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xprtrdma: Eliminate rpcrdma_ia::ri_device 

Clean up.

Since commit 54cbd6b0c6 ("xprtrdma: Delay DMA mapping Send and
Receive buffers"), a pointer to the device is now saved in each
regbuf when it is DMA mapped.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Chuck Lever 2019-04-24 09:40:04 -04:00 committed by Anna Schumaker
parent c209e49cea
commit f19bd0bbd3
3 changed files with 25 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
net/sunrpc/xprtrdma/frwr_ops.c
View File

@ -82,13 +82,13 @@
/**
* frwr_is_supported - Check if device supports FRWR
* @ia: interface adapter to check
* @device: interface adapter to check
*
* Returns true if device supports FRWR, otherwise false
*/
bool frwr_is_supported(struct rpcrdma_ia *ia)
bool frwr_is_supported(struct ib_device *device)
{
struct ib_device_attr *attrs = &ia->ri_device->attrs;
struct ib_device_attr *attrs = &device->attrs;
if (!(attrs->device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS))
goto out_not_supported;
@ -98,7 +98,7 @@ bool frwr_is_supported(struct rpcrdma_ia *ia)
out_not_supported:
pr_info("rpcrdma: 'frwr' mode is not supported by device %s\n",
ia->ri_device->name);
device->name);
return false;
}
@ -131,7 +131,7 @@ frwr_mr_recycle_worker(struct work_struct *work)
if (mr->mr_dir != DMA_NONE) {
trace_xprtrdma_mr_unmap(mr);
ib_dma_unmap_sg(r_xprt->rx_ia.ri_device,
ib_dma_unmap_sg(r_xprt->rx_ia.ri_id->device,
mr->mr_sg, mr->mr_nents, mr->mr_dir);
mr->mr_dir = DMA_NONE;
}
@ -211,7 +211,7 @@ out_list_err:
int frwr_open(struct rpcrdma_ia *ia, struct rpcrdma_ep *ep,
struct rpcrdma_create_data_internal *cdata)
{
struct ib_device_attr *attrs = &ia->ri_device->attrs;
struct ib_device_attr *attrs = &ia->ri_id->device->attrs;
int max_qp_wr, depth, delta;
ia->ri_mrtype = IB_MR_TYPE_MEM_REG;
@ -253,7 +253,7 @@ int frwr_open(struct rpcrdma_ia *ia, struct rpcrdma_ep *ep,
} while (delta > 0);
}
max_qp_wr = ia->ri_device->attrs.max_qp_wr;
max_qp_wr = ia->ri_id->device->attrs.max_qp_wr;
max_qp_wr -= RPCRDMA_BACKWARD_WRS;
max_qp_wr -= 1;
if (max_qp_wr < RPCRDMA_MIN_SLOT_TABLE)
@ -436,7 +436,8 @@ struct rpcrdma_mr_seg *frwr_map(struct rpcrdma_xprt *r_xprt,
}
mr->mr_dir = rpcrdma_data_dir(writing);
mr->mr_nents = ib_dma_map_sg(ia->ri_device, mr->mr_sg, i, mr->mr_dir);
mr->mr_nents =
ib_dma_map_sg(ia->ri_id->device, mr->mr_sg, i, mr->mr_dir);
if (!mr->mr_nents)
goto out_dmamap_err;

