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svcrdma: Refactor chunk list encoders

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Same idea as the receive-side changes I did a while back: use
xdr_stream helpers rather than open-coding the XDR chunk list
encoders. This builds the Reply transport header from beginning to
end without backtracking.

As additional clean-ups, fill in documenting comments for the XDR
encoders and sprinkle some trace points in the new encoding
functions.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever
2020-03-02 15:02:20 -05:00
parent 5c266df527
commit 6fd5034db4
4 changed files with 210 additions and 122 deletions
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2
include/linux/sunrpc/svc_rdma.h
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@@ -149,6 +149,8 @@ struct svc_rdma_send_ctxt {
struct list_head sc_list;
struct ib_send_wr sc_send_wr;
struct ib_cqe sc_cqe;
struct xdr_buf sc_hdrbuf;
struct xdr_stream sc_stream;
void *sc_xprt_buf;
int sc_page_count;
int sc_cur_sge_no;