diff options
Diffstat (limited to 'include/linux/sunrpc')
| -rw-r--r-- | include/linux/sunrpc/rpc_rdma.h | 74 | ||||
| -rw-r--r-- | include/linux/sunrpc/rpc_rdma_cid.h | 24 | ||||
| -rw-r--r-- | include/linux/sunrpc/svc_rdma.h | 17 | ||||
| -rw-r--r-- | include/linux/sunrpc/xdr.h | 26 | ||||
| -rw-r--r-- | include/linux/sunrpc/xprt.h | 1 |
5 files changed, 137 insertions, 5 deletions
diff --git a/include/linux/sunrpc/rpc_rdma.h b/include/linux/sunrpc/rpc_rdma.h index 320c672d84de..4af31bbc8802 100644 --- a/include/linux/sunrpc/rpc_rdma.h +++ b/include/linux/sunrpc/rpc_rdma.h @@ -124,4 +124,78 @@ rpcrdma_decode_buffer_size(u8 val) return ((unsigned int)val + 1) << 10; } +/** + * xdr_encode_rdma_segment - Encode contents of an RDMA segment + * @p: Pointer into a send buffer + * @handle: The RDMA handle to encode + * @length: The RDMA length to encode + * @offset: The RDMA offset to encode + * + * Return value: + * Pointer to the XDR position that follows the encoded RDMA segment + */ +static inline __be32 *xdr_encode_rdma_segment(__be32 *p, u32 handle, + u32 length, u64 offset) +{ + *p++ = cpu_to_be32(handle); + *p++ = cpu_to_be32(length); + return xdr_encode_hyper(p, offset); +} + +/** + * xdr_encode_read_segment - Encode contents of a Read segment + * @p: Pointer into a send buffer + * @position: The position to encode + * @handle: The RDMA handle to encode + * @length: The RDMA length to encode + * @offset: The RDMA offset to encode + * + * Return value: + * Pointer to the XDR position that follows the encoded Read segment + */ +static inline __be32 *xdr_encode_read_segment(__be32 *p, u32 position, + u32 handle, u32 length, + u64 offset) +{ + *p++ = cpu_to_be32(position); + return xdr_encode_rdma_segment(p, handle, length, offset); +} + +/** + * xdr_decode_rdma_segment - Decode contents of an RDMA segment + * @p: Pointer to the undecoded RDMA segment + * @handle: Upon return, the RDMA handle + * @length: Upon return, the RDMA length + * @offset: Upon return, the RDMA offset + * + * Return value: + * Pointer to the XDR item that follows the RDMA segment + */ +static inline __be32 *xdr_decode_rdma_segment(__be32 *p, u32 *handle, + u32 *length, u64 *offset) +{ + *handle = be32_to_cpup(p++); + *length = be32_to_cpup(p++); + return xdr_decode_hyper(p, offset); +} + +/** + * xdr_decode_read_segment - Decode contents of a Read segment + * @p: Pointer to the undecoded Read segment + * @position: Upon return, the segment's position + * @handle: Upon return, the RDMA handle + * @length: Upon return, the RDMA length + * @offset: Upon return, the RDMA offset + * + * Return value: + * Pointer to the XDR item that follows the Read segment + */ +static inline __be32 *xdr_decode_read_segment(__be32 *p, u32 *position, + u32 *handle, u32 *length, + u64 *offset) +{ + *position = be32_to_cpup(p++); + return xdr_decode_rdma_segment(p, handle, length, offset); +} + #endif /* _LINUX_SUNRPC_RPC_RDMA_H */ diff --git a/include/linux/sunrpc/rpc_rdma_cid.h b/include/linux/sunrpc/rpc_rdma_cid.h new file mode 100644 index 000000000000..be24ab2baa6a --- /dev/null +++ b/include/linux/sunrpc/rpc_rdma_cid.h @@ -0,0 +1,24 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * * Copyright (c) 2020, Oracle and/or its affiliates. + */ + +#ifndef RPC_RDMA_CID_H +#define RPC_RDMA_CID_H + +/* + * The rpc_rdma_cid struct records completion ID information. A + * completion ID matches an incoming Send or Receive completion + * to a Completion Queue and to a previous ib_post_*(). The ID + * can then be displayed in an error message or recorded in a + * trace record. + * + * This struct is shared between the server and client RPC/RDMA + * transport implementations. + */ +struct rpc_rdma_cid { + u32 