29
net/sunrpc/xprtrdma/verbs.c
View File

@ -250,7 +250,7 @@ rpcrdma_cm_event_handler(struct rdma_cm_id *id, struct rdma_cm_event *event)
case RDMA_CM_EVENT_DEVICE_REMOVAL:
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
pr_info("rpcrdma: removing device %s for %s:%s\n",
ia->ri_device->name,
ia->ri_id->device->name,
rpcrdma_addrstr(r_xprt), rpcrdma_portstr(r_xprt));
#endif
set_bit(RPCRDMA_IAF_REMOVING, &ia->ri_flags);
@ -259,7 +259,6 @@ rpcrdma_cm_event_handler(struct rdma_cm_id *id, struct rdma_cm_event *event)
wait_for_completion(&ia->ri_remove_done);
ia->ri_id = NULL;
ia->ri_device = NULL;
/* Return 1 to ensure the core destroys the id. */
return 1;
case RDMA_CM_EVENT_ESTABLISHED:
@ -294,7 +293,7 @@ disconnected:
dprintk("RPC: %s: %s:%s on %s/frwr: %s\n", __func__,
rpcrdma_addrstr(r_xprt), rpcrdma_portstr(r_xprt),
ia->ri_device->name, rdma_event_msg(event->event));
ia->ri_id->device->name, rdma_event_msg(event->event));
return 0;
}
@ -373,9 +372,8 @@ rpcrdma_ia_open(struct rpcrdma_xprt *xprt)
rc = PTR_ERR(ia->ri_id);
goto out_err;
}
ia->ri_device = ia->ri_id->device;
ia->ri_pd = ib_alloc_pd(ia->ri_device, 0);
ia->ri_pd = ib_alloc_pd(ia->ri_id->device, 0);
if (IS_ERR(ia->ri_pd)) {
rc = PTR_ERR(ia->ri_pd);
pr_err("rpcrdma: ib_alloc_pd() returned %d\n", rc);
@ -384,12 +382,12 @@ rpcrdma_ia_open(struct rpcrdma_xprt *xprt)
switch (xprt_rdma_memreg_strategy) {
case RPCRDMA_FRWR:
if (frwr_is_supported(ia))
if (frwr_is_supported(ia->ri_id->device))
break;
/*FALLTHROUGH*/
default:
pr_err("rpcrdma: Device %s does not support memreg mode %d\n",
ia->ri_device->name, xprt_rdma_memreg_strategy);
ia->ri_id->device->name, xprt_rdma_memreg_strategy);
rc = -EINVAL;
goto out_err;
}
@ -471,7 +469,6 @@ rpcrdma_ia_close(struct rpcrdma_ia *ia)
rdma_destroy_id(ia->ri_id);
}
ia->ri_id = NULL;
ia->ri_device = NULL;
/* If the pd is still busy, xprtrdma missed freeing a resource */
if (ia->ri_pd && !IS_ERR(ia->ri_pd))
@ -491,7 +488,7 @@ rpcrdma_ep_create(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia,
unsigned int max_sge;
int rc;
max_sge = min_t(unsigned int, ia->ri_device->attrs.max_send_sge,
max_sge = min_t(unsigned int, ia->ri_id->device->attrs.max_send_sge,
RPCRDMA_MAX_SEND_SGES);
if (max_sge < RPCRDMA_MIN_SEND_SGES) {
pr_warn("rpcrdma: HCA provides only %d send SGEs\n", max_sge);
@ -526,16 +523,16 @@ rpcrdma_ep_create(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia,
init_waitqueue_head(&ep->rep_connect_wait);
ep->rep_receive_count = 0;
sendcq = ib_alloc_cq(ia->ri_device, NULL,
sendcq = ib_alloc_cq(ia->ri_id->device, NULL,
ep->rep_attr.cap.max_send_wr + 1,
ia->ri_device->num_comp_vectors > 1 ? 1 : 0,
ia->ri_id->device->num_comp_vectors > 1 ? 1 : 0,
IB_POLL_WORKQUEUE);
if (IS_ERR(sendcq)) {
rc = PTR_ERR(sendcq);
goto out1;
}
recvcq = ib_alloc_cq(ia->ri_device, NULL,
recvcq = ib_alloc_cq(ia->ri_id->device, NULL,
ep->rep_attr.cap.max_recv_wr + 1,
0, IB_POLL_WORKQUEUE);
if (IS_ERR(recvcq)) {
@ -561,7 +558,7 @@ rpcrdma_ep_create(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia,
/* Client offers RDMA Read but does not initiate */
ep->rep_remote_cma.initiator_depth = 0;
ep->rep_remote_cma.responder_resources =
min_t(int, U8_MAX, ia->ri_device->attrs.max_qp_rd_atom);
min_t(int, U8_MAX, ia->ri_id->device->attrs.max_qp_rd_atom);
/* Limit transport retries so client can detect server
* GID changes quickly. RPC layer handles re-establishing
@ -673,7 +670,7 @@ rpcrdma_ep_reconnect(struct rpcrdma_xprt *r_xprt, struct rpcrdma_ep *ep,
*/
old = id;
rc = -ENETUNREACH;
if (ia->ri_device != id->device) {
if (ia->ri_id->device != id->device) {
pr_err("rpcrdma: can't reconnect on different device!\n");
goto out_destroy;
}
@ -1296,7 +1293,7 @@ rpcrdma_mr_unmap_and_put(struct rpcrdma_mr *mr)
if (mr->mr_dir != DMA_NONE) {
trace_xprtrdma_mr_unmap(mr);
ib_dma_unmap_sg(r_xprt->rx_ia.ri_device,
ib_dma_unmap_sg(r_xprt->rx_ia.ri_id->device,
mr->mr_sg, mr->mr_nents, mr->mr_dir);
mr->mr_dir = DMA_NONE;
}
@ -1429,7 +1426,7 @@ bool rpcrdma_regbuf_realloc(struct rpcrdma_regbuf *rb, size_t size, gfp_t flags)
bool __rpcrdma_regbuf_dma_map(struct rpcrdma_xprt *r_xprt,
struct rpcrdma_regbuf *rb)
{
struct ib_device *device = r_xprt->rx_ia.ri_device;
struct ib_device *device = r_xprt->rx_ia.ri_id->device;
if (rb->rg_direction == DMA_NONE)
return false;

7
net/sunrpc/xprtrdma/xprt_rdma.h
View File

@ -66,11 +66,8 @@
* Interface Adapter -- one per transport instance
*/
struct rpcrdma_ia {
struct ib_device *ri_device;
struct rdma_cm_id *ri_id;
struct ib_pd *ri_pd;
struct completion ri_done;
struct completion ri_remove_done;
int ri_async_rc;
unsigned int ri_max_segs;
unsigned int ri_max_frwr_depth;
@ -80,6 +77,8 @@ struct rpcrdma_ia {
bool ri_implicit_roundup;
enum ib_mr_type ri_mrtype;
unsigned long ri_flags;
struct completion ri_done;
struct completion ri_remove_done;
};
enum {
@ -585,7 +584,7 @@ rpcrdma_data_dir(bool writing)
/* Memory registration calls xprtrdma/frwr_ops.c
*/
bool frwr_is_supported(struct rpcrdma_ia *);
bool frwr_is_supported(struct ib_device *device);
int frwr_open(struct rpcrdma_ia *ia, struct rpcrdma_ep *ep,
struct rpcrdma_create_data_internal *cdata);
int frwr_init_mr(struct rpcrdma_ia *ia, struct rpcrdma_mr *mr);