diff --git a/include/proto/buffers.h b/include/proto/buffers.h
index f35da6496..5caff85fb 100644
--- a/include/proto/buffers.h
+++ b/include/proto/buffers.h
@@ -69,6 +69,75 @@ static inline void buffer_init(struct buffer *buf)
 /* These functions are used to compute various buffer area sizes */
 /*****************************************************************/
 
+/* Returns an absolute pointer for a position relative to the current buffer's
+ * pointer. It is written so that it is optimal when <ofs> is a const. It is
+ * written as a macro instead of an inline function so that the compiler knows
+ * when it can optimize out the sign test on <ofs> when passed an unsigned int.
+ */
+#define b_ptr(b, ofs) \
+	({            \
+		char *__ret = (b)->p + (ofs);                   \
+		if ((ofs) > 0 && __ret >= (b)->data + (b)->size)    \
+			__ret -= (b)->size;                     \
+		else if ((ofs) < 0 && __ret < (b)->data)        \
+			__ret += (b)->size;                     \
+		__ret;                                          \
+	})
+
+/* Returns the start of the input data in a buffer */
+static inline char *bi_ptr(const struct buffer *b)
+{
+	return b->p;
+}
+
+/* Returns the end of the input data in a buffer (pointer to next
+ * insertion point).
+ */
+static inline char *bi_end(const struct buffer *b)
+{
+	char *ret = b->p + b->i;
+
+	if (ret >= b->data + b->size)
+		ret -= b->size;
+	return ret;
+}
+
+/* Returns the amount of input data that can contiguously be read at once */
+static inline int bi_contig_data(const struct buffer *b)
+{
+	int data = b->data + b->size - b->p;
+
+	if (data > b->i)
+		data = b->i;
+	return data;
+}
+
+/* Returns the start of the output data in a buffer */
+static inline char *bo_ptr(const struct buffer *b)
+{
+	char *ret = b->p - b->o;
+
+	if (ret < b->data)
+		ret += b->size;
+	return ret;
+}
+
+/* Returns the end of the output data in a buffer */
+static inline char *bo_end(const struct buffer *b)
+{
+	return b->p;
+}
+
+/* Returns the amount of output data that can contiguously be read at once */
+static inline int bo_contig_data(const struct buffer *b)
+{
+	char *beg = b->p - b->o;
+
+	if (beg < b->data)
+		return b->data - beg;
+	return b->o;
+}
+
 /* Return the buffer's length in bytes by summing the input and the output */
 static inline int buffer_len(const struct buffer *buf)
 {
diff --git a/src/buffers.c b/src/buffers.c
index 0352177a4..40aa57a96 100644
--- a/src/buffers.c
+++ b/src/buffers.c
@@ -46,7 +46,7 @@ unsigned long long buffer_forward(struct buffer *buf, unsigned long long bytes)
 	if (!bytes)
 		return 0;
 	if (bytes <= (unsigned long long)buf->i) {
-		buf->p = buffer_wrap_add(buf, buf->p + bytes);
+		buf->p = b_ptr(buf, (unsigned int)bytes);
 		buf->o += bytes;
 		buf->i -= bytes;
 		buf->flags &= ~BF_OUT_EMPTY;
@@ -54,7 +54,7 @@ unsigned long long buffer_forward(struct buffer *buf, unsigned long long bytes)
 	}
 
 	forwarded = buf->i;
-	buf->p = buffer_wrap_add(buf, buf->p + forwarded);
+	buf->p = bi_end(buf);
 	buf->o += forwarded;
 	buf->i = 0;
 
@@ -122,7 +122,7 @@ int buffer_write(struct buffer *buf, const char *msg, int len)
 
 	memcpy(buf->p, msg, len);
 	buf->o += len;
-	buf->p = buffer_wrap_add(buf, buf->p + len);
+	buf->p = b_ptr(buf, len);
 	buf->total += len;
 
 	buf->flags &= ~(BF_OUT_EMPTY|BF_FULL);
@@ -147,7 +147,7 @@ int buffer_put_char(struct buffer *buf, char c)
 	if (buf->flags & BF_FULL)
 		return -1;
 
