-From d129a72f465dab2d9fc8f1580c38600a8b808327 Mon Sep 17 00:00:00 2001
-From: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
-Date: Wed, 13 Mar 2019 20:54:49 +0000
-Subject: [PATCH] net: sched: Backport Introduce act_ctinfo action
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-ctinfo is a new tc filter action module. It is designed to restore
-information contained in firewall conntrack marks to other packet fields
-and is typically used on packet ingress paths. At present it has two
-independent sub-functions or operating modes, DSCP restoration mode &
-skb mark restoration mode.
-
-The DSCP restore mode:
-
-This mode copies DSCP values that have been placed in the firewall
-conntrack mark back into the IPv4/v6 diffserv fields of relevant
-packets.
-
-The DSCP restoration is intended for use and has been found useful for
-restoring ingress classifications based on egress classifications across
-links that bleach or otherwise change DSCP, typically home ISP Internet
-links. Restoring DSCP on ingress on the WAN link allows qdiscs such as
-but by no means limited to CAKE to shape inbound packets according to
-policies that are easier to set & mark on egress.
-
-Ingress classification is traditionally a challenging task since
-iptables rules haven't yet run and tc filter/eBPF programs are pre-NAT
-lookups, hence are unable to see internal IPv4 addresses as used on the
-typical home masquerading gateway. Thus marking the connection in some
-manner on egress for later restoration of classification on ingress is
-easier to implement.
-
-Parameters related to DSCP restore mode:
-
-dscpmask - a 32 bit mask of 6 contiguous bits and indicate bits of the
-conntrack mark field contain the DSCP value to be restored.
-
-statemask - a 32 bit mask of (usually) 1 bit length, outside the area
-specified by dscpmask. This represents a conditional operation flag
-whereby the DSCP is only restored if the flag is set. This is useful to
-implement a 'one shot' iptables based classification where the
-'complicated' iptables rules are only run once to classify the
-connection on initial (egress) packet and subsequent packets are all
-marked/restored with the same DSCP. A mask of zero disables the
-conditional behaviour ie. the conntrack mark DSCP bits are always
-restored to the ip diffserv field (assuming the conntrack entry is found
-& the skb is an ipv4/ipv6 type)
-
-e.g. dscpmask 0xfc000000 statemask 0x01000000
-
-|----0xFC----conntrack mark----000000---|
-| Bits 31-26 | bit 25 | bit24 |~~~ Bit 0|
-| DSCP | unused | flag |unused |
-|-----------------------0x01---000000---|
- | |
- | |
- ---| Conditional flag
- v only restore if set
-|-ip diffserv-|
-| 6 bits |
-|-------------|
-
-The skb mark restore mode (cpmark):
-
-This mode copies the firewall conntrack mark to the skb's mark field.
-It is completely the functional equivalent of the existing act_connmark
-action with the additional feature of being able to apply a mask to the
-restored value.
-
-Parameters related to skb mark restore mode:
-
-mask - a 32 bit mask applied to the firewall conntrack mark to mask out
-bits unwanted for restoration. This can be useful where the conntrack
-mark is being used for different purposes by different applications. If
-not specified and by default the whole mark field is copied (i.e.
-default mask of 0xffffffff)
-
-e.g. mask 0x00ffffff to mask out the top 8 bits being used by the
-aforementioned DSCP restore mode.
