i386/MIT/course/src/git.lab/inc/ns.h

   1 // See COPYRIGHT for copyright information.
   2
   3 #ifndef JOS_INC_NS_H
   4 #define JOS_INC_NS_H
   5
   6 #include <inc/types.h>
   7 #include <inc/mmu.h>
   8 #include <lwip/sockets.h>
   9
  10 struct jif_pkt {
  11         int jp_len;
  12         char jp_data[0];
  13 };
  14
  15 // Definitions for requests from clients to network server
  16 enum {
  17         // The following messages pass a page containing an Nsipc.
  18         // Accept returns a Nsret_accept on the request page.
  19         NSREQ_ACCEPT = 1,
  20         NSREQ_BIND,
  21         NSREQ_SHUTDOWN,
  22         NSREQ_CLOSE,
  23         NSREQ_CONNECT,
  24         NSREQ_LISTEN,
  25         // Recv returns a Nsret_recv on the request page.
  26         NSREQ_RECV,
  27         NSREQ_SEND,
  28         NSREQ_SOCKET,
  29
  30         // The following two messages pass a page containing a struct jif_pkt
  31         NSREQ_INPUT,
  32         // NSREQ_OUTPUT, unlike all other messages, is sent *from* the
  33         // network server, to the output environment
  34         NSREQ_OUTPUT,
  35
  36         // The following message passes no page
  37         NSREQ_TIMER,
  38 };
  39
  40 union Nsipc {
  41         struct Nsreq_accept {
  42                 int req_s;
  43         } accept;
  44
  45         struct Nsret_accept {
  46                 struct sockaddr ret_addr;
  47                 socklen_t ret_addrlen;
  48         } acceptRet;
  49
  50         struct Nsreq_bind {
  51                 int req_s;
  52                 struct sockaddr req_name;
  53                 socklen_t req_namelen;
  54         } bind;
  55
  56         struct Nsreq_shutdown {
  57                 int req_s;
  58                 int req_how;
  59         } shutdown;
  60
  61         struct Nsreq_close {
  62                 int req_s;
  63         } close;
  64
  65         struct Nsreq_connect {
  66                 int req_s;
  67                 struct sockaddr req_name;
  68                 socklen_t req_namelen;
  69         } connect;
  70
  71         struct Nsreq_listen {
  72                 int req_s;
  73                 int req_backlog;
  74         } listen;
  75
  76         struct Nsreq_recv {
  77                 int req_s;
  78                 int req_len;
  79                 unsigned int req_flags;
  80         } recv;
  81
  82         struct Nsret_recv {
  83                 char ret_buf[0];
  84         } recvRet;
  85
  86         struct Nsreq_send {
  87                 int req_s;
  88                 int req_size;
  89                 unsigned int req_flags;
  90                 char req_buf[0];
  91         } send;
  92
  93         struct Nsreq_socket {
  94                 int req_domain;
  95                 int req_type;
  96                 int req_protocol;
  97         } socket;
  98
  99         struct jif_pkt pkt;
 100
 101         // Ensure Nsipc is one page
 102         char _pad[PGSIZE];
 103 };
 104
 105 #endif // !JOS_INC_NS_H