* [PATCH net-next v4 00/15] Add Management Component Transport Protocol support
@ 2021-07-29 2:20 Jeremy Kerr
2021-07-29 2:20 ` [PATCH net-next v4 01/15] mctp: Add MCTP base Jeremy Kerr
2021-07-29 14:30 ` [PATCH net-next v4 00/15] Add Management Component Transport Protocol support patchwork-bot+netdevbpf
0 siblings, 2 replies; 3+ messages in thread
From: Jeremy Kerr @ 2021-07-29 2:20 UTC (permalink / raw)
To: netdev
Cc: Matt Johnston, Andrew Jeffery, Jakub Kicinski, David S. Miller,
linux-doc, Jonathan Corbet, Paul Moore, Stephen Smalley,
Eric Paris, selinux
This series adds core MCTP support to the kernel. From the Kconfig
description:
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.
This implementation allows a sockets-based API for sending and receiving
MCTP messages via sendmsg/recvmsg on SOCK_DGRAM sockets. Kernel stack
control is all via netlink, using existing RTM_* messages. The userspace
ABI change is fairly small; just the necessary AF_/ETH_P_/ARPHDR_
constants, a new sockaddr, and a new netlink attribute.
For MAINTAINERS, I've just included netdev@ as the list entry. I'm happy
to alter this based on preferences here - an alternative would be the
OpenBMC list (the main user of the MCTP interface), or we can create a
new list entirely.
We have a couple of interface drivers almost ready to go at the moment,
but those can wait until the core code has some review.
This is v4 of the series; v1 and v2 were both RFC.
selinux folks: CCing 01/15 due to the new PF_MCTP protocol family.
linux-doc folks: CCing 15/15 for the new MCTP overview document.
Review, comments, questions etc. are most welcome.
Cheers,
Jeremy
v2:
- change to match spec terminology: controller -> component
- require specific capabilities for bind() & sendmsg()
- add address and tag defintions to uapi
- add selinux AF_MCTP table definitions
- remove strict cflags; warnings are present in common headers
v3:
- require caps for MCTP bind() & send()
- comment typo fixes
- switch to an array for local EIDs
- fix addrinfo dump iteration & error path
- add RTM_DELADDR
- remove GENMASK() and BIT() from uapi
v4:
- drop tun patch; that can be submitted separately
- keep nipa happy: add maintainer CCs, including doc and selinux
- net-next rebase
- Include AF_MCTP in af_family_slock_keys and pf_family_names
- Introduce MODULE_ definitions earlier
- upstream change: set_link_af no longer called with RTNL held
- add kdoc for net_device.mctp_ptr
- don't inline mctp_rt_match_eid
- require rtm_type == RTN_UNICAST in route management handlers
- remove unused RTAX policy table
- fix mctp_sock->keys rcu annotations
- fix spurious rcu_read_unlock in route input
Jeremy Kerr (10):
mctp: Add MCTP base
mctp: Add base socket/protocol definitions
mctp: Add base packet definitions
mctp: Add sockaddr_mctp to uapi
mctp: Add initial driver infrastructure
mctp: Add device handling and netlink interface
mctp: Add initial routing framework
mctp: Populate socket implementation
mctp: Implement message fragmentation & reassembly
mctp: Add MCTP overview document
Matt Johnston (6):
mctp: Add netlink route management
mctp: Add neighbour implementation
mctp: Add neighbour netlink interface
mctp: Add dest neighbour lladdr to route output
mctp: Allow per-netns default networks
mctp: Allow MCTP on tun devices
Documentation/networking/index.rst | 1 +
Documentation/networking/mctp.rst | 213 ++++++
MAINTAINERS | 12 +
drivers/net/Kconfig | 2 +
drivers/net/Makefile | 1 +
drivers/net/mctp/Kconfig | 8 +
drivers/net/mctp/Makefile | 0
include/linux/netdevice.h | 3 +
include/linux/socket.h | 6 +-
include/net/mctp.h | 235 ++++++
include/net/mctpdevice.h | 36 +
include/net/net_namespace.h | 4 +
include/net/netns/mctp.h | 36 +
