[PATCH RFC 3/5] net/tls: Add an AF_TLSH address family

From: Chuck Lever <chuck.lever@oracle.com>
To: netdev@vger.kernel.org, linux-nfs@vger.kernel.org,
	linux-nvme@lists.infradead.org, linux-cifs@vger.kernel.org,
	linux-fsdevel@vger.kernel.org
Cc: ak@tempesta-tech.com, borisp@nvidia.com, simo@redhat.com
Subject: [PATCH RFC 3/5] net/tls: Add an AF_TLSH address family
Date: Mon, 18 Apr 2022 12:49:43 -0400	[thread overview]
Message-ID: <165030058340.5073.5461321687798728373.stgit@oracle-102.nfsv4.dev> (raw)
In-Reply-To: <165030051838.5073.8699008789153780301.stgit@oracle-102.nfsv4.dev>

Add definitions for an AF_TLSH address family. The next patch
explains its purpose and operation.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
 include/linux/socket.h                         |    4 +++-
 net/core/sock.c                                |    2 +-
 net/socket.c                                   |    1 +
 security/selinux/hooks.c                       |    4 +++-
 security/selinux/include/classmap.h            |    4 +++-
 tools/perf/trace/beauty/include/linux/socket.h |    4 +++-
 6 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/include/linux/socket.h b/include/linux/socket.h
index 6f85f5d957ef..fc28c68e6b5f 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -226,8 +226,9 @@ struct ucred {
 #define AF_MCTP		45	/* Management component
 				 * transport protocol
 				 */
+#define AF_TLSH		46	/* TLS handshake request */
 
-#define AF_MAX		46	/* For now.. */
+#define AF_MAX		47	/* For now.. */
 
 /* Protocol families, same as address families. */
 #define PF_UNSPEC	AF_UNSPEC
@@ -278,6 +279,7 @@ struct ucred {
 #define PF_SMC		AF_SMC
 #define PF_XDP		AF_XDP
 #define PF_MCTP		AF_MCTP
+#define PF_TLSH		AF_TLSH
 #define PF_MAX		AF_MAX
 
 /* Maximum queue length specifiable by listen.  */
diff --git a/net/core/sock.c b/net/core/sock.c
index 1180a0cb0110..81bc14b67468 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -224,7 +224,7 @@ static struct lock_class_key af_family_kern_slock_keys[AF_MAX];
   x "AF_IEEE802154",	x "AF_CAIF"	,	x "AF_ALG"      , \
   x "AF_NFC"   ,	x "AF_VSOCK"    ,	x "AF_KCM"      , \
   x "AF_QIPCRTR",	x "AF_SMC"	,	x "AF_XDP"	, \
-  x "AF_MCTP"  , \
+  x "AF_MCTP"  ,	x "AF_TLSH"	, \
   x "AF_MAX"
 
 static const char *const af_family_key_strings[AF_MAX+1] = {
diff --git a/net/socket.c b/net/socket.c
index 6887840682bb..fc43ebd5ad66 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -214,6 +214,7 @@ static const char * const pf_family_names[] = {
 	[PF_SMC]	= "PF_SMC",
 	[PF_XDP]	= "PF_XDP",
 	[PF_MCTP]	= "PF_MCTP",
+	[PF_TLSH]	= "PF_TLSH",
 };
 
 /*
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index e9e959343de9..734e284eb06a 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -1259,7 +1259,9 @@ static inline u16 socket_type_to_security_class(int family, int type, int protoc
 			return SECCLASS_XDP_SOCKET;
 		case PF_MCTP:
 			return SECCLASS_MCTP_SOCKET;
-#if PF_MAX > 46
+		case PF_TLSH:
+			return SECCLASS_TLSH_SOCKET;
+#if PF_MAX > 47
 #error New address family defined, please update this function.
 #endif
 		}
diff --git a/security/selinux/include/classmap.h b/security/selinux/include/classmap.h
index 35aac62a662e..673b51f8281d 100644
--- a/security/selinux/include/classmap.h
+++ b/security/selinux/include/classmap.h
@@ -237,6 +237,8 @@ struct security_class_mapping secclass_map[] = {
 	  { COMMON_SOCK_PERMS, NULL } },
 	{ "smc_socket",
 	  { COMMON_SOCK_PERMS, NULL } },
+	{ "tlsh_socket",
+	  { COMMON_SOCK_PERMS, NULL } },
 	{ "infiniband_pkey",
 	  { "access", NULL } },
 	{ "infiniband_endport",
@@ -257,6 +259,6 @@ struct security_class_mapping secclass_map[] = {
 	{ NULL }
   };
 
-#if PF_MAX > 46
+#if PF_MAX > 47
 #error New address family defined, please update secclass_map.
 #endif
diff --git a/tools/perf/trace/beauty/include/linux/socket.h b/tools/perf/trace/beauty/include/linux/socket.h
index 6f85f5d957ef..fc28c68e6b5f 100644
--- a/tools/perf/trace/beauty/include/linux/socket.h
+++ b/tools/perf/trace/beauty/include/linux/socket.h
@@ -226,8 +226,9 @@ struct ucred {
 #define AF_MCTP		45	/* Management component
 				 * transport protocol
 				 */
+#define AF_TLSH		46	/* TLS handshake request */
 
-#define AF_MAX		46	/* For now.. */
+#define AF_MAX		47	/* For now.. */
 
 /* Protocol families, same as address families. */
 #define PF_UNSPEC	AF_UNSPEC
@@ -278,6 +279,7 @@ struct ucred {
 #define PF_SMC		AF_SMC
 #define PF_XDP		AF_XDP
 #define PF_MCTP		AF_MCTP
+#define PF_TLSH		AF_TLSH
 #define PF_MAX		AF_MAX
 
 /* Maximum queue length specifiable by listen.  */


