5 files changed, 0 insertions, 297 deletions
diff --git a/cmd/bpf/bpf_bpfel.go b/cmd/bpf/bpf_bpfel.go
deleted file mode 100644
index 1efd705..0000000
--- a/cmd/bpf/bpf_bpfel.go
+++ /dev/null
@@ -1,125 +0,0 @@
-// Code generated by bpf2go; DO NOT EDIT.
-//go:build 386 || amd64 || arm || arm64 || loong64 || mips64le || mipsle || ppc64le || riscv64
-
-package main
-
-import (
-	"bytes"
-	_ "embed"
-	"fmt"
-	"io"
-
-	"github.com/cilium/ebpf"
-)
-
-// loadBpf returns the embedded CollectionSpec for bpf.
-func loadBpf() (*ebpf.CollectionSpec, error) {
-	reader := bytes.NewReader(_BpfBytes)
-	spec, err := ebpf.LoadCollectionSpecFromReader(reader)
-	if err != nil {
-		return nil, fmt.Errorf("can't load bpf: %w", err)
-	}
-
-	return spec, err
-}
-
-// loadBpfObjects loads bpf and converts it into a struct.
-//
-// The following types are suitable as obj argument:
-//
-//	*bpfObjects
-//	*bpfPrograms
-//	*bpfMaps
-//
-// See ebpf.CollectionSpec.LoadAndAssign documentation for details.
-func loadBpfObjects(obj interface{}, opts *ebpf.CollectionOptions) error {
-	spec, err := loadBpf()
-	if err != nil {
-		return err
-	}
-
-	return spec.LoadAndAssign(obj, opts)
-}
-
-// bpfSpecs contains maps and programs before they are loaded into the kernel.
-//
-// It can be passed ebpf.CollectionSpec.Assign.
-type bpfSpecs struct {
-	bpfProgramSpecs
-	bpfMapSpecs
-}
-
-// bpfSpecs contains programs before they are loaded into the kernel.
-//
-// It can be passed ebpf.CollectionSpec.Assign.
-type bpfProgramSpecs struct {
-	EgressFunc  *ebpf.ProgramSpec `ebpf:"egress__func"`
-	IngressFunc *ebpf.ProgramSpec `ebpf:"ingress_func"`
-}
-
-// bpfMapSpecs contains maps before they are loaded into the kernel.
-//
-// It can be passed ebpf.CollectionSpec.Assign.
-type bpfMapSpecs struct {
-	EgressIp4UsageMap  *ebpf.MapSpec `ebpf:"egress_ip4_usage_map"`
-	IngressIp4UsageMap *ebpf.MapSpec `ebpf:"ingress_ip4_usage_map"`
-}
-
-// bpfObjects contains all objects after they have been loaded into the kernel.
-//
-// It can be passed to loadBpfObjects or ebpf.CollectionSpec.LoadAndAssign.
-type bpfObjects struct {
-	bpfPrograms
-	bpfMaps
-}
-
-func (o *bpfObjects) Close() error {
-	return _BpfClose(
-		&o.bpfPrograms,
-		&o.bpfMaps,
-	)
-}
-
-// bpfMaps contains all maps after they have been loaded into the kernel.
-//
-// It can be passed to loadBpfObjects or ebpf.CollectionSpec.LoadAndAssign.
-type bpfMaps struct {
-	EgressIp4UsageMap  *ebpf.Map `ebpf:"egress_ip4_usage_map"`
-	IngressIp4UsageMap *ebpf.Map `ebpf:"ingress_ip4_usage_map"`
-}
-
-func (m *bpfMaps) Close() error {
-	return _BpfClose(
-		m.EgressIp4UsageMap,
-		m.IngressIp4UsageMap,
-	)
-}
-
-// bpfPrograms contains all programs after they have been loaded into the kernel.
-//
-// It can be passed to loadBpfObjects or ebpf.CollectionSpec.LoadAndAssign.
-type bpfPrograms struct {
-	EgressFunc  *ebpf.Program `ebpf:"egress__func"`
-	IngressFunc *ebpf.Program `ebpf:"ingress_func"`
-}
-
-func (p *bpfPrograms) Close() error {
-	return _BpfClose(
-		p.EgressFunc,
-		p.IngressFunc,
-	)
-}
-
-func _BpfClose(closers ...io.Closer) error {
-	for _, closer := range closers {
-		if err := closer.Close(); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-// Do not access this directly.
