netfilter: fix Kconfig dependencies

Fix dependencies of netfilter realm match: it depends on NET_CLS_ROUTE,
which itself depends on NET_SCHED; this dependency is missing from netfilter.

Since matching on realms is also useful without having NET_SCHED enabled and
the option really only controls whether the tclassid member is included in
route and dst entries, rename the config option to IP_ROUTE_CLASSID and move
it outside of traffic scheduling context to get rid of the NET_SCHED dependeny.

Reported-by: Vladis Kletnieks <Valdis.Kletnieks@vt.edu>
Signed-off-by: Patrick McHardy <kaber@trash.net>

diff --git a/include/net/dst.h b/include/net/dst.h
index a5bd726..6baba83 100644 (file)
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -72,7 +72,7 @@ struct dst_entry {
 
        u32                     metrics[RTAX_MAX];
 
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
        __u32                   tclassid;
 #else
        __u32                   __pad2;

diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h
index 07bdb5e..65d1fcd 100644 (file)
--- a/include/net/ip_fib.h
+++ b/include/net/ip_fib.h
@@ -55,7 +55,7 @@ struct fib_nh {
        int                     nh_weight;
        int                     nh_power;
 #endif
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
        __u32                   nh_tclassid;
 #endif
        int                     nh_oif;
@@ -201,7 +201,7 @@ static inline int fib_lookup(struct net *net, const struct flowi *flp,
 extern int __net_init fib4_rules_init(struct net *net);
 extern void __net_exit fib4_rules_exit(struct net *net);
 
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
 extern u32 fib_rules_tclass(struct fib_result *res);
 #endif
 
@@ -235,7 +235,7 @@ extern struct fib_table *fib_hash_table(u32 id);
 
 static inline void fib_combine_itag(u32 *itag, struct fib_result *res)
 {
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
 #ifdef CONFIG_IP_MULTIPLE_TABLES
        u32 rtag;
 #endif

diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
index 9e95d7f..dcb2e18 100644 (file)
--- a/net/ipv4/Kconfig
+++ b/net/ipv4/Kconfig
@@ -140,6 +140,9 @@ config IP_ROUTE_VERBOSE
          handled by the klogd daemon which is responsible for kernel messages
          ("man klogd").
 
+config IP_ROUTE_CLASSID
+       bool
+
 config IP_PNP
        bool "IP: kernel level autoconfiguration"
        help
@@ -655,4 +658,3 @@ config TCP_MD5SIG
          on the Internet.
 
          If unsure, say N.
-

diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c
index 7981a24..9cefe72 100644 (file)
--- a/net/ipv4/fib_rules.c
+++ b/net/ipv4/fib_rules.c
@@ -41,12 +41,12 @@ struct fib4_rule {
        __be32                  srcmask;
        __be32                  dst;
        __be32                  dstmask;
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
        u32                     tclassid;
 #endif
 };
 
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
 u32 fib_rules_tclass(struct fib_result *res)
 {
        return res->r ? ((struct fib4_rule *) res->r)->tclassid : 0;
@@ -165,7 +165,7 @@ static int fib4_rule_configure(struct fib_rule *rule, struct sk_buff *skb,
        if (frh->dst_len)
                rule4->dst = nla_get_be32(tb[FRA_DST]);
 
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
        if (tb[FRA_FLOW])
                rule4->tclassid = nla_get_u32(tb[FRA_FLOW]);
 #endif
@@ -195,7 +195,7 @@ static int fib4_rule_compare(struct fib_rule *rule, struct fib_rule_hdr *frh,
        if (frh->tos && (rule4->tos != frh->tos))
                return 0;
 
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
        if (tb[FRA_FLOW] && (rule4->tclassid != nla_get_u32(tb[FRA_FLOW])))
                return 0;
 #endif
@@ -224,7 +224,7 @@ static int fib4_rule_fill(struct fib_rule *rule, struct sk_buff *skb,
        if (rule4->src_len)
                NLA_PUT_BE32(skb, FRA_SRC, rule4->src);
 
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
        if (rule4->tclassid)
                NLA_PUT_U32(skb, FRA_FLOW, rule4->tclassid);
 #endif

diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 3e0da3e..a72c62d 100644 (file)
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -200,7 +200,7 @@ static inline int nh_comp(const struct fib_info *fi, const struct fib_info *ofi)
 #ifdef CONFIG_IP_ROUTE_MULTIPATH
                    nh->nh_weight != onh->nh_weight ||
 #endif
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
                    nh->nh_tclassid != onh->nh_tclassid ||
 #endif
                    ((nh->nh_flags ^ onh->nh_flags) & ~RTNH_F_DEAD))
@@ -422,7 +422,7 @@ static int fib_get_nhs(struct fib_info *fi, struct rtnexthop *rtnh,
 
                        nla = nla_find(attrs, attrlen, RTA_GATEWAY);
                        nexthop_nh->nh_gw = nla ? nla_get_be32(nla) : 0;
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
                        nla = nla_find(attrs, attrlen, RTA_FLOW);
                        nexthop_nh->nh_tclassid = nla ? nla_get_u32(nla) : 0;
 #endif
@@ -476,7 +476,7 @@ int fib_nh_match(struct fib_config *cfg, struct fib_info *fi)
                        nla = nla_find(attrs, attrlen, RTA_GATEWAY);
                        if (nla && nla_get_be32(nla) != nh->nh_gw)
                                return 1;
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
                        nla = nla_find(attrs, attrlen, RTA_FLOW);
                        if (nla && nla_get_u32(nla) != nh->nh_tclassid)
                                return 1;
@@ -783,7 +783,7 @@ struct fib_info *fib_create_info(struct fib_config *cfg)
                        goto err_inval;
                if (cfg->fc_gw && fi->fib_nh->nh_gw != cfg->fc_gw)
                        goto err_inval;
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
                if (cfg->fc_flow && fi->fib_nh->nh_tclassid != cfg->fc_flow)
                        goto err_inval;
 #endif
@@ -796,7 +796,7 @@ struct fib_info *fib_create_info(struct fib_config *cfg)
                nh->nh_oif = cfg->fc_oif;
                nh->nh_gw = cfg->fc_gw;
                nh->nh_flags = cfg->fc_flags;
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
                nh->nh_tclassid = cfg->fc_flow;
 #endif
 #ifdef CONFIG_IP_ROUTE_MULTIPATH
@@ -1006,7 +1006,7 @@ int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
 
                if (fi->fib_nh->nh_oif)
                        NLA_PUT_U32(skb, RTA_OIF, fi->fib_nh->nh_oif);
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
                if (fi->fib_nh[0].nh_tclassid)
                        NLA_PUT_U32(skb, RTA_FLOW, fi->fib_nh[0].nh_tclassid);
 #endif
@@ -1031,7 +1031,7 @@ int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
 
                        if (nh->nh_gw)
                                NLA_PUT_BE32(skb, RTA_GATEWAY, nh->nh_gw);
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
                        if (nh->nh_tclassid)
                                NLA_PUT_U32(skb, RTA_FLOW, nh->nh_tclassid);
 #endif

diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index d859bcc..d7b2b09 100644 (file)
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -340,7 +340,7 @@ static int ip_rcv_finish(struct sk_buff *skb)
                }
        }
 
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
        if (unlikely(skb_dst(skb)->tclassid)) {
                struct ip_rt_acct *st = this_cpu_ptr(ip_rt_acct);
                u32 idx = skb_dst(skb)->tclassid;

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 66610ea..f70ae1b 100644 (file)
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -511,7 +511,7 @@ static const struct file_operations rt_cpu_seq_fops = {
        .release = seq_release,
 };
 
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
 static int rt_acct_proc_show(struct seq_file *m, void *v)
 {
        struct ip_rt_acct *dst, *src;
@@ -564,14 +564,14 @@ static int __net_init ip_rt_do_proc_init(struct net *net)
        if (!pde)
                goto err2;
 
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
        pde = proc_create("rt_acct", 0, net->proc_net, &rt_acct_proc_fops);
        if (!pde)
                goto err3;
 #endif
        return 0;
 
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
 err3:
        remove_proc_entry("rt_cache", net->proc_net_stat);
 #endif
@@ -585,7 +585,7 @@ static void __net_exit ip_rt_do_proc_exit(struct net *net)
 {
        remove_proc_entry("rt_cache", net->proc_net_stat);
        remove_proc_entry("rt_cache", net->proc_net);
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
        remove_proc_entry("rt_acct", net->proc_net);
 #endif
 }
@@ -1784,7 +1784,7 @@ void ip_rt_get_source(u8 *addr, struct rtable *rt)
        memcpy(addr, &src, 4);
 }
 
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
 static void set_class_tag(struct rtable *rt, u32 tag)
 {
        if (!(rt->dst.tclassid & 0xFFFF))
@@ -1811,7 +1811,7 @@ static void rt_set_nexthop(struct rtable *rt, struct fib_result *res, u32 itag)
                            rt->dst.dev->mtu > 576)
                                rt->dst.metrics[RTAX_MTU-1] = 576;
                }
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
                rt->dst.tclassid = FIB_RES_NH(*res).nh_tclassid;
 #endif
        } else
@@ -1827,7 +1827,7 @@ static void rt_set_nexthop(struct rtable *rt, struct fib_result *res, u32 itag)
        if (dst_metric(&rt->dst, RTAX_ADVMSS) > 65535 - 40)
                rt->dst.metrics[RTAX_ADVMSS-1] = 65535 - 40;
 