-	*buffer_wrap_add(buf, buf->p + buf->i) = c;
+	*bi_end(buf) = c;
 
 	buf->i++;
 	if (buffer_len(buf) >= buffer_max_len(buf))
@@ -198,7 +198,7 @@ int buffer_put_block(struct buffer *buf, const char *blk, int len)
 
 	/* OK so the data fits in the buffer in one or two blocks */
 	max = buffer_contig_space_with_res(buf, buf->size - max);
-	memcpy(buffer_wrap_add(buf, buf->p + buf->i), blk, MIN(len, max));
+	memcpy(bi_end(buf), blk, MIN(len, max));
 	if (len > max)
 		memcpy(buf->data, blk + max, len - max);
 
@@ -213,7 +213,7 @@ int buffer_put_block(struct buffer *buf, const char *blk, int len)
 		}
 		buf->o += fwd;
 		buf->i -= fwd;
-		buf->p = buffer_wrap_add(buf, buf->p + fwd);
+		buf->p = b_ptr(buf, fwd);
 		buf->flags &= ~BF_OUT_EMPTY;
 	}
 
@@ -251,7 +251,7 @@ int buffer_get_line(struct buffer *buf, char *str, int len)
 		goto out;
 	}
 
-	p = buffer_wrap_sub(buf, buf->p - buf->o);
+	p = bo_ptr(buf);
 
 	if (max > buf->o) {
 		max = buf->o;
@@ -297,14 +297,14 @@ int buffer_get_block(struct buffer *buf, char *blk, int len, int offset)
 		return 0;
 	}
 
-	firstblock = buf->data + buf->size - buffer_wrap_sub(buf, buf->p - buf->o);
+	firstblock = buf->data + buf->size - bo_ptr(buf);
 	if (firstblock > offset) {
 		if (firstblock >= len + offset) {
-			memcpy(blk, buffer_wrap_sub(buf, buf->p - buf->o) + offset, len);
+			memcpy(blk, bo_ptr(buf) + offset, len);
 			return len;
 		}
 
-		memcpy(blk, buffer_wrap_sub(buf, buf->p - buf->o) + offset, firstblock - offset);
+		memcpy(blk, bo_ptr(buf) + offset, firstblock - offset);
 		memcpy(blk + firstblock - offset, buf->data, len - firstblock + offset);
 		return len;
 	}
@@ -329,16 +329,16 @@ int buffer_replace2(struct buffer *b, char *pos, char *end, const char *str, int
 
 	delta = len - (end - pos);
 
-	if (delta + buffer_wrap_add(b, b->p + b->i) >= b->data + b->size)
+	if (bi_end(b) + delta >= b->data + b->size)
 		return 0;  /* no space left */
 
 	if (buffer_not_empty(b) &&
-	    delta + buffer_wrap_add(b, b->p + b->i) > buffer_wrap_sub(b, b->p - b->o) &&
-	    buffer_wrap_sub(b, b->p - b->o) >= buffer_wrap_add(b, b->p + b->i))
+	    bi_end(b) + delta > bo_ptr(b) &&
+	    bo_ptr(b) >= bi_end(b))
 		return 0;  /* no space left before wrapping data */
 
 	/* first, protect the end of the buffer */
-	memmove(end + delta, end, buffer_wrap_add(b, b->p + b->i) - end);
+	memmove(end + delta, end, bi_end(b) - end);
 
 	/* now, copy str over pos */
 	if (len)
@@ -371,11 +371,11 @@ int buffer_insert_line2(struct buffer *b, char *pos, const char *str, int len)
 
 	delta = len + 2;
 
-	if (delta + buffer_wrap_add(b, b->p + b->i) >= b->data + b->size)
+	if (bi_end(b) + delta >= b->data + b->size)
 		return 0;  /* no space left */
 
