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SUNRPC: Remove rpc_xprt::tsh_size

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tsh_size was added to accommodate transports that send a pre-amble
before each RPC message. However, this assumes the pre-amble is
fixed in size, which isn't true for some transports. That makes
tsh_size not very generic.

Also I'd like to make the estimation of RPC send and receive
buffer sizes more precise. tsh_size doesn't currently appear to be
accounted for at all by call_allocate.

Therefore let's just remove the tsh_size concept, and make the only
transports that have a non-zero tsh_size employ a direct approach.

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 11:24:37 -05:00
committed by Anna Schumaker
parent 80125d4ae7
commit 067fb11b12
7 changed files with 65 additions and 58 deletions
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3
net/sunrpc/auth_gss/auth_gss.c
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@@ -1563,8 +1563,7 @@ gss_marshal(struct rpc_task *task, __be32 *p)
/* We compute the checksum for the verifier over the xdr-encoded bytes
* starting with the xid and ending at the end of the credential: */
iov.iov_base = xprt_skip_transport_header(req->rq_xprt,
req->rq_snd_buf.head[0].iov_base);
iov.iov_base = req->rq_snd_buf.head[0].iov_base;
iov.iov_len = (u8 *)p - (u8 *)iov.iov_base;
xdr_buf_from_iov(&iov, &verf_buf);