From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mustafa Ismail Date: Wed, 20 Nov 2019 11:01:50 -0600 Subject: [Intel-wired-lan] [PATCH] i40e: Register a virtbus device to provide RDMA Message-ID: <20191120170150.36240-1-mustafa.ismail@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: intel-wired-lan@osuosl.org List-ID: From: "Shiraz Saleem" Register client virtbus device on the virtbus for the RDMA virtbus driver (irdma) to bind to. It allows to realize a single RDMA driver capable of working with multiple netdev drivers over multi-generation Intel HW supporting RDMA. There is also no load ordering dependencies between i40e and irdma. Summary of changes: * Support to add/remove virtbus devices * Add 2 new client ops. * i40e_client_device_register() which is called during RDMA probe() per PF. Validate client drv OPs and schedule service task to call open() * i40e_client_device_unregister() called during RDMA remove() per PF. Call client close() and release_qvlist. * The global register/unregister calls exported for i40iw are retained until i40iw is removed from the kernel. Signed-off-by: Mustafa Ismail Signed-off-by: Shiraz Saleem --- drivers/infiniband/hw/i40iw/Makefile | 1 - drivers/infiniband/hw/i40iw/i40iw.h | 2 +- drivers/net/ethernet/intel/Kconfig | 1 + drivers/net/ethernet/intel/i40e/i40e.h | 3 +- drivers/net/ethernet/intel/i40e/i40e_client.c | 109 +++++++++++-- drivers/net/ethernet/intel/i40e/i40e_client.h | 203 ------------------------ include/linux/net/intel/i40e_client.h | 213 ++++++++++++++++++++++++++ 7 files changed, 310 insertions(+), 222 deletions(-) delete mode 100644 drivers/net/ethernet/intel/i40e/i40e_client.h create mode 100644 include/linux/net/intel/i40e_client.h diff --git a/drivers/infiniband/hw/i40iw/Makefile b/drivers/infiniband/hw/i40iw/Makefile index 8942f82..34da9eb 100644 --- a/drivers/infiniband/hw/i40iw/Makefile +++ b/drivers/infiniband/hw/i40iw/Makefile @@ -1,5 +1,4 @@ # SPDX-License-Identifier: GPL-2.0 -ccflags-y := -I $(srctree)/drivers/net/ethernet/intel/i40e obj-$(CONFIG_INFINIBAND_I40IW) += i40iw.o diff --git a/drivers/infiniband/hw/i40iw/i40iw.h b/drivers/infiniband/hw/i40iw/i40iw.h index 8feec35..3197e35 100644 --- a/drivers/infiniband/hw/i40iw/i40iw.h +++ b/drivers/infiniband/hw/i40iw/i40iw.h @@ -57,7 +57,7 @@ #include "i40iw_d.h" #include "i40iw_hmc.h" -#include +#include #include "i40iw_type.h" #include "i40iw_p.h" #include diff --git a/drivers/net/ethernet/intel/Kconfig b/drivers/net/ethernet/intel/Kconfig index 154e2e8..a19fb3c 100644 --- a/drivers/net/ethernet/intel/Kconfig +++ b/drivers/net/ethernet/intel/Kconfig @@ -241,6 +241,7 @@ config I40E tristate "Intel(R) Ethernet Controller XL710 Family support" imply PTP_1588_CLOCK depends on PCI + select VIRTUAL_BUS ---help--- This driver supports Intel(R) Ethernet Controller XL710 Family of devices. For more information on how to identify your adapter, go diff --git a/drivers/net/ethernet/intel/i40e/i40e.h b/drivers/net/ethernet/intel/i40e/i40e.h index 2af9f63..ed7c721 100644 --- a/drivers/net/ethernet/intel/i40e/i40e.h +++ b/drivers/net/ethernet/intel/i40e/i40e.h @@ -38,7 +38,7 @@ #include #include "i40e_type.h" #include "i40e_prototype.h" -#include "i40e_client.h" +#include #include #include "i40e_virtchnl_pf.h" #include "i40e_txrx.h" @@ -655,6 +655,7 @@ struct i40e_pf { u16 last_sw_conf_valid_flags; /* List to keep previous DDP profiles to be rolled back in the future */ struct list_head ddp_old_prof; + int peer_idx; }; /** diff --git a/drivers/net/ethernet/intel/i40e/i40e_client.c b/drivers/net/ethernet/intel/i40e/i40e_client.c index e81530c..a3dee72 