[CentOS-devel] The correct way to compile module
Edison Figueira Junior
efjgrub at gmail.com
Sat Feb 14 23:06:00 UTC 2015
Hi,
I need to build the module attached but do not know the right way to do,
I do not want to change the original kernel, just run this module
I downloaded the kernel.src and applied the patch and went back to generate
the RPM through SPEC, but got the following error.
CC [M] net/sched//act_connmark.o
*net/sched//act_connmark.c:* In function ‘*tcf_connmark_init*’:
*net/sched//act_connmark.c:112:2:* *error: *too few arguments to function ‘
*tcf_hash_check*’
if (!tcf_hash_check(parm->index, a, bind)) {
* ^*
In file included from *net/sched//act_connmark.c:23:0*:
*include/net/act_api.h:93:20:* *note: *declared here
struct tcf_common *tcf_hash_check(u32 index, struct tc_action *a,
* ^*
*net/sched//act_connmark.c:113:3:* *error: *too few arguments to function ‘
*tcf_hash_create*’
ret = tcf_hash_create(parm->index, est, a, sizeof(*ci), bind);
* ^*
In file included from *net/sched//act_connmark.c:23:0*:
*include/net/act_api.h:95:20:* *note: *declared here
struct tcf_common *tcf_hash_create(u32 index, struct nlattr *est,
* ^*
*net/sched//act_connmark.c:121:3:* *warning: *passing argument 1 of ‘
*tcf_hash_insert*’ from incompatible pointer type [enabled by default]
tcf_hash_insert(a);
* ^*
In file included from *net/sched//act_connmark.c:23:0*:
*include/net/act_api.h:99:6:* *note: *expected ‘*struct tcf_common **’ but
argument is of type ‘*struct tc_action **’
void tcf_hash_insert(struct tcf_common *p, struct tcf_hashinfo *hinfo);
* ^*
*net/sched//act_connmark.c:121:3:* *error: *too few arguments to function ‘
*tcf_hash_insert*’
tcf_hash_insert(a);
* ^*
In file included from *net/sched//act_connmark.c:23:0*:
*include/net/act_api.h:99:6:* *note: *declared here
void tcf_hash_insert(struct tcf_common *p, struct tcf_hashinfo *hinfo);
* ^*
*net/sched//act_connmark.c:127:3:* *warning: *passing argument 1 of ‘
*tcf_hash_release*’ from incompatible pointer type [enabled by default]
tcf_hash_release(a, bind);
* ^*
In file included from *net/sched//act_connmark.c:23:0*:
*include/net/act_api.h:87:5:* *note: *expected ‘*struct tcf_common **’ but
argument is of type ‘*struct tc_action **’
int tcf_hash_release(struct tcf_common *p, int bind,
* ^*
*net/sched//act_connmark.c:127:3:* *error: *too few arguments to function ‘
*tcf_hash_release*’
tcf_hash_release(a, bind);
* ^*
In file included from *net/sched//act_connmark.c:23:0*:
*include/net/act_api.h:87:5:* *note: *declared here
int tcf_hash_release(struct tcf_common *p, int bind,
* ^*
*net/sched//act_connmark.c:* In function ‘*connmark_init_module*’:
*net/sched//act_connmark.c:179:2:* *error: *too many arguments to function ‘
*tcf_register_action*’
return tcf_register_action(&act_connmark_ops, CONNMARK_TAB_MASK);
* ^*
In file included from *net/sched//act_connmark.c:23:0*:
*include/net/act_api.h:101:5:* *note: *declared here
int tcf_register_action(struct tc_action_ops *a);
* ^*
make[1]: *** [net/sched//act_connmark.o] Error 1
make: *** [_module_net/sched/] Error 2
Kernel patch module
diff --git a/include/net/tc_act/tc_connmark.h
b/include/net/tc_act/tc_connmark.h
new file mode 100644
index 0000000..5c1104c
--- /dev/null
+++ b/include/net/tc_act/tc_connmark.h
@@ -0,0 +1,14 @@
+#ifndef __NET_TC_CONNMARK_H
+#define __NET_TC_CONNMARK_H
+
+#include <net/act_api.h>
+
+struct tcf_connmark_info {
+ struct tcf_common common;
+ u16 zone;
+};
+
+#define to_connmark(a) \
+ container_of(a->priv, struct tcf_connmark_info, common)
+
+#endif /* __NET_TC_CONNMARK_H */
diff --git a/include/uapi/linux/tc_act/tc_connmark.h
b/include/uapi/linux/tc_act/tc_connmark.h
new file mode 100644
index 0000000..994b097
--- /dev/null
+++ b/include/uapi/linux/tc_act/tc_connmark.h
@@ -0,0 +1,22 @@
+#ifndef __UAPI_TC_CONNMARK_H
+#define __UAPI_TC_CONNMARK_H
+
+#include <linux/types.h>
+#include <linux/pkt_cls.h>
+
+#define TCA_ACT_CONNMARK 14
+
+struct tc_connmark {
+ tc_gen;
+ __u16 zone;
+};
+
+enum {
+ TCA_CONNMARK_UNSPEC,
+ TCA_CONNMARK_PARMS,
+ TCA_CONNMARK_TM,
+ __TCA_CONNMARK_MAX
+};
+#define TCA_CONNMARK_MAX (__TCA_CONNMARK_MAX - 1)
+
+#endif
diff --git a/net/sched/Kconfig b/net/sched/Kconfig
index 4669435..475e35e 100644
--- a/net/sched/Kconfig
+++ b/net/sched/Kconfig
@@ -549,6 +549,17 @@
To compile this code as a module, choose M here: the
module will be called act_police.