 	/* first, protect the end of the buffer */
-	memmove(pos + delta, pos, buffer_wrap_add(b, b->p + b->i) - pos);
+	memmove(pos + delta, pos, bi_end(b) - pos);
 
 	/* now, copy str over pos */
 	if (len && str) {
@@ -405,7 +405,7 @@ void buffer_bounce_realign(struct buffer *buf)
 	int advance, to_move;
 	char *from, *to;
 
-	from = buffer_wrap_sub(buf, buf->p - buf->o);
+	from = bo_ptr(buf);
 	advance = buf->data + buf->size - from;
 	if (!advance)
 		return;
@@ -435,11 +435,11 @@ void buffer_bounce_realign(struct buffer *buf)
 			 * empty area is either between buf->r and from or before from or
 			 * after buf->r.
 			 */
-			if (from > buffer_wrap_add(buf, buf->p + buf->i)) {
-				if (to >= buffer_wrap_add(buf, buf->p + buf->i) && to < from)
+			if (from > bi_end(buf)) {
+				if (to >= bi_end(buf) && to < from)
 					break;
-			} else if (from < buffer_wrap_add(buf, buf->p + buf->i)) {
-				if (to < from || to >= buffer_wrap_add(buf, buf->p + buf->i))
+			} else if (from < bi_end(buf)) {
+				if (to < from || to >= bi_end(buf))
 					break;
 			}
 
diff --git a/src/proto_http.c b/src/proto_http.c
index 0dc2b51d6..eac0319cf 100644
--- a/src/proto_http.c
+++ b/src/proto_http.c
@@ -1744,10 +1744,10 @@ void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, i
 int http_parse_chunk_size(struct http_msg *msg)
 {
 	const struct buffer *buf = msg->buf;
-	const char *ptr = buffer_wrap_add(buf, buf->p + msg->next);
+	const char *ptr = b_ptr(buf, msg->next);
 	const char *ptr_old = ptr;
 	const char *end = buf->data + buf->size;
-	const char *stop = buffer_wrap_add(buf, buf->p + buf->i);
+	const char *stop = bi_end(buf);
 	unsigned int chunk = 0;
 
 	/* The chunk size is in the following form, though we are only
@@ -1856,8 +1856,8 @@ int http_forward_trailers(struct http_msg *msg)
 	/* we have msg->next which points to next line. Look for CRLF. */
 	while (1) {
 		const char *p1 = NULL, *p2 = NULL;
-		const char *ptr = buffer_wrap_add(buf, buf->p + msg->next);
-		const char *stop = buffer_wrap_add(buf, buf->p + buf->i);
+		const char *ptr = b_ptr(buf, msg->next);
+		const char *stop = bi_end(buf);
 		int bytes;
 
 		/* scan current line and stop at LF or CRLF */
@@ -1890,7 +1890,7 @@ int http_forward_trailers(struct http_msg *msg)
 		if (p2 >= buf->data + buf->size)
 			p2 = buf->data;
 
-		bytes = p2 - buffer_wrap_add(buf, buf->p + msg->next);
+		bytes = p2 - b_ptr(buf, msg->next);
 		if (bytes < 0)
 			bytes += buf->size;
 
@@ -1899,7 +1899,7 @@ int http_forward_trailers(struct http_msg *msg)
 		if (msg->sov >= buf->size)
 			msg->sov -= buf->size;
 
