- 28 11月, 2018 15 次提交
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由 Dmitry Bezrukov 提交于
Read/write command register defines and functions Signed-off-by: NDmitry Bezrukov <dmitry.bezrukov@aquantia.com> Signed-off-by: NIgor Russkikh <igor.russkikh@aquantia.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Dmitry Bezrukov 提交于
Initialize net_device_ops structure Signed-off-by: NDmitry Bezrukov <dmitry.bezrukov@aquantia.com> Signed-off-by: NIgor Russkikh <igor.russkikh@aquantia.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Dmitry Bezrukov 提交于
Initialize usb_driver structure skeleton Signed-off-by: NDmitry Bezrukov <dmitry.bezrukov@aquantia.com> Signed-off-by: NIgor Russkikh <igor.russkikh@aquantia.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 yupeng 提交于
Add explaination of below counters: TcpExtTCPRcvCoalesce TcpExtTCPAutoCorking TcpExtTCPOrigDataSent TCPSynRetrans TCPFastOpenActiveFail TcpExtListenOverflows TcpExtListenDrops TcpExtTCPHystartTrainDetect TcpExtTCPHystartTrainCwnd TcpExtTCPHystartDelayDetect TcpExtTCPHystartDelayCwnd Signed-off-by: Nyupeng <yupeng0921@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Ido Schimmel says: ==================== mlxsw: Prepare for VLAN-aware bridge w/VxLAN The driver is using 802.1Q filtering identifiers (FIDs) to represent the different VLANs in the VLAN-aware bridge (only one is supported). However, the device cannot assign a VNI to such FIDs, which prevents the driver from supporting the enslavement of VxLAN devices to the VLAN-aware bridge. This patchset works around this limitation by emulating 802.1Q FIDs using 802.1D FIDs, which can be assigned a VNI and so far have only been used in conjunction with VLAN-unaware bridges. The downside of this approach is that multiple {Port,VID}->FID entries are required, whereas a single VID->FID entry is required with "true" 802.1Q FIDs. First four patches introduce the new FID family of emulated 802.1Q FIDs and the associated type of router interfaces (RIFs). Last patch flips the driver to use this new FID family. The diff is relatively small because the internal implementation of each FID family is contained and hidden in spectrum_fid.c. Different internal users (e.g., bridge, router) are aware of the different FID types, but do not care about their internal implementation. This makes it trivial to swap the current implementation of 802.1Q FIDs with the new one, using 802.1D FIDs. ==================== Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ido Schimmel 提交于
Replace 802.1Q FIDs and VLAN RIFs with their emulated counterparts. The emulated 802.1Q FIDs are actually 802.1D FIDs and thus use the same flood tables, of per-FID type. Therefore, add 4K-1 entries to the per-FID flood tables for the new FIDs and get rid of the FID-offset flood tables that were used by the old 802.1Q FIDs. Signed-off-by: NIdo Schimmel <idosch@mellanox.com> Reviewed-by: NPetr Machata <petrm@mellanox.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ido Schimmel 提交于
Router interfaces (RIFs) constructed on top of VLAN-aware bridges are of "VLAN" type, whereas RIFs constructed on top of VLAN-unaware bridges of "FID" type. In other words, the RIF type is derived from the underlying FID type. VLAN RIFs are used on top of 802.1Q FIDs, whereas FID RIFs are used on top of 802.1D FIDs. Since the previous patch emulated 802.1Q FIDs using 802.1D FIDs, this patch emulates VLAN RIFs using FID RIFs. Signed-off-by: NIdo Schimmel <idosch@mellanox.com> Reviewed-by: NPetr Machata <petrm@mellanox.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ido Schimmel 提交于
The driver uses 802.1Q FIDs when offloading a VLAN-aware bridge. Unfortunately, it is not possible to assign a VNI to such FIDs, which prompts the driver to forbid the enslavement of VxLAN devices to a VLAN-aware bridge. Workaround this hardware limitation by creating a new family of FIDs, emulated 802.1Q FIDs. These FIDs are emulated using 802.1D FIDs, which can be assigned a VNI. The downside of this approach is that multiple {Port, VID}->FID entries are required, whereas only a single VID->FID is required with "true" 802.1Q FIDs. Signed-off-by: NIdo Schimmel <idosch@mellanox.com> Reviewed-by: NPetr Machata <petrm@mellanox.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ido Schimmel 提交于
802.1D FIDs use a per-FID flood table, where the flood index into the table is calculated by subtracting 4K from the FID's index. Currently, 802.1D FIDs start at 4K, so the calculation is correct, but if it was ever to change, the calculation will no longer be correct. In addition, this change will allow us to reuse the flood index calculation function in the next patch, where we are going to emulate 802.1Q FIDs using 802.1D FIDs. Signed-off-by: NIdo Schimmel <idosch@mellanox.com> Reviewed-by: NPetr Machata <petrm@mellanox.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ido Schimmel 提交于
When configuring an FDB entry pointing to a LAG netdev (or its upper), the driver should only set the 'lag_vid' field when the FID (filtering identifier) is of 802.1D type. Extend the 802.1D FID family with an attribute indicating whether this field should be set and based on its value set the field or leave it blank. Signed-off-by: NIdo Schimmel <idosch@mellanox.com> Reviewed-by: NPetr Machata <petrm@mellanox.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 YueHaibing 提交于
