vde-2/src/vde_switch/port.h

   1 /* Copyright 2005 Renzo Davoli
   2  * Copyright 2002 Jeff Dike
   3  * Licensed under the GPLv2
   4  */
   5
   6 #ifndef __PORT_H__
   7 #define __PORT_H__
   8
   9 #include <sys/socket.h>
  10 #include "switch.h"
  11 #include "bitarray.h"
  12
  13 #define ETH_HEADER_SIZE 14
  14 /* a full ethernet 802.3 frame */
  15 struct ethheader {
  16         unsigned char dest[ETH_ALEN];
  17         unsigned char src[ETH_ALEN];
  18         unsigned char proto[2];
  19 };
  20
  21 struct packet {
  22         struct ethheader header;
  23   unsigned char data[1504]; /*including trailer, IF ANY */
  24 };
  25
  26 struct bipacket {
  27         char filler[4];
  28         struct packet p;
  29 };
  30
  31 #define pgetprio(X) ((X)[0] >> 5)
  32 #define pgetcfi(X)  (((X)[0] >> 4) & 1)
  33 #define pgetvlan(X) (((X)[0] & 0xf) << 8 + (X)[1])
  34 #define psetprio(X,V) ((X)[0]= ((X)[0] & 0x1f) | (V)<<5)
  35 #define psetcfi(X,V)  ((X)[0]= ((X)[0] & 0xef) | (V&1)<<4)
  36 #define psetvlan(X,V) ({(X)[1]=(V)&0xff;(X)[0]=((X)[0] & 0xf0) | ((V)>>8) & 0xf; (V); })
  37
  38 struct mod_support {
  39         char *modname;
  40         int (*sender)(int fd, int fd_ctl, void *packet, int len, void *data, int port);
  41         int (*newport)(int fd_ctl,int portno,uid_t user);
  42         void (*delep)(int fd, void* data, void *descr);
  43         void (*delport)(int fd,int portno);
  44 };
  45
  46 extern int setup_ep(int portno, int fd_ctl,
  47                 void *data,
  48                 uid_t user,
  49                 struct mod_support *modfun);
  50
  51 extern void setup_description(int portno, int fd_ctl, char *descr);
  52
  53 extern int close_ep(int portno, int fd_ctl);
  54
  55 extern void handle_in_packet(int port, struct packet *packet, int len);
  56
  57 extern bitarray validvlan;
  58 int portflag(int op, int f);
  59 #define P_GETFLAG 0
  60 #define P_SETFLAG 1
  61 #define P_ADDFLAG 2
  62 #define P_CLRFLAG 3
  63
  64 #define HUB_TAG 0x1
  65
  66 void port_init(int numports);
  67
  68
  69 #define DISCARDING 0
  70 #define LEARNING   1
  71 /* forwarding implies learning */
  72 #define FORWARDING 3
  73
  74 #ifdef FSTP
  75 void port_send_packet(int portno, void *packet, int len);
  76 void portset_send_packet(bitarray portset, void *packet, int len);
  77 void port_set_status(int portno, int vlan, int status);
  78 int port_get_status(int portno, int vlan);
  79 int port_getcost(int port);
  80 #endif
  81
  82 #endif