include/uapi/linux/if_arp.h | 1 +
include/uapi/linux/if_ether.h | 3 +
include/uapi/linux/if_link.h | 10 +
include/uapi/linux/mctp.h | 36 +
net/Kconfig | 1 +
net/Makefile | 1 +
net/mctp/Kconfig | 13 +
net/mctp/Makefile | 3 +
net/mctp/af_mctp.c | 396 ++++++++++
net/mctp/device.c | 427 +++++++++++
net/mctp/neigh.c | 342 +++++++++
net/mctp/route.c | 1095 +++++++++++++++++++++++++++
security/selinux/hooks.c | 4 +-
security/selinux/include/classmap.h | 4 +-
27 files changed, 2890 insertions(+), 3 deletions(-)
create mode 100644 Documentation/networking/mctp.rst
create mode 100644 drivers/net/mctp/Kconfig
create mode 100644 drivers/net/mctp/Makefile
create mode 100644 include/net/mctp.h
create mode 100644 include/net/mctpdevice.h
create mode 100644 include/net/netns/mctp.h
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
create mode 100644 net/mctp/device.c
create mode 100644 net/mctp/neigh.c
create mode 100644 net/mctp/route.c
--
2.30.2
Jeremy Kerr (10):
mctp: Add MCTP base
mctp: Add base socket/protocol definitions
mctp: Add base packet definitions
mctp: Add sockaddr_mctp to uapi
mctp: Add initial driver infrastructure
mctp: Add device handling and netlink interface
mctp: Add initial routing framework
mctp: Populate socket implementation
mctp: Implement message fragmentation & reassembly
mctp: Add MCTP overview document
Matt Johnston (5):
mctp: Add netlink route management
mctp: Add neighbour implementation
mctp: Add neighbour netlink interface
mctp: Add dest neighbour lladdr to route output
mctp: Allow per-netns default networks
Documentation/networking/index.rst | 1 +
Documentation/networking/mctp.rst | 213 ++++++
MAINTAINERS | 12 +
drivers/net/Kconfig | 2 +
drivers/net/Makefile | 1 +
drivers/net/mctp/Kconfig | 8 +
drivers/net/mctp/Makefile | 0
include/linux/netdevice.h | 4 +
include/linux/socket.h | 6 +-
include/net/mctp.h | 231 ++++++
include/net/mctpdevice.h | 36 +
include/net/net_namespace.h | 4 +
include/net/netns/mctp.h | 36 +
include/uapi/linux/if_arp.h | 1 +
include/uapi/linux/if_ether.h | 3 +
include/uapi/linux/if_link.h | 10 +
include/uapi/linux/mctp.h | 36 +
net/Kconfig | 1 +
net/Makefile | 1 +
net/core/sock.c | 1 +
net/mctp/Kconfig | 13 +
net/mctp/Makefile | 3 +
net/mctp/af_mctp.c | 396 ++++++++++
net/mctp/device.c | 423 +++++++++++
net/mctp/neigh.c | 342 +++++++++
net/mctp/route.c | 1099 +++++++++++++++++++++++++++
net/socket.c | 1 +
security/selinux/hooks.c | 4 +-
security/selinux/include/classmap.h | 4 +-
29 files changed, 2889 insertions(+), 3 deletions(-)
create mode 100644 Documentation/networking/mctp.rst
create mode 100644 drivers/net/mctp/Kconfig
create mode 100644 drivers/net/mctp/Makefile
create mode 100644 include/net/mctp.h
create mode 100644 include/net/mctpdevice.h
create mode 100644 include/net/netns/mctp.h
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
create mode 100644 net/mctp/device.c
create mode 100644 net/mctp/neigh.c
create mode 100644 net/mctp/route.c
--
2.30.2
Jeremy Kerr (10):
mctp: Add MCTP base
mctp: Add base socket/protocol definitions
mctp: Add base packet definitions
mctp: Add sockaddr_mctp to uapi
mctp: Add initial driver infrastructure
mctp: Add device handling and netlink interface
mctp: Add initial routing framework
mctp: Populate socket implementation
mctp: Implement message fragmentation & reassembly
mctp: Add MCTP overview document
Matt Johnston (5):
mctp: Add netlink route management
mctp: Add neighbour implementation
mctp: Add neighbour netlink interface
mctp: Add dest neighbour lladdr to route output
mctp: Allow per-netns default networks
Documentation/networking/index.rst | 1 +
Documentation/networking/mctp.rst | 213 ++++++
MAINTAINERS | 12 +
drivers/net/Kconfig | 2 +
