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net/ipv6/ip6mr.c
50.8 KB
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/* * Linux IPv6 multicast routing support for BSD pim6sd * Based on net/ipv4/ipmr.c. * * (c) 2004 Mickael Hoerdt, <hoerdt@clarinet.u-strasbg.fr> * LSIIT Laboratory, Strasbourg, France * (c) 2004 Jean-Philippe Andriot, <jean-philippe.andriot@6WIND.com> * 6WIND, Paris, France * Copyright (C)2007,2008 USAGI/WIDE Project * YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * */ #include <asm/system.h> #include <asm/uaccess.h> #include <linux/types.h> #include <linux/sched.h> #include <linux/errno.h> #include <linux/timer.h> #include <linux/mm.h> #include <linux/kernel.h> #include <linux/fcntl.h> #include <linux/stat.h> #include <linux/socket.h> |
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#include <linux/inet.h> #include <linux/netdevice.h> #include <linux/inetdevice.h> |
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#include <linux/proc_fs.h> #include <linux/seq_file.h> |
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#include <linux/init.h> |
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#include <linux/slab.h> |
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#include <linux/compat.h> |
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#include <net/protocol.h> #include <linux/skbuff.h> #include <net/sock.h> |
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#include <net/raw.h> |
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#include <linux/notifier.h> #include <linux/if_arp.h> |
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#include <net/checksum.h> #include <net/netlink.h> |
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#include <net/fib_rules.h> |
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#include <net/ipv6.h> #include <net/ip6_route.h> #include <linux/mroute6.h> |
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#include <linux/pim.h> |
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#include <net/addrconf.h> #include <linux/netfilter_ipv6.h> |
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#include <linux/export.h> |
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#include <net/ip6_checksum.h> |
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|
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struct mr6_table { |
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struct list_head list; |
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#ifdef CONFIG_NET_NS struct net *net; #endif |
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u32 id; |
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struct sock *mroute6_sk; struct timer_list ipmr_expire_timer; struct list_head mfc6_unres_queue; struct list_head mfc6_cache_array[MFC6_LINES]; struct mif_device vif6_table[MAXMIFS]; int maxvif; atomic_t cache_resolve_queue_len; int mroute_do_assert; int mroute_do_pim; #ifdef CONFIG_IPV6_PIMSM_V2 int mroute_reg_vif_num; #endif }; |
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struct ip6mr_rule { struct fib_rule common; }; struct ip6mr_result { struct mr6_table *mrt; }; |
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/* Big lock, protecting vif table, mrt cache and mroute socket state. Note that the changes are semaphored via rtnl_lock. */ static DEFINE_RWLOCK(mrt_lock); /* * Multicast router control variables */ |
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#define MIF_EXISTS(_mrt, _idx) ((_mrt)->vif6_table[_idx].dev != NULL) |
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|
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/* Special spinlock for queue of unresolved entries */ static DEFINE_SPINLOCK(mfc_unres_lock); /* We return to original Alan's scheme. Hash table of resolved entries is changed only in process context and protected with weak lock mrt_lock. Queue of unresolved entries is protected with strong spinlock mfc_unres_lock. In this case data path is free of exclusive locks at all. */ static struct kmem_cache *mrt_cachep __read_mostly; |
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static struct mr6_table *ip6mr_new_table(struct net *net, u32 id); static void ip6mr_free_table(struct mr6_table *mrt); |
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static int ip6_mr_forward(struct net *net, struct mr6_table *mrt, struct sk_buff *skb, struct mfc6_cache *cache); static int ip6mr_cache_report(struct mr6_table *mrt, struct sk_buff *pkt, |
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mifi_t mifi, int assert); |
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static int __ip6mr_fill_mroute(struct mr6_table *mrt, struct sk_buff *skb, struct mfc6_cache *c, struct rtmsg *rtm); static int ip6mr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb); |
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static void mroute_clean_tables(struct mr6_table *mrt); |
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static void ipmr_expire_process(unsigned long arg); #ifdef CONFIG_IPV6_MROUTE_MULTIPLE_TABLES |
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#define ip6mr_for_each_table(mrt, net) \ |
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list_for_each_entry_rcu(mrt, &net->ipv6.mr6_tables, list) static struct mr6_table *ip6mr_get_table(struct net *net, u32 id) { struct mr6_table *mrt; ip6mr_for_each_table(mrt, net) { if (mrt->id == id) return mrt; } return NULL; } |
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static int ip6mr_fib_lookup(struct net *net, struct flowi6 *flp6, |
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struct mr6_table **mrt) { struct ip6mr_result res; struct fib_lookup_arg arg = { .result = &res, }; int err; |
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err = fib_rules_lookup(net->ipv6.mr6_rules_ops, flowi6_to_flowi(flp6), 0, &arg); |
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if (err < 0) return err; *mrt = res.mrt; return 0; } static int ip6mr_rule_action(struct fib_rule *rule, struct flowi *flp, int flags, struct fib_lookup_arg *arg) { struct ip6mr_result *res = arg->result; struct mr6_table *mrt; switch (rule->action) { case FR_ACT_TO_TBL: break; case FR_ACT_UNREACHABLE: return -ENETUNREACH; case FR_ACT_PROHIBIT: return -EACCES; case FR_ACT_BLACKHOLE: default: return -EINVAL; } mrt = ip6mr_get_table(rule->fr_net, rule->table); if (mrt == NULL) return -EAGAIN; res->mrt = mrt; return 0; } static int ip6mr_rule_match(struct fib_rule *rule, struct flowi *flp, int flags) { return 1; } static const struct nla_policy ip6mr_rule_policy[FRA_MAX + 1] = { FRA_GENERIC_POLICY, }; static int ip6mr_rule_configure(struct fib_rule *rule, struct sk_buff *skb, struct fib_rule_hdr *frh, struct nlattr **tb) { return 0; } static int ip6mr_rule_compare(struct fib_rule *rule, struct fib_rule_hdr *frh, struct nlattr **tb) { return 1; } static int ip6mr_rule_fill(struct fib_rule *rule, struct sk_buff *skb, struct fib_rule_hdr *frh) { frh->dst_len = 0; frh->src_len = 0; frh->tos = 0; return 0; } static const struct fib_rules_ops __net_initdata ip6mr_rules_ops_template = { .family = RTNL_FAMILY_IP6MR, .rule_size = sizeof(struct ip6mr_rule), .addr_size = sizeof(struct in6_addr), .action = ip6mr_rule_action, .match = ip6mr_rule_match, .configure = ip6mr_rule_configure, .compare = ip6mr_rule_compare, .default_pref = fib_default_rule_pref, .fill = ip6mr_rule_fill, .nlgroup = RTNLGRP_IPV6_RULE, .policy = ip6mr_rule_policy, .owner = THIS_MODULE, }; static int __net_init ip6mr_rules_init(struct net *net) { struct fib_rules_ops *ops; struct mr6_table *mrt; int err; ops = fib_rules_register(&ip6mr_rules_ops_template, net); if (IS_ERR(ops)) return PTR_ERR(ops); INIT_LIST_HEAD(&net->ipv6.mr6_tables); mrt = ip6mr_new_table(net, RT6_TABLE_DFLT); if (mrt == NULL) { err = -ENOMEM; goto err1; } err = fib_default_rule_add(ops, 0x7fff, RT6_TABLE_DFLT, 0); if (err < 0) goto err2; net->ipv6.mr6_rules_ops = ops; return 0; err2: kfree(mrt); err1: fib_rules_unregister(ops); return err; } static void __net_exit ip6mr_rules_exit(struct net *net) { struct mr6_table *mrt, *next; |
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list_for_each_entry_safe(mrt, next, &net->ipv6.mr6_tables, list) { list_del(&mrt->list); |
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ip6mr_free_table(mrt); |
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} |
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fib_rules_unregister(net->ipv6.mr6_rules_ops); } #else #define ip6mr_for_each_table(mrt, net) \ for (mrt = net->ipv6.mrt6; mrt; mrt = NULL) static struct mr6_table *ip6mr_get_table(struct net *net, u32 id) { return net->ipv6.mrt6; } |
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static int ip6mr_fib_lookup(struct net *net, struct flowi6 *flp6, |
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struct mr6_table **mrt) { *mrt = net->ipv6.mrt6; return 0; } static int __net_init ip6mr_rules_init(struct net *net) { net->ipv6.mrt6 = ip6mr_new_table(net, RT6_TABLE_DFLT); return net->ipv6.mrt6 ? 0 : -ENOMEM; } static void __net_exit ip6mr_rules_exit(struct net *net) { ip6mr_free_table(net->ipv6.mrt6); } #endif static struct mr6_table *ip6mr_new_table(struct net *net, u32 id) { struct mr6_table *mrt; unsigned int i; mrt = ip6mr_get_table(net, id); if (mrt != NULL) return mrt; mrt = kzalloc(sizeof(*mrt), GFP_KERNEL); if (mrt == NULL) return NULL; mrt->id = id; write_pnet(&mrt->net, net); /* Forwarding cache */ for (i = 0; i < MFC6_LINES; i++) INIT_LIST_HEAD(&mrt->mfc6_cache_array[i]); INIT_LIST_HEAD(&mrt->mfc6_unres_queue); setup_timer(&mrt->ipmr_expire_timer, ipmr_expire_process, (unsigned long)mrt); #ifdef CONFIG_IPV6_PIMSM_V2 mrt->mroute_reg_vif_num = -1; #endif #ifdef CONFIG_IPV6_MROUTE_MULTIPLE_TABLES list_add_tail_rcu(&mrt->list, &net->ipv6.mr6_tables); #endif return mrt; } |
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static void ip6mr_free_table(struct mr6_table *mrt) { del_timer(&mrt->ipmr_expire_timer); mroute_clean_tables(mrt); kfree(mrt); } |
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#ifdef CONFIG_PROC_FS struct ipmr_mfc_iter { |
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struct seq_net_private p; |
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struct mr6_table *mrt; |
