^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * IUCV network driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright IBM Corp. 2001, 2009
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Author(s):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Original netiucv driver:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Fritz Elfert (elfert@de.ibm.com, felfert@millenux.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Sysfs integration and all bugs therein:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Cornelia Huck (cornelia.huck@de.ibm.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * PM functions:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * Ursula Braun (ursula.braun@de.ibm.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * Documentation used:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * the source of the original IUCV driver by:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * Stefan Hegewald <hegewald@de.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * Hartmut Penner <hpenner@de.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * Martin Schwidefsky (schwidefsky@de.ibm.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * Alan Altmark (Alan_Altmark@us.ibm.com) Sept. 2000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define KMSG_COMPONENT "netiucv"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #undef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <linux/timer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <linux/signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #include <linux/ip.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #include <linux/if_arp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #include <linux/tcp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #include <linux/skbuff.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #include <linux/ctype.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #include <net/dst.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #include <asm/ebcdic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #include <net/iucv/iucv.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #include "fsm.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) MODULE_AUTHOR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) ("(C) 2001 IBM Corporation by Fritz Elfert (felfert@millenux.com)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) MODULE_DESCRIPTION ("Linux for S/390 IUCV network driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * Debug Facility stuff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define IUCV_DBF_SETUP_NAME "iucv_setup"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define IUCV_DBF_SETUP_LEN 64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #define IUCV_DBF_SETUP_PAGES 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #define IUCV_DBF_SETUP_NR_AREAS 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #define IUCV_DBF_SETUP_LEVEL 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #define IUCV_DBF_DATA_NAME "iucv_data"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #define IUCV_DBF_DATA_LEN 128
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #define IUCV_DBF_DATA_PAGES 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #define IUCV_DBF_DATA_NR_AREAS 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) #define IUCV_DBF_DATA_LEVEL 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #define IUCV_DBF_TRACE_NAME "iucv_trace"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #define IUCV_DBF_TRACE_LEN 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #define IUCV_DBF_TRACE_PAGES 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #define IUCV_DBF_TRACE_NR_AREAS 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #define IUCV_DBF_TRACE_LEVEL 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #define IUCV_DBF_TEXT(name,level,text) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) debug_text_event(iucv_dbf_##name,level,text); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #define IUCV_DBF_HEX(name,level,addr,len) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) debug_event(iucv_dbf_##name,level,(void*)(addr),len); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) DECLARE_PER_CPU(char[256], iucv_dbf_txt_buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) #define IUCV_DBF_TEXT_(name, level, text...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) if (debug_level_enabled(iucv_dbf_##name, level)) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) char* __buf = get_cpu_var(iucv_dbf_txt_buf); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) sprintf(__buf, text); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) debug_text_event(iucv_dbf_##name, level, __buf); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) put_cpu_var(iucv_dbf_txt_buf); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) } \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) #define IUCV_DBF_SPRINTF(name,level,text...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) debug_sprintf_event(iucv_dbf_trace, level, ##text ); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) debug_sprintf_event(iucv_dbf_trace, level, text ); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) * some more debug stuff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) #define PRINTK_HEADER " iucv: " /* for debugging */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) static struct device_driver netiucv_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) .name = "netiucv",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) .bus = &iucv_bus,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) static int netiucv_callback_connreq(struct iucv_path *, u8 *, u8 *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static void netiucv_callback_connack(struct iucv_path *, u8 *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static void netiucv_callback_connrej(struct iucv_path *, u8 *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) static void netiucv_callback_connsusp(struct iucv_path *, u8 *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) static void netiucv_callback_connres(struct iucv_path *, u8 *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) static void netiucv_callback_rx(struct iucv_path *, struct iucv_message *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) static void netiucv_callback_txdone(struct iucv_path *, struct iucv_message *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) static struct iucv_handler netiucv_handler = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) .path_pending = netiucv_callback_connreq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) .path_complete = netiucv_callback_connack,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) .path_severed = netiucv_callback_connrej,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) .path_quiesced = netiucv_callback_connsusp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) .path_resumed = netiucv_callback_connres,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) .message_pending = netiucv_callback_rx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) .message_complete = netiucv_callback_txdone
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * Per connection profiling data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) struct connection_profile {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) unsigned long maxmulti;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) unsigned long maxcqueue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) unsigned long doios_single;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) unsigned long doios_multi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) unsigned long txlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) unsigned long tx_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) unsigned long send_stamp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) unsigned long tx_pending;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) unsigned long tx_max_pending;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) * Representation of one iucv connection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct iucv_connection {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) struct iucv_path *path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) struct sk_buff *rx_buff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) struct sk_buff *tx_buff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) struct sk_buff_head collect_queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) struct sk_buff_head commit_queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) spinlock_t collect_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) int collect_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) int max_buffsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) fsm_timer timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) fsm_instance *fsm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) struct net_device *netdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) struct connection_profile prof;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) char userid[9];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) char userdata[17];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * Linked list of all connection structs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) static LIST_HEAD(iucv_connection_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) static DEFINE_RWLOCK(iucv_connection_rwlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) * Representation of event-data for the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * connection state machine.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) struct iucv_event {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) struct iucv_connection *conn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) void *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) * Private part of the network device structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) struct netiucv_priv {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) struct net_device_stats stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) unsigned long tbusy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) fsm_instance *fsm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) struct iucv_connection *conn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) * Link level header for a packet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) struct ll_header {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) u16 next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) #define NETIUCV_HDRLEN (sizeof(struct ll_header))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) #define NETIUCV_BUFSIZE_MAX 65537
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) #define NETIUCV_BUFSIZE_DEFAULT NETIUCV_BUFSIZE_MAX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) #define NETIUCV_MTU_MAX (NETIUCV_BUFSIZE_MAX - NETIUCV_HDRLEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) #define NETIUCV_MTU_DEFAULT 9216
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) #define NETIUCV_QUEUELEN_DEFAULT 50
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) #define NETIUCV_TIMEOUT_5SEC 5000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) * Compatibility macros for busy handling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) * of network devices.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) static void netiucv_clear_busy(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) struct netiucv_priv *priv = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) clear_bit(0, &priv->tbusy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) netif_wake_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static int netiucv_test_and_set_busy(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) struct netiucv_priv *priv = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) netif_stop_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) return test_and_set_bit(0, &priv->tbusy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) static u8 iucvMagic_ascii[16] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 0x30, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 0x30, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) static u8 iucvMagic_ebcdic[16] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 0xF0, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 0xF0, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) * Convert an iucv userId to its printable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) * form (strip whitespace at end).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) * @param An iucv userId
