diff options
Diffstat (limited to 'pkgs/patches-linux-5.15/901-debloat_sock_diag.patch')
| -rw-r--r-- | pkgs/patches-linux-5.15/901-debloat_sock_diag.patch | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/pkgs/patches-linux-5.15/901-debloat_sock_diag.patch b/pkgs/patches-linux-5.15/901-debloat_sock_diag.patch new file mode 100644 index 0000000..ab629d5 --- /dev/null +++ b/pkgs/patches-linux-5.15/901-debloat_sock_diag.patch @@ -0,0 +1,162 @@ +From 3b6115d6b57a263bdc8c9b1df273bd4a7955eead Mon Sep 17 00:00:00 2001 +From: Felix Fietkau <nbd@nbd.name> +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 <nbd@nbd.name> +--- + 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 +@@ -104,6 +104,9 @@ source "net/mptcp/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-$(CONFIG_SYSCTL) += sysctl_net_core. + + obj-y += dev.o dev_addr_lists.o dst.o netevent.o \ + neighbour.o rtnetlink.o utils.o link_watch.o filter.o \ +- sock_diag.o dev_ioctl.o tso.o sock_reuseport.o \ ++ dev_ioctl.o tso.o sock_reuseport.o \ + fib_notifier.o xdp.o flow_offload.o + ++obj-$(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 +@@ -114,6 +114,7 @@ + #include <linux/memcontrol.h> + #include <linux/prefetch.h> + #include <linux/compat.h> ++#include <linux/cookie.h> + + #include <linux/uaccess.h> + +@@ -143,6 +144,7 @@ + + static DEFINE_MUTEX(proto_list_mutex); + static LIST_HEAD(proto_list); ++DEFINE_COOKIE(sock_cookie); + + static void sock_inuse_add(struct net *net, int val); + +@@ -545,6 +547,18 @@ 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 = gen_cookie_next(&sock_cookie); ++ atomic64_cmpxchg(&sk->sk_cookie, 0, res); ++ } ++} ++ + INDIRECT_CALLABLE_DECLARE(struct dst_entry *ip6_dst_check(struct dst_entry *, + u32)); + INDIRECT_CALLABLE_DECLARE(struct dst_entry *ipv4_dst_check(struct dst_entry *, +@@ -1983,9 +1997,11 @@ 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 +@@ -11,7 +11,6 @@ + #include <linux/tcp.h> + #include <linux/workqueue.h> + #include <linux/nospec.h> +-#include <linux/cookie.h> + #include <linux/inet_diag.h> + #include <linux/sock_diag.h> + +@@ -20,20 +19,6 @@ static int (*inet_rcv_compat)(struct sk_ + static DEFINE_MUTEX(sock_diag_table_mutex); + static struct workqueue_struct *broadcast_wq; + +-DEFINE_COOKIE(sock_cookie); +- +-u64 __sock_gen_cookie(struct sock *sk) +-{ +- while (1) { +- u64 res = atomic64_read(&sk->sk_cookie); +- +- if (res) +- return res; +- res = gen_cookie_next(&sock_cookie); +- 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 +@@ -414,6 +414,7 @@ config INET_TUNNEL + + 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 +@@ -5,6 +5,7 @@ + + 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 +@@ -19,6 +19,7 @@ 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 +@@ -33,6 +33,7 @@ config AF_UNIX_OOB + 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. |