drivers/net/Makefile | 1 +
drivers/net/mctp/Kconfig | 8 +
drivers/net/mctp/Makefile | 0
include/linux/netdevice.h | 4 +
include/linux/socket.h | 6 +-
include/net/mctp.h | 231 ++++++
include/net/mctpdevice.h | 36 +
include/net/net_namespace.h | 4 +
include/net/netns/mctp.h | 36 +
include/uapi/linux/if_arp.h | 1 +
include/uapi/linux/if_ether.h | 3 +
include/uapi/linux/if_link.h | 10 +
include/uapi/linux/mctp.h | 36 +
net/Kconfig | 1 +
net/Makefile | 1 +
net/core/sock.c | 1 +
net/mctp/Kconfig | 13 +
net/mctp/Makefile | 3 +
net/mctp/af_mctp.c | 396 ++++++++++
net/mctp/device.c | 423 +++++++++++
net/mctp/neigh.c | 342 +++++++++
net/mctp/route.c | 1099 +++++++++++++++++++++++++++
net/socket.c | 1 +
security/selinux/hooks.c | 4 +-
security/selinux/include/classmap.h | 4 +-
29 files changed, 2889 insertions(+), 3 deletions(-)
create mode 100644 Documentation/networking/mctp.rst
create mode 100644 drivers/net/mctp/Kconfig
create mode 100644 drivers/net/mctp/Makefile
create mode 100644 include/net/mctp.h
create mode 100644 include/net/mctpdevice.h
create mode 100644 include/net/netns/mctp.h
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
create mode 100644 net/mctp/device.c
create mode 100644 net/mctp/neigh.c
create mode 100644 net/mctp/route.c
--
2.30.2
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH net-next v4 01/15] mctp: Add MCTP base
2021-07-29 2:20 [PATCH net-next v4 00/15] Add Management Component Transport Protocol support Jeremy Kerr
@ 2021-07-29 2:20 ` Jeremy Kerr
2021-07-29 14:30 ` [PATCH net-next v4 00/15] Add Management Component Transport Protocol support patchwork-bot+netdevbpf
1 sibling, 0 replies; 3+ messages in thread
From: Jeremy Kerr @ 2021-07-29 2:20 UTC (permalink / raw)
To: netdev
Cc: Matt Johnston, Andrew Jeffery, Jakub Kicinski, David S. Miller,
Paul Moore, Stephen Smalley, Eric Paris, selinux
Add basic Kconfig, an initial (empty) af_mctp source object, and
{AF,PF}_MCTP definitions, and the required definitions for a new
protocol type.
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
v4:
- Include AF_MCTP in af_family_slock_keys and pf_family_names
- Introduce MODULE_ definitions earlier
---
MAINTAINERS | 7 +++++++
include/linux/socket.h | 6 +++++-
include/uapi/linux/mctp.h | 15 +++++++++++++++
net/Kconfig | 1 +
net/Makefile | 1 +
net/core/sock.c | 1 +
net/mctp/Kconfig | 13 +++++++++++++
net/mctp/Makefile | 3 +++
net/mctp/af_mctp.c | 13 +++++++++++++
net/socket.c | 1 +
security/selinux/hooks.c | 4 +++-
security/selinux/include/classmap.h | 4 +++-
12 files changed, 66 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 4c32a9c532b7..22a1ff9afd9d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -11032,6 +11032,13 @@ 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-$(CONFIG_MCTP) += mctp/
diff --git a/net/core/sock.c b/net/core/sock.c
index a3eea6e0b30a..9671c32e6ef5 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -226,6 +226,7 @@ static struct lock_class_key af_family_kern_slock_keys[AF_MAX];
x "AF_IEEE802154", x "AF_CAIF" , x "AF_ALG" , \
x "AF_NFC" , x "AF_VSOCK" , x "AF_KCM" , \
x "AF_QIPCRTR", x "AF_SMC" , x "AF_XDP" , \
+ x "AF_MCTP" , \
x "AF_MAX"
static const char *const af_family_key_strings[AF_MAX+1] = {
diff --git a/net/mctp/Kconfig b/net/mctp/Kconfig
new file mode 100644
index 000000000000..2cdf3d0a28c9
--- /dev/null
+++ b/net/mctp/Kconfig
@@ -0,0 +1,13 @@
+
+menuconfig MCTP
+ depends on NET
+ tristate "MCTP core protocol support"
+ help
+ Management Component Transport Protocol (MCTP) is an in-system
+ protocol for communicating between management controllers and
+ their managed devices (peripherals, host processors, etc.). The
+ protocol is defined by DMTF specification DSP0236.
