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smb: smbdirect: introduce smbdirect_socket.rw_io.credits

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This will be used by the server to manage the state
for RDMA read/write requests.

Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Acked-by: 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 2025-08-14 11:41:59 +02:00 committed by Steve French
parent cce93d2d0c
commit 90255ed467
1 changed files with 24 additions and 0 deletions
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24
fs/smb/common/smbdirect/smbdirect_socket.h
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@ -159,6 +159,27 @@ struct smbdirect_socket {
bool full_packet_received;
} reassembly;
} recv_io;
/*
* The state for RDMA read/write requests on the server
*/
struct {
/*
* The credit state for the send side
*/
struct {
/*
* The maximum number of rw credits
*/
size_t max;
/*
* The number of pages per credit
*/
size_t num_pages;
atomic_t count;
wait_queue_head_t wait_queue;
} credits;
} rw_io;
};
static __always_inline void smbdirect_socket_init(struct smbdirect_socket *sc)
@ -184,6 +205,9 @@ static __always_inline void smbdirect_socket_init(struct smbdirect_socket *sc)
INIT_LIST_HEAD(&sc->recv_io.reassembly.list);
spin_lock_init(&sc->recv_io.reassembly.lock);
init_waitqueue_head(&sc->recv_io.reassembly.wait_queue);
atomic_set(&sc->rw_io.credits.count, 0);
init_waitqueue_head(&sc->rw_io.credits.wait_queue);
}
struct smbdirect_send_io {