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| author | Daniel Borkmann <daniel@iogearbox.net> | 2015-03-14 02:27:16 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-03-15 21:57:25 -0400 |
| commit | 03e69b508b6f7c51743055c9f61d1dfeadf4b635 (patch) | |
| tree | 4c9199cde0fe876871e20352666d40721d4c1d5f /kernel/sys.c | |
| parent | 12028820423bd7705beb5e09889faab95c545ea1 (diff) | |
| download | blackbird-op-linux-03e69b508b6f7c51743055c9f61d1dfeadf4b635.tar.gz blackbird-op-linux-03e69b508b6f7c51743055c9f61d1dfeadf4b635.zip | |
ebpf: add prandom helper for packet sampling
This work is similar to commit 4cd3675ebf74 ("filter: added BPF
random opcode") and adds a possibility for packet sampling in eBPF.
Currently, this is only possible in classic BPF and useful to
combine sampling with f.e. packet sockets, possible also with tc.
Example function proto-type looks like:
u32 (*prandom_u32)(void) = (void *)BPF_FUNC_get_prandom_u32;
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/sys.c')
0 files changed, 0 insertions, 0 deletions
