mirror of
https://github.com/eunomia-bpf/bpf-developer-tutorial.git
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3a722c03d5
* feat: add tcx and bpf token tutorials * docs: auto-generate documentation * docs: rewrite tcx and bpf_token tutorials with richer content and consistent style Rewrote all 4 README files (EN/ZH for both tutorials) to match the existing tutorial style with detailed background, full code listings, step-by-step explanations, comparison tables, and proper references. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> * style: replace em dashes with colons, commas, and parentheses Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> * docs: auto-generate documentation * ci: add tcx and bpf_token builds to CI; simplify execl in token_userns_demo - Add make targets for src/50-tcx and src/features/bpf_token to the test-libbpf CI workflow. - Replace four separate execl() calls with a single execv() using a dynamically built argv array, reducing complexity and eliminating CodeFactor command-injection false positives. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> * ci: fix mkdocs path in trigger-sync workflow Use .venv/bin/mkdocs instead of bare mkdocs, since make install puts it inside a virtualenv. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> --------- Co-authored-by: LinuxDev9002 <linuxdev8883@example.com> Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com> Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
33 lines
596 B
C
33 lines
596 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <vmlinux.h>
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#include <bpf/bpf_helpers.h>
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char LICENSE[] SEC("license") = "GPL";
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struct token_stats {
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__u64 packets;
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__u32 last_ifindex;
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};
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struct {
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__uint(type, BPF_MAP_TYPE_ARRAY);
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__uint(max_entries, 1);
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__type(key, __u32);
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__type(value, struct token_stats);
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} stats_map SEC(".maps");
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SEC("xdp")
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int handle_packet(struct xdp_md *ctx)
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{
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struct token_stats *stats;
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__u32 key = 0;
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stats = bpf_map_lookup_elem(&stats_map, &key);
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if (!stats)
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return 0;
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stats->packets++;
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stats->last_ifindex = ctx->ingress_ifindex;
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return XDP_PASS;
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}
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