xprtrdma: Add rdma6 option to support NFS/RDMA IPv6
RFC 5666: The "rdma" netid is to be used when IPv4 addressing is employed by the underlying transport, and "rdma6" for IPv6 addressing. Add mount -o proto=rdma6 option to support NFS/RDMA IPv6 addressing. Changes from v2: - Integrated comments from Chuck Level, Anna Schumaker, Trodt Myklebust - Add a little more to the patch description to describe NFS/RDMA IPv6 suggested by Chuck Level and Anna Schumaker - Removed duplicated rdma6 define - Remove Opt_xprt_rdma mountfamily since it doesn't support Signed-off-by: Shirley Ma <shirley.ma@oracle.com> Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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@ -191,6 +191,7 @@ static const match_table_t nfs_mount_option_tokens = {
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enum {
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Opt_xprt_udp, Opt_xprt_udp6, Opt_xprt_tcp, Opt_xprt_tcp6, Opt_xprt_rdma,
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Opt_xprt_rdma6,
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Opt_xprt_err
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};
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@ -201,6 +202,7 @@ static const match_table_t nfs_xprt_protocol_tokens = {
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{ Opt_xprt_tcp, "tcp" },
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{ Opt_xprt_tcp6, "tcp6" },
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{ Opt_xprt_rdma, "rdma" },
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{ Opt_xprt_rdma6, "rdma6" },
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{ Opt_xprt_err, NULL }
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};
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@ -1456,6 +1458,8 @@ static int nfs_parse_mount_options(char *raw,
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mnt->flags |= NFS_MOUNT_TCP;
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mnt->nfs_server.protocol = XPRT_TRANSPORT_TCP;
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break;
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case Opt_xprt_rdma6:
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protofamily = AF_INET6;
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case Opt_xprt_rdma:
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/* vector side protocols to TCP */
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mnt->flags |= NFS_MOUNT_TCP;
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