smb: smbdirect: introduce struct smbdirect_recv_io

[ Upstream commit 60812d2 ]

This will be used in client and server soon
in order to replace smbd_response/smb_direct_recvmsg.

Cc: Steve French <[email protected]>
Cc: Tom Talpey <[email protected]>
Cc: Long Li <[email protected]>
Cc: Namjae Jeon <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Stefan Metzmacher <[email protected]>
Signed-off-by: Steve French <[email protected]>
Stable-dep-of: f57e53e ("smb: client: let recv_done verify data_offset, data_length and remaining_data_length")
Signed-off-by: Sasha Levin <[email protected]>

Author: metze-samba

fs/smb/common/smbdirect/smbdirect_socket.h

@@ -54,4 +54,19 @@ struct smbdirect_socket {
 	} 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__ */