+config NET_ACT_CONNMARK
+ tristate "Netfilter Connection Mark Retriever"
+ depends on NET_CLS_ACT && NETFILTER && IP_NF_IPTABLES
+ ---help---
+ Say Y here to allow retrieving of conn mark
+
+ If unsure, say N.
+
+ To compile this code as a module, choose M here: the
+ module will be called act_connmark.
+
config NET_ACT_GACT
tristate "Generic actions"
depends on NET_CLS_ACT
diff --git a/net/sched/Makefile b/net/sched/Makefile
index 7ca2b4e..7ca7f4c 100644
--- a/net/sched/Makefile
+++ b/net/sched/Makefile
+++ b/net/sched/Makefile
@@ -16,6 +16,7 @@
obj-$(CONFIG_NET_ACT_SIMP) += act_simple.o
obj-$(CONFIG_NET_ACT_SKBEDIT) += act_skbedit.o
obj-$(CONFIG_NET_ACT_CSUM) += act_csum.o
+obj-$(CONFIG_NET_ACT_CONNMARK) += act_connmark.o
obj-$(CONFIG_NET_SCH_FIFO) += sch_fifo.o
obj-$(CONFIG_NET_SCH_CBQ) += sch_cbq.o
obj-$(CONFIG_NET_SCH_HTB) += sch_htb.o
diff --git a/net/sched/act_connmark.c b/net/sched/act_connmark.c
new file mode 100644
index 0000000..8e47251
--- /dev/null
+++ b/net/sched/act_connmark.c
@@ -0,0 +1,192 @@
+/*
+ * net/sched/act_connmark.c netfilter connmark retriever action
+ * skb mark is over-written
+ *
+ * Copyright (c) 2011 Felix Fietkau <nbd at openwrt.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 <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/skbuff.h>
+#include <linux/rtnetlink.h>
+#include <linux/pkt_cls.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <net/netlink.h>
+#include <net/pkt_sched.h>
+#include <net/act_api.h>
+#include <uapi/linux/tc_act/tc_connmark.h>
+#include <net/tc_act/tc_connmark.h>
+
+#include <net/netfilter/nf_conntrack.h>
+#include <net/netfilter/nf_conntrack_core.h>
+#include <net/netfilter/nf_conntrack_zones.h>
+
+#define CONNMARK_TAB_MASK 3
+
+static int tcf_connmark(struct sk_buff *skb, const struct tc_action *a,
+ struct tcf_result *res)
+{
+ const struct nf_conntrack_tuple_hash *thash;
+ struct nf_conntrack_tuple tuple;
+ enum ip_conntrack_info ctinfo;
+ struct tcf_connmark_info *ca = a->priv;
+ struct nf_conn *c;
+ int proto;
+
+ spin_lock(&ca->tcf_lock);
+ ca->tcf_tm.lastuse = jiffies;
+ bstats_update(&ca->tcf_bstats, skb);
+
+ if (skb->protocol == htons(ETH_P_IP)) {
+ if (skb->len < sizeof(struct iphdr))
+ goto out;
+
+ proto = NFPROTO_IPV4;
+ } else if (skb->protocol == htons(ETH_P_IPV6)) {
+ if (skb->len < sizeof(struct ipv6hdr))
+ goto out;
+
+ proto = NFPROTO_IPV6;
+ } else {
+ goto out;
+ }
+
+ c = nf_ct_get(skb, &ctinfo);
+ if (c) {
+ skb->mark = c->mark;
+ /* using overlimits stats to count how many packets marked
*/
+ ca->tcf_qstats.overlimits++;
+ nf_ct_put(c);
+ goto out;
+ }
+
+ if (!nf_ct_get_tuplepr(skb, skb_network_offset(skb),
+ proto, &tuple))
+ goto out;
+
+ thash = nf_conntrack_find_get(dev_net(skb->dev), ca->zone, &tuple);
+ if (!thash)
+ goto out;
+
+ c = nf_ct_tuplehash_to_ctrack(thash);
