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smb: smbdirect: introduce smbdirect_mr_io.{kref,mutex} and SMBDIRECT_MR_DISABLED

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This will be used in the next commits in order to improve the
client code.

A broken connection can just disable the smbdirect_mr_io while
keeping the memory arround for the caller.

Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Stefan Metzmacher 2025-10-12 21:10:21 +02:00 committed by Steve French
parent 911063b590
commit e487f13cc9
1 changed files with 10 additions and 1 deletions
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11
fs/smb/common/smbdirect/smbdirect_socket.h
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@ -437,13 +437,22 @@ enum smbdirect_mr_state {
SMBDIRECT_MR_READY,
SMBDIRECT_MR_REGISTERED,
SMBDIRECT_MR_INVALIDATED,
SMBDIRECT_MR_ERROR
SMBDIRECT_MR_ERROR,
SMBDIRECT_MR_DISABLED
};
struct smbdirect_mr_io {
struct smbdirect_socket *socket;
struct ib_cqe cqe;
/*
* We can have up to two references:
* 1. by the connection
* 2. by the registration
*/
struct kref kref;
struct mutex mutex;
struct list_head list;
enum smbdirect_mr_state state;