From: Olga Kornievskaia kolga@netapp.com
commit 8c39076c276be0b31982e44654e2c2357473258a upstream.
RFC 7862 introduced a new flag that either client or server is allowed to set: EXCHGID4_FLAG_SUPP_FENCE_OPS.
Client needs to update its bitmask to allow for this flag value.
v2: changed minor version argument to unsigned int
Signed-off-by: Olga Kornievskaia kolga@netapp.com CC: stable@vger.kernel.org Signed-off-by: Anna Schumaker Anna.Schumaker@Netapp.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- fs/nfs/nfs4proc.c | 9 ++++++--- include/uapi/linux/nfs4.h | 3 +++ 2 files changed, 9 insertions(+), 3 deletions(-)
--- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -8052,9 +8052,11 @@ int nfs4_proc_secinfo(struct inode *dir, * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or * DS flags set. */ -static int nfs4_check_cl_exchange_flags(u32 flags) +static int nfs4_check_cl_exchange_flags(u32 flags, u32 version) { - if (flags & ~EXCHGID4_FLAG_MASK_R) + if (version >= 2 && (flags & ~EXCHGID4_2_FLAG_MASK_R)) + goto out_inval; + else if (version < 2 && (flags & ~EXCHGID4_FLAG_MASK_R)) goto out_inval; if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && (flags & EXCHGID4_FLAG_USE_NON_PNFS)) @@ -8467,7 +8469,8 @@ static int _nfs4_proc_exchange_id(struct if (status != 0) goto out;
- status = nfs4_check_cl_exchange_flags(resp->flags); + status = nfs4_check_cl_exchange_flags(resp->flags, + clp->cl_mvops->minor_version); if (status != 0) goto out;
--- a/include/uapi/linux/nfs4.h +++ b/include/uapi/linux/nfs4.h @@ -139,6 +139,8 @@
#define EXCHGID4_FLAG_UPD_CONFIRMED_REC_A 0x40000000 #define EXCHGID4_FLAG_CONFIRMED_R 0x80000000 + +#define EXCHGID4_FLAG_SUPP_FENCE_OPS 0x00000004 /* * Since the validity of these bits depends on whether * they're set in the argument or response, have separate @@ -146,6 +148,7 @@ */ #define EXCHGID4_FLAG_MASK_A 0x40070103 #define EXCHGID4_FLAG_MASK_R 0x80070103 +#define EXCHGID4_2_FLAG_MASK_R 0x80070107
#define SEQ4_STATUS_CB_PATH_DOWN 0x00000001 #define SEQ4_STATUS_CB_GSS_CONTEXTS_EXPIRING 0x00000002