tree 77c2d789cacf667f54cd966b7727bb13cf1e7272
parent d31ae2548142b7cd12404929ef3a13ae27c9d961
author Chuck Lever <chuck.lever@oracle.com> 1501785003 -0400
committer Anna Schumaker <Anna.Schumaker@Netapp.com> 1502203920 -0400

xprtrdma: Add xdr_init_decode to rpcrdma_reply_handler()

Transport header decoding deals with untrusted input data, therefore
decoding this header needs to be hardened.

Adopt the same infrastructure that is used when XDR decoding NFS
replies. This is slightly more CPU-intensive than the replaced code,
but we're not adding new atomics, locking, or context switches. The
cost is manageable.

Start by initializing an xdr_stream in rpcrdma_reply_handler().

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>