openssl - Mirror of https://github.com/openssl/openssl

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author	Lutz Jänicke <jaenicke@openssl.org>	2008-04-17 10:19:16 +0000
committer	Lutz Jänicke <jaenicke@openssl.org>	2008-04-17 10:19:16 +0000
commit	4c1a6e004a940a66c1d113ea3656a124e3dca1ea (patch)
tree	83046c2cd8ef940d621c2be052fa822c31730ee0 /crypto/ts
parent	6e6ada18c626baf0215accb3a377f3b1c0e862c1 (diff)

Apply mingw patches as supplied by Roumen Petrov an Alon Bar-Lev

PR: 1552 Submitted by: Roumen Petrov <openssl@roumenpetrov.info>, "Alon Bar-Lev" <alon.barlev@gmail.com>

Diffstat (limited to 'crypto/ts')

-rw-r--r--

crypto/ts/.cvsignore

1 files changed, 1 insertions, 0 deletions

/* * Copyright (c) 2008-2009 Patrick McHardy <kaber@trash.net> * * 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. * * Development of this code funded by Astaro AG (http://www.astaro.com/) */ #include <linux/kernel.h> #include <linux/init.h> #include <linux/module.h> #include <linux/spinlock.h> #include <linux/netlink.h> #include <linux/netfilter.h> #include <linux/netfilter/nf_tables.h> #include <net/netfilter/nf_tables.h> static DEFINE_SPINLOCK(limit_lock); struct nft_limit { u64 last; u64 tokens; u64 tokens_max; u64 rate; u64 nsecs; u32 burst; bool invert; }; static inline bool nft_limit_eval(struct nft_limit *limit, u64 cost) { u64 now, tokens; s64 delta; spin_lock_bh(&limit_lock); now = ktime_get_ns(); tokens = limit->tokens + now - limit->last; if (tokens > limit->tokens_max) tokens = limit->tokens_max; limit->last = now; delta = tokens - cost; if (delta >= 0) { limit->tokens = delta; spin_unlock_bh(&limit_lock); return limit->invert; } limit->tokens = tokens; spin_unlock_bh(&limit_lock); return !limit->invert; } static int nft_limit_init(struct nft_limit *limit, const struct nlattr * const tb[]) { u64 unit; if (tb[NFTA_LIMIT_RATE] == NULL || tb[NFTA_LIMIT_UNIT] == NULL) return -EINVAL; limit->rate = be64_to_cpu(nla_get_be64(tb[NFTA_LIMIT_RATE])); unit = be64_to_cpu(nla_get_be64(tb[NFTA_LIMIT_UNIT])); limit->nsecs = unit * NSEC_PER_SEC; if (limit->rate == 0 || limit->nsecs < unit) return -EOVERFLOW; limit->tokens = limit->tokens_max = limit->nsecs; if (tb[NFTA_LIMIT_BURST]) { u64 rate; limit->burst = ntohl(nla_get_be32(tb[NFTA_LIMIT_BURST])); rate = limit->rate + limit->burst; if (rate < limit->rate) return -EOVERFLOW; limit->rate = rate; } if (tb[NFTA_LIMIT_FLAGS]) { u32 flags = ntohl(nla_get_be32(tb[NFTA_LIMIT_FLAGS])); if (flags & NFT_LIMIT_F_INV) limit->invert = true; } limit->last = ktime_get_ns(); return 0; } static int nft_limit_dump(struct sk_buff *skb, const struct nft_limit *limit, enum nft_limit_type type) { u32 flags = limit->invert ? NFT_LIMIT_F_INV : 0; u64 secs = div_u64(limit->nsecs, NSEC_PER_SEC); u64 rate = limit->rate - limit->burst; if (nla_put_be64(skb, NFTA_LIMIT_RATE, cpu_to_be64(rate), NFTA_LIMIT_PAD) || nla_put_be64(skb, NFTA_LIMIT_UNIT, cpu_to_be64(secs), NFTA_LIMIT_PAD) || nla_put_be32(skb, NFTA_LIMIT_BURST, htonl(limit->burst)) || nla_put_be32(skb, NFTA_LIMIT_TYPE, htonl(type)) || nla_put_be32(skb, NFTA_LIMIT_FLAGS, htonl(flags))) goto nla_put_failure; return 0; nla_put_failure: return -1; } struct nft_limit_pkts { struct nft_limit limit; u64 cost; }; static