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
 #ifdef CONFIG_IP_MULTIPLE_TABLES
        set_class_tag(rt, fib_rules_tclass(res));
 #endif
@@ -1883,7 +1883,7 @@ static int ip_route_input_mc(struct sk_buff *skb, __be32 daddr, __be32 saddr,
        rth->fl.mark    = skb->mark;
        rth->fl.fl4_src = saddr;
        rth->rt_src     = saddr;
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
        rth->dst.tclassid = itag;
 #endif
        rth->rt_iif     =
@@ -2202,7 +2202,7 @@ local_input:
        rth->fl.mark    = skb->mark;
        rth->fl.fl4_src = saddr;
        rth->rt_src     = saddr;
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
        rth->dst.tclassid = itag;
 #endif
        rth->rt_iif     =
@@ -2820,7 +2820,7 @@ static int rt_fill_info(struct net *net,
        }
        if (rt->dst.dev)
                NLA_PUT_U32(skb, RTA_OIF, rt->dst.dev->ifindex);
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
        if (rt->dst.tclassid)
                NLA_PUT_U32(skb, RTA_FLOW, rt->dst.tclassid);
 #endif
@@ -3245,9 +3245,9 @@ static __net_initdata struct pernet_operations rt_genid_ops = {
 };
 
 
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
 struct ip_rt_acct __percpu *ip_rt_acct __read_mostly;
-#endif /* CONFIG_NET_CLS_ROUTE */
+#endif /* CONFIG_IP_ROUTE_CLASSID */
 
 static __initdata unsigned long rhash_entries;
 static int __init set_rhash_entries(char *str)
@@ -3263,7 +3263,7 @@ int __init ip_rt_init(void)
 {
        int rc = 0;
 
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
        ip_rt_acct = __alloc_percpu(256 * sizeof(struct ip_rt_acct), __alignof__(struct ip_rt_acct));
        if (!ip_rt_acct)
                panic("IP: failed to allocate ip_rt_acct\n");

diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig
index 1534f2b..1b79353 100644 (file)
--- a/net/netfilter/Kconfig
+++ b/net/netfilter/Kconfig
@@ -886,7 +886,7 @@ config NETFILTER_XT_MATCH_RATEEST
 config NETFILTER_XT_MATCH_REALM
        tristate  '"realm" match support'
        depends on NETFILTER_ADVANCED
-       select NET_CLS_ROUTE
+       select IP_ROUTE_CLASSID
        help
          This option adds a `realm' match, which allows you to use the realm
          key from the routing subsystem inside iptables.

diff --git a/net/sched/Kconfig b/net/sched/Kconfig
index a36270a..4b753ef 100644 (file)
--- a/net/sched/Kconfig
+++ b/net/sched/Kconfig
@@ -243,7 +243,7 @@ config NET_CLS_TCINDEX
 
 config NET_CLS_ROUTE4
        tristate "Routing decision (ROUTE)"
-       select NET_CLS_ROUTE
+       select IP_ROUTE_CLASSID
        select NET_CLS
        ---help---
          If you say Y here, you will be able to classify packets
@@ -252,9 +252,6 @@ config NET_CLS_ROUTE4
          To compile this code as a module, choose M here: the
          module will be called cls_route.
 
-config NET_CLS_ROUTE
-       bool
-
 config NET_CLS_FW
        tristate "Netfilter mark (FW)"
        select NET_CLS

diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c
index 5b271a1..a3b293d 100644 (file)
--- a/net/sched/cls_flow.c
+++ b/net/sched/cls_flow.c
@@ -276,7 +276,7 @@ fallback:
 
 static u32 flow_get_rtclassid(const struct sk_buff *skb)
 {
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
        if (skb_dst(skb))
                return skb_dst(skb)->tclassid;
 #endif

diff --git a/net/sched/em_meta.c b/net/sched/em_meta.c
index 34da5e2..0d66e58 100644 (file)
--- a/net/sched/em_meta.c
+++ b/net/sched/em_meta.c
@@ -255,7 +255,7 @@ META_COLLECTOR(int_rtclassid)
        if (unlikely(skb_dst(skb) == NULL))
                *err = -1;
        else
-#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_ROUTE_CLASSID
                dst->value = skb_dst(skb)->tclassid;
 #else
                dst->value = 0;