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struct list_head *cache; |
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int ct; }; |
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static struct mfc6_cache *ipmr_mfc_seq_idx(struct net *net, struct ipmr_mfc_iter *it, loff_t pos) |
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{ |
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struct mr6_table *mrt = it->mrt; |
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struct mfc6_cache *mfc; |
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read_lock(&mrt_lock); |
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for (it->ct = 0; it->ct < MFC6_LINES; it->ct++) { |
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it->cache = &mrt->mfc6_cache_array[it->ct]; |
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list_for_each_entry(mfc, it->cache, list) |
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if (pos-- == 0) return mfc; |
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} |
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read_unlock(&mrt_lock); |
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spin_lock_bh(&mfc_unres_lock); |
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it->cache = &mrt->mfc6_unres_queue; |
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list_for_each_entry(mfc, it->cache, list) |
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if (pos-- == 0) |
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return mfc; spin_unlock_bh(&mfc_unres_lock); it->cache = NULL; return NULL; } |
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/* * The /proc interfaces to multicast routing /proc/ip6_mr_cache /proc/ip6_mr_vif */ struct ipmr_vif_iter { |
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struct seq_net_private p; |
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struct mr6_table *mrt; |
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int ct; }; |
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static struct mif_device *ip6mr_vif_seq_idx(struct net *net, struct ipmr_vif_iter *iter, |
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loff_t pos) { |
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struct mr6_table *mrt = iter->mrt; |
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for (iter->ct = 0; iter->ct < mrt->maxvif; ++iter->ct) { if (!MIF_EXISTS(mrt, iter->ct)) |
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continue; if (pos-- == 0) |
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return &mrt->vif6_table[iter->ct]; |
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} return NULL; } static void *ip6mr_vif_seq_start(struct seq_file *seq, loff_t *pos) __acquires(mrt_lock) { |
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struct ipmr_vif_iter *iter = seq->private; |
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struct net *net = seq_file_net(seq); |
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struct mr6_table *mrt; mrt = ip6mr_get_table(net, RT6_TABLE_DFLT); if (mrt == NULL) return ERR_PTR(-ENOENT); iter->mrt = mrt; |
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|
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read_lock(&mrt_lock); |
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return *pos ? ip6mr_vif_seq_idx(net, seq->private, *pos - 1) : SEQ_START_TOKEN; |
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} static void *ip6mr_vif_seq_next(struct seq_file *seq, void *v, loff_t *pos) { struct ipmr_vif_iter *iter = seq->private; |
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struct net *net = seq_file_net(seq); |
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struct mr6_table *mrt = iter->mrt; |
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++*pos; if (v == SEQ_START_TOKEN) |
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return ip6mr_vif_seq_idx(net, iter, 0); |
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while (++iter->ct < mrt->maxvif) { if (!MIF_EXISTS(mrt, iter->ct)) |
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continue; |
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return &mrt->vif6_table[iter->ct]; |
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} return NULL; } static void ip6mr_vif_seq_stop(struct seq_file *seq, void *v) __releases(mrt_lock) { read_unlock(&mrt_lock); } static int ip6mr_vif_seq_show(struct seq_file *seq, void *v) { |
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struct ipmr_vif_iter *iter = seq->private; struct mr6_table *mrt = iter->mrt; |
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if (v == SEQ_START_TOKEN) { seq_puts(seq, "Interface BytesIn PktsIn BytesOut PktsOut Flags "); } else { const struct mif_device *vif = v; const char *name = vif->dev ? vif->dev->name : "none"; seq_printf(seq, |
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"%2td %-10s %8ld %7ld %8ld %7ld %05X ", |
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vif - mrt->vif6_table, |
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name, vif->bytes_in, vif->pkt_in, vif->bytes_out, vif->pkt_out, vif->flags); } return 0; } |
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static const struct seq_operations ip6mr_vif_seq_ops = { |
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.start = ip6mr_vif_seq_start, .next = ip6mr_vif_seq_next, .stop = ip6mr_vif_seq_stop, .show = ip6mr_vif_seq_show, }; static int ip6mr_vif_open(struct inode *inode, struct file *file) { |
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return seq_open_net(inode, file, &ip6mr_vif_seq_ops, sizeof(struct ipmr_vif_iter)); |
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} |
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static const struct file_operations ip6mr_vif_fops = { |
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.owner = THIS_MODULE, .open = ip6mr_vif_open, .read = seq_read, .llseek = seq_lseek, |
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.release = seq_release_net, |
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}; static void *ipmr_mfc_seq_start(struct seq_file *seq, loff_t *pos) { |
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struct ipmr_mfc_iter *it = seq->private; |
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struct net *net = seq_file_net(seq); |
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struct mr6_table *mrt; |
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mrt = ip6mr_get_table(net, RT6_TABLE_DFLT); if (mrt == NULL) return ERR_PTR(-ENOENT); it->mrt = mrt; |
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return *pos ? ipmr_mfc_seq_idx(net, seq->private, *pos - 1) : SEQ_START_TOKEN; |
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} static void *ipmr_mfc_seq_next(struct seq_file *seq, void *v, loff_t *pos) { struct mfc6_cache *mfc = v; struct ipmr_mfc_iter *it = seq->private; |
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struct net *net = seq_file_net(seq); |
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struct mr6_table *mrt = it->mrt; |
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++*pos; if (v == SEQ_START_TOKEN) |
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return ipmr_mfc_seq_idx(net, seq->private, 0); |
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|
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if (mfc->list.next != it->cache) return list_entry(mfc->list.next, struct mfc6_cache, list); |
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|
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if (it->cache == &mrt->mfc6_unres_queue) |
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goto end_of_list; |
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BUG_ON(it->cache != &mrt->mfc6_cache_array[it->ct]); |
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while (++it->ct < MFC6_LINES) { |
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500 |
it->cache = &mrt->mfc6_cache_array[it->ct]; |
f30a77842 ipv6: ip6mr: conv... |
501 502 503 |
if (list_empty(it->cache)) continue; return list_first_entry(it->cache, struct mfc6_cache, list); |
7bc570c8b [IPV6] MROUTE: Su... |
504 505 506 507 |
} /* exhausted cache_array, show unresolved */ read_unlock(&mrt_lock); |
6bd521433 ipv6: ip6mr: move... |
508 |
it->cache = &mrt->mfc6_unres_queue; |
7bc570c8b [IPV6] MROUTE: Su... |
509 510 511 |
it->ct = 0; spin_lock_bh(&mfc_unres_lock); |
f30a77842 ipv6: ip6mr: conv... |
512 513 |
if (!list_empty(it->cache)) return list_first_entry(it->cache, struct mfc6_cache, list); |
7bc570c8b [IPV6] MROUTE: Su... |
514 515 516 517 518 519 520 521 522 523 524 |
end_of_list: spin_unlock_bh(&mfc_unres_lock); it->cache = NULL; return NULL; } static void ipmr_mfc_seq_stop(struct seq_file *seq, void *v) { struct ipmr_mfc_iter *it = seq->private; |
d1db275dd ipv6: ip6mr: supp... |
525 |
struct mr6_table *mrt = it->mrt; |
7bc570c8b [IPV6] MROUTE: Su... |
526 |
|
6bd521433 ipv6: ip6mr: move... |
527 |
if (it->cache == &mrt->mfc6_unres_queue) |
7bc570c8b [IPV6] MROUTE: Su... |
528 |
spin_unlock_bh(&mfc_unres_lock); |
6bd521433 ipv6: ip6mr: move... |
529 |
else if (it->cache == mrt->mfc6_cache_array) |
7bc570c8b [IPV6] MROUTE: Su... |
530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 |
read_unlock(&mrt_lock); } static int ipmr_mfc_seq_show(struct seq_file *seq, void *v) { int n; if (v == SEQ_START_TOKEN) { seq_puts(seq, "Group " "Origin " "Iif Pkts Bytes Wrong Oifs "); } else { const struct mfc6_cache *mfc = v; const struct ipmr_mfc_iter *it = seq->private; |
d1db275dd ipv6: ip6mr: supp... |
546 |
struct mr6_table *mrt = it->mrt; |
7bc570c8b [IPV6] MROUTE: Su... |
547 |
|
999890b21 net: /proc/net/ip... |
548 |
seq_printf(seq, "%pI6 %pI6 %-3hd", |
0c6ce78ab net: replace uses... |
549 |
&mfc->mf6c_mcastgrp, &mfc->mf6c_origin, |
1ea472e2d net: fix /proc/ne... |
550 |
mfc->mf6c_parent); |
7bc570c8b [IPV6] MROUTE: Su... |
551 |
|
6bd521433 ipv6: ip6mr: move... |
552 |
if (it->cache != &mrt->mfc6_unres_queue) { |
1ea472e2d net: fix /proc/ne... |
553 554 555 556 |
seq_printf(seq, " %8lu %8lu %8lu", mfc->mfc_un.res.pkt, mfc->mfc_un.res.bytes, mfc->mfc_un.res.wrong_if); |
7bc570c8b [IPV6] MROUTE: Su... |
557 558 |
for (n = mfc->mfc_un.res.minvif; n < mfc->mfc_un.res.maxvif; n++) { |
6bd521433 ipv6: ip6mr: move... |
