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SUNRPC: Clean up rpc_verify_header()

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- Recover some instruction count because I'm about to introduce a
  few xdr_inline_decode call sites
- Replace dprintk() call sites with trace points
- Reduce the hot path so it fits in fewer cachelines

I've also renamed it rpc_decode_header() to match everything else
in the RPC client.

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
2019-02-11 11:24:53 -05:00
committed by Anna Schumaker
parent e8680a24a2
commit 7f5667a5f8
3 changed files with 154 additions and 128 deletions
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7
include/linux/sunrpc/xdr.h
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@@ -92,6 +92,9 @@ xdr_buf_init(struct xdr_buf *buf, void *start, size_t len)
#define rpc_auth_gss cpu_to_be32(RPC_AUTH_GSS)
#define rpc_call cpu_to_be32(RPC_CALL)
#define rpc_reply cpu_to_be32(RPC_REPLY)
#define rpc_msg_accepted cpu_to_be32(RPC_MSG_ACCEPTED)
#define rpc_success cpu_to_be32(RPC_SUCCESS)
#define rpc_prog_unavail cpu_to_be32(RPC_PROG_UNAVAIL)
@@ -101,6 +104,9 @@ xdr_buf_init(struct xdr_buf *buf, void *start, size_t len)
#define rpc_system_err cpu_to_be32(RPC_SYSTEM_ERR)
#define rpc_drop_reply cpu_to_be32(RPC_DROP_REPLY)
#define rpc_mismatch cpu_to_be32(RPC_MISMATCH)
#define rpc_auth_error cpu_to_be32(RPC_AUTH_ERROR)
#define rpc_auth_ok cpu_to_be32(RPC_AUTH_OK)
#define rpc_autherr_badcred cpu_to_be32(RPC_AUTH_BADCRED)
#define rpc_autherr_rejectedcred cpu_to_be32(RPC_AUTH_REJECTEDCRED)
@@ -109,7 +115,6 @@ xdr_buf_init(struct xdr_buf *buf, void *start, size_t len)
#define rpc_autherr_tooweak cpu_to_be32(RPC_AUTH_TOOWEAK)
#define rpcsec_gsserr_credproblem cpu_to_be32(RPCSEC_GSS_CREDPROBLEM)
#define rpcsec_gsserr_ctxproblem cpu_to_be32(RPCSEC_GSS_CTXPROBLEM)
#define rpc_autherr_oldseqnum cpu_to_be32(101)
/*
* Miscellaneous XDR helper functions