LU-13780 lnet: Leverage peer aliveness more efficiently

[fs/lustre-release.git] / lnet / include / lnet / lib-lnet.h

diff --git a/lnet/include/lnet/lib-lnet.h b/lnet/include/lnet/lib-lnet.h
index c531055..862483e 100644 (file)
--- a/lnet/include/lnet/lib-lnet.h
+++ b/lnet/include/lnet/lib-lnet.h
@@ -1114,4 +1114,16 @@ __u32 lnet_sum_stats(struct lnet_element_stats *stats,
 void lnet_usr_translate_stats(struct lnet_ioctl_element_msg_stats *msg_stats,
                              struct lnet_element_stats *stats);
 
+static inline void
+lnet_set_route_aliveness(struct lnet_route *route, bool alive)
+{
+       bool old = atomic_xchg(&route->lr_alive, alive);
+
+       if (old != alive)
+               CERROR("route to %s through %s has gone from %s to %s\n",
+                      libcfs_net2str(route->lr_net),
+                      libcfs_nid2str(route->lr_gateway->lp_primary_nid),
+                      old ? "up" : "down",
+                      alive ? "up" : "down");
+}
 #endif