bpftool/Documentation/bpftool-map.rst

1 .. SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 bpftool-map
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19 	*OPTIONS* := { |COMMON_OPTIONS| | { **-f** | **--bpffs** } | { **-n** | **--nomount** } }
57 |		| **queue** | **stack** | **sk_storage** | **struct_ops** | **ringbuf** | **inode_storage**
84 		  To create maps of type array-of-maps or hash-of-maps, the
142 		  Peek next value in the queue or stack.
151 		  Enqueue *VALUE* into the queue.
154 		  Dequeue and print value from the queue.
157 		  Freeze the map as read-only from user space. Entries from a
171 	-f, --bpffs
174 	-n, --nomount
220 | **# mount -t bpf none /sys/fs/bpf/**
226 programs used for tail-call jumps at runtime, without having to reload the
227 entry-point program. Below is an example for this use case: we load a program
236 | **# bpftool prog loadall tail_calls.o /sys/fs/bpf/foo type xdp**
237 | **# bpftool prog --bpffs**
242           loaded_at 2018-12-12T15:02:58+0000  uid 0
244           pinned /sys/fs/bpf/foo/xdp
246           loaded_at 2018-12-12T15:02:58+0000  uid 0
248           pinned /sys/fs/bpf/foo/process
250           loaded_at 2018-12-12T15:02:58+0000  uid 0
252           pinned /sys/fs/bpf/foo/debug
271 | **# bpftool map update pinned /sys/fs/bpf/bar key 0 0 0 0 value pinned /sys/fs/bpf/foo/debug**