Commit c238c4c0 authored by Chuck Lever's avatar Chuck Lever Committed by J. Bruce Fields

svcrdma: Clean up svc_rdma_get_inv_rkey()

Replace C structure-based XDR decoding with more portable code that
instead uses pointer arithmetic.

This is a refactoring change only.
Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
parent c55ab070
...@@ -189,32 +189,25 @@ static void svc_rdma_get_write_arrays(struct rpcrdma_msg *rmsgp, ...@@ -189,32 +189,25 @@ static void svc_rdma_get_write_arrays(struct rpcrdma_msg *rmsgp,
* Invalidate, and responder chooses one rkey to invalidate. * Invalidate, and responder chooses one rkey to invalidate.
* *
* Find a candidate rkey to invalidate when sending a reply. Picks the * Find a candidate rkey to invalidate when sending a reply. Picks the
* first rkey it finds in the chunks lists. * first R_key it finds in the chunk lists.
* *
* Returns zero if RPC's chunk lists are empty. * Returns zero if RPC's chunk lists are empty.
*/ */
static u32 svc_rdma_get_inv_rkey(struct rpcrdma_msg *rdma_argp, static u32 svc_rdma_get_inv_rkey(__be32 *rdma_argp,
struct rpcrdma_write_array *wr_ary, __be32 *wr_lst, __be32 *rp_ch)
struct rpcrdma_write_array *rp_ary)
{ {
struct rpcrdma_read_chunk *rd_ary; __be32 *p;
struct rpcrdma_segment *arg_ch;
rd_ary = (struct rpcrdma_read_chunk *)&rdma_argp->rm_body.rm_chunks[0];
if (rd_ary->rc_discrim != xdr_zero)
return be32_to_cpu(rd_ary->rc_target.rs_handle);
if (wr_ary && be32_to_cpu(wr_ary->wc_nchunks)) {
arg_ch = &wr_ary->wc_array[0].wc_target;
return be32_to_cpu(arg_ch->rs_handle);
}
if (rp_ary && be32_to_cpu(rp_ary->wc_nchunks)) {
arg_ch = &rp_ary->wc_array[0].wc_target;
return be32_to_cpu(arg_ch->rs_handle);
}
return 0; p = rdma_argp + rpcrdma_fixed_maxsz;
if (*p != xdr_zero)
p += 2;
else if (wr_lst && be32_to_cpup(wr_lst + 1))
p = wr_lst + 2;
else if (rp_ch && be32_to_cpup(rp_ch + 1))
p = rp_ch + 2;
else
return 0;
return be32_to_cpup(p);
} }
static int svc_rdma_dma_map_page(struct svcxprt_rdma *rdma, static int svc_rdma_dma_map_page(struct svcxprt_rdma *rdma,
...@@ -650,7 +643,9 @@ int svc_rdma_sendto(struct svc_rqst *rqstp) ...@@ -650,7 +643,9 @@ int svc_rdma_sendto(struct svc_rqst *rqstp)
inv_rkey = 0; inv_rkey = 0;
if (rdma->sc_snd_w_inv) if (rdma->sc_snd_w_inv)
inv_rkey = svc_rdma_get_inv_rkey(rdma_argp, wr_ary, rp_ary); inv_rkey = svc_rdma_get_inv_rkey(&rdma_argp->rm_xid,
(__be32 *)wr_ary,
(__be32 *)rp_ary);
/* Build an req vec for the XDR */ /* Build an req vec for the XDR */
vec = svc_rdma_get_req_map(rdma); vec = svc_rdma_get_req_map(rdma);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment