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svcrdma: Update the synopsis of svc_rdma_read_call_chunk()

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Since the RDMA Read I/O state is now contained in the recv_ctxt,
svc_rdma_read_call_chunk() can use that recv_ctxt to derive the
read_info rather than the other way around. This removes another
usage of the ri_readctxt field, enabling its removal in a
subsequent patch.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2023-12-04 09:58:13 -05:00
parent 740a3c895d
commit 23bab3b22d
1 changed files with 11 additions and 13 deletions
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24
net/sunrpc/xprtrdma/svc_rdma_rw.c
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@ -998,8 +998,8 @@ static int svc_rdma_read_chunk_range(struct svc_rqst *rqstp,
/**
* svc_rdma_read_call_chunk - Build RDMA Read WQEs to pull a Long Message
* @rdma: controlling transport
* @info: context for RDMA Reads
* @rqstp: RPC transaction context
* @head: context for ongoing I/O
*
* Return values:
* %0: RDMA Read WQEs were successfully built
@ -1008,10 +1008,9 @@ static int svc_rdma_read_chunk_range(struct svc_rqst *rqstp,
* %-ENOTCONN: posting failed (connection is lost),
* %-EIO: rdma_rw initialization failed (DMA mapping, etc).
*/
static int svc_rdma_read_call_chunk(struct svcxprt_rdma *rdma,
struct svc_rdma_read_info *info)
static int svc_rdma_read_call_chunk(struct svc_rqst *rqstp,
struct svc_rdma_recv_ctxt *head)
{
struct svc_rdma_recv_ctxt *head = info->ri_readctxt;
const struct svc_rdma_chunk *call_chunk =
pcl_first_chunk(&head->rc_call_pcl);
const struct svc_rdma_pcl *pcl = &head->rc_read_pcl;
@ -1020,19 +1019,18 @@ static int svc_rdma_read_call_chunk(struct svcxprt_rdma *rdma,
int ret;
if (pcl_is_empty(pcl))
return svc_rdma_build_read_chunk(info->ri_rqst, head,
call_chunk);
return svc_rdma_build_read_chunk(rqstp, head, call_chunk);
start = 0;
chunk = pcl_first_chunk(pcl);
length = chunk->ch_position;
ret = svc_rdma_read_chunk_range(info->ri_rqst, head, call_chunk,
ret = svc_rdma_read_chunk_range(rqstp, head, call_chunk,
start, length);
if (ret < 0)
return ret;
pcl_for_each_chunk(chunk, pcl) {
ret = svc_rdma_build_read_chunk(info->ri_rqst, head, chunk);
ret = svc_rdma_build_read_chunk(rqstp, head, chunk);
if (ret < 0)
return ret;
@ -1042,15 +1040,15 @@ static int svc_rdma_read_call_chunk(struct svcxprt_rdma *rdma,
start += length;
length = next->ch_position - head->rc_readbytes;
ret = svc_rdma_read_chunk_range(info->ri_rqst, head,
call_chunk, start, length);
ret = svc_rdma_read_chunk_range(rqstp, head, call_chunk,
start, length);
if (ret < 0)
return ret;
}
start += length;
length = call_chunk->ch_length - start;
return svc_rdma_read_chunk_range(info->ri_rqst, head, call_chunk,
return svc_rdma_read_chunk_range(rqstp, head, call_chunk,
start, length);
}
@ -1080,7 +1078,7 @@ static noinline int svc_rdma_read_special(struct svcxprt_rdma *rdma,
struct xdr_buf *buf = &info->ri_rqst->rq_arg;
int ret;
ret = svc_rdma_read_call_chunk(rdma, info);
ret = svc_rdma_read_call_chunk(info->ri_rqst, info->ri_readctxt);
if (ret < 0)
goto out;