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authorChuck Lever <chuck.lever@oracle.com>2019-02-11 11:25:36 -0500
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2019-02-14 11:48:36 -0500
commit35e77d21baa04b554bf3dc9a08dfa7e569286e51 (patch)
treed6e48672b6fbd6ce82ba47438295b18b53b2c4b0 /net/sunrpc/auth_unix.c
parenta00275baa68e1ee226cc659f54dc3a571f3ad600 (diff)
downloadlinux-35e77d21baa04b554bf3dc9a08dfa7e569286e51.tar.bz2
SUNRPC: Add rpc_auth::au_ralign field
Currently rpc_inline_rcv_pages() uses au_rslack to estimate the size of the upper layer reply header. This is fine for auth flavors where au_verfsize == au_rslack. However, some auth flavors have more going on. krb5i for example has two more words after the verifier, and another blob following the RPC message. The calculation involving au_rslack pushes the upper layer reply header too far into the rcv_buf. au_rslack is still valuable: it's the amount of buffer space needed for the reply, and is used when allocating the reply buffer. We'll keep that. But, add a new field that can be used to properly estimate the location of the upper layer header in each RPC reply, based on the auth flavor in use. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc/auth_unix.c')
-rw-r--r--net/sunrpc/auth_unix.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/sunrpc/auth_unix.c b/net/sunrpc/auth_unix.c
index a93c56442487..c048eb6deaaf 100644
--- a/net/sunrpc/auth_unix.c
+++ b/net/sunrpc/auth_unix.c
@@ -187,6 +187,7 @@ unx_validate(struct rpc_task *task, struct xdr_stream *xdr)
auth->au_verfsize = XDR_QUADLEN(size) + 2;
auth->au_rslack = XDR_QUADLEN(size) + 2;
+ auth->au_ralign = XDR_QUADLEN(size) + 2;
return 0;
}