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) * @returns The printable string (static data!!)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) static char *netiucv_printname(char *name, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) static char tmp[17];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) char *p = tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) memcpy(tmp, name, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) tmp[len] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) while (*p && ((p - tmp) < len) && (!isspace(*p)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) p++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) *p = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) return tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) static char *netiucv_printuser(struct iucv_connection *conn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) static char tmp_uid[9];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) static char tmp_udat[17];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) static char buf[100];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) if (memcmp(conn->userdata, iucvMagic_ebcdic, 16)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) tmp_uid[8] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) tmp_udat[16] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) memcpy(tmp_uid, netiucv_printname(conn->userid, 8), 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) memcpy(tmp_udat, conn->userdata, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) EBCASC(tmp_udat, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) memcpy(tmp_udat, netiucv_printname(tmp_udat, 16), 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) sprintf(buf, "%s.%s", tmp_uid, tmp_udat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) return buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) return netiucv_printname(conn->userid, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) * States of the interface statemachine.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) enum dev_states {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) DEV_STATE_STOPPED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) DEV_STATE_STARTWAIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) DEV_STATE_STOPWAIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) DEV_STATE_RUNNING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) * MUST be always the last element!!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) NR_DEV_STATES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) static const char *dev_state_names[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) "Stopped",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) "StartWait",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) "StopWait",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) "Running",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) * Events of the interface statemachine.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) enum dev_events {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) DEV_EVENT_START,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) DEV_EVENT_STOP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) DEV_EVENT_CONUP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) DEV_EVENT_CONDOWN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) * MUST be always the last element!!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) NR_DEV_EVENTS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) static const char *dev_event_names[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) "Start",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) "Stop",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) "Connection up",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) "Connection down",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) * Events of the connection statemachine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) enum conn_events {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) * Events, representing callbacks from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) * lowlevel iucv layer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) CONN_EVENT_CONN_REQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) CONN_EVENT_CONN_ACK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) CONN_EVENT_CONN_REJ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) CONN_EVENT_CONN_SUS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) CONN_EVENT_CONN_RES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) CONN_EVENT_RX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) CONN_EVENT_TXDONE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) * Events, representing errors return codes from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) * calls to lowlevel iucv layer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) * Event, representing timer expiry.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) CONN_EVENT_TIMER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) * Events, representing commands from upper levels.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) CONN_EVENT_START,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) CONN_EVENT_STOP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) * MUST be always the last element!!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) NR_CONN_EVENTS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) static const char *conn_event_names[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) "Remote connection request",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) "Remote connection acknowledge",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) "Remote connection reject",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) "Connection suspended",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) "Connection resumed",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) "Data received",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) "Data sent",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) "Timer",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) "Start",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) "Stop",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) * States of the connection statemachine.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) enum conn_states {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) * Connection not assigned to any device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) * initial state, invalid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) CONN_STATE_INVALID,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) * Userid assigned but not operating
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) CONN_STATE_STOPPED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) * Connection registered,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) * no connection request sent yet,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) * no connection request received
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) CONN_STATE_STARTWAIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) * Connection registered and connection request sent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) * no acknowledge and no connection request received yet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) CONN_STATE_SETUPWAIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) * Connection up and running idle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) CONN_STATE_IDLE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) * Data sent, awaiting CONN_EVENT_TXDONE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) CONN_STATE_TX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) * Error during registration.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) CONN_STATE_REGERR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) * Error during registration.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) CONN_STATE_CONNERR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) * MUST be always the last element!!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) NR_CONN_STATES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) static const char *conn_state_names[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) "Invalid",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) "Stopped",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) "StartWait",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) "SetupWait",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) "Idle",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) "TX",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) "Terminating",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) "Registration error",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) "Connect error",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) * Debug Facility Stuff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) static debug_info_t *iucv_dbf_setup = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) static debug_info_t *iucv_dbf_data = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) static debug_info_t *iucv_dbf_trace = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) DEFINE_PER_CPU(char[256], iucv_dbf_txt_buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) static void iucv_unregister_dbf_views(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) debug_unregister(iucv_dbf_setup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) debug_unregister(iucv_dbf_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) debug_unregister(iucv_dbf_trace);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) static int iucv_register_dbf_views(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) iucv_dbf_setup = debug_register(IUCV_DBF_SETUP_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) IUCV_DBF_SETUP_PAGES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) IUCV_DBF_SETUP_NR_AREAS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) IUCV_DBF_SETUP_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) iucv_dbf_data = debug_register(IUCV_DBF_DATA_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) IUCV_DBF_DATA_PAGES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) IUCV_DBF_DATA_NR_AREAS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) IUCV_DBF_DATA_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) iucv_dbf_trace = debug_register(IUCV_DBF_TRACE_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) IUCV_DBF_TRACE_PAGES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) IUCV_DBF_TRACE_NR_AREAS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) IUCV_DBF_TRACE_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) if ((iucv_dbf_setup == NULL) || (iucv_dbf_data == NULL) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) (iucv_dbf_trace == NULL)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) iucv_unregister_dbf_views();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) debug_register_view(iucv_dbf_setup, &debug_hex_ascii_view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) debug_set_level(iucv_dbf_setup, IUCV_DBF_SETUP_LEVEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) debug_register_view(iucv_dbf_data, &debug_hex_ascii_view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) debug_set_level(iucv_dbf_data, IUCV_DBF_DATA_LEVEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) debug_register_view(iucv_dbf_trace, &debug_hex_ascii_view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) debug_set_level(iucv_dbf_trace, IUCV_DBF_TRACE_LEVEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) * Callback-wrappers, called from lowlevel iucv layer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) static void netiucv_callback_rx(struct iucv_path *path,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) struct iucv_message *msg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) struct iucv_connection *conn = path->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) struct iucv_event ev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) ev.conn = conn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) ev.data = msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) fsm_event(conn->fsm, CONN_EVENT_RX, &ev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) static void netiucv_callback_txdone(struct iucv_path *path,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) struct iucv_message *msg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) struct iucv_connection *conn = path->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) struct iucv_event ev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) ev.conn = conn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) ev.data = msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) fsm_event(conn->fsm, CONN_EVENT_TXDONE, &ev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) static void netiucv_callback_connack(struct iucv_path *path, u8 ipuser[16])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) struct iucv_connection *conn = path->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) fsm_event(conn->fsm, CONN_EVENT_CONN_ACK, conn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) static int netiucv_callback_connreq(struct iucv_path *path, u8 *ipvmid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) u8 *ipuser)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) struct iucv_connection *conn = path->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) struct iucv_event ev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) static char tmp_user[9];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) static char tmp_udat[17];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) rc = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) memcpy(tmp_user, netiucv_printname(ipvmid, 8), 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) memcpy(tmp_udat, ipuser, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) EBCASC(tmp_udat, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) read_lock_bh(&iucv_connection_rwlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) list_for_each_entry(conn, &iucv_connection_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) if (strncmp(ipvmid, conn->userid, 8) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) strncmp(ipuser, conn->userdata, 16))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) /* Found a matching connection for this path. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) conn->path = path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) ev.conn = conn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) ev.data = path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) fsm_event(conn->fsm, CONN_EVENT_CONN_REQ, &ev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) IUCV_DBF_TEXT_(setup, 2, "Connection requested for %s.%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) tmp_user, netiucv_printname(tmp_udat, 16));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) read_unlock_bh(&iucv_connection_rwlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) static void netiucv_callback_connrej(struct iucv_path *path, u8 *ipuser)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) struct iucv_connection *conn = path->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) fsm_event(conn->fsm, CONN_EVENT_CONN_REJ, conn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) static void netiucv_callback_connsusp(struct iucv_path *path, u8 *ipuser)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) struct iucv_connection *conn = path->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) fsm_event(conn->fsm, CONN_EVENT_CONN_SUS, conn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) static void netiucv_callback_connres(struct iucv_path *path, u8 *ipuser)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) struct iucv_connection *conn = path->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) fsm_event(conn->fsm, CONN_EVENT_CONN_RES, conn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) * NOP action for statemachines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) static void netiucv_action_nop(fsm_instance *fi, int event, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) * Actions of the connection statemachine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) * netiucv_unpack_skb
