2 * Copyright IBM Corp. 2007
13 #include <linux/interrupt.h>
14 #include <linux/skbuff.h>
18 * MPC external interface
19 * Note that ctc_mpc_xyz are called with a lock on ................
22 /* port_number is the mpc device 0, 1, 2 etc mpc2 is port_number 2 */
24 /* passive open Just wait for XID2 exchange */
25 extern int ctc_mpc_alloc_channel(int port,
26 void (*callback)(int port_num, int max_write_size));
27 /* active open Alloc then send XID2 */
28 extern void ctc_mpc_establish_connectivity(int port,
29 void (*callback)(int port_num, int rc, int max_write_size));
31 extern void ctc_mpc_dealloc_ch(int port);
32 extern void ctc_mpc_flow_control(int port, int flowc);
35 * other MPC Group prototypes and structures
38 #define ETH_P_SNA_DIX 0x80D5
41 * Declaration of an XID2
44 #define ALLZEROS 0x0000000000000000
49 #define XID2_WRITE_SIDE 0x04
50 #define XID2_READ_SIDE 0x05
73 char xid2_buffer[255 - (13 * sizeof(__u8) +
77 } __attribute__ ((packed));
79 #define XID2_LENGTH (sizeof(struct xid2))
84 #define TH_HAS_PDU 0xf0
85 #define TH_IS_XID 0x01
86 #define TH_SWEEP_REQ 0xfe
87 #define TH_SWEEP_RESP 0xff
89 #define TH_DATA_IS_XID 0x80
91 #define TH_DISCONTACT 0xc0
92 #define TH_SEG_BLK 0x20
93 #define TH_LAST_SEG 0x10
94 #define TH_PDU_PART 0x08
95 __u8 th_is_xid; /* is 0x01 if this is XID */
97 } __attribute__ ((packed));
102 } __attribute__ ((packed));
107 } __attribute__ ((packed));
109 #define TH_HEADER_LENGTH (sizeof(struct th_header))
110 #define TH_SWEEP_LENGTH (sizeof(struct th_sweep))
112 #define PDU_LAST 0x80
113 #define PDU_CNTL 0x40
114 #define PDU_FIRST 0x20
119 __u8 pdu_proto; /* 0x01 is APPN SNA */
121 } __attribute__ ((packed));
123 #define PDU_HEADER_LENGTH (sizeof(struct pdu))
127 #define QLLC_REQ 0xFF
128 #define QLLC_RESP 0x00
130 #define QLLC_DISCONNECT 0x53
131 #define QLLC_UNSEQACK 0x73
132 #define QLLC_SETMODE 0x93
133 #define QLLC_EXCHID 0xBF
134 } __attribute__ ((packed));
138 * Definition of one MPC group
141 #define MAX_MPCGCHAN 10
142 #define MPC_XID_TIMEOUT_VALUE 10000
143 #define MPC_CHANNEL_ADD 0
144 #define MPC_CHANNEL_REMOVE 1
145 #define MPC_CHANNEL_ATTN 2
153 struct th_sweep *sweep;
154 struct th_header *th;
158 struct tasklet_struct mpc_tasklet;
159 struct tasklet_struct mpc_tasklet2;
162 int channels_terminating;
170 __u32 xid2_sender_id;
171 int num_channel_paths;
172 int active_channels[2];
173 __u16 group_max_buflen;
174 int outstanding_xid2;
175 int outstanding_xid7;
176 int outstanding_xid7_p2;
177 int sweep_req_pend_num;
178 int sweep_rsp_pend_num;
179 struct sk_buff *xid_skb;
181 struct th_header *xid_th;
184 struct th_header *rcvd_xid_th;
185 struct sk_buff *rcvd_xid_skb;
189 struct xid2 *saved_xid2;
190 void (*allochanfunc)(int, int);
191 int allocchan_callback_retries;
192 void (*estconnfunc)(int, int, int);
193 int estconn_callback_retries;
198 fsm_instance *fsm; /* group xid fsm */
202 void ctcmpc_dumpit(char *buf, int len);
204 static inline void ctcmpc_dumpit(char *buf, int len)
211 * Dump header and first 16 bytes of an sk_buff for debugging purposes.
213 * skb The struct sk_buff to dump.
214 * offset Offset relative to skb-data, where to start the dump.
216 void ctcmpc_dump_skb(struct sk_buff *skb, int offset);
218 static inline void ctcmpc_dump_skb(struct sk_buff *skb, int offset)
222 static inline void ctcmpc_dump32(char *buf, int len)
225 ctcmpc_dumpit(buf, len);
227 ctcmpc_dumpit(buf, 32);
230 int ctcmpc_open(struct net_device *);
231 void ctcm_ccw_check_rc(struct channel *, int, char *);
232 void mpc_group_ready(unsigned long adev);
233 void mpc_channel_action(struct channel *ch, int direction, int action);
234 void mpc_action_send_discontact(unsigned long thischan);
235 void mpc_action_discontact(fsm_instance *fi, int event, void *arg);
236 void ctcmpc_bh(unsigned long thischan);
238 /* --- This is the END my friend --- */