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author | Andy Adamson <andros@netapp.com> | 2011-01-06 02:04:32 +0000 |
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committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-01-06 14:46:24 -0500 |
commit | c36fca52f5e4594ffd0ff175b328966b0d393184 (patch) | |
tree | 6d771744cc49f0edc0d2b6b2f9fe919163002346 /firmware/keyspan_pda | |
parent | 2c2618c6f29c41a0a966f14f05c8bf45fcabb750 (diff) | |
download | op-kernel-dev-c36fca52f5e4594ffd0ff175b328966b0d393184.zip op-kernel-dev-c36fca52f5e4594ffd0ff175b328966b0d393184.tar.gz |
NFS refactor nfs_find_client and reference client across callback processing
Fixes a bug where the nfs_client could be freed during callback processing.
Refactor nfs_find_client to use minorversion specific means to locate the
correct nfs_client structure.
In the NFS layer, V4.0 clients are found using the callback_ident field in the
CB_COMPOUND header. V4.1 clients are found using the sessionID in the
CB_SEQUENCE operation which is also compared against the sessionID associated
with the back channel thread after a successful CREATE_SESSION.
Each of these methods finds the one an only nfs_client associated
with the incoming callback request - so nfs_find_client_next is not needed.
In the RPC layer, the pg_authenticate call needs to find the nfs_client. For
the v4.0 callback service, the callback identifier has not been decoded so a
search by address, version, and minorversion is used. The sessionid for the
sessions based callback service has (usually) not been set for the
pg_authenticate on a CB_NULL call which can be sent prior to the return
of a CREATE_SESSION call, so the sessionid associated with the back channel
thread is not used to find the client in pg_authenticate for CB_NULL calls.
Pass the referenced nfs_client to each CB_COMPOUND operation being proceesed
via the new cb_process_state structure. The reference is held across
cb_compound processing.
Use the new cb_process_state struct to move the NFS4ERR_RETRY_UNCACHED_REP
processing from process_op into nfs4_callback_sequence where it belongs.
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'firmware/keyspan_pda')
0 files changed, 0 insertions, 0 deletions