From: Ben Pfaff <blp@nicira.com>
Date: Thu, 11 Feb 2010 22:59:01 +0000 (-0800)
Subject: ofpbuf: Mark ofpbuf_headroom(), ofpbuf_tailroom() parameters const.
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5019f688d4e3117960503d57978ff2e0fb3771e0;p=openvswitch

ofpbuf: Mark ofpbuf_headroom(), ofpbuf_tailroom() parameters const.
---

diff --git a/lib/ofpbuf.c b/lib/ofpbuf.c
index bb216791..fd01ea8d 100644
--- a/lib/ofpbuf.c
+++ b/lib/ofpbuf.c
@@ -103,7 +103,7 @@ ofpbuf_delete(struct ofpbuf *b)
  * commonly, the data in a ofpbuf is at its beginning, and thus the ofpbuf's
  * headroom is 0.) */
 size_t
-ofpbuf_headroom(struct ofpbuf *b) 
+ofpbuf_headroom(const struct ofpbuf *b)
 {
     return (char*)b->data - (char*)b->base;
 }
@@ -111,7 +111,7 @@ ofpbuf_headroom(struct ofpbuf *b)
 /* Returns the number of bytes that may be appended to the tail end of ofpbuf
  * 'b' before the ofpbuf must be reallocated. */
 size_t
-ofpbuf_tailroom(struct ofpbuf *b) 
+ofpbuf_tailroom(const struct ofpbuf *b)
 {
     return (char*)ofpbuf_end(b) - (char*)ofpbuf_tail(b);
 }
diff --git a/lib/ofpbuf.h b/lib/ofpbuf.h
index 259e703c..b65f79ee 100644
--- a/lib/ofpbuf.h
+++ b/lib/ofpbuf.h
@@ -64,8 +64,8 @@ void ofpbuf_reserve(struct ofpbuf *, size_t);
 void *ofpbuf_push_uninit(struct ofpbuf *b, size_t);
 void *ofpbuf_push(struct ofpbuf *b, const void *, size_t);
 
-size_t ofpbuf_headroom(struct ofpbuf *);
-size_t ofpbuf_tailroom(struct ofpbuf *);
+size_t ofpbuf_headroom(const struct ofpbuf *);
+size_t ofpbuf_tailroom(const struct ofpbuf *);
 void ofpbuf_prealloc_headroom(struct ofpbuf *, size_t);
 void ofpbuf_prealloc_tailroom(struct ofpbuf *, size_t);
 void ofpbuf_trim(struct ofpbuf *);