From: Stephen Worley <sworley@cumulusnetworks.com>
Date: Wed, 23 Oct 2019 18:37:20 +0000 (-0400)
Subject: lib: Make nexthop_next* use const for nexthop
X-Git-Tag: base_7.3~219^2~5
X-Git-Url: https://git.puffer.fish/?a=commitdiff_plain;h=17c25e0368e765ec23b7c94e65f5d4e44102f77e;p=mirror%2Ffrr.git

lib: Make nexthop_next* use const for nexthop

Make nexthop_next() and nexthop_next_active_resolved() use
const for the nexthop argument. They should not be modifying so
it makes sense here.

Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
---

diff --git a/lib/nexthop.c b/lib/nexthop.c
index 0171318827..73c2de0cd8 100644
--- a/lib/nexthop.c
+++ b/lib/nexthop.c
@@ -349,7 +349,7 @@ const char *nexthop2str(const struct nexthop *nexthop, char *str, int size)
  * left branch is 'resolved' and right branch is 'next':
  * https://en.wikipedia.org/wiki/Tree_traversal#/media/File:Sorted_binary_tree_preorder.svg
  */
-struct nexthop *nexthop_next(struct nexthop *nexthop)
+struct nexthop *nexthop_next(const struct nexthop *nexthop)
 {
 	if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE))
 		return nexthop->resolved;
@@ -365,7 +365,7 @@ struct nexthop *nexthop_next(struct nexthop *nexthop)
 }
 
 /* Return the next nexthop in the tree that is resolved and active */
-struct nexthop *nexthop_next_active_resolved(struct nexthop *nexthop)
+struct nexthop *nexthop_next_active_resolved(const struct nexthop *nexthop)
 {
 	struct nexthop *next = nexthop_next(nexthop);
 
diff --git a/lib/nexthop.h b/lib/nexthop.h
index 480c4cc3dd..fe029f1867 100644
--- a/lib/nexthop.h
+++ b/lib/nexthop.h
@@ -161,8 +161,9 @@ extern int nexthop_same_firsthop(struct nexthop *next1, struct nexthop *next2);
 
 extern const char *nexthop2str(const struct nexthop *nexthop,
 			       char *str, int size);
-extern struct nexthop *nexthop_next(struct nexthop *nexthop);
-extern struct nexthop *nexthop_next_active_resolved(struct nexthop *nexthop);
+extern struct nexthop *nexthop_next(const struct nexthop *nexthop);
+extern struct nexthop *
+nexthop_next_active_resolved(const struct nexthop *nexthop);
 extern unsigned int nexthop_level(struct nexthop *nexthop);
 /* Copies to an already allocated nexthop struct */
 extern void nexthop_copy(struct nexthop *copy, const struct nexthop *nexthop,