92 lines
2.2 KiB
C
92 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <test_progs.h>
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#include <network_helpers.h>
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void test_skb_ctx(void)
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{
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struct __sk_buff skb = {
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.cb[0] = 1,
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.cb[1] = 2,
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.cb[2] = 3,
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.cb[3] = 4,
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.cb[4] = 5,
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.priority = 6,
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.ingress_ifindex = 11,
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.ifindex = 1,
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.tstamp = 7,
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.wire_len = 100,
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.gso_segs = 8,
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.mark = 9,
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.gso_size = 10,
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.hwtstamp = 11,
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};
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LIBBPF_OPTS(bpf_test_run_opts, tattr,
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.data_in = &pkt_v4,
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.data_size_in = sizeof(pkt_v4),
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.ctx_in = &skb,
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.ctx_size_in = sizeof(skb),
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.ctx_out = &skb,
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.ctx_size_out = sizeof(skb),
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);
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struct bpf_object *obj;
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int err, prog_fd, i;
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err = bpf_prog_test_load("./test_skb_ctx.bpf.o", BPF_PROG_TYPE_SCHED_CLS,
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&obj, &prog_fd);
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if (!ASSERT_OK(err, "load"))
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return;
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/* ctx_in != NULL, ctx_size_in == 0 */
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tattr.ctx_size_in = 0;
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err = bpf_prog_test_run_opts(prog_fd, &tattr);
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ASSERT_NEQ(err, 0, "ctx_size_in");
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tattr.ctx_size_in = sizeof(skb);
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/* ctx_out != NULL, ctx_size_out == 0 */
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tattr.ctx_size_out = 0;
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err = bpf_prog_test_run_opts(prog_fd, &tattr);
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ASSERT_NEQ(err, 0, "ctx_size_out");
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tattr.ctx_size_out = sizeof(skb);
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/* non-zero [len, tc_index] fields should be rejected*/
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skb.len = 1;
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err = bpf_prog_test_run_opts(prog_fd, &tattr);
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ASSERT_NEQ(err, 0, "len");
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skb.len = 0;
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skb.tc_index = 1;
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err = bpf_prog_test_run_opts(prog_fd, &tattr);
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ASSERT_NEQ(err, 0, "tc_index");
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skb.tc_index = 0;
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/* non-zero [hash, sk] fields should be rejected */
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skb.hash = 1;
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err = bpf_prog_test_run_opts(prog_fd, &tattr);
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ASSERT_NEQ(err, 0, "hash");
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skb.hash = 0;
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skb.sk = (struct bpf_sock *)1;
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err = bpf_prog_test_run_opts(prog_fd, &tattr);
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ASSERT_NEQ(err, 0, "sk");
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skb.sk = 0;
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err = bpf_prog_test_run_opts(prog_fd, &tattr);
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ASSERT_OK(err, "test_run");
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ASSERT_OK(tattr.retval, "test_run retval");
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ASSERT_EQ(tattr.ctx_size_out, sizeof(skb), "ctx_size_out");
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for (i = 0; i < 5; i++)
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ASSERT_EQ(skb.cb[i], i + 2, "ctx_out_cb");
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ASSERT_EQ(skb.priority, 7, "ctx_out_priority");
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ASSERT_EQ(skb.ifindex, 1, "ctx_out_ifindex");
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ASSERT_EQ(skb.ingress_ifindex, 11, "ctx_out_ingress_ifindex");
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ASSERT_EQ(skb.tstamp, 8, "ctx_out_tstamp");
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ASSERT_EQ(skb.mark, 10, "ctx_out_mark");
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bpf_object__close(obj);
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}
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