[PATCH net-next v3 01/16] mctp: Add MCTP base
flat view
STALE1855d
SUPERSEDED
From: Jeremy Kerr <jk@codeconstruct.com.au>
Date: 2021-07-23 08:29:50
Subsystem:
management component transport protocol (mctp), networking [general], networking [sockets], selinux security module, the rest · Maintainers:
Jeremy Kerr, Matt Johnston, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Kuniyuki Iwashima, Willem de Bruijn, Paul Moore, Stephen Smalley, Linus Torvalds
Status: Superseded by v4 (posted 2021-07-29). [go to v4]
Revision v3 (3 revisions archived).
Revisions (3)
- v2
- v3 current [diff against previous]
- v4 [diff against previous]
Add basic Kconfig, an initial (empty) af_mctp source object, and
{AF,PF}_MCTP definitions, and the required selinux definitions.
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
---
v2:
- Add Linux-syscall-note to uapi header
- Add selinux defs for new AF_MCTP
- Controller -> component
- Don't use strict cflags; warnings are present in #includes
---
MAINTAINERS | 7 +++++++
include/linux/socket.h | 6 +++++-
include/uapi/linux/mctp.h | 15 +++++++++++++++
net/Kconfig | 1 +
net/Makefile | 1 +
net/mctp/Kconfig | 13 +++++++++++++
net/mctp/Makefile | 3 +++
net/mctp/af_mctp.c | 7 +++++++
security/selinux/hooks.c | 4 +++-
security/selinux/include/classmap.h | 4 +++-
10 files changed, 58 insertions(+), 3 deletions(-)
create mode 100644 include/uapi/linux/mctp.h
create mode 100644 net/mctp/Kconfig
create mode 100644 net/mctp/Makefile
create mode 100644 net/mctp/af_mctp.c
diff --git a/MAINTAINERS b/MAINTAINERS
index da478d5c8b0c..aa2a51ff3aa4 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS@@ -11030,6 +11030,13 @@ F: drivers/mailbox/arm_mhuv2.c F: include/linux/mailbox/arm_mhuv2_message.h F: Documentation/devicetree/bindings/mailbox/arm,mhuv2.yaml +MANAGEMENT COMPONENT TRANSPORT PROTOCOL (MCTP) +M: Jeremy Kerr <jk@codeconstruct.com.au> +M: Matt Johnston <matt@codeconstruct.com.au> +L: netdev@vger.kernel.org +S: Maintained +F: net/mctp/ + MAN-PAGES: MANUAL PAGES FOR LINUX -- Sections 2, 3, 4, 5, and 7 M: Michael Kerrisk <mtk.manpages@gmail.com> L: linux-man@vger.kernel.org
diff --git a/include/linux/socket.h b/include/linux/socket.h
index 0d8e3dcb7f88..fd9ce51582d8 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h@@ -223,8 +223,11 @@ struct ucred { * reuses AF_INET address family */ #define AF_XDP 44 /* XDP sockets */ +#define AF_MCTP 45 /* Management component + * transport protocol + */ -#define AF_MAX 45 /* For now.. */ +#define AF_MAX 46 /* For now.. */ /* Protocol families, same as address families. */ #define PF_UNSPEC AF_UNSPEC
@@ -274,6 +277,7 @@ struct ucred { #define PF_QIPCRTR AF_QIPCRTR #define PF_SMC AF_SMC #define PF_XDP AF_XDP +#define PF_MCTP AF_MCTP #define PF_MAX AF_MAX /* Maximum queue length specifiable by listen. */
diff --git a/include/uapi/linux/mctp.h b/include/uapi/linux/mctp.h
new file mode 100644
index 000000000000..2640a589c14c
--- /dev/null
+++ b/include/uapi/linux/mctp.h@@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* + * Management Component Transport Protocol (MCTP) + * + * Copyright (c) 2021 Code Construct + * Copyright (c) 2021 Google + */ + +#ifndef __UAPI_MCTP_H +#define __UAPI_MCTP_H + +struct sockaddr_mctp { +}; + +#endif /* __UAPI_MCTP_H */
diff --git a/net/Kconfig b/net/Kconfig
index c7392c449b25..fb13460c6dab 100644
--- a/net/Kconfig
+++ b/net/Kconfig@@ -363,6 +363,7 @@ source "net/bluetooth/Kconfig" source "net/rxrpc/Kconfig" source "net/kcm/Kconfig" source "net/strparser/Kconfig" +source "net/mctp/Kconfig" config FIB_RULES bool
diff --git a/net/Makefile b/net/Makefile
index 9ca9572188fe..fbfeb8a0bb37 100644
--- a/net/Makefile
+++ b/net/Makefile@@ -78,3 +78,4 @@ obj-$(CONFIG_QRTR) += qrtr/ obj-$(CONFIG_NET_NCSI) += ncsi/ obj-$(CONFIG_XDP_SOCKETS) += xdp/ obj-$(CONFIG_MPTCP) += mptcp/ +obj-$(CONFIG_MCTP) += mctp/
diff --git a/net/mctp/Kconfig b/net/mctp/Kconfig
new file mode 100644
index 000000000000..2cdf3d0a28c9
--- /dev/null
+++ b/net/mctp/Kconfig@@ -0,0 +1,13 @@ + +menuconfig MCTP + depends on NET + tristate "MCTP core protocol support" + help + Management Component Transport Protocol (MCTP) is an in-system + protocol for communicating between management controllers and + their managed devices (peripherals, host processors, etc.). The + protocol is defined by DMTF specification DSP0236. + + This option enables core MCTP support. For communicating with other + devices, you'll want to enable a driver for a specific hardware + channel.
diff --git a/net/mctp/Makefile b/net/mctp/Makefile
new file mode 100644
index 000000000000..7c056b1b7939
--- /dev/null
+++ b/net/mctp/Makefile@@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0 +obj-$(CONFIG_MCTP) += mctp.o +mctp-objs := af_mctp.o
diff --git a/net/mctp/af_mctp.c b/net/mctp/af_mctp.c
new file mode 100644
index 000000000000..1b63b753057b
--- /dev/null
+++ b/net/mctp/af_mctp.c@@ -0,0 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Management Component Transport Protocol (MCTP) + * + * Copyright (c) 2021 Code Construct + * Copyright (c) 2021 Google + */
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index b0032c42333e..2143f590e3d6 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c@@ -1330,7 +1330,9 @@ 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_MCTP: + return SECCLASS_MCTP_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 62d19bccf3de..084757ff4390 100644
--- a/security/selinux/include/classmap.h
+++ b/security/selinux/include/classmap.h@@ -246,6 +246,8 @@ struct security_class_mapping secclass_map[] = { NULL } }, { "xdp_socket", { COMMON_SOCK_PERMS, NULL } }, + { "mctp_socket", + { COMMON_SOCK_PERMS, NULL } }, { "perf_event", { "open", "cpu", "kernel", "tracepoint", "read", "write", NULL } }, { "lockdown",
@@ -255,6 +257,6 @@ struct security_class_mapping secclass_map[] = { { NULL } }; -#if PF_MAX > 45 +#if PF_MAX > 46 #error New address family defined, please update secclass_map. #endif
--
2.30.2