/* non-zero when timer is set */ unsignedlong mkey_lease_timeout; unsignedlong trap_timeout;
__be64 gid_prefix; /* in network order */
__be64 mkey;
u64 tid;
u32 port_cap_flags;
u16 port_cap3_flags;
u32 pma_sample_start;
u32 pma_sample_interval;
__be16 pma_counter_select[5];
u16 pma_tag;
u16 mkey_lease_period;
u32 sm_lid;
u8 sm_sl;
u8 mkeyprot;
u8 subnet_timeout;
u8 vl_high_limit;
/* * Driver is expected to keep these up to date. These * counters are informational only and not required to be * completely accurate.
*/
u64 n_rc_resends;
u64 n_seq_naks;
u64 n_rdma_seq;
u64 n_rnr_naks;
u64 n_other_naks;
u64 n_loop_pkts;
u64 n_pkt_drops;
u64 n_vl15_dropped;
u64 n_rc_timeouts;
u64 n_dmawait;
u64 n_unaligned;
u64 n_rc_dupreq;
u64 n_rc_seqnak;
u64 n_rc_crwaits;
u16 pkey_violations;
u16 qkey_violations;
u16 mkey_violations;
/* Hot-path per CPU counters to avoid cacheline trading to update */
u64 z_rc_acks;
u64 z_rc_qacks;
u64 z_rc_delayed_comp;
u64 __percpu *rc_acks;
u64 __percpu *rc_qacks;
u64 __percpu *rc_delayed_comp;
void *priv; /* driver private data */
/* * The pkey table is allocated and maintained by the driver. Drivers * need to have access to this before registering with rdmav. However * rdmavt will need access to it so drivers need to provide this during * the attach port API call.
*/
u16 *pkey_table;
struct rvt_ah *sm_ah;
/* * Keep a list of traps that have not been repressed. They will be * resent based on trap_timer.
*/ struct trap_list trap_lists[RVT_MAX_TRAP_LISTS]; struct timer_list trap_timer;
};
#define RVT_CQN_MAX 16 /* maximum length of cq name */
/* * Things that are driver specific, module parameters in hfi1 and qib
*/ struct rvt_driver_params { struct ib_device_attr props;
/* * Anything driver specific that is not covered by props * For instance special module parameters. Goes here.
*/ unsignedint lkey_table_size; unsignedint qp_table_size; unsignedint sge_copy_mode; unsignedint wss_threshold; unsignedint wss_clean_period; int qpn_start; int qpn_inc; int qpn_res_start; int qpn_res_end; int nports; int npkeys; int node; int psn_mask; int psn_shift; int psn_modify_mask;
u32 core_cap_flags;
u32 max_mad_size;
u8 qos_shift;
u8 max_rdma_atomic;
u8 extra_rdma_atomic;
u8 reserved_operations;
};
/* * This structure is used by rvt_mmap() to validate an offset * when an mmap() request is made. The vm_area_struct then uses * this as its vm_private_data.
*/ struct rvt_mmap_info { struct list_head pending_mmaps; struct ib_ucontext *context; void *obj;
__u64 offset; struct kref ref;
u32 size;
};
/* memory working set size */ struct rvt_wss { unsignedlong *entries;
atomic_t total_count;
atomic_t clean_counter;
atomic_t clean_entry;
int threshold; int num_entries; long pages_mask; unsignedint clean_period;
};
struct rvt_dev_info; struct rvt_swqe; struct rvt_driver_provided { /* * Which functions are required depends on which verbs rdmavt is * providing and which verbs the driver is overriding. See * check_support() for details.
*/
/* hot path calldowns in a single cacheline */
/* * Give the driver a notice that there is send work to do. It is up to * the driver to generally push the packets out, this just queues the * work with the driver. There are two variants here. The no_lock * version requires the s_lock not to be held. The other assumes the * s_lock is held.
*/ bool (*schedule_send)(struct rvt_qp *qp); bool (*schedule_send_no_lock)(struct rvt_qp *qp);
/* * Driver specific work request setup and checking. * This function is allowed to perform any setup, checks, or * adjustments required to the SWQE in order to be usable by * underlying protocols. This includes private data structure * allocations.
*/ int (*setup_wqe)(struct rvt_qp *qp, struct rvt_swqe *wqe, bool *call_send);
/* * Sometimes rdmavt needs to kick the driver's send progress. That is * done by this call back.
*/ void (*do_send)(struct rvt_qp *qp);
/* * Returns a pointer to the underlying hardware's PCI device. This is * used to display information as to what hardware is being referenced * in an output message
*/ struct pci_dev * (*get_pci_dev)(struct rvt_dev_info *rdi);
/* * Allocate a private queue pair data structure for driver specific * information which is opaque to rdmavt. Errors are returned via * ERR_PTR(err). The driver is free to return NULL or a valid * pointer.
*/ void * (*qp_priv_alloc)(struct rvt_dev_info *rdi, struct rvt_qp *qp);
/* * Init a structure allocated with qp_priv_alloc(). This should be * called after all qp fields have been initialized in rdmavt.
*/ int (*qp_priv_init)(struct rvt_dev_info *rdi, struct rvt_qp *qp, struct ib_qp_init_attr *init_attr);
/* * Inform the driver the particular qp in question has been reset so * that it can clean up anything it needs to.
*/ void (*notify_qp_reset)(struct rvt_qp *qp);
/* * Get a path mtu from the driver based on qp attributes.
*/ int (*get_pmtu_from_attr)(struct rvt_dev_info *rdi, struct rvt_qp *qp, struct ib_qp_attr *attr);
/* * Notify driver that it needs to flush any outstanding IO requests that * are waiting on a qp.