559 |
if (MIF_EXISTS(mrt, n) && |
7bc570c8b [IPV6] MROUTE: Su... |
560 561 562 563 564 |
mfc->mfc_un.res.ttls[n] < 255) seq_printf(seq, " %2d:%-3d", n, mfc->mfc_un.res.ttls[n]); } |
1ea472e2d net: fix /proc/ne... |
565 566 567 568 569 |
} else { /* unresolved mfc_caches don't contain * pkt, bytes and wrong_if values */ seq_printf(seq, " %8lu %8lu %8lu", 0ul, 0ul, 0ul); |
7bc570c8b [IPV6] MROUTE: Su... |
570 571 572 573 574 575 |
} seq_putc(seq, ' '); } return 0; } |
88e9d34c7 seq_file: constif... |
576 |
static const struct seq_operations ipmr_mfc_seq_ops = { |
7bc570c8b [IPV6] MROUTE: Su... |
577 578 579 580 581 582 583 584 |
.start = ipmr_mfc_seq_start, .next = ipmr_mfc_seq_next, .stop = ipmr_mfc_seq_stop, .show = ipmr_mfc_seq_show, }; static int ipmr_mfc_open(struct inode *inode, struct file *file) { |
8b90fc7e5 netns: ip6mr: dec... |
585 586 |
return seq_open_net(inode, file, &ipmr_mfc_seq_ops, sizeof(struct ipmr_mfc_iter)); |
7bc570c8b [IPV6] MROUTE: Su... |
587 |
} |
5ca1b998d net: file_operati... |
588 |
static const struct file_operations ip6mr_mfc_fops = { |
7bc570c8b [IPV6] MROUTE: Su... |
589 590 591 592 |
.owner = THIS_MODULE, .open = ipmr_mfc_open, .read = seq_read, .llseek = seq_lseek, |
8b90fc7e5 netns: ip6mr: dec... |
593 |
.release = seq_release_net, |
7bc570c8b [IPV6] MROUTE: Su... |
594 595 |
}; #endif |
14fb64e1f [IPV6] MROUTE: Su... |
596 |
#ifdef CONFIG_IPV6_PIMSM_V2 |
14fb64e1f [IPV6] MROUTE: Su... |
597 598 599 600 601 602 |
static int pim6_rcv(struct sk_buff *skb) { struct pimreghdr *pim; struct ipv6hdr *encap; struct net_device *reg_dev = NULL; |
8229efdae netns: ip6mr: ena... |
603 |
struct net *net = dev_net(skb->dev); |
d1db275dd ipv6: ip6mr: supp... |
604 |
struct mr6_table *mrt; |
4c9483b2f ipv6: Convert to ... |
605 606 607 |
struct flowi6 fl6 = { .flowi6_iif = skb->dev->ifindex, .flowi6_mark = skb->mark, |
d1db275dd ipv6: ip6mr: supp... |
608 609 |
}; int reg_vif_num; |
14fb64e1f [IPV6] MROUTE: Su... |
610 611 612 613 614 615 616 |
if (!pskb_may_pull(skb, sizeof(*pim) + sizeof(*encap))) goto drop; pim = (struct pimreghdr *)skb_transport_header(skb); if (pim->type != ((PIM_VERSION << 4) | PIM_REGISTER) || (pim->flags & PIM_NULL_REGISTER) || |
1d6e55f19 IPv6: Fix multica... |
617 618 619 |
(csum_ipv6_magic(&ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr, sizeof(*pim), IPPROTO_PIM, csum_partial((void *)pim, sizeof(*pim), 0)) && |
ec6b486fa ipv6: result of c... |
620 |
csum_fold(skb_checksum(skb, 0, skb->len, 0)))) |
14fb64e1f [IPV6] MROUTE: Su... |
621 622 623 624 625 626 627 628 629 630 |
goto drop; /* check if the inner packet is destined to mcast group */ encap = (struct ipv6hdr *)(skb_transport_header(skb) + sizeof(*pim)); if (!ipv6_addr_is_multicast(&encap->daddr) || encap->payload_len == 0 || ntohs(encap->payload_len) + sizeof(*pim) > skb->len) goto drop; |
4c9483b2f ipv6: Convert to ... |
631 |
if (ip6mr_fib_lookup(net, &fl6, &mrt) < 0) |
d1db275dd ipv6: ip6mr: supp... |
632 633 |
goto drop; reg_vif_num = mrt->mroute_reg_vif_num; |
14fb64e1f [IPV6] MROUTE: Su... |
634 635 |
read_lock(&mrt_lock); if (reg_vif_num >= 0) |
6bd521433 ipv6: ip6mr: move... |
636 |
reg_dev = mrt->vif6_table[reg_vif_num].dev; |
14fb64e1f [IPV6] MROUTE: Su... |
637 638 639 640 641 642 643 644 645 646 |
if (reg_dev) dev_hold(reg_dev); read_unlock(&mrt_lock); if (reg_dev == NULL) goto drop; skb->mac_header = skb->network_header; skb_pull(skb, (u8 *)encap - skb->data); skb_reset_network_header(skb); |
1d6e55f19 IPv6: Fix multica... |
647 |
skb->protocol = htons(ETH_P_IPV6); |
3e49e6d52 net: use CHECKSUM... |
648 |
skb->ip_summed = CHECKSUM_NONE; |
14fb64e1f [IPV6] MROUTE: Su... |
649 |
skb->pkt_type = PACKET_HOST; |
d19d56ddc net: Introduce sk... |
650 651 |
skb_tunnel_rx(skb, reg_dev); |
caf586e5f net: add a core n... |
652 |
netif_rx(skb); |
8990f468a net: rx_dropped a... |
653 |
|
14fb64e1f [IPV6] MROUTE: Su... |
654 655 656 657 658 659 |
dev_put(reg_dev); return 0; drop: kfree_skb(skb); return 0; } |
41135cc83 net: constify str... |
660 |
static const struct inet6_protocol pim6_protocol = { |
14fb64e1f [IPV6] MROUTE: Su... |
661 662 663 664 |
.handler = pim6_rcv, }; /* Service routines creating virtual interfaces: PIMREG */ |
6fef4c0c8 netdev: convert p... |
665 666 |
static netdev_tx_t reg_vif_xmit(struct sk_buff *skb, struct net_device *dev) |
14fb64e1f [IPV6] MROUTE: Su... |
667 |
{ |
8229efdae netns: ip6mr: ena... |
668 |
struct net *net = dev_net(dev); |
d1db275dd ipv6: ip6mr: supp... |
669 |
struct mr6_table *mrt; |
4c9483b2f ipv6: Convert to ... |
670 671 672 673 |
struct flowi6 fl6 = { .flowi6_oif = dev->ifindex, .flowi6_iif = skb->skb_iif, .flowi6_mark = skb->mark, |
d1db275dd ipv6: ip6mr: supp... |
674 675 |
}; int err; |
4c9483b2f ipv6: Convert to ... |
676 |
err = ip6mr_fib_lookup(net, &fl6, &mrt); |
67928c404 ipv6-multicast: F... |
677 678 |
if (err < 0) { kfree_skb(skb); |
d1db275dd ipv6: ip6mr: supp... |
679 |
return err; |
67928c404 ipv6-multicast: F... |
680 |
} |
8229efdae netns: ip6mr: ena... |
681 |
|
14fb64e1f [IPV6] MROUTE: Su... |
682 |
read_lock(&mrt_lock); |
dc58c78c0 ip6mr: Use on-dev... |
683 684 |
dev->stats.tx_bytes += skb->len; dev->stats.tx_packets++; |
6bd521433 ipv6: ip6mr: move... |
685 |
ip6mr_cache_report(mrt, skb, mrt->mroute_reg_vif_num, MRT6MSG_WHOLEPKT); |
14fb64e1f [IPV6] MROUTE: Su... |
686 687 |
read_unlock(&mrt_lock); kfree_skb(skb); |
6ed106549 net: use NETDEV_T... |
688 |
return NETDEV_TX_OK; |
14fb64e1f [IPV6] MROUTE: Su... |
689 |
} |
007c3838d ipmr: convert ipm... |
690 691 692 |
static const struct net_device_ops reg_vif_netdev_ops = { .ndo_start_xmit = reg_vif_xmit, }; |
14fb64e1f [IPV6] MROUTE: Su... |
693 694 695 696 697 |
static void reg_vif_setup(struct net_device *dev) { dev->type = ARPHRD_PIMREG; dev->mtu = 1500 - sizeof(struct ipv6hdr) - 8; dev->flags = IFF_NOARP; |
007c3838d ipmr: convert ipm... |
698 |
dev->netdev_ops = ®_vif_netdev_ops; |
14fb64e1f [IPV6] MROUTE: Su... |
699 |
dev->destructor = free_netdev; |
403dbb97f PIM-SM: namespace... |
700 |
dev->features |= NETIF_F_NETNS_LOCAL; |
14fb64e1f [IPV6] MROUTE: Su... |
701 |
} |
d1db275dd ipv6: ip6mr: supp... |
702 |
static struct net_device *ip6mr_reg_vif(struct net *net, struct mr6_table *mrt) |
14fb64e1f [IPV6] MROUTE: Su... |
703 704 |
{ struct net_device *dev; |
d1db275dd ipv6: ip6mr: supp... |
705 706 707 708 709 710 |
char name[IFNAMSIZ]; if (mrt->id == RT6_TABLE_DFLT) sprintf(name, "pim6reg"); else sprintf(name, "pim6reg%u", mrt->id); |
14fb64e1f [IPV6] MROUTE: Su... |
711 |
|
d1db275dd ipv6: ip6mr: supp... |
712 |
dev = alloc_netdev(0, name, reg_vif_setup); |
14fb64e1f [IPV6] MROUTE: Su... |
713 714 |
if (dev == NULL) return NULL; |
8229efdae netns: ip6mr: ena... |
715 |
dev_net_set(dev, net); |
14fb64e1f [IPV6] MROUTE: Su... |
716 717 718 719 720 |
if (register_netdevice(dev)) { free_netdev(dev); return NULL; } dev->iflink = 0; |
14fb64e1f [IPV6] MROUTE: Su... |
721 722 |
if (dev_open(dev)) goto failure; |
7af3db78a ipv6: Fix using a... |
723 |
dev_hold(dev); |
14fb64e1f [IPV6] MROUTE: Su... |
724 725 726 727 728 729 730 731 732 733 734 |
return dev; failure: /* allow the register to be completed before unregistering. */ rtnl_unlock(); rtnl_lock(); unregister_netdevice(dev); return NULL; } #endif |
7bc570c8b [IPV6] MROUTE: Su... |
735 736 737 |
/* * Delete a VIF entry */ |
6bd521433 ipv6: ip6mr: move... |
738 |
static int mif6_delete(struct mr6_table *mrt, int vifi, struct list_head *head) |
7bc570c8b [IPV6] MROUTE: Su... |
739 740 741 |
{ struct mif_device *v; struct net_device *dev; |
1d6e55f19 IPv6: Fix multica... |
742 |
struct inet6_dev *in6_dev; |
6bd521433 ipv6: ip6mr: move... |
743 744 |
if (vifi < 0 || vifi >= mrt->maxvif) |
7bc570c8b [IPV6] MROUTE: Su... |
745 |
return -EADDRNOTAVAIL; |
6bd521433 ipv6: ip6mr: move... |
746 |
v = &mrt->vif6_table[vifi]; |
7bc570c8b [IPV6] MROUTE: Su... |
747 748 749 750 751 752 753 754 755 |
write_lock_bh(&mrt_lock); dev = v->dev; v->dev = NULL; if (!dev) { write_unlock_bh(&mrt_lock); return -EADDRNOTAVAIL; } |
14fb64e1f [IPV6] MROUTE: Su... |
756 |
#ifdef CONFIG_IPV6_PIMSM_V2 |
6bd521433 ipv6: ip6mr: move... |
757 758 |
if (vifi == mrt->mroute_reg_vif_num) mrt->mroute_reg_vif_num = -1; |
14fb64e1f [IPV6] MROUTE: Su... |
759 |
#endif |
6bd521433 ipv6: ip6mr: move... |
760 |
if (vifi + 1 == mrt->maxvif) { |
7bc570c8b [IPV6] MROUTE: Su... |
761 762 |
int tmp; for (tmp = vifi - 1; tmp >= 0; tmp--) { |
6bd521433 ipv6: ip6mr: move... |
763 |
if (MIF_EXISTS(mrt, tmp)) |
7bc570c8b [IPV6] MROUTE: Su... |
764 765 |
break; } |
6bd521433 ipv6: ip6mr: move... |
766 |
mrt->maxvif = tmp + 1; |
7bc570c8b [IPV6] MROUTE: Su... |
767 768 769 770 771 |
} write_unlock_bh(&mrt_lock); dev_set_allmulti(dev, -1); |
1d6e55f19 IPv6: Fix multica... |
772 773 774 |
in6_dev = __in6_dev_get(dev); if (in6_dev) in6_dev->cnf.mc_forwarding--; |
7bc570c8b [IPV6] MROUTE: Su... |
775 |
if (v->flags & MIFF_REGISTER) |
c871e664e ip6mr: Optimize m... |
776 |
unregister_netdevice_queue(dev, head); |
7bc570c8b [IPV6] MROUTE: Su... |
777 778 779 780 |
dev_put(dev); return 0; } |
58701ad41 netns: ip6mr: sto... |
781 782 |
static inline void ip6mr_cache_free(struct mfc6_cache *c) { |
58701ad41 netns: ip6mr: sto... |
783 784 |
kmem_cache_free(mrt_cachep, c); } |
7bc570c8b [IPV6] MROUTE: Su... |
785 786 787 |
/* Destroy an unresolved cache entry, killing queued skbs and reporting error to netlink readers. */ |
6bd521433 ipv6: ip6mr: move... |
788 |
static void ip6mr_destroy_unres(struct mr6_table *mrt, struct mfc6_cache *c) |
7bc570c8b [IPV6] MROUTE: Su... |
789 |
{ |
6bd521433 ipv6: ip6mr: move... |
790 |
struct net *net = read_pnet(&mrt->net); |
7bc570c8b [IPV6] MROUTE: Su... |
791 |
struct sk_buff *skb; |
6bd521433 ipv6: ip6mr: move... |
792 |
atomic_dec(&mrt->cache_resolve_queue_len); |
7bc570c8b [IPV6] MROUTE: Su... |
793 794 795 796 797 798 799 800 |
while((skb = skb_dequeue(&c->mfc_un.unres.unresolved)) != NULL) { if (ipv6_hdr(skb)->version == 0) { struct nlmsghdr *nlh = (struct nlmsghdr *)skb_pull(skb, sizeof(struct ipv6hdr)); nlh->nlmsg_type = NLMSG_ERROR; nlh->nlmsg_len = NLMSG_LENGTH(sizeof(struct nlmsgerr)); skb_trim(skb, nlh->nlmsg_len); ((struct nlmsgerr *)NLMSG_DATA(nlh))->error = -ETIMEDOUT; |
8229efdae netns: ip6mr: ena... |
801 |
rtnl_unicast(skb, net, NETLINK_CB(skb).pid); |