-
-|----0x00----conntrack mark----ffffff---|
-| Bits 31-24 | |
-| DSCP & flag| some value here |
-|---------------------------------------|
- |
- |
- v
-|------------skb mark-------------------|
-| | |
-| zeroed | |
-|---------------------------------------|
-
-Overall parameters:
-
-zone - conntrack zone
-
-control - action related control (reclassify | pipe | drop | continue |
-ok | goto chain <CHAIN_INDEX>)
-
-Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
-Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com>
-Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
-Signed-off-by: David S. Miller <davem@davemloft.net>
-
-Backport
-Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
----
- include/net/tc_act/tc_ctinfo.h | 33 ++
- include/uapi/linux/pkt_cls.h | 3 +-
- include/uapi/linux/tc_act/tc_ctinfo.h | 29 ++
- net/sched/Kconfig | 17 +
- net/sched/Makefile | 1 +
- net/sched/act_ctinfo.c | 420 ++++++++++++++++++++++
- tools/testing/selftests/tc-testing/config | 1 +
- 7 files changed, 503 insertions(+), 1 deletion(-)
- create mode 100644 include/net/tc_act/tc_ctinfo.h
- create mode 100644 include/uapi/linux/tc_act/tc_ctinfo.h
- create mode 100644 net/sched/act_ctinfo.c
-
---- /dev/null
-+++ b/include/net/tc_act/tc_ctinfo.h
-@@ -0,0 +1,33 @@
-+/* SPDX-License-Identifier: GPL-2.0 */
-+#ifndef __NET_TC_CTINFO_H
-+#define __NET_TC_CTINFO_H
-+
-+#include <net/act_api.h>
-+
-+struct tcf_ctinfo_params {
-+ struct rcu_head rcu;
-+ struct net *net;
-+ u32 dscpmask;
-+ u32 dscpstatemask;
-+ u32 cpmarkmask;
-+ u16 zone;
-+ u8 mode;
-+ u8 dscpmaskshift;
-+};
-+
-+struct tcf_ctinfo {
-+ struct tc_action common;
-+ struct tcf_ctinfo_params __rcu *params;
-+ u64 stats_dscp_set;
-+ u64 stats_dscp_error;
-+ u64 stats_cpmark_set;
-+};
-+
-+enum {
-+ CTINFO_MODE_DSCP = BIT(0),
-+ CTINFO_MODE_CPMARK = BIT(1)
-+};
-+
-+#define to_ctinfo(a) ((struct tcf_ctinfo *)a)
-+
-+#endif /* __NET_TC_CTINFO_H */
---- a/include/uapi/linux/pkt_cls.h
-+++ b/include/uapi/linux/pkt_cls.h
-@@ -68,7 +68,8 @@ enum {
- TCA_ID_UNSPEC=0,
- TCA_ID_POLICE=1,
- /* other actions go here */
-- __TCA_ID_MAX=255
-+ TCA_ID_CTINFO,
-+ __TCA_ID_MAX = 255
- };
-
- #define TCA_ID_MAX __TCA_ID_MAX
---- /dev/null
-+++ b/include/uapi/linux/tc_act/tc_ctinfo.h
-@@ -0,0 +1,29 @@
-+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-+#ifndef __UAPI_TC_CTINFO_H
-+#define __UAPI_TC_CTINFO_H
-+
-+#include <linux/types.h>
-+#include <linux/pkt_cls.h>
-+
-+struct tc_ctinfo {
-+ tc_gen;
-+};
-+
-+enum {
-+ TCA_CTINFO_UNSPEC,
-+ TCA_CTINFO_PAD,
-+ TCA_CTINFO_TM,
-+ TCA_CTINFO_ACT,
-+ TCA_CTINFO_ZONE,
-+ TCA_CTINFO_PARMS_DSCP_MASK,
-+ TCA_CTINFO_PARMS_DSCP_STATEMASK,
-+ TCA_CTINFO_PARMS_CPMARK_MASK,
-+ TCA_CTINFO_STATS_DSCP_SET,
-+ TCA_CTINFO_STATS_DSCP_ERROR,
-+ TCA_CTINFO_STATS_CPMARK_SET,
-+ __TCA_CTINFO_MAX
-+};
-+
-+#define TCA_CTINFO_MAX (__TCA_CTINFO_MAX - 1)
-+
-+#endif
---- a/net/sched/Kconfig
-+++ b/net/sched/Kconfig
-@@ -866,6 +866,23 @@ config NET_ACT_CONNMARK
- To compile this code as a module, choose M here: the
- module will be called act_connmark.
-
-+config NET_ACT_CTINFO
-+ tristate "Netfilter Connection Mark Actions"
-+ depends on NET_CLS_ACT && NETFILTER && IP_NF_IPTABLES
-+ depends on NF_CONNTRACK && NF_CONNTRACK_MARK
-+ help
-+ Say Y here to allow transfer of a connmark stored information.