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_client.c +++ b/drivers/net/ethernet/intel/i40e/i40e_client.c @@ -1,12 +1,12 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright(c) 2013 - 2018 Intel Corporation. */ +#include #include #include #include "i40e.h" #include "i40e_prototype.h" -#include "i40e_client.h" static const char i40e_client_interface_version_str[] = I40E_CLIENT_VERSION_STR; static struct i40e_client *registered_client; @@ -30,11 +30,17 @@ static int i40e_client_update_vsi_ctxt(struct i40e_info *ldev, bool is_vf, u32 vf_id, u32 flag, u32 valid_flag); +static int i40e_client_device_register(struct i40e_info *ldev); + +static void i40e_client_device_unregister(struct i40e_info *ldev); + static struct i40e_ops i40e_lan_ops = { .virtchnl_send = i40e_client_virtchnl_send, .setup_qvlist = i40e_client_setup_qvlist, .request_reset = i40e_client_request_reset, .update_vsi_ctxt = i40e_client_update_vsi_ctxt, + .client_device_register = i40e_client_device_register, + .client_device_unregister = i40e_client_device_unregister, }; /** @@ -275,6 +281,27 @@ void i40e_client_update_msix_info(struct i40e_pf *pf) cdev->lan_info.msix_entries = &pf->msix_entries[pf->iwarp_base_vector]; } +static int i40e_init_client_virtdev(struct i40e_pf *pf) +{ + struct i40e_info *ldev = &pf->cinst->lan_info; + struct pci_dev *pdev = pf->pdev; + struct virtbus_device *vdev; + int ret; + + vdev = &ldev->vdev; + vdev->name = I40E_PEER_RDMA_NAME; + vdev->dev.parent = &pf->pdev->dev; + + ret = virtbus_dev_register(vdev); + if (ret) { + dev_err(&pdev->dev, "Failure adding client virtbus dev %s %d\n", + I40E_PEER_RDMA_NAME, ret); + return ret; + } + + return 0; +} + /** * i40e_client_add_instance - add a client instance struct to the instance list * @pf: pointer to the board struct @@ -288,9 +315,6 @@ static void i40e_client_add_instance(struct i40e_pf *pf) struct netdev_hw_addr *mac = NULL; struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi]; - if (!registered_client || pf->cinst) - return; - cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); if (!cdev) return; @@ -326,7 +350,11 @@ static void i40e_client_add_instance(struct i40e_pf *pf) cdev->client = registered_client; pf->cinst = cdev; - i40e_client_update_msix_info(pf); + cdev->lan_info.msix_count = pf->num_iwarp_msix; + cdev->lan_info.msix_entries = &pf->msix_entries[pf->iwarp_base_vector]; + + i40e_init_client_virtdev(pf); + set_bit(__I40E_CLIENT_INSTANCE_NONE, &cdev->state); } /** @@ -347,7 +375,7 @@ void i40e_client_del_instance(struct i40e_pf *pf) **/ void i40e_client_subtask(struct i40e_pf *pf) { - struct i40e_client *client = registered_client; + struct i40e_client *client; struct i40e_client_instance *cdev; struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi]; int ret = 0; @@ -361,9 +389,11 @@ void i40e_client_subtask(struct i40e_pf *pf) test_bit(__I40E_CONFIG_BUSY, pf->state)) return; - if (!client || !cdev) + if (!cdev || !cdev->client) return; + client = cdev->client; + /* Here we handle client opens. If the client is down, and * the netdev is registered, then open the client. */ @@ -424,16 +454,8 @@ int i40e_lan_add_device(struct i40e_pf *pf) pf->hw.pf_id, pf->hw.bus.bus_id, pf->hw.bus.device, pf->hw.bus.func); - /* If a client has already been registered, we need to add an instance - * of it to our new LAN device. - */ - if (registered_client) - i40e_client_add_instance(pf); + i40e_client_add_instance(pf); - /* Since in some cases register may have happened before a device gets - * added, we can schedule a subtask to go initiate the clients if - * they can be launched at probe time. - */ set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state); i40e_service_event_schedule(pf); @@ -453,6 +475,8 @@ int i40e_lan_del_device(struct i40e_pf *pf) struct i40e_device *ldev, *tmp; int ret = -ENODEV; + virtbus_dev_unregister(&pf->cinst->lan_info.vdev); + /* First, remove any client instance. */ i40e_client_del_instance(pf); @@ -733,6 +757,59 @@ static int i40e_client_update_vsi_ctxt(struct i40e_info *ldev, return err; } +static int i40e_client_device_register(struct i40e_info *ldev) +{ + struct i40e_client *client; + struct i40e_pf *pf; + + if (!ldev) { + pr_err("Failed to reg client dev: ldev ptr NULL\n"); + return -EINVAL; + } + + client = ldev->client; + pf = ldev->pf; + if (!client) { + pr_err("Failed to reg client dev: client ptr NULL\n"); + return -EINVAL; + } + + if (!ldev->ops || !client->ops) { + pr_err("Failed to reg client dev: client dev peer_ops/ops NULL\n"); + return -EINVAL; + } + + pf->cinst->client = ldev->client; + set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state); + i40e_service_event_schedule(pf); + + return 0; +} + +static void i40e_client_device_unregister(struct i40e_info *ldev) +{ + struct i40e_pf *pf = ldev->pf; + struct i40e_client_instance *cdev = pf->cinst; + + while (test_and_set_bit(__I40E_SERVICE_SCHED, pf->state)) + usleep_range(500, 1000); + + if (!cdev || !cdev->client || !cdev->client->ops || + !cdev->client->ops->close) { + dev_err(&pf->pdev->dev, "Cannot close client device\n"); + return; + } + cdev->client->ops->close(&cdev->lan_info, cdev->client, false); + clear_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state); + i40e_client_release_qvlist(&cdev->lan_info); + pf->cinst->client = NULL; + clear_bit(__I40E_SERVICE_SCHED, pf->state); +} + +/* Retain legacy global registration/unregistration calls till i40iw is + * deprecated from the kernel. The irdma unified driver does not use these + * exported symbols. + */ /** * i40e_register_client - Register a i40e client driver with the L2 driver * @client: pointer to the i40e_client struct diff --git a/drivers/net/ethernet/intel/i40e/i40e_client.h b/drivers/net/ethernet/intel/i40e/i40e_client.h deleted file mode 100644 index 72994ba..0000000 --- a/drivers/net/ethernet/intel/i40e/i40e_client.h +++ /dev/null @@ -1,203 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright(c) 2013 - 2018 Intel Corporation. */ - -#ifndef _I40E_CLIENT_H_ -#define _I40E_CLIENT_H_ - -#define I40E_CLIENT_STR_LENGTH 10 - -/* Client interface version should be updated anytime there is a change in the - * existing APIs or data structures. - */ -#define I40E_CLIENT_VERSION_MAJOR 0 -#define I40E_CLIENT_VERSION_MINOR 01 -#define I40E_CLIENT_VERSION_BUILD 00 -#define I40E_CLIENT_VERSION_STR \ - __stringify(I40E_CLIENT_VERSION_MAJOR) "." \ - __stringify(I40E_CLIENT_VERSION_MINOR) "." \ - __stringify(I40E_CLIENT_VERSION_BUILD) - -struct i40e_client_version { - u8 major; - u8 minor; - u8 build; - u8 rsvd; -}; - -enum i40e_client_state { - __I40E_CLIENT_NULL, - __I40E_CLIENT_REGISTERED -}; - -enum i40e_client_instance_state { - __I40E_CLIENT_INSTANCE_NONE, - __I40E_CLIENT_INSTANCE_OPENED, -}; - -struct i40e_ops; -struct i40e_client; - -/* HW does not define a type value for AEQ; only for RX/TX and CEQ. - * In order for us to keep the interface simple, SW will define a - * unique type value for AEQ. - */ -#define I40E_QUEUE_TYPE_PE_AEQ 0x80 -#define I40E_QUEUE_INVALID_IDX 0xFFFF - -struct i40e_qv_info { - u32 v_idx; /* msix_vector */ - u16 ceq_idx; - u16 aeq_idx; - u8 itr_idx; -}; - -struct i40e_qvlist_info { - u32 num_vectors; - struct i40e_qv_info qv_info[1]; -}; - -#define I40E_CLIENT_MSIX_ALL 