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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /include/net/tc_wrapper.h
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/net/tc_wrapper.h')
-rw-r--r--include/net/tc_wrapper.h236
1 files changed, 236 insertions, 0 deletions
diff --git a/include/net/tc_wrapper.h b/include/net/tc_wrapper.h
new file mode 100644
index 0000000000..a6d481b5bc
--- /dev/null
+++ b/include/net/tc_wrapper.h
@@ -0,0 +1,236 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __NET_TC_WRAPPER_H
+#define __NET_TC_WRAPPER_H
+
+#include <net/pkt_cls.h>
+
+#if IS_ENABLED(CONFIG_RETPOLINE)
+
+#include <linux/cpufeature.h>
+#include <linux/static_key.h>
+#include <linux/indirect_call_wrapper.h>
+
+#define TC_INDIRECT_SCOPE
+
+extern struct static_key_false tc_skip_wrapper;
+
+/* TC Actions */
+#ifdef CONFIG_NET_CLS_ACT
+
+#define TC_INDIRECT_ACTION_DECLARE(fname) \
+ INDIRECT_CALLABLE_DECLARE(int fname(struct sk_buff *skb, \
+ const struct tc_action *a, \
+ struct tcf_result *res))
+
+TC_INDIRECT_ACTION_DECLARE(tcf_bpf_act);
+TC_INDIRECT_ACTION_DECLARE(tcf_connmark_act);
+TC_INDIRECT_ACTION_DECLARE(tcf_csum_act);
+TC_INDIRECT_ACTION_DECLARE(tcf_ct_act);
+TC_INDIRECT_ACTION_DECLARE(tcf_ctinfo_act);
+TC_INDIRECT_ACTION_DECLARE(tcf_gact_act);
+TC_INDIRECT_ACTION_DECLARE(tcf_gate_act);
+TC_INDIRECT_ACTION_DECLARE(tcf_ife_act);
+TC_INDIRECT_ACTION_DECLARE(tcf_ipt_act);
+TC_INDIRECT_ACTION_DECLARE(tcf_mirred_act);
+TC_INDIRECT_ACTION_DECLARE(tcf_mpls_act);
+TC_INDIRECT_ACTION_DECLARE(tcf_nat_act);
+TC_INDIRECT_ACTION_DECLARE(tcf_pedit_act);
+TC_INDIRECT_ACTION_DECLARE(tcf_police_act);
+TC_INDIRECT_ACTION_DECLARE(tcf_sample_act);
+TC_INDIRECT_ACTION_DECLARE(tcf_simp_act);
+TC_INDIRECT_ACTION_DECLARE(tcf_skbedit_act);
+TC_INDIRECT_ACTION_DECLARE(tcf_skbmod_act);
+TC_INDIRECT_ACTION_DECLARE(tcf_vlan_act);
+TC_INDIRECT_ACTION_DECLARE(tunnel_key_act);
+
+static inline int tc_act(struct sk_buff *skb, const struct tc_action *a,
+ struct tcf_result *res)
+{
+ if (static_branch_likely(&tc_skip_wrapper))
+ goto skip;
+
+#if IS_BUILTIN(CONFIG_NET_ACT_GACT)
+ if (a->ops->act == tcf_gact_act)
+ return tcf_gact_act(skb, a, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_ACT_MIRRED)
+ if (a->ops->act == tcf_mirred_act)
+ return tcf_mirred_act(skb, a, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_ACT_PEDIT)
+ if (a->ops->act == tcf_pedit_act)
+ return tcf_pedit_act(skb, a, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_ACT_SKBEDIT)
+ if (a->ops->act == tcf_skbedit_act)
+ return tcf_skbedit_act(skb, a, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_ACT_SKBMOD)
+ if (a->ops->act == tcf_skbmod_act)
+ return tcf_skbmod_act(skb, a, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_ACT_POLICE)
+ if (a->ops->act == tcf_police_act)
+ return tcf_police_act(skb, a, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_ACT_BPF)
+ if (a->ops->act == tcf_bpf_act)
+ return tcf_bpf_act(skb, a, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_ACT_CONNMARK)
+ if (a->ops->act == tcf_connmark_act)
+ return tcf_connmark_act(skb, a, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_ACT_CSUM)
+ if (a->ops->act == tcf_csum_act)
+ return tcf_csum_act(skb, a, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_ACT_CT)
+ if (a->ops->act == tcf_ct_act)
+ return tcf_ct_act(skb, a, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_ACT_CTINFO)
+ if (a->ops->act == tcf_ctinfo_act)
+ return tcf_ctinfo_act(skb, a, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_ACT_GATE)
+ if (a->ops->act == tcf_gate_act)
+ return tcf_gate_act(skb, a, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_ACT_MPLS)
+ if (a->ops->act == tcf_mpls_act)