7bc570c8b [IPV6] MROUTE: Su... |
802 803 804 |
} else kfree_skb(skb); } |
58701ad41 netns: ip6mr: sto... |
805 |
ip6mr_cache_free(c); |
7bc570c8b [IPV6] MROUTE: Su... |
806 |
} |
c476efbcd ipv6: ip6mr: move... |
807 |
/* Timer process for all the unresolved queue. */ |
7bc570c8b [IPV6] MROUTE: Su... |
808 |
|
6bd521433 ipv6: ip6mr: move... |
809 |
static void ipmr_do_expire_process(struct mr6_table *mrt) |
7bc570c8b [IPV6] MROUTE: Su... |
810 811 812 |
{ unsigned long now = jiffies; unsigned long expires = 10 * HZ; |
f30a77842 ipv6: ip6mr: conv... |
813 |
struct mfc6_cache *c, *next; |
7bc570c8b [IPV6] MROUTE: Su... |
814 |
|
6bd521433 ipv6: ip6mr: move... |
815 |
list_for_each_entry_safe(c, next, &mrt->mfc6_unres_queue, list) { |
7bc570c8b [IPV6] MROUTE: Su... |
816 817 818 819 820 |
if (time_after(c->mfc_un.unres.expires, now)) { /* not yet... */ unsigned long interval = c->mfc_un.unres.expires - now; if (interval < expires) expires = interval; |
7bc570c8b [IPV6] MROUTE: Su... |
821 822 |
continue; } |
f30a77842 ipv6: ip6mr: conv... |
823 |
list_del(&c->list); |
6bd521433 ipv6: ip6mr: move... |
824 |
ip6mr_destroy_unres(mrt, c); |
7bc570c8b [IPV6] MROUTE: Su... |
825 |
} |
6bd521433 ipv6: ip6mr: move... |
826 827 |
if (!list_empty(&mrt->mfc6_unres_queue)) mod_timer(&mrt->ipmr_expire_timer, jiffies + expires); |
7bc570c8b [IPV6] MROUTE: Su... |
828 |
} |
c476efbcd ipv6: ip6mr: move... |
829 |
static void ipmr_expire_process(unsigned long arg) |
7bc570c8b [IPV6] MROUTE: Su... |
830 |
{ |
6bd521433 ipv6: ip6mr: move... |
831 |
struct mr6_table *mrt = (struct mr6_table *)arg; |
c476efbcd ipv6: ip6mr: move... |
832 |
|
7bc570c8b [IPV6] MROUTE: Su... |
833 |
if (!spin_trylock(&mfc_unres_lock)) { |
6bd521433 ipv6: ip6mr: move... |
834 |
mod_timer(&mrt->ipmr_expire_timer, jiffies + 1); |
7bc570c8b [IPV6] MROUTE: Su... |
835 836 |
return; } |
6bd521433 ipv6: ip6mr: move... |
837 838 |
if (!list_empty(&mrt->mfc6_unres_queue)) ipmr_do_expire_process(mrt); |
7bc570c8b [IPV6] MROUTE: Su... |
839 840 841 842 843 |
spin_unlock(&mfc_unres_lock); } /* Fill oifs list. It is called under write locked mrt_lock. */ |
6bd521433 ipv6: ip6mr: move... |
844 |
static void ip6mr_update_thresholds(struct mr6_table *mrt, struct mfc6_cache *cache, |
b5aa30b19 ipv6: ip6mr: remo... |
845 |
unsigned char *ttls) |
7bc570c8b [IPV6] MROUTE: Su... |
846 847 |
{ int vifi; |
6ac7eb086 [IPV6] MROUTE: Ad... |
848 |
cache->mfc_un.res.minvif = MAXMIFS; |
7bc570c8b [IPV6] MROUTE: Su... |
849 |
cache->mfc_un.res.maxvif = 0; |
6ac7eb086 [IPV6] MROUTE: Ad... |
850 |
memset(cache->mfc_un.res.ttls, 255, MAXMIFS); |
7bc570c8b [IPV6] MROUTE: Su... |
851 |
|
6bd521433 ipv6: ip6mr: move... |
852 853 |
for (vifi = 0; vifi < mrt->maxvif; vifi++) { if (MIF_EXISTS(mrt, vifi) && |
4e16880cb netns: ip6mr: dyn... |
854 |
ttls[vifi] && ttls[vifi] < 255) { |
7bc570c8b [IPV6] MROUTE: Su... |
855 856 857 858 859 860 861 862 |
cache->mfc_un.res.ttls[vifi] = ttls[vifi]; if (cache->mfc_un.res.minvif > vifi) cache->mfc_un.res.minvif = vifi; if (cache->mfc_un.res.maxvif <= vifi) cache->mfc_un.res.maxvif = vifi + 1; } } } |
6bd521433 ipv6: ip6mr: move... |
863 864 |
static int mif6_add(struct net *net, struct mr6_table *mrt, struct mif6ctl *vifc, int mrtsock) |
7bc570c8b [IPV6] MROUTE: Su... |
865 866 |
{ int vifi = vifc->mif6c_mifi; |
6bd521433 ipv6: ip6mr: move... |
867 |
struct mif_device *v = &mrt->vif6_table[vifi]; |
7bc570c8b [IPV6] MROUTE: Su... |
868 |
struct net_device *dev; |
1d6e55f19 IPv6: Fix multica... |
869 |
struct inet6_dev *in6_dev; |
5ae7b4441 ipv6: Check retur... |
870 |
int err; |
7bc570c8b [IPV6] MROUTE: Su... |
871 872 |
/* Is vif busy ? */ |
6bd521433 ipv6: ip6mr: move... |
873 |
if (MIF_EXISTS(mrt, vifi)) |
7bc570c8b [IPV6] MROUTE: Su... |
874 875 876 |
return -EADDRINUSE; switch (vifc->mif6c_flags) { |
14fb64e1f [IPV6] MROUTE: Su... |
877 878 879 880 881 882 |
#ifdef CONFIG_IPV6_PIMSM_V2 case MIFF_REGISTER: /* * Special Purpose VIF in PIM * All the packets will be sent to the daemon */ |
6bd521433 ipv6: ip6mr: move... |
883 |
if (mrt->mroute_reg_vif_num >= 0) |
14fb64e1f [IPV6] MROUTE: Su... |
884 |
return -EADDRINUSE; |
d1db275dd ipv6: ip6mr: supp... |
885 |
dev = ip6mr_reg_vif(net, mrt); |
14fb64e1f [IPV6] MROUTE: Su... |
886 887 |
if (!dev) return -ENOBUFS; |
5ae7b4441 ipv6: Check retur... |
888 889 890 |
err = dev_set_allmulti(dev, 1); if (err) { unregister_netdevice(dev); |
7af3db78a ipv6: Fix using a... |
891 |
dev_put(dev); |
5ae7b4441 ipv6: Check retur... |
892 893 |
return err; } |
14fb64e1f [IPV6] MROUTE: Su... |
894 895 |
break; #endif |
7bc570c8b [IPV6] MROUTE: Su... |
896 |
case 0: |
8229efdae netns: ip6mr: ena... |
897 |
dev = dev_get_by_index(net, vifc->mif6c_pifi); |
7bc570c8b [IPV6] MROUTE: Su... |
898 899 |
if (!dev) return -EADDRNOTAVAIL; |
5ae7b4441 ipv6: Check retur... |
900 |
err = dev_set_allmulti(dev, 1); |
7af3db78a ipv6: Fix using a... |
901 902 |
if (err) { dev_put(dev); |
5ae7b4441 ipv6: Check retur... |
903 |
return err; |
7af3db78a ipv6: Fix using a... |
904 |
} |
7bc570c8b [IPV6] MROUTE: Su... |
905 906 907 908 |
break; default: return -EINVAL; } |
1d6e55f19 IPv6: Fix multica... |
909 910 911 |
in6_dev = __in6_dev_get(dev); if (in6_dev) in6_dev->cnf.mc_forwarding++; |
7bc570c8b [IPV6] MROUTE: Su... |
912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 |
/* * Fill in the VIF structures */ v->rate_limit = vifc->vifc_rate_limit; v->flags = vifc->mif6c_flags; if (!mrtsock) v->flags |= VIFF_STATIC; v->threshold = vifc->vifc_threshold; v->bytes_in = 0; v->bytes_out = 0; v->pkt_in = 0; v->pkt_out = 0; v->link = dev->ifindex; if (v->flags & MIFF_REGISTER) v->link = dev->iflink; /* And finish update writing critical data */ write_lock_bh(&mrt_lock); |
7bc570c8b [IPV6] MROUTE: Su... |
930 |
v->dev = dev; |
14fb64e1f [IPV6] MROUTE: Su... |
931 932 |
#ifdef CONFIG_IPV6_PIMSM_V2 if (v->flags & MIFF_REGISTER) |
6bd521433 ipv6: ip6mr: move... |
933 |
mrt->mroute_reg_vif_num = vifi; |
14fb64e1f [IPV6] MROUTE: Su... |
934 |
#endif |
6bd521433 ipv6: ip6mr: move... |
935 936 |
if (vifi + 1 > mrt->maxvif) mrt->maxvif = vifi + 1; |
7bc570c8b [IPV6] MROUTE: Su... |
937 938 939 |
write_unlock_bh(&mrt_lock); return 0; } |
6bd521433 ipv6: ip6mr: move... |
940 |
static struct mfc6_cache *ip6mr_cache_find(struct mr6_table *mrt, |
b71d1d426 inet: constify ip... |
941 942 |
const struct in6_addr *origin, const struct in6_addr *mcastgrp) |
7bc570c8b [IPV6] MROUTE: Su... |
943 944 945 |
{ int line = MFC6_HASH(mcastgrp, origin); struct mfc6_cache *c; |
6bd521433 ipv6: ip6mr: move... |
946 |
list_for_each_entry(c, &mrt->mfc6_cache_array[line], list) { |
7bc570c8b [IPV6] MROUTE: Su... |
947 948 |
if (ipv6_addr_equal(&c->mf6c_origin, origin) && ipv6_addr_equal(&c->mf6c_mcastgrp, mcastgrp)) |
f30a77842 ipv6: ip6mr: conv... |
949 |
return c; |
7bc570c8b [IPV6] MROUTE: Su... |
950 |
} |
f30a77842 ipv6: ip6mr: conv... |
951 |
return NULL; |
7bc570c8b [IPV6] MROUTE: Su... |
952 953 954 955 956 |
} /* * Allocate a multicast cache entry */ |
b5aa30b19 ipv6: ip6mr: remo... |
957 |
static struct mfc6_cache *ip6mr_cache_alloc(void) |
7bc570c8b [IPV6] MROUTE: Su... |
958 |
{ |
36cbac590 net/ipv6/ip6mr.c:... |
959 |
struct mfc6_cache *c = kmem_cache_zalloc(mrt_cachep, GFP_KERNEL); |
7bc570c8b [IPV6] MROUTE: Su... |
960 961 |
if (c == NULL) return NULL; |
6ac7eb086 [IPV6] MROUTE: Ad... |
962 |
c->mfc_un.res.minvif = MAXMIFS; |
7bc570c8b [IPV6] MROUTE: Su... |
963 964 |
return c; } |
b5aa30b19 ipv6: ip6mr: remo... |
965 |
static struct mfc6_cache *ip6mr_cache_alloc_unres(void) |
7bc570c8b [IPV6] MROUTE: Su... |
966 |
{ |
36cbac590 net/ipv6/ip6mr.c:... |
967 |
struct mfc6_cache *c = kmem_cache_zalloc(mrt_cachep, GFP_ATOMIC); |
7bc570c8b [IPV6] MROUTE: Su... |
968 969 |
if (c == NULL) return NULL; |
7bc570c8b [IPV6] MROUTE: Su... |
970 971 972 973 974 975 976 977 |
skb_queue_head_init(&c->mfc_un.unres.unresolved); c->mfc_un.unres.expires = jiffies + 10 * HZ; return c; } /* * A cache entry has gone into a resolved state from queued */ |
6bd521433 ipv6: ip6mr: move... |
978 979 |
static void ip6mr_cache_resolve(struct net *net, struct mr6_table *mrt, struct mfc6_cache *uc, struct mfc6_cache *c) |
7bc570c8b [IPV6] MROUTE: Su... |
980 981 982 983 984 985 986 987 988 |
{ struct sk_buff *skb; /* * Play the pending entries through our router */ while((skb = __skb_dequeue(&uc->mfc_un.unres.unresolved))) { if (ipv6_hdr(skb)->version == 0) { |
7bc570c8b [IPV6] MROUTE: Su... |
989 |
struct nlmsghdr *nlh = (struct nlmsghdr *)skb_pull(skb, sizeof(struct ipv6hdr)); |
5b285cac3 ipv6: ip6mr: add ... |
990 |
if (__ip6mr_fill_mroute(mrt, skb, c, NLMSG_DATA(nlh)) > 0) { |
549e028d0 [IPV6] MROUTE: Us... |
991 |
nlh->nlmsg_len = skb_tail_pointer(skb) - (u8 *)nlh; |
7bc570c8b [IPV6] MROUTE: Su... |
992 993 994 995 996 997 |
} else { nlh->nlmsg_type = NLMSG_ERROR; nlh->nlmsg_len = NLMSG_LENGTH(sizeof(struct nlmsgerr)); skb_trim(skb, nlh->nlmsg_len); ((struct nlmsgerr *)NLMSG_DATA(nlh))->error = -EMSGSIZE; } |
ddc3731fc ipv6: ignore rtnl... |
998 |
rtnl_unicast(skb, net, NETLINK_CB(skb).pid); |
7bc570c8b [IPV6] MROUTE: Su... |
999 |
} else |
6bd521433 ipv6: ip6mr: move... |
1000 |
ip6_mr_forward(net, mrt, skb, c); |
7bc570c8b [IPV6] MROUTE: Su... |
1001 1002 1003 1004 1005 1006 1007 1008 1009 |
} } /* * Bounce a cache query up to pim6sd. We could use netlink for this but pim6sd * expects the following bizarre scheme. * * Called under mrt_lock. */ |
6bd521433 ipv6: ip6mr: move... |
1010 1011 |
static int ip6mr_cache_report(struct mr6_table *mrt, struct sk_buff *pkt, mifi_t mifi, int assert) |
7bc570c8b [IPV6] MROUTE: Su... |
1012 1013 1014 1015 |
{ struct sk_buff *skb; struct mrt6msg *msg; int ret; |
14fb64e1f [IPV6] MROUTE: Su... |
1016 1017 1018 1019 1020 1021 1022 |
#ifdef CONFIG_IPV6_PIMSM_V2 if (assert == MRT6MSG_WHOLEPKT) skb = skb_realloc_headroom(pkt, -skb_network_offset(pkt) +sizeof(*msg)); else #endif skb = alloc_skb(sizeof(struct ipv6hdr) + sizeof(*msg), GFP_ATOMIC); |
7bc570c8b [IPV6] MROUTE: Su... |
1023 1024 1025 1026 1027 1028 1029 1030 |
if (!skb) return -ENOBUFS; /* I suppose that internal messages * do not require checksums */ skb->ip_summed = CHECKSUM_UNNECESSARY; |
14fb64e1f [IPV6] MROUTE: Su... |
1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 |
