mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 21:54:06 +08:00
f13193f50b
The plan is to replace the local bespoke code that constructs and posts RDMA Read and Write Work Requests with calls to the rdma_rw API. This shares code with other RDMA-enabled ULPs that manages the gory details of buffer registration and posting Work Requests. Some design notes: o The structure of RPC-over-RDMA transport headers is flexible, allowing multiple segments per Reply with arbitrary alignment, each with a unique R_key. Write and Send WRs continue to be built and posted in separate code paths. However, one whole chunk (with one or more RDMA segments apiece) gets exactly one ib_post_send and one work completion. o svc_xprt reference counting is modified, since a chain of rdma_rw_ctx structs generates one completion, no matter how many Write WRs are posted. o The current code builds the transport header as it is construct- ing Write WRs. I've replaced that with marshaling of transport header data items in a separate step. This is because the exact structure of client-provided segments may not align with the components of the server's reply xdr_buf, or the pages in the page list. Thus parts of each client-provided segment may be written at different points in the send path. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
65 lines
1.7 KiB
Plaintext
65 lines
1.7 KiB
Plaintext
config SUNRPC
|
|
tristate
|
|
depends on MULTIUSER
|
|
|
|
config SUNRPC_GSS
|
|
tristate
|
|
select OID_REGISTRY
|
|
depends on MULTIUSER
|
|
|
|
config SUNRPC_BACKCHANNEL
|
|
bool
|
|
depends on SUNRPC
|
|
|
|
config SUNRPC_SWAP
|
|
bool
|
|
depends on SUNRPC
|
|
|
|
config RPCSEC_GSS_KRB5
|
|
tristate "Secure RPC: Kerberos V mechanism"
|
|
depends on SUNRPC && CRYPTO
|
|
depends on CRYPTO_MD5 && CRYPTO_DES && CRYPTO_CBC && CRYPTO_CTS
|
|
depends on CRYPTO_ECB && CRYPTO_HMAC && CRYPTO_SHA1 && CRYPTO_AES
|
|
depends on CRYPTO_ARC4
|
|
default y
|
|
select SUNRPC_GSS
|
|
help
|
|
Choose Y here to enable Secure RPC using the Kerberos version 5
|
|
GSS-API mechanism (RFC 1964).
|
|
|
|
Secure RPC calls with Kerberos require an auxiliary user-space
|
|
daemon which may be found in the Linux nfs-utils package
|
|
available from http://linux-nfs.org/. In addition, user-space
|
|
Kerberos support should be installed.
|
|
|
|
If unsure, say Y.
|
|
|
|
config SUNRPC_DEBUG
|
|
bool "RPC: Enable dprintk debugging"
|
|
depends on SUNRPC && SYSCTL
|
|
select DEBUG_FS
|
|
help
|
|
This option enables a sysctl-based debugging interface
|
|
that is be used by the 'rpcdebug' utility to turn on or off
|
|
logging of different aspects of the kernel RPC activity.
|
|
|
|
Disabling this option will make your kernel slightly smaller,
|
|
but makes troubleshooting NFS issues significantly harder.
|
|
|
|
If unsure, say Y.
|
|
|
|
config SUNRPC_XPRT_RDMA
|
|
tristate "RPC-over-RDMA transport"
|
|
depends on SUNRPC && INFINIBAND && INFINIBAND_ADDR_TRANS
|
|
default SUNRPC && INFINIBAND
|
|
select SG_POOL
|
|
help
|
|
This option allows the NFS client and server to use RDMA
|
|
transports (InfiniBand, iWARP, or RoCE).
|
|
|
|
To compile this support as a module, choose M. The module
|
|
will be called rpcrdma.ko.
|
|
|
|
If unsure, or you know there is no RDMA capability on your
|
|
hardware platform, say N.
|