diff options
Diffstat (limited to 'ANDROID_3.4.5/include/linux/sunrpc/svc_rdma.h')
| -rw-r--r-- | ANDROID_3.4.5/include/linux/sunrpc/svc_rdma.h | 310 |
1 files changed, 0 insertions, 310 deletions
diff --git a/ANDROID_3.4.5/include/linux/sunrpc/svc_rdma.h b/ANDROID_3.4.5/include/linux/sunrpc/svc_rdma.h deleted file mode 100644 index 0b8e3e6b..00000000 --- a/ANDROID_3.4.5/include/linux/sunrpc/svc_rdma.h +++ /dev/null @@ -1,310 +0,0 @@ -/* - * Copyright (c) 2005-2006 Network Appliance, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the BSD-type - * license below: - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials provided - * with the distribution. - * - * Neither the name of the Network Appliance, Inc. nor the names of - * its contributors may be used to endorse or promote products - * derived from this software without specific prior written - * permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * Author: Tom Tucker <tom@opengridcomputing.com> - */ - -#ifndef SVC_RDMA_H -#define SVC_RDMA_H -#include <linux/sunrpc/xdr.h> -#include <linux/sunrpc/svcsock.h> -#include <linux/sunrpc/rpc_rdma.h> -#include <rdma/ib_verbs.h> -#include <rdma/rdma_cm.h> -#define SVCRDMA_DEBUG - -/* RPC/RDMA parameters and stats */ -extern unsigned int svcrdma_ord; -extern unsigned int svcrdma_max_requests; -extern unsigned int svcrdma_max_req_size; - -extern atomic_t rdma_stat_recv; -extern atomic_t rdma_stat_read; -extern atomic_t rdma_stat_write; -extern atomic_t rdma_stat_sq_starve; -extern atomic_t rdma_stat_rq_starve; -extern atomic_t rdma_stat_rq_poll; -extern atomic_t rdma_stat_rq_prod; -extern atomic_t rdma_stat_sq_poll; -extern atomic_t rdma_stat_sq_prod; - -#define RPCRDMA_VERSION 1 - -/* - * Contexts are built when an RDMA request is created and are a - * record of the resources that can be recovered when the request - * completes. - */ -struct svc_rdma_op_ctxt { - struct svc_rdma_op_ctxt *read_hdr; - struct svc_rdma_fastreg_mr *frmr; - int hdr_count; - struct xdr_buf arg; - struct list_head dto_q; - enum ib_wr_opcode wr_op; - enum ib_wc_status wc_status; - u32 byte_len; - struct svcxprt_rdma *xprt; - unsigned long flags; - enum dma_data_direction direction; - int count; - struct ib_sge sge[RPCSVC_MAXPAGES]; - struct page *pages[RPCSVC_MAXPAGES]; -}; - -/* - * NFS_ requests are mapped on the client side by the chunk lists in - * the RPCRDMA header. During the fetching of the RPC from the client - * and the writing of the reply to the client, the memory in the - * client and the memory in the server must be mapped as contiguous - * vaddr/len for access by the hardware. These data strucures keep - * these mappings. - * - * For an RDMA_WRITE, the 'sge' maps the RPC REPLY. For RDMA_READ, the - * 'sge' in the svc_rdma_req_map maps the server side RPC reply and the - * 'ch' field maps the read-list of the RPCRDMA header to the 'sge' - * mapping of the reply. - */ -struct svc_rdma_chunk_sge { - int start; /* sge no for this chunk */ - int count; /* sge count for this chunk */ -}; -struct svc_rdma_fastreg_mr { - struct ib_mr *mr; - void *kva; - struct ib_fast_reg_page_list *page_list; - int