#ifdef CONFIG_IPV6_PIMSM_V2 if (assert == MRT6MSG_WHOLEPKT) { /* Ugly, but we have no choice with this interface. Duplicate old header, fix length etc. And all this only to mangle msg->im6_msgtype and to set msg->im6_mbz to "mbz" :-) */ skb_push(skb, -skb_network_offset(pkt)); skb_push(skb, sizeof(*msg)); skb_reset_transport_header(skb); msg = (struct mrt6msg *)skb_transport_header(skb); msg->im6_mbz = 0; msg->im6_msgtype = MRT6MSG_WHOLEPKT; |
6bd521433 ipv6: ip6mr: move... |
1045 |
msg->im6_mif = mrt->mroute_reg_vif_num; |
14fb64e1f [IPV6] MROUTE: Su... |
1046 |
msg->im6_pad = 0; |
4e3fd7a06 net: remove ipv6_... |
1047 1048 |
msg->im6_src = ipv6_hdr(pkt)->saddr; msg->im6_dst = ipv6_hdr(pkt)->daddr; |
14fb64e1f [IPV6] MROUTE: Su... |
1049 1050 1051 1052 1053 |
skb->ip_summed = CHECKSUM_UNNECESSARY; } else #endif { |
7bc570c8b [IPV6] MROUTE: Su... |
1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 |
/* * Copy the IP header */ skb_put(skb, sizeof(struct ipv6hdr)); skb_reset_network_header(skb); skb_copy_to_linear_data(skb, ipv6_hdr(pkt), sizeof(struct ipv6hdr)); /* * Add our header */ skb_put(skb, sizeof(*msg)); skb_reset_transport_header(skb); msg = (struct mrt6msg *)skb_transport_header(skb); msg->im6_mbz = 0; msg->im6_msgtype = assert; |
6ac7eb086 [IPV6] MROUTE: Ad... |
1071 |
msg->im6_mif = mifi; |
7bc570c8b [IPV6] MROUTE: Su... |
1072 |
msg->im6_pad = 0; |
4e3fd7a06 net: remove ipv6_... |
1073 1074 |
msg->im6_src = ipv6_hdr(pkt)->saddr; msg->im6_dst = ipv6_hdr(pkt)->daddr; |
7bc570c8b [IPV6] MROUTE: Su... |
1075 |
|
adf30907d net: skb->dst acc... |
1076 |
skb_dst_set(skb, dst_clone(skb_dst(pkt))); |
7bc570c8b [IPV6] MROUTE: Su... |
1077 |
skb->ip_summed = CHECKSUM_UNNECESSARY; |
14fb64e1f [IPV6] MROUTE: Su... |
1078 |
} |
7bc570c8b [IPV6] MROUTE: Su... |
1079 |
|
6bd521433 ipv6: ip6mr: move... |
1080 |
if (mrt->mroute6_sk == NULL) { |
7bc570c8b [IPV6] MROUTE: Su... |
1081 1082 1083 1084 1085 1086 1087 |
kfree_skb(skb); return -EINVAL; } /* * Deliver to user space multicast routing algorithms */ |
6bd521433 ipv6: ip6mr: move... |
1088 |
ret = sock_queue_rcv_skb(mrt->mroute6_sk, skb); |
bd91b8bf3 netns: ip6mr: all... |
1089 |
if (ret < 0) { |
7bc570c8b [IPV6] MROUTE: Su... |
1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 |
if (net_ratelimit()) printk(KERN_WARNING "mroute6: pending queue full, dropping entries. "); kfree_skb(skb); } return ret; } /* * Queue a packet for resolution. It gets locked cache entry! */ static int |
6bd521433 ipv6: ip6mr: move... |
1104 |
ip6mr_cache_unresolved(struct mr6_table *mrt, mifi_t mifi, struct sk_buff *skb) |
7bc570c8b [IPV6] MROUTE: Su... |
1105 |
{ |
f30a77842 ipv6: ip6mr: conv... |
1106 |
bool found = false; |
7bc570c8b [IPV6] MROUTE: Su... |
1107 1108 1109 1110 |
int err; struct mfc6_cache *c; spin_lock_bh(&mfc_unres_lock); |
6bd521433 ipv6: ip6mr: move... |
1111 |
list_for_each_entry(c, &mrt->mfc6_unres_queue, list) { |
c476efbcd ipv6: ip6mr: move... |
1112 |
if (ipv6_addr_equal(&c->mf6c_mcastgrp, &ipv6_hdr(skb)->daddr) && |
f30a77842 ipv6: ip6mr: conv... |
1113 1114 |
ipv6_addr_equal(&c->mf6c_origin, &ipv6_hdr(skb)->saddr)) { found = true; |
7bc570c8b [IPV6] MROUTE: Su... |
1115 |
break; |
f30a77842 ipv6: ip6mr: conv... |
1116 |
} |
7bc570c8b [IPV6] MROUTE: Su... |
1117 |
} |
f30a77842 ipv6: ip6mr: conv... |
1118 |
if (!found) { |
7bc570c8b [IPV6] MROUTE: Su... |
1119 1120 1121 |
/* * Create a new entry if allowable */ |
6bd521433 ipv6: ip6mr: move... |
1122 |
if (atomic_read(&mrt->cache_resolve_queue_len) >= 10 || |
b5aa30b19 ipv6: ip6mr: remo... |
1123 |
(c = ip6mr_cache_alloc_unres()) == NULL) { |
7bc570c8b [IPV6] MROUTE: Su... |
1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 |
spin_unlock_bh(&mfc_unres_lock); kfree_skb(skb); return -ENOBUFS; } /* * Fill in the new cache entry */ c->mf6c_parent = -1; c->mf6c_origin = ipv6_hdr(skb)->saddr; c->mf6c_mcastgrp = ipv6_hdr(skb)->daddr; /* * Reflect first query at pim6sd */ |
6bd521433 ipv6: ip6mr: move... |
1140 |
err = ip6mr_cache_report(mrt, skb, mifi, MRT6MSG_NOCACHE); |
8229efdae netns: ip6mr: ena... |
1141 |
if (err < 0) { |
7bc570c8b [IPV6] MROUTE: Su... |
1142 1143 1144 1145 |
/* If the report failed throw the cache entry out - Brad Parker */ spin_unlock_bh(&mfc_unres_lock); |
58701ad41 netns: ip6mr: sto... |
1146 |
ip6mr_cache_free(c); |
7bc570c8b [IPV6] MROUTE: Su... |
1147 1148 1149 |
kfree_skb(skb); return err; } |
6bd521433 ipv6: ip6mr: move... |
1150 1151 |
atomic_inc(&mrt->cache_resolve_queue_len); list_add(&c->list, &mrt->mfc6_unres_queue); |
7bc570c8b [IPV6] MROUTE: Su... |
1152 |
|
6bd521433 ipv6: ip6mr: move... |
1153 |
ipmr_do_expire_process(mrt); |
7bc570c8b [IPV6] MROUTE: Su... |
1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 |
} /* * See if we can append the packet */ if (c->mfc_un.unres.unresolved.qlen > 3) { kfree_skb(skb); err = -ENOBUFS; } else { skb_queue_tail(&c->mfc_un.unres.unresolved, skb); err = 0; } spin_unlock_bh(&mfc_unres_lock); return err; } /* * MFC6 cache manipulation by user space */ |
6bd521433 ipv6: ip6mr: move... |
1174 |
static int ip6mr_mfc_delete(struct mr6_table *mrt, struct mf6cctl *mfc) |
7bc570c8b [IPV6] MROUTE: Su... |
1175 1176 |
{ int line; |
f30a77842 ipv6: ip6mr: conv... |
1177 |
struct mfc6_cache *c, *next; |
7bc570c8b [IPV6] MROUTE: Su... |
1178 1179 |
line = MFC6_HASH(&mfc->mf6cc_mcastgrp.sin6_addr, &mfc->mf6cc_origin.sin6_addr); |
6bd521433 ipv6: ip6mr: move... |
1180 |
list_for_each_entry_safe(c, next, &mrt->mfc6_cache_array[line], list) { |
7bc570c8b [IPV6] MROUTE: Su... |
1181 1182 1183 |
if (ipv6_addr_equal(&c->mf6c_origin, &mfc->mf6cc_origin.sin6_addr) && ipv6_addr_equal(&c->mf6c_mcastgrp, &mfc->mf6cc_mcastgrp.sin6_addr)) { write_lock_bh(&mrt_lock); |
f30a77842 ipv6: ip6mr: conv... |
1184 |
list_del(&c->list); |
7bc570c8b [IPV6] MROUTE: Su... |
1185 |
write_unlock_bh(&mrt_lock); |
58701ad41 netns: ip6mr: sto... |
1186 |
ip6mr_cache_free(c); |
7bc570c8b [IPV6] MROUTE: Su... |
1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 |
return 0; } } return -ENOENT; } static int ip6mr_device_event(struct notifier_block *this, unsigned long event, void *ptr) { struct net_device *dev = ptr; |
8229efdae netns: ip6mr: ena... |
1197 |
struct net *net = dev_net(dev); |
d1db275dd ipv6: ip6mr: supp... |
1198 |
struct mr6_table *mrt; |
7bc570c8b [IPV6] MROUTE: Su... |
1199 1200 |
struct mif_device *v; int ct; |
c871e664e ip6mr: Optimize m... |
1201 |
LIST_HEAD(list); |
7bc570c8b [IPV6] MROUTE: Su... |
1202 |
|
7bc570c8b [IPV6] MROUTE: Su... |
1203 1204 |
if (event != NETDEV_UNREGISTER) return NOTIFY_DONE; |
d1db275dd ipv6: ip6mr: supp... |
1205 1206 1207 1208 1209 1210 |
ip6mr_for_each_table(mrt, net) { v = &mrt->vif6_table[0]; for (ct = 0; ct < mrt->maxvif; ct++, v++) { if (v->dev == dev) mif6_delete(mrt, ct, &list); } |
7bc570c8b [IPV6] MROUTE: Su... |
1211 |
} |
c871e664e ip6mr: Optimize m... |
1212 |
unregister_netdevice_many(&list); |
7bc570c8b [IPV6] MROUTE: Su... |
1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 |
return NOTIFY_DONE; } static struct notifier_block ip6_mr_notifier = { .notifier_call = ip6mr_device_event }; /* * Setup for IP multicast routing */ |
4e16880cb netns: ip6mr: dyn... |
1223 1224 |
static int __net_init ip6mr_net_init(struct net *net) { |
d1db275dd ipv6: ip6mr: supp... |
1225 |
int err; |
f30a77842 ipv6: ip6mr: conv... |
1226 |
|
d1db275dd ipv6: ip6mr: supp... |
1227 1228 |
err = ip6mr_rules_init(net); if (err < 0) |
4e16880cb netns: ip6mr: dyn... |
1229 |
goto fail; |
8b90fc7e5 netns: ip6mr: dec... |
1230 1231 1232 1233 1234 1235 1236 1237 |
#ifdef CONFIG_PROC_FS err = -ENOMEM; if (!proc_net_fops_create(net, "ip6_mr_vif", 0, &ip6mr_vif_fops)) goto proc_vif_fail; if (!proc_net_fops_create(net, "ip6_mr_cache", 0, &ip6mr_mfc_fops)) goto proc_cache_fail; #endif |
6bd521433 ipv6: ip6mr: move... |
1238 |
|
4a6258a0e netns: ip6mr: dyn... |
1239 |
return 0; |
8b90fc7e5 netns: ip6mr: dec... |
1240 1241 1242 1243 |
#ifdef CONFIG_PROC_FS proc_cache_fail: proc_net_remove(net, "ip6_mr_vif"); proc_vif_fail: |
d1db275dd ipv6: ip6mr: supp... |
1244 |
ip6mr_rules_exit(net); |
8b90fc7e5 netns: ip6mr: dec... |
1245 |
#endif |
4e16880cb netns: ip6mr: dyn... |
1246 1247 1248 1249 1250 1251 |
fail: return err; } static void __net_exit ip6mr_net_exit(struct net *net) { |
8b90fc7e5 netns: ip6mr: dec... |
1252 1253 1254 1255 |
#ifdef CONFIG_PROC_FS proc_net_remove(net, "ip6_mr_cache"); proc_net_remove(net, "ip6_mr_vif"); #endif |
d1db275dd ipv6: ip6mr: supp... |
1256 |
ip6mr_rules_exit(net); |
4e16880cb netns: ip6mr: dyn... |
1257 1258 1259 1260 1261 1262 |
} static struct pernet_operations ip6mr_net_ops = { .init = ip6mr_net_init, .exit = ip6mr_net_exit, }; |
623d1a1af ipv6: Do cleanup ... |
1263 |
int __init ip6_mr_init(void) |
7bc570c8b [IPV6] MROUTE: Su... |
1264 |
{ |
623d1a1af ipv6: Do cleanup ... |
1265 |
int err; |
7bc570c8b [IPV6] MROUTE: Su... |
1266 1267 1268 1269 1270 |
mrt_cachep = kmem_cache_create("ip6_mrt_cache", sizeof(struct mfc6_cache), 0, SLAB_HWCACHE_ALIGN, NULL); if (!mrt_cachep) |
623d1a1af ipv6: Do cleanup ... |
1271 |
return -ENOMEM; |
7bc570c8b [IPV6] MROUTE: Su... |
1272 |
|
4e16880cb netns: ip6mr: dyn... |
1273 1274 1275 |
err = register_pernet_subsys(&ip6mr_net_ops); if (err) goto reg_pernet_fail; |
623d1a1af ipv6: Do cleanup ... |
1276 1277 1278 |
err = register_netdevice_notifier(&ip6_mr_notifier); if (err) goto reg_notif_fail; |
403dbb97f PIM-SM: namespace... |
1279 1280 1281 1282 1283 1284 1285 1286 |
#ifdef CONFIG_IPV6_PIMSM_V2 if (inet6_add_protocol(&pim6_protocol, IPPROTO_PIM) < 0) { printk(KERN_ERR "ip6_mr_init: can't add PIM protocol "); err = -EAGAIN; goto add_proto_fail; } #endif |
c7ac8679b rtnetlink: Comput... |
1287 1288 |
rtnl_register(RTNL_FAMILY_IP6MR, RTM_GETROUTE, NULL, ip6mr_rtm_dumproute, NULL); |
623d1a1af ipv6: Do cleanup ... |
1289 |
return 0; |
403dbb97f PIM-SM: namespace... |
1290 1291 1292 1293 |
#ifdef CONFIG_IPV6_PIMSM_V2 add_proto_fail: unregister_netdevice_notifier(&ip6_mr_notifier); #endif |
87b30a653 ipv6: fix ip6_mr_... |
1294 |
reg_notif_fail: |
4e16880cb netns: ip6mr: dyn... |
1295 1296 |
unregister_pernet_subsys(&ip6mr_net_ops); reg_pernet_fail: |
87b30a653 ipv6: fix ip6_mr_... |
1297 |
kmem_cache_destroy(mrt_cachep); |
623d1a1af ipv6: Do cleanup ... |
1298 |
return err; |
7bc570c8b [IPV6] MROUTE: Su... |
1299 |
} |
623d1a1af ipv6: Do cleanup ... |
1300 1301 |
void ip6_mr_cleanup(void) { |
