Handle TOS 0 also...

[doldaconnect.git] / daemon / net.c

diff --git a/daemon/net.c b/daemon/net.c
index 1eeaff1..a5ff113 100644 (file)
--- a/daemon/net.c
+++ b/daemon/net.c
@@ -55,6 +55,12 @@ static struct configvar myvars[] =
     /* Only for direct mode */
     {CONF_VAR_IPV4, "visibleipv4", {.ipv4 = {0}}},
     {CONF_VAR_STRING, "publicif", {.str = L""}},
+    /* Diffserv should be supported on IPv4, too, but I don't know the
+     * API to do that. */
+    {CONF_VAR_INT, "diffserv-mincost", {.num = 0}},
+    {CONF_VAR_INT, "diffserv-maxrel", {.num = 0}},
+    {CONF_VAR_INT, "diffserv-maxtp", {.num = 0}},
+    {CONF_VAR_INT, "diffserv-mindelay", {.num = 0}},
     {CONF_VAR_END}
 };
 
@@ -270,6 +276,23 @@ void putsock(struct socket *sk)
     }
 }
 
+void sockpushdata(struct socket *sk, void *buf, size_t size)
+{
+    switch(sk->type)
+    {
+    case SOCK_STREAM:
+       sizebuf(&sk->inbuf.s.buf, &sk->inbuf.s.bufsize, sk->inbuf.s.datasize + size, 1, 1);
+       memmove(sk->inbuf.s.buf + size, sk->inbuf.s.buf, sk->inbuf.s.datasize);
+       memcpy(sk->inbuf.s.buf, buf, size);
+       sk->inbuf.s.datasize += size;
+       break;
+    case SOCK_DGRAM:
+       /* XXX */
+       break;
+    }
+    return;
+}
+
 void *sockgetinbuf(struct socket *sk, size_t *size)
 {
     void *buf;
@@ -574,6 +597,7 @@ struct socket *netcslisten(int type, struct sockaddr *name, socklen_t namelen, v
 struct socket *netcslistenlocal(int type, struct sockaddr *name, socklen_t namelen, void (*func)(struct socket *, struct socket *, void *), void *data)
 {
     struct socket *sk;
+    int intbuf;
     
     /* I don't know if this is actually correct (it probably isn't),
      * but since, at on least Linux systems, PF_* are specifically
@@ -584,6 +608,11 @@ struct socket *netcslistenlocal(int type, struct sockaddr *name, socklen_t namel
     if((sk = mksock(name->sa_family, type)) == NULL)
        return(NULL);
     sk->state = SOCK_LST;
+    if(confgetint("net", "reuseaddr"))
+    {
+       intbuf = 1;
+       setsockopt(sk->fd, SOL_SOCKET, SO_REUSEADDR, &intbuf, sizeof(intbuf));
+    }
     if(bind(sk->fd, name, namelen) < 0)
     {
        putsock(sk);
@@ -831,16 +860,72 @@ int pollsocks(int timeout)
 
 int socksettos(struct socket *sk, int tos)
 {
+    int buf;
+    
     if(sk->family == AF_INET)
     {
-       if(setsockopt(sk->fd, SOL_IP, IP_TOS, &tos, sizeof(tos)) < 0)
+       switch(tos)
+       {
+       case 0:
+           buf = 0;
+           break;
+       case SOCK_TOS_MINCOST:
+           buf = 0x02;
+           break;
+       case SOCK_TOS_MAXREL:
+           buf = 0x04;
+           break;
+       case SOCK_TOS_MAXTP:
+           buf = 0x08;
+           break;
+       case SOCK_TOS_MINDELAY:
+           buf = 0x10;
+           break;
+       default:
+           flog(LOG_WARNING, "attempted to set unknown TOS value %i to IPv4 sock", tos);
+           return(-1);
+       }
+       if(setsockopt(sk->fd, SOL_IP, IP_TOS, &buf, sizeof(buf)) < 0)
        {
            flog(LOG_WARNING, "could not set sock TOS to %i: %s", tos, strerror(errno));
            return(-1);
        }
        return(0);
     }
-    /* XXX: How does the IPv6 traffic class work? */
+    if(sk->family == AF_INET6)
+    {
+       switch(tos)
+       {
+       case 0:
+           buf = 0;
+       case SOCK_TOS_MINCOST:
+           buf = confgetint("net", "diffserv-mincost");
+           break;
+       case SOCK_TOS_MAXREL:
+           buf = confgetint("net", "diffserv-maxrel");
+           break;
+       case SOCK_TOS_MAXTP:
+           buf = confgetint("net", "diffserv-maxtp");
+           break;
+       case SOCK_TOS_MINDELAY:
+           buf = confgetint("net", "diffserv-mindelay");
+           break;
+       default:
+           flog(LOG_WARNING, "attempted to set unknown TOS value %i to IPv4 sock", tos);
+           return(-1);
+       }
+       /*
+         On Linux, the API IPv6 flow label management doesn't seem to
+         be entirely complete, so I guess this will have to wait.
+         
+       if(setsockopt(...) < 0)
+       {
+           flog(LOG_WARNING, "could not set sock traffic class to %i: %s", tos, strerror(errno));
+           return(-1);
+       }
+       */
+       return(0);
+    }
     flog(LOG_WARNING, "could not set TOS on sock of family %i", sk->family);
     return(1);
 }