diff options
Diffstat (limited to 'net/sunrpc/xprtrdma/verbs.c')
| -rw-r--r-- | net/sunrpc/xprtrdma/verbs.c | 53 |
1 files changed, 45 insertions, 8 deletions
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c index 5f4c7b3bc711..d4297dc43dc4 100644 --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -144,6 +144,7 @@ rpcrdma_cq_async_error_upcall(struct ib_event *event, void *context) static inline void rpcrdma_event_process(struct ib_wc *wc) { + struct rpcrdma_mw *frmr; struct rpcrdma_rep *rep = (struct rpcrdma_rep *)(unsigned long) wc->wr_id; @@ -154,15 +155,23 @@ void rpcrdma_event_process(struct ib_wc *wc) return; if (IB_WC_SUCCESS != wc->status) { - dprintk("RPC: %s: %s WC status %X, connection lost\n", - __func__, (wc->opcode & IB_WC_RECV) ? "recv" : "send", - wc->status); + dprintk("RPC: %s: WC opcode %d status %X, connection lost\n", + __func__, wc->opcode, wc->status); rep->rr_len = ~0U; - rpcrdma_schedule_tasklet(rep); + if (wc->opcode != IB_WC_FAST_REG_MR && wc->opcode != IB_WC_LOCAL_INV) + rpcrdma_schedule_tasklet(rep); return; } switch (wc->opcode) { + case IB_WC_FAST_REG_MR: + frmr = (struct rpcrdma_mw *)(unsigned long)wc->wr_id; + frmr->r.frmr.state = FRMR_IS_VALID; + break; + case IB_WC_LOCAL_INV: + frmr = (struct rpcrdma_mw *)(unsigned long)wc->wr_id; + frmr->r.frmr.state = FRMR_IS_INVALID; + break; case IB_WC_RECV: rep->rr_len = wc->byte_len; ib_dma_sync_single_for_cpu( @@ -1450,6 +1459,12 @@ rpcrdma_map_one(struct rpcrdma_ia *ia, struct rpcrdma_mr_seg *seg, int writing) seg->mr_dma = ib_dma_map_single(ia->ri_id->device, seg->mr_offset, seg->mr_dmalen, seg->mr_dir); + if (ib_dma_mapping_error(ia->ri_id->device, seg->mr_dma)) { + dprintk("RPC: %s: mr_dma %llx mr_offset %p mr_dma_len %zu\n", + __func__, + (unsigned long long)seg->mr_dma, + seg->mr_offset, seg->mr_dmalen); + } } static void @@ -1469,7 +1484,8 @@ rpcrdma_register_frmr_external(struct rpcrdma_mr_seg *seg, struct rpcrdma_xprt *r_xprt) { struct rpcrdma_mr_seg *seg1 = seg; - struct ib_send_wr frmr_wr, *bad_wr; + struct ib_send_wr invalidate_wr, frmr_wr, *bad_wr, *post_wr; + u8 key; int len, pageoff; int i, rc; @@ -1484,6 +1500,7 @@ rpcrdma_register_frmr_external(struct rpcrdma_mr_seg *seg, rpcrdma_map_one(ia, seg, writing); seg1->mr_chunk.rl_mw->r.frmr.fr_pgl->page_list[i] = seg->mr_dma; len += seg->mr_len; + BUG_ON(seg->mr_len > PAGE_SIZE); ++seg; ++i; /* Check for holes */ @@ -1494,26 +1511,45 @@ 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)) { + dprintk("RPC: %s: frmr %x left valid, posting invalidate.\n", + __func__, + seg1->mr_chunk.rl_mw->r.frmr.fr_mr->rkey); + /* Invalidate before using. */ + memset(&invalidate_wr, 0, sizeof invalidate_wr); + invalidate_wr.wr_id = (unsigned long)(void *)seg1->mr_chunk.rl_mw; + invalidate_wr.next = &frmr_wr; + invalidate_wr.opcode = IB_WR_LOCAL_INV; + invalidate_wr.send_flags = IB_SEND_SIGNALED; + invalidate_wr.ex.invalidate_rkey = + seg1->mr_chunk.rl_mw->r.frmr.fr_mr->rkey; + DECR_CQCOUNT(&r_xprt->rx_ep); + post_wr = &invalidate_wr; + } else + post_wr = &frmr_wr; + /* Bump the key */ key = (u8)(seg1->mr_chunk.rl_mw->r.frmr.fr_mr->rkey & 0x000000FF); ib_update_fast_reg_key(seg1->mr_chunk.rl_mw->r.frmr.fr_mr, ++key); /* Prepare FRMR WR */ memset(&frmr_wr, 0, sizeof frmr_wr); + frmr_wr.wr_id = (unsigned long)(void *)seg1->mr_chunk.rl_mw; frmr_wr.opcode = IB_WR_FAST_REG_MR; - frmr_wr.send_flags = 0; /* unsignaled */ + frmr_wr.send_flags = IB_SEND_SIGNALED; frmr_wr.wr.fast_reg.iova_start = seg1->mr_dma; frmr_wr.wr.fast_reg.page_list = seg1->mr_chunk.rl_mw->r.frmr.fr_pgl; frmr_wr.wr.fast_reg.page_list_len = i; frmr_wr.wr.fast_reg.page_shift = PAGE_SHIFT; frmr_wr.wr.fast_reg.length = i << PAGE_SHIFT; + BUG_ON(frmr_wr.wr.fast_reg.length < len); frmr_wr.wr.fast_reg.access_flags = (writing ? IB_ACCESS_REMOTE_WRITE | IB_ACCESS_LOCAL_WRITE : IB_ACCESS_REMOTE_READ); frmr_wr.wr.fast_reg.rkey = seg1->mr_chunk.rl_mw->r.frmr.fr_mr->rkey; DECR_CQCOUNT(&r_xprt->rx_ep); - rc = ib_post_send(ia->ri_id->qp, &frmr_wr, &bad_wr); + rc = ib_post_send(ia->ri_id->qp, post_wr, &bad_wr); if (rc) { dprintk("RPC: %s: failed ib_post_send for register," @@ -1542,8 +1578,9 @@ rpcrdma_deregister_frmr_external(struct rpcrdma_mr_seg *seg, rpcrdma_unmap_one(ia, seg++); memset(&invalidate_wr, 0, sizeof invalidate_wr); + invalidate_wr.wr_id = (unsigned long)(void *)seg1->mr_chunk.rl_mw; invalidate_wr.opcode = IB_WR_LOCAL_INV; - invalidate_wr.send_flags = 0; /* unsignaled */ + invalidate_wr.send_flags = IB_SEND_SIGNALED; invalidate_wr.ex.invalidate_rkey = seg1->mr_chunk.rl_mw->r.frmr.fr_mr->rkey; DECR_CQCOUNT(&r_xprt->rx_ep); |