4746,9 @@ ptp_ocp_probe(struct pci_dev *pdev, const struct
>>pci_device_id *id)
>> goto out;
>> }
>>
>>- err = dpll_device_register(bp->dpll, DPLL_TYPE_PPS, &dpll_ops, bp);
>>+ bp->dpll_info.type = DPLL_TYPE_PPS;
>>+ bp->dpll_info.ops = &dpll_ops;
>>+ err = dpll_device_register(bp->dpll, &bp->dpll_info, bp);
>> if (err)
>> goto out;
>>
>>@@ -4796,7 +4799,7 @@ ptp_ocp_remove(struct pci_dev *pdev)
>> dpll_pin_put(bp->sma[i].dpll_pin);
>> }
>> }
>>- dpll_device_unregister(bp->dpll, &dpll_ops, bp);
>>+ dpll_device_unregister(bp->dpll, &bp->dpll_info, bp);
>> dpll_device_put(bp->dpll);
>> devlink_unregister(devlink);
>> ptp_ocp_detach(bp);
>>diff --git a/include/linux/dpll.h b/include/linux/dpll.h
>>index 5e4f9ab1cf75..0489464af958 100644
>>--- a/include/linux/dpll.h
>>+++ b/include/linux/dpll.h
>>@@ -97,6 +97,11 @@ struct dpll_pin_ops {
>> struct netlink_ext_ack *extack);
>> };
>>
>>+struct dpll_device_info {
>>+ enum dpll_type type;
>>+ const struct dpll_device_ops *ops;
>>+};
>>+
>> struct dpll_pin_frequency {
>> u64 min;
>> u64 max;
>>@@ -170,11 +175,11 @@ dpll_device_get(u64 clock_id, u32 dev_driver_id,
>>struct module *module);
>>
>> void dpll_device_put(struct dpll_device *dpll);
>>
>>-int dpll_device_register(struct dpll_device *dpll, enum dpll_type type,
>>- const struct dpll_device_ops *ops, void *priv);
>>+int dpll_device_register(struct dpll_device *dpll,
>>+ const struct dpll_device_info *info, void *priv);
>>
>> void dpll_device_unregister(struct dpll_device *dpll,
>>- const struct dpll_device_ops *ops, void *priv);
>>+ const struct dpll_device_info *info, void *priv);
>>
>> struct dpll_pin *
>> dpll_pin_get(u64 clock_id, u32 dev_driver_id, struct module *module,
>>--
>>2.38.1
>>
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