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author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-10-26 07:38:19 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-10-26 07:38:19 -0700 |
commit | da19a102ce87bf3e0a7fe277a659d1fc35330d6d (patch) | |
tree | a6c1d40ef544e812b31f4b5f497c20d449d45ec3 /include/rdma/ib_verbs.h | |
parent | e5f6d9afa3415104e402cd69288bb03f7165eeba (diff) | |
parent | a60109dc9a954ef9eddba6577e2d2e9e7952e487 (diff) | |
download | linux-stable-da19a102ce87bf3e0a7fe277a659d1fc35330d6d.tar.gz linux-stable-da19a102ce87bf3e0a7fe277a659d1fc35330d6d.tar.bz2 linux-stable-da19a102ce87bf3e0a7fe277a659d1fc35330d6d.zip |
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe:
"This has been a smaller cycle with many of the commits being smallish
code fixes and improvements across the drivers.
- Driver updates for bnxt_re, cxgb4, hfi1, hns, mlx5, nes, qedr, and
rxe
- Memory window support in hns
- mlx5 user API 'flow mutate/steering' allows accessing the full
packet mangling and matching machinery from user space
- Support inter-working with verbs API calls in the 'devx' mlx5 user
API, and provide options to use devx with less privilege
- Modernize the use of syfs and the device interface to use attribute
groups and cdev properly for uverbs, and clean up some of the core
code's device list management
- More progress on net namespaces for RDMA devices
- Consolidate driver BAR mmapping support into core code helpers and
rework how RDMA holds poitners to mm_struct for get_user_pages
cases
- First pass to use 'dev_name' instead of ib_device->name
- Device renaming for RDMA devices"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (242 commits)
IB/mlx5: Add support for extended atomic operations
RDMA/core: Fix comment for hw stats init for port == 0
RDMA/core: Refactor ib_register_device() function
RDMA/core: Fix unwinding flow in case of error to register device
ib_srp: Remove WARN_ON in srp_terminate_io()
IB/mlx5: Allow scatter to CQE without global signaled WRs
IB/mlx5: Verify that driver supports user flags
IB/mlx5: Support scatter to CQE for DC transport type
RDMA/drivers: Use core provided API for registering device attributes
RDMA/core: Allow existing drivers to set one sysfs group per device
IB/rxe: Remove unnecessary enum values
RDMA/umad: Use kernel API to allocate umad indexes
RDMA/uverbs: Use kernel API to allocate uverbs indexes
RDMA/core: Increase total number of RDMA ports across all devices
IB/mlx4: Add port and TID to MAD debug print
IB/mlx4: Enable debug print of SMPs
RDMA/core: Rename ports_parent to ports_kobj
RDMA/core: Do not expose unsupported counters
IB/mlx4: Refer to the device kobject instead of ports_parent
RDMA/nldev: Allow IB device rename through RDMA netlink
...
Diffstat (limited to 'include/rdma/ib_verbs.h')
-rw-r--r-- | include/rdma/ib_verbs.h | 149 |
1 files changed, 93 insertions, 56 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 0ed5d913a492..9c0c2132a2d6 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -69,8 +69,11 @@ #define IB_FW_VERSION_NAME_MAX ETHTOOL_FWVERS_LEN +struct ib_umem_odp; + extern struct workqueue_struct *ib_wq; extern struct workqueue_struct *ib_comp_wq; +extern struct workqueue_struct *ib_comp_unbound_wq; union ib_gid { u8 raw[16]; @@ -1137,7 +1140,9 @@ enum ib_qp_create_flags { */ struct ib_qp_init_attr { + /* Consumer's event_handler callback must not block */ void (*event_handler)(struct ib_event *, void *); + void *qp_context; struct ib_cq *send_cq; struct ib_cq *recv_cq; @@ -1146,7 +1151,7 @@ struct ib_qp_init_attr { struct ib_qp_cap cap; enum ib_sig_type sq_sig_type; enum ib_qp_type qp_type; - enum ib_qp_create_flags create_flags; + u32 create_flags; /* * Only needed for special QP types, or when using the RW