kernel/linux.git/include/linux/sunrpc/xprtsock.h, branch v6.19.11

SUNRPC: Add a TCP-with-TLS RPC transport class

2023-06-19T16:28:10+00:00

Use the new TLS handshake API to enable the SunRPC client code to request a TLS handshake. This implements support for RFC 9289, only on TCP sockets. Upper layers such as NFS use RPC-with-TLS to protect in-transit traffic. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust

SUNRPC: Ignore data_ready callbacks during TLS handshakes

2023-06-19T16:19:16+00:00

The RPC header parser doesn't recognize TLS handshake traffic, so it will close the connection prematurely with an error. To avoid that, shunt the transport's data_ready callback when there is a TLS handshake in progress. The XPRT_SOCK_IGNORE_RECV flag will be toggled by code added in a subsequent patch. Signed-off-by: Chuck Lever Reviewed-by: Jeff Layton Signed-off-by: Trond Myklebust

SUNRPC: Do not dereference non-socket transports in sysfs

2022-03-25T17:22:58+00:00

Do not cast the struct xprt to a sock_xprt unless we know it is a UDP or TCP transport. Otherwise the call to lock the mutex will scribble over whatever structure is actually there. This has been seen to cause hard system lockups when the underlying transport was RDMA. Fixes: b49ea673e119 ("SUNRPC: lock against ->sock changing during sysfs read") Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust

SUNRPC: Replace internal use of SOCKWQ_ASYNC_NOSPACE

2022-03-22T19:52:55+00:00

The socket's SOCKWQ_ASYNC_NOSPACE can be cleared by various actors in the socket layer, so replace it with our own flag in the transport sock_state field. Reported-by: Chuck Lever Signed-off-by: Trond Myklebust

SUNRPC: Don't call connect() more than once on a TCP socket

2022-03-22T19:52:55+00:00

Avoid socket state races due to repeated calls to ->connect() using the same socket. If connect() returns 0 due to the connection having completed, but we are in fact in a closing state, then we may leave the XPRT_CONNECTING flag set on the transport. Reported-by: Enrico Scholz Fixes: 3be232f11a3c ("SUNRPC: Prevent immediate close+reconnect") Signed-off-by: Trond Myklebust

SUNRPC query transport's source port

2021-07-08T18:03:24+00:00

Provide ability to query transport's source port. Signed-off-by: Olga Kornievskaia Signed-off-by: Trond Myklebust

Merge tag 'nfsd-5.5' of git://linux-nfs.org/~bfields/linux

2019-12-08T00:56:00+00:00

Pull nfsd updates from Bruce Fields: "This is a relatively quiet cycle for nfsd, mainly various bugfixes. Possibly most interesting is Trond's fixes for some callback races that were due to my incomplete understanding of rpc client shutdown. Unfortunately at the last minute I've started noticing a new intermittent failure to send callbacks. As the logic seems basically correct, I'm leaving Trond's patches in for now, and hope to find a fix in the next week so I don't have to revert those patches" * tag 'nfsd-5.5' of git://linux-nfs.org/~bfields/linux: (24 commits) nfsd: depend on CRYPTO_MD5 for legacy client tracking NFSD fixing possible null pointer derefering in copy offload nfsd: check for EBUSY from vfs_rmdir/vfs_unink. nfsd: Ensure CLONE persists data and metadata changes to the target file SUNRPC: Fix backchannel latency metrics nfsd: restore NFSv3 ACL support nfsd: v4 support requires CRYPTO_SHA256 nfsd: Fix cld_net->cn_tfm initialization lockd: remove __KERNEL__ ifdefs sunrpc: remove __KERNEL__ ifdefs race in exportfs_decode_fh() nfsd: Drop LIST_HEAD where the variable it declares is never used. nfsd: document callback_wq serialization of callback code nfsd: mark cb path down on unknown errors nfsd: Fix races between nfsd4_cb_release() and nfsd4_shutdown_callback() nfsd: minor 4.1 callback cleanup SUNRPC: Fix svcauth_gss_proxy_init() SUNRPC: Trace gssproxy upcall results sunrpc: fix crash when cache_head become valid before update nfsd: remove private bin2hex implementation ...

sunrpc: remove KERNEL ifdefs

2019-11-12T16:43:29+00:00

Remove the __KERNEL__ ifdefs from the non-UAPI sunrpc headers, as those can't be included from user space programs. Signed-off-by: Christoph Hellwig Signed-off-by: J. Bruce Fields

SUNRPC: fix race to sk_err after xs_error_report

2019-10-10T20:14:28+00:00

Since commit 4f8943f80883 ("SUNRPC: Replace direct task wakeups from softirq context") there has been a race to the value of the sk_err if both XPRT_SOCK_WAKE_ERROR and XPRT_SOCK_WAKE_DISCONNECT are set. In that case, we may end up losing the sk_err value that existed when xs_error_report was called. Fix this by reverting to the previous behavior: instead of using SO_ERROR to retrieve the value at a later time (which might also return sk_err_soft), copy the sk_err value onto struct sock_xprt, and use that value to wake pending tasks. Signed-off-by: Benjamin Coddington Fixes: 4f8943f80883 ("SUNRPC: Replace direct task wakeups from softirq context") Signed-off-by: Anna Schumaker

SUNRPC: Replace direct task wakeups from softirq context

2019-07-06T18:54:48+00:00

Replace the direct task wakeups from inside a softirq context with wakeups from a process context. Signed-off-by: Trond Myklebust