+ /* using overlimits stats to count how many packets marked */
+ ca->tcf_qstats.overlimits++;
+ skb->mark = c->mark;
+ nf_ct_put(c);
+
+out:
+ skb->nfct = NULL;
+ spin_unlock(&ca->tcf_lock);
+ return ca->tcf_action;
+}
+
+static const struct nla_policy connmark_policy[TCA_CONNMARK_MAX + 1] = {
+ [TCA_CONNMARK_PARMS] = { .len = sizeof(struct tc_connmark) },
+};
+
+static int tcf_connmark_init(struct net *net, struct nlattr *nla,
+ struct nlattr *est, struct tc_action *a,
+ int ovr, int bind)
+{
+ struct nlattr *tb[TCA_CONNMARK_MAX + 1];
+ struct tcf_connmark_info *ci;
+ struct tc_connmark *parm;
+ int ret = 0;
+
+ if (!nla)
+ return -EINVAL;
+
+ ret = nla_parse_nested(tb, TCA_CONNMARK_MAX, nla, connmark_policy);
+ if (ret < 0)
+ return ret;
+
+ parm = nla_data(tb[TCA_CONNMARK_PARMS]);
+
+ if (!tcf_hash_check(parm->index, a, bind)) {
+ ret = tcf_hash_create(parm->index, est, a, sizeof(*ci),
bind);
+ if (ret)
+ return ret;
+
+
+ ci = to_connmark(a);
+ ci->tcf_action = parm->action;
+ ci->zone = parm->zone;
+
+ tcf_hash_insert(a);
+ ret = ACT_P_CREATED;
+ } else {
+ ci = to_connmark(a);
+ if (bind)
+ return 0;
+ tcf_hash_release(a, bind);
+ if (!ovr)
+ return -EEXIST;
+ /* replacing action and zone */
+ ci->tcf_action = parm->action;
+ ci->zone = parm->zone;
+ }
+
+ return ret;
+}
+
+static inline int tcf_connmark_dump(struct sk_buff *skb, struct tc_action
*a,
+ int bind, int ref)
+{
+ unsigned char *b = skb_tail_pointer(skb);
+ struct tcf_connmark_info *ci = a->priv;
+
+ struct tc_connmark opt = {
+ .index = ci->tcf_index,
+ .refcnt = ci->tcf_refcnt - ref,
+ .bindcnt = ci->tcf_bindcnt - bind,
+ .action = ci->tcf_action,
+ .zone = ci->zone,
+ };
+ struct tcf_t t;
+
+ if (nla_put(skb, TCA_CONNMARK_PARMS, sizeof(opt), &opt))
+ goto nla_put_failure;
+
+ t.install = jiffies_to_clock_t(jiffies - ci->tcf_tm.install);
+ t.lastuse = jiffies_to_clock_t(jiffies - ci->tcf_tm.lastuse);
+ t.expires = jiffies_to_clock_t(ci->tcf_tm.expires);
+ if (nla_put(skb, TCA_CONNMARK_TM, sizeof(t), &t))
+ goto nla_put_failure;
+
+ return skb->len;
+nla_put_failure:
+ nlmsg_trim(skb, b);
+ return -1;
+}
+
+static struct tc_action_ops act_connmark_ops = {
+ .kind = "connmark",
+ .type = TCA_ACT_CONNMARK,
+ .owner = THIS_MODULE,
+ .act = tcf_connmark,
+ .dump = tcf_connmark_dump,
+ .init = tcf_connmark_init,
+};
+
+static int __init connmark_init_module(void)
+{
+ return tcf_register_action(&act_connmark_ops, CONNMARK_TAB_MASK);
+}
+
+static void __exit connmark_cleanup_module(void)
+{
+ tcf_unregister_action(&act_connmark_ops);
+}
+
+module_init(connmark_init_module);
+module_exit(connmark_cleanup_module);
+MODULE_AUTHOR("Felix Fietkau <nbd at openwrt.org>");
+MODULE_DESCRIPTION("Connection tracking mark restoring");
+MODULE_LICENSE("GPL");
+
--
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