Function report |
Source Code:kernel\bpf\lpm_trie.c |
Create Date:2022-07-28 13:13:29 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:trie_alloc
Proto:static struct bpf_map *trie_alloc(union bpf_attr *attr)
Type:struct bpf_map
Parameter:
Type | Parameter | Name |
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union bpf_attr * | attr |
546 | If Not Check operation authority Then Return ERR_PTR( - EPERM) |
560 | trie = kzalloc - allocate memory. The memory is set to zero.*@size: how many bytes of memory are required.*@flags: the type of memory to allocate (see kmalloc). |
565 | bpf_map_init_from_attr( & map, attr) |
566 | data_size = size of key in bytes - offsetof(structbpf_lpm_trie_key, data) |
568 | max_prefixlen = data_size * 8 |
570 | cost_per_node = sizeof(structlpm_trie_node) + size of value in bytes + data_size |
574 | ret = bpf_map_charge_init( & memory, cost) |
578 | raw_spin_lock_init( & lock) |
580 | Return map |
581 | out_err : |
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