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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 | /* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright IBM Corp. 2007 * Authors: Peter Tiedemann (ptiedem@de.ibm.com) * * MPC additions: * Belinda Thompson (belindat@us.ibm.com) * Andy Richter (richtera@us.ibm.com) */ #ifndef _CTC_MPC_H_ #define _CTC_MPC_H_ #include <linux/interrupt.h> #include <linux/skbuff.h> #include "fsm.h" /* * MPC external interface * Note that ctc_mpc_xyz are called with a lock on ................ */ /* port_number is the mpc device 0, 1, 2 etc mpc2 is port_number 2 */ /* passive open Just wait for XID2 exchange */ extern int ctc_mpc_alloc_channel(int port, void (*callback)(int port_num, int max_write_size)); /* active open Alloc then send XID2 */ extern void ctc_mpc_establish_connectivity(int port, void (*callback)(int port_num, int rc, int max_write_size)); extern void ctc_mpc_dealloc_ch(int port); extern void ctc_mpc_flow_control(int port, int flowc); /* * other MPC Group prototypes and structures */ #define ETH_P_SNA_DIX 0x80D5 /* * Declaration of an XID2 * */ #define ALLZEROS 0x0000000000000000 #define XID_FM2 0x20 #define XID2_0 0x00 #define XID2_7 0x07 #define XID2_WRITE_SIDE 0x04 #define XID2_READ_SIDE 0x05 struct xid2 { __u8 xid2_type_id; __u8 xid2_len; __u32 xid2_adj_id; __u8 xid2_rlen; __u8 xid2_resv1; __u8 xid2_flag1; __u8 xid2_fmtt; __u8 xid2_flag4; __u16 xid2_resv2; __u8 xid2_tgnum; __u32 xid2_sender_id; __u8 xid2_flag2; __u8 xid2_option; char xid2_resv3[8]; __u16 xid2_resv4; __u8 xid2_dlc_type; __u16 xid2_resv5; __u8 xid2_mpc_flag; __u8 xid2_resv6; __u16 xid2_buf_len; char xid2_buffer[255 - (13 * sizeof(__u8) + 2 * sizeof(__u32) + 4 * sizeof(__u16) + 8 * sizeof(char))]; } __attribute__ ((packed)); #define XID2_LENGTH (sizeof(struct xid2)) struct th_header { __u8 th_seg; __u8 th_ch_flag; #define TH_HAS_PDU 0xf0 #define TH_IS_XID 0x01 #define TH_SWEEP_REQ 0xfe #define TH_SWEEP_RESP 0xff __u8 th_blk_flag; #define TH_DATA_IS_XID 0x80 #define TH_RETRY 0x40 #define TH_DISCONTACT 0xc0 #define TH_SEG_BLK 0x20 #define TH_LAST_SEG 0x10 #define TH_PDU_PART 0x08 __u8 th_is_xid; /* is 0x01 if this is XID */ __u32 th_seq_num; } __attribute__ ((packed)); struct th_addon { __u32 th_last_seq; __u32 th_resvd; } __attribute__ ((packed)); struct th_sweep { struct th_header th; struct th_addon sw; } __attribute__ ((packed)); #define TH_HEADER_LENGTH (sizeof(struct th_header)) #define TH_SWEEP_LENGTH (sizeof(struct th_sweep)) #define PDU_LAST 0x80 #define PDU_CNTL 0x40 #define PDU_FIRST 0x20 struct pdu { __u32 pdu_offset; __u8 pdu_flag; __u8 pdu_proto; /* 0x01 is APPN SNA */ __u16 pdu_seq; } __attribute__ ((packed)); #define PDU_HEADER_LENGTH (sizeof(struct pdu)) struct qllc { __u8 qllc_address; #define QLLC_REQ 0xFF #define QLLC_RESP 0x00 __u8 qllc_commands; #define QLLC_DISCONNECT 0x53 #define QLLC_UNSEQACK 0x73 #define QLLC_SETMODE 0x93 #define QLLC_EXCHID 0xBF } __attribute__ ((packed)); /* * Definition of one MPC group */ #define MAX_MPCGCHAN 10 #define MPC_XID_TIMEOUT_VALUE 10000 #define MPC_CHANNEL_ADD 0 #define MPC_CHANNEL_REMOVE 1 #define MPC_CHANNEL_ATTN 2 #define XSIDE 1 #define YSIDE 0 struct mpcg_info { struct sk_buff *skb; struct channel *ch; struct xid2 *xid; struct th_sweep *sweep; struct th_header *th; }; struct mpc_group { struct tasklet_struct mpc_tasklet; struct tasklet_struct mpc_tasklet2; int changed_side; int saved_state; int channels_terminating; int out_of_sequence; int flow_off_called; int port_num; int port_persist; int alloc_called; __u32 xid2_adj_id; __u8 xid2_tgnum; __u32 xid2_sender_id; int num_channel_paths; int active_channels[2]; __u16 group_max_buflen; int outstanding_xid2; int outstanding_xid7; int outstanding_xid7_p2; int sweep_req_pend_num; int sweep_rsp_pend_num; struct sk_buff *xid_skb; char *xid_skb_data; struct th_header *xid_th; struct xid2 *xid; char *xid_id; struct th_header *rcvd_xid_th; struct sk_buff *rcvd_xid_skb; char *rcvd_xid_data; __u8 in_sweep; __u8 roll; struct xid2 *saved_xid2; void (*allochanfunc)(int, int); int allocchan_callback_retries; void (*estconnfunc)(int, int, int); int estconn_callback_retries; int estconn_called; int xidnogood; int send_qllc_disc; fsm_timer timer; fsm_instance *fsm; /* group xid fsm */ }; #ifdef DEBUGDATA void ctcmpc_dumpit(char *buf, int len); #else static inline void ctcmpc_dumpit(char *buf, int len) { } #endif #ifdef DEBUGDATA /* * Dump header and first 16 bytes of an sk_buff for debugging purposes. * * skb The struct sk_buff to dump. * offset Offset relative to skb-data, where to start the dump. */ void ctcmpc_dump_skb(struct sk_buff *skb, int offset); #else static inline void ctcmpc_dump_skb(struct sk_buff *skb, int offset) {} #endif static inline void ctcmpc_dump32(char *buf, int len) { if (len < 32) ctcmpc_dumpit(buf, len); else ctcmpc_dumpit(buf, 32); } int ctcmpc_open(struct net_device *); void ctcm_ccw_check_rc(struct channel *, int, char *); void mpc_group_ready(unsigned long adev); void mpc_channel_action(struct channel *ch, int direction, int action); void mpc_action_send_discontact(unsigned long thischan); void mpc_action_discontact(fsm_instance *fi, int event, void *arg); void ctcmpc_bh(unsigned long thischan); #endif /* --- This is the END my friend --- */ |