-		if (p1 == buffer_wrap_add(buf, buf->p + msg->next)) {
+		if (p1 == b_ptr(buf, msg->next)) {
 			/* LF/CRLF at beginning of line => end of trailers at p2.
 			 * Everything was scheduled for forwarding, there's nothing
 			 * left from this message.
@@ -2058,8 +2058,8 @@ int http_wait_for_request(struct session *s, struct buffer *req, int an_bit)
 	if (buffer_not_empty(req) && msg->msg_state < HTTP_MSG_ERROR) {
 		if ((txn->flags & TX_NOT_FIRST) &&
 		    unlikely((req->flags & BF_FULL) ||
-			     buffer_wrap_add(req, req->p + req->i) < buffer_wrap_add(req, req->p + msg->next) ||
-			     buffer_wrap_add(req, req->p + req->i) > req->data + req->size - global.tune.maxrewrite)) {
+			     bi_end(req) < b_ptr(req, msg->next) ||
+			     bi_end(req) > req->data + req->size - global.tune.maxrewrite)) {
 			if (req->o) {
 				if (req->flags & (BF_SHUTW|BF_SHUTW_NOW|BF_WRITE_ERROR|BF_WRITE_TIMEOUT))
 					goto failed_keep_alive;
@@ -2068,8 +2068,8 @@ int http_wait_for_request(struct session *s, struct buffer *req, int an_bit)
 				req->flags |= BF_READ_DONTWAIT; /* try to get back here ASAP */
 				return 0;
 			}
-			if (buffer_wrap_add(req, req->p + req->i) < buffer_wrap_add(req, req->p + msg->next) ||
-			    buffer_wrap_add(req, req->p + req->i) > req->data + req->size - global.tune.maxrewrite)
+			if (bi_end(req) < b_ptr(req, msg->next) ||
+			    bi_end(req) > req->data + req->size - global.tune.maxrewrite)
 				http_message_realign(msg);
 		}
 
@@ -2082,8 +2082,8 @@ int http_wait_for_request(struct session *s, struct buffer *req, int an_bit)
 		 */
 		if ((txn->flags & TX_NOT_FIRST) &&
 		    unlikely((s->rep->flags & BF_FULL) ||
-			     buffer_wrap_add(s->rep, s->rep->p + s->rep->i) < buffer_wrap_add(s->rep, s->rep->p + txn->rsp.next) ||
-			     buffer_wrap_add(s->rep, s->rep->p + s->rep->i) > s->rep->data + s->rep->size - global.tune.maxrewrite)) {
+			     bi_end(s->rep) < b_ptr(s->rep, txn->rsp.next) ||
+			     bi_end(s->rep) > s->rep->data + s->rep->size - global.tune.maxrewrite)) {
 			if (s->rep->o) {
 				if (s->rep->flags & (BF_SHUTW|BF_SHUTW_NOW|BF_WRITE_ERROR|BF_WRITE_TIMEOUT))
 					goto failed_keep_alive;
@@ -3812,7 +3812,7 @@ void http_end_txn_clean_session(struct session *s)
 	if (s->req->i) {
 		if (s->rep->o &&
 		    !(s->rep->flags & BF_FULL) &&
-		    buffer_wrap_add(s->rep, s->rep->p + s->rep->i) <= s->rep->data + s->rep->size - global.tune.maxrewrite)
+		    bi_end(s->rep) <= s->rep->data + s->rep->size - global.tune.maxrewrite)
 			s->rep->flags |= BF_EXPECT_MORE;
 	}
 
@@ -4469,8 +4469,8 @@ int http_wait_for_response(struct session *s, struct buffer *rep, int an_bit)
 	 */
 	if (buffer_not_empty(rep) && msg->msg_state < HTTP_MSG_ERROR) {
 		if (unlikely((rep->flags & BF_FULL) ||
-			     buffer_wrap_add(rep, rep->p + rep->i) < buffer_wrap_add(rep, rep->p + msg->next) ||
-			     buffer_wrap_add(rep, rep->p + rep->i) > rep->data + rep->size - global.tune.maxrewrite)) {
+			     bi_end(rep) < b_ptr(rep, msg->next) ||
+			     bi_end(rep) > rep->data + rep->size - global.tune.maxrewrite)) {
 			if (rep->o) {
 				/* some data has still not left the buffer, wake us once that's done */
 				if (rep->flags & (BF_SHUTW|BF_SHUTW_NOW|BF_WRITE_ERROR|BF_WRITE_TIMEOUT))
@@ -7221,24 +7221,24 @@ void http_capture_bad_message(struct error_snapshot *es, struct session *s,
 {
 	struct buffer *buf = msg->buf;
 
