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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (c) 2025 Stefan Metzmacher
*/
#ifndef __FS_SMB_COMMON_SMBDIRECT_SMBDIRECT_SOCKET_H__
#define __FS_SMB_COMMON_SMBDIRECT_SMBDIRECT_SOCKET_H__
enum smbdirect_socket_status {
SMBDIRECT_SOCKET_CREATED,
SMBDIRECT_SOCKET_CONNECTING,
SMBDIRECT_SOCKET_CONNECTED,
SMBDIRECT_SOCKET_NEGOTIATE_FAILED,
SMBDIRECT_SOCKET_DISCONNECTING,
SMBDIRECT_SOCKET_DISCONNECTED,
SMBDIRECT_SOCKET_DESTROYED
};
struct smbdirect_socket {
enum smbdirect_socket_status status;
/* RDMA related */
struct {
struct rdma_cm_id *cm_id;
} rdma;
/* IB verbs related */
struct {
struct ib_pd *pd;
struct ib_cq *send_cq;
struct ib_cq *recv_cq;
/*
* shortcuts for rdma.cm_id->{qp,device};
*/
struct ib_qp *qp;
struct ib_device *dev;
} ib;
struct smbdirect_socket_parameters parameters;
/*
* The state for posted receive buffers
*/
struct {
/*
* The type of PDU we are expecting
*/
enum {
SMBDIRECT_EXPECT_NEGOTIATE_REQ = 1,
SMBDIRECT_EXPECT_NEGOTIATE_REP = 2,
SMBDIRECT_EXPECT_DATA_TRANSFER = 3,
} expected;
} recv_io;
};
struct smbdirect_recv_io {
struct smbdirect_socket *socket;
struct ib_cqe cqe;
struct ib_sge sge;
/* Link to free or reassembly list */
struct list_head list;
/* Indicate if this is the 1st packet of a payload */
bool first_segment;
/* SMBD packet header and payload follows this structure */
u8 packet[];
};
#endif /* __FS_SMB_COMMON_SMBDIRECT_SMBDIRECT_SOCKET_H__ */
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