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SUNRPC: Plumb an API for setting transport layer security

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Add an initial set of policies along with fields for upper layers to
pass the requested policy down to the transport layer.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Chuck Lever
2023-06-07 09:57:10 -04:00
committed by Trond Myklebust
parent 9e8ab85a7e
commit 5000531912
3 changed files with 23 additions and 0 deletions
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17
include/linux/sunrpc/xprt.h
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@@ -129,6 +129,21 @@ struct rpc_rqst {
#define rq_svec rq_snd_buf.head
#define rq_slen rq_snd_buf.len
/* RPC transport layer security policies */
enum xprtsec_policies {
RPC_XPRTSEC_NONE = 0,
RPC_XPRTSEC_TLS_ANON,
RPC_XPRTSEC_TLS_X509,
};
struct xprtsec_parms {
enum xprtsec_policies policy;
/* authentication material */
key_serial_t cert_serial;
key_serial_t privkey_serial;
};
struct rpc_xprt_ops {
void (*set_buffer_size)(struct rpc_xprt *xprt, size_t sndsize, size_t rcvsize);
int (*reserve_xprt)(struct rpc_xprt *xprt, struct rpc_task *task);
@@ -229,6 +244,7 @@ struct rpc_xprt {
*/
unsigned long bind_timeout,
reestablish_timeout;
struct xprtsec_parms xprtsec;
unsigned int connect_cookie; /* A cookie that gets bumped
every time the transport
is reconnected */
@@ -333,6 +349,7 @@ struct xprt_create {
struct svc_xprt *bc_xprt; /* NFSv4.1 backchannel */
struct rpc_xprt_switch *bc_xps;
unsigned int flags;
struct xprtsec_parms xprtsec;
};
struct xprt_class {