+
+ This option enables core MCTP support. For communicating with other
+ devices, you'll want to enable a driver for a specific hardware
+ channel.
diff --git a/net/mctp/Makefile b/net/mctp/Makefile
new file mode 100644
index 000000000000..7c056b1b7939
--- /dev/null
+++ b/net/mctp/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+obj-$(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..8f9c77e97357
--- /dev/null
+++ b/net/mctp/af_mctp.c
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Management Component Transport Protocol (MCTP)
+ *
+ * Copyright (c) 2021 Code Construct
+ * Copyright (c) 2021 Google
+ */
+
+#include <linux/module.h>
+
+MODULE_DESCRIPTION("MCTP core");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Jeremy Kerr <jk@codeconstruct.com.au>");
diff --git a/net/socket.c b/net/socket.c
index 42665bd99ea4..3c10504e46d9 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -212,6 +212,7 @@ static const char * const pf_family_names[] = {
[PF_QIPCRTR] = "PF_QIPCRTR",
[PF_SMC] = "PF_SMC",
[PF_XDP] = "PF_XDP",
+ [PF_MCTP] = "PF_MCTP",
};
/*
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
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH net-next v4 00/15] Add Management Component Transport Protocol support
2021-07-29 2:20 [PATCH net-next v4 00/15] Add Management Component Transport Protocol support Jeremy Kerr
2021-07-29 2:20 ` [PATCH net-next v4 01/15] mctp: Add MCTP base Jeremy Kerr
@ 2021-07-29 14:30 ` patchwork-bot+netdevbpf
1 sibling, 0 replies; 3+ messages in thread
From: patchwork-bot+netdevbpf @ 2021-07-29 14:30 UTC (permalink / raw)
To: Jeremy Kerr
Cc: netdev, matt, andrew, kuba, davem, linux-doc, corbet, paul,
stephen.smalley.work, eparis, selinux
Hello:
This series was applied to netdev/net-next.git (refs/heads/master):
On Thu, 29 Jul 2021 10:20:38 +0800 you wrote:
> This series adds core MCTP support to the kernel. From the Kconfig
> description:
>
> 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.
>
> [...]
Here is the summary with links:
- [net-next,v4,01/15] mctp: Add MCTP base
https://git.kernel.org/netdev/net-next/c/bc49d8169aa7
- [net-next,v4,02/15] mctp: Add base socket/protocol definitions
https://git.kernel.org/netdev/net-next/c/8f601a1e4f8c
- [net-next,v4,03/15] mctp: Add base packet definitions
https://git.kernel.org/netdev/net-next/c/2c8e2e9aec79
- [net-next,v4,04/15] mctp: Add sockaddr_mctp to uapi
https://git.kernel.org/netdev/net-next/c/60fc63981693
- [net-next,v4,05/15] mctp: Add initial driver infrastructure
https://git.kernel.org/netdev/net-next/c/4b2e69305cbb
- [net-next,v4,06/15] mctp: Add device handling and netlink interface
https://git.kernel.org/netdev/net-next/c/583be982d934
- [net-next,v4,07/15] mctp: Add initial routing framework
https://git.kernel.org/netdev/net-next/c/889b7da23abf
- [net-next,v4,08/15] mctp: Add netlink route management
https://git.kernel.org/netdev/net-next/c/06d2f4c583a7
- [net-next,v4,09/15] mctp: Add neighbour implementation
https://git.kernel.org/netdev/net-next/c/4d8b9319282a
- [net-next,v4,10/15] mctp: Add neighbour netlink interface
https://git.kernel.org/netdev/net-next/c/831119f88781
- [net-next,v4,11/15] mctp: Populate socket implementation
https://git.kernel.org/netdev/net-next/c/833ef3b91de6
- [net-next,v4,12/15] mctp: Implement message fragmentation & reassembly
https://git.kernel.org/netdev/net-next/c/4a992bbd3650
- [net-next,v4,13/15] mctp: Add dest neighbour lladdr to route output
https://git.kernel.org/netdev/net-next/c/26ab3fcaf235
- [net-next,v4,14/15] mctp: Allow per-netns default networks
https://git.kernel.org/netdev/net-next/c/03f2bbc4ee57
- [net-next,v4,15/15] mctp: Add MCTP overview document
https://git.kernel.org/netdev/net-next/c/6a2d98b18900
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html
^ permalink raw reply [flat|nested] 3+ messages in thread
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