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svc: Add svc API that queries for a transport instance

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Add a new svc function that allows a service to query whether a
transport instance has already been created. This is used in lockd
to determine whether or not a transport needs to be created when
a lockd instance is brought up.

Specifying 0 for the address family or port is effectively a wild-card,
and will result in matching the first transport in the service's list
that has a matching class name.

Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
Acked-by: Neil Brown <neilb@suse.de>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Greg Banks <gnb@sgi.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
Tom Tucker
2007-12-30 21:08:33 -06:00
committed by J. Bruce Fields
parent dc9a16e49d
commit 7fcb98d58c
3 changed files with 38 additions and 14 deletions
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1
include/linux/sunrpc/svc_xprt.h
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@@ -80,6 +80,7 @@ void svc_close_xprt(struct svc_xprt *xprt);
void svc_delete_xprt(struct svc_xprt *xprt);
int svc_port_is_privileged(struct sockaddr *sin);
int svc_print_xprts(char *buf, int maxlen);
struct svc_xprt *svc_find_xprt(struct svc_serv *, char *, int, int);
static inline void svc_xprt_get(struct svc_xprt *xprt)
{