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bpf_map_get_next_key

kbpf_basic::map

Function bpf_map_get_next_key 

Source 
pub fn bpf_map_get_next_key<F: KernelAuxiliaryOps>(
    arg: BpfMapGetNextKeyArg,
) -> BpfResult<()>
Expand description

Look up an element by key in a specified map and return the key of the next element.

  • If key is None, the operation returns zero and sets the next_key pointer to the key of the first element.
  • If key is Some(T), the operation returns zero and sets the next_key pointer to the key of the next element.
  • If key is the last element, returns -1 and errno is set to ENOENT.

See https://ebpf-docs.dylanreimerink.nl/linux/syscall/BPF_MAP_GET_NEXT_KEY/