- 22 Oct, 2017 19 commits
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Elena Reshetova authored
atomic_t variables are currently used to implement reference counters with the following properties: - counter is initialized to 1 using atomic_set() - a resource is freed upon counter reaching zero - once counter reaches zero, its further increments aren't allowed - counter schema uses basic atomic operations (set, inc, inc_not_zero, dec_and_test, etc.) Such atomic variables should be converted to a newly provided refcount_t type and API that prevents accidental counter overflows and underflows. This is important since overflows and underflows can lead to use-after-free situation and be exploitable. The variable mlx4_cq.refcount is used as pure reference counter. Convert it to refcount_t and fix up the operations. Suggested-by:
Kees Cook <keescook@chromium.org> Reviewed-by:
David Windsor <dwindsor@gmail.com> Reviewed-by:
Hans Liljestrand <ishkamiel@gmail.com> Signed-off-by:
Elena Reshetova <elena.reshetova@intel.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Elena Reshetova authored
atomic_t variables are currently used to implement reference counters with the following properties: - counter is initialized to 1 using atomic_set() - a resource is freed upon counter reaching zero - once counter reaches zero, its further increments aren't allowed - counter schema uses basic atomic operations (set, inc, inc_not_zero, dec_and_test, etc.) Such atomic variables should be converted to a newly provided refcount_t type and API that prevents accidental counter overflows and underflows. This is important since overflows and underflows can lead to use-after-free situation and be exploitable. The variable mtk_eth.dma_refcnt is used as pure reference counter. Convert it to refcount_t and fix up the operations. Suggested-by:
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Elena Reshetova authored
atomic_t variables are currently used to implement reference counters with the following properties: - counter is initialized to 1 using atomic_set() - a resource is freed upon counter reaching zero - once counter reaches zero, its further increments aren't allowed - counter schema uses basic atomic operations (set, inc, inc_not_zero, dec_and_test, etc.) Such atomic variables should be converted to a newly provided refcount_t type and API that prevents accidental counter overflows and underflows. This is important since overflows and underflows can lead to use-after-free situation and be exploitable. The variable clip_entry.refcnt is used as pure reference counter. Convert it to refcount_t and fix up the operations. Suggested-by:
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David S. Miller authored
Yunsheng Lin says: ==================== Add mac loopback selftest support in hns3 driver This patchset refactors the skb receiving and transmitting function before adding mac loopback selftest support in hns3 driver. ==================== Signed-off-by: -
Yunsheng Lin authored
This patch adds mac loopback selftest support for ethtool cmd by checking if a transmitted packet can be received correctly when mac loopback is enabled. Signed-off-by:
Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by:
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Yunsheng Lin authored
This patch refactors the skb receiving and transmitting functions and export them in order to support the ethtool's mac loopback selftest. Signed-off-by:
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David S. Miller authored
Jakub Kicinski says: ==================== tools: bpftool: add a "version" command, and fix several items Quentin says: The first seven patches of this series bring several minor fixes to bpftool. Please see individual commit logs for details. Last patch adds a "version" commands to bpftool, which is in fact the version of the kernel from which it was compiled. ==================== Signed-off-by: -
Quentin Monnet authored
This command can be used to print the version of the tool, which is in fact the version from Linux taken from usr/include/linux/version.h. Example usage: $ bpftool version bpftool v4.14.0 Signed-off-by:Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by:
Jakub Kicinski <jakub.kicinski@netronome.com> Acked-by:
Daniel Borkmann <daniel@iogearbox.net> Signed-off-by:
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Quentin Monnet authored
For the `bpftool prog dump { jited | xlated } ...` command, adding `opcodes` keyword (to request opcodes to be printed) will have no effect if `file FILE` (to write binary output to FILE) is provided. The manual page and the help message to be displayed in the terminal should reflect that, and indicate that these options should be mutually exclusive. Signed-off-by: -
Quentin Monnet authored
The eBPF instruction permitting to load double words (8 bytes) into a register need 8-byte long "immediate" field, and thus occupy twice the space of other instructions. bpftool was aware of this and would increment the instruction counter only once on meeting such instruction, but it would only print the first four bytes of the immediate value to load. Make it able to dump the whole 16 byte-long double instruction instead (as would `llvm-objdump -d <program>`). Signed-off-by:
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Quentin Monnet authored
Make error messages more consistent. Specifically, when bpftool fails at parsing map key bytes, make it print a single error message to stderr and return from the function, instead of (always) printing a second error message afterwards. Signed-off-by:
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Quentin Monnet authored
Make error messages and return codes more consistent. Specifically, make `bpftool prog help` a real command, instead of printing usage by default for a non-recognized "help" command. Output is the same, but this makes bpftool return with a success value instead of an error. Signed-off-by:
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Quentin Monnet authored
Make error messages and return codes more consistent. Specifically, replace the use of info() macro with err() when too many eBPF instructions are received to be dumped, given that bpftool returns with a non-null exit value in that case. Signed-off-by:
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Quentin Monnet authored
Change the program to have a more consistent return code. Specifically, do not make bpftool return an error code simply because it reaches the end of the list of the eBPF programs to show. Signed-off-by:
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Quentin Monnet authored
Make print_hex() able to print to any file instead of standard output only, and rename it to fprint_hex(). The function can now be called with the info() macro, for example, without splitting the output between standard and error outputs. Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Signed-off-by:
Gustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Notice that in this particular case I placed a "fall through" comment on its own line, which is what GCC is expecting to find. Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Signed-off-by:
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- 21 Oct, 2017 21 commits
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Steve Lin authored
Moving generic devlink code (registration) out of VF-R code into new bnxt_devlink file, in preparation for future work to add additional devlink functionality to bnxt. Signed-off-by:
Steve Lin <steven.lin1@broadcom.com> Acked-by:
Andy Gospodarek <gospo@broadcom.com> Signed-off-by:
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Jon Maloy authored
In commit ae236fb2 ("tipc: receive group membership events via member socket") we broke the tipc_poll() function by checking the state of the receive queue before the call to poll_sock_wait(), while relying that state afterwards, when it might have changed. We restore this in this commit. Signed-off-by:
Jon Maloy <jon.maloy@ericsson.com> Signed-off-by:
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David S. Miller authored
Jiri Pirko says: ==================== net: sched: convert cls ndo_setup_tc offload calls to per-block callbacks This patchset is a bit bigger, but most of the patches are doing the same changes in multiple classifiers and drivers. I could do some squashes, but I think it is better split. This is another dependency on the way to shared block implementation. The goal is to remove use of tp->q in classifiers code. Also, this provides drivers possibility to track binding of blocks to qdiscs. Legacy drivers which do not support shared block offloading. register one callback per binding. That maintains the current functionality we have with ndo_setup_tc. Drivers which support block sharing offload register one callback per block which safes overhead. Patches 1-4 introduce the binding notifications and per-block callbacks Patches 5-8 add block callbacks calls to classifiers Patches 9-17 do convert from ndo_setup_tc calls to block callbacks for classifier offloads in drivers Patches 18-20 do cleanup v1->v2: - patch1: - move new enum value to the end ==================== Signed-off-by: -
Jiri Pirko authored
These helpers are no longer in use by drivers, so remove them. Signed-off-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
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Jiri Pirko authored
It is no longer used by the drivers, so remove it. Signed-off-by:
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Jiri Pirko authored
All drivers are converted to use block callbacks for TC_SETUP_CLS*. So it is now safe to remove the calls to ndo_setup_tc from cls_* Signed-off-by:
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Jiri Pirko authored
Benefit from the newly introduced block callback infrastructure and convert ndo_setup_tc calls for matchall offloads to block callbacks. Signed-off-by:
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Jiri Pirko authored
Benefit from the newly introduced block callback infrastructure and convert ndo_setup_tc calls for bpf offloads to block callbacks. Signed-off-by:
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Jiri Pirko authored
Benefit from the newly introduced block callback infrastructure and convert ndo_setup_tc calls for flower offloads to block callbacks. Signed-off-by:
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Jiri Pirko authored
Benefit from the newly introduced block callback infrastructure and convert ndo_setup_tc calls for flower offloads to block callbacks. Signed-off-by:
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Jiri Pirko authored
Benefit from the newly introduced block callback infrastructure and convert ndo_setup_tc calls for u32 offloads to block callbacks. Signed-off-by:
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Jiri Pirko authored
Benefit from the newly introduced block callback infrastructure and convert ndo_setup_tc calls for flower and u32 offloads to block callbacks. Signed-off-by:
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Jiri Pirko authored
Benefit from the newly introduced block callback infrastructure and convert ndo_setup_tc calls for flower offloads to block callbacks. Signed-off-by:
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Jiri Pirko authored
Benefit from the newly introduced block callback infrastructure and convert ndo_setup_tc calls for flower offloads to block callbacks. Signed-off-by:
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Jiri Pirko authored
Benefit from the newly introduced block callback infrastructure and convert ndo_setup_tc calls for matchall and flower offloads to block callbacks. Signed-off-by:
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Jiri Pirko authored
Use the newly introduced callbacks infrastructure and call block callbacks alongside with the existing per-netdev ndo_setup_tc. Signed-off-by:
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Jiri Pirko authored
Use the newly introduced callbacks infrastructure and call block callbacks alongside with the existing per-netdev ndo_setup_tc. Signed-off-by:
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Jiri Pirko authored
Signed-off-by:
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Jiri Pirko authored
Use the newly introduced callbacks infrastructure and call block callbacks alongside with the existing per-netdev ndo_setup_tc. Signed-off-by:
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Jiri Pirko authored
Extend the tc_setup_cb_call entrypoint function originally used only for action egress devices callbacks to call per-block callbacks as well. Signed-off-by:
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Jiri Pirko authored
Introduce infrastructure that allows drivers to register callbacks that are called whenever tc would offload inserted rule for a specific block. Signed-off-by:
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