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) * @conn: The connection where this skb has been received.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) * @pskb: The received skb.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) * Unpack a just received skb and hand it over to upper layers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) * Helper function for conn_action_rx.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) static void netiucv_unpack_skb(struct iucv_connection *conn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) struct sk_buff *pskb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) struct net_device *dev = conn->netdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) struct netiucv_priv *privptr = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) u16 offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) skb_put(pskb, NETIUCV_HDRLEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) pskb->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) pskb->ip_summed = CHECKSUM_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) pskb->protocol = cpu_to_be16(ETH_P_IP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) while (1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) struct ll_header *header = (struct ll_header *) pskb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) if (!header->next)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) skb_pull(pskb, NETIUCV_HDRLEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) header->next -= offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) offset += header->next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) header->next -= NETIUCV_HDRLEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) if (skb_tailroom(pskb) < header->next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) IUCV_DBF_TEXT_(data, 2, "Illegal next field: %d > %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) header->next, skb_tailroom(pskb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) skb_put(pskb, header->next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) skb_reset_mac_header(pskb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) skb = dev_alloc_skb(pskb->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) if (!skb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) IUCV_DBF_TEXT(data, 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) "Out of memory in netiucv_unpack_skb\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) privptr->stats.rx_dropped++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) skb_copy_from_linear_data(pskb, skb_put(skb, pskb->len),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) pskb->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) skb_reset_mac_header(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) skb->dev = pskb->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) skb->protocol = pskb->protocol;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) pskb->ip_summed = CHECKSUM_UNNECESSARY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) privptr->stats.rx_packets++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) privptr->stats.rx_bytes += skb->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) * Since receiving is always initiated from a tasklet (in iucv.c),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) * we must use netif_rx_ni() instead of netif_rx()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) netif_rx_ni(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) skb_pull(pskb, header->next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) skb_put(pskb, NETIUCV_HDRLEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) static void conn_action_rx(fsm_instance *fi, int event, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) struct iucv_event *ev = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) struct iucv_connection *conn = ev->conn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) struct iucv_message *msg = ev->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) struct netiucv_priv *privptr = netdev_priv(conn->netdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) IUCV_DBF_TEXT(trace, 4, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) if (!conn->netdev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) iucv_message_reject(conn->path, msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) IUCV_DBF_TEXT(data, 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) "Received data for unlinked connection\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) if (msg->length > conn->max_buffsize) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) iucv_message_reject(conn->path, msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) privptr->stats.rx_dropped++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) IUCV_DBF_TEXT_(data, 2, "msglen %d > max_buffsize %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) msg->length, conn->max_buffsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) conn->rx_buff->data = conn->rx_buff->head;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) skb_reset_tail_pointer(conn->rx_buff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) conn->rx_buff->len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) rc = iucv_message_receive(conn->path, msg, 0, conn->rx_buff->data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) msg->length, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) if (rc || msg->length < 5) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) privptr->stats.rx_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) IUCV_DBF_TEXT_(data, 2, "rc %d from iucv_receive\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) netiucv_unpack_skb(conn, conn->rx_buff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) static void conn_action_txdone(fsm_instance *fi, int event, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) struct iucv_event *ev = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) struct iucv_connection *conn = ev->conn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) struct iucv_message *msg = ev->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) struct iucv_message txmsg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) struct netiucv_priv *privptr = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) u32 single_flag = msg->tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) u32 txbytes = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) u32 txpackets = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) u32 stat_maxcq = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) unsigned long saveflags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) struct ll_header header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) IUCV_DBF_TEXT(trace, 4, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) if (!conn || !conn->netdev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) IUCV_DBF_TEXT(data, 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) "Send confirmation for unlinked connection\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) privptr = netdev_priv(conn->netdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) conn->prof.tx_pending--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) if (single_flag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) if ((skb = skb_dequeue(&conn->commit_queue))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) refcount_dec(&skb->users);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) if (privptr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) privptr->stats.tx_packets++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) privptr->stats.tx_bytes +=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) (skb->len - NETIUCV_HDRLEN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) - NETIUCV_HDRLEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) dev_kfree_skb_any(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) conn->tx_buff->data = conn->tx_buff->head;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) skb_reset_tail_pointer(conn->tx_buff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) conn->tx_buff->len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) spin_lock_irqsave(&conn->collect_lock, saveflags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) while ((skb = skb_dequeue(&conn->collect_queue))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) header.next = conn->tx_buff->len + skb->len + NETIUCV_HDRLEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) skb_put_data(conn->tx_buff, &header, NETIUCV_HDRLEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) skb_copy_from_linear_data(skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) skb_put(conn->tx_buff, skb->len),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) skb->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) txbytes += skb->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) txpackets++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) stat_maxcq++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) refcount_dec(&skb->users);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) dev_kfree_skb_any(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) if (conn->collect_len > conn->prof.maxmulti)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) conn->prof.maxmulti = conn->collect_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) conn->collect_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) spin_unlock_irqrestore(&conn->collect_lock, saveflags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) if (conn->tx_buff->len == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) fsm_newstate(fi, CONN_STATE_IDLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) header.next = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) skb_put_data(conn->tx_buff, &header, NETIUCV_HDRLEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) conn->prof.send_stamp = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) txmsg.class = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) txmsg.tag = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) rc = iucv_message_send(conn->path, &txmsg, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) conn->tx_buff->data, conn->tx_buff->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) conn->prof.doios_multi++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) conn->prof.txlen += conn->tx_buff->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) conn->prof.tx_pending++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) if (conn->prof.tx_pending > conn->prof.tx_max_pending)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) conn->prof.tx_max_pending = conn->prof.tx_pending;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) conn->prof.tx_pending--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) fsm_newstate(fi, CONN_STATE_IDLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) if (privptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) privptr->stats.tx_errors += txpackets;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) IUCV_DBF_TEXT_(data, 2, "rc %d from iucv_send\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) if (privptr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) privptr->stats.tx_packets += txpackets;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) privptr->stats.tx_bytes += txbytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) if (stat_maxcq > conn->prof.maxcqueue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) conn->prof.maxcqueue = stat_maxcq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) static void conn_action_connaccept(fsm_instance *fi, int event, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) struct iucv_event *ev = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) struct iucv_connection *conn = ev->conn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) struct iucv_path *path = ev->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) struct net_device *netdev = conn->netdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) struct netiucv_priv *privptr = netdev_priv(netdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) IUCV_DBF_TEXT(trace, 3, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) conn->path = path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) path->msglim = NETIUCV_QUEUELEN_DEFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) path->flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) rc = iucv_path_accept(path, &netiucv_handler, conn->userdata , conn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) IUCV_DBF_TEXT_(setup, 2, "rc %d from iucv_accept", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) fsm_newstate(fi, CONN_STATE_IDLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) netdev->tx_queue_len = conn->path->msglim;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) fsm_event(privptr->fsm, DEV_EVENT_CONUP, netdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) static void conn_action_connreject(fsm_instance *fi, int event, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) struct iucv_event *ev = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) struct iucv_path *path = ev->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) IUCV_DBF_TEXT(trace, 3, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) iucv_path_sever(path, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) static void conn_action_connack(fsm_instance *fi, int event, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) struct iucv_connection *conn = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) struct net_device *netdev = conn->netdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) struct netiucv_priv *privptr = netdev_priv(netdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) IUCV_DBF_TEXT(trace, 3, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) fsm_deltimer(&conn->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) fsm_newstate(fi, CONN_STATE_IDLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) netdev->tx_queue_len = conn->path->msglim;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) fsm_event(privptr->fsm, DEV_EVENT_CONUP, netdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) static void conn_action_conntimsev(fsm_instance *fi, int event, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) struct iucv_connection *conn = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) IUCV_DBF_TEXT(trace, 3, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) fsm_deltimer(&conn->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) iucv_path_sever(conn->path, conn->userdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) fsm_newstate(fi, CONN_STATE_STARTWAIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) static void conn_action_connsever(fsm_instance *fi, int event, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) struct iucv_connection *conn = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) struct net_device *netdev = conn->netdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) struct netiucv_priv *privptr = netdev_priv(netdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) IUCV_DBF_TEXT(trace, 3, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) fsm_deltimer(&conn->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) iucv_path_sever(conn->path, conn->userdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) dev_info(privptr->dev, "The peer z/VM guest %s has closed the "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) "connection\n", netiucv_printuser(conn));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) IUCV_DBF_TEXT(data, 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) "conn_action_connsever: Remote dropped connection\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) fsm_newstate(fi, CONN_STATE_STARTWAIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) fsm_event(privptr->fsm, DEV_EVENT_CONDOWN, netdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) static void conn_action_start(fsm_instance *fi, int event, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) struct iucv_connection *conn = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) struct net_device *netdev = conn->netdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) struct netiucv_priv *privptr = netdev_priv(netdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) IUCV_DBF_TEXT(trace, 3, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) fsm_newstate(fi, CONN_STATE_STARTWAIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) * We must set the state before calling iucv_connect because the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) * callback handler could be called at any point after the connection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) * request is sent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) fsm_newstate(fi, CONN_STATE_SETUPWAIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) conn->path = iucv_path_alloc(NETIUCV_QUEUELEN_DEFAULT, 0, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) IUCV_DBF_TEXT_(setup, 2, "%s: connecting to %s ...\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) netdev->name, netiucv_printuser(conn));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) rc = iucv_path_connect(conn->path, &netiucv_handler, conn->userid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) NULL, conn->userdata, conn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) switch (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) netdev->tx_queue_len = conn->path->msglim;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) fsm_addtimer(&conn->timer, NETIUCV_TIMEOUT_5SEC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) CONN_EVENT_TIMER, conn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) case 11:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) dev_warn(privptr->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) "The IUCV device failed to connect to z/VM guest %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) netiucv_printname(conn->userid, 8));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) fsm_newstate(fi, CONN_STATE_STARTWAIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) case 12:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) dev_warn(privptr->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) "The IUCV device failed to connect to the peer on z/VM"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) " guest %s\n", netiucv_printname(conn->userid, 8));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) fsm_newstate(fi, CONN_STATE_STARTWAIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) case 13:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) dev_err(privptr->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) "Connecting the IUCV device would exceed the maximum"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) " number of IUCV connections\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) fsm_newstate(fi, CONN_STATE_CONNERR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) case 14:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) dev_err(privptr->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) "z/VM guest %s has too many IUCV connections"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) " to connect with the IUCV device\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) netiucv_printname(conn->userid, 8));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) fsm_newstate(fi, CONN_STATE_CONNERR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) case 15:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) dev_err(privptr->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) "The IUCV device cannot connect to a z/VM guest with no"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) " IUCV authorization\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) fsm_newstate(fi, CONN_STATE_CONNERR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) dev_err(privptr->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) "Connecting the IUCV device failed with error %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) fsm_newstate(fi, CONN_STATE_CONNERR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) IUCV_DBF_TEXT_(setup, 5, "iucv_connect rc is %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) kfree(conn->path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) conn->path = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) static void netiucv_purge_skb_queue(struct sk_buff_head *q)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) while ((skb = skb_dequeue(q))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) refcount_dec(&skb->users);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) dev_kfree_skb_any(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) static void conn_action_stop(fsm_instance *fi, int event, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) struct iucv_event *ev = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) struct iucv_connection *conn = ev->conn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) struct net_device *netdev = conn->netdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) struct netiucv_priv *privptr = netdev_priv(netdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) IUCV_DBF_TEXT(trace, 3, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) fsm_deltimer(&conn->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) fsm_newstate(fi, CONN_STATE_STOPPED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) netiucv_purge_skb_queue(&conn->collect_queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) if (conn->path) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) IUCV_DBF_TEXT(trace, 5, "calling iucv_path_sever\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) iucv_path_sever(conn->path, conn->userdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) kfree(conn->path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) conn->path = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) netiucv_purge_skb_queue(&conn->commit_queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) fsm_event(privptr->fsm, DEV_EVENT_CONDOWN, netdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) static void conn_action_inval(fsm_instance *fi, int event, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) struct iucv_connection *conn = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) struct net_device *netdev = conn->netdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) IUCV_DBF_TEXT_(data, 2, "%s('%s'): conn_action_inval called\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) netdev->name, conn->userid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) static const fsm_node conn_fsm[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) { CONN_STATE_INVALID, CONN_EVENT_START, conn_action_inval },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) { CONN_STATE_STOPPED, CONN_EVENT_START, conn_action_start },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) { CONN_STATE_STOPPED, CONN_EVENT_STOP, conn_action_stop },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) { CONN_STATE_STARTWAIT, CONN_EVENT_STOP, conn_action_stop },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) { CONN_STATE_SETUPWAIT, CONN_EVENT_STOP, conn_action_stop },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) { CONN_STATE_IDLE, CONN_EVENT_STOP, conn_action_stop },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) { CONN_STATE_TX, CONN_EVENT_STOP, conn_action_stop },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) { CONN_STATE_REGERR, CONN_EVENT_STOP, conn_action_stop },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) { CONN_STATE_CONNERR, CONN_EVENT_STOP, conn_action_stop },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) { CONN_STATE_STOPPED, CONN_EVENT_CONN_REQ, conn_action_connreject },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) { CONN_STATE_STARTWAIT, CONN_EVENT_CONN_REQ, conn_action_connaccept },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) { CONN_STATE_SETUPWAIT, CONN_EVENT_CONN_REQ, conn_action_connaccept },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) { CONN_STATE_IDLE, CONN_EVENT_CONN_REQ, conn_action_connreject },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) { CONN_STATE_TX, CONN_EVENT_CONN_REQ, conn_action_connreject },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) { CONN_STATE_SETUPWAIT, CONN_EVENT_CONN_ACK, conn_action_connack },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) { CONN_STATE_SETUPWAIT, CONN_EVENT_TIMER, conn_action_conntimsev },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) { CONN_STATE_SETUPWAIT, CONN_EVENT_CONN_REJ, conn_action_connsever },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) { CONN_STATE_IDLE, CONN_EVENT_CONN_REJ, conn_action_connsever },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) { CONN_STATE_TX, CONN_EVENT_CONN_REJ, conn_action_connsever },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) { CONN_STATE_IDLE, CONN_EVENT_RX, conn_action_rx },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) { CONN_STATE_TX, CONN_EVENT_RX, conn_action_rx },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) { CONN_STATE_TX, CONN_EVENT_TXDONE, conn_action_txdone },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) { CONN_STATE_IDLE, CONN_EVENT_TXDONE, conn_action_txdone },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) static const int CONN_FSM_LEN = sizeof(conn_fsm) / sizeof(fsm_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) * Actions for interface - statemachine.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) * dev_action_start
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) * @fi: An instance of an interface statemachine.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) * @event: The event, just happened.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) * @arg: Generic pointer, casted from struct net_device * upon call.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) * Startup connection by sending CONN_EVENT_START to it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) static void dev_action_start(fsm_instance *fi, int event, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) struct net_device *dev = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) struct netiucv_priv *privptr = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) IUCV_DBF_TEXT(trace, 3, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) fsm_newstate(fi, DEV_STATE_STARTWAIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) fsm_event(privptr->conn->fsm, CONN_EVENT_START, privptr->conn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) * Shutdown connection by sending CONN_EVENT_STOP to it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) * @param fi An instance of an interface statemachine.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) * @param event The event, just happened.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) * @param arg Generic pointer, casted from struct net_device * upon call.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) dev_action_stop(fsm_instance *fi, int event, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) struct net_device *dev = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) struct netiucv_priv *privptr = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) struct iucv_event ev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) IUCV_DBF_TEXT(trace, 3, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) ev.conn = privptr->conn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) fsm_newstate(fi, DEV_STATE_STOPWAIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) fsm_event(privptr->conn->fsm, CONN_EVENT_STOP, &ev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) * Called from connection statemachine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) * when a connection is up and running.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) * @param fi An instance of an interface statemachine.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) * @param event The event, just happened.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) * @param arg Generic pointer, casted from struct net_device * upon call.