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SUNRPC: Clean up svc_find_xprt() calling sequence

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Clean up: add documentating comment and use appropriate data types for
svc_find_xprt()'s arguments.

This also eliminates a mixed sign comparison: @port was an int, while
the return value of svc_xprt_local_port() is an unsigned short.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Chuck Lever 2009-03-18 20:45:58 -04:00 committed by Trond Myklebust
parent adbbe92956
commit 156e62094a
2 changed files with 13 additions and 6 deletions
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3
include/linux/sunrpc/svc_xprt.h
View file

@ -80,7 +80,8 @@ 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);
struct svc_xprt *svc_find_xprt(struct svc_serv *serv, const char *xcl_name,
const sa_family_t af, const unsigned short port);
int svc_xprt_names(struct svc_serv *serv, char *buf, int buflen);
static inline void svc_xprt_get(struct svc_xprt *xprt)

16
net/sunrpc/svc_xprt.c
View file

@ -1033,7 +1033,13 @@ static struct svc_deferred_req *svc_deferred_dequeue(struct svc_xprt *xprt)
return dr;
}
/*
/**
* svc_find_xprt - find an RPC transport instance
* @serv: pointer to svc_serv to search
* @xcl_name: C string containing transport's class name
* @af: Address family of transport's local address
* @port: transport's IP port number
*
* Return the transport instance pointer for the endpoint accepting
* connections/peer traffic from the specified transport class,
* address family and port.
@ -1042,14 +1048,14 @@ static struct svc_deferred_req *svc_deferred_dequeue(struct svc_xprt *xprt)
* wild-card, and will result in matching the first transport in the
* service's list that has a matching class name.
*/
struct svc_xprt *svc_find_xprt(struct svc_serv *serv, char *xcl_name,
int af, int port)
struct svc_xprt *svc_find_xprt(struct svc_serv *serv, const char *xcl_name,
const sa_family_t af, const unsigned short port)
{
struct svc_xprt *xprt;
struct svc_xprt *found = NULL;
/* Sanity check the args */
if (!serv || !xcl_name)
if (serv == NULL || xcl_name == NULL)
return found;
spin_lock_bh(&serv->sv_lock);
@ -1058,7 +1064,7 @@ struct svc_xprt *svc_find_xprt(struct svc_serv *serv, char *xcl_name,
continue;
if (af != AF_UNSPEC && af != xprt->xpt_local.ss_family)
continue;
if (port && port != svc_xprt_local_port(xprt))
if (port != 0 && port != svc_xprt_local_port(xprt))
continue;
found = xprt;
svc_xprt_get(xprt);