page_list_len; - unsigned long access_flags; - unsigned long map_len; - enum dma_data_direction direction; - struct list_head frmr_list; -}; -struct svc_rdma_req_map { - struct svc_rdma_fastreg_mr *frmr; - unsigned long count; - union { - struct kvec sge[RPCSVC_MAXPAGES]; - struct svc_rdma_chunk_sge ch[RPCSVC_MAXPAGES]; - }; -}; -#define RDMACTXT_F_FAST_UNREG 1 -#define RDMACTXT_F_LAST_CTXT 2 - -#define SVCRDMA_DEVCAP_FAST_REG 1 /* fast mr registration */ -#define SVCRDMA_DEVCAP_READ_W_INV 2 /* read w/ invalidate */ - -struct svcxprt_rdma { - struct svc_xprt sc_xprt; /* SVC transport structure */ - struct rdma_cm_id *sc_cm_id; /* RDMA connection id */ - struct list_head sc_accept_q; /* Conn. waiting accept */ - int sc_ord; /* RDMA read limit */ - int sc_max_sge; - - int sc_sq_depth; /* Depth of SQ */ - atomic_t sc_sq_count; /* Number of SQ WR on queue */ - - int sc_max_requests; /* Depth of RQ */ - int sc_max_req_size; /* Size of each RQ WR buf */ - - struct ib_pd *sc_pd; - - atomic_t sc_dma_used; - atomic_t sc_ctxt_used; - struct list_head sc_rq_dto_q; - spinlock_t sc_rq_dto_lock; - struct ib_qp *sc_qp; - struct ib_cq *sc_rq_cq; - struct ib_cq *sc_sq_cq; - struct ib_mr *sc_phys_mr; /* MR for server memory */ - u32 sc_dev_caps; /* distilled device caps */ - u32 sc_dma_lkey; /* local dma key */ - unsigned int sc_frmr_pg_list_len; - struct list_head sc_frmr_q; - spinlock_t sc_frmr_q_lock; - - spinlock_t sc_lock; /* transport lock */ - - wait_queue_head_t sc_send_wait; /* SQ exhaustion waitlist */ - unsigned long sc_flags; - struct list_head sc_dto_q; /* DTO tasklet I/O pending Q */ - struct list_head sc_read_complete_q; - struct work_struct sc_work; -}; -/* sc_flags */ -#define RDMAXPRT_RQ_PENDING 1 -#define RDMAXPRT_SQ_PENDING 2 -#define RDMAXPRT_CONN_PENDING 3 - -#define RPCRDMA_LISTEN_BACKLOG 10 -/* The default ORD value is based on two outstanding full-size writes with a - * page size of 4k, or 32k * 2 ops / 4k = 16 outstanding RDMA_READ. */ -#define RPCRDMA_ORD (64/4) -#define RPCRDMA_SQ_DEPTH_MULT 8 -#define RPCRDMA_MAX_THREADS 16 -#define RPCRDMA_MAX_REQUESTS 16 -#define RPCRDMA_MAX_REQ_SIZE 4096 - -/* svc_rdma_marshal.c */ -extern void svc_rdma_rcl_chunk_counts(struct rpcrdma_read_chunk *, - int *, int *); -extern int svc_rdma_xdr_decode_req(struct rpcrdma_msg **, struct svc_rqst *); -extern int svc_rdma_xdr_decode_deferred_req(struct svc_rqst *); -extern int svc_rdma_xdr_encode_error(struct svcxprt_rdma *, - struct rpcrdma_msg *, - enum rpcrdma_errcode, u32 *); -extern void svc_rdma_xdr_encode_write_list(struct rpcrdma_msg *, int); -extern void svc_rdma_xdr_encode_reply_array(struct rpcrdma_write_array *, int); -extern void svc_rdma_xdr_encode_array_chunk(struct rpcrdma_write_array *, int, - __be32, __be64, u32); -extern void svc_rdma_xdr_encode_reply_header(struct svcxprt_rdma *, - struct rpcrdma_msg *, - struct rpcrdma_msg *, - enum rpcrdma_proc); -extern int svc_rdma_xdr_get_reply_hdr_len(struct rpcrdma_msg *); - -/* svc_rdma_recvfrom.c */ -extern int svc_rdma_recvfrom(struct svc_rqst *); - -/* svc_rdma_sendto.c */ -extern int svc_rdma_sendto(struct svc_rqst *); - -/* svc_rdma_transport.c */ -extern