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STRUCT W1_MASTER(9) W1 API internal to the kernel STRUCT W1_MASTER(9)

NAME

struct_w1_master - one per bus master

SYNOPSIS

struct w1_master {
  struct list_head w1_master_entry;
  struct module * owner;
  unsigned char name[W1_MAXNAMELEN];
  struct mutex list_mutex;
  struct list_head slist;
  struct list_head async_list;
  int max_slave_count;
  int slave_count;
  unsigned long attempts;
  int slave_ttl;
  int initialized;
  u32 id;
  int search_count;
  u64 search_id;
  atomic_t refcnt;
  void * priv;
  int enable_pullup;
  int pullup_duration;
  long flags;
  struct task_struct * thread;
  struct mutex mutex;
  struct mutex bus_mutex;
  struct device_driver * driver;
  struct device dev;
  struct w1_bus_master * bus_master;
  u32 seq;
};

MEMBERS

w1_master_entry
master linked list
owner
module owner
name[W1_MAXNAMELEN]
dynamically allocate bus name
list_mutex
protect slist and async_list
slist
linked list of slaves
async_list
linked list of netlink commands to execute
max_slave_count
maximum number of slaves to search for at a time
slave_count
current number of slaves known
attempts
number of searches ran
slave_ttl
number of searches before a slave is timed out
initialized
prevent init/removal race conditions
id
w1 bus number
search_count
number of automatic searches to run, -1 unlimited
search_id
allows continuing a search
refcnt
reference count
priv
private data storage
enable_pullup
allows a strong pullup
pullup_duration
time for the next strong pullup
flags
one of w1_master_flags
thread
thread for bus search and netlink commands
mutex
protect most of w1_master
bus_mutex
pretect concurrent bus access
driver
sysfs driver
dev
sysfs device
bus_master
io operations available
seq
sequence number used for netlink broadcasts

AUTHOR

David Fries <David@Fries.net>
Author.

COPYRIGHT

May 2018 Kernel Hackers Manual 3.16