diff options
| author | Chuck Lever <chuck.lever@oracle.com> | 2024-06-04 15:45:24 -0400 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2024-07-08 13:47:24 -0400 |
| commit | 7e86845a0346efc95fddaa97ce5cd6a8bda8c71c (patch) | |
| tree | 0467a224e178d9b99ae04327a5ded9843f0743e4 /include | |
| parent | acd9f2dd23c632568156217aac7a05f5a0313152 (diff) | |
rpcrdma: Implement generic device removal
Commit e87a911fed07 ("nvme-rdma: use ib_client API to detect device
removal") explains the benefits of handling device removal outside
of the CM event handler.
Sketch in an IB device removal notification mechanism that can be
used by both the client and server side RPC-over-RDMA transport
implementations.
Suggested-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/sunrpc/rdma_rn.h | 27 | ||||
| -rw-r--r-- | include/trace/events/rpcrdma.h | 34 |
2 files changed, 61 insertions, 0 deletions
diff --git a/include/linux/sunrpc/rdma_rn.h b/include/linux/sunrpc/rdma_rn.h new file mode 100644 index 000000000000..7d032ca057af --- /dev/null +++ b/include/linux/sunrpc/rdma_rn.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * * Copyright (c) 2024, Oracle and/or its affiliates. + */ + +#ifndef _LINUX_SUNRPC_RDMA_RN_H +#define _LINUX_SUNRPC_RDMA_RN_H + +#include <rdma/ib_verbs.h> + +/** + * rpcrdma_notification - request removal notification + */ +struct rpcrdma_notification { + void (*rn_done)(struct rpcrdma_notification *rn); + u32 rn_index; +}; + +int rpcrdma_rn_register(struct ib_device *device, + struct rpcrdma_notification *rn, + void (*done)(struct rpcrdma_notification *rn)); +void rpcrdma_rn_unregister(struct ib_device *device, + struct rpcrdma_notification *rn); +int rpcrdma_ib_client_register(void); +void rpcrdma_ib_client_unregister(void); + +#endif /* _LINUX_SUNRPC_RDMA_RN_H */ diff --git a/include/trace/events/rpcrdma.h b/include/trace/events/rpcrdma.h index 14392652273a..ecdaf088219d 100644 --- a/include/trace/events/rpcrdma.h +++ b/include/trace/events/rpcrdma.h @@ -2220,6 +2220,40 @@ TRACE_EVENT(svcrdma_sq_post_err, ) ); +DECLARE_EVENT_CLASS(rpcrdma_client_device_class, + TP_PROTO( + const struct ib_device *device + ), + + TP_ARGS(device), + + TP_STRUCT__entry( + __string(name, device->name) + ), + + TP_fast_assign( + __assign_str(name); + ), + + TP_printk("device=%s", + __get_str(name) + ) +); + +#define DEFINE_CLIENT_DEVICE_EVENT(name) \ + DEFINE_EVENT(rpcrdma_client_device_class, name, \ + TP_PROTO( \ + const struct ib_device *device \ + ), \ + TP_ARGS(device) \ + ) + +DEFINE_CLIENT_DEVICE_EVENT(rpcrdma_client_completion); +DEFINE_CLIENT_DEVICE_EVENT(rpcrdma_client_add_one); +DEFINE_CLIENT_DEVICE_EVENT(rpcrdma_client_remove_one); +DEFINE_CLIENT_DEVICE_EVENT(rpcrdma_client_wait_on); +DEFINE_CLIENT_DEVICE_EVENT(rpcrdma_client_remove_one_done); + #endif /* _TRACE_RPCRDMA_H */ #include <trace/define_trace.h> |