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Use ASSERT to check result but keep CHECK where format was used to report error. Use bpf_map__set_max_entries() to set map size dynamically from userspace according to page size. Zero-initialize the variable in bpf prog, otherwise it will cause problems on some versions of Clang. Signed-off-by: Yauheni Kaliuta <yauheni.kaliuta@redhat.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20210408061310.95877-4-yauheni.kaliuta@redhat.com
43 lines
1,010 B
C
43 lines
1,010 B
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) 2020 Facebook
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#include <test_progs.h>
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#include <network_helpers.h>
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#include "map_ptr_kern.skel.h"
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void test_map_ptr(void)
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{
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struct map_ptr_kern *skel;
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__u32 duration = 0, retval;
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char buf[128];
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int err;
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int page_size = getpagesize();
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skel = map_ptr_kern__open();
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if (!ASSERT_OK_PTR(skel, "skel_open"))
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return;
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err = bpf_map__set_max_entries(skel->maps.m_ringbuf, page_size);
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if (!ASSERT_OK(err, "bpf_map__set_max_entries"))
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goto cleanup;
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err = map_ptr_kern__load(skel);
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if (!ASSERT_OK(err, "skel_load"))
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goto cleanup;
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skel->bss->page_size = page_size;
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err = bpf_prog_test_run(bpf_program__fd(skel->progs.cg_skb), 1, &pkt_v4,
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sizeof(pkt_v4), buf, NULL, &retval, NULL);
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if (CHECK(err, "test_run", "err=%d errno=%d\n", err, errno))
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goto cleanup;
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if (CHECK(!retval, "retval", "retval=%d map_type=%u line=%u\n", retval,
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skel->bss->g_map_type, skel->bss->g_line))
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goto cleanup;
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cleanup:
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map_ptr_kern__destroy(skel);
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}
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