1 files changed, 0 insertions, 102 deletions
diff --git a/usage/bpf.c b/usage/bpf.c
deleted file mode 100644
index 8b2343a..0000000
--- a/usage/bpf.c
+++ /dev/null
@@ -1,102 +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, __u64);   // source mac 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, __u64);   // destination mac 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 __u64 nchar6_to_u64(unsigned char bytes[6])
-{
-	union {
-		char bytes[6];
-		__u64 i;
-	} ret;
-
-	ret.i = 0;
-#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
-	ret.bytes[0] = bytes[5];
-	ret.bytes[1] = bytes[4];
-	ret.bytes[2] = bytes[3];
-	ret.bytes[3] = bytes[2];
-	ret.bytes[4] = bytes[1];
-	ret.bytes[5] = bytes[0];
-#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
-	ret.bytes[0] = bytes[0];
-	ret.bytes[1] = bytes[1];
-	ret.bytes[2] = bytes[2];
-	ret.bytes[3] = bytes[3];
-	ret.bytes[4] = bytes[4];
-	ret.bytes[5] = bytes[5];
-#endif
-
-	return ret.i;
-}
-
-static __always_inline int update_usage(void *map, struct __sk_buff *skb,
-					update_usage_t traffic)
-{
-	__u64 mac, len, *usage;
-
-	void *data_end = (void *)(long)skb->data_end;
-	struct ethhdr *eth = (void *)(long)skb->data;
-
-	if ((void *) (eth + 1) > data_end)
-		return TCX_PASS;
-
-	if (skb->protocol != bpf_htons(ETH_P_IP) &&
-	    skb->protocol != bpf_htons(ETH_P_IPV6)) {
-		return TCX_PASS;
-	}
-
-	len = skb->len - sizeof(struct ethhdr);
-	if (traffic == UPDATE_USAGE_INGRESS) {
-		mac = nchar6_to_u64(eth->h_source);
-	} else {
-		mac = nchar6_to_u64(eth->h_dest);
-	}
-
-	usage = bpf_map_lookup_elem(map, &mac);
-	if (!usage) {
-		/* no entry in the map for this IP address yet. */
-		bpf_map_update_elem(map, &mac, &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);
-}