-+ Current actions transfer connmark stored DSCP into
-+ ipv4/v6 diffserv and/or to transfer connmark to packet
-+ mark. Both are useful for restoring egress based marks
-+ back onto ingress connections for qdisc priority mapping
-+ purposes.
-+
-+ If unsure, say N.
-+
-+ To compile this code as a module, choose M here: the
-+ module will be called act_ctinfo.
-+
- config NET_ACT_SKBMOD
- tristate "skb data modification action"
- depends on NET_CLS_ACT
---- a/net/sched/Makefile
-+++ b/net/sched/Makefile
-@@ -21,6 +21,7 @@ obj-$(CONFIG_NET_ACT_CSUM) += act_csum.o
- obj-$(CONFIG_NET_ACT_VLAN) += act_vlan.o
- obj-$(CONFIG_NET_ACT_BPF) += act_bpf.o
- obj-$(CONFIG_NET_ACT_CONNMARK) += act_connmark.o
-+obj-$(CONFIG_NET_ACT_CTINFO) += act_ctinfo.o
- obj-$(CONFIG_NET_ACT_SKBMOD) += act_skbmod.o
- obj-$(CONFIG_NET_ACT_IFE) += act_ife.o
- obj-$(CONFIG_NET_IFE_SKBMARK) += act_meta_mark.o
---- /dev/null
-+++ b/net/sched/act_ctinfo.c
-@@ -0,0 +1,420 @@
-+// SPDX-License-Identifier: GPL-2.0+
-+/* net/sched/act_ctinfo.c netfilter ctinfo connmark actions
-+ *
-+ * Copyright (c) 2019 Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
-+ */
-+
-+#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 <net/pkt_cls.h>
-+#include <uapi/linux/tc_act/tc_ctinfo.h>
-+#include <net/tc_act/tc_ctinfo.h>
-+
-+#include <net/netfilter/nf_conntrack.h>
-+#include <net/netfilter/nf_conntrack_core.h>
-+#include <net/netfilter/nf_conntrack_ecache.h>
-+#include <net/netfilter/nf_conntrack_zones.h>
-+
-+static struct tc_action_ops act_ctinfo_ops;
-+static unsigned int ctinfo_net_id;
-+
-+static void tcf_ctinfo_dscp_set(struct nf_conn *ct, struct tcf_ctinfo *ca,
-+ struct tcf_ctinfo_params *cp,
-+ struct sk_buff *skb, int wlen, int proto)
-+{
-+ u8 dscp, newdscp;
-+
-+ newdscp = (((ct->mark & cp->dscpmask) >> cp->dscpmaskshift) << 2) &
-+ ~INET_ECN_MASK;
-+
-+ switch (proto) {
-+ case NFPROTO_IPV4:
-+ dscp = ipv4_get_dsfield(ip_hdr(skb)) & ~INET_ECN_MASK;
-+ if (dscp != newdscp) {
-+ if (likely(!skb_try_make_writable(skb, wlen))) {
-+ ipv4_change_dsfield(ip_hdr(skb),
-+ INET_ECN_MASK,
-+ newdscp);
-+ ca->stats_dscp_set++;
-+ } else {
-+ ca->stats_dscp_error++;
-+ }
-+ }
-+ break;
-+ case NFPROTO_IPV6:
-+ dscp = ipv6_get_dsfield(ipv6_hdr(skb)) & ~INET_ECN_MASK;
-+ if (dscp != newdscp) {
-+ if (likely(!skb_try_make_writable(skb, wlen))) {
-+ ipv6_change_dsfield(ipv6_hdr(skb),
-+ INET_ECN_MASK,
-+ newdscp);
-+ ca->stats_dscp_set++;
-+ } else {
