/* Copyright (c) 2016 Thomas Graf * * This program is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. */ #include #include #include #include #include "bpf_helpers.h" # define printk(fmt, ...) \ ({ \ char ____fmt[] = fmt; \ bpf_trace_printk(____fmt, sizeof(____fmt), \ ##__VA_ARGS__); \ }) struct bpf_elf_map { __u32 type; __u32 size_key; __u32 size_value; __u32 max_elem; __u32 flags; __u32 id; __u32 pinning; }; struct bpf_elf_map SEC("maps") lwt_len_hist_map = { .type = BPF_MAP_TYPE_PERCPU_HASH, .size_key = sizeof(__u64), .size_value = sizeof(__u64), .pinning = 2, .max_elem = 1024, }; static unsigned int log2(unsigned int v) { unsigned int r; unsigned int shift; r = (v > 0xFFFF) << 4; v >>= r; shift = (v > 0xFF) << 3; v >>= shift; r |= shift; shift = (v > 0xF) << 2; v >>= shift; r |= shift; shift = (v > 0x3) << 1; v >>= shift; r |= shift; r |= (v >> 1); return r; } static unsigned int log2l(unsigned long v) { unsigned int hi = v >> 32; if (hi) return log2(hi) + 32; else return log2(v); } SEC("len_hist") int do_len_hist(struct __sk_buff *skb) { __u64 *value, key, init_val = 1; key = log2l(skb->len); value = bpf_map_lookup_elem(&lwt_len_hist_map, &key); if (value) __sync_fetch_and_add(value, 1); else bpf_map_update_elem(&lwt_len_hist_map, &key, &init_val, BPF_ANY); return BPF_OK; } char _license[] SEC("license") = "GPL"; /tree/tools/lib/bitmap.c?h=nds-private-remove&id=11e3b725cfc282efe9d4a354153e99d86a16af08'>treecommitdiff
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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2017-01-17 13:46:29 +0000
committerHerbert Xu <herbert@gondor.apana.org.au>2017-01-23 22:41:33 +0800
commit11e3b725cfc282efe9d4a354153e99d86a16af08 (patch)
tree8b5b9e0e1bcae1ab98ee652ffb7b13b05c209bd6 /tools/lib/bitmap.c
parentd6040764adcb5cb6de1489422411d701c158bb69 (diff)
crypto: arm64/aes-blk - honour iv_out requirement in CBC and CTR modes
Update the ARMv8 Crypto Extensions and the plain NEON AES implementations in CBC and CTR modes to return the next IV back to the skcipher API client. This is necessary for chaining to work correctly. Note that for CTR, this is only done if the request is a round multiple of the block size, since otherwise, chaining is impossible anyway. Cc: <stable@vger.kernel.org> # v3.16+ Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'tools/lib/bitmap.c')
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