svn commit: r293466 - in head/sys: net netinet

[Alexander V. Chernikov]

Author: melifaro
Date: Sat Jan  9 06:26:40 2016
New Revision: 293466
URL: https://svnweb.freebsd.org/changeset/base/293466

Log:
  (Temporarily) remove route_redirect_event eventhandler.
  
  Such handler should pass different set of variables, instead
    of directly providing 2 locked route entries.
  Given that it hasn't been really used since at least 2012, remove
    current code.
  Will re-add it after finishing most major routing-related changes.
  
  Discussed with:	np

Modified:
  head/sys/net/route.c
  head/sys/net/route.h
  head/sys/netinet/toecore.c

Modified: head/sys/net/route.c
==============================================================================
--- head/sys/net/route.c	Sat Jan  9 05:39:06 2016	(r293465)
+++ head/sys/net/route.c	Sat Jan  9 06:26:40 2016	(r293466)
@@ -568,7 +568,7 @@ rtredirect_fib(struct sockaddr *dst,
 	struct sockaddr *src,
 	u_int fibnum)
 {
-	struct rtentry *rt, *rt0 = NULL;
+	struct rtentry *rt;
 	int error = 0;
 	short *stat = NULL;
 	struct rt_addrinfo info;
@@ -627,7 +627,7 @@ rtredirect_fib(struct sockaddr *dst,
 			 * Create new route, rather than smashing route to net.
 			 */
 		create:
-			rt0 = rt;
+			RTFREE(rt);
 			rt = NULL;
 		
 			flags |= RTF_DYNAMIC;
@@ -637,21 +637,14 @@ rtredirect_fib(struct sockaddr *dst,
 			info.rti_info[RTAX_NETMASK] = netmask;
 			info.rti_ifa = ifa;
 			info.rti_flags = flags;
-			if (rt0 != NULL)
-				RT_UNLOCK(rt0);	/* drop lock to avoid LOR with RNH */
 			error = rtrequest1_fib(RTM_ADD, &info, &rt, fibnum);
 			if (rt != NULL) {
 				RT_LOCK(rt);
-				if (rt0 != NULL)
-					EVENTHANDLER_INVOKE(route_redirect_event, rt0, rt, dst);
 				flags = rt->rt_flags;
 			}
-			if (rt0 != NULL)
-				RTFREE(rt0);
 			
 			stat = &V_rtstat.rts_dynamic;
 		} else {
-			struct rtentry *gwrt;
 
 			/*
 			 * Smash the current notion of the gateway to
@@ -669,11 +662,7 @@ rtredirect_fib(struct sockaddr *dst,
 			RADIX_NODE_HEAD_LOCK(rnh);
 			RT_LOCK(rt);
 			rt_setgate(rt, rt_key(rt), gateway);
-			gwrt = rtalloc1(gateway, 1, RTF_RNH_LOCKED);
 			RADIX_NODE_HEAD_UNLOCK(rnh);
-			EVENTHANDLER_INVOKE(route_redirect_event, rt, gwrt, dst);
-			if (gwrt)
-				RTFREE_LOCKED(gwrt);
 		}
 	} else
 		error = EHOSTUNREACH;

Modified: head/sys/net/route.h
==============================================================================
--- head/sys/net/route.h	Sat Jan  9 05:39:06 2016	(r293465)
+++ head/sys/net/route.h	Sat Jan  9 06:26:40 2016	(r293466)
@@ -468,8 +468,6 @@ int	rib_lookup_info(uint32_t, const stru
 void	rib_free_info(struct rt_addrinfo *info);
 
 #include <sys/eventhandler.h>
-typedef void (*rtevent_redirect_fn)(void *, struct rtentry *, struct rtentry *, struct sockaddr *);
-EVENTHANDLER_DECLARE(route_redirect_event, rtevent_redirect_fn);
 #endif
 
 #endif

Modified: head/sys/netinet/toecore.c
==============================================================================
--- head/sys/netinet/toecore.c	Sat Jan  9 05:39:06 2016	(r293465)
+++ head/sys/netinet/toecore.c	Sat Jan  9 06:26:40 2016	(r293466)
@@ -70,7 +70,6 @@ static TAILQ_HEAD(, toedev) toedev_list;
 static eventhandler_tag listen_start_eh;
 static eventhandler_tag listen_stop_eh;
 static eventhandler_tag lle_event_eh;
-static eventhandler_tag route_redirect_eh;
 
 static int
 toedev_connect(struct toedev *tod __unused, struct socket *so __unused,
@@ -438,17 +437,6 @@ toe_lle_event(void *arg __unused, struct
 }
 
 /*
- * XXX: implement.
- */
-static void
-toe_route_redirect_event(void *arg __unused, struct rtentry *rt0,
-    struct rtentry *rt1, struct sockaddr *sa)
-{
-
-	return;
-}
-
-/*
  * Returns 0 or EWOULDBLOCK on success (any other value is an error).  0 means
  * lladdr and vtag are valid on return, EWOULDBLOCK means the TOE driver's
  * tod_l2_update will be called later, when the entry is resolved or times out.
@@ -534,8 +522,6 @@ toecore_load(void)
 	    toe_listen_stop_event, NULL, EVENTHANDLER_PRI_ANY);
 	lle_event_eh = EVENTHANDLER_REGISTER(lle_event, toe_lle_event, NULL,
 	    EVENTHANDLER_PRI_ANY);
-	route_redirect_eh = EVENTHANDLER_REGISTER(route_redirect_event,
-	    toe_route_redirect_event, NULL, EVENTHANDLER_PRI_ANY);
 
 	return (0);
 }
@@ -553,7 +539,6 @@ toecore_unload(void)
 	EVENTHANDLER_DEREGISTER(tcp_offload_listen_start, listen_start_eh);
 	EVENTHANDLER_DEREGISTER(tcp_offload_listen_stop, listen_stop_eh);
 	EVENTHANDLER_DEREGISTER(lle_event, lle_event_eh);
-	EVENTHANDLER_DEREGISTER(route_redirect_event, route_redirect_eh);
 
 	mtx_unlock(&toedev_lock);
 	mtx_destroy(&toedev_lock);