From: Christopher Faulet <cfaulet@haproxy.com>
Date: Mon, 7 Jan 2019 12:48:55 +0000 (+0100)
Subject: MINOR: htx: Add an helper function to get the max space usable for a block
X-Git-Tag: v2.0-dev1~255
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=8564c1f04b8a6460d0054a71e03960b92bb5763e;p=thirdparty%2Fhaproxy.git

MINOR: htx: Add an helper function to get the max space usable for a block

This patch must be backported in 1.9 because it will be used by a futher patch
to fix a bug.
---

diff --git a/include/common/htx.h b/include/common/htx.h
index 3385f14851..56a6c9b969 100644
--- a/include/common/htx.h
+++ b/include/common/htx.h
@@ -633,6 +633,15 @@ static inline uint32_t htx_free_space(const struct htx *htx)
 	return (htx->size - htx_used_space(htx));
 }
 
+/* Returns the maximum space usable for data in <htx>. This is in fact the
+ * maximum sice for a uniq block to fill the HTX message. */
+static inline uint32_t htx_max_data_space(const struct htx *htx)
+{
+	if (!htx->size)
+		return 0;
+	return (htx->size - sizeof(htx->blocks[0]));
+}
+
 /* Returns the maximum size available to store some data in <htx> if a new block
  * is reserved.
  */