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| author | Florian Westphal <fw@strlen.de> | 2016-02-16 17:24:08 +0100 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2016-02-29 13:55:59 +0100 |
| commit | b07edbe1cf3dae9ba81f24888e2f2a9dbe778918 (patch) | |
| tree | ed0bb89d4e43f6eea804b4d1cbad01050dae3b30 /lib/random32.c | |
| parent | f12d33f4d83c6837d176e1aef337914089c77957 (diff) | |
| download | linux-stable-b07edbe1cf3dae9ba81f24888e2f2a9dbe778918.tar.gz linux-stable-b07edbe1cf3dae9ba81f24888e2f2a9dbe778918.tar.bz2 linux-stable-b07edbe1cf3dae9ba81f24888e2f2a9dbe778918.zip | |
netfilter: meta: add PRANDOM support
Can be used to randomly match packets e.g. for statistic traffic sampling.
See commit 3ad0040573b0c00f8848
("bpf: split state from prandom_u32() and consolidate {c, e}BPF prngs")
for more info why this doesn't use prandom_u32 directly.
Unlike bpf nft_meta can be built as a module, so add an EXPORT_SYMBOL
for prandom_seed_full_state too.
Cc: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'lib/random32.c')
| -rw-r--r-- | lib/random32.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/random32.c b/lib/random32.c index 12111910ccd0..510d1ce7d4d2 100644 --- a/lib/random32.c +++ b/lib/random32.c @@ -255,6 +255,7 @@ void prandom_seed_full_state(struct rnd_state __percpu *pcpu_state) prandom_warmup(state); } } +EXPORT_SYMBOL(prandom_seed_full_state); /* * Generate better values after random number generator |