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) dev_action_connup(fsm_instance *fi, int event, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) struct net_device *dev = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) struct netiucv_priv *privptr = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) IUCV_DBF_TEXT(trace, 3, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) switch (fsm_getstate(fi)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) case DEV_STATE_STARTWAIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) fsm_newstate(fi, DEV_STATE_RUNNING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) dev_info(privptr->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) "The IUCV device has been connected"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) " successfully to %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) netiucv_printuser(privptr->conn));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) IUCV_DBF_TEXT(setup, 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) "connection is up and running\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) case DEV_STATE_STOPWAIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) IUCV_DBF_TEXT(data, 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) "dev_action_connup: in DEV_STATE_STOPWAIT\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) * Called from connection statemachine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) * when a connection has been shutdown.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) * @param fi An instance of an interface statemachine.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) * @param event The event, just happened.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) * @param arg Generic pointer, casted from struct net_device * upon call.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) dev_action_conndown(fsm_instance *fi, int event, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) IUCV_DBF_TEXT(trace, 3, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) switch (fsm_getstate(fi)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) case DEV_STATE_RUNNING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) fsm_newstate(fi, DEV_STATE_STARTWAIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) case DEV_STATE_STOPWAIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) fsm_newstate(fi, DEV_STATE_STOPPED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) IUCV_DBF_TEXT(setup, 3, "connection is down\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) static const fsm_node dev_fsm[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) { DEV_STATE_STOPPED, DEV_EVENT_START, dev_action_start },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) { DEV_STATE_STOPWAIT, DEV_EVENT_START, dev_action_start },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) { DEV_STATE_STOPWAIT, DEV_EVENT_CONDOWN, dev_action_conndown },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) { DEV_STATE_STARTWAIT, DEV_EVENT_STOP, dev_action_stop },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) { DEV_STATE_STARTWAIT, DEV_EVENT_CONUP, dev_action_connup },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) { DEV_STATE_RUNNING, DEV_EVENT_STOP, dev_action_stop },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) { DEV_STATE_RUNNING, DEV_EVENT_CONDOWN, dev_action_conndown },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) { DEV_STATE_RUNNING, DEV_EVENT_CONUP, netiucv_action_nop },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) static const int DEV_FSM_LEN = sizeof(dev_fsm) / sizeof(fsm_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) * Transmit a packet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) * This is a helper function for netiucv_tx().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) * @param conn Connection to be used for sending.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) * @param skb Pointer to struct sk_buff of packet to send.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) * The linklevel header has already been set up
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) * by netiucv_tx().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) * @return 0 on success, -ERRNO on failure. (Never fails.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) static int netiucv_transmit_skb(struct iucv_connection *conn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) struct iucv_message msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) unsigned long saveflags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) struct ll_header header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) if (fsm_getstate(conn->fsm) != CONN_STATE_IDLE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) int l = skb->len + NETIUCV_HDRLEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) spin_lock_irqsave(&conn->collect_lock, saveflags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) if (conn->collect_len + l >
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) (conn->max_buffsize - NETIUCV_HDRLEN)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) rc = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) IUCV_DBF_TEXT(data, 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) "EBUSY from netiucv_transmit_skb\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) refcount_inc(&skb->users);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) skb_queue_tail(&conn->collect_queue, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) conn->collect_len += l;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) spin_unlock_irqrestore(&conn->collect_lock, saveflags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) struct sk_buff *nskb = skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) * Copy the skb to a new allocated skb in lowmem only if the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) * data is located above 2G in memory or tailroom is < 2.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) unsigned long hi = ((unsigned long)(skb_tail_pointer(skb) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) NETIUCV_HDRLEN)) >> 31;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) int copied = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) if (hi || (skb_tailroom(skb) < 2)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) nskb = alloc_skb(skb->len + NETIUCV_HDRLEN +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) NETIUCV_HDRLEN, GFP_ATOMIC | GFP_DMA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) if (!nskb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) IUCV_DBF_TEXT(data, 2, "alloc_skb failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) skb_reserve(nskb, NETIUCV_HDRLEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) skb_put_data(nskb, skb->data, skb->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) copied = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) * skb now is below 2G and has enough room. Add headers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) header.next = nskb->len + NETIUCV_HDRLEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) memcpy(skb_push(nskb, NETIUCV_HDRLEN), &header, NETIUCV_HDRLEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) header.next = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) skb_put_data(nskb, &header, NETIUCV_HDRLEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) fsm_newstate(conn->fsm, CONN_STATE_TX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) conn->prof.send_stamp = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) msg.tag = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) msg.class = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) rc = iucv_message_send(conn->path, &msg, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) nskb->data, nskb->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) conn->prof.doios_single++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) conn->prof.txlen += skb->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) conn->prof.tx_pending++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) if (conn->prof.tx_pending > conn->prof.tx_max_pending)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) conn->prof.tx_max_pending = conn->prof.tx_pending;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) struct netiucv_priv *privptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) fsm_newstate(conn->fsm, CONN_STATE_IDLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) conn->prof.tx_pending--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) privptr = netdev_priv(conn->netdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) if (privptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) privptr->stats.tx_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) if (copied)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) dev_kfree_skb(nskb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) * Remove our headers. They get added
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) * again on retransmit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) skb_pull(skb, NETIUCV_HDRLEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) skb_trim(skb, skb->len - NETIUCV_HDRLEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) IUCV_DBF_TEXT_(data, 2, "rc %d from iucv_send\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) if (copied)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) dev_kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) refcount_inc(&nskb->users);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) skb_queue_tail(&conn->commit_queue, nskb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) * Interface API for upper network layers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) * Open an interface.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) * Called from generic network layer when ifconfig up is run.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) * @param dev Pointer to interface struct.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) * @return 0 on success, -ERRNO on failure. (Never fails.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) static int netiucv_open(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) struct netiucv_priv *priv = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) fsm_event(priv->fsm, DEV_EVENT_START, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) * Close an interface.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) * Called from generic network layer when ifconfig down is run.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) * @param dev Pointer to interface struct.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) * @return 0 on success, -ERRNO on failure. (Never fails.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) static int netiucv_close(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) struct netiucv_priv *priv = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) fsm_event(priv->fsm, DEV_EVENT_STOP, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) * Start transmission of a packet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) * Called from generic network device layer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) * @param skb Pointer to buffer containing the packet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) * @param dev Pointer to interface struct.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) * @return 0 if packet consumed, !0 if packet rejected.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) * Note: If we return !0, then the packet is free'd by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) * the generic network layer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) static int netiucv_tx(struct sk_buff *skb, struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) struct netiucv_priv *privptr = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) IUCV_DBF_TEXT(trace, 4, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) * Some sanity checks ...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) if (skb == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) IUCV_DBF_TEXT(data, 2, "netiucv_tx: skb is NULL\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) privptr->stats.tx_dropped++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) return NETDEV_TX_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) if (skb_headroom(skb) < NETIUCV_HDRLEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) IUCV_DBF_TEXT(data, 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) "netiucv_tx: skb_headroom < NETIUCV_HDRLEN\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) dev_kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) privptr->stats.tx_dropped++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) return NETDEV_TX_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) * If connection is not running, try to restart it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) * and throw away packet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) if (fsm_getstate(privptr->fsm) != DEV_STATE_RUNNING) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) dev_kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) privptr->stats.tx_dropped++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) privptr->stats.tx_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) privptr->stats.tx_carrier_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) return NETDEV_TX_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) if (netiucv_test_and_set_busy(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) IUCV_DBF_TEXT(data, 2, "EBUSY from netiucv_tx\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) return NETDEV_TX_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) netif_trans_update(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) rc = netiucv_transmit_skb(privptr->conn, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) netiucv_clear_busy(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) return rc ? NETDEV_TX_BUSY : NETDEV_TX_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) * netiucv_stats
