diff options
Diffstat (limited to 'samples/bpf/tcp_rwnd_kern.c')
| -rw-r--r-- | samples/bpf/tcp_rwnd_kern.c | 19 |
1 files changed, 7 insertions, 12 deletions
diff --git a/samples/bpf/tcp_rwnd_kern.c b/samples/bpf/tcp_rwnd_kern.c index 3f2a228f81ce..223d9c23b10c 100644 --- a/samples/bpf/tcp_rwnd_kern.c +++ b/samples/bpf/tcp_rwnd_kern.c @@ -8,7 +8,7 @@ * and the first 5.5 bytes of the IPv6 addresses are not the same (in this * example that means both hosts are not the same datacenter). * - * Use load_sock_ops to load this BPF program. + * Use "bpftool cgroup attach $cg sock_ops $prog" to load this BPF program. */ #include <uapi/linux/bpf.h> @@ -16,18 +16,11 @@ #include <uapi/linux/if_packet.h> #include <uapi/linux/ip.h> #include <linux/socket.h> -#include "bpf_helpers.h" -#include "bpf_endian.h" +#include <bpf/bpf_helpers.h> +#include <bpf/bpf_endian.h> #define DEBUG 1 -#define bpf_printk(fmt, ...) \ -({ \ - char ____fmt[] = fmt; \ - bpf_trace_printk(____fmt, sizeof(____fmt), \ - ##__VA_ARGS__); \ -}) - SEC("sockops") int bpf_rwnd(struct bpf_sock_ops *skops) { @@ -38,8 +31,10 @@ int bpf_rwnd(struct bpf_sock_ops *skops) * if neither port numberis 55601 */ if (bpf_ntohl(skops->remote_port) != - 55601 && skops->local_port != 55601) - return -1; + 55601 && skops->local_port != 55601) { + skops->reply = -1; + return 1; + } op = (int) skops->op; |