From a217813f9067b785241cb7f31956e51d2071703a Mon Sep 17 00:00:00 2001 From: Tom Tucker Date: Sun, 30 Dec 2007 21:08:35 -0600 Subject: 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: 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: '-' 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 Acked-by: Neil Brown Reviewed-by: Chuck Lever Reviewed-by: Greg Banks Signed-off-by: J. Bruce Fields --- fs/lockd/svc.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) (limited to 'fs/lockd') 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; -- cgit v1.2.3