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) * @dev: Pointer to interface struct.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) * Returns interface statistics of a device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) * Returns pointer to stats struct of this interface.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) static struct net_device_stats *netiucv_stats (struct net_device * dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) struct netiucv_priv *priv = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) IUCV_DBF_TEXT(trace, 5, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) return &priv->stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) * attributes in sysfs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) static ssize_t user_show(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) IUCV_DBF_TEXT(trace, 5, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) return sprintf(buf, "%s\n", netiucv_printuser(priv->conn));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) static int netiucv_check_user(const char *buf, size_t count, char *username,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) char *userdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) const char *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) p = strchr(buf, '.');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) if ((p && ((count > 26) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) ((p - buf) > 8) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) (buf + count - p > 18))) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) (!p && (count > 9))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) IUCV_DBF_TEXT(setup, 2, "conn_write: too long\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) for (i = 0, p = buf; i < 8 && *p && *p != '.'; i++, p++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) if (isalnum(*p) || *p == '$') {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) username[i] = toupper(*p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) if (*p == '\n')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) /* trailing lf, grr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) IUCV_DBF_TEXT_(setup, 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) "conn_write: invalid character %02x\n", *p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) while (i < 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) username[i++] = ' ';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) username[8] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) if (*p == '.') {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) p++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) for (i = 0; i < 16 && *p; i++, p++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) if (*p == '\n')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) userdata[i] = toupper(*p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) while (i > 0 && i < 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) userdata[i++] = ' ';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) memcpy(userdata, iucvMagic_ascii, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) userdata[16] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) ASCEBC(userdata, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) static ssize_t user_write(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) struct net_device *ndev = priv->conn->netdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) char username[9];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) char userdata[17];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) struct iucv_connection *cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) IUCV_DBF_TEXT(trace, 3, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) rc = netiucv_check_user(buf, count, username, userdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) if (memcmp(username, priv->conn->userid, 9) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) (ndev->flags & (IFF_UP | IFF_RUNNING))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) /* username changed while the interface is active. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) IUCV_DBF_TEXT(setup, 2, "user_write: device active\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) read_lock_bh(&iucv_connection_rwlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) list_for_each_entry(cp, &iucv_connection_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) if (!strncmp(username, cp->userid, 9) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) !strncmp(userdata, cp->userdata, 17) && cp->netdev != ndev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) read_unlock_bh(&iucv_connection_rwlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) IUCV_DBF_TEXT_(setup, 2, "user_write: Connection to %s "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) "already exists\n", netiucv_printuser(cp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) return -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) read_unlock_bh(&iucv_connection_rwlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) memcpy(priv->conn->userid, username, 9);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) memcpy(priv->conn->userdata, userdata, 17);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) static DEVICE_ATTR(user, 0644, user_show, user_write);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) static ssize_t buffer_show (struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) IUCV_DBF_TEXT(trace, 5, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) return sprintf(buf, "%d\n", priv->conn->max_buffsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) static ssize_t buffer_write (struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) struct net_device *ndev = priv->conn->netdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) unsigned int bs1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) IUCV_DBF_TEXT(trace, 3, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) if (count >= 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) rc = kstrtouint(buf, 0, &bs1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) if (rc == -EINVAL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) IUCV_DBF_TEXT_(setup, 2, "buffer_write: invalid char %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) if ((rc == -ERANGE) || (bs1 > NETIUCV_BUFSIZE_MAX)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) IUCV_DBF_TEXT_(setup, 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) "buffer_write: buffer size %d too large\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) bs1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) if ((ndev->flags & IFF_RUNNING) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) (bs1 < (ndev->mtu + NETIUCV_HDRLEN + 2))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) IUCV_DBF_TEXT_(setup, 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) "buffer_write: buffer size %d too small\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) bs1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) if (bs1 < (576 + NETIUCV_HDRLEN + NETIUCV_HDRLEN)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) IUCV_DBF_TEXT_(setup, 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) "buffer_write: buffer size %d too small\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) bs1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) priv->conn->max_buffsize = bs1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) if (!(ndev->flags & IFF_RUNNING))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) ndev->mtu = bs1 - NETIUCV_HDRLEN - NETIUCV_HDRLEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) static DEVICE_ATTR(buffer, 0644, buffer_show, buffer_write);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) static ssize_t dev_fsm_show (struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) IUCV_DBF_TEXT(trace, 5, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) return sprintf(buf, "%s\n", fsm_getstate_str(priv->fsm));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) static DEVICE_ATTR(device_fsm_state, 0444, dev_fsm_show, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) static ssize_t conn_fsm_show (struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) IUCV_DBF_TEXT(trace, 5, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) return sprintf(buf, "%s\n", fsm_getstate_str(priv->conn->fsm));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) static DEVICE_ATTR(connection_fsm_state, 0444, conn_fsm_show, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) static ssize_t maxmulti_show (struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) IUCV_DBF_TEXT(trace, 5, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) return sprintf(buf, "%ld\n", priv->conn->prof.maxmulti);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) static ssize_t maxmulti_write (struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) IUCV_DBF_TEXT(trace, 4, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) priv->conn->prof.maxmulti = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) static DEVICE_ATTR(max_tx_buffer_used, 0644, maxmulti_show, maxmulti_write);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) static ssize_t maxcq_show (struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) IUCV_DBF_TEXT(trace, 5, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) return sprintf(buf, "%ld\n", priv->conn->prof.maxcqueue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) static ssize_t maxcq_write (struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) IUCV_DBF_TEXT(trace, 4, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) priv->conn->prof.maxcqueue = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) static DEVICE_ATTR(max_chained_skbs, 0644, maxcq_show, maxcq_write);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) static ssize_t sdoio_show (struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) IUCV_DBF_TEXT(trace, 5, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) return sprintf(buf, "%ld\n", priv->conn->prof.doios_single);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) static ssize_t sdoio_write (struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) IUCV_DBF_TEXT(trace, 4, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) priv->conn->prof.doios_single = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) static DEVICE_ATTR(tx_single_write_ops, 0644, sdoio_show, sdoio_write);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) static ssize_t mdoio_show (struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) IUCV_DBF_TEXT(trace, 5, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) return sprintf(buf, "%ld\n", priv->conn->prof.doios_multi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) static ssize_t mdoio_write (struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) IUCV_DBF_TEXT(trace, 5, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) priv->conn->prof.doios_multi = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) static DEVICE_ATTR(tx_multi_write_ops, 0644, mdoio_show, mdoio_write);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) static ssize_t txlen_show (struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) IUCV_DBF_TEXT(trace, 5, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) return sprintf(buf, "%ld\n", priv->conn->prof.txlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) static ssize_t txlen_write (struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) IUCV_DBF_TEXT(trace, 4, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) priv->conn->prof.txlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) static DEVICE_ATTR(netto_bytes, 0644, txlen_show, txlen_write);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) static ssize_t txtime_show (struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) IUCV_DBF_TEXT(trace, 5, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) return sprintf(buf, "%ld\n", priv->conn->prof.tx_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) static ssize_t txtime_write (struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) IUCV_DBF_TEXT(trace, 4, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) priv->conn->prof.tx_time = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) static DEVICE_ATTR(max_tx_io_time, 0644, txtime_show, txtime_write);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) static ssize_t txpend_show (struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643) IUCV_DBF_TEXT(trace, 5, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) return sprintf(buf, "%ld\n", priv->conn->prof.tx_pending);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) static ssize_t txpend_write (struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) IUCV_DBF_TEXT(trace, 4, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) priv->conn->prof.tx_pending = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) static DEVICE_ATTR(tx_pending, 0644, txpend_show, txpend_write);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659) static ssize_t txmpnd_show (struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) IUCV_DBF_TEXT(trace, 5, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) return sprintf(buf, "%ld\n", priv->conn->prof.tx_max_pending);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) static ssize_t txmpnd_write (struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671) struct netiucv_priv *priv = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) IUCV_DBF_TEXT(trace, 4, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) priv->conn->prof.tx_max_pending = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) static DEVICE_ATTR(tx_max_pending, 0644, txmpnd_show, txmpnd_write);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) static struct attribute *netiucv_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681) &dev_attr_buffer.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682) &dev_attr_user.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) static struct attribute_group netiucv_attr_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) .attrs = netiucv_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) static struct attribute *netiucv_stat_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) &dev_attr_device_fsm_state.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692) &dev_attr_connection_fsm_state.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) &dev_attr_max_tx_buffer_used.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694) &dev_attr_max_chained_skbs.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) &dev_attr_tx_single_write_ops.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) &dev_attr_tx_multi_write_ops.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) &dev_attr_netto_bytes.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) &dev_attr_max_tx_io_time.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699) &dev_attr_tx_pending.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700) &dev_attr_tx_max_pending.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704) static struct attribute_group netiucv_stat_attr_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) .name = "stats",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706) .attrs = netiucv_stat_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709) static const struct attribute_group *netiucv_attr_groups[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) &netiucv_stat_attr_group,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711) &netiucv_attr_group,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) static int netiucv_register_device(struct net_device *ndev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717) struct netiucv_priv *priv = netdev_priv(ndev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) struct device *dev = kzalloc(sizeof(struct device), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) IUCV_DBF_TEXT(trace, 3, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723) if (dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) dev_set_name(dev, "net%s", ndev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725) dev->bus = &iucv_bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) dev->parent = iucv_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727) dev->groups = netiucv_attr_groups;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729) * The release function could be called after the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) * module has been unloaded. It's _only_ task is to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731) * free the struct. Therefore, we specify kfree()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) * directly here. (Probably a little bit obfuscating
