From b199742d735d79551258e50a02b7cc2e88738b2e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maciej=20=C5=BBenczykowski?= <maze@google.com>
Date: Wed, 20 Jan 2021 14:31:50 -0800
Subject: [PATCH] add placeholder ebpf programs for XDP tethering
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Test: atest, TreeHugger, the programs load
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: Idcacf0502719336c1b6a959fe6b782f2bce9d6b5
---
 Tethering/bpf_progs/offload.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/Tethering/bpf_progs/offload.c b/Tethering/bpf_progs/offload.c
index 9d2aec45f4..cce94ee5d8 100644
--- a/Tethering/bpf_progs/offload.c
+++ b/Tethering/bpf_progs/offload.c
@@ -293,5 +293,30 @@ DEFINE_BPF_PROG("schedcls/tether_upstream4_rawip", AID_ROOT, AID_NETWORK_STACK,
     return TC_ACT_OK;
 }
 
+// ----- XDP Support -----
+
+#define DEFINE_XDP_PROG(str, func) \
+    DEFINE_BPF_PROG_KVER(str, AID_ROOT, AID_NETWORK_STACK, func, KVER(5, 9, 0))(struct xdp_md *ctx)
+
+DEFINE_XDP_PROG("xdp/tether_downstream_ether",
+                 xdp_tether_downstream_ether) {
+    return XDP_PASS;
+}
+
+DEFINE_XDP_PROG("xdp/tether_downstream_rawip",
+                 xdp_tether_downstream_rawip) {
+    return XDP_PASS;
+}
+
+DEFINE_XDP_PROG("xdp/tether_upstream_ether",
+                 xdp_tether_upstream_ether) {
+    return XDP_PASS;
+}
+
+DEFINE_XDP_PROG("xdp/tether_upstream_rawip",
+                 xdp_tether_upstream_rawip) {
+    return XDP_PASS;
+}
+
 LICENSE("Apache 2.0");
 CRITICAL("netd");