API. @@ -1278,21 +1283,27 @@ struct ib_qp_attr { }; enum ib_wr_opcode { - IB_WR_RDMA_WRITE, - IB_WR_RDMA_WRITE_WITH_IMM, - IB_WR_SEND, - IB_WR_SEND_WITH_IMM, - IB_WR_RDMA_READ, - IB_WR_ATOMIC_CMP_AND_SWP, - IB_WR_ATOMIC_FETCH_AND_ADD, - IB_WR_LSO, - IB_WR_SEND_WITH_INV, - IB_WR_RDMA_READ_WITH_INV, - IB_WR_LOCAL_INV, - IB_WR_REG_MR, - IB_WR_MASKED_ATOMIC_CMP_AND_SWP, - IB_WR_MASKED_ATOMIC_FETCH_AND_ADD, + /* These are shared with userspace */ + IB_WR_RDMA_WRITE = IB_UVERBS_WR_RDMA_WRITE, + IB_WR_RDMA_WRITE_WITH_IMM = IB_UVERBS_WR_RDMA_WRITE_WITH_IMM, + IB_WR_SEND = IB_UVERBS_WR_SEND, + IB_WR_SEND_WITH_IMM = IB_UVERBS_WR_SEND_WITH_IMM, + IB_WR_RDMA_READ = IB_UVERBS_WR_RDMA_READ, + IB_WR_ATOMIC_CMP_AND_SWP = IB_UVERBS_WR_ATOMIC_CMP_AND_SWP, + IB_WR_ATOMIC_FETCH_AND_ADD = IB_UVERBS_WR_ATOMIC_FETCH_AND_ADD, + IB_WR_LSO = IB_UVERBS_WR_TSO, + IB_WR_SEND_WITH_INV = IB_UVERBS_WR_SEND_WITH_INV, + IB_WR_RDMA_READ_WITH_INV = IB_UVERBS_WR_RDMA_READ_WITH_INV, + IB_WR_LOCAL_INV = IB_UVERBS_WR_LOCAL_INV, + IB_WR_MASKED_ATOMIC_CMP_AND_SWP = + IB_UVERBS_WR_MASKED_ATOMIC_CMP_AND_SWP, + IB_WR_MASKED_ATOMIC_FETCH_AND_ADD = + IB_UVERBS_WR_MASKED_ATOMIC_FETCH_AND_ADD, + + /* These are kernel only and can not be issued by userspace */ + IB_WR_REG_MR = 0x20, IB_WR_REG_SIG_MR, + /* reserve values for low level drivers' internal use. * These values will not be used at all in the ib core layer. */ @@ -1485,26 +1496,15 @@ struct ib_ucontext { * it is set when we are closing the file descriptor and indicates * that mm_sem may be locked. */ - int closing; + bool closing; bool cleanup_retryable; - struct pid *tgid; #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING - struct rb_root_cached umem_tree; - /* - * Protects .umem_rbroot and tree, as well as odp_mrs_count and - * mmu notifiers registration. - */ - struct rw_semaphore umem_rwsem; - void (*invalidate_range)(struct ib_umem *umem, + void (*invalidate_range)(struct ib_umem_odp *umem_odp, unsigned long start, unsigned long end); - - struct mmu_notifier mn; - atomic_t notifier_count; - /* A list of umems that don't have private mmu notifier counters yet. */ - struct list_head no_private_counters; - int odp_mrs_count; + struct mutex per_mm_list_lock; + struct list_head per_mm_list; #endif struct ib_rdmacg_object cg_obj; @@ -1570,9 +1570,10 @@ struct ib_ah { typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context); enum ib_poll_context { - IB_POLL_DIRECT, /* caller context, no hw completions */ - IB_POLL_SOFTIRQ, /* poll from softirq context */ - IB_POLL_WORKQUEUE, /* poll from workqueue */ + IB_POLL_DIRECT, /* caller context, no hw completions */ + IB_POLL_SOFTIRQ, /* poll from softirq context */ + IB_POLL_WORKQUEUE, /* poll from workqueue */ + IB_POLL_UNBOUND_WORKQUEUE, /* poll from unbound workqueue */ }; struct ib_cq { @@ -1589,6 +1590,7 @@ struct ib_cq { struct irq_poll iop; struct work_struct work; }; + struct workqueue_struct *comp_wq; /* * Implementation details of the RDMA core, don't use in drivers: */ @@ -2263,10 +2265,11 @@ struct ib_device { struct list_head event_handler_list; spinlock_t event_handler_lock; - spinlock_t client_data_lock; + rwlock_t client_data_lock; struct list_head core_list; /* Access to the client_data_list is protected by the client_data_lock - * spinlock and the lists_rwsem read-write semaphore */ + * rwlock and the lists_rwsem read-write semaphore + */ struct list_head client_data_list; struct ib_cache cache; @@ -2550,7 +2553,13 @@ struct ib_device { struct module *owner; struct device dev; - struct kobject *ports_parent; + /* First group for device attributes, + * Second group for driver provided attributes (optional). + * It is NULL terminated array. + */ + const struct attribute_group *groups[3]; + + struct kobject *ports_kobj; struct