Merge tag 'trace-v4.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...

[karo-tx-linux.git] / samples / bpf / tcbpf1_kern.c

diff --git a/samples/bpf/tcbpf1_kern.c b/samples/bpf/tcbpf1_kern.c
index 7cf3f42a6e399bcf53be2dae6fa8587d3bc67778..7c27710f82968e640ff02c54fb29d2cbb56cb356 100644 (file)
--- a/samples/bpf/tcbpf1_kern.c
+++ b/samples/bpf/tcbpf1_kern.c
@@ -4,6 +4,8 @@
 #include <uapi/linux/ip.h>
 #include <uapi/linux/in.h>
 #include <uapi/linux/tcp.h>
+#include <uapi/linux/filter.h>
+
 #include "bpf_helpers.h"
 
 /* compiler workaround */
@@ -14,18 +16,12 @@ static inline void set_dst_mac(struct __sk_buff *skb, char *mac)
        bpf_skb_store_bytes(skb, 0, mac, ETH_ALEN, 1);
 }
 
-/* use 1 below for ingress qdisc and 0 for egress */
-#if 0
-#undef ETH_HLEN
-#define ETH_HLEN 0
-#endif
-
 #define IP_CSUM_OFF (ETH_HLEN + offsetof(struct iphdr, check))
 #define TOS_OFF (ETH_HLEN + offsetof(struct iphdr, tos))
 
 static inline void set_ip_tos(struct __sk_buff *skb, __u8 new_tos)
 {
-       __u8 old_tos = load_byte(skb, TOS_OFF);
+       __u8 old_tos = load_byte(skb, BPF_LL_OFF + TOS_OFF);
 
        bpf_l3_csum_replace(skb, IP_CSUM_OFF, htons(old_tos), htons(new_tos), 2);
        bpf_skb_store_bytes(skb, TOS_OFF, &new_tos, sizeof(new_tos), 0);
@@ -38,7 +34,7 @@ static inline void set_ip_tos(struct __sk_buff *skb, __u8 new_tos)
 
 static inline void set_tcp_ip_src(struct __sk_buff *skb, __u32 new_ip)
 {
-       __u32 old_ip = _htonl(load_word(skb, IP_SRC_OFF));
+       __u32 old_ip = _htonl(load_word(skb, BPF_LL_OFF + IP_SRC_OFF));
 
        bpf_l4_csum_replace(skb, TCP_CSUM_OFF, old_ip, new_ip, IS_PSEUDO | sizeof(new_ip));
        bpf_l3_csum_replace(skb, IP_CSUM_OFF, old_ip, new_ip, sizeof(new_ip));
@@ -48,7 +44,7 @@ static inline void set_tcp_ip_src(struct __sk_buff *skb, __u32 new_ip)
 #define TCP_DPORT_OFF (ETH_HLEN + sizeof(struct iphdr) + offsetof(struct tcphdr, dest))
 static inline void set_tcp_dest_port(struct __sk_buff *skb, __u16 new_port)
 {
-       __u16 old_port = htons(load_half(skb, TCP_DPORT_OFF));
+       __u16 old_port = htons(load_half(skb, BPF_LL_OFF + TCP_DPORT_OFF));
 
        bpf_l4_csum_replace(skb, TCP_CSUM_OFF, old_port, new_port, sizeof(new_port));
        bpf_skb_store_bytes(skb, TCP_DPORT_OFF, &new_port, sizeof(new_port), 0);
@@ -57,7 +53,7 @@ static inline void set_tcp_dest_port(struct __sk_buff *skb, __u16 new_port)
 SEC("classifier")
 int bpf_prog1(struct __sk_buff *skb)
 {
-       __u8 proto = load_byte(skb, ETH_HLEN + offsetof(struct iphdr, protocol));
+       __u8 proto = load_byte(skb, BPF_LL_OFF + ETH_HLEN + offsetof(struct iphdr, protocol));
        long *value;
 
        if (proto == IPPROTO_TCP) {