Return-Path: linux-nfs-owner@vger.kernel.org Received: from mail-ie0-f177.google.com ([209.85.223.177]:62158 "EHLO mail-ie0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752427AbaFWWjw (ORCPT ); Mon, 23 Jun 2014 18:39:52 -0400 Subject: [PATCH v1 06/13] xprtrdma: Unclutter struct rpcrdma_mr_seg From: Chuck Lever To: linux-rdma@vger.kernel.org, linux-nfs@vger.kernel.org Date: Mon, 23 Jun 2014 18:39:50 -0400 Message-ID: <20140623223950.1634.11937.stgit@manet.1015granger.net> In-Reply-To: <20140623223201.1634.83888.stgit@manet.1015granger.net> References: <20140623223201.1634.83888.stgit@manet.1015granger.net> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Sender: linux-nfs-owner@vger.kernel.org List-ID: Clean ups: - make it obvious that the rl_mw field is a pointer -- allocated separately, not as part of struct rpcrdma_mr_seg - promote "struct {} frmr;" to a named type - promote the state enum to a named type - name the MW state field the same way other fields in rpcrdma_mw are named Signed-off-by: Chuck Lever --- net/sunrpc/xprtrdma/verbs.c | 6 +++-- net/sunrpc/xprtrdma/xprt_rdma.h | 44 +++++++++++++++++++++++++++++---------- 2 files changed, 36 insertions(+), 14 deletions(-) diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c index 451e100..e8ed81c 100644 --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -156,9 +156,9 @@ rpcrdma_sendcq_process_wc(struct ib_wc *wc) return; if (wc->opcode == IB_WC_FAST_REG_MR) - frmr->r.frmr.state = FRMR_IS_VALID; + frmr->r.frmr.fr_state = FRMR_IS_VALID; else if (wc->opcode == IB_WC_LOCAL_INV) - frmr->r.frmr.state = FRMR_IS_INVALID; + frmr->r.frmr.fr_state = FRMR_IS_INVALID; } static int @@ -1518,7 +1518,7 @@ rpcrdma_register_frmr_external(struct rpcrdma_mr_seg *seg, dprintk("RPC: %s: Using frmr %p to map %d segments\n", __func__, seg1->mr_chunk.rl_mw, i); - if (unlikely(seg1->mr_chunk.rl_mw->r.frmr.state == FRMR_IS_VALID)) { + if (unlikely(seg1->mr_chunk.rl_mw->r.frmr.fr_state == FRMR_IS_VALID)) { dprintk("RPC: %s: frmr %x left valid, posting invalidate.\n", __func__, seg1->mr_chunk.rl_mw->r.frmr.fr_mr->rkey); diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h index c270e59..28c8570 100644 --- a/net/sunrpc/xprtrdma/xprt_rdma.h +++ b/net/sunrpc/xprtrdma/xprt_rdma.h @@ -146,6 +146,38 @@ struct rpcrdma_rep { }; /* + * struct rpcrdma_mw - external memory region metadata + * + * An external memory region is any buffer or page that is registered + * on the fly (ie, not pre-registered). + * + * Each rpcrdma_buffer has a list of these anchored in rb_mws. During + * call_allocate, rpcrdma_buffer_get() assigns one to each segment in + * an rpcrdma_req. Then rpcrdma_register_external() grabs these to keep + * track of registration metadata while each RPC is pending. + * rpcrdma_deregister_external() uses this metadata to unmap and + * release these resources when an RPC is complete. + */ +enum rpcrdma_frmr_state { + FRMR_IS_INVALID, + FRMR_IS_VALID, +}; + +struct rpcrdma_frmr { + struct ib_fast_reg_page_list *fr_pgl; + struct ib_mr *fr_mr; + enum rpcrdma_frmr_state fr_state; +}; + +struct rpcrdma_mw { + union { + struct ib_fmr *fmr; + struct rpcrdma_frmr frmr; + } r; + struct list_head mw_list; +}; + +/* * struct rpcrdma_req -- structure central to the request/reply sequence. * * N of these are associated with a transport instance, and stored in @@ -172,17 +204,7 @@ struct rpcrdma_rep { struct rpcrdma_mr_seg { /* chunk descriptors */ union { /* chunk memory handles */ struct ib_mr *rl_mr; /* if registered directly */ - struct rpcrdma_mw { /* if registered from region */ - union { - struct ib_fmr *fmr; - struct { - struct ib_fast_reg_page_list *fr_pgl; - struct ib_mr *fr_mr; - enum { FRMR_IS_INVALID, FRMR_IS_VALID } state; - } frmr; - } r; - struct list_head mw_list; - } *rl_mw; + struct rpcrdma_mw *rl_mw; /* if registered from region */ } mr_chunk; u64 mr_base; /* registration result */ u32 mr_rkey; /* registration result */