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author\"Talpey, Thomas\ <Thomas.Talpey@netapp.com>2007-09-10 13:49:41 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2007-10-09 17:18:00 -0400
commit2cf7ff7a37cc149bd59c4f3bad432f686a4619c8 (patch)
tree9752290f4a0cb00d10a1fae24db8ef85b85b84e7 /fs/nfs/super.c
parentc3a57ed7471a17b07844d531534d970b84b69faf (diff)
NFS: support RDMA mounts
Adds hooks to the string-based NFS mount to support an "rdma" protocol option. Signed-off-by: Tom Talpey <tmt@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/super.c')
-rw-r--r--fs/nfs/super.c21
1 files changed, 19 insertions, 2 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 347c36341e5..11ab7ff6e08 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -34,6 +34,7 @@
#include <linux/sunrpc/stats.h>
#include <linux/sunrpc/metrics.h>
#include <linux/sunrpc/xprtsock.h>
+#include <linux/sunrpc/xprtrdma.h>
#include <linux/nfs_fs.h>
#include <linux/nfs_mount.h>
#include <linux/nfs4_mount.h>
@@ -68,7 +69,7 @@ enum {
Opt_ac, Opt_noac,
Opt_lock, Opt_nolock,
Opt_v2, Opt_v3,
- Opt_udp, Opt_tcp,
+ Opt_udp, Opt_tcp, Opt_rdma,
Opt_acl, Opt_noacl,
Opt_rdirplus, Opt_nordirplus,
Opt_sharecache, Opt_nosharecache,
@@ -114,6 +115,7 @@ static match_table_t nfs_mount_option_tokens = {
{ Opt_v3, "v3" },
{ Opt_udp, "udp" },
{ Opt_tcp, "tcp" },
+ { Opt_rdma, "rdma" },
{ Opt_acl, "acl" },
{ Opt_noacl, "noacl" },
{ Opt_rdirplus, "rdirplus" },
@@ -153,7 +155,7 @@ static match_table_t nfs_mount_option_tokens = {
};
enum {
- Opt_xprt_udp, Opt_xprt_tcp,
+ Opt_xprt_udp, Opt_xprt_tcp, Opt_xprt_rdma,
Opt_xprt_err
};
@@ -161,6 +163,7 @@ enum {
static match_table_t nfs_xprt_protocol_tokens = {
{ Opt_xprt_udp, "udp" },
{ Opt_xprt_tcp, "tcp" },
+ { Opt_xprt_rdma, "rdma" },
{ Opt_xprt_err, NULL }
};
@@ -668,6 +671,12 @@ static int nfs_parse_mount_options(char *raw,
mnt->timeo = 600;
mnt->retrans = 2;
break;
+ case Opt_rdma:
+ mnt->flags |= NFS_MOUNT_TCP; /* for side protocols */
+ mnt->nfs_server.protocol = XPRT_TRANSPORT_RDMA;
+ mnt->timeo = 600;
+ mnt->retrans = 2;
+ break;
case Opt_acl:
mnt->flags &= ~NFS_MOUNT_NOACL;
break;
@@ -883,6 +892,13 @@ static int nfs_parse_mount_options(char *raw,
mnt->timeo = 600;
mnt->retrans = 2;
break;
+ case Opt_xprt_rdma:
+ /* vector side protocols to TCP */
+ mnt->flags |= NFS_MOUNT_TCP;
+ mnt->nfs_server.protocol = XPRT_TRANSPORT_RDMA;
+ mnt->timeo = 600;
+ mnt->retrans = 2;
+ break;
default:
goto out_unrec_xprt;
}
@@ -902,6 +918,7 @@ static int nfs_parse_mount_options(char *raw,
case Opt_xprt_tcp:
mnt->mount_server.protocol = XPRT_TRANSPORT_TCP;
break;
+ case Opt_xprt_rdma: /* not used for side protocols */
default:
goto out_unrec_xprt;
}