int svc_rdma_send(struct svcxprt_rdma *, struct ib_send_wr *); -extern void svc_rdma_send_error(struct svcxprt_rdma *, struct rpcrdma_msg *, - enum rpcrdma_errcode); -struct page *svc_rdma_get_page(void); -extern int svc_rdma_post_recv(struct svcxprt_rdma *); -extern int svc_rdma_create_listen(struct svc_serv *, int, struct sockaddr *); -extern struct svc_rdma_op_ctxt *svc_rdma_get_context(struct svcxprt_rdma *); -extern void svc_rdma_put_context(struct svc_rdma_op_ctxt *, int); -extern void svc_rdma_unmap_dma(struct svc_rdma_op_ctxt *ctxt); -extern struct svc_rdma_req_map *svc_rdma_get_req_map(void); -extern void svc_rdma_put_req_map(struct svc_rdma_req_map *); -extern int svc_rdma_fastreg(struct svcxprt_rdma *, struct svc_rdma_fastreg_mr *); -extern struct svc_rdma_fastreg_mr *svc_rdma_get_frmr(struct svcxprt_rdma *); -extern void svc_rdma_put_frmr(struct svcxprt_rdma *, - struct svc_rdma_fastreg_mr *); -extern void svc_sq_reap(struct svcxprt_rdma *); -extern void svc_rq_reap(struct svcxprt_rdma *); -extern struct svc_xprt_class svc_rdma_class; -extern void svc_rdma_prep_reply_hdr(struct svc_rqst *); - -/* svc_rdma.c */ -extern int svc_rdma_init(void); -extern void svc_rdma_cleanup(void); - -/* - * Returns the address of the first read chunk or <nul> if no read chunk is - * present - */ -static inline struct rpcrdma_read_chunk * -svc_rdma_get_read_chunk(struct rpcrdma_msg *rmsgp) -{ - struct rpcrdma_read_chunk *ch = - (struct rpcrdma_read_chunk *)&rmsgp->rm_body.rm_chunks[0]; - - if (ch->rc_discrim == 0) - return NULL; - - return ch; -} - -/* - * Returns the address of the first read write array element or <nul> if no - * write array list is present - */ -static inline struct rpcrdma_write_array * -svc_rdma_get_write_array(struct rpcrdma_msg *rmsgp) -{ - if (rmsgp->rm_body.rm_chunks[0] != 0 - || rmsgp->rm_body.rm_chunks[1] == 0) - return NULL; - - return (struct rpcrdma_write_array *)&rmsgp->rm_body.rm_chunks[1]; -} - -/* - * Returns the address of the first reply array element or <nul> if no - * reply array is present - */ -static inline struct rpcrdma_write_array * -svc_rdma_get_reply_array(struct rpcrdma_msg *rmsgp) -{ - struct rpcrdma_read_chunk *rch; - struct rpcrdma_write_array *wr_ary; - struct rpcrdma_write_array *rp_ary; - - /* XXX: Need to fix when reply list may occur with read-list and/or - * write list */ - if (rmsgp->rm_body.rm_chunks[0] != 0 || - rmsgp->rm_body.rm_chunks[1] != 0) - return NULL; - - rch = svc_rdma_get_read_chunk(rmsgp); - if (rch) { - while (rch->rc_discrim) - rch++; - - /* The reply list follows an empty write array located - * at 'rc_position' here. The reply array is at rc_target. - */ - rp_ary = (struct rpcrdma_write_array *)&rch->rc_target; - - goto found_it; - } - - wr_ary = svc_rdma_get_write_array(rmsgp); - if (wr_ary) { - rp_ary = (struct rpcrdma_write_array *) - &wr_ary-> - wc_array[ntohl(wr_ary->wc_nchunks)].wc_target.rs_length; - - goto found_it; - } - - /* No read list, no write list */ - rp_ary = (struct rpcrdma_write_array *) - &rmsgp->rm_body.rm_chunks[2]; - - found_it: - if (rp_ary->wc_discrim == 0) - return NULL; - - return rp_ary; -} -#endif |