623d1a1af ipv6: Do cleanup ... |
1302 |
unregister_netdevice_notifier(&ip6_mr_notifier); |
4e16880cb netns: ip6mr: dyn... |
1303 |
unregister_pernet_subsys(&ip6mr_net_ops); |
623d1a1af ipv6: Do cleanup ... |
1304 1305 |
kmem_cache_destroy(mrt_cachep); } |
7bc570c8b [IPV6] MROUTE: Su... |
1306 |
|
6bd521433 ipv6: ip6mr: move... |
1307 1308 |
static int ip6mr_mfc_add(struct net *net, struct mr6_table *mrt, struct mf6cctl *mfc, int mrtsock) |
7bc570c8b [IPV6] MROUTE: Su... |
1309 |
{ |
f30a77842 ipv6: ip6mr: conv... |
1310 |
bool found = false; |
7bc570c8b [IPV6] MROUTE: Su... |
1311 |
int line; |
f30a77842 ipv6: ip6mr: conv... |
1312 |
struct mfc6_cache *uc, *c; |
6ac7eb086 [IPV6] MROUTE: Ad... |
1313 |
unsigned char ttls[MAXMIFS]; |
7bc570c8b [IPV6] MROUTE: Su... |
1314 |
int i; |
a50436f2c net: ipmr/ip6mr: ... |
1315 1316 |
if (mfc->mf6cc_parent >= MAXMIFS) return -ENFILE; |
6ac7eb086 [IPV6] MROUTE: Ad... |
1317 1318 |
memset(ttls, 255, MAXMIFS); for (i = 0; i < MAXMIFS; i++) { |
7bc570c8b [IPV6] MROUTE: Su... |
1319 1320 1321 1322 1323 1324 |
if (IF_ISSET(i, &mfc->mf6cc_ifset)) ttls[i] = 1; } line = MFC6_HASH(&mfc->mf6cc_mcastgrp.sin6_addr, &mfc->mf6cc_origin.sin6_addr); |
6bd521433 ipv6: ip6mr: move... |
1325 |
list_for_each_entry(c, &mrt->mfc6_cache_array[line], list) { |
7bc570c8b [IPV6] MROUTE: Su... |
1326 |
if (ipv6_addr_equal(&c->mf6c_origin, &mfc->mf6cc_origin.sin6_addr) && |
f30a77842 ipv6: ip6mr: conv... |
1327 1328 |
ipv6_addr_equal(&c->mf6c_mcastgrp, &mfc->mf6cc_mcastgrp.sin6_addr)) { found = true; |
7bc570c8b [IPV6] MROUTE: Su... |
1329 |
break; |
f30a77842 ipv6: ip6mr: conv... |
1330 |
} |
7bc570c8b [IPV6] MROUTE: Su... |
1331 |
} |
f30a77842 ipv6: ip6mr: conv... |
1332 |
if (found) { |
7bc570c8b [IPV6] MROUTE: Su... |
1333 1334 |
write_lock_bh(&mrt_lock); c->mf6c_parent = mfc->mf6cc_parent; |
6bd521433 ipv6: ip6mr: move... |
1335 |
ip6mr_update_thresholds(mrt, c, ttls); |
7bc570c8b [IPV6] MROUTE: Su... |
1336 1337 1338 1339 1340 1341 1342 1343 |
if (!mrtsock) c->mfc_flags |= MFC_STATIC; write_unlock_bh(&mrt_lock); return 0; } if (!ipv6_addr_is_multicast(&mfc->mf6cc_mcastgrp.sin6_addr)) return -EINVAL; |
b5aa30b19 ipv6: ip6mr: remo... |
1344 |
c = ip6mr_cache_alloc(); |
7bc570c8b [IPV6] MROUTE: Su... |
1345 1346 1347 1348 1349 1350 |
if (c == NULL) return -ENOMEM; c->mf6c_origin = mfc->mf6cc_origin.sin6_addr; c->mf6c_mcastgrp = mfc->mf6cc_mcastgrp.sin6_addr; c->mf6c_parent = mfc->mf6cc_parent; |
6bd521433 ipv6: ip6mr: move... |
1351 |
ip6mr_update_thresholds(mrt, c, ttls); |
7bc570c8b [IPV6] MROUTE: Su... |
1352 1353 1354 1355 |
if (!mrtsock) c->mfc_flags |= MFC_STATIC; write_lock_bh(&mrt_lock); |
6bd521433 ipv6: ip6mr: move... |
1356 |
list_add(&c->list, &mrt->mfc6_cache_array[line]); |
7bc570c8b [IPV6] MROUTE: Su... |
1357 1358 1359 1360 1361 1362 |
write_unlock_bh(&mrt_lock); /* * Check to see if we resolved a queued list. If so we * need to send on the frames and tidy up. */ |
f30a77842 ipv6: ip6mr: conv... |
1363 |
found = false; |
7bc570c8b [IPV6] MROUTE: Su... |
1364 |
spin_lock_bh(&mfc_unres_lock); |
6bd521433 ipv6: ip6mr: move... |
1365 |
list_for_each_entry(uc, &mrt->mfc6_unres_queue, list) { |
c476efbcd ipv6: ip6mr: move... |
1366 |
if (ipv6_addr_equal(&uc->mf6c_origin, &c->mf6c_origin) && |
7bc570c8b [IPV6] MROUTE: Su... |
1367 |
ipv6_addr_equal(&uc->mf6c_mcastgrp, &c->mf6c_mcastgrp)) { |
f30a77842 ipv6: ip6mr: conv... |
1368 |
list_del(&uc->list); |
6bd521433 ipv6: ip6mr: move... |
1369 |
atomic_dec(&mrt->cache_resolve_queue_len); |
f30a77842 ipv6: ip6mr: conv... |
1370 |
found = true; |
7bc570c8b [IPV6] MROUTE: Su... |
1371 1372 1373 |
break; } } |
6bd521433 ipv6: ip6mr: move... |
1374 1375 |
if (list_empty(&mrt->mfc6_unres_queue)) del_timer(&mrt->ipmr_expire_timer); |
7bc570c8b [IPV6] MROUTE: Su... |
1376 |
spin_unlock_bh(&mfc_unres_lock); |
f30a77842 ipv6: ip6mr: conv... |
1377 |
if (found) { |
6bd521433 ipv6: ip6mr: move... |
1378 |
ip6mr_cache_resolve(net, mrt, uc, c); |
58701ad41 netns: ip6mr: sto... |
1379 |
ip6mr_cache_free(uc); |
7bc570c8b [IPV6] MROUTE: Su... |
1380 1381 1382 1383 1384 1385 1386 |
} return 0; } /* * Close the multicast socket, and clear the vif tables etc */ |
6bd521433 ipv6: ip6mr: move... |
1387 |
static void mroute_clean_tables(struct mr6_table *mrt) |
7bc570c8b [IPV6] MROUTE: Su... |
1388 1389 |
{ int i; |
c871e664e ip6mr: Optimize m... |
1390 |
LIST_HEAD(list); |
f30a77842 ipv6: ip6mr: conv... |
1391 |
struct mfc6_cache *c, *next; |
7bc570c8b [IPV6] MROUTE: Su... |
1392 1393 1394 1395 |
/* * Shut down all active vif entries */ |
6bd521433 ipv6: ip6mr: move... |
1396 1397 1398 |
for (i = 0; i < mrt->maxvif; i++) { if (!(mrt->vif6_table[i].flags & VIFF_STATIC)) mif6_delete(mrt, i, &list); |
7bc570c8b [IPV6] MROUTE: Su... |
1399 |
} |
c871e664e ip6mr: Optimize m... |
1400 |
unregister_netdevice_many(&list); |
7bc570c8b [IPV6] MROUTE: Su... |
1401 1402 1403 1404 |
/* * Wipe the cache */ |
4a6258a0e netns: ip6mr: dyn... |
1405 |
for (i = 0; i < MFC6_LINES; i++) { |
6bd521433 ipv6: ip6mr: move... |
1406 |
list_for_each_entry_safe(c, next, &mrt->mfc6_cache_array[i], list) { |
f30a77842 ipv6: ip6mr: conv... |
1407 |
if (c->mfc_flags & MFC_STATIC) |
7bc570c8b [IPV6] MROUTE: Su... |
1408 |
continue; |
7bc570c8b [IPV6] MROUTE: Su... |
1409 |
write_lock_bh(&mrt_lock); |
f30a77842 ipv6: ip6mr: conv... |
1410 |
list_del(&c->list); |
7bc570c8b [IPV6] MROUTE: Su... |
1411 |
write_unlock_bh(&mrt_lock); |
58701ad41 netns: ip6mr: sto... |
1412 |
ip6mr_cache_free(c); |
7bc570c8b [IPV6] MROUTE: Su... |
1413 1414 |
} } |
6bd521433 ipv6: ip6mr: move... |
1415 |
if (atomic_read(&mrt->cache_resolve_queue_len) != 0) { |
7bc570c8b [IPV6] MROUTE: Su... |
1416 |
spin_lock_bh(&mfc_unres_lock); |
6bd521433 ipv6: ip6mr: move... |
1417 |
list_for_each_entry_safe(c, next, &mrt->mfc6_unres_queue, list) { |
f30a77842 ipv6: ip6mr: conv... |
1418 |
list_del(&c->list); |
6bd521433 ipv6: ip6mr: move... |
1419 |
ip6mr_destroy_unres(mrt, c); |
7bc570c8b [IPV6] MROUTE: Su... |
1420 1421 1422 1423 |
} spin_unlock_bh(&mfc_unres_lock); } } |
6bd521433 ipv6: ip6mr: move... |
1424 |
static int ip6mr_sk_init(struct mr6_table *mrt, struct sock *sk) |
7bc570c8b [IPV6] MROUTE: Su... |
1425 1426 |
{ int err = 0; |
8229efdae netns: ip6mr: ena... |
1427 |
struct net *net = sock_net(sk); |
7bc570c8b [IPV6] MROUTE: Su... |
1428 1429 1430 |
rtnl_lock(); write_lock_bh(&mrt_lock); |
6bd521433 ipv6: ip6mr: move... |
1431 1432 |
if (likely(mrt->mroute6_sk == NULL)) { mrt->mroute6_sk = sk; |
1d6e55f19 IPv6: Fix multica... |
1433 1434 |
net->ipv6.devconf_all->mc_forwarding++; } |
7bc570c8b [IPV6] MROUTE: Su... |
1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 |
else err = -EADDRINUSE; write_unlock_bh(&mrt_lock); rtnl_unlock(); return err; } int ip6mr_sk_done(struct sock *sk) { |
d1db275dd ipv6: ip6mr: supp... |
1446 |
int err = -EACCES; |
8229efdae netns: ip6mr: ena... |
1447 |
struct net *net = sock_net(sk); |
d1db275dd ipv6: ip6mr: supp... |
1448 |
struct mr6_table *mrt; |
7bc570c8b [IPV6] MROUTE: Su... |
1449 1450 |
rtnl_lock(); |
d1db275dd ipv6: ip6mr: supp... |
1451 1452 1453 1454 1455 1456 |
ip6mr_for_each_table(mrt, net) { if (sk == mrt->mroute6_sk) { write_lock_bh(&mrt_lock); mrt->mroute6_sk = NULL; net->ipv6.devconf_all->mc_forwarding--; write_unlock_bh(&mrt_lock); |
7bc570c8b [IPV6] MROUTE: Su... |
1457 |
|
d1db275dd ipv6: ip6mr: supp... |
1458 1459 1460 1461 1462 |
mroute_clean_tables(mrt); err = 0; break; } } |
7bc570c8b [IPV6] MROUTE: Su... |
1463 1464 1465 1466 |
rtnl_unlock(); return err; } |
d1db275dd ipv6: ip6mr: supp... |
1467 |
struct sock *mroute6_socket(struct net *net, struct sk_buff *skb) |
6bd521433 ipv6: ip6mr: move... |
1468 |
{ |
d1db275dd ipv6: ip6mr: supp... |
1469 |
struct mr6_table *mrt; |
4c9483b2f ipv6: Convert to ... |
1470 1471 1472 1473 |
struct flowi6 fl6 = { .flowi6_iif = skb->skb_iif, .flowi6_oif = skb->dev->ifindex, .flowi6_mark = skb->mark, |
d1db275dd ipv6: ip6mr: supp... |
1474 |
}; |
4c9483b2f ipv6: Convert to ... |
1475 |
if (ip6mr_fib_lookup(net, &fl6, &mrt) < 0) |
d1db275dd ipv6: ip6mr: supp... |
1476 |
return NULL; |
6bd521433 ipv6: ip6mr: move... |
1477 1478 1479 |
return mrt->mroute6_sk; } |
7bc570c8b [IPV6] MROUTE: Su... |
1480 1481 1482 1483 1484 1485 |
/* * Socket options and virtual interface manipulation. The whole * virtual interface system is a complete heap, but unfortunately * that's how BSD mrouted happens to think. Maybe one day with a proper * MOSPF/PIM router set up we can clean this up. */ |
b7058842c net: Make setsock... |
1486 |
int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, unsigned int optlen) |
7bc570c8b [IPV6] MROUTE: Su... |
1487 1488 1489 1490 1491 |
{ int ret; struct mif6ctl vif; struct mf6cctl mfc; mifi_t mifi; |
8229efdae netns: ip6mr: ena... |
1492 |
struct net *net = sock_net(sk); |
d1db275dd ipv6: ip6mr: supp... |
1493 1494 1495 1496 1497 |
struct mr6_table *mrt; mrt = ip6mr_get_table(net, raw6_sk(sk)->ip6mr_table ? : RT6_TABLE_DFLT); if (mrt == NULL) return -ENOENT; |
7bc570c8b [IPV6] MROUTE: Su... |
1498 1499 |
if (optname != MRT6_INIT) { |
6bd521433 ipv6: ip6mr: move... |
1500 |
if (sk != mrt->mroute6_sk && !capable(CAP_NET_ADMIN)) |
7bc570c8b [IPV6] MROUTE: Su... |
1501 1502 1503 1504 1505 1506 |
return -EACCES; } switch (optname) { case MRT6_INIT: if (sk->sk_type != SOCK_RAW || |
c720c7e83 inet: rename some... |
1507 |
inet_sk(sk)->inet_num != IPPROTO_ICMPV6) |
7bc570c8b [IPV6] MROUTE: Su... |
1508 1509 1510 |
return -EOPNOTSUPP; if (optlen < sizeof(int)) return -EINVAL; |
6bd521433 ipv6: ip6mr: move... |
1511 |
return ip6mr_sk_init(mrt, sk); |
7bc570c8b [IPV6] MROUTE: Su... |
1512 1513 1514 1515 1516 1517 1518 1519 1520 |
case MRT6_DONE: return ip6mr_sk_done(sk); case MRT6_ADD_MIF: if (optlen < sizeof(vif)) return -EINVAL; if (copy_from_user(&vif, optval, sizeof(vif))) return -EFAULT; |
6ac7eb086 [IPV6] MROUTE: Ad... |
1521 |
if (vif.mif6c_mifi >= MAXMIFS) |
7bc570c8b [IPV6] MROUTE: Su... |
1522 1523 |
return -ENFILE; rtnl_lock(); |
6bd521433 ipv6: ip6mr: move... |
1524 |
ret = mif6_add(net, mrt, &vif, sk == mrt->mroute6_sk); |
7bc570c8b [IPV6] MROUTE: Su... |
1525 1526 1527 1528 1529 1530 1531 1532 1533 |
rtnl_unlock(); return ret; case MRT6_DEL_MIF: if (optlen < sizeof(mifi_t)) return -EINVAL; if (copy_from_user(&mifi, optval, sizeof(mifi_t))) return -EFAULT; rtnl_lock(); |
