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-rw-r--r--net/sunrpc/xprtrdma/verbs.c52
-rw-r--r--net/sunrpc/xprtrdma/xprt_rdma.h1
2 files changed, 45 insertions, 8 deletions
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index 5f4c7b3..570f08d 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 +1459,11 @@ 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__,
+ seg->mr_dma, seg->mr_offset, seg->mr_dmalen);
+ }
}
static void
@@ -1469,7 +1483,8 @@ 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 +1499,7 @@ 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 +1510,45 @@ 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 +1577,9 @@ 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);
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h
index c7a7eba..cae761a 100644
--- a/net/sunrpc/xprtrdma/xprt_rdma.h
+++ b/net/sunrpc/xprtrdma/xprt_rdma.h
@@ -164,6 +164,7 @@ struct rpcrdma_mr_seg { /* chunk descriptors */
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;