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rpcrdma: Add RPCRDMA_HDRLEN_ERR 

Error headers are shorter than either RDMA_MSG or RDMA_NOMSG.

Since HDRLEN_MIN is already used in several other places that would
be annoying to change, add RPCRDMA_HDRLEN_ERR for the one or two
spots where the shorter length is needed.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Devesh Sharma <devesh.sharma@broadcom.com>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Chuck Lever 2016-03-04 11:28:09 -05:00 committed by Anna Schumaker
parent b892a699ce
commit d8647f2d3c
1 changed files with 1 additions and 0 deletions
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include/linux/sunrpc/rpc_rdma.h
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@ -102,6 +102,7 @@ struct rpcrdma_msg {
* Smallest RPC/RDMA header: rm_xid through rm_type, then rm_nochunks
*/
#define RPCRDMA_HDRLEN_MIN (sizeof(__be32) * 7)
#define RPCRDMA_HDRLEN_ERR (sizeof(__be32) * 5)
enum rpcrdma_errcode {
ERR_VERS = 1,