57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2020 Facebook */
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#include "bpf_iter.h"
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#include "bpf_tracing_net.h"
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#include <bpf/bpf_helpers.h>
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char _license[] SEC("license") = "GPL";
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extern bool CONFIG_IPV6_SUBTREES __kconfig __weak;
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SEC("iter/ipv6_route")
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int dump_ipv6_route(struct bpf_iter__ipv6_route *ctx)
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{
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struct seq_file *seq = ctx->meta->seq;
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struct fib6_info *rt = ctx->rt;
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const struct net_device *dev;
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struct fib6_nh *fib6_nh;
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unsigned int flags;
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struct nexthop *nh;
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if (rt == (void *)0)
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return 0;
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fib6_nh = &rt->fib6_nh[0];
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flags = rt->fib6_flags;
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/* FIXME: nexthop_is_multipath is not handled here. */
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nh = rt->nh;
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if (rt->nh)
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fib6_nh = &nh->nh_info->fib6_nh;
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BPF_SEQ_PRINTF(seq, "%pi6 %02x ", &rt->fib6_dst.addr, rt->fib6_dst.plen);
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if (CONFIG_IPV6_SUBTREES)
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BPF_SEQ_PRINTF(seq, "%pi6 %02x ", &rt->fib6_src.addr,
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rt->fib6_src.plen);
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else
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BPF_SEQ_PRINTF(seq, "00000000000000000000000000000000 00 ");
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if (fib6_nh->fib_nh_gw_family) {
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flags |= RTF_GATEWAY;
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BPF_SEQ_PRINTF(seq, "%pi6 ", &fib6_nh->fib_nh_gw6);
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} else {
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BPF_SEQ_PRINTF(seq, "00000000000000000000000000000000 ");
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}
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dev = fib6_nh->fib_nh_dev;
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if (dev)
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BPF_SEQ_PRINTF(seq, "%08x %08x %08x %08x %8s\n", rt->fib6_metric,
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rt->fib6_ref.refs.counter, 0, flags, dev->name);
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else
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BPF_SEQ_PRINTF(seq, "%08x %08x %08x %08x\n", rt->fib6_metric,
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rt->fib6_ref.refs.counter, 0, flags);
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return 0;
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}
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