From: Christopher Faulet <cfaulet@haproxy.com>
Date: Tue, 21 Sep 2021 13:45:05 +0000 (+0200)
Subject: MINOR: htx: Add a function to know if the free space wraps
X-Git-Tag: v2.5-dev8~12
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=361fbcc14acc4a3bed9161934f2524db8ac2069e;p=thirdparty%2Fhaproxy.git

MINOR: htx: Add a function to know if the free space wraps

the htx_space_wraps() function may now be used to know if the free space of
an HTX message wraps. It does the same as b_space_wraps().
---

diff --git a/include/haproxy/htx.h b/include/haproxy/htx.h
index 0faf296467..c7ae308913 100644
--- a/include/haproxy/htx.h
+++ b/include/haproxy/htx.h
@@ -606,6 +606,17 @@ static inline uint32_t htx_free_data_space(const struct htx *htx)
 	return (free - sizeof(struct htx_blk));
 }
 
+/* Returns non-zero only if the HTX message free space wraps */
+static inline int htx_space_wraps(const struct htx *htx)
+{
+	uint32_t headroom, tailroom;
+
+	headroom = (htx->end_addr - htx->head_addr);
+	tailroom = (htx_pos_to_addr(htx, htx->tail) - htx->tail_addr);
+
+	return (headroom && tailroom);
+}
+
 /* Returns the maximum size for a block, not exceeding <max> bytes. <max> may be
  * set to -1 to have no limit.
  */