[RFC net-next 01/15] net: Reserve protocol numbers for LoRa

Andreas Färber
2018-07-01T11:07:50Z

LoRa is a long-range, low-power wireless network technology by Semtech.
It serves as base for LoRaWAN as well as multiple proprietary protocols.

AF_LORA
PF_LORA
ARPHRD_LORA
ETH_P_LORA

Signed-off-by: Andreas Färber <afaerber@suse.de>
---
include/linux/socket.h | 4 +++-
include/uapi/linux/if_arp.h | 1 +
include/uapi/linux/if_ether.h | 1 +
security/selinux/hooks.c | 4 +++-
security/selinux/include/classmap.h | 4 +++-
5 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/include/linux/socket.h b/include/linux/socket.h
index 7ed4713d5337..aa1e288b1659 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -208,8 +208,9 @@ struct ucred {
* reuses AF_INET address family
*/
#define AF_XDP 44 /* XDP sockets */
+#define AF_LORA 45 /* LoRa sockets */

-#define AF_MAX 45 /* For now.. */
+#define AF_MAX 46 /* For now.. */

/* Protocol families, same as address families. */
#define PF_UNSPEC AF_UNSPEC
@@ -259,6 +260,7 @@ struct ucred {
#define PF_QIPCRTR AF_QIPCRTR
#define PF_SMC AF_SMC
#define PF_XDP AF_XDP
+#define PF_LORA AF_LORA
#define PF_MAX AF_MAX

/* Maximum queue length specifiable by listen. */
diff --git a/include/uapi/linux/if_arp.h b/include/uapi/linux/if_arp.h
index 4605527ca41b..1ed7cb3f2129 100644
--- a/include/uapi/linux/if_arp.h
+++ b/include/uapi/linux/if_arp.h
@@ -98,6 +98,7 @@
#define ARPHRD_NETLINK 824 /* Netlink header */
#define ARPHRD_6LOWPAN 825 /* IPv6 over LoWPAN */
#define ARPHRD_VSOCKMON 826 /* Vsock monitor header */
+#define ARPHRD_LORA 827 /* LoRa */

#define ARPHRD_VOID 0xFFFF /* Void type, nothing is known */
#define ARPHRD_NONE 0xFFFE /* zero header length */
diff --git a/include/uapi/linux/if_ether.h b/include/uapi/linux/if_ether.h
index 3a45b4ad71a3..45644dcf5b39 100644
--- a/include/uapi/linux/if_ether.h
+++ b/include/uapi/linux/if_ether.h
@@ -147,6 +147,7 @@
#define ETH_P_MAP 0x00F9 /* Qualcomm multiplexing and
* aggregation protocol
*/
+#define ETH_P_LORA 0x00FA /* LoRa */

/*
* This is an Ethernet frame header.
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 10a5d2ce3870..b62bb0389d70 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -1473,7 +1473,9 @@ static inline u16 socket_type_to_security_class(int family, int type, int protoc
return SECCLASS_SMC_SOCKET;
case PF_XDP:
return SECCLASS_XDP_SOCKET;
-#if PF_MAX > 45
+ case PF_LORA:
+ return SECCLASS_LORA_SOCKET;
+#if PF_MAX > 46
#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 bd5fe0d3204a..060d4bf8385e 100644
--- a/security/selinux/include/classmap.h
+++ b/security/selinux/include/classmap.h
@@ -242,9 +242,11 @@ struct security_class_mapping secclass_map[] = {
{"map_create", "map_read", "map_write", "prog_load", "prog_run"} },
{ "xdp_socket",
{ COMMON_SOCK_PERMS, NULL } },
+ { "lora_socket",
+ { COMMON_SOCK_PERMS, NULL } },
{ NULL }
};

-#if PF_MAX > 45
+#if PF_MAX > 46
#error New address family defined, please update secclass_map.
#endif
--
2.16.4

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