From: Tobias Klauser <tklauser@distanz.ch>
Date: Tue, 28 Nov 2023 11:06:43 +0000 (+0100)
Subject: Add TCP_MD5SIG_FLAG_IFINDEX from Linux 5.6 to netinet/tcp.h.
X-Git-Tag: glibc-2.39~240
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=06bbe63e367abd5f7b225cbae30d1e487f237c85;p=thirdparty%2Fglibc.git

Add TCP_MD5SIG_FLAG_IFINDEX from Linux 5.6 to netinet/tcp.h.

This patch adds the TCP_MD5SIG_FLAG_IFINDEX constant from Linux 5.6 to
sysdeps/gnu/netinet/tcp.h and updates struct tcp_md5sig accordingly to
contain the device index.

Reviewed-by: Florian Weimer <fweimer@redhat.com>
---

diff --git a/sysdeps/gnu/netinet/tcp.h b/sysdeps/gnu/netinet/tcp.h
index 17937246428..b2acbb43508 100644
--- a/sysdeps/gnu/netinet/tcp.h
+++ b/sysdeps/gnu/netinet/tcp.h
@@ -272,6 +272,7 @@ struct tcp_info
 
 /* tcp_md5sig extension flags for TCP_MD5SIG_EXT.  */
 #define TCP_MD5SIG_FLAG_PREFIX	1 /* Address prefix length.  */
+#define TCP_MD5SIG_FLAG_IFINDEX	2 /* Ifindex set.  */
 
 struct tcp_md5sig
 {
@@ -279,7 +280,7 @@ struct tcp_md5sig
   uint8_t	tcpm_flags;			/* Extension flags.  */
   uint8_t	tcpm_prefixlen;			/* Address prefix.  */
   uint16_t	tcpm_keylen;			/* Key length.  */
-  uint32_t	__tcpm_pad;			/* Zero.  */
+  int		tcpm_ifindex;			/* Device index for scope.  */
   uint8_t	tcpm_key[TCP_MD5SIG_MAXKEYLEN];	/* Key (binary).  */
 };