From c16517d26de30c90dabce1e456615fd7fbdce07c Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sun, 23 Feb 2020 13:20:11 +0100 Subject: kernel: copy kernel 4.19 code to 5.4 No changes were done to the patches while coping them. Currently they do not apply on top of kernel 5.4. Signed-off-by: Hauke Mehrtens --- .../generic/hack-5.4/901-debloat_sock_diag.patch | 136 +++++++++++++++++++++ 1 file changed, 136 insertions(+) create mode 100644 target/linux/generic/hack-5.4/901-debloat_sock_diag.patch (limited to 'target/linux/generic/hack-5.4/901-debloat_sock_diag.patch') diff --git a/target/linux/generic/hack-5.4/901-debloat_sock_diag.patch b/target/linux/generic/hack-5.4/901-debloat_sock_diag.patch new file mode 100644 index 0000000000..639f76d309 --- /dev/null +++ b/target/linux/generic/hack-5.4/901-debloat_sock_diag.patch @@ -0,0 +1,136 @@ +From 3b6115d6b57a263bdc8c9b1df273bd4a7955eead Mon Sep 17 00:00:00 2001 +From: Felix Fietkau +Date: Sat, 8 Jul 2017 08:16:31 +0200 +Subject: debloat: add some debloat patches, strip down procfs and make O_DIRECT support optional, saves ~15K after lzma on MIPS + +Signed-off-by: Felix Fietkau +--- + net/Kconfig | 3 +++ + net/core/Makefile | 3 ++- + net/core/sock.c | 2 ++ + net/ipv4/Kconfig | 1 + + net/netlink/Kconfig | 1 + + net/packet/Kconfig | 1 + + net/unix/Kconfig | 1 + + 7 files changed, 11 insertions(+), 1 deletion(-) + +--- a/net/Kconfig ++++ b/net/Kconfig +@@ -98,6 +98,9 @@ source "net/netlabel/Kconfig" + + endif # if INET + ++config SOCK_DIAG ++ bool ++ + config NETWORK_SECMARK + bool "Security Marking" + help +--- a/net/core/Makefile ++++ b/net/core/Makefile +@@ -10,9 +10,10 @@ obj-$(CONFIG_SYSCTL) += sysctl_net_core. + + obj-y += dev.o ethtool.o dev_addr_lists.o dst.o netevent.o \ + neighbour.o rtnetlink.o utils.o link_watch.o filter.o \ +- sock_diag.o dev_ioctl.o tso.o sock_reuseport.o \ ++ dev_ioctl.o tso.o sock_reuseport.o \ + fib_notifier.o xdp.o + ++obj-$(CONFIG_SOCK_DIAG) += sock_diag.o + obj-y += net-sysfs.o + obj-$(CONFIG_PAGE_POOL) += page_pool.o + obj-$(CONFIG_PROC_FS) += net-procfs.o +--- a/net/core/sock.c ++++ b/net/core/sock.c +@@ -490,6 +490,18 @@ discard_and_relse: + } + EXPORT_SYMBOL(__sk_receive_skb); + ++u64 sock_gen_cookie(struct sock *sk) ++{ ++ while (1) { ++ u64 res = atomic64_read(&sk->sk_cookie); ++ ++ if (res) ++ return res; ++ res = atomic64_inc_return(&sock_net(sk)->cookie_gen); ++ atomic64_cmpxchg(&sk->sk_cookie, 0, res); ++ } ++} ++ + struct dst_entry *__sk_dst_check(struct sock *sk, u32 cookie) + { + struct dst_entry *dst = __sk_dst_get(sk); +@@ -1603,9 +1615,11 @@ static void __sk_free(struct sock *sk) + if (likely(sk->sk_net_refcnt)) + sock_inuse_add(sock_net(sk), -1); + ++#ifdef CONFIG_SOCK_DIAG + if (unlikely(sk->sk_net_refcnt && sock_diag_has_destroy_listeners(sk))) + sock_diag_broadcast_destroy(sk); + else ++#endif + sk_destruct(sk); + } + +--- a/net/core/sock_diag.c ++++ b/net/core/sock_diag.c +@@ -20,18 +20,6 @@ static int (*inet_rcv_compat)(struct sk_ + static DEFINE_MUTEX(sock_diag_table_mutex); + static struct workqueue_struct *broadcast_wq; + +-u64 sock_gen_cookie(struct sock *sk) +-{ +- while (1) { +- u64 res = atomic64_read(&sk->sk_cookie); +- +- if (res) +- return res; +- res = atomic64_inc_return(&sock_net(sk)->cookie_gen); +- atomic64_cmpxchg(&sk->sk_cookie, 0, res); +- } +-} +- + int sock_diag_check_cookie(struct sock *sk, const __u32 *cookie) + { + u64 res; +--- a/net/ipv4/Kconfig ++++ b/net/ipv4/Kconfig +@@ -425,6 +425,7 @@ config INET_XFRM_MODE_BEET + + config INET_DIAG + tristate "INET: socket monitoring interface" ++ select SOCK_DIAG + default y + ---help--- + Support for INET (TCP, DCCP, etc) socket monitoring interface used by +--- a/net/netlink/Kconfig ++++ b/net/netlink/Kconfig +@@ -4,6 +4,7 @@ + + config NETLINK_DIAG + tristate "NETLINK: socket monitoring interface" ++ select SOCK_DIAG + default n + ---help--- + Support for NETLINK socket monitoring interface used by the ss tool. +--- a/net/packet/Kconfig ++++ b/net/packet/Kconfig +@@ -18,6 +18,7 @@ config PACKET + config PACKET_DIAG + tristate "Packet: sockets monitoring interface" + depends on PACKET ++ select SOCK_DIAG + default n + ---help--- + Support for PF_PACKET sockets monitoring interface used by the ss tool. +--- a/net/unix/Kconfig ++++ b/net/unix/Kconfig +@@ -22,6 +22,7 @@ config UNIX + config UNIX_DIAG + tristate "UNIX: socket monitoring interface" + depends on UNIX ++ select SOCK_DIAG + default n + ---help--- + Support for UNIX socket monitoring interface used by the ss tool. -- cgit v1.2.3