-+ ca->stats_dscp_error++;
-+ }
-+ }
-+ break;
-+ default:
-+ break;
-+ }
-+}
-+
-+static void tcf_ctinfo_cpmark_set(struct nf_conn *ct, struct tcf_ctinfo *ca,
-+ struct tcf_ctinfo_params *cp,
-+ struct sk_buff *skb)
-+{
-+ ca->stats_cpmark_set++;
-+ skb->mark = ct->mark & cp->cpmarkmask;
-+}
-+
-+static int tcf_ctinfo_act(struct sk_buff *skb, const struct tc_action *a,
-+ struct tcf_result *res)
-+{
-+ const struct nf_conntrack_tuple_hash *thash = NULL;
-+ struct tcf_ctinfo *ca = to_ctinfo(a);
-+ struct nf_conntrack_tuple tuple;
-+ struct nf_conntrack_zone zone;
-+ enum ip_conntrack_info ctinfo;
-+ struct tcf_ctinfo_params *cp;
-+ struct nf_conn *ct;
-+ int proto, wlen;
-+ int action;
-+
-+ cp = rcu_dereference_bh(ca->params);
-+
-+ tcf_lastuse_update(&ca->tcf_tm);
-+ bstats_update(&ca->tcf_bstats, skb);
-+ action = READ_ONCE(ca->tcf_action);
-+
-+ wlen = skb_network_offset(skb);
-+ if (tc_skb_protocol(skb) == htons(ETH_P_IP)) {
-+ wlen += sizeof(struct iphdr);
-+ if (!pskb_may_pull(skb, wlen))
-+ goto out;
-+
-+ proto = NFPROTO_IPV4;
-+ } else if (tc_skb_protocol(skb) == htons(ETH_P_IPV6)) {
-+ wlen += sizeof(struct ipv6hdr);
-+ if (!pskb_may_pull(skb, wlen))
-+ goto out;
-+
-+ proto = NFPROTO_IPV6;
-+ } else {
-+ goto out;
-+ }
-+
-+ ct = nf_ct_get(skb, &ctinfo);
-+ if (!ct) { /* look harder, usually ingress */
-+ if (!nf_ct_get_tuplepr(skb, skb_network_offset(skb),
-+ proto, cp->net, &tuple))
-+ goto out;
-+ zone.id = cp->zone;
-+ zone.dir = NF_CT_DEFAULT_ZONE_DIR;
-+
-+ thash = nf_conntrack_find_get(cp->net, &zone, &tuple);
-+ if (!thash)
-+ goto out;
-+
-+ ct = nf_ct_tuplehash_to_ctrack(thash);
-+ }
-+
-+ if (cp->mode & CTINFO_MODE_DSCP)
-+ if (!cp->dscpstatemask || (ct->mark & cp->dscpstatemask))
-+ tcf_ctinfo_dscp_set(ct, ca, cp, skb, wlen, proto);
-+
-+ if (cp->mode & CTINFO_MODE_CPMARK)
-+ tcf_ctinfo_cpmark_set(ct, ca, cp, skb);
-+
-+ if (thash)
-+ nf_ct_put(ct);
-+out:
-+ return action;
-+}
-+
-+static const struct nla_policy ctinfo_policy[TCA_CTINFO_MAX + 1] = {
-+ [TCA_CTINFO_ACT] = { .len = sizeof(struct
-+ tc_ctinfo) },
-+ [TCA_CTINFO_ZONE] = { .type = NLA_U16 },
-+ [TCA_CTINFO_PARMS_DSCP_MASK] = { .type = NLA_U32 },
-+ [TCA_CTINFO_PARMS_DSCP_STATEMASK] = { .type = NLA_U32 },
-+ [TCA_CTINFO_PARMS_CPMARK_MASK] = { .type = NLA_U32 },
-+};
-+
-+static int tcf_ctinfo_init(struct net *net, struct nlattr *nla,
-+ struct nlattr *est, struct tc_action **a,
-+ int ovr, int bind, bool rtnl_held,