-	if (buffer_wrap_add(buf, buf->p + buf->i) <= (buf->p + msg->som)) { /* message wraps */
+	if (bi_end(buf) <= (buf->p + msg->som)) { /* message wraps */
 		int len1 = buf->size - msg->som - (buf->p - buf->data);
-		es->len = buffer_wrap_add(buf, buf->p + buf->i) - (buf->p + msg->som) + buf->size;
+		es->len = bi_end(buf) - (buf->p + msg->som) + buf->size;
 		memcpy(es->buf, buf->p + msg->som, MIN(len1, sizeof(es->buf)));
 		if (es->len > len1 && len1 < sizeof(es->buf))
 			memcpy(es->buf, buf->data, MIN(es->len, sizeof(es->buf)) - len1);
 	}
 	else {
-		es->len = buffer_wrap_add(buf, buf->p + buf->i) - (buf->p + msg->som);
+		es->len = bi_end(buf) - (buf->p + msg->som);
 		memcpy(es->buf, buf->p + msg->som, MIN(es->len, sizeof(es->buf)));
 	}
 
 	if (msg->err_pos >= 0)
 		es->pos  = msg->err_pos - msg->som - (buf->p - buf->data);
-	else if (buffer_wrap_add(buf, buf->p + msg->next) >= (buf->p + msg->som))
-		es->pos  = buffer_wrap_add(buf, buf->p + msg->next) - (buf->p + msg->som);
+	else if (b_ptr(buf, msg->next) >= (buf->p + msg->som))
+		es->pos  = b_ptr(buf, msg->next) - (buf->p + msg->som);
 	else
-		es->pos  = buffer_wrap_add(buf, buf->p + msg->next) - (buf->p + msg->som) + buf->size;
+		es->pos  = b_ptr(buf, msg->next) - (buf->p + msg->som) + buf->size;
 
 	es->when = date; // user-visible date
 	es->sid  = s->uniq_id;
diff --git a/src/stream_sock.c b/src/stream_sock.c
index 0baf825bf..038e8c81a 100644
--- a/src/stream_sock.c
+++ b/src/stream_sock.c
@@ -295,7 +295,7 @@ int stream_sock_read(int fd) {
 		/*
 		 * 2. read the largest possible block
 		 */
-		ret = recv(fd, buffer_wrap_add(b, b->p + b->i), max, 0);
+		ret = recv(fd, bi_end(b), max, 0);
 
 		if (ret > 0) {
 			b->i += ret;
@@ -311,7 +311,7 @@ int stream_sock_read(int fd) {
 				}
 				b->o += fwd;
 				b->i -= fwd;
-				b->p = buffer_wrap_add(b, b->p + fwd);
+				b->p = b_ptr(b, fwd);
 				b->flags &= ~BF_OUT_EMPTY;
 			}
 
@@ -626,7 +626,7 @@ static int stream_sock_write_loop(struct stream_interface *si, struct buffer *b)
 			if (b->flags & BF_SEND_DONTWAIT)
 				send_flag &= ~MSG_MORE;
 
-			ret = send(si->fd, buffer_wrap_sub(b, b->p - b->o), max, send_flag);
+			ret = send(si->fd, bo_ptr(b), max, send_flag);
 		} else {
 			int skerr;
 			socklen_t lskerr = sizeof(skerr);
@@ -635,7 +635,7 @@ static int stream_sock_write_loop(struct stream_interface *si, struct buffer *b)
 			if (ret == -1 || skerr)
 				ret = -1;
 			else
-				ret = send(si->fd, buffer_wrap_sub(b, b->p - b->o), max, MSG_DONTWAIT);
+				ret = send(si->fd, bo_ptr(b), max, MSG_DONTWAIT);
 		}
 
 		if (ret > 0) {