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

Chuck Lever
2022-04-18T16:49:52Z

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. */