/* * (C) 1999-2001 Paul `Rusty' Russell * (C) 2002-2006 Netfilter Core Team * (C) 2011 Patrick McHardy * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include #include #include #include #include static int xt_nat_checkentry_v0(const struct xt_tgchk_param *par) { const struct nf_nat_ipv4_multi_range_compat *mr = par->targinfo; if (mr->rangesize != 1) { pr_info("%s: multiple ranges no longer supported\n", par->target->name); return -EINVAL; } return nf_ct_netns_get(par->net, par->family); } static int xt_nat_checkentry(const struct xt_tgchk_param *par) { return nf_ct_netns_get(par->net, par->family); } static void xt_nat_destroy(const struct xt_tgdtor_param *par) { nf_ct_netns_put(par->net, par->family); } static void xt_nat_convert_range(struct nf_nat_range *dst, const struct nf_nat_ipv4_range *src) { memset(&dst->min_addr, 0, sizeof(dst->min_addr)); memset(&dst->max_addr, 0, sizeof(dst->max_addr)); dst->flags = src->flags; dst->min_addr.ip = src->min_ip; dst->max_addr.ip = src->max_ip; dst->min_proto = src->min; dst->max_proto = src->max; } static unsigned int xt_snat_target_v0(struct sk_buff *skb, const struct xt_action_param *par) { const struct nf_nat_ipv4_multi_range_compat *mr = par->targinfo; struct nf_nat_range range; enum ip_conntrack_info ctinfo; struct nf_conn *ct; ct = nf_ct_get(skb, &ctinfo); NF_CT_ASSERT(ct != NULL && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED || ctinfo == IP_CT_RELATED_REPLY)); xt_nat_convert_range(&range, &mr->range[0]); return nf_nat_setup_info(ct, &range, NF_NAT_MANIP_SRC); } static unsigned int xt_dnat_target_v0(struct sk_buff *skb, const struct xt_action_param *par) { const struct nf_nat_ipv4_multi_range_compat *mr = par->targinfo; struct nf_nat_range range; enum ip_conntrack_info ctinfo; struct nf_conn *ct; ct = nf_ct_get(skb, &ctinfo); NF_CT_ASSERT(ct != NULL && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED)); xt_nat_convert_range(&range, &mr->range[0]); return nf_nat_setup_info(ct, &range, NF_NAT_MANIP_DST); } static unsigned int xt_snat_target_v1(struct sk_buff *skb, const struct xt_action_param *par) { const struct nf_nat_range *range = par->targinfo; enum ip_conntrack_info ctinfo; struct nf_conn *ct; ct = nf_ct_get(skb, &ctinfo); NF_CT_ASSERT(ct != NULL && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED || ctinfo == IP_CT_RELATED_REPLY)); return nf_nat_setup_info(ct, range, NF_NAT_MANIP_SRC); } static unsigned int xt_dnat_target_v1(struct sk_buff *skb, const struct xt_action_param *par) { const struct nf_nat_range *range = par->targinfo; enum ip_conntrack_info ctinfo; struct nf_conn *ct; ct = nf_ct_get(skb, &ctinfo); NF_CT_ASSERT(ct != NULL && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED)); return nf_nat_setup_info(ct, range, NF_NAT_MANIP_DST); } static struct xt_target xt_nat_target_reg[] __read_mostly = { { .name = "SNAT", .revision = 0, .checkentry = xt_nat_checkentry_v0, .destroy = xt_nat_destroy, .target = xt_snat_target_v0, .targetsize = sizeof(struct nf_nat_ipv4_multi_range_compat), .family = NFPROTO_IPV4, .table = "nat", .hooks = (1 << NF_INET_POST_ROUTING) | (1 << NF_INET_LOCAL_IN), .me = THIS_MODULE, }, { .name = "DNAT", .revision = 0, .checkentry = xt_nat_checkentry_v0, .destroy = xt_nat_destroy, .target = xt_dnat_target_v0, .targetsize = sizeof(struct nf_nat_ipv4_multi_range_compat), .family = NFPROTO_IPV4, .table = "nat", .hooks = (1 << NF_INET_PRE_ROUTING) | (1 << NF_INET_LOCAL_OUT), .me = THIS_MODULE, }, { .name = "SNAT", .revision = 1, .checkentry = xt_nat_checkentry, .destroy = xt_nat_destroy, .target = xt_snat_target_v1, .targetsize = sizeof(struct nf_nat_range), .table = "nat", .hooks = (1 << NF_INET_POST_ROUTING) | (1 << NF_INET_LOCAL_IN), .me = THIS_MODULE, }, { .name = "DNAT", .revision = 1, .checkentry = xt_nat_checkentry, .destroy = xt_nat_destroy, .target = xt_dnat_target_v1, .targetsize = sizeof(struct nf_nat_range), .table = "nat", .hooks = (1 << NF_INET_PRE_ROUTING) | (1 << NF_INET_LOCAL_OUT), .me = THIS_MODULE, }, }; static int __init xt_nat_init(void) { return xt_register_targets(xt_nat_target_reg, ARRAY_SIZE(xt_nat_target_reg)); } static void __exit xt_nat_exit(void) { xt_unregister_targets(xt_nat_target_reg, ARRAY_SIZE(xt_nat_target_reg)); } module_init(xt_nat_init); module_exit(xt_nat_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Patrick McHardy "); MODULE_ALIAS("ipt_SNAT"); MODULE_ALIAS("ipt_DNAT"); MODULE_ALIAS("ip6t_SNAT"); MODULE_ALIAS("ip6t_DNAT"); ;2017-01-31 23:58:38 +0100 committerIngo Molnar <mingo@kernel.org>2017-02-01 08:37:27 +0100 commitdd86e373e09fb16b83e8adf5c48c421a4ca76468 (patch) tree55703c2ea8584e303e342090614e0aab3509ab21 /net/bluetooth/6lowpan.c parent0b3589be9b98994ce3d5aeca52445d1f5627c4ba (diff)
perf/x86/intel/rapl: Make package handling more robust
The package management code in RAPL relies on package mapping being available before a CPU is started. This changed with: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") because the ACPI/BIOS information turned out to be unreliable, but that left RAPL in broken state. This was not noticed because on a regular boot all CPUs are online before RAPL is initialized. A possible fix would be to reintroduce the mess which allocates a package data structure in CPU prepare and when it turns out to already exist in starting throw it away later in the CPU online callback. But that's a horrible hack and not required at all because RAPL becomes functional for perf only in the CPU online callback. That's correct because user space is not yet informed about the CPU being onlined, so nothing caan rely on RAPL being available on that particular CPU. Move the allocation to the CPU online callback and simplify the hotplug handling. At this point the package mapping is established and correct. This also adds a missing check for available package data in the event_init() function. Reported-by: Yasuaki Ishimatsu <yasu.isimatu@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Stephane Eranian <eranian@google.com> Cc: Vince Weaver <vincent.weaver@maine.edu> Fixes: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") Link: http://lkml.kernel.org/r/20170131230141.212593966@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'net/bluetooth/6lowpan.c')