void nft_limit_pkts_eval(const struct nft_expr *expr, struct nft_regs *regs, const struct nft_pktinfo *pkt) { struct nft_limit_pkts *priv = nft_expr_priv(expr); if (nft_limit_eval(&priv->limit, priv->cost)) regs->verdict.code = NFT_BREAK; } static const struct nla_policy nft_limit_policy[NFTA_LIMIT_MAX + 1] = { [NFTA_LIMIT_RATE] = { .type = NLA_U64 }, [NFTA_LIMIT_UNIT] = { .type = NLA_U64 }, [NFTA_LIMIT_BURST] = { .type = NLA_U32 }, [NFTA_LIMIT_TYPE] = { .type = NLA_U32 }, [NFTA_LIMIT_FLAGS] = { .type = NLA_U32 }, }; static int nft_limit_pkts_init(const struct nft_ctx *ctx, const struct nft_expr *expr, const struct nlattr * const tb[]) { struct nft_limit_pkts *priv = nft_expr_priv(expr); int err; err = nft_limit_init(&priv->limit, tb); if (err < 0) return err; priv->cost = div64_u64(priv->limit.nsecs, priv->limit.rate); return 0; } static int nft_limit_pkts_dump(struct sk_buff *skb, const struct nft_expr *expr) { const struct nft_limit_pkts *priv = nft_expr_priv(expr); return nft_limit_dump(skb, &priv->limit, NFT_LIMIT_PKTS); } static struct nft_expr_type nft_limit_type; static const struct nft_expr_ops nft_limit_pkts_ops = { .type = &nft_limit_type, .size = NFT_EXPR_SIZE(sizeof(struct nft_limit_pkts)), .eval = nft_limit_pkts_eval, .init = nft_limit_pkts_init, .dump = nft_limit_pkts_dump, }; static void nft_limit_pkt_bytes_eval(const struct nft_expr *expr, struct nft_regs *regs, const struct nft_pktinfo *pkt) { struct nft_limit *priv = nft_expr_priv(expr); u64 cost = div64_u64(priv->nsecs * pkt->skb->len, priv->rate); if (nft_limit_eval(priv, cost)) regs->verdict.code = NFT_BREAK; } static int nft_limit_pkt_bytes_init(const struct nft_ctx *ctx, const struct nft_expr *expr, const struct nlattr * const tb[]) { struct nft_limit *priv = nft_expr_priv(expr); return nft_limit_init(priv, tb); } static int nft_limit_pkt_bytes_dump(struct sk_buff *skb, const struct nft_expr *expr) { const struct nft_limit *priv = nft_expr_priv(expr); return nft_limit_dump(skb, priv, NFT_LIMIT_PKT_BYTES); } static const struct nft_expr_ops nft_limit_pkt_bytes_ops = { .type = &nft_limit_type, .size = NFT_EXPR_SIZE(sizeof(struct nft_limit)), .eval = nft_limit_pkt_bytes_eval, .init = nft_limit_pkt_bytes_init, .dump = nft_limit_pkt_bytes_dump, }; static const struct nft_expr_ops * nft_limit_select_ops(const struct nft_ctx *ctx, const struct nlattr * const tb[]) { if (tb[NFTA_LIMIT_TYPE] == NULL) return &nft_limit_pkts_ops; switch (ntohl(nla_get_be32(tb[NFTA_LIMIT_TYPE]))) { case NFT_LIMIT_PKTS: return &nft_limit_pkts_ops; case NFT_LIMIT_PKT_BYTES: return &nft_limit_pkt_bytes_ops; } return ERR_PTR(-EOPNOTSUPP); } static struct nft_expr_type nft_limit_type __read_mostly = { .name = "limit", .select_ops = nft_limit_select_ops, .policy = nft_limit_policy, .maxattr = NFTA_LIMIT_MAX, .flags = NFT_EXPR_STATEFUL, .owner = THIS_MODULE, }; static int __init nft_limit_module_init(void) { return nft_register_expr(&nft_limit_type); } static void __exit nft_limit_module_exit(void) { nft_unregister_expr(&nft_limit_type); } module_init(nft_limit_module_init); module_exit(nft_limit_module_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); MODULE_ALIAS_NFT_EXPR("limit");


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