X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=net%2Fipv4%2Ffib_rules.c;h=19274d01afa4a36c3777b5ff34816fa63783734a;hb=0d995b2b446c2304c04058bedba49460823adbf7;hp=f16839c6a721ab98d2402e16a9aa51087954afad;hpb=76c72d4f44ec5fb7f88eda8a0d3aa30922c891d1;p=linux-2.6-omap-h63xx.git diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c index f16839c6a72..19274d01afa 100644 --- a/net/ipv4/fib_rules.c +++ b/net/ipv4/fib_rules.c @@ -32,8 +32,6 @@ #include #include -static struct fib_rules_ops fib4_rules_ops; - struct fib4_rule { struct fib_rule common; @@ -49,33 +47,6 @@ struct fib4_rule #endif }; -static struct fib4_rule default_rule = { - .common = { - .refcnt = ATOMIC_INIT(2), - .pref = 0x7FFF, - .table = RT_TABLE_DEFAULT, - .action = FR_ACT_TO_TBL, - }, -}; - -static struct fib4_rule main_rule = { - .common = { - .refcnt = ATOMIC_INIT(2), - .pref = 0x7FFE, - .table = RT_TABLE_MAIN, - .action = FR_ACT_TO_TBL, - }, -}; - -static struct fib4_rule local_rule = { - .common = { - .refcnt = ATOMIC_INIT(2), - .table = RT_TABLE_LOCAL, - .action = FR_ACT_TO_TBL, - .flags = FIB_RULE_PERMANENT, - }, -}; - #ifdef CONFIG_NET_CLS_ROUTE u32 fib_rules_tclass(struct fib_result *res) { @@ -83,14 +54,14 @@ u32 fib_rules_tclass(struct fib_result *res) } #endif -int fib_lookup(struct flowi *flp, struct fib_result *res) +int fib_lookup(struct net *net, struct flowi *flp, struct fib_result *res) { struct fib_lookup_arg arg = { .result = res, }; int err; - err = fib_rules_lookup(&fib4_rules_ops, flp, 0, &arg); + err = fib_rules_lookup(net->ipv4.rules_ops, flp, 0, &arg); res->r = arg.rule; return err; @@ -120,7 +91,7 @@ static int fib4_rule_action(struct fib_rule *rule, struct flowi *flp, goto errout; } - if ((tbl = fib_get_table(rule->table)) == NULL) + if ((tbl = fib_get_table(rule->fr_net, rule->table)) == NULL) goto errout; err = tbl->tb_lookup(tbl, flp, (struct fib_result *) arg->result); @@ -131,16 +102,6 @@ errout: } -void fib_select_default(const struct flowi *flp, struct fib_result *res) -{ - if (res->r && res->r->action == FR_ACT_TO_TBL && - FIB_RES_GW(*res) && FIB_RES_NH(*res).nh_scope == RT_SCOPE_LINK) { - struct fib_table *tb; - if ((tb = fib_get_table(res->r->table)) != NULL) - tb->tb_select_default(tb, flp, res); - } -} - static int fib4_rule_match(struct fib_rule *rule, struct flowi *fl, int flags) { struct fib4_rule *r = (struct fib4_rule *) rule; @@ -157,13 +118,13 @@ static int fib4_rule_match(struct fib_rule *rule, struct flowi *fl, int flags) return 1; } -static struct fib_table *fib_empty_table(void) +static struct fib_table *fib_empty_table(struct net *net) { u32 id; for (id = 1; id <= RT_TABLE_MAX; id++) - if (fib_get_table(id) == NULL) - return fib_new_table(id); + if (fib_get_table(net, id) == NULL) + return fib_new_table(net, id); return NULL; } @@ -176,6 +137,7 @@ static int fib4_rule_configure(struct fib_rule *rule, struct sk_buff *skb, struct nlmsghdr *nlh, struct fib_rule_hdr *frh, struct nlattr **tb) { + struct net *net = skb->sk->sk_net; int err = -EINVAL; struct fib4_rule *rule4 = (struct fib4_rule *) rule; @@ -186,7 +148,7 @@ static int fib4_rule_configure(struct fib_rule *rule, struct sk_buff *skb, if (rule->action == FR_ACT_TO_TBL) { struct fib_table *table; - table = fib_empty_table(); + table = fib_empty_table(net); if (table == NULL) { err = -ENOBUFS; goto errout; @@ -272,14 +234,14 @@ nla_put_failure: return -ENOBUFS; } -static u32 fib4_rule_default_pref(void) +static u32 fib4_rule_default_pref(struct fib_rules_ops *ops) { struct list_head *pos; struct fib_rule *rule; - if (!list_empty(&fib4_rules_ops.rules_list)) { - pos = fib4_rules_ops.rules_list.next; - if (pos->next != &fib4_rules_ops.rules_list) { + if (!list_empty(&ops->rules_list)) { + pos = ops->rules_list.next; + if (pos->next != &ops->rules_list) { rule = list_entry(pos->next, struct fib_rule, list); if (rule->pref) return rule->pref - 1; @@ -301,7 +263,7 @@ static void fib4_rule_flush_cache(void) rt_cache_flush(-1); } -static struct fib_rules_ops fib4_rules_ops = { +static struct fib_rules_ops fib4_rules_ops_template = { .family = AF_INET, .rule_size = sizeof(struct fib4_rule), .addr_size = sizeof(u32), @@ -315,15 +277,53 @@ static struct fib_rules_ops fib4_rules_ops = { .flush_cache = fib4_rule_flush_cache, .nlgroup = RTNLGRP_IPV4_RULE, .policy = fib4_rule_policy, - .rules_list = LIST_HEAD_INIT(fib4_rules_ops.rules_list), .owner = THIS_MODULE, }; -void __init fib4_rules_init(void) +static int fib_default_rules_init(struct fib_rules_ops *ops) +{ + int err; + + err = fib_default_rule_add(ops, 0, RT_TABLE_LOCAL, FIB_RULE_PERMANENT); + if (err < 0) + return err; + err = fib_default_rule_add(ops, 0x7FFE, RT_TABLE_MAIN, 0); + if (err < 0) + return err; + err = fib_default_rule_add(ops, 0x7FFF, RT_TABLE_DEFAULT, 0); + if (err < 0) + return err; + return 0; +} + +int __net_init fib4_rules_init(struct net *net) { - list_add_tail(&local_rule.common.list, &fib4_rules_ops.rules_list); - list_add_tail(&main_rule.common.list, &fib4_rules_ops.rules_list); - list_add_tail(&default_rule.common.list, &fib4_rules_ops.rules_list); + int err; + struct fib_rules_ops *ops; + + ops = kmemdup(&fib4_rules_ops_template, sizeof(*ops), GFP_KERNEL); + if (ops == NULL) + return -ENOMEM; + INIT_LIST_HEAD(&ops->rules_list); + ops->fro_net = net; + + fib_rules_register(ops); - fib_rules_register(&fib4_rules_ops); + err = fib_default_rules_init(ops); + if (err < 0) + goto fail; + net->ipv4.rules_ops = ops; + return 0; + +fail: + /* also cleans all rules already added */ + fib_rules_unregister(ops); + kfree(ops); + return err; +} + +void __net_exit fib4_rules_exit(struct net *net) +{ + fib_rules_unregister(net->ipv4.rules_ops); + kfree(net->ipv4.rules_ops); }