mctp: Fix build with 5.15+ kernel headers

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Cc: Bruce Ashfield <bruce.ashfield@gmail.com>

meta-networking/recipes-support/mctp/mctp/0001-build-Adjust-for-kernel-mctp.h.patch

@@ -0,0 +1,84 @@
+From 653eccc918ef993186c312694c288b2a5b39248e Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Fri, 5 Nov 2021 13:14:55 -0700
+Subject: [PATCH] build: Adjust for kernel mctp.h
+
+Starting 5.15 kernel has mctp.h as well and provides some of the
+defintions, therefore move the ones we need to provide in this header
+outside the conditional check so its always provided regardless of
+header coming from kernel or not.
+
+Include linux/if_link.h so it can pre-define IFLA_MCTP_UNSPEC and other
+defines and there is a check for conditionally providing them here but
+kernel does not have such a check, so if linux/if_link.h is included
+after this header then we end up with duplicate defines
+
+linux/if_link.h:1267:2: error: redefinition of enumerator 'IFLA_MCTP_UNSPEC'
+        IFLA_MCTP_UNSPEC,
+        ^
+../git/src/mctp.h:74:2: note: previous definition is here
+        IFLA_MCTP_UNSPEC,
+        ^
+
+Upstream-Status: Submitted [https://github.com/CodeConstruct/mctp/pull/2]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ src/mctp.h | 21 +++++++++++----------
+ 1 file changed, 11 insertions(+), 10 deletions(-)
+
+diff --git a/src/mctp.h b/src/mctp.h
+index 4f73def..e602168 100644
+--- a/src/mctp.h
++++ b/src/mctp.h
+@@ -19,6 +19,7 @@
+ #if HAVE_LINUX_MCTP_H
+ #include <linux/mctp.h>
+ #endif
++#include <linux/if_link.h>
+ 
+ #ifndef AF_MCTP
+ #define AF_MCTP 45
+@@ -33,10 +34,6 @@
+ 
+ #ifndef MCTP_NET_ANY
+ 
+-#ifndef MAX_ADDR_LEN
+-#define MAX_ADDR_LEN 32
+-#endif
+-
+ typedef uint8_t			mctp_eid_t;
+ 
+ struct mctp_addr {
+@@ -53,6 +50,16 @@ struct sockaddr_mctp {
+ 	uint8_t			__smctp_pad1;
+ };
+ 
++#define MCTP_NET_ANY 0
++#define MCTP_ADDR_ANY 0xff
++#define MCTP_TAG_OWNER 0x08
++
++#endif /* MCTP_NET_ANY */
++
++#ifndef MAX_ADDR_LEN
++#define MAX_ADDR_LEN 32
++#endif
++
+ struct sockaddr_mctp_ext {
+ 	struct sockaddr_mctp	smctp_base;
+ 	int			smctp_ifindex;
+@@ -61,12 +68,6 @@ struct sockaddr_mctp_ext {
+ 	unsigned char		smctp_haddr[MAX_ADDR_LEN];
+ };
+ 
+-#define MCTP_NET_ANY 0
+-#define MCTP_ADDR_ANY 0xff
+-#define MCTP_TAG_OWNER 0x08
+-
+-#endif /* MCTP_NET_ANY */
+-
+ #ifndef IFLA_MCTP_MAX
+ 
+ /* From if_link.h */
+-- 
+2.33.1
+

meta-networking/recipes-support/mctp/mctp_git.bb

@@ -5,9 +5,13 @@ LICENSE = "GPLv2"
 
 LIC_FILES_CHKSUM = "file://LICENSE;md5=4cc91856b08b094b4f406a29dc61db21"
 
-SRCREV = "a8658290b7914f67146a982671b09f2270ba1654"
+PV = "0.1+git${SRCPV}"
 
-SRC_URI = "git://github.com/CodeConstruct/mctp;branch=main;protocol=https"
+SRCREV = "072bafe725c50329f99cf9d3b2624e8799e8163a"
+
+SRC_URI = "git://github.com/CodeConstruct/mctp;branch=main;protocol=https \
+           file://0001-build-Adjust-for-kernel-mctp.h.patch \
+          "
 
 S = "${WORKDIR}/git"