ci_queue_id; + int ci_completion_id; +}; + +#endif /* RPC_RDMA_CID_H */ diff --git a/include/linux/sunrpc/svc_rdma.h b/include/linux/sunrpc/svc_rdma.h index 7ed82625dc0b..9dc3a3b88391 100644 --- a/include/linux/sunrpc/svc_rdma.h +++ b/include/linux/sunrpc/svc_rdma.h @@ -46,6 +46,7 @@ #include <linux/sunrpc/xdr.h> #include <linux/sunrpc/svcsock.h> #include <linux/sunrpc/rpc_rdma.h> +#include <linux/sunrpc/rpc_rdma_cid.h> #include <rdma/ib_verbs.h> #include <rdma/rdma_cm.h> @@ -109,6 +110,8 @@ struct svcxprt_rdma { struct work_struct sc_work; struct llist_head sc_recv_ctxts; + + atomic_t sc_completion_ids; }; /* sc_flags */ #define RDMAXPRT_CONN_PENDING 3 @@ -129,6 +132,7 @@ struct svc_rdma_recv_ctxt { struct list_head rc_list; struct ib_recv_wr rc_recv_wr; struct ib_cqe rc_cqe; + struct rpc_rdma_cid rc_cid; struct ib_sge rc_recv_sge; void *rc_recv_buf; struct xdr_buf rc_arg; @@ -147,6 +151,8 @@ struct svc_rdma_recv_ctxt { struct svc_rdma_send_ctxt { struct list_head sc_list; + struct rpc_rdma_cid sc_cid; + struct ib_send_wr sc_send_wr; struct ib_cqe sc_cqe; struct xdr_buf sc_hdrbuf; @@ -190,20 +196,21 @@ extern struct svc_rdma_send_ctxt * svc_rdma_send_ctxt_get(struct svcxprt_rdma *rdma); extern void svc_rdma_send_ctxt_put(struct svcxprt_rdma *rdma, struct svc_rdma_send_ctxt *ctxt); -extern int svc_rdma_send(struct svcxprt_rdma *rdma, struct ib_send_wr *wr); +extern int svc_rdma_send(struct svcxprt_rdma *rdma, + struct svc_rdma_send_ctxt *ctxt); extern int svc_rdma_map_reply_msg(struct svcxprt_rdma *rdma, struct svc_rdma_send_ctxt *sctxt, const struct svc_rdma_recv_ctxt *rctxt, struct xdr_buf *xdr); +extern void svc_rdma_send_error_msg(struct svcxprt_rdma *rdma, + struct svc_rdma_send_ctxt *sctxt, + struct svc_rdma_recv_ctxt *rctxt, + int status); extern int svc_rdma_sendto(struct svc_rqst *); extern int svc_rdma_read_payload(struct svc_rqst *rqstp, unsigned int offset, unsigned int length); /* svc_rdma_transport.c */ -extern int svc_rdma_create_listen(struct svc_serv *, int, struct sockaddr *); -extern void svc_sq_reap(struct svcxprt_rdma *); -extern void svc_rq_reap(struct svcxprt_rdma *); - extern struct svc_xprt_class svc_rdma_class; #ifdef CONFIG_SUNRPC_BACKCHANNEL extern struct svc_xprt_class svc_rdma_bc_class; diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h index 22c207b2425f..5a6a81b7cd9f 100644 --- a/include/linux/sunrpc/xdr.h +++ b/include/linux/sunrpc/xdr.h @@ -475,6 +475,32 @@ xdr_stream_encode_uint32_array(struct xdr_stream *xdr, } /** + * xdr_item_is_absent - symbolically handle XDR discriminators + * @p: pointer to undecoded discriminator + * + * Return values: + * %true if the following XDR item is absent + * %false if the following XDR item is present + */ +static inline bool xdr_item_is_absent(const __be32 *p) +{ + return *p == xdr_zero; +} + +/** + * xdr_item_is_present - symbolically handle XDR discriminators + * @p: pointer to undecoded discriminator + * + * Return values: + * %true if the following XDR item is present + * %false if the following XDR item is absent + */ +static inline bool xdr_item_is_present(const __be32 *p) +{ + return *p != xdr_zero; +} + +/** * xdr_stream_decode_u32 - Decode a 32-bit integer * @xdr: pointer to xdr_stream * @ptr: location to store integer diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h index e64bd8222f55..a603d48d2b2c 100644 --- a/include/linux/sunrpc/xprt.h +++ b/include/linux/sunrpc/xprt.h @@ -101,6 +101,7 @@ struct rpc_rqst { * used in the softirq. */ unsigned long rq_majortimeo; /* major timeout alarm */ + unsigned long rq_minortimeo; /* minor timeout alarm */ unsigned long rq_timeout; /* Current timeout value */ ktime_t rq_rtt; /* round-trip time */ unsigned int rq_retries; /* # of retries */ |