0xFFFFFFFF - -/* set of LAN parameters useful for clients managed by LAN */ - -/* Struct to hold per priority info */ -struct i40e_prio_qos_params { - u16 qs_handle; /* qs handle for prio */ - u8 tc; /* TC mapped to prio */ - u8 reserved; -}; - -#define I40E_CLIENT_MAX_USER_PRIORITY 8 -/* Struct to hold Client QoS */ -struct i40e_qos_params { - struct i40e_prio_qos_params prio_qos[I40E_CLIENT_MAX_USER_PRIORITY]; -}; - -struct i40e_params { - struct i40e_qos_params qos; - u16 mtu; -}; - -/* Structure to hold Lan device info for a client device */ -struct i40e_info { - struct i40e_client_version version; - u8 lanmac[6]; - struct net_device *netdev; - struct pci_dev *pcidev; - u8 __iomem *hw_addr; - u8 fid; /* function id, PF id or VF id */ -#define I40E_CLIENT_FTYPE_PF 0 -#define I40E_CLIENT_FTYPE_VF 1 - u8 ftype; /* function type, PF or VF */ - void *pf; - - /* All L2 params that could change during the life span of the PF - * and needs to be communicated to the client when they change - */ - struct i40e_qvlist_info *qvlist_info; - struct i40e_params params; - struct i40e_ops *ops; - - u16 msix_count; /* number of msix vectors*/ - /* Array down below will be dynamically allocated based on msix_count */ - struct msix_entry *msix_entries; - u16 itr_index; /* Which ITR index the PE driver is suppose to use */ - u16 fw_maj_ver; /* firmware major version */ - u16 fw_min_ver; /* firmware minor version */ - u32 fw_build; /* firmware build number */ -}; - -#define I40E_CLIENT_RESET_LEVEL_PF 1 -#define I40E_CLIENT_RESET_LEVEL_CORE 2 -#define I40E_CLIENT_VSI_FLAG_TCP_ENABLE BIT(1) - -struct i40e_ops { - /* setup_q_vector_list enables queues with a particular vector */ - int (*setup_qvlist)(struct i40e_info *ldev, struct i40e_client *client, - struct i40e_qvlist_info *qv_info); - - int (*virtchnl_send)(struct i40e_info *ldev, struct i40e_client *client, - u32 vf_id, u8 *msg, u16 len); - - /* If the PE Engine is unresponsive, RDMA driver can request a reset. - * The level helps determine the level of reset being requested. - */ - void (*request_reset)(struct i40e_info *ldev, - struct i40e_client *client, u32 level); - - /* API for the RDMA driver to set certain VSI flags that control - * PE Engine. - */ - int (*update_vsi_ctxt)(struct i40e_info *ldev, - struct i40e_client *client, - bool is_vf, u32 vf_id, - u32 flag, u32 valid_flag); -}; - -struct i40e_client_ops { - /* Should be called from register_client() or whenever PF is ready - * to create a specific client instance. - */ - int (*open)(struct i40e_info *ldev, struct i40e_client *client); - - /* Should be called when netdev is unavailable or when unregister - * call comes in. If the close is happenening due to a reset being - * triggered set the reset bit to true. - */ - void (*close)(struct i40e_info *ldev, struct i40e_client *client, - bool reset); - - /* called when some l2 managed parameters changes - mtu */ - void (*l2_param_change)(struct i40e_info *ldev, - struct i40e_client *client, - struct i40e_params *params); - - int (*virtchnl_receive)(struct i40e_info *ldev, - struct i40e_client *client, u32 vf_id, - u8 *msg, u16 len); - - /* called when a VF is reset by the PF */ - void (*vf_reset)(struct i40e_info *ldev, - struct i40e_client *client, u32 vf_id); - - /* called when the number of VFs changes */ - void (*vf_enable)(struct i40e_info *ldev, - struct i40e_client *client, u32 num_vfs); - - /* returns true if VF is capable of specified offload */ - int (*vf_capable)(struct i40e_info *ldev, - struct i40e_client *client, u32 vf_id); -}; - -/* Client device */ -struct i40e_client_instance { - struct list_head