6bd521433 ipv6: ip6mr: move... |
1534 |
ret = mif6_delete(mrt, mifi, NULL); |
7bc570c8b [IPV6] MROUTE: Su... |
1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 |
rtnl_unlock(); return ret; /* * Manipulate the forwarding caches. These live * in a sort of kernel/user symbiosis. */ case MRT6_ADD_MFC: case MRT6_DEL_MFC: if (optlen < sizeof(mfc)) return -EINVAL; if (copy_from_user(&mfc, optval, sizeof(mfc))) return -EFAULT; rtnl_lock(); if (optname == MRT6_DEL_MFC) |
6bd521433 ipv6: ip6mr: move... |
1550 |
ret = ip6mr_mfc_delete(mrt, &mfc); |
7bc570c8b [IPV6] MROUTE: Su... |
1551 |
else |
6bd521433 ipv6: ip6mr: move... |
1552 |
ret = ip6mr_mfc_add(net, mrt, &mfc, sk == mrt->mroute6_sk); |
7bc570c8b [IPV6] MROUTE: Su... |
1553 1554 1555 1556 |
rtnl_unlock(); return ret; /* |
14fb64e1f [IPV6] MROUTE: Su... |
1557 1558 1559 1560 1561 1562 1563 |
* Control PIM assert (to activate pim will activate assert) */ case MRT6_ASSERT: { int v; if (get_user(v, (int __user *)optval)) return -EFAULT; |
6bd521433 ipv6: ip6mr: move... |
1564 |
mrt->mroute_do_assert = !!v; |
14fb64e1f [IPV6] MROUTE: Su... |
1565 1566 1567 1568 1569 1570 |
return 0; } #ifdef CONFIG_IPV6_PIMSM_V2 case MRT6_PIM: { |
a9f83bf38 [IPV6]: Sparse: R... |
1571 |
int v; |
14fb64e1f [IPV6] MROUTE: Su... |
1572 1573 1574 1575 1576 |
if (get_user(v, (int __user *)optval)) return -EFAULT; v = !!v; rtnl_lock(); ret = 0; |
6bd521433 ipv6: ip6mr: move... |
1577 1578 1579 |
if (v != mrt->mroute_do_pim) { mrt->mroute_do_pim = v; mrt->mroute_do_assert = v; |
14fb64e1f [IPV6] MROUTE: Su... |
1580 1581 1582 1583 1584 1585 |
} rtnl_unlock(); return ret; } #endif |
d1db275dd ipv6: ip6mr: supp... |
1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 |
#ifdef CONFIG_IPV6_MROUTE_MULTIPLE_TABLES case MRT6_TABLE: { u32 v; if (optlen != sizeof(u32)) return -EINVAL; if (get_user(v, (u32 __user *)optval)) return -EFAULT; if (sk == mrt->mroute6_sk) return -EBUSY; rtnl_lock(); ret = 0; if (!ip6mr_new_table(net, v)) ret = -ENOMEM; raw6_sk(sk)->ip6mr_table = v; rtnl_unlock(); return ret; } #endif |
14fb64e1f [IPV6] MROUTE: Su... |
1607 |
/* |
7d120c55d ipv6 mroute: Use ... |
1608 |
* Spurious command, or MRT6_VERSION which you cannot |
7bc570c8b [IPV6] MROUTE: Su... |
1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 |
* set. */ default: return -ENOPROTOOPT; } } /* * Getsock opt support for the multicast routing system. */ int ip6_mroute_getsockopt(struct sock *sk, int optname, char __user *optval, int __user *optlen) { int olr; int val; |
8229efdae netns: ip6mr: ena... |
1625 |
struct net *net = sock_net(sk); |
d1db275dd ipv6: ip6mr: supp... |
1626 1627 1628 1629 1630 |
struct mr6_table *mrt; mrt = ip6mr_get_table(net, raw6_sk(sk)->ip6mr_table ? : RT6_TABLE_DFLT); if (mrt == NULL) return -ENOENT; |
7bc570c8b [IPV6] MROUTE: Su... |
1631 1632 1633 1634 1635 |
switch (optname) { case MRT6_VERSION: val = 0x0305; break; |
14fb64e1f [IPV6] MROUTE: Su... |
1636 1637 |
#ifdef CONFIG_IPV6_PIMSM_V2 case MRT6_PIM: |
6bd521433 ipv6: ip6mr: move... |
1638 |
val = mrt->mroute_do_pim; |
14fb64e1f [IPV6] MROUTE: Su... |
1639 1640 1641 |
break; #endif case MRT6_ASSERT: |
6bd521433 ipv6: ip6mr: move... |
1642 |
val = mrt->mroute_do_assert; |
14fb64e1f [IPV6] MROUTE: Su... |
1643 |
break; |
7bc570c8b [IPV6] MROUTE: Su... |
1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 |
default: return -ENOPROTOOPT; } if (get_user(olr, optlen)) return -EFAULT; olr = min_t(int, olr, sizeof(int)); if (olr < 0) return -EINVAL; if (put_user(olr, optlen)) return -EFAULT; if (copy_to_user(optval, &val, olr)) return -EFAULT; return 0; } /* * The IP multicast ioctl support routines. */ int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg) { struct sioc_sg_req6 sr; struct sioc_mif_req6 vr; struct mif_device *vif; struct mfc6_cache *c; |
8229efdae netns: ip6mr: ena... |
1672 |
struct net *net = sock_net(sk); |
d1db275dd ipv6: ip6mr: supp... |
1673 1674 1675 1676 1677 |
struct mr6_table *mrt; mrt = ip6mr_get_table(net, raw6_sk(sk)->ip6mr_table ? : RT6_TABLE_DFLT); if (mrt == NULL) return -ENOENT; |
7bc570c8b [IPV6] MROUTE: Su... |
1678 1679 1680 1681 1682 |
switch (cmd) { case SIOCGETMIFCNT_IN6: if (copy_from_user(&vr, arg, sizeof(vr))) return -EFAULT; |
6bd521433 ipv6: ip6mr: move... |
1683 |
if (vr.mifi >= mrt->maxvif) |
7bc570c8b [IPV6] MROUTE: Su... |
1684 1685 |
return -EINVAL; read_lock(&mrt_lock); |
6bd521433 ipv6: ip6mr: move... |
1686 1687 |
vif = &mrt->vif6_table[vr.mifi]; if (MIF_EXISTS(mrt, vr.mifi)) { |
7bc570c8b [IPV6] MROUTE: Su... |
1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 |
vr.icount = vif->pkt_in; vr.ocount = vif->pkt_out; vr.ibytes = vif->bytes_in; vr.obytes = vif->bytes_out; read_unlock(&mrt_lock); if (copy_to_user(arg, &vr, sizeof(vr))) return -EFAULT; return 0; } read_unlock(&mrt_lock); return -EADDRNOTAVAIL; case SIOCGETSGCNT_IN6: if (copy_from_user(&sr, arg, sizeof(sr))) return -EFAULT; read_lock(&mrt_lock); |
6bd521433 ipv6: ip6mr: move... |
1705 |
c = ip6mr_cache_find(mrt, &sr.src.sin6_addr, &sr.grp.sin6_addr); |
7bc570c8b [IPV6] MROUTE: Su... |
1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 |
if (c) { sr.pktcnt = c->mfc_un.res.pkt; sr.bytecnt = c->mfc_un.res.bytes; sr.wrong_if = c->mfc_un.res.wrong_if; read_unlock(&mrt_lock); if (copy_to_user(arg, &sr, sizeof(sr))) return -EFAULT; return 0; } read_unlock(&mrt_lock); return -EADDRNOTAVAIL; default: return -ENOIOCTLCMD; } } |
e2d57766e net: Provide comp... |
1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 |
#ifdef CONFIG_COMPAT struct compat_sioc_sg_req6 { struct sockaddr_in6 src; struct sockaddr_in6 grp; compat_ulong_t pktcnt; compat_ulong_t bytecnt; compat_ulong_t wrong_if; }; struct compat_sioc_mif_req6 { mifi_t mifi; compat_ulong_t icount; compat_ulong_t ocount; compat_ulong_t ibytes; compat_ulong_t obytes; }; int ip6mr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg) { struct compat_sioc_sg_req6 sr; struct compat_sioc_mif_req6 vr; struct mif_device *vif; struct mfc6_cache *c; struct net *net = sock_net(sk); struct mr6_table *mrt; mrt = ip6mr_get_table(net, raw6_sk(sk)->ip6mr_table ? : RT6_TABLE_DFLT); if (mrt == NULL) return -ENOENT; switch (cmd) { case SIOCGETMIFCNT_IN6: if (copy_from_user(&vr, arg, sizeof(vr))) return -EFAULT; if (vr.mifi >= mrt->maxvif) return -EINVAL; read_lock(&mrt_lock); vif = &mrt->vif6_table[vr.mifi]; if (MIF_EXISTS(mrt, vr.mifi)) { vr.icount = vif->pkt_in; vr.ocount = vif->pkt_out; vr.ibytes = vif->bytes_in; vr.obytes = vif->bytes_out; read_unlock(&mrt_lock); if (copy_to_user(arg, &vr, sizeof(vr))) return -EFAULT; return 0; } read_unlock(&mrt_lock); return -EADDRNOTAVAIL; case SIOCGETSGCNT_IN6: if (copy_from_user(&sr, arg, sizeof(sr))) return -EFAULT; read_lock(&mrt_lock); c = ip6mr_cache_find(mrt, &sr.src.sin6_addr, &sr.grp.sin6_addr); if (c) { sr.pktcnt = c->mfc_un.res.pkt; sr.bytecnt = c->mfc_un.res.bytes; sr.wrong_if = c->mfc_un.res.wrong_if; read_unlock(&mrt_lock); if (copy_to_user(arg, &sr, sizeof(sr))) return -EFAULT; return 0; } read_unlock(&mrt_lock); return -EADDRNOTAVAIL; default: return -ENOIOCTLCMD; } } #endif |
7bc570c8b [IPV6] MROUTE: Su... |
1796 1797 1798 |
static inline int ip6mr_forward2_finish(struct sk_buff *skb) { |
adf30907d net: skb->dst acc... |
1799 |
IP6_INC_STATS_BH(dev_net(skb_dst(skb)->dev), ip6_dst_idev(skb_dst(skb)), |
483a47d2f ipv6: added net a... |
1800 |
IPSTATS_MIB_OUTFORWDATAGRAMS); |
7bc570c8b [IPV6] MROUTE: Su... |
1801 1802 1803 1804 1805 1806 |
return dst_output(skb); } /* * Processing handlers for ip6mr_forward */ |
6bd521433 ipv6: ip6mr: move... |
1807 1808 |
static int ip6mr_forward2(struct net *net, struct mr6_table *mrt, struct sk_buff *skb, struct mfc6_cache *c, int vifi) |
7bc570c8b [IPV6] MROUTE: Su... |
1809 1810 |
{ struct ipv6hdr *ipv6h; |
6bd521433 ipv6: ip6mr: move... |
1811 |
struct mif_device *vif = &mrt->vif6_table[vifi]; |
7bc570c8b [IPV6] MROUTE: Su... |
1812 1813 |
struct net_device *dev; struct dst_entry *dst; |
4c9483b2f ipv6: Convert to ... |
1814 |
struct flowi6 fl6; |
7bc570c8b [IPV6] MROUTE: Su... |
1815 1816 1817 |
if (vif->dev == NULL) goto out_free; |
14fb64e1f [IPV6] MROUTE: Su... |
1818 1819 1820 1821 |
#ifdef CONFIG_IPV6_PIMSM_V2 if (vif->flags & MIFF_REGISTER) { vif->pkt_out++; vif->bytes_out += skb->len; |
dc58c78c0 ip6mr: Use on-dev... |
1822 1823 |
vif->dev->stats.tx_bytes += skb->len; vif->dev->stats.tx_packets++; |
6bd521433 ipv6: ip6mr: move... |
1824 |
ip6mr_cache_report(mrt, skb, vifi, MRT6MSG_WHOLEPKT); |
8da73b73e ip6mr: use goto t... |
1825 |
goto out_free; |
14fb64e1f [IPV6] MROUTE: Su... |
1826 1827 |
} #endif |
7bc570c8b [IPV6] MROUTE: Su... |
1828 |
ipv6h = ipv6_hdr(skb); |
4c9483b2f ipv6: Convert to ... |
1829 1830 1831 |
fl6 = (struct flowi6) { .flowi6_oif = vif->link, .daddr = ipv6h->daddr, |
7bc570c8b [IPV6] MROUTE: Su... |
1832 |
}; |
4c9483b2f ipv6: Convert to ... |
1833 |
dst = ip6_route_output(net, NULL, &fl6); |
7bc570c8b [IPV6] MROUTE: Su... |
1834 1835 |
if (!dst) goto out_free; |
adf30907d net: skb->dst acc... |
1836 1837 |
skb_dst_drop(skb); skb_dst_set(skb, dst); |
7bc570c8b [IPV6] MROUTE: Su... |
1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 |
/* * RFC1584 teaches, that DVMRP/PIM router must deliver packets locally * not only before forwarding, but after forwarding on all output * interfaces. It is clear, if mrouter runs a multicasting * program, it should receive packets not depending to what interface * program is joined. * If we will not make it, the program will have to join on all * interfaces. On the other hand, multihoming host (or router, but * not mrouter) cannot join to more than one interface - it will * result in receiving multiple packets. */ dev = vif->dev; skb->dev = dev; vif->pkt_out++; vif->bytes_out += skb->len; /* We are about to write */ /* XXX: extension headers? */ if (skb_cow(skb, sizeof(*ipv6h) + LL_RESERVED_SPACE(dev))) goto out_free; ipv6h = ipv6_hdr(skb); ipv6h->hop_limit--; IP6CB(skb)->flags |= IP6SKB_FORWARDED; |
b2e0b385d netfilter: ipv6: ... |
1864 |
return NF_HOOK(NFPROTO_IPV6, NF_INET_FORWARD, skb, skb->dev, dev, |
7bc570c8b [IPV6] MROUTE: Su... |
1865 1866 1867 1868 1869 1870 |
ip6mr_forward2_finish); out_free: kfree_skb(skb); return 0; } |
6bd521433 ipv6: ip6mr: move... |
1871 |
static int ip6mr_find_vif(struct mr6_table *mrt, struct net_device *dev) |
