39 static inline void msgb_init(struct msgbuf *msgb, u8 *ptr, size_t cap)  in msgb_init()  argument
41 	msgb->begin = ptr;  in msgb_init()
42 	msgb->end = ptr + cap;  in msgb_init()
43 	msgb->ptr = ptr;  in msgb_init()
50 static inline size_t msgb_bytes_used(const struct msgbuf *msgb)  in msgb_bytes_used()  argument
52 	return msgb->ptr - msgb->begin;  in msgb_bytes_used()
55 static inline void __msgb_push_u8(struct msgbuf *msgb, u8 value)  in __msgb_push_u8()  argument
57 	*msgb->ptr = value;  in __msgb_push_u8()
58 	msgb->ptr += sizeof(u8);  in __msgb_push_u8()
61 static inline void __msgb_push_u16(struct msgbuf *msgb, u16 value)  in __msgb_push_u16()  argument
63 	put_unaligned_le16(value, msgb->ptr);  in __msgb_push_u16()
64 	msgb->ptr += sizeof(u16);  in __msgb_push_u16()
72 static inline void msgb_push_u16(struct msgbuf *msgb, u16 value)  in msgb_push_u16()  argument
74 	if (WARN_ON(msgb->ptr + sizeof(u16) > msgb->end))  in msgb_push_u16()
77 	__msgb_push_u16(msgb, value);  in msgb_push_u16()
84 static inline void msgb_push_syn(struct msgbuf *msgb)  in msgb_push_syn()  argument
86 	msgb_push_u16(msgb, SSH_MSG_SYN);  in msgb_push_syn()
95 static inline void msgb_push_buf(struct msgbuf *msgb, const u8 *buf, size_t len)  in msgb_push_buf()  argument
97 	msgb->ptr = memcpy(msgb->ptr, buf, len) + len;  in msgb_push_buf()
106 static inline void msgb_push_crc(struct msgbuf *msgb, const u8 *buf, size_t len)  in msgb_push_crc()  argument
108 	msgb_push_u16(msgb, ssh_crc(buf, len));  in msgb_push_crc()
118 static inline void msgb_push_frame(struct msgbuf *msgb, u8 ty, u16 len, u8 seq)  in msgb_push_frame()  argument
120 	u8 *const begin = msgb->ptr;  in msgb_push_frame()
122 	if (WARN_ON(msgb->ptr + sizeof(struct ssh_frame) > msgb->end))  in msgb_push_frame()
125 	__msgb_push_u8(msgb, ty);	/* Frame type. */  in msgb_push_frame()
126 	__msgb_push_u16(msgb, len);	/* Frame payload length. */  in msgb_push_frame()
127 	__msgb_push_u8(msgb, seq);	/* Frame sequence ID. */  in msgb_push_frame()
129 	msgb_push_crc(msgb, begin, msgb->ptr - begin);  in msgb_push_frame()
137 static inline void msgb_push_ack(struct msgbuf *msgb, u8 seq)  in msgb_push_ack()  argument
140 	msgb_push_syn(msgb);  in msgb_push_ack()
143 	msgb_push_frame(msgb, SSH_FRAME_TYPE_ACK, 0x00, seq);  in msgb_push_ack()
146 	msgb_push_crc(msgb, msgb->ptr, 0);  in msgb_push_ack()
153 static inline void msgb_push_nak(struct msgbuf *msgb)  in msgb_push_nak()  argument
156 	msgb_push_syn(msgb);  in msgb_push_nak()
159 	msgb_push_frame(msgb, SSH_FRAME_TYPE_NAK, 0x00, 0x00);  in msgb_push_nak()
162 	msgb_push_crc(msgb, msgb->ptr, 0);  in msgb_push_nak()
172 static inline void msgb_push_cmd(struct msgbuf *msgb, u8 seq, u16 rqid,  in msgb_push_cmd()  argument
179 	msgb_push_syn(msgb);  in msgb_push_cmd()
182 	msgb_push_frame(msgb, type, sizeof(struct ssh_command) + rqst->length, seq);  in msgb_push_cmd()
185 	if (WARN_ON(msgb->ptr + sizeof(struct ssh_command) > msgb->end))  in msgb_push_cmd()
188 	cmd = msgb->ptr;  in msgb_push_cmd()
190 	__msgb_push_u8(msgb, SSH_PLD_TYPE_CMD);		/* Payload type. */  in msgb_push_cmd()
191 	__msgb_push_u8(msgb, rqst->target_category);	/* Target category. */  in msgb_push_cmd()
192 	__msgb_push_u8(msgb, rqst->target_id);		/* Target ID (out). */  in msgb_push_cmd()
193 	__msgb_push_u8(msgb, 0x00);			/* Target ID (in). */  in msgb_push_cmd()
194 	__msgb_push_u8(msgb, rqst->instance_id);	/* Instance ID. */  in msgb_push_cmd()
195 	__msgb_push_u16(msgb, rqid);			/* Request ID. */  in msgb_push_cmd()
196 	__msgb_push_u8(msgb, rqst->command_id);		/* Command ID. */  in msgb_push_cmd()
199 	msgb_push_buf(msgb, rqst->payload, rqst->length);  in msgb_push_cmd()
202 	msgb_push_crc(msgb, cmd, msgb->ptr - cmd);  in msgb_push_cmd()