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svcrdma: Make svc_rdma_send_error_msg() a global function

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Prepare for svc_rdma_send_error_msg() to be invoked from another
source file.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever
2020-03-25 14:41:46 -04:00
parent 605c61bee5
commit c65b326b1e
2 changed files with 22 additions and 8 deletions
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4
include/linux/sunrpc/svc_rdma.h
View File

@@ -195,6 +195,10 @@ extern int svc_rdma_map_reply_msg(struct svcxprt_rdma *rdma,
struct svc_rdma_send_ctxt *sctxt, struct svc_rdma_send_ctxt *sctxt,
const struct svc_rdma_recv_ctxt *rctxt, const struct svc_rdma_recv_ctxt *rctxt,
struct xdr_buf *xdr); struct xdr_buf *xdr);
extern void svc_rdma_send_error_msg(struct svcxprt_rdma *rdma,
struct svc_rdma_send_ctxt *sctxt,
struct svc_rdma_recv_ctxt *rctxt,
int status);
extern int svc_rdma_sendto(struct svc_rqst *); extern int svc_rdma_sendto(struct svc_rqst *);
extern int svc_rdma_read_payload(struct svc_rqst *rqstp, unsigned int offset, extern int svc_rdma_read_payload(struct svc_rqst *rqstp, unsigned int offset,
unsigned int length); unsigned int length);

26
net/sunrpc/xprtrdma/svc_rdma_sendto.c
View File

@@ -804,16 +804,25 @@ static int svc_rdma_send_reply_msg(struct svcxprt_rdma *rdma,
return svc_rdma_send(rdma, &sctxt->sc_send_wr); return svc_rdma_send(rdma, &sctxt->sc_send_wr);
} }
/* Given the client-provided Write and Reply chunks, the server was not /**
* able to form a complete reply. Return an RDMA_ERROR message so the * svc_rdma_send_error_msg - Send an RPC/RDMA v1 error response
* client can retire this RPC transaction. * @rdma: controlling transport context
* @sctxt: Send context for the response
* @rctxt: Receive context for incoming bad message
* @status: negative errno indicating error that occurred
* *
* Remote Invalidation is skipped for simplicity. * Given the client-provided Read, Write, and Reply chunks, the
* server was not able to parse the Call or form a complete Reply.
* Return an RDMA_ERROR message so the client can retire the RPC
* transaction.
*
* The caller does not have to release @sctxt. It is released by
* Send completion, or by this function on error.
*/ */
static void svc_rdma_send_error_msg(struct svcxprt_rdma *rdma, void svc_rdma_send_error_msg(struct svcxprt_rdma *rdma,
struct svc_rdma_send_ctxt *sctxt, struct svc_rdma_send_ctxt *sctxt,
struct svc_rdma_recv_ctxt *rctxt, struct svc_rdma_recv_ctxt *rctxt,
int status) int status)
{ {
__be32 *rdma_argp = rctxt->rc_recv_buf; __be32 *rdma_argp = rctxt->rc_recv_buf;
__be32 *p; __be32 *p;
@@ -852,6 +861,7 @@ static void svc_rdma_send_error_msg(struct svcxprt_rdma *rdma,
trace_svcrdma_err_chunk(*rdma_argp); trace_svcrdma_err_chunk(*rdma_argp);
} }
/* Remote Invalidation is skipped for simplicity. */
sctxt->sc_send_wr.num_sge = 1; sctxt->sc_send_wr.num_sge = 1;
sctxt->sc_send_wr.opcode = IB_WR_SEND; sctxt->sc_send_wr.opcode = IB_WR_SEND;
sctxt->sc_sges[0].length = sctxt->sc_hdrbuf.len; sctxt->sc_sges[0].length = sctxt->sc_hdrbuf.len;