list_head port_list; enum { @@ -2633,9 +2642,9 @@ void ib_dealloc_device(struct ib_device *device); void ib_get_device_fw_str(struct ib_device *device, char *str); -int ib_register_device(struct ib_device *device, - int (*port_callback)(struct ib_device *, - u8, struct kobject *)); +int ib_register_device(struct ib_device *device, const char *name, + int (*port_callback)(struct ib_device *, u8, + struct kobject *)); void ib_unregister_device(struct ib_device *device); int ib_register_client (struct ib_client *client); @@ -2645,6 +2654,28 @@ void *ib_get_client_data(struct ib_device *device, struct ib_client *client); void ib_set_client_data(struct ib_device *device, struct ib_client *client, void *data); +#if IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS) +int rdma_user_mmap_io(struct ib_ucontext *ucontext, struct vm_area_struct *vma, + unsigned long pfn, unsigned long size, pgprot_t prot); +int rdma_user_mmap_page(struct ib_ucontext *ucontext, + struct vm_area_struct *vma, struct page *page, + unsigned long size); +#else +static inline int rdma_user_mmap_io(struct ib_ucontext *ucontext, + struct vm_area_struct *vma, + unsigned long pfn, unsigned long size, + pgprot_t prot) +{ + return -EINVAL; +} +static inline int rdma_user_mmap_page(struct ib_ucontext *ucontext, + struct vm_area_struct *vma, struct page *page, + unsigned long size) +{ + return -EINVAL; +} +#endif + static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len) { return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0; @@ -2728,7 +2759,6 @@ static inline int ib_destroy_usecnt(atomic_t *usecnt, * @next_state: Next QP state * @type: QP type * @mask: Mask of supplied QP attributes - * @ll : link layer of port * * This function is a helper function that a low-level driver's * modify_qp method can use to validate the consumer's input. It @@ -2737,8 +2767,7 @@ static inline int ib_destroy_usecnt(atomic_t *usecnt, * and that the attribute mask supplied is allowed for the transition. */ bool ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, - enum ib_qp_type type, enum ib_qp_attr_mask mask, - enum rdma_link_layer ll); + enum ib_qp_type type, enum ib_qp_attr_mask mask); void ib_register_event_handler(struct ib_event_handler *event_handler); void ib_unregister_event_handler(struct ib_event_handler *event_handler); @@ -4167,20 +4196,6 @@ ib_get_vector_affinity(struct ib_device *device, int comp_vector) } -static inline void ib_set_flow(struct ib_uobject *uobj, struct ib_flow *ibflow, - struct ib_qp *qp, struct ib_device *device) -{ - uobj->object = ibflow; - ibflow->uobject = uobj; - - if (qp) { - atomic_inc(&qp->usecnt); - ibflow->qp = qp; - } - - ibflow->device = device; -} - /** * rdma_roce_rescan_device - Rescan all of the network devices in the system * and add their gids, as needed, to the relevant RoCE devices. @@ -4205,4 +4220,26 @@ int rdma_init_netdev(struct ib_device *device, u8 port_num, void (*setup)(struct net_device *), struct net_device *netdev); +/** + * rdma_set_device_sysfs_group - Set device attributes group to have + * driver specific sysfs entries at + * for infiniband class. + * + * @device: device pointer for which attributes to be created + * @group: Pointer to group which should be added when device + * is registered with sysfs. + * rdma_set_device_sysfs_group() allows existing drivers to expose one + * group per device to have sysfs attributes. + * + * NOTE: New drivers should not make use of this API; instead new device + * parameter should be exposed via netlink command. This API and mechanism + * exist only for existing drivers. + */ +static inline void +rdma_set_device_sysfs_group(struct ib_device *dev, + const struct attribute_group *group) +{ + dev->groups[1] = group; +} + #endif /* IB_VERBS_H */ |