From c1882a3ee342da5b41312e67f702ceef214d7afb Mon Sep 17 00:00:00 2001
From: Anil Kumar Vishnoi <vishnoianil@gmail.com>
Date: Tue, 10 May 2022 23:18:35 -0700
Subject: [PATCH] skip ebpf program

Signed-off-by: Anil Kumar Vishnoi <vishnoianil@gmail.com>
---
 bpf/mb_bind.c         | 2 ++
 bpf/mb_connect.c      | 3 +++
 bpf/mb_get_sockopts.c | 3 +++
 bpf/mb_recvmsg.c      | 3 +++
 bpf/mb_redir.c        | 3 +++
 bpf/mb_sendmsg.c      | 3 +++
 bpf/mb_sockops.c      | 3 +++
 bpf/mb_xdp.c          | 3 +++
 8 files changed, 23 insertions(+)

diff --git a/bpf/mb_bind.c b/bpf/mb_bind.c
index 80b60bbf..8d6cb6bb 100644
--- a/bpf/mb_bind.c
+++ b/bpf/mb_bind.c
@@ -23,6 +23,8 @@ limitations under the License.
 // 0.0.0.0:4140
 __section("cgroup/bind4") int mb_bind(struct bpf_sock_addr *ctx)
 {
+    debugf("cgroup/bind4 entry");
+    return 1;
 #if MESH != LINKERD
     // only works on linkerd
     return 1;
diff --git a/bpf/mb_connect.c b/bpf/mb_connect.c
index 6670b799..baefac8b 100644
--- a/bpf/mb_connect.c
+++ b/bpf/mb_connect.c
@@ -264,6 +264,9 @@ static inline int tcp4_connect(struct bpf_sock_addr *ctx)
 
 __section("cgroup/connect4") int mb_sock4_connect(struct bpf_sock_addr *ctx)
 {
+    debugf("cgroup/connect4 entry");
+    return 1;
+
     switch (ctx->protocol) {
     case IPPROTO_TCP:
         return tcp4_connect(ctx);
diff --git a/bpf/mb_get_sockopts.c b/bpf/mb_get_sockopts.c
index afb42556..119ee7f2 100644
--- a/bpf/mb_get_sockopts.c
+++ b/bpf/mb_get_sockopts.c
@@ -23,6 +23,9 @@ limitations under the License.
 
 __section("cgroup/getsockopt") int mb_get_sockopt(struct bpf_sockopt *ctx)
 {
+    debugf("cgroup/getsockopt entry");
+    return 1;
+
     // currently, eBPF can not deal with optlen more than 4096 bytes, so, we
     // should limit this.
     if (ctx->optlen > MAX_OPS_BUFF_LENGTH) {
diff --git a/bpf/mb_recvmsg.c b/bpf/mb_recvmsg.c
index aa429b54..b23c869a 100644
--- a/bpf/mb_recvmsg.c
+++ b/bpf/mb_recvmsg.c
@@ -21,6 +21,9 @@ limitations under the License.
 
 __section("cgroup/recvmsg4") int mb_recvmsg4(struct bpf_sock_addr *ctx)
 {
+    debugf("cgroup/recvmsg4 entry");
+    return 1;
+
 #if MESH != ISTIO
     // only works on istio
     return 1;
diff --git a/bpf/mb_redir.c b/bpf/mb_redir.c
index 8763e841..4b1041e2 100644
--- a/bpf/mb_redir.c
+++ b/bpf/mb_redir.c
@@ -20,6 +20,9 @@ limitations under the License.
 
 __section("sk_msg") int mb_msg_redir(struct sk_msg_md *msg)
 {
+    debugf("sk_msg entry");
+    return 1;
+
     struct pair p = {
         .dip = msg->local_ip4,
         .dport = bpf_htons(msg->local_port),
diff --git a/bpf/mb_sendmsg.c b/bpf/mb_sendmsg.c
index a9a6bb5e..0f0e3482 100644
--- a/bpf/mb_sendmsg.c
+++ b/bpf/mb_sendmsg.c
@@ -21,6 +21,9 @@ limitations under the License.
 
 __section("cgroup/sendmsg4") int mb_sendmsg4(struct bpf_sock_addr *ctx)
 {
+    debugf("cgroup/sendmsg4 entry");
+    return 1;
+
 #if MESH != ISTIO
     // only works on istio
     return 1;
diff --git a/bpf/mb_sockops.c b/bpf/mb_sockops.c
index d56d1378..1f1121da 100644
--- a/bpf/mb_sockops.c
+++ b/bpf/mb_sockops.c
@@ -70,6 +70,9 @@ static inline int sockops_ipv4(struct bpf_sock_ops *skops)
 
 __section("sockops") int mb_sockops(struct bpf_sock_ops *skops)
 {
+    debugf("sockops entry");
+    return 1;
+
     __u32 family, op;
     family = skops->family;
     op = skops->op;
diff --git a/bpf/mb_xdp.c b/bpf/mb_xdp.c
index 07ea6df1..9dc7c5ef 100644
--- a/bpf/mb_xdp.c
+++ b/bpf/mb_xdp.c
@@ -50,6 +50,9 @@ static __always_inline __u16 csum_diff4(__u32 from, __u32 to, __u16 csum)
 
 __section("xdp") int mb_xdp(struct xdp_md *ctx)
 {
+    debugf("xdp entry");
+    return XDP_PASS;
+
     void *data = (void *)(long)ctx->data;
     void *data_end = (void *)(long)ctx->data_end;
     struct ethhdr *eth = (struct ethhdr *)data;