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NFS test session trunking with exchange id

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Use an async exchange id call to test for session trunking

To conform with RFC 5661 section 18.35.4, the Non-Update on
Existing Clientid case, save the exchange id verifier in
cl_confirm and use it for the session trunking exhange id test.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Andy Adamson
2016-09-09 09:22:28 -04:00
committed by Anna Schumaker
parent 04ea1b3e6d
commit ad0849a7ef
2 changed files with 44 additions and 11 deletions
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10
fs/nfs/nfs4client.c
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@@ -637,9 +637,10 @@ out_scope_mismatch:
}
/**
* nfs4_detect_session_trunking - Checks for session trunking called
* after a successful EXCHANGE_ID testing a multi-addr connection to be
* potentially added as a session trunk
* nfs4_detect_session_trunking - Checks for session trunking.
*
* Called after a successful EXCHANGE_ID on a multi-addr connection.
* Upon success, add the transport.
*
* @clp: original mount nfs_client
* @res: result structure from an exchange_id using the original mount
@@ -673,6 +674,9 @@ int nfs4_detect_session_trunking(struct nfs_client *clp,
if (!nfs4_check_server_scope(clp->cl_serverscope, res->server_scope))
goto out_err;
/* Session trunking passed, add the xprt */
rpc_clnt_xprt_switch_add_xprt(clp->cl_rpcclient, xprt);
pr_info("NFS: %s: Session trunking succeeded for %s\n",
clp->cl_hostname,
xprt->address_strings[RPC_DISPLAY_ADDR]);