| 1 | /* in_pcb.h 4.1 81/11/20 */ |
| 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 | struct inpcb { |
| 11 | struct inpcb *inp_next,*inp_prev; |
| 12 | /* pointers to other pcb's */ |
| 13 | struct in_addr inp_faddr; /* foreign host table entry */ |
| 14 | u_short inp_fport; /* foreign port */ |
| 15 | struct in_addr inp_laddr; /* local host table entry */ |
| 16 | u_short inp_lport; /* local port */ |
| 17 | struct socket *inp_socket; /* back pointer to socket */ |
| 18 | caddr_t inp_ppcb; /* pointer to per-protocol pcb */ |
| 19 | }; |
| 20 | |
| 21 | #define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb) |
| 22 | |
| 23 | #ifdef KERNEL |
| 24 | struct inpcb *in_pcblookup(); |
| 25 | #endif |