From 1dab62226dd9e0c0051229e7868363663546c772 Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Sun, 2 Dec 2007 00:59:38 +1100 Subject: [PATCH] [IPV6]: Use ctl paths to register addrconf sysctls This looks very much like the patch for ipv4's devinet. This is also intended to help us with the net namespaces and saves the ipv6.ko size by ~320 bytes. The difference from the first version is just the patch offsets, that changed due to changes in the patch #2. Signed-off-by: Pavel Emelyanov Signed-off-by: Herbert Xu Signed-off-by: David S. Miller --- net/ipv6/addrconf.c | 80 ++++++++++++--------------------------------- 1 file changed, 20 insertions(+), 60 deletions(-) diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index ea1673d29078..dbff389b7003 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -3848,10 +3848,7 @@ static struct addrconf_sysctl_table { struct ctl_table_header *sysctl_header; ctl_table addrconf_vars[__NET_IPV6_MAX]; - ctl_table addrconf_dev[2]; - ctl_table addrconf_conf_dir[2]; - ctl_table addrconf_proto_dir[2]; - ctl_table addrconf_root_dir[2]; + char *dev_name; } addrconf_sysctl __read_mostly = { .sysctl_header = NULL, .addrconf_vars = { @@ -4072,50 +4069,6 @@ static struct addrconf_sysctl_table .ctl_name = 0, /* sentinel */ } }, - .addrconf_dev = { - { - .ctl_name = NET_PROTO_CONF_ALL, - .procname = "all", - .mode = 0555, - .child = addrconf_sysctl.addrconf_vars, - }, - { - .ctl_name = 0, /* sentinel */ - } - }, - .addrconf_conf_dir = { - { - .ctl_name = NET_IPV6_CONF, - .procname = "conf", - .mode = 0555, - .child = addrconf_sysctl.addrconf_dev, - }, - { - .ctl_name = 0, /* sentinel */ - } - }, - .addrconf_proto_dir = { - { - .ctl_name = NET_IPV6, - .procname = "ipv6", - .mode = 0555, - .child = addrconf_sysctl.addrconf_conf_dir, - }, - { - .ctl_name = 0, /* sentinel */ - } - }, - .addrconf_root_dir = { - { - .ctl_name = CTL_NET, - .procname = "net", - .mode = 0555, - .child = addrconf_sysctl.addrconf_proto_dir, - }, - { - .ctl_name = 0, /* sentinel */ - } - }, }; static void __addrconf_sysctl_register(char *dev_name, int ctl_name, @@ -4124,6 +4077,17 @@ static void __addrconf_sysctl_register(char *dev_name, int ctl_name, int i; struct addrconf_sysctl_table *t; +#define ADDRCONF_CTL_PATH_DEV 3 + + struct ctl_path addrconf_ctl_path[] = { + { .procname = "net", .ctl_name = CTL_NET, }, + { .procname = "ipv6", .ctl_name = NET_IPV6, }, + { .procname = "conf", .ctl_name = NET_IPV6_CONF, }, + { /* to be set */ }, + { }, + }; + + t = kmemdup(&addrconf_sysctl, sizeof(*t), GFP_KERNEL); if (t == NULL) goto out; @@ -4138,19 +4102,15 @@ static void __addrconf_sysctl_register(char *dev_name, int ctl_name, * by sysctl and we wouldn't want anyone to change it under our feet * (see SIOCSIFNAME). */ - dev_name = kstrdup(dev_name, GFP_KERNEL); - if (!dev_name) + t->dev_name = kstrdup(dev_name, GFP_KERNEL); + if (!t->dev_name) goto free; - t->addrconf_dev[0].ctl_name = ctl_name; - t->addrconf_dev[0].procname = dev_name; - - t->addrconf_dev[0].child = t->addrconf_vars; - t->addrconf_conf_dir[0].child = t->addrconf_dev; - t->addrconf_proto_dir[0].child = t->addrconf_conf_dir; - t->addrconf_root_dir[0].child = t->addrconf_proto_dir; + addrconf_ctl_path[ADDRCONF_CTL_PATH_DEV].procname = t->dev_name; + addrconf_ctl_path[ADDRCONF_CTL_PATH_DEV].ctl_name = ctl_name; - t->sysctl_header = register_sysctl_table(t->addrconf_root_dir); + t->sysctl_header = register_sysctl_paths(addrconf_ctl_path, + t->addrconf_vars); if (t->sysctl_header == NULL) goto free_procname; @@ -4158,7 +4118,7 @@ static void __addrconf_sysctl_register(char *dev_name, int ctl_name, return; free_procname: - kfree(dev_name); + kfree(t->dev_name); free: kfree(t); out: @@ -4177,7 +4137,7 @@ static void addrconf_sysctl_unregister(struct ipv6_devconf *p) struct addrconf_sysctl_table *t = p->sysctl; p->sysctl = NULL; unregister_sysctl_table(t->sysctl_header); - kfree(t->addrconf_dev[0].procname); + kfree(t->dev_name); kfree(t); } } -- 2.39.5