-+ struct netlink_ext_ack *extack)
-+{
-+ struct tc_action_net *tn = net_generic(net, ctinfo_net_id);
-+ u32 dscpmask = 0, dscpstatemask, index;
-+ struct nlattr *tb[TCA_CTINFO_MAX + 1];
-+ struct tcf_ctinfo_params *cp_new;
-+/* struct tcf_chain *goto_ch = NULL; */
-+ struct tc_ctinfo *actparm;
-+ struct tcf_ctinfo *ci;
-+ u8 dscpmaskshift;
-+ int ret = 0, err;
-+
-+ if (!nla) {
-+ NL_SET_ERR_MSG_MOD(extack, "ctinfo requires attributes to be passed");
-+ return -EINVAL;
-+ }
-+
-+ err = nla_parse_nested(tb, TCA_CTINFO_MAX, nla, ctinfo_policy, extack);
-+ if (err < 0)
-+ return err;
-+
-+ if (!tb[TCA_CTINFO_ACT]) {
-+ NL_SET_ERR_MSG_MOD(extack,
-+ "Missing required TCA_CTINFO_ACT attribute");
-+ return -EINVAL;
-+ }
-+ actparm = nla_data(tb[TCA_CTINFO_ACT]);
-+
-+ /* do some basic validation here before dynamically allocating things */
-+ /* that we would otherwise have to clean up. */
-+ if (tb[TCA_CTINFO_PARMS_DSCP_MASK]) {
-+ dscpmask = nla_get_u32(tb[TCA_CTINFO_PARMS_DSCP_MASK]);
-+ /* need contiguous 6 bit mask */
-+ dscpmaskshift = dscpmask ? __ffs(dscpmask) : 0;
-+ if ((~0 & (dscpmask >> dscpmaskshift)) != 0x3f) {
-+ NL_SET_ERR_MSG_ATTR(extack,
-+ tb[TCA_CTINFO_PARMS_DSCP_MASK],
-+ "dscp mask must be 6 contiguous bits");
-+ return -EINVAL;
-+ }
-+ dscpstatemask = tb[TCA_CTINFO_PARMS_DSCP_STATEMASK] ?
-+ nla_get_u32(tb[TCA_CTINFO_PARMS_DSCP_STATEMASK]) : 0;
-+ /* mask & statemask must not overlap */
-+ if (dscpmask & dscpstatemask) {
-+ NL_SET_ERR_MSG_ATTR(extack,
-+ tb[TCA_CTINFO_PARMS_DSCP_STATEMASK],
-+ "dscp statemask must not overlap dscp mask");
-+ return -EINVAL;
-+ }
-+ }
-+
-+ /* done the validation:now to the actual action allocation */
-+ index = actparm->index;
-+ err = tcf_idr_check_alloc(tn, &index, a, bind);
-+ if (!err) {
-+ ret = tcf_idr_create(tn, index, est, a,
-+ &act_ctinfo_ops, bind, false);
-+ if (ret) {
-+ tcf_idr_cleanup(tn, index);
-+ return ret;
-+ }
-+ ret = ACT_P_CREATED;
-+ } else if (err > 0) {
-+ if (bind) /* don't override defaults */
-+ return 0;
-+ if (!ovr) {
-+ tcf_idr_release(*a, bind);
-+ return -EEXIST;
-+ }
-+ } else {
-+ return err;
-+ }
-+
-+/* err = tcf_action_check_ctrlact(actparm->action, tp, &goto_ch, extack);
-+ if (err < 0)
-+ goto release_idr;
-+ */
-+
-+ ci = to_ctinfo(*a);
-+
-+ cp_new = kzalloc(sizeof(*cp_new), GFP_KERNEL);
-+ if (unlikely(!cp_new)) {
-+ err = -ENOMEM;
-+ goto put_chain;
-+ }
-+
-+ cp_new->net = net;
-+ cp_new->zone = tb[TCA_CTINFO_ZONE] ?
