/* * Minimal BPF assembler * * Instead of libpcap high-level filter expressions, it can be quite * useful to define filters in low-level BPF assembler (that is kept * close to Steven McCanne and Van Jacobson's original BPF paper). * In particular for BPF JIT implementors, JIT security auditors, or * just for defining BPF expressions that contain extensions which are * not supported by compilers. * * How to get into it: * * 1) read Documentation/networking/filter.txt * 2) Run `bpf_asm [-c] ` to translate into binary * blob that is loadable with xt_bpf, cls_bpf et al. Note: -c will * pretty print a C-like construct. * * Copyright 2013 Daniel Borkmann * Licensed under the GNU General Public License, version 2.0 (GPLv2) */ #include #include #include extern void bpf_asm_compile(FILE *fp, bool cstyle); int main(int argc, char **argv) { FILE *fp = stdin; bool cstyle = false; int i; for (i = 1; i < argc; i++) { if (!strncmp("-c", argv[i], 2)) { cstyle = true; continue; } fp = fopen(argv[i], "r"); if (!fp) { fp = stdin; continue; } break; } bpf_asm_compile(fp, cstyle); return 0; } -back net-next plumbingsTobias Klauser
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authorDaniel Vetter <daniel.vetter@ffwll.ch>2017-01-12 17:15:56 +0100
committerDaniel Vetter <daniel.vetter@ffwll.ch>2017-01-30 10:17:32 +0100
commite6e7b48b295afa5a5ab440de0a94d9ad8b3ce2d0 (patch)
tree77cadb6d8aad1b52c34e4afa8c9deef603bbe2ed /net/ax25/TODO
parent4e5b54f127426c82dc2816340c26d951a5bb3429 (diff)
drm: Don't race connector registration
I was under the misconception that the sysfs dev stuff can be fully set up, and then registered all in one step with device_add. That's true for properties and property groups, but not for parents and child devices. Those must be fully registered before you can register a child. Add a bit of tracking to make sure that asynchronous mst connector hotplugging gets this right. For consistency we rely upon the implicit barriers of the connector->mutex, which is taken anyway, to ensure that at least either the connector or device registration call will work out. Mildly tested since I can't reliably reproduce this on my mst box here. Reported-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Acked-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1484237756-2720-1-git-send-email-daniel.vetter@ffwll.ch
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