diff options
Diffstat (limited to 'target/linux/generic/hack-4.14/901-debloat_sock_diag.patch')
| -rw-r--r-- | target/linux/generic/hack-4.14/901-debloat_sock_diag.patch | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/target/linux/generic/hack-4.14/901-debloat_sock_diag.patch b/target/linux/generic/hack-4.14/901-debloat_sock_diag.patch new file mode 100644 index 0000000000..d854865d60 --- /dev/null +++ b/target/linux/generic/hack-4.14/901-debloat_sock_diag.patch @@ -0,0 +1,136 @@ +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 +@@ -97,6 +97,9 @@ 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-$(CONFIG_SYSCTL) += sysctl_net_core. + + obj-y += dev.o ethtool.o dev_addr_lists.o dst.o netevent.o \ + neighbour.o rtnetlink.o utils.o link_watch.o filter.o \ +- sock_diag.o dev_ioctl.o tso.o sock_reuseport.o \ ++ dev_ioctl.o tso.o sock_reuseport.o \ + fib_notifier.o + ++obj-$(CONFIG_SOCK_DIAG) += sock_diag.o + obj-y += net-sysfs.o + obj-$(CONFIG_PROC_FS) += net-procfs.o + obj-$(CONFIG_NET_PKTGEN) += pktgen.o +--- a/net/core/sock.c ++++ b/net/core/sock.c +@@ -528,6 +528,18 @@ 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); +@@ -1597,9 +1609,11 @@ void sk_destruct(struct sock *sk) + + static void __sk_free(struct sock *sk) + { ++#ifdef CONFIG_SOCK_DIAG + if (unlikely(sock_diag_has_destroy_listeners(sk) && sk->sk_net_refcnt)) + sock_diag_broadcast_destroy(sk); + else ++#endif + sk_destruct(sk); + } + +--- a/net/core/sock_diag.c ++++ b/net/core/sock_diag.c +@@ -19,18 +19,6 @@ 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 +@@ -420,6 +420,7 @@ 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. |