list; - struct i40e_info lan_info; - struct i40e_client *client; - unsigned long state; -}; - -struct i40e_client { - struct list_head list; /* list of registered clients */ - char name[I40E_CLIENT_STR_LENGTH]; - struct i40e_client_version version; - unsigned long state; /* client state */ - atomic_t ref_cnt; /* Count of all the client devices of this kind */ - u32 flags; -#define I40E_CLIENT_FLAGS_LAUNCH_ON_PROBE BIT(0) -#define I40E_TX_FLAGS_NOTIFY_OTHER_EVENTS BIT(2) - u8 type; -#define I40E_CLIENT_IWARP 0 - const struct i40e_client_ops *ops; /* client ops provided by the client */ -}; - -static inline bool i40e_client_is_registered(struct i40e_client *client) -{ - return test_bit(__I40E_CLIENT_REGISTERED, &client->state); -} - -/* used by clients */ -int i40e_register_client(struct i40e_client *client); -int i40e_unregister_client(struct i40e_client *client); - -#endif /* _I40E_CLIENT_H_ */ diff --git a/include/linux/net/intel/i40e_client.h b/include/linux/net/intel/i40e_client.h new file mode 100644 index 0000000..7e147d3 --- /dev/null +++ b/include/linux/net/intel/i40e_client.h @@ -0,0 +1,213 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright(c) 2013 - 2018 Intel Corporation. */ + +#ifndef _I40E_CLIENT_H_ +#define _I40E_CLIENT_H_ + +#include + +#define I40E_PEER_RDMA_NAME "i40e_rdma" +#define I40E_CLIENT_STR_LENGTH 10 + +/* Client interface version should be updated anytime there is a change in the + * existing APIs or data structures. + */ +#define I40E_CLIENT_VERSION_MAJOR 0 +#define I40E_CLIENT_VERSION_MINOR 01 +#define I40E_CLIENT_VERSION_BUILD 00 +#define I40E_CLIENT_VERSION_STR \ + __stringify(I40E_CLIENT_VERSION_MAJOR) "." \ + __stringify(I40E_CLIENT_VERSION_MINOR) "." \ + __stringify(I40E_CLIENT_VERSION_BUILD) + +struct i40e_client_version { + u8 major; + u8 minor; + u8 build; + u8 rsvd; +}; + +enum i40e_client_state { + __I40E_CLIENT_NULL, + __I40E_CLIENT_REGISTERED +}; + +enum i40e_client_instance_state { + __I40E_CLIENT_INSTANCE_NONE, + __I40E_CLIENT_INSTANCE_OPENED, +}; + +struct i40e_ops; +struct i40e_client; + +/* HW does not define a type value for AEQ; only for RX/TX and CEQ. + * In order for us to keep the interface simple, SW will define a + * unique type value for AEQ. + */ +#define I40E_QUEUE_TYPE_PE_AEQ 0x80 +#define I40E_QUEUE_INVALID_IDX 0xFFFF + +struct i40e_qv_info { + u32 v_idx; /* msix_vector */ + u16 ceq_idx; + u16 aeq_idx; + u8 itr_idx; +}; + +struct i40e_qvlist_info { + u32 num_vectors; + struct i40e_qv_info qv_info[1]; +}; + +#define I40E_CLIENT_MSIX_ALL 0xFFFFFFFF + +/* set of LAN parameters useful for clients managed by LAN */ + +/* Struct to hold per priority info */ +struct i40e_prio_qos_params { + u16 qs_handle; /* qs handle for prio */ + u8 tc; /* TC mapped to prio */ + u8 reserved; +}; + +#define I40E_CLIENT_MAX_USER_PRIORITY 8 +/* Struct to hold Client QoS */ +struct i40e_qos_params { + struct i40e_prio_qos_params prio_qos[I40E_CLIENT_MAX_USER_PRIORITY]; +}; + +struct i40e_params { + struct i40e_qos_params qos; + u16 mtu; +}; + +/* Structure to hold Lan device info for a client device */ +struct i40e_info { + struct virtbus_device vdev; + struct i40e_client_version version; + u8 lanmac[6]; + struct net_device *netdev; + struct pci_dev *pcidev; + u8 __iomem *hw_addr; + u8 fid; /* function id, PF id or VF id */ +#define I40E_CLIENT_FTYPE_PF 0 +#define I40E_CLIENT_FTYPE_VF 1 + u8 ftype; /* function type, PF or VF */ + void *pf; + + /* All L2 params that could change during the life span of the PF + * and needs to be communicated to the client when they change + */ + struct i40e_qvlist_info *qvlist_info; + struct i40e_params