7bc570c8b [IPV6] MROUTE: Su... |
1872 1873 |
{ int ct; |
6bd521433 ipv6: ip6mr: move... |
1874 1875 1876 |
for (ct = mrt->maxvif - 1; ct >= 0; ct--) { if (mrt->vif6_table[ct].dev == dev) |
7bc570c8b [IPV6] MROUTE: Su... |
1877 1878 1879 1880 |
break; } return ct; } |
6bd521433 ipv6: ip6mr: move... |
1881 1882 |
static int ip6_mr_forward(struct net *net, struct mr6_table *mrt, struct sk_buff *skb, struct mfc6_cache *cache) |
7bc570c8b [IPV6] MROUTE: Su... |
1883 1884 1885 1886 1887 1888 1889 |
{ int psend = -1; int vif, ct; vif = cache->mf6c_parent; cache->mfc_un.res.pkt++; cache->mfc_un.res.bytes += skb->len; |
14fb64e1f [IPV6] MROUTE: Su... |
1890 1891 1892 |
/* * Wrong interface: drop packet and (maybe) send PIM assert. */ |
6bd521433 ipv6: ip6mr: move... |
1893 |
if (mrt->vif6_table[vif].dev != skb->dev) { |
14fb64e1f [IPV6] MROUTE: Su... |
1894 1895 1896 |
int true_vifi; cache->mfc_un.res.wrong_if++; |
6bd521433 ipv6: ip6mr: move... |
1897 |
true_vifi = ip6mr_find_vif(mrt, skb->dev); |
14fb64e1f [IPV6] MROUTE: Su... |
1898 |
|
6bd521433 ipv6: ip6mr: move... |
1899 |
if (true_vifi >= 0 && mrt->mroute_do_assert && |
14fb64e1f [IPV6] MROUTE: Su... |
1900 1901 1902 1903 1904 |
/* pimsm uses asserts, when switching from RPT to SPT, so that we cannot check that packet arrived on an oif. It is bad, but otherwise we would need to move pretty large chunk of pimd to kernel. Ough... --ANK */ |
6bd521433 ipv6: ip6mr: move... |
1905 |
(mrt->mroute_do_pim || |
a21f3f997 netns: ip6mr: dec... |
1906 |
cache->mfc_un.res.ttls[true_vifi] < 255) && |
14fb64e1f [IPV6] MROUTE: Su... |
1907 1908 1909 |
time_after(jiffies, cache->mfc_un.res.last_assert + MFC_ASSERT_THRESH)) { cache->mfc_un.res.last_assert = jiffies; |
6bd521433 ipv6: ip6mr: move... |
1910 |
ip6mr_cache_report(mrt, skb, true_vifi, MRT6MSG_WRONGMIF); |
14fb64e1f [IPV6] MROUTE: Su... |
1911 1912 1913 |
} goto dont_forward; } |
6bd521433 ipv6: ip6mr: move... |
1914 1915 |
mrt->vif6_table[vif].pkt_in++; mrt->vif6_table[vif].bytes_in += skb->len; |
7bc570c8b [IPV6] MROUTE: Su... |
1916 1917 1918 1919 1920 1921 1922 1923 1924 |
/* * Forward the frame */ for (ct = cache->mfc_un.res.maxvif - 1; ct >= cache->mfc_un.res.minvif; ct--) { if (ipv6_hdr(skb)->hop_limit > cache->mfc_un.res.ttls[ct]) { if (psend != -1) { struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC); if (skb2) |
6bd521433 ipv6: ip6mr: move... |
1925 |
ip6mr_forward2(net, mrt, skb2, cache, psend); |
7bc570c8b [IPV6] MROUTE: Su... |
1926 1927 1928 1929 1930 |
} psend = ct; } } if (psend != -1) { |
6bd521433 ipv6: ip6mr: move... |
1931 |
ip6mr_forward2(net, mrt, skb, cache, psend); |
7bc570c8b [IPV6] MROUTE: Su... |
1932 1933 |
return 0; } |
14fb64e1f [IPV6] MROUTE: Su... |
1934 |
dont_forward: |
7bc570c8b [IPV6] MROUTE: Su... |
1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 |
kfree_skb(skb); return 0; } /* * Multicast packets for forwarding arrive here */ int ip6_mr_input(struct sk_buff *skb) { struct mfc6_cache *cache; |
8229efdae netns: ip6mr: ena... |
1947 |
struct net *net = dev_net(skb->dev); |
d1db275dd ipv6: ip6mr: supp... |
1948 |
struct mr6_table *mrt; |
4c9483b2f ipv6: Convert to ... |
1949 1950 1951 |
struct flowi6 fl6 = { .flowi6_iif = skb->dev->ifindex, .flowi6_mark = skb->mark, |
d1db275dd ipv6: ip6mr: supp... |
1952 1953 |
}; int err; |
4c9483b2f ipv6: Convert to ... |
1954 |
err = ip6mr_fib_lookup(net, &fl6, &mrt); |
2015de5fe ipv6-multicast: F... |
1955 1956 |
if (err < 0) { kfree_skb(skb); |
d1db275dd ipv6: ip6mr: supp... |
1957 |
return err; |
2015de5fe ipv6-multicast: F... |
1958 |
} |
7bc570c8b [IPV6] MROUTE: Su... |
1959 1960 |
read_lock(&mrt_lock); |
6bd521433 ipv6: ip6mr: move... |
1961 |
cache = ip6mr_cache_find(mrt, |
8229efdae netns: ip6mr: ena... |
1962 |
&ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr); |
7bc570c8b [IPV6] MROUTE: Su... |
1963 1964 1965 1966 1967 1968 |
/* * No usable cache entry */ if (cache == NULL) { int vif; |
6bd521433 ipv6: ip6mr: move... |
1969 |
vif = ip6mr_find_vif(mrt, skb->dev); |
7bc570c8b [IPV6] MROUTE: Su... |
1970 |
if (vif >= 0) { |
6bd521433 ipv6: ip6mr: move... |
1971 |
int err = ip6mr_cache_unresolved(mrt, vif, skb); |
7bc570c8b [IPV6] MROUTE: Su... |
1972 1973 1974 1975 1976 1977 1978 1979 |
read_unlock(&mrt_lock); return err; } read_unlock(&mrt_lock); kfree_skb(skb); return -ENODEV; } |
6bd521433 ipv6: ip6mr: move... |
1980 |
ip6_mr_forward(net, mrt, skb, cache); |
7bc570c8b [IPV6] MROUTE: Su... |
1981 1982 1983 1984 1985 |
read_unlock(&mrt_lock); return 0; } |
5b285cac3 ipv6: ip6mr: add ... |
1986 1987 |
static int __ip6mr_fill_mroute(struct mr6_table *mrt, struct sk_buff *skb, struct mfc6_cache *c, struct rtmsg *rtm) |
7bc570c8b [IPV6] MROUTE: Su... |
1988 1989 1990 |
{ int ct; struct rtnexthop *nhp; |
549e028d0 [IPV6] MROUTE: Us... |
1991 |
u8 *b = skb_tail_pointer(skb); |
7bc570c8b [IPV6] MROUTE: Su... |
1992 |
struct rtattr *mp_head; |
7438189ba net: ipmr/ip6mr: ... |
1993 |
/* If cache is unresolved, don't try to parse IIF and OIF */ |
ed0f160ad ipmr: off by one ... |
1994 |
if (c->mf6c_parent >= MAXMIFS) |
7438189ba net: ipmr/ip6mr: ... |
1995 |
return -ENOENT; |
6bd521433 ipv6: ip6mr: move... |
1996 1997 |
if (MIF_EXISTS(mrt, c->mf6c_parent)) RTA_PUT(skb, RTA_IIF, 4, &mrt->vif6_table[c->mf6c_parent].dev->ifindex); |
7bc570c8b [IPV6] MROUTE: Su... |
1998 1999 2000 2001 |
mp_head = (struct rtattr *)skb_put(skb, RTA_LENGTH(0)); for (ct = c->mfc_un.res.minvif; ct < c->mfc_un.res.maxvif; ct++) { |
6bd521433 ipv6: ip6mr: move... |
2002 |
if (MIF_EXISTS(mrt, ct) && c->mfc_un.res.ttls[ct] < 255) { |
7bc570c8b [IPV6] MROUTE: Su... |
2003 2004 2005 2006 2007 |
if (skb_tailroom(skb) < RTA_ALIGN(RTA_ALIGN(sizeof(*nhp)) + 4)) goto rtattr_failure; nhp = (struct rtnexthop *)skb_put(skb, RTA_ALIGN(sizeof(*nhp))); nhp->rtnh_flags = 0; nhp->rtnh_hops = c->mfc_un.res.ttls[ct]; |
6bd521433 ipv6: ip6mr: move... |
2008 |
nhp->rtnh_ifindex = mrt->vif6_table[ct].dev->ifindex; |
7bc570c8b [IPV6] MROUTE: Su... |
2009 2010 2011 2012 |
nhp->rtnh_len = sizeof(*nhp); } } mp_head->rta_type = RTA_MULTIPATH; |
549e028d0 [IPV6] MROUTE: Us... |
2013 |
mp_head->rta_len = skb_tail_pointer(skb) - (u8 *)mp_head; |
7bc570c8b [IPV6] MROUTE: Su... |
2014 2015 2016 2017 2018 2019 2020 |
rtm->rtm_type = RTN_MULTICAST; return 1; rtattr_failure: nlmsg_trim(skb, b); return -EMSGSIZE; } |
8229efdae netns: ip6mr: ena... |
2021 2022 |
int ip6mr_get_route(struct net *net, struct sk_buff *skb, struct rtmsg *rtm, int nowait) |
7bc570c8b [IPV6] MROUTE: Su... |
2023 2024 |
{ int err; |
d1db275dd ipv6: ip6mr: supp... |
2025 |
struct mr6_table *mrt; |
7bc570c8b [IPV6] MROUTE: Su... |
2026 |
struct mfc6_cache *cache; |
adf30907d net: skb->dst acc... |
2027 |
struct rt6_info *rt = (struct rt6_info *)skb_dst(skb); |
7bc570c8b [IPV6] MROUTE: Su... |
2028 |
|
d1db275dd ipv6: ip6mr: supp... |
2029 2030 2031 |
mrt = ip6mr_get_table(net, RT6_TABLE_DFLT); if (mrt == NULL) return -ENOENT; |
7bc570c8b [IPV6] MROUTE: Su... |
2032 |
read_lock(&mrt_lock); |
6bd521433 ipv6: ip6mr: move... |
2033 |
cache = ip6mr_cache_find(mrt, &rt->rt6i_src.addr, &rt->rt6i_dst.addr); |
7bc570c8b [IPV6] MROUTE: Su... |
2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 |
if (!cache) { struct sk_buff *skb2; struct ipv6hdr *iph; struct net_device *dev; int vif; if (nowait) { read_unlock(&mrt_lock); return -EAGAIN; } dev = skb->dev; |
6bd521433 ipv6: ip6mr: move... |
2047 |
if (dev == NULL || (vif = ip6mr_find_vif(mrt, dev)) < 0) { |
7bc570c8b [IPV6] MROUTE: Su... |
2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 |
read_unlock(&mrt_lock); return -ENODEV; } /* really correct? */ skb2 = alloc_skb(sizeof(struct ipv6hdr), GFP_ATOMIC); if (!skb2) { read_unlock(&mrt_lock); return -ENOMEM; } skb_reset_transport_header(skb2); skb_put(skb2, sizeof(struct ipv6hdr)); skb_reset_network_header(skb2); iph = ipv6_hdr(skb2); iph->version = 0; iph->priority = 0; iph->flow_lbl[0] = 0; iph->flow_lbl[1] = 0; iph->flow_lbl[2] = 0; iph->payload_len = 0; iph->nexthdr = IPPROTO_NONE; iph->hop_limit = 0; |
4e3fd7a06 net: remove ipv6_... |
2073 2074 |
iph->saddr = rt->rt6i_src.addr; iph->daddr = rt->rt6i_dst.addr; |
7bc570c8b [IPV6] MROUTE: Su... |
2075 |
|
6bd521433 ipv6: ip6mr: move... |
2076 |
err = ip6mr_cache_unresolved(mrt, vif, skb2); |
7bc570c8b [IPV6] MROUTE: Su... |
2077 2078 2079 2080 2081 2082 2083 |
read_unlock(&mrt_lock); return err; } if (!nowait && (rtm->rtm_flags&RTM_F_NOTIFY)) cache->mfc_flags |= MFC_NOTIFY; |
5b285cac3 ipv6: ip6mr: add ... |
2084 |
err = __ip6mr_fill_mroute(mrt, skb, cache, rtm); |
7bc570c8b [IPV6] MROUTE: Su... |
2085 2086 2087 |
read_unlock(&mrt_lock); return err; } |
5b285cac3 ipv6: ip6mr: add ... |
2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 |
static int ip6mr_fill_mroute(struct mr6_table *mrt, struct sk_buff *skb, u32 pid, u32 seq, struct mfc6_cache *c) { struct nlmsghdr *nlh; struct rtmsg *rtm; nlh = nlmsg_put(skb, pid, seq, RTM_NEWROUTE, sizeof(*rtm), NLM_F_MULTI); if (nlh == NULL) return -EMSGSIZE; rtm = nlmsg_data(nlh); rtm->rtm_family = RTNL_FAMILY_IPMR; rtm->rtm_dst_len = 128; rtm->rtm_src_len = 128; rtm->rtm_tos = 0; rtm->rtm_table = mrt->id; NLA_PUT_U32(skb, RTA_TABLE, mrt->id); rtm->rtm_scope = RT_SCOPE_UNIVERSE; rtm->rtm_protocol = RTPROT_UNSPEC; rtm->rtm_flags = 0; NLA_PUT(skb, RTA_SRC, 16, &c->mf6c_origin); NLA_PUT(skb, RTA_DST, 16, &c->mf6c_mcastgrp); if (__ip6mr_fill_mroute(mrt, skb, c, rtm) < 0) goto nla_put_failure; return nlmsg_end(skb, nlh); nla_put_failure: nlmsg_cancel(skb, nlh); return -EMSGSIZE; } static int ip6mr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb) { struct net *net = sock_net(skb->sk); struct mr6_table *mrt; struct mfc6_cache *mfc; unsigned int t = 0, s_t; unsigned int h = 0, s_h; unsigned int e = 0, s_e; s_t = cb->args[0]; s_h = cb->args[1]; s_e = cb->args[2]; read_lock(&mrt_lock); ip6mr_for_each_table(mrt, net) { if (t < s_t) goto next_table; if (t > s_t) s_h = 0; for (h = s_h; h < MFC6_LINES; h++) { list_for_each_entry(mfc, &mrt->mfc6_cache_array[h], list) { if (e < s_e) goto next_entry; if (ip6mr_fill_mroute(mrt, skb, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq, mfc) < 0) goto done; next_entry: e++; } e = s_e = 0; } s_h = 0; next_table: t++; } done: read_unlock(&mrt_lock); cb->args[2] = e; cb->args[1] = h; cb->args[0] = t; return skb->len; } |