projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 17efd7fe MK |
1 | #define RCSINPCBHDR "$Header: in_pcb.h,v 1.7 85/07/31 09:31:17 walsh Exp $" |
| 2 | ||
| 3 | /* | |
| 4 | * Common structure pcb for internet protocol implementation. | |
| 5 | * Here are stored pointers to local and foreign host table | |
| 6 | * entries, local and foreign socket numbers, and pointers | |
| 7 | * up (to a socket structure) and down (to a protocol-specific) | |
| 8 | * control block. | |
| 9 | */ | |
| 10 | #define MAX_IPOPTLEN 60 | |
| 11 | ||
| 12 | struct inpcb { | |
| 13 | struct inpcb *inp_next,*inp_prev; | |
| 14 | /* pointers to other pcb's */ | |
| 15 | struct in_addr inp_faddr; /* foreign host table entry */ | |
| 16 | struct in_addr inp_laddr; /* local host table entry */ | |
| 17 | u_short inp_fport; /* foreign port */ | |
| 18 | u_short inp_lport; /* local port */ | |
| 19 | struct socket *inp_socket; /* back pointer to socket */ | |
| 20 | caddr_t inp_ppcb; /* pointer to per-protocol pcb */ | |
| 21 | struct route inp_route; /* routing entry */ | |
| 22 | char inp_optlen; | |
| 23 | char inp_options[MAX_IPOPTLEN]; | |
| 24 | }; | |
| 25 | ||
| 26 | /* | |
| 27 | * protocol specific structure passed to some pcb controlling routines. | |
| 28 | * new in 4.3 because addition of new protocols required a more generalized | |
| 29 | * in_pcbbind(). rootport <= resvport <= maxport. non-superuser can | |
| 30 | * bind rootport -> maxport, but kernel will bind resvport -> maxport so | |
| 31 | * that projects can test things without being root and without fearing | |
| 32 | * someone may accidentally take their port. | |
| 33 | */ | |
| 34 | ||
| 35 | struct pr_advice { | |
| 36 | u_short rootport; /* ports reserved exclusively for root */ | |
| 37 | u_short resvport; /* ports reserved from random allocation */ | |
| 38 | u_short maxport; /* absolute max port */ | |
| 39 | u_short nowport; /* port last used, initialize to resvport! */ | |
| 40 | u_short portsize; /* size of port (in bytes) */ | |
| 41 | int (*bind_used)(); /* routine called to check before binding */ | |
| 42 | }; | |
| 43 | ||
| 44 | /* | |
| 45 | * protocol specific setsockopt/getsockopt calls. | |
| 46 | */ | |
| 47 | #define SO_IPROUTE 2 | |
| 48 | ||
| 49 | #define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb) | |
| 50 | ||
| 51 | ||
| 52 | #ifdef KERNEL | |
| 53 | ||
| 54 | extern struct inpcb *in_pcblookup(); | |
| 55 | ||
| 56 | #define uwake(inp) \ | |
| 57 | { \ | |
| 58 | sbwakeup(&inp->inp_socket->so_rcv); \ | |
| 59 | sbwakeup(&inp->inp_socket->so_snd); \ | |
| 60 | } | |
| 61 | ||
| 62 | #endif |