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authorChuck Lever <chuck.lever@oracle.com>2008-08-18 19:34:16 -0400
committerJ. Bruce Fields <bfields@citi.umich.edu>2008-09-29 18:13:38 -0400
commita26cfad6e0a308a2c68df1f1ef50aabd48b17e6d (patch)
tree9d200a635720bde73b66fd96e4db9e7ff9be3af7 /fs
parent7252d575ab0e8771269a3d245c36a05ace5152bd (diff)
SUNRPC: Support IPv6 when registering kernel RPC services
In order to advertise NFS-related services on IPv6 interfaces via rpcbind, the kernel RPC server implementation must use rpcb_v4_register() instead of rpcb_register(). A new kernel build option allows distributions to use the legacy v2 call until they integrate an appropriate user-space rpcbind daemon that can support IPv6 RPC services. I tried adding some automatic logic to fall back if registering with a v4 protocol request failed, but there are too many corner cases. So I just made it a compile-time switch that distributions can throw when they've replaced portmapper with rpcbind. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'fs')
-rw-r--r--fs/Kconfig22
1 files changed, 22 insertions, 0 deletions
diff --git a/fs/Kconfig b/fs/Kconfig
index c6ae4d4842eb..ed57a5a37250 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -1773,6 +1773,28 @@ config SUNRPC_XPRT_RDMA
1773 1773
1774 If unsure, say N. 1774 If unsure, say N.
1775 1775
1776config SUNRPC_REGISTER_V4
1777 bool "Register local RPC services via rpcbind v4 (EXPERIMENTAL)"
1778 depends on SUNRPC && EXPERIMENTAL
1779 default n
1780 help
1781 Sun added support for registering RPC services at an IPv6
1782 address by creating two new versions of the rpcbind protocol
1783 (RFC 1833).
1784
1785 This option enables support in the kernel RPC server for
1786 registering kernel RPC services via version 4 of the rpcbind
1787 protocol. If you enable this option, you must run a portmapper
1788 daemon that supports rpcbind protocol version 4.
1789
1790 Serving NFS over IPv6 from knfsd (the kernel's NFS server)
1791 requires that you enable this option and use a portmapper that
1792 supports rpcbind version 4.
1793
1794 If unsure, say N to get traditional behavior (register kernel
1795 RPC services using only rpcbind version 2). Distributions
1796 using the legacy Linux portmapper daemon must say N here.
1797
1776config RPCSEC_GSS_KRB5 1798config RPCSEC_GSS_KRB5
1777 tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)" 1799 tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
1778 depends on SUNRPC && EXPERIMENTAL 1800 depends on SUNRPC && EXPERIMENTAL