kernel: remove support for kernel 4.19

We use 5.4 on all targets by default, and 4.19 has never been released
in a stable version. There is no reason to keep it.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

1 files changed, 0 insertions, 79 deletions

diff --git a/target/linux/generic/backport-4.19/095-Allow-class-e-address-assignment-via-ifconfig-ioctl.patch b/target/linux/generic/backport-4.19/095-Allow-class-e-address-assignment-via-ifconfig-ioctl.patch
deleted file mode 100644
index e473c8918b..0000000000
--- a/target/linux/generic/backport-4.19/095-Allow-class-e-address-assignment-via-ifconfig-ioctl.patch
+++ /dev/null
@@ -1,79 +0,0 @@
-From 46bf067870156abd61fe24d14c2486d15b8b502c Mon Sep 17 00:00:00 2001
-From: Dave Taht <dave@taht.net>
-Date: Fri, 14 Dec 2018 18:38:40 +0000
-Subject: [PATCH 1/1] Allow class-e address assignment in ifconfig and early
- boot
-
-While the linux kernel became mostly "class-e clean" a decade ago,
-and most distributions long ago switched to the iproute2 suite
-of utilities, which allow class-e (240.0.0.0/4) address assignment,
-distributions relying on busybox, toybox and other forms of
-ifconfig cannot assign class-e addresses without this kernel patch.
-
-With this patch, also, a boot command line on these addresses is feasible:
-(ip=248.0.1.2::248.0.1.1:255.255.255.0).
-
-While CIDR has been obsolete for 2 decades, and a survey of all the
-userspace open source code in the world shows most IN_whatever macros
-are also obsolete... rather than obsolete CIDR from this ioctl entirely,
-this patch merely enables class-e assignment, sanely.
-
-H/T to Vince Fuller and his original patch here:
-    https://lkml.org/lkml/2008/1/7/370
-
-Signed-off-by: Dave Taht <dave.taht@gmail.com>
-Reviewed-by: John Gilmore <gnu@toad.com>
----
- include/uapi/linux/in.h | 8 ++++++--
- net/ipv4/devinet.c      | 4 +++-
- net/ipv4/ipconfig.c     | 2 ++
- 3 files changed, 11 insertions(+), 3 deletions(-)
-
---- a/include/uapi/linux/in.h
-+++ b/include/uapi/linux/in.h
-@@ -268,8 +268,12 @@ struct sockaddr_in {
- #define	IN_MULTICAST(a)		IN_CLASSD(a)
- #define IN_MULTICAST_NET	0xF0000000
- 
--#define	IN_EXPERIMENTAL(a)	((((long int) (a)) & 0xf0000000) == 0xf0000000)
--#define	IN_BADCLASS(a)		IN_EXPERIMENTAL((a))
-+#define	IN_BADCLASS(a)		(((long int) (a) ) == (long int)0xffffffff)
-+#define	IN_EXPERIMENTAL(a)	IN_BADCLASS((a))
-+
-+#define	IN_CLASSE(a)		((((long int) (a)) & 0xf0000000) == 0xf0000000)
-+#define	IN_CLASSE_NET		0xffffffff
-+#define	IN_CLASSE_NSHIFT	0
- 
- /* Address to accept any incoming messages. */
- #define	INADDR_ANY		((unsigned long int) 0x00000000)
---- a/net/ipv4/devinet.c
-+++ b/net/ipv4/devinet.c
-@@ -955,7 +955,7 @@ static int inet_abc_len(__be32 addr)
- {
- 	int rc = -1;	/* Something else, probably a multicast. */
- 
--	if (ipv4_is_zeronet(addr))
-+	if (ipv4_is_zeronet(addr) || ipv4_is_lbcast(addr))
- 		rc = 0;
- 	else {
- 		__u32 haddr = ntohl(addr);
-@@ -966,6 +966,8 @@ static int inet_abc_len(__be32 addr)
- 			rc = 16;
- 		else if (IN_CLASSC(haddr))
- 			rc = 24;
-+		else if (IN_CLASSE(haddr))
-+			rc = 32;
- 	}
- 
- 	return rc;
---- a/net/ipv4/ipconfig.c
-+++ b/net/ipv4/ipconfig.c
-@@ -429,6 +429,8 @@ static int __init ic_defaults(void)
- 			ic_netmask = htonl(IN_CLASSB_NET);
- 		else if (IN_CLASSC(ntohl(ic_myaddr)))
- 			ic_netmask = htonl(IN_CLASSC_NET);
-+		else if (IN_CLASSE(ntohl(ic_myaddr)))
-+			ic_netmask = htonl(IN_CLASSE_NET);
- 		else {
- 			pr_err("IP-Config: Unable to guess netmask for address %pI4\n",
- 			       &ic_myaddr);