netdev - Re: [PATCH bpf 11/11] bpf: add selftest for tcpbpf

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Date:   Tue, 19 Dec 2017 17:34:18 -0800
From:   Alexei Starovoitov <ast@...com>
To:     Lawrence Brakmo <brakmo@...com>, netdev <netdev@...r.kernel.org>
CC:     Kernel Team <kernel-team@...com>, Blake Matheny <bmatheny@...com>,
        Daniel Borkmann <daniel@...earbox.net>
Subject: Re: [PATCH bpf 11/11] bpf: add selftest for tcpbpf

On 12/18/17 10:22 PM, Lawrence Brakmo wrote:
> -	sockmap_verdict_prog.o dev_cgroup.o sample_ret0.o test_tracepoint.o
> +	sockmap_verdict_prog.o dev_cgroup.o sample_ret0.o test_tracepoint.o \
> +	test_tcpbpf_kern.o

it won't apply. please base patches on bpf-next tree

> +#!/usr/local/bin/python
> +#
> +# Copyright (c) 2017 Facebook
> +#
> +# This program is free software; you can redistribute it and/or
> +# modify it under the terms of version 2 of the GNU General Public
> +# License as published by the Free Software Foundation.

the license should be in SPDX format.

> +++ b/tools/testing/selftests/bpf/test_tcpbpf_kern.c
> @@ -0,0 +1,133 @@
> +/* Copyright (c) 2017 Facebook
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of version 2 of the GNU General Public
> + * License as published by the Free Software Foundation.
> + */

same here.

> +		case BPF_SOCK_OPS_STATE_CB:
> +			if (skops->args[1] == 7) {
> +				__u32 key = 0;
> +				struct globals g, *gp;
> +
> +				gp = bpf_map_lookup_elem(&global_map, &key);
> +				if (gp == NULL) {
> +				} else {
> +					g = *gp;
> +					g.total_retrans = skops->total_retrans;
> +					g.data_segs_in = skops->data_segs_in;

you can reduce indent by doing
if (!gp)
   break;
g = *gp;
g.total_retrans = skops->total_retrans;

> +++ b/tools/testing/selftests/bpf/test_tcpbpf_user.c
> @@ -0,0 +1,119 @@
> +/* Copyright (c) 2017 Facebook
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of version 2 of the GNU General Public
> + * License as published by the Free Software Foundation.
> + */
> +#include <stdio.h>
> +#include <stdlib.h>
> +#include <stdio.h>
> +#include <unistd.h>
> +#include <errno.h>
> +#include <signal.h>
> +#include <string.h>
> +#include <assert.h>
> +#include <linux/perf_event.h>
> +#include <linux/ptrace.h>
> +#include <linux/bpf.h>
> +#include <sys/ioctl.h>
> +#include <sys/types.h>
> +#include <sys/stat.h>
> +#include <fcntl.h>
> +#include <bpf/bpf.h>
> +#include <bpf/libbpf.h>
> +//#include "bpf_load.h"

please remove left over comments.