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11#ifndef _CTC_MPC_H_
12#define _CTC_MPC_H_
13
14#include <linux/interrupt.h>
15#include <linux/skbuff.h>
16#include "fsm.h"
17
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25
26extern int ctc_mpc_alloc_channel(int port,
27 void (*callback)(int port_num, int max_write_size));
28
29extern void ctc_mpc_establish_connectivity(int port,
30 void (*callback)(int port_num, int rc, int max_write_size));
31
32extern void ctc_mpc_dealloc_ch(int port);
33extern void ctc_mpc_flow_control(int port, int flowc);
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37
38
39#define ETH_P_SNA_DIX 0x80D5
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43
44
45#define ALLZEROS 0x0000000000000000
46
47#define XID_FM2 0x20
48#define XID2_0 0x00
49#define XID2_7 0x07
50#define XID2_WRITE_SIDE 0x04
51#define XID2_READ_SIDE 0x05
52
53struct xid2 {
54 __u8 xid2_type_id;
55 __u8 xid2_len;
56 __u32 xid2_adj_id;
57 __u8 xid2_rlen;
58 __u8 xid2_resv1;
59 __u8 xid2_flag1;
60 __u8 xid2_fmtt;
61 __u8 xid2_flag4;
62 __u16 xid2_resv2;
63 __u8 xid2_tgnum;
64 __u32 xid2_sender_id;
65 __u8 xid2_flag2;
66 __u8 xid2_option;
67 char xid2_resv3[8];
68 __u16 xid2_resv4;
69 __u8 xid2_dlc_type;
70 __u16 xid2_resv5;
71 __u8 xid2_mpc_flag;
72 __u8 xid2_resv6;
73 __u16 xid2_buf_len;
74 char xid2_buffer[255 - (13 * sizeof(__u8) +
75 2 * sizeof(__u32) +
76 4 * sizeof(__u16) +
77 8 * sizeof(char))];
78} __attribute__ ((packed));
79
80#define XID2_LENGTH (sizeof(struct xid2))
81
82struct th_header {
83 __u8 th_seg;
84 __u8 th_ch_flag;
85#define TH_HAS_PDU 0xf0
86#define TH_IS_XID 0x01
87#define TH_SWEEP_REQ 0xfe
88#define TH_SWEEP_RESP 0xff
89 __u8 th_blk_flag;
90#define TH_DATA_IS_XID 0x80
91#define TH_RETRY 0x40
92#define TH_DISCONTACT 0xc0
93#define TH_SEG_BLK 0x20
94#define TH_LAST_SEG 0x10
95#define TH_PDU_PART 0x08
96 __u8 th_is_xid;
97 __u32 th_seq_num;
98} __attribute__ ((packed));
99
100struct th_addon {
101 __u32 th_last_seq;
102 __u32 th_resvd;
103} __attribute__ ((packed));
104
105struct th_sweep {
106 struct th_header th;
107 struct th_addon sw;
108} __attribute__ ((packed));
109
110#define TH_HEADER_LENGTH (sizeof(struct th_header))
111#define TH_SWEEP_LENGTH (sizeof(struct th_sweep))
112
113#define PDU_LAST 0x80
114#define PDU_CNTL 0x40
115#define PDU_FIRST 0x20
116
117struct pdu {
118 __u32 pdu_offset;
119 __u8 pdu_flag;
120 __u8 pdu_proto;
121 __u16 pdu_seq;
122} __attribute__ ((packed));
123
124#define PDU_HEADER_LENGTH (sizeof(struct pdu))
125
126struct qllc {
127 __u8 qllc_address;
128#define QLLC_REQ 0xFF
129#define QLLC_RESP 0x00
130 __u8 qllc_commands;
131#define QLLC_DISCONNECT 0x53
132#define QLLC_UNSEQACK 0x73
133#define QLLC_SETMODE 0x93
134#define QLLC_EXCHID 0xBF
135} __attribute__ ((packed));
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141
142#define MAX_MPCGCHAN 10
143#define MPC_XID_TIMEOUT_VALUE 10000
144#define MPC_CHANNEL_ADD 0
145#define MPC_CHANNEL_REMOVE 1
146#define MPC_CHANNEL_ATTN 2
147#define XSIDE 1
148#define YSIDE 0
149
150struct mpcg_info {
151 struct sk_buff *skb;
152 struct channel *ch;
153 struct xid2 *xid;
154 struct th_sweep *sweep;
155 struct th_header *th;
156};
157
158struct mpc_group {
159 struct tasklet_struct mpc_tasklet;
160 struct tasklet_struct mpc_tasklet2;
161 int changed_side;
162 int saved_state;
163 int channels_terminating;
164 int out_of_sequence;
165 int flow_off_called;
166 int port_num;
167 int port_persist;
168 int alloc_called;
169 __u32 xid2_adj_id;
170 __u8 xid2_tgnum;
171 __u32 xid2_sender_id;
172 int num_channel_paths;
173 int active_channels[2];
174 __u16 group_max_buflen;
175 int outstanding_xid2;
176 int outstanding_xid7;
177 int outstanding_xid7_p2;
178 int sweep_req_pend_num;
179 int sweep_rsp_pend_num;
180 struct sk_buff *xid_skb;
181 char *xid_skb_data;
182 struct th_header *xid_th;
183 struct xid2 *xid;
184 char *xid_id;
185 struct th_header *rcvd_xid_th;
186 struct sk_buff *rcvd_xid_skb;
187 char *rcvd_xid_data;
188 __u8 in_sweep;
189 __u8 roll;
190 struct xid2 *saved_xid2;
191 void (*allochanfunc)(int, int);
192 int allocchan_callback_retries;
193 void (*estconnfunc)(int, int, int);
194 int estconn_callback_retries;
195 int estconn_called;
196 int xidnogood;
197 int send_qllc_disc;
198 fsm_timer timer;
199 fsm_instance *fsm;
200};
201
202#ifdef DEBUGDATA
203void ctcmpc_dumpit(char *buf, int len);
204#else
205static inline void ctcmpc_dumpit(char *buf, int len)
206{
207}
208#endif
209
210#ifdef DEBUGDATA
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216
217void ctcmpc_dump_skb(struct sk_buff *skb, int offset);
218#else
219static inline void ctcmpc_dump_skb(struct sk_buff *skb, int offset)
220{}
221#endif
222
223static inline void ctcmpc_dump32(char *buf, int len)
224{
225 if (len < 32)
226 ctcmpc_dumpit(buf, len);
227 else
228 ctcmpc_dumpit(buf, 32);
229}
230
231int ctcmpc_open(struct net_device *);
232void ctcm_ccw_check_rc(struct channel *, int, char *);
233void mpc_group_ready(unsigned long adev);
234void mpc_channel_action(struct channel *ch, int direction, int action);
235void mpc_action_send_discontact(unsigned long thischan);
236void mpc_action_discontact(fsm_instance *fi, int event, void *arg);
237void ctcmpc_bh(unsigned long thischan);
238#endif
239
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