From 8e0bb0ae16599f89be3f0937c00976ef28ec7f25 Mon Sep 17 00:00:00 2001
From: Willy Tarreau <w@1wt.eu>
Date: Thu, 24 Nov 2016 16:58:12 +0100
Subject: [PATCH] MINOR: connection: add names for transport and data layers

This makes debugging easier and avoids having to put ugly checks
against certain well-known internal struct pointers.
---
 include/proto/connection.h | 33 ++-------------------------------
 include/types/connection.h |  2 ++
 src/checks.c               |  1 +
 src/raw_sock.c             |  1 +
 src/session.c              |  1 +
 src/ssl_sock.c             |  1 +
 src/stream_interface.c     |  2 ++
 7 files changed, 10 insertions(+), 31 deletions(-)

diff --git a/include/proto/connection.h b/include/proto/connection.h
index 0724512c3..fce602599 100644
--- a/include/proto/connection.h
+++ b/include/proto/connection.h
@@ -607,45 +607,16 @@ static inline const char *conn_get_ctrl_name(const struct connection *conn)
 
 static inline const char *conn_get_xprt_name(const struct connection *conn)
 {
-	static char ptr[19]; /* 0x... */
-	extern struct xprt_ops raw_sock; // should theorically not be exported
-	extern struct xprt_ops ssl_sock; // should theorically not be exported
-
 	if (!conn_xprt_ready(conn))
 		return "NONE";
-
-	if (conn->xprt == &raw_sock)
-		return "RAW";
-
-#ifdef USE_OPENSSL
-	if (conn->xprt == &ssl_sock)
-		return "SSL";
-#endif
-	snprintf(ptr, sizeof(ptr), "%p", conn->xprt);
-	return ptr;
+	return conn->xprt->name;
 }
 
 static inline const char *conn_get_data_name(const struct connection *conn)
 {
-	static char ptr[19]; /* 0x... */
-	extern struct data_cb sess_conn_cb;  // should theorically not be exported
-	extern struct data_cb si_conn_cb;    // should theorically not be exported
-	extern struct data_cb check_conn_cb; // should theorically not be exported
-
 	if (!conn->data)
 		return "NONE";
-
-	if (conn->data == &sess_conn_cb)
-		return "SESS";
-
-	if (conn->data == &si_conn_cb)
-		return "STRM";
-
-	if (conn->data == &check_conn_cb)
-		return "CHCK";
-
-	snprintf(ptr, sizeof(ptr), "%p", conn->data);
-	return ptr;
+	return conn->data->name;
 }
 
 
diff --git a/include/types/connection.h b/include/types/connection.h
index 11eff490c..8b732ff75 100644
--- a/include/types/connection.h
+++ b/include/types/connection.h
@@ -213,6 +213,7 @@ struct xprt_ops {
 	void (*shutw)(struct connection *, int);    /* shutw function */
 	void (*close)(struct connection *);         /* close the transport layer */
 	int  (*init)(struct connection *conn);      /* initialize the transport layer */
+	char name[8];                               /* transport layer name, zero-terminated */
 };
 
 /* data_cb describes the data layer's recv and send callbacks which are called
@@ -230,6 +231,7 @@ struct data_cb {
 	void (*send)(struct connection *conn);  /* data-layer send callback */
 	int  (*wake)(struct connection *conn);  /* data-layer callback to report activity */
 	int  (*init)(struct connection *conn);  /* data-layer initialization */
+	char name[8];                           /* data layer name, zero-terminated */
 };
 
 struct my_tcphdr {
diff --git a/src/checks.c b/src/checks.c
index 84a0f583c..a9b89d090 100644
--- a/src/checks.c
+++ b/src/checks.c
@@ -1414,6 +1414,7 @@ struct data_cb check_conn_cb = {
 	.recv = event_srv_chk_r,
 	.send = event_srv_chk_w,
 	.wake = wake_srv_chk,
+	.name = "CHCK",
 };
 
 /*
diff --git a/src/raw_sock.c b/src/raw_sock.c
index c093377cf..0883c57a6 100644
--- a/src/raw_sock.c
+++ b/src/raw_sock.c
@@ -416,6 +416,7 @@ struct xprt_ops raw_sock = {
 	.shutr    = NULL,
 	.shutw    = NULL,
 	.close    = NULL,
+	.name     = "RAW",
 };
 
 /*
diff --git a/src/session.c b/src/session.c
index cdf57e388..93fdf5248 100644
--- a/src/session.c
+++ b/src/session.c
@@ -41,6 +41,7 @@ struct data_cb sess_conn_cb = {
 	.send = NULL,
 	.wake = conn_update_session,
 	.init = conn_complete_session,
+	.name = "SESS",
 };
 
 /* Create a a new session and assign it to frontend <fe>, listener <li>,
diff --git a/src/ssl_sock.c b/src/ssl_sock.c
index ef03525fc..c0e4d75fc 100644
--- a/src/ssl_sock.c
+++ b/src/ssl_sock.c
@@ -6127,6 +6127,7 @@ struct xprt_ops ssl_sock = {
 	.shutw    = ssl_sock_shutw,
 	.close    = ssl_sock_close,
 	.init     = ssl_sock_init,
+	.name     = "SSL",
 };
 
 #if (OPENSSL_VERSION_NUMBER >= 0x1000200fL && !defined OPENSSL_NO_TLSEXT && !defined OPENSSL_IS_BORINGSSL && !defined LIBRESSL_VERSION_NUMBER)
diff --git a/src/stream_interface.c b/src/stream_interface.c
index d39d7647e..4f93a2e2a 100644
--- a/src/stream_interface.c
+++ b/src/stream_interface.c
@@ -86,12 +86,14 @@ struct data_cb si_conn_cb = {
 	.recv    = si_conn_recv_cb,
 	.send    = si_conn_send_cb,
 	.wake    = si_conn_wake_cb,
+	.name    = "STRM",
 };
 
 struct data_cb si_idle_conn_cb = {
 	.recv    = si_idle_conn_null_cb,
 	.send    = si_idle_conn_null_cb,
 	.wake    = si_idle_conn_wake_cb,
+	.name    = "IDLE",
 };
 
 /*