-+ nla_get_u16(tb[TCA_CTINFO_ZONE]) : 0;
-+ if (dscpmask) {
-+ cp_new->dscpmask = dscpmask;
-+ cp_new->dscpmaskshift = dscpmaskshift;
-+ cp_new->dscpstatemask = dscpstatemask;
-+ cp_new->mode |= CTINFO_MODE_DSCP;
-+ }
-+
-+ if (tb[TCA_CTINFO_PARMS_CPMARK_MASK]) {
-+ cp_new->cpmarkmask =
-+ nla_get_u32(tb[TCA_CTINFO_PARMS_CPMARK_MASK]);
-+ cp_new->mode |= CTINFO_MODE_CPMARK;
-+ }
-+
-+ spin_lock_bh(&ci->tcf_lock);
-+/* goto_ch = tcf_action_set_ctrlact(*a, actparm->action, goto_ch); */
-+ ci->tcf_action = actparm->action;
-+ rcu_swap_protected(ci->params, cp_new,
-+ lockdep_is_held(&ci->tcf_lock));
-+ spin_unlock_bh(&ci->tcf_lock);
-+
-+/* if (goto_ch)
-+ tcf_chain_put_by_act(goto_ch); */
-+ if (cp_new)
-+ kfree_rcu(cp_new, rcu);
-+
-+ if (ret == ACT_P_CREATED)
-+ tcf_idr_insert(tn, *a);
-+
-+ return ret;
-+
-+put_chain:
-+/* if (goto_ch)
-+ tcf_chain_put_by_act(goto_ch);
-+release_idr: */
-+ tcf_idr_release(*a, bind);
-+ return err;
-+}
-+
-+static int tcf_ctinfo_dump(struct sk_buff *skb, struct tc_action *a,
-+ int bind, int ref)
-+{
-+ struct tcf_ctinfo *ci = to_ctinfo(a);
-+ struct tc_ctinfo opt = {
-+ .index = ci->tcf_index,
-+ .refcnt = refcount_read(&ci->tcf_refcnt) - ref,
-+ .bindcnt = atomic_read(&ci->tcf_bindcnt) - bind,
-+ };
-+ unsigned char *b = skb_tail_pointer(skb);
-+ struct tcf_ctinfo_params *cp;
-+ struct tcf_t t;
-+
-+ spin_lock_bh(&ci->tcf_lock);
-+ cp = rcu_dereference_protected(ci->params,
-+ lockdep_is_held(&ci->tcf_lock));
-+
-+ tcf_tm_dump(&t, &ci->tcf_tm);
-+ if (nla_put_64bit(skb, TCA_CTINFO_TM, sizeof(t), &t, TCA_CTINFO_PAD))
-+ goto nla_put_failure;
-+
-+ opt.action = ci->tcf_action;
-+ if (nla_put(skb, TCA_CTINFO_ACT, sizeof(opt), &opt))
-+ goto nla_put_failure;
-+
-+ if (nla_put_u16(skb, TCA_CTINFO_ZONE, cp->zone))
-+ goto nla_put_failure;
-+
-+ if (cp->mode & CTINFO_MODE_DSCP) {
-+ if (nla_put_u32(skb, TCA_CTINFO_PARMS_DSCP_MASK,
-+ cp->dscpmask))
-+ goto nla_put_failure;
-+ if (nla_put_u32(skb, TCA_CTINFO_PARMS_DSCP_STATEMASK,
-+ cp->dscpstatemask))
-+ goto nla_put_failure;
-+ }
-+
-+ if (cp->mode & CTINFO_MODE_CPMARK) {
-+ if (nla_put_u32(skb, TCA_CTINFO_PARMS_CPMARK_MASK,
-+ cp->cpmarkmask))
-+ goto nla_put_failure;
-+ }
-+
-+ if (nla_put_u64_64bit(skb, TCA_CTINFO_STATS_DSCP_SET,
-+ ci->stats_dscp_set, TCA_CTINFO_PAD))
-+ goto nla_put_failure;
-+
-+ if (nla_put_u64_64bit(skb, TCA_CTINFO_STATS_DSCP_ERROR,
-+ ci->stats_dscp_error, TCA_CTINFO_PAD))
-+ goto nla_put_failure;
-+
-+ if (nla_put_u64_64bit(skb, TCA_CTINFO_STATS_CPMARK_SET,
-+ ci->stats_cpmark_set, TCA_CTINFO_PAD))
-+ goto nla_put_failure;
-+
-+ spin_unlock_bh(&ci->tcf_lock);