params; + struct i40e_ops *ops; + struct i40e_client *client; + + u16 msix_count; /* number of msix vectors*/ + /* Array down below will be dynamically allocated based on msix_count */ + struct msix_entry *msix_entries; + u16 itr_index; /* Which ITR index the PE driver is suppose to use */ + u16 fw_maj_ver; /* firmware major version */ + u16 fw_min_ver; /* firmware minor version */ + u32 fw_build; /* firmware build number */ +}; + +#define I40E_CLIENT_RESET_LEVEL_PF 1 +#define I40E_CLIENT_RESET_LEVEL_CORE 2 +#define I40E_CLIENT_VSI_FLAG_TCP_ENABLE BIT(1) + +struct i40e_ops { + /* setup_q_vector_list enables queues with a particular vector */ + int (*setup_qvlist)(struct i40e_info *ldev, struct i40e_client *client, + struct i40e_qvlist_info *qv_info); + + int (*virtchnl_send)(struct i40e_info *ldev, struct i40e_client *client, + u32 vf_id, u8 *msg, u16 len); + + /* If the PE Engine is unresponsive, RDMA driver can request a reset. + * The level helps determine the level of reset being requested. + */ + void (*request_reset)(struct i40e_info *ldev, + struct i40e_client *client, u32 level); + + /* API for the RDMA driver to set certain VSI flags that control + * PE Engine. + */ + int (*update_vsi_ctxt)(struct i40e_info *ldev, + struct i40e_client *client, + bool is_vf, u32 vf_id, + u32 flag, u32 valid_flag); + + int (*client_device_register)(struct i40e_info *ldev); + + void (*client_device_unregister)(struct i40e_info *ldev); + +}; + +struct i40e_client_ops { + /* Should be called from register_client() or whenever PF is ready + * to create a specific client instance. + */ + int (*open)(struct i40e_info *ldev, struct i40e_client *client); + + /* Should be called when netdev is unavailable or when unregister + * call comes in. If the close is happenening due to a reset being + * triggered set the reset bit to true. + */ + void (*close)(struct i40e_info *ldev, struct i40e_client *client, + bool reset); + + /* called when some l2 managed parameters changes - mtu */ + void (*l2_param_change)(struct i40e_info *ldev, + struct i40e_client *client, + struct i40e_params *params); + + int (*virtchnl_receive)(struct i40e_info *ldev, + struct i40e_client *client, u32 vf_id, + u8 *msg, u16 len); + + /* called when a VF is reset by the PF */ + void (*vf_reset)(struct i40e_info *ldev, + struct i40e_client *client, u32 vf_id); + + /* called when the number of VFs changes */ + void (*vf_enable)(struct i40e_info *ldev, + struct i40e_client *client, u32 num_vfs); + + /* returns true if VF is capable of specified offload */ + int (*vf_capable)(struct i40e_info *ldev, + struct i40e_client *client, u32 vf_id); +}; + +/* Client device */ +struct i40e_client_instance { + struct list_head list; + struct i40e_info lan_info; + struct i40e_client *client; + unsigned long state; +}; + +struct i40e_client { + struct list_head list; /* list of registered clients */ + char name[I40E_CLIENT_STR_LENGTH]; + struct i40e_client_version version; + unsigned long state; /* client state */ + atomic_t ref_cnt; /* Count of all the client devices of this kind */ + u32 flags; +#define I40E_CLIENT_FLAGS_LAUNCH_ON_PROBE BIT(0) +#define I40E_TX_FLAGS_NOTIFY_OTHER_EVENTS BIT(2) + u8 type; +#define I40E_CLIENT_IWARP 0 + const struct i40e_client_ops *ops; /* client ops provided by the client */ +}; + +static inline bool i40e_client_is_registered(struct i40e_client *client) +{ + return test_bit(__I40E_CLIENT_REGISTERED, &client->state); +} + +/* used by clients */ +int i40e_register_client(struct i40e_client *client); +int i40e_unregister_client(struct i40e_client *client); + +#endif /* _I40E_CLIENT_H_ */ -- 1.8.3.1