haiku/headers/private/net/net_stack_driver.h

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/* net_stack_driver.h
* structures and defines to deal with the network stack pseudo-driver...
*/
#ifndef NET_STACK_DRIVER_H
#define NET_STACK_DRIVER_H
#include <OS.h>
#include <sys/select.h>
// Forward declaration
struct sockaddr;
#define NET_STACK_DRIVER_DEV "net/stack"
#define NET_STACK_DRIVER_PATH "/dev/" NET_STACK_DRIVER_DEV
enum {
// Paranoia mode: be far away of B_DEVICE_OP_CODES_END opcodes!!!
// You never know what another device driver ioctl() will do
// if think our NET_STACK_* is in fact his DO_RISKY_BUSINESS opcode, or whatever...
NET_IOCTL_BASE = 0xbe230000,
NET_STACK_IOCTL_BASE = NET_IOCTL_BASE + 0x200
};
enum {
// ops not acting on an existing socket
NET_STACK_SOCKET = NET_STACK_IOCTL_BASE, // socket_args *
NET_STACK_GET_COOKIE, // void **
NET_STACK_CONTROL_NET_MODULE, // control_net_module_args *
NET_STACK_SYSCTL, // sysctl_args *
// ops acting on an existing socket
NET_STACK_BIND, // sockaddr_args *
NET_STACK_RECVFROM, // struct msghdr *
NET_STACK_RECV, // transfer_args *
NET_STACK_SENDTO, // struct msghdr *
NET_STACK_SEND, // transfer_args *
NET_STACK_LISTEN, // int_args * (value = backlog)
NET_STACK_ACCEPT, // sockaddr_args *
NET_STACK_CONNECT, // sockaddr_args *
NET_STACK_SHUTDOWN, // int_args * (value = how)
NET_STACK_GETSOCKOPT, // sockopt_args *
NET_STACK_SETSOCKOPT, // sockopt_args *
NET_STACK_GETSOCKNAME, // sockaddr_args *
NET_STACK_GETPEERNAME, // sockaddr_args *
NET_STACK_SOCKETPAIR, // socketpair_args *
// TODO: remove R5 select() emulation
NET_STACK_SELECT, // select_args *
NET_STACK_DESELECT, // select_args *
NET_STACK_NOTIFY_SOCKET_EVENT, // notify_socket_event_args * (userland stack only)
NET_STACK_IOCTL_MAX
};
struct sockaddr_args { // used by NET_STACK_CONNECT/_BIND/_GETSOCKNAME/_GETPEERNAME
struct sockaddr *addr;
int addrlen;
};
struct sockopt_args { // used by NET_STACK_SETSOCKOPT/_GETSOCKOPT
int level;
int option;
void *optval;
int optlen;
};
struct transfer_args { // used by NET_STACK_SEND/_RECV
void *data;
size_t datalen;
int flags;
struct sockaddr *addr; // unused in *_SEND and *_RECV cases
int addrlen; // unused in *_SEND and *_RECV cases
};
struct socket_args { // used by NET_STACK_SOCKET
int family;
int type;
int proto;
};
struct socketpair_args { // used by NET_STACK_SOCKETPAIR
void *cookie;
};
struct accept_args { // used by NET_STACK_ACCEPT
void *cookie;
struct sockaddr *addr;
int addrlen;
};
struct sysctl_args { // used by NET_STACK_SYSCTL
int *name;
uint namelen;
void *oldp;
size_t *oldlenp;
void *newp;
size_t newlen;
};
struct control_net_module_args { // used by NET_STACK_CONTROL_NET_MODULE
const char *name;
uint32 op;
void *data;
size_t length;
};
/*
Userland stack driver on_socket_event() callback mecanism implementation:
the driver start a kernel thread waiting on a port for
a NET_STACK_SOCKET_EVENT_MSG message, which come with a socket_event_data block.
The on_socket_event() mechanism stay in driver (kernelland) because it's
only there we can call kernel's notify_select_event() on BONE systems.
For non-BONE systems, we use our own r5_notify_select_event()
implementation, that could be moved into the userland net_server code,
but it'll have split (again!) the /dev/net/stack driver code...
*/
struct notify_socket_event_args { // used by NET_STACK_NOTIFY_SOCKET_EVENT
port_id notify_port; // port waiting for notification, -1 = stop notify
void * cookie; // this cookie value will be pass back in the socket_event_args
};
#define NET_STACK_SOCKET_EVENT_NOTIFICATION 'sevn'
struct socket_event_data {
uint32 event; // B_SELECT_READ, B_SELECT_WRITE or B_SELECT_ERROR
void * cookie; // The cookie as set in notify_socket_event_args for this socket
};
/*
R5.0.3 and before select() kernel support is too buggy to be used, so
here are the structures we used to support select() on sockets, and *only* on
sockets!
*/
struct select_args { // used by NET_STACK_SELECT and NET_STACK_DESELECT
struct selectsync * sync; // in fact, it's the area_id of a r5_selectsync struct!!!
uint32 ref;
};
struct r5_selectsync {
sem_id lock; // lock this r5_selectsync
sem_id wakeup; // sem to release to wakeup select()
struct fd_set rbits; // read event bits field
struct fd_set wbits; // write event bits field
struct fd_set ebits; // exception event bits field
};
struct stack_driver_args {
union {
int integer;
struct socket_args socket;
struct accept_args accept;
struct sockaddr_args sockaddr;
struct sockopt_args sockopt;
struct transfer_args transfer;
struct sysctl_args sysctl;
struct select_args select;
struct control_net_module_args control;
struct socketpair_args socketpair;
} u;
};
#endif /* NET_STACK_DRIVER_H */