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733) * but legitime ...).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) dev->release = (void (*)(struct device *))kfree;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736) dev->driver = &netiucv_driver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740) ret = device_register(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742) put_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745) priv->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746) dev_set_drvdata(dev, priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750) static void netiucv_unregister_device(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752) IUCV_DBF_TEXT(trace, 3, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753) device_unregister(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) * Allocate and initialize a new connection structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758) * Add it to the list of netiucv connections;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) static struct iucv_connection *netiucv_new_connection(struct net_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761) char *username,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762) char *userdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764) struct iucv_connection *conn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766) conn = kzalloc(sizeof(*conn), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) if (!conn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769) skb_queue_head_init(&conn->collect_queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) skb_queue_head_init(&conn->commit_queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) spin_lock_init(&conn->collect_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772) conn->max_buffsize = NETIUCV_BUFSIZE_DEFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773) conn->netdev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775) conn->rx_buff = alloc_skb(conn->max_buffsize, GFP_KERNEL | GFP_DMA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776) if (!conn->rx_buff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777) goto out_conn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778) conn->tx_buff = alloc_skb(conn->max_buffsize, GFP_KERNEL | GFP_DMA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779) if (!conn->tx_buff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780) goto out_rx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) conn->fsm = init_fsm("netiucvconn", conn_state_names,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782) conn_event_names, NR_CONN_STATES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783) NR_CONN_EVENTS, conn_fsm, CONN_FSM_LEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785) if (!conn->fsm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786) goto out_tx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788) fsm_settimer(conn->fsm, &conn->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1789) fsm_newstate(conn->fsm, CONN_STATE_INVALID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1790)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) if (userdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792) memcpy(conn->userdata, userdata, 17);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793) if (username) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794) memcpy(conn->userid, username, 9);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795) fsm_newstate(conn->fsm, CONN_STATE_STOPPED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1796) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1797)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1798) write_lock_bh(&iucv_connection_rwlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1799) list_add_tail(&conn->list, &iucv_connection_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1800) write_unlock_bh(&iucv_connection_rwlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1801) return conn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1802)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1803) out_tx:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1804) kfree_skb(conn->tx_buff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1805) out_rx:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1806) kfree_skb(conn->rx_buff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1807) out_conn:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1808) kfree(conn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1809) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1810) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1811) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1812)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1813) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1814) * Release a connection structure and remove it from the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1815) * list of netiucv connections.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1816) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1817) static void netiucv_remove_connection(struct iucv_connection *conn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1818) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1819)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1820) IUCV_DBF_TEXT(trace, 3, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1821) write_lock_bh(&iucv_connection_rwlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1822) list_del_init(&conn->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1823) write_unlock_bh(&iucv_connection_rwlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1824) fsm_deltimer(&conn->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1825) netiucv_purge_skb_queue(&conn->collect_queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1826) if (conn->path) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1827) iucv_path_sever(conn->path, conn->userdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1828) kfree(conn->path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1829) conn->path = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1830) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1831) netiucv_purge_skb_queue(&conn->commit_queue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1832) kfree_fsm(conn->fsm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1833) kfree_skb(conn->rx_buff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1834) kfree_skb(conn->tx_buff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1835) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1837) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1838) * Release everything of a net device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1839) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1840) static void netiucv_free_netdevice(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1841) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1842) struct netiucv_priv *privptr = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1843)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1844) IUCV_DBF_TEXT(trace, 3, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1845)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1846) if (!dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1847) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1848)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1849) if (privptr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1850) if (privptr->conn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1851) netiucv_remove_connection(privptr->conn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1852) if (privptr->fsm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1853) kfree_fsm(privptr->fsm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1854) privptr->conn = NULL; privptr->fsm = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1855) /* privptr gets freed by free_netdev() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1856) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1857) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1858)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1859) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1860) * Initialize a net device. (Called from kernel in alloc_netdev())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1861) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1862) static const struct net_device_ops netiucv_netdev_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1863) .ndo_open = netiucv_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1864) .ndo_stop = netiucv_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1865) .ndo_get_stats = netiucv_stats,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1866) .ndo_start_xmit = netiucv_tx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1867) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1868)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1869) static void netiucv_setup_netdevice(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1870) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1871) dev->mtu = NETIUCV_MTU_DEFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1872) dev->min_mtu = 576;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1873) dev->max_mtu = NETIUCV_MTU_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1874) dev->needs_free_netdev = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1875) dev->priv_destructor = netiucv_free_netdevice;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1876) dev->hard_header_len = NETIUCV_HDRLEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1877) dev->addr_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1878) dev->type = ARPHRD_SLIP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1879) dev->tx_queue_len = NETIUCV_QUEUELEN_DEFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1880) dev->flags = IFF_POINTOPOINT | IFF_NOARP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1881) dev->netdev_ops = &netiucv_netdev_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1882) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1883)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1884) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1885) * Allocate and initialize everything of a net device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1886) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1887) static struct net_device *netiucv_init_netdevice(char *username, char *userdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1888) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1889) struct netiucv_priv *privptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1890) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1891)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1892) dev = alloc_netdev(sizeof(struct netiucv_priv), "iucv%d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1893) NET_NAME_UNKNOWN, netiucv_setup_netdevice);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1894) if (!dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1895) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1896) rtnl_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1897) if (dev_alloc_name(dev, dev->name) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1898) goto out_netdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1899)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1900) privptr = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1901) privptr->fsm = init_fsm("netiucvdev", dev_state_names,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1902) dev_event_names, NR_DEV_STATES, NR_DEV_EVENTS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1903) dev_fsm, DEV_FSM_LEN, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1904) if (!privptr->fsm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1905) goto out_netdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1906)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1907) privptr->conn = netiucv_new_connection(dev, username, userdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1908) if (!privptr->conn) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1909) IUCV_DBF_TEXT(setup, 2, "NULL from netiucv_new_connection\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1910) goto out_fsm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1911) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1912) fsm_newstate(privptr->fsm, DEV_STATE_STOPPED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1913) return dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1914)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1915) out_fsm:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1916) kfree_fsm(privptr->fsm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1917) out_netdev:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1918) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1919) free_netdev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1920) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1921) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1922)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1923) static ssize_t connection_store(struct device_driver *drv, const char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1924) size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1925) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1926) char username[9];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1927) char userdata[17];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1928) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1929) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1930) struct netiucv_priv *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1931) struct iucv_connection *cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1932)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1933) IUCV_DBF_TEXT(trace, 3, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1934) rc = netiucv_check_user(buf, count, username, userdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1935) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1936) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1937)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1938) read_lock_bh(&iucv_connection_rwlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1939) list_for_each_entry(cp, &iucv_connection_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1940) if (!strncmp(username, cp->userid, 9) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1941) !strncmp(userdata, cp->userdata, 17)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1942) read_unlock_bh(&iucv_connection_rwlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1943) IUCV_DBF_TEXT_(setup, 2, "conn_write: Connection to %s "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1944) "already exists\n", netiucv_printuser(cp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1945) return -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1946) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1947) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1948) read_unlock_bh(&iucv_connection_rwlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1949)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1950) dev = netiucv_init_netdevice(username, userdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1951) if (!dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1952) IUCV_DBF_TEXT(setup, 2, "NULL from netiucv_init_netdevice\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1953) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1954) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1955)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1956) rc = netiucv_register_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1957) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1958) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1959) IUCV_DBF_TEXT_(setup, 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1960) "ret %d from netiucv_register_device\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1961) goto out_free_ndev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1962) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1963)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1964) /* sysfs magic */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1965) priv = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1966) SET_NETDEV_DEV(dev, priv->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1967)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1968) rc = register_netdevice(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1969) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1970) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1971) goto out_unreg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1972)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1973) dev_info(priv->dev, "The IUCV interface to %s has been established "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1974) "successfully\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1975) netiucv_printuser(priv->conn));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1976)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1977) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1978)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1979) out_unreg:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1980) netiucv_unregister_device(priv->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1981) out_free_ndev:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1982) netiucv_free_netdevice(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1983) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1984) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1985) static DRIVER_ATTR_WO(connection);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1986)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1987) static ssize_t remove_store(struct device_driver *drv, const char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1988) size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1989) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1990) struct iucv_connection *cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1991) struct net_device *ndev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1992) struct netiucv_priv *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1993) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1994) char name[IFNAMSIZ];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1995) const char *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1996) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1997)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1998) IUCV_DBF_TEXT(trace, 3, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1999)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2000) if (count >= IFNAMSIZ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2001) count = IFNAMSIZ - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2002)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2003) for (i = 0, p = buf; i < count && *p; i++, p++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2004) if (*p == '\n' || *p == ' ')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2005) /* trailing lf, grr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2006) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2007) name[i] = *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2008) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2009) name[i] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2010)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2011) read_lock_bh(&iucv_connection_rwlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2012) list_for_each_entry(cp, &iucv_connection_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2013) ndev = cp->netdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2014) priv = netdev_priv(ndev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2015) dev = priv->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2016) if (strncmp(name, ndev->name, count))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2017) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2018) read_unlock_bh(&iucv_connection_rwlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2019) if (ndev->flags & (IFF_UP | IFF_RUNNING)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2020) dev_warn(dev, "The IUCV device is connected"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2021) " to %s and cannot be removed\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2022) priv->conn->userid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2023) IUCV_DBF_TEXT(data, 2, "remove_write: still active\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2024) return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2025) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2026) unregister_netdev(ndev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2027) netiucv_unregister_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2028) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2029) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2030) read_unlock_bh(&iucv_connection_rwlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2031) IUCV_DBF_TEXT(data, 2, "remove_write: unknown device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2032) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2033) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2034) static DRIVER_ATTR_WO(remove);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2035)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2036) static struct attribute * netiucv_drv_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2037) &driver_attr_connection.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2038) &driver_attr_remove.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2039) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2040) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2041)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2042) static struct attribute_group netiucv_drv_attr_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2043) .attrs = netiucv_drv_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2044) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2045)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2046) static const struct attribute_group *netiucv_drv_attr_groups[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2047) &netiucv_drv_attr_group,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2048) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2049) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2050)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2051) static void netiucv_banner(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2052) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2053) pr_info("driver initialized\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2054) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2056) static void __exit netiucv_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2057) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2058) struct iucv_connection *cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2059) struct net_device *ndev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2060) struct netiucv_priv *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2061) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2062)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2063) IUCV_DBF_TEXT(trace, 3, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2064) while (!list_empty(&iucv_connection_list)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2065) cp = list_entry(iucv_connection_list.next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2066) struct iucv_connection, list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2067) ndev = cp->netdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2068) priv = netdev_priv(ndev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2069) dev = priv->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2070)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2071) unregister_netdev(ndev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2072) netiucv_unregister_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2073) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2074)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2075) driver_unregister(&netiucv_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2076) iucv_unregister(&netiucv_handler, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2077) iucv_unregister_dbf_views();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2078)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2079) pr_info("driver unloaded\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2080) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2081) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2082)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2083) static int __init netiucv_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2084) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2085) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2086)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2087) rc = iucv_register_dbf_views();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2088) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2089) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2090) rc = iucv_register(&netiucv_handler, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2091) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2092) goto out_dbf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2093) IUCV_DBF_TEXT(trace, 3, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2094) netiucv_driver.groups = netiucv_drv_attr_groups;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2095) rc = driver_register(&netiucv_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2096) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2097) IUCV_DBF_TEXT_(setup, 2, "ret %d from driver_register\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2098) goto out_iucv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2099) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2101) netiucv_banner();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2102) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2104) out_iucv:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2105) iucv_unregister(&netiucv_handler, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2106) out_dbf:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2107) iucv_unregister_dbf_views();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2108) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2109) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2112) module_init(netiucv_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2113) module_exit(netiucv_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2114) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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