-+ return skb->len;
-+
-+nla_put_failure:
-+ spin_unlock_bh(&ci->tcf_lock);
-+ nlmsg_trim(skb, b);
-+ return -1;
-+}
-+
-+static int tcf_ctinfo_walker(struct net *net, struct sk_buff *skb,
-+ struct netlink_callback *cb, int type,
-+ const struct tc_action_ops *ops,
-+ struct netlink_ext_ack *extack)
-+{
-+ struct tc_action_net *tn = net_generic(net, ctinfo_net_id);
-+
-+ return tcf_generic_walker(tn, skb, cb, type, ops, extack);
-+}
-+
-+static int tcf_ctinfo_search(struct net *net, struct tc_action **a, u32 index,
-+ struct netlink_ext_ack *extack)
-+{
-+ struct tc_action_net *tn = net_generic(net, ctinfo_net_id);
-+
-+ return tcf_idr_search(tn, a, index);
-+}
-+
-+static void tcf_ctinfo_cleanup(struct tc_action *a)
-+{
-+ struct tcf_ctinfo *ci = to_ctinfo(a);
-+ struct tcf_ctinfo_params *cp;
-+
-+ cp = rcu_dereference_protected(ci->params, 1);
-+ if (cp)
-+ kfree_rcu(cp, rcu);
-+}
-+
-+static struct tc_action_ops act_ctinfo_ops = {
-+ .kind = "ctinfo",
-+ .type = TCA_ID_CTINFO,
-+ .owner = THIS_MODULE,
-+ .act = tcf_ctinfo_act,
-+ .dump = tcf_ctinfo_dump,
-+ .init = tcf_ctinfo_init,
-+ .walk = tcf_ctinfo_walker,
-+ .cleanup= tcf_ctinfo_cleanup,
-+ .lookup = tcf_ctinfo_search,
-+ .size = sizeof(struct tcf_ctinfo),
-+};
-+
-+static __net_init int ctinfo_init_net(struct net *net)
-+{
-+ struct tc_action_net *tn = net_generic(net, ctinfo_net_id);
-+
-+ return tc_action_net_init(net, tn, &act_ctinfo_ops);
-+}
-+
-+static void __net_exit ctinfo_exit_net(struct list_head *net_list)
-+{
-+ tc_action_net_exit(net_list, ctinfo_net_id);
-+}
-+
-+static struct pernet_operations ctinfo_net_ops = {
-+ .init = ctinfo_init_net,
-+ .exit_batch = ctinfo_exit_net,
-+ .id = &ctinfo_net_id,
-+ .size = sizeof(struct tc_action_net),
-+};
-+
-+static int __init ctinfo_init_module(void)
-+{
-+ return tcf_register_action(&act_ctinfo_ops, &ctinfo_net_ops);
-+}
-+
-+static void __exit ctinfo_cleanup_module(void)
-+{
-+ tcf_unregister_action(&act_ctinfo_ops, &ctinfo_net_ops);
-+}
-+
-+module_init(ctinfo_init_module);
-+module_exit(ctinfo_cleanup_module);
-+MODULE_AUTHOR("Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>");
-+MODULE_DESCRIPTION("Connection tracking mark actions");
-+MODULE_LICENSE("GPL");
---- a/tools/testing/selftests/tc-testing/config
-+++ b/tools/testing/selftests/tc-testing/config
-@@ -38,6 +38,7 @@ CONFIG_NET_ACT_CSUM=m
- CONFIG_NET_ACT_VLAN=m
- CONFIG_NET_ACT_BPF=m
- CONFIG_NET_ACT_CONNMARK=m
-+CONFIG_NET_ACT_CONNCTINFO=m
- CONFIG_NET_ACT_SKBMOD=m
- CONFIG_NET_ACT_IFE=m
- CONFIG_NET_ACT_TUNNEL_KEY=m
projects / openwrt / staging / jogo.git / commitdiff