+ return tcf_mpls_act(skb, a, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_ACT_NAT)
+ if (a->ops->act == tcf_nat_act)
+ return tcf_nat_act(skb, a, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_ACT_TUNNEL_KEY)
+ if (a->ops->act == tunnel_key_act)
+ return tunnel_key_act(skb, a, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_ACT_VLAN)
+ if (a->ops->act == tcf_vlan_act)
+ return tcf_vlan_act(skb, a, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_ACT_IFE)
+ if (a->ops->act == tcf_ife_act)
+ return tcf_ife_act(skb, a, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_ACT_IPT)
+ if (a->ops->act == tcf_ipt_act)
+ return tcf_ipt_act(skb, a, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_ACT_SIMP)
+ if (a->ops->act == tcf_simp_act)
+ return tcf_simp_act(skb, a, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_ACT_SAMPLE)
+ if (a->ops->act == tcf_sample_act)
+ return tcf_sample_act(skb, a, res);
+#endif
+
+skip:
+ return a->ops->act(skb, a, res);
+}
+
+#endif /* CONFIG_NET_CLS_ACT */
+
+/* TC Filters */
+#ifdef CONFIG_NET_CLS
+
+#define TC_INDIRECT_FILTER_DECLARE(fname) \
+ INDIRECT_CALLABLE_DECLARE(int fname(struct sk_buff *skb, \
+ const struct tcf_proto *tp, \
+ struct tcf_result *res))
+
+TC_INDIRECT_FILTER_DECLARE(basic_classify);
+TC_INDIRECT_FILTER_DECLARE(cls_bpf_classify);
+TC_INDIRECT_FILTER_DECLARE(cls_cgroup_classify);
+TC_INDIRECT_FILTER_DECLARE(fl_classify);
+TC_INDIRECT_FILTER_DECLARE(flow_classify);
+TC_INDIRECT_FILTER_DECLARE(fw_classify);
+TC_INDIRECT_FILTER_DECLARE(mall_classify);
+TC_INDIRECT_FILTER_DECLARE(route4_classify);
+TC_INDIRECT_FILTER_DECLARE(u32_classify);
+
+static inline int tc_classify(struct sk_buff *skb, const struct tcf_proto *tp,
+ struct tcf_result *res)
+{
+ if (static_branch_likely(&tc_skip_wrapper))
+ goto skip;
+
+#if IS_BUILTIN(CONFIG_NET_CLS_BPF)
+ if (tp->classify == cls_bpf_classify)
+ return cls_bpf_classify(skb, tp, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_CLS_U32)
+ if (tp->classify == u32_classify)
+ return u32_classify(skb, tp, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_CLS_FLOWER)
+ if (tp->classify == fl_classify)
+ return fl_classify(skb, tp, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_CLS_FW)
+ if (tp->classify == fw_classify)
+ return fw_classify(skb, tp, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_CLS_MATCHALL)
+ if (tp->classify == mall_classify)
+ return mall_classify(skb, tp, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_CLS_BASIC)
+ if (tp->classify == basic_classify)
+ return basic_classify(skb, tp, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_CLS_CGROUP)
+ if (tp->classify == cls_cgroup_classify)
+ return cls_cgroup_classify(skb, tp, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_CLS_FLOW)
+ if (tp->classify == flow_classify)
+ return flow_classify(skb, tp, res);
+#endif
+#if IS_BUILTIN(CONFIG_NET_CLS_ROUTE4)
+ if (tp->classify == route4_classify)
+ return route4_classify(skb, tp, res);
+#endif
+
+skip:
+ return tp->classify(skb, tp, res);
+}
+
+#endif /* CONFIG_NET_CLS */
+
+static inline void tc_wrapper_init(void)
+{
+#ifdef CONFIG_X86
+ if (!cpu_feature_enabled(X86_FEATURE_RETPOLINE))
+ static_branch_enable(&tc_skip_wrapper);
+#endif
+}
+
+#else
+
+#define TC_INDIRECT_SCOPE static
+
+static inline int tc_act(struct sk_buff *skb, const struct tc_action *a,
+ struct tcf_result *res)
+{
+ return a->ops->act(skb, a, res);
+}
+
+static inline int tc_classify(struct sk_buff *skb, const struct tcf_proto *tp,
+ struct tcf_result *res)
+{
+ return tp->classify(skb, tp, res);
+}
+
+static inline void tc_wrapper_init(void)
+{
+}
+
+#endif
+
+#endif /* __NET_TC_WRAPPER_H */