-//
-//go:embed bpf_bpfel.o
-var _BpfBytes []byte
diff --git a/cmd/bpf/bpf_bpfel.o b/cmd/bpf/bpf_bpfel.o
deleted file mode 100644
index 789c00f..0000000
--- a/cmd/bpf/bpf_bpfel.o
+++ /dev/null
diff --git a/cmd/bpf/bpf_usage.c b/cmd/bpf/bpf_usage.c
deleted file mode 100644
index 5e505da..0000000
--- a/cmd/bpf/bpf_usage.c
+++ /dev/null
@@ -1,73 +0,0 @@
-#include <linux/bpf.h>
-#include <linux/if_ether.h>
-#include <linux/ip.h>
-
-#include <bpf/bpf_endian.h>
-#include <bpf/bpf_helpers.h>
-
-#define MAX_MAP_ENTRIES 4096
-
-char __license[] SEC("license") = "GPL";
-
-struct {
-	__uint(type, BPF_MAP_TYPE_LRU_HASH);
-	__uint(max_entries, MAX_MAP_ENTRIES);
-	__type(key, __u32);   // source IPv4 address
-	__type(value, __u64); // no of bytes
-} ingress_ip4_usage_map SEC(".maps");
-
-struct {
-	__uint(type, BPF_MAP_TYPE_LRU_HASH);
-	__uint(max_entries, MAX_MAP_ENTRIES);
-	__type(key, __u32);   // destination IPv4 address
-	__type(value, __u64); // no of bytes
-} egress_ip4_usage_map SEC(".maps");
-
-typedef enum {
-	UPDATE_USAGE_INGRESS,
-	UPDATE_USAGE_EGRESS,
-} update_usage_t;
-
-static __always_inline int update_usage(void *map, struct __sk_buff *skb,
-					update_usage_t traffic)
-{
-	__u32 ip4;
-	__u64 len, *usage;
-
-	void *data_end = (void *)(long)skb->data_end;
-	void *data = (void *)(long)skb->data;
-	struct iphdr *ip = data + sizeof(struct ethhdr);
-
-	if (skb->protocol != bpf_htons(ETH_P_IP))
-		return TCX_PASS;
-	else if ((void *)(ip + 1) > data_end)
-		return TCX_PASS;
-
-	if (traffic == UPDATE_USAGE_INGRESS)
-		ip4 = ip->saddr;
-	else
-		ip4 = ip->daddr;
-	len = skb->len - sizeof(struct ethhdr);
-
-	usage = bpf_map_lookup_elem(map, &ip4);
-	if (!usage) {
-		/* no entry in the map for this IP address yet. */
-		bpf_map_update_elem(map, &ip4, &len, BPF_ANY);
-	} else {
-		__sync_fetch_and_add(usage, len);
-	}
-
-	return TCX_PASS;
-}
-
-SEC("tc")
-int ingress_func(struct __sk_buff *skb)
-{
-	return update_usage(&ingress_ip4_usage_map, skb, UPDATE_USAGE_INGRESS);
-}
-
-SEC("tc")
-int egress__func(struct __sk_buff *skb)
-{
-	return update_usage(&egress_ip4_usage_map, skb, UPDATE_USAGE_EGRESS);
-}
diff --git a/cmd/bpf/gen.go b/cmd/bpf/gen.go
deleted file mode 100644
index c90c0a7..0000000
--- a/cmd/bpf/gen.go
+++ /dev/null
@@ -1,3 +0,0 @@
-package main
-
-//go:generate go run github.com/cilium/ebpf/cmd/bpf2go -target bpfel bpf bpf_usage.c
diff --git a/cmd/bpf/main.go b/cmd/bpf/main.go
deleted file mode 100644
index 5a5f842..0000000
--- a/cmd/bpf/main.go
+++ /dev/null
@@ -1,96 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"log"
-	"net"
-	"net/netip"
-	"os"
-	"time"
-
-	"github.com/cilium/ebpf"
-	"github.com/cilium/ebpf/link"
-)
-
-type Usage struct {
-	ingress uint64
-	egress uint64
-}
-
-func main() {
-	if len(os.Args) < 2 {
-		log.Fatalf("Please specify a network interface")
-	}
-
-	ifaceName := os.Args[1]
-	iface, err := net.InterfaceByName(ifaceName)
-	if err != nil {
-		log.Fatalf("lookup network iface %q: %s", ifaceName, err)
-	}
-
-	// Load pre-compiled programs into the kernel.
-	objs := bpfObjects{}
-	if err := loadBpfObjects(&objs, nil); err != nil {
-		log.Fatalf("loading objects: %s", err)
-	}
-	defer objs.Close()
-
-	// Attach the program.
-	ingressLink, err := link.AttachTCX(link.TCXOptions{
-		Interface: iface.Index,
-		Program:   objs.IngressFunc,
-		Attach:    ebpf.AttachTCXIngress,
-	})
-	if err != nil {
-		log.Fatalf("could not attach TCx program: %s", err)
-	}
-	defer ingressLink.Close()
-
-	// Attach the program to Egress TC.
-	egressLink, err := link.AttachTCX(link.TCXOptions{
-		Interface: iface.Index,
-		Program:   objs.EgressFunc,
-		Attach:    ebpf.AttachTCXEgress,
-	})
-	if err != nil {
-		log.Fatalf("could not attach TCx program: %s", err)
-	}
-	defer egressLink.Close()
-
-	ticker := time.NewTicker(1 * time.Second)
-	defer ticker.Stop()
-	for range ticker.C {
-		prettyPrint(objs.IngressIp4UsageMap, objs.EgressIp4UsageMap)
-	}
-}
-
-func prettyPrint(ingress *ebpf.Map, egress *ebpf.Map) {
-	ipUsage := make(map[netip.Addr]Usage)
-	var key netip.Addr
-	var value uint64
-
-	iter := ingress.Iterate()
-	for iter.Next(&key, &value) {
-		ipUsage[key] = Usage {
-			ingress: value,
-		}
-	}
-
-	iter = egress.Iterate()
-	for iter.Next(&key, &value) {
-		usage, ok := ipUsage[key]
-		if (ok) {
-			usage.egress = value
-		} else {
-			usage = Usage { egress: value }
-		}
-
-		ipUsage[key] = usage
-	}
-
-	fmt.Print("\033[H\033[2J")
-	fmt.Printf("%15s\t%16s\t%16s\n", "ip", "down", "up")
-	for ip4, usage := range ipUsage {
-		fmt.Printf("%15s\t%16d\t%16d\n", ip4, usage.ingress, usage.egress)
-	}
-}