| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1395749457-16178-1-git-send-email-dborkman@redhat.com> Date: Tue, 25 Mar 2014 13:10:48 +0100 From: Daniel Borkmann <dborkman@...hat.com> To: davem@...emloft.net Cc: ast@...mgrid.com, netdev@...r.kernel.org Subject: [PATCH net-next v2 0/9] BPF updates We sat down and have heavily reworked the whole previous patchset from v10 [1] to address all comments/concerns. This patchset therefore *replaces* the internal BPF interpreter with the new layout as discussed in [1], and migrates some exotic callers to properly use the BPF API for a transparent upgrade. All other callers that already use the BPF API in a way it should be used, need no further changes to run the new internals. We also removed the sysctl knob entirely, and do not expose any structure to userland, so that implementation details only reside in kernel space. Since we are replacing the interpreter we had to migrate seccomp in one patch along with the interpreter to not break anything. When attaching a new filter, the flow can be described as following: i) test if jit compiler is enabled and can compile the user BPF, ii) if so, then go for it, iii) if not, then transparently migrate the filter into the new representation, and run it in the interpreter. Also, we have scratched the jit flag from the len attribute and made it as initial patch in this series as Pablo has suggested in the last feedback, thanks. For details, please refer to the patches themselves. We did extensive testing of BPF and seccomp on the new interpreter itself and also on the user ABIs and could not find any issues; new performance numbers as posted in patch 8 are also still the same. Please find more details in the patches themselves. For all the previous history from v1 to v10, see [1]. We have decided to drop the v11 as we have pedantically reworked the set, but of course, included all previous feedback. v1 -> v2: - Rebased to latest net-next - Added static to ptp_filter as suggested by Dave - Fixed a typo in patch 8's commit message - Rest unchanged Thanks ! [1] http://thread.gmane.org/gmane.linux.kernel/1665858 Alexei Starovoitov (2): net: filter: rework/optimize internal BPF interpreter's instruction set doc: filter: extend BPF documentation to document new internals Daniel Borkmann (7): net: filter: add jited flag to indicate jit compiled filters net: filter: keep original BPF program around net: filter: move filter accounting to filter core net: ptp: use sk_unattached_filter_create() for BPF net: ptp: do not reimplement PTP/BPF classifier net: ppp: use sk_unattached_filter api net: isdn: use sk_unattached_filter api Documentation/networking/filter.txt | 147 ++ arch/arm/net/bpf_jit_32.c | 3 +- arch/powerpc/net/bpf_jit_comp.c | 3 +- arch/s390/net/bpf_jit_comp.c | 5 +- arch/sparc/net/bpf_jit_comp.c | 3 +- arch/x86/net/bpf_jit_comp.c | 3 +- drivers/isdn/i4l/isdn_ppp.c | 61 +- .../net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c | 11 +- drivers/net/ethernet/ti/cpts.c | 10 +- drivers/net/ethernet/xscale/ixp4xx_eth.c | 11 +- drivers/net/ppp/ppp_generic.c | 60 +- include/linux/filter.h | 110 +- include/linux/isdn_ppp.h | 5 +- include/linux/ptp_classify.h | 14 +- include/linux/seccomp.h | 1 - include/net/sock.h | 27 - kernel/seccomp.c | 119 +- net/core/filter.c | 1523 ++++++++++++++++---- net/core/sock_diag.c | 23 +- net/core/timestamping.c | 27 +- 20 files changed, 1630 insertions(+), 536 deletions(-) -- 1.7.11.7 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists