user/sven/linux.git/net/sunrpc/auth_generic.c, branch tmp/leds/core

SUNRPC: Fix a performance regression in the RPC authentication code

2008-11-20T21:17:40Z

Fix a regression reported by Max Kellermann whereby kernel profiling showed that his clients were spending 45% of their time in rpcauth_lookup_credcache. It turns out that although his processes had identical uid/gid/groups, generic_match() was failing to detect this, because the task->group_info pointers were not shared. This again lead to the creation of a huge number of identical credentials at the RPC layer. The regression is fixed by comparing the contents of task->group_info if the actual pointers are not identical. Signed-off-by: Trond Myklebust Signed-off-by: Linus Torvalds

SUNRPC: AUTH_SYS "machine creds" shouldn't use negative valued uid/gid

2008-05-18T18:18:27Z

Apparently this causes Solaris 10 servers to refuse our NFSv4 SETCLIENTID calls. Fall back to root creds for now, since most servers that care are very likely to have root squashing enabled. Signed-off-by: Trond Myklebust

NFSv4: Reintroduce machine creds

2008-04-19T20:54:56Z

We need to try to ensure that we always use the same credentials whenever we re-establish the clientid on the server. If not, the server won't recognise that we're the same client, and so may not allow us to recover state. Signed-off-by: Trond Myklebust

NFSv4: Don't use cred->cr_ops->cr_name in nfs4_proc_setclientid()

2008-04-19T20:54:53Z

With the recent change to generic creds, we can no longer use cred->cr_ops->cr_name to distinguish between RPCSEC_GSS principals and AUTH_SYS/AUTH_NULL identities. Replace it with the rpc_authops->au_name instead... Signed-off-by: Trond Myklebust

SUNRPC: Add an rpc_credop callback for binding a credential to an rpc_task

2008-03-14T17:42:41Z

We need the ability to treat 'generic' creds specially, since they want to bind instances of the auth cred instead of binding themselves. Signed-off-by: Trond Myklebust

SUNRPC: Add a generic RPC credential

2008-03-14T17:42:38Z

Add an rpc credential that is not tied to any particular auth mechanism, but that can be cached by NFS, and later used to look up a cred for whichever auth mechanism that turns out to be valid when the RPC call is being made. Signed-off-by: Trond Myklebust