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xprtrdma: fix incorrect header size calculations 

[ Upstream commit 912288442c ]

Currently the header size calculations are using an assignment
operator instead of a += operator when accumulating the header
size leading to incorrect sizes.  Fix this by using the correct
operator.

Addresses-Coverity: ("Unused value")
Fixes: 302d3deb20 ("xprtrdma: Prevent inline overflow")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Colin Ian King 2020-07-15 17:26:04 +01:00 committed by Greg Kroah-Hartman
parent a75a8aabb2
commit c8a4452da9
1 changed files with 2 additions and 2 deletions
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4
net/sunrpc/xprtrdma/rpc_rdma.c
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@ -71,7 +71,7 @@ static unsigned int rpcrdma_max_call_header_size(unsigned int maxsegs)
size = RPCRDMA_HDRLEN_MIN; size = RPCRDMA_HDRLEN_MIN;
/* Maximum Read list size */ /* Maximum Read list size */
size = maxsegs * rpcrdma_readchunk_maxsz * sizeof(__be32); size += maxsegs * rpcrdma_readchunk_maxsz * sizeof(__be32);
/* Minimal Read chunk size */ /* Minimal Read chunk size */
size += sizeof(__be32); /* segment count */ size += sizeof(__be32); /* segment count */
@ -96,7 +96,7 @@ static unsigned int rpcrdma_max_reply_header_size(unsigned int maxsegs)
size = RPCRDMA_HDRLEN_MIN; size = RPCRDMA_HDRLEN_MIN;
/* Maximum Write list size */ /* Maximum Write list size */
size = sizeof(__be32); /* segment count */ size += sizeof(__be32); /* segment count */
size += maxsegs * rpcrdma_segment_maxsz * sizeof(__be32); size += maxsegs * rpcrdma_segment_maxsz * sizeof(__be32);
size += sizeof(__be32); /* list discriminator */ size += sizeof(__be32); /* list discriminator */