Modify the kernel to use the new pr_usrreqs interface rather than the old

pr_usrreq mechanism which was poorly designed and error-prone.  This
commit renames pr_usrreq to pr_ousrreq so that old code which depended on it
would break in an obvious manner.  This commit also implements the new
interface for TCP, although the old function is left as an example
(#ifdef'ed out).  This commit ALSO fixes a longstanding bug in the
TCP timer processing (introduced by davidg on 1995/04/12) which caused
timer processing on a TCB to always stop after a single timer had
expired (because it misinterpreted the return value from tcp_usrreq()
to indicate that the TCB had been deleted).  Finally, some code
related to polling has been deleted from if.c because it is not
relevant t -current and doesn't look at all like my current code.

1 files changed, 9 insertions, 24 deletions

diff --git a/sys/net/if.c b/sys/net/if.c
index ce12fb8..bfcd1eb 100644
--- a/sys/net/if.c
+++ b/sys/net/if.c
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)if.c	8.3 (Berkeley) 1/4/94
- * $Id: if.c,v 1.31 1996/06/10 23:07:26 gpalmer Exp $
+ * $Id: if.c,v 1.32 1996/06/12 19:23:59 gpalmer Exp $
  */
 
 #include <sys/param.h>
@@ -162,18 +162,6 @@ if_attach(ifp)
 		while (namelen != 0)
 			sdl->sdl_data[--namelen] = 0xff;
 	}
-	/*
-	 * If they provided a slow input queue, initialize it.
-	 */
-	if (ifp->if_poll_slowq) {
-		struct ifqueue *ifq = ifp->if_poll_slowq;
-
-		bzero(ifq, sizeof *ifq);
-		ifq->ifq_maxlen = ifqmaxlen;
-#ifdef POLLING
-		ifq->if_poll_recv = if_poll_recv_slow;
-#endif
-	}
 }
 /*
  * Locate an interface based on a complete address.
@@ -583,9 +571,9 @@ ifioctl(so, cmd, data, p)
 		if (so->so_proto == 0)
 			return (EOPNOTSUPP);
 #ifndef COMPAT_43
-		return ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL,
-			(struct mbuf *)cmd, (struct mbuf *)data,
-			(struct mbuf *)ifp));
+		return ((*so->so_proto->pr_usrreqs->pru_control)(so, cmd,
+								 data,
+								 ifp));
 #else
 	    {
 		int ocmd = cmd;
@@ -623,14 +611,10 @@ ifioctl(so, cmd, data, p)
 		case OSIOCGIFNETMASK:
 			cmd = SIOCGIFNETMASK;
 		}
-		error =  ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL,
-			  /*
-			   * XXX callees reverse the following bogus casts,
-			   * but it would be easier to use a separate
-			   * interface that is guaranteed to work.
-			   */
-			  (struct mbuf *)cmd, (struct mbuf *)data,
-			  (struct mbuf *)ifp));
+		error =  ((*so->so_proto->pr_usrreqs->pru_control)(so,
+								   cmd,
+								   data,
+								   ifp));
 		switch (ocmd) {
 
 		case OSIOCGIFADDR:
@@ -759,3 +743,4 @@ ifconf(cmd, data)
 }
 
 SYSCTL_NODE(_net, PF_LINK, link, CTLFLAG_RW, 0, "Link layers");
+SYSCTL_NODE(_net_link, 0, generic, CTLFLAG_RW, 0, "Generic link-management");