struct xdp_md {

data: u64,

data_end: u64,

data_meta: u64,

ingress_ifindex: u32,

rx_queue_index: u32,

egress_ifindex: u32,

}

enum xdp_action {

XDP_ABORTED = 0,

XDP_DROP = 1,

XDP_PASS = 2,

XDP_REDIRECT = 3,

XDP_TX = 4,

}

struct __sk_buff {

data: u64,

data_end: u64,

len: u32,

ifindex: u32,

protocol: u32,

mark: u32,

}

enum tc_action {

TC_ACT_UNSPEC = 255,

TC_ACT_OK = 0,

TC_ACT_RECLASSIFY = 1,

TC_ACT_SHOT = 2,

TC_ACT_PIPE = 3,

TC_ACT_STOLEN = 4,

TC_ACT_QUEUED = 5,

TC_ACT_REPEAT = 6,

TC_ACT_REDIRECT = 7,

}

pin var shared_counter : hash<u32, u32>(1024)

@xdp fn packet_counter(ctx: *xdp_md) -> xdp_action {

shared_counter[1] = 100

return XDP_PASS

}

@tc fn packet_filter(ctx: *__sk_buff) -> i32 {

shared_counter[2] = 200

return TC_ACT_OK

}

fn main() -> i32 {

shared_counter[1] = 0

shared_counter[2] = 0

var prog1 = load(packet_counter)

var prog2 = load(packet_filter)

attach(prog1, "eth0", 0)

attach(prog2, "eth0", 0)

print("Multiple XDP programs attached to eth0")

print("Counter and filter working together...")

// Detach in reverse order (good practice)

detach(prog2)

detach(prog1)

print("All programs detached")

return 0

}