bpftool/Documentation/bpftool-map.rst

2 bpftool-map
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15 	*OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-f** | **--bpffs** } }
53 |		| **queue** | **stack** | **sk_storage** | **struct_ops** | **ringbuf** | **inode_storage** }
79 		  To create maps of type array-of-maps or hash-of-maps, the
137 		  Peek next value in the queue or stack.
146 		  Enqueue *VALUE* into the queue.
149 		  Dequeue and print value from the queue.
152 		  Freeze the map as read-only from user space. Entries from a
166 	-f, --bpffs
169 	-n, --nomount
215 | **# mount -t bpf none /sys/fs/bpf/**
221 programs used for tail-call jumps at runtime, without having to reload the
222 entry-point program. Below is an example for this use case: we load a program
231 | **# bpftool prog loadall tail_calls.o /sys/fs/bpf/foo type xdp**
232 | **# bpftool prog --bpffs**
237           loaded_at 2018-12-12T15:02:58+0000  uid 0
239           pinned /sys/fs/bpf/foo/xdp
241           loaded_at 2018-12-12T15:02:58+0000  uid 0
243           pinned /sys/fs/bpf/foo/process
245           loaded_at 2018-12-12T15:02:58+0000  uid 0
247           pinned /sys/fs/bpf/foo/debug
266 | **# bpftool map update pinned /sys/fs/bpf/bar key 0 0 0 0 value pinned /sys/fs/bpf/foo/debug**