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authorTom Tucker <tom@opengridcomputing.com>2007-12-30 21:08:35 -0600
committerJ. Bruce Fields <bfields@citi.umich.edu>2008-02-01 16:42:13 -0500
commita217813f9067b785241cb7f31956e51d2071703a (patch)
tree5bda9ab6a461562975506d2100b16db19e3e628b /fs/lockd/svc.c
parent7fcb98d58cb4d18af6386f71025fc5192f25fbca (diff)
knfsd: Support adding transports by writing portlist file
Update the write handler for the portlist file to allow creating new listening endpoints on a transport. The general form of the string is: <transport_name><space><port number> For example: echo "tcp 2049" > /proc/fs/nfsd/portlist This is intended to support the creation of a listening endpoint for RDMA transports without adding #ifdef code to the nfssvc.c file. Transports can also be removed as follows: '-'<transport_name><space><port number> For example: echo "-tcp 2049" > /proc/fs/nfsd/portlist Attempting to add a listener with an invalid transport string results in EPROTONOSUPPORT and a perror string of "Protocol not supported". Attempting to remove an non-existent listener (.e.g. bad proto or port) results in ENOTCONN and a perror string of "Transport endpoint is not connected" 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>
Diffstat (limited to 'fs/lockd/svc.c')
-rw-r--r--fs/lockd/svc.c18
1 files changed, 13 insertions, 5 deletions
diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index 470af0138bb5..08226464e563 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -227,17 +227,25 @@ lockd(struct svc_rqst *rqstp)
static int make_socks(struct svc_serv *serv, int proto)
{
static int warned;
+ struct svc_xprt *xprt;
int err = 0;
- if (proto == IPPROTO_UDP || nlm_udpport)
- if (!svc_find_xprt(serv, "udp", 0, 0))
+ if (proto == IPPROTO_UDP || nlm_udpport) {
+ xprt = svc_find_xprt(serv, "udp", 0, 0);
+ if (!xprt)
err = svc_create_xprt(serv, "udp", nlm_udpport,
SVC_SOCK_DEFAULTS);
- if (err >= 0 && (proto == IPPROTO_TCP || nlm_tcpport))
- if (!svc_find_xprt(serv, "tcp", 0, 0))
+ else
+ svc_xprt_put(xprt);
+ }
+ if (err >= 0 && (proto == IPPROTO_TCP || nlm_tcpport)) {
+ xprt = svc_find_xprt(serv, "tcp", 0, 0);
+ if (!xprt)
err = svc_create_xprt(serv, "tcp", nlm_tcpport,
SVC_SOCK_DEFAULTS);
-
+ else
+ svc_xprt_put(xprt);
+ }
if (err >= 0) {
warned = 0;
err = 0;