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xprtrdma: DMA map rr_rdma_buf as each rpcrdma_rep is created 

Clean up: This simplifies the logic in rpcrdma_post_recvs.

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 2020-01-03 11:57:09 -05:00 committed by Anna Schumaker
parent b7ff0185e9
commit e515dd9d76
1 changed files with 11 additions and 20 deletions
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31
net/sunrpc/xprtrdma/verbs.c
View File

@ -1110,8 +1110,9 @@ static void rpcrdma_reqs_reset(struct rpcrdma_xprt *r_xprt)
/* No locking needed here. This function is called only by the
* Receive completion handler.
*/
static struct rpcrdma_rep *rpcrdma_rep_create(struct rpcrdma_xprt *r_xprt,
bool temp)
static noinline
struct rpcrdma_rep *rpcrdma_rep_create(struct rpcrdma_xprt *r_xprt,
bool temp)
{
struct rpcrdma_rep *rep;
@ -1124,6 +1125,9 @@ static struct rpcrdma_rep *rpcrdma_rep_create(struct rpcrdma_xprt *r_xprt,
if (!rep->rr_rdmabuf)
goto out_free;
if (!rpcrdma_regbuf_dma_map(r_xprt, rep->rr_rdmabuf))
goto out_free_regbuf;
xdr_buf_init(&rep->rr_hdrbuf, rdmab_data(rep->rr_rdmabuf),
rdmab_length(rep->rr_rdmabuf));
rep->rr_cqe.done = rpcrdma_wc_receive;
@ -1136,6 +1140,8 @@ static struct rpcrdma_rep *rpcrdma_rep_create(struct rpcrdma_xprt *r_xprt,
list_add(&rep->rr_all, &r_xprt->rx_buf.rb_all_reps);
return rep;
out_free_regbuf:
rpcrdma_regbuf_free(rep->rr_rdmabuf);
out_free:
kfree(rep);
out:
@ -1537,7 +1543,7 @@ void rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp)
{
struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
struct rpcrdma_ep *ep = &r_xprt->rx_ep;
struct ib_recv_wr *i, *wr, *bad_wr;
struct ib_recv_wr *wr, *bad_wr;
struct rpcrdma_rep *rep;
int needed, count, rc;
@ -1564,23 +1570,15 @@ void rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp)
if (!rep)
break;
trace_xprtrdma_post_recv(rep);
rep->rr_recv_wr.next = wr;
wr = &rep->rr_recv_wr;
--needed;
++count;
}
if (!wr)
goto out;
for (i = wr; i; i = i->next) {
rep = container_of(i, struct rpcrdma_rep, rr_recv_wr);
if (!rpcrdma_regbuf_dma_map(r_xprt, rep->rr_rdmabuf))
goto release_wrs;
trace_xprtrdma_post_recv(rep);
++count;
}
rc = ib_post_recv(r_xprt->rx_ia.ri_id->qp, wr,
(const struct ib_recv_wr **)&bad_wr);
out:
@ -1597,11 +1595,4 @@ out:
}
ep->rep_receive_count += count;
return;
release_wrs:
for (i = wr; i;) {
rep = container_of(i, struct rpcrdma_rep, rr_recv_wr);
i = i->next;
rpcrdma_recv_buffer_put(rep);
}
}