*/ void (*flush_qp_waiters)(struct rvt_qp *qp);
/* * Notify driver to stop its queue of sending packets. Nothing else * should be posted to the queue pair after this has been called.
*/ void (*stop_send_queue)(struct rvt_qp *qp);
/* * Have the driver drain any in progress operations
*/ void (*quiesce_qp)(struct rvt_qp *qp);
/* * Inform the driver a qp has went to error state.
*/ void (*notify_error_qp)(struct rvt_qp *qp);
/* * Get an MTU for a qp.
*/
u32 (*mtu_from_qp)(struct rvt_dev_info *rdi, struct rvt_qp *qp,
u32 pmtu); /* * Convert an mtu to a path mtu
*/ int (*mtu_to_path_mtu)(u32 mtu);
/* * Get the guid of a port in big endian byte order
*/ int (*get_guid_be)(struct rvt_dev_info *rdi, struct rvt_ibport *rvp, int guid_index, __be64 *guid);
/* * Query driver for the state of the port.
*/ int (*query_port_state)(struct rvt_dev_info *rdi, u32 port_num, struct ib_port_attr *props);
/* * Tell driver to shutdown a port
*/ int (*shut_down_port)(struct rvt_dev_info *rdi, u32 port_num);
/* Tell driver to send a trap for changed port capabilities */ void (*cap_mask_chg)(struct rvt_dev_info *rdi, u32 port_num);
/* * The following functions can be safely ignored completely. Any use of * these is checked for NULL before blindly calling. Rdmavt should also * be functional if drivers omit these.
*/
/* Called to inform the driver that all qps should now be freed. */ unsigned (*free_all_qps)(struct rvt_dev_info *rdi);
/* Driver specific AH validation */ int (*check_ah)(struct ib_device *, struct rdma_ah_attr *);
/* Inform the driver a new AH has been created */ void (*notify_new_ah)(struct ib_device *, struct rdma_ah_attr *, struct rvt_ah *);
/* Let the driver pick the next queue pair number*/ int (*alloc_qpn)(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt, enum ib_qp_type type, u32 port_num);
/* Determine if its safe or allowed to modify the qp */ int (*check_modify_qp)(struct rvt_qp *qp, struct ib_qp_attr *attr, int attr_mask, struct ib_udata *udata);
/* Driver specific QP modification/notification-of */ void (*modify_qp)(struct rvt_qp *qp, struct ib_qp_attr *attr, int attr_mask, struct ib_udata *udata);
/* Notify driver a mad agent has been created */ void (*notify_create_mad_agent)(struct rvt_dev_info *rdi, int port_idx);
/* Notify driver a mad agent has been removed */ void (*notify_free_mad_agent)(struct rvt_dev_info *rdi, int port_idx);
/* Notify driver to restart rc */ void (*notify_restart_rc)(struct rvt_qp *qp, u32 psn, int wait);
/* Get and return CPU to pin CQ processing thread */ int (*comp_vect_cpu_lookup)(struct rvt_dev_info *rdi, int comp_vect);
};
struct rvt_dev_info { struct ib_device ibdev; /* Keep this first. Nothing above here */
/* * Prior to calling for registration the driver will be responsible for * allocating space for this structure. * * The driver will also be responsible for filling in certain members of * dparms.props. The driver needs to fill in dparms exactly as it would * want values reported to a ULP. This will be returned to the caller * in rdmavt's device. The driver should also therefore refrain from * modifying this directly after registration with rdmavt.
*/
/* Driver specific properties */ struct rvt_driver_params dparms;
/* post send table */ conststruct rvt_operation_params *post_parms;
/* CQ */
u32 n_cqs_allocated; /* number of CQs allocated for device */
spinlock_t n_cqs_lock; /* protect count of in use cqs */
/* Multicast */
u32 n_mcast_grps_allocated; /* number of mcast groups allocated */
spinlock_t n_mcast_grps_lock;
/* Memory Working Set Size */ struct rvt_wss *wss;
};
/** * rvt_set_ibdev_name - Craft an IB device name from client info * @rdi: pointer to the client rvt_dev_info structure * @name: client specific name * @unit: client specific unit number.
*/ staticinlinevoid rvt_set_ibdev_name(struct rvt_dev_info *rdi, constchar *fmt, constchar *name, constint unit)
{ /* * FIXME: rvt and its users want to touch the ibdev before * registration and have things like the name work. We don't have the * infrastructure in the core to support this directly today, hack it * to work by setting the name manually here.
*/
dev_set_name(&rdi->ibdev.dev, fmt, name, unit);
strscpy(rdi->ibdev.name, dev_name(&rdi->ibdev.dev), IB_DEVICE_NAME_MAX);
}
/** * rvt_get_ibdev_name - return the IB name * @rdi: rdmavt device * * Return the registered name of the device.
*/ staticinlineconstchar *rvt_get_ibdev_name(conststruct rvt_dev_info *rdi)
{ return dev_name(&rdi->ibdev.dev);
}
staticinlineunsigned rvt_get_npkeys(struct rvt_dev_info *rdi)
{ /* * All ports have same number of pkeys.
*/ return rdi->dparms.npkeys;
}
/* * Return the max atomic suitable for determining * the size of the ack ring buffer in a QP.
*/ staticinlineunsignedint rvt_max_atomic(struct rvt_dev_info *rdi)
{ return rdi->dparms.max_rdma_atomic +
rdi->dparms.extra_rdma_atomic + 1;
}
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