Fixes gcc '-Wunused-but-set-variable' warning: drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c:260:7: warning: variable 'err' set but not used [-Wunused-but-set-variable] 'err' should be returned while set MPI_DEINIT state fails in hw_atl_utils_soft_reset. Fixes: cce96d18 ("net: aquantia: Regression on reset with 1.x firmware") Signed-off-by: NYueHaibing <yuehaibing@huawei.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Nikolay Aleksandrov says: ==================== net: bridge: add an option to disabe linklocal learning This set adds a new bridge option which can control learning from link-local packets, by default learning is on to be consistent and avoid breaking users expectations. If the new no_linklocal_learn option is enabled then the bridge will stop learning from link-local packets. In order to save space for future boolean options, patch 01 adds a new bool option API that uses a bitmask to control boolean options. The bridge is by far the largest netlink attr user and we keep adding simple boolean options which waste nl attr ids and space. We're not directly mapping these to the in-kernel bridge flags because some might require more complex configuration changes (e.g. if we were to add the per port vlan stats now, it'd require multiple checks before changing value). Any new bool option needs to be handled by both br_boolopt_toggle and get in order to be able to retrieve its state later. All such options are automatically exported via netlink. The behaviour of setting such options is consistent with netlink option handling when a missing option is being set (silently ignored), e.g. when a newer iproute2 is used on older kernel. All supported options are exported via bm's optmask when dumping the new attribute. v2: address Andrew Lunn's comments, squash a minor change into patch 01, export all supported options via optmask when dumping, add patch 03, pass down extack so options can return meaningful errors, add WARN_ON on unsupported options (should not happen) ==================== Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Nikolay Aleksandrov 提交于
Now that we have at least one bool option, we can export all of the supported bool options via optmask when dumping them. v2: new patch Signed-off-by: NNikolay Aleksandrov <nikolay@cumulusnetworks.com> Reviewed-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Nikolay Aleksandrov 提交于
Use the new boolopt API to add an option which disables learning from link-local packets. The default is kept as before and learning is enabled. This is a simple map from a boolopt bit to a bridge private flag that is tested before learning. v2: pass NULL for extack via sysfs Signed-off-by: NNikolay Aleksandrov <nikolay@cumulusnetworks.com> Reviewed-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Nikolay Aleksandrov 提交于
We have been adding many new bridge options, a big number of which are boolean but still take up netlink attribute ids and waste space in the skb. Recently we discussed learning from link-local packets[1] and decided yet another new boolean option will be needed, thus introducing this API to save some bridge nl space. The API supports changing the value of multiple boolean options at once via the br_boolopt_multi struct which has an optmask (which options to set, bit per opt) and optval (options' new values). Future boolean options will only be added to the br_boolopt_id enum and then will have to be handled in br_boolopt_toggle/get. The API will automatically add the ability to change and export them via netlink, sysfs can use the single boolopt function versions to do the same. The behaviour with failing/succeeding is the same as with normal netlink option changing. If an option requires mapping to internal kernel flag or needs special configuration to be enabled then it should be handled in br_boolopt_toggle. It should also be able to retrieve an option's current state via br_boolopt_get. v2: WARN_ON() on unsupported option as that shouldn't be possible and also will help catch people who add new options without handling them for both set and get. Pass down extack so if an option desires it could set it on error and be more user-friendly. [1] https://www.spinics.net/lists/netdev/msg532698.htmlSigned-off-by: NNikolay Aleksandrov <nikolay@cumulusnetworks.com> Reviewed-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 27 11月, 2018 15 次提交
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由 David S. Miller 提交于
Tiwei Bie says: ==================== virtio: support packed ring This patch set implements packed ring support in virtio driver. A performance test between pktgen (pktgen_sample03_burst_single_flow.sh) and DPDK vhost (testpmd/rxonly/vhost-PMD) has been done, I saw ~30% performance gain in packed ring in this case. To make this patch set work with below patch set for vhost, some hacks are needed to set the _F_NEXT flag in indirect descriptors (this should be fixed in vhost): https://lkml.org/lkml/2018/7/3/33 v2 -> v3: - Use leXX instead of virtioXX (MST); - Refactor split ring first (MST); - Add debug helpers (MST); - Put split/packed ring specific fields in sub structures (MST); - Handle normal descriptors and indirect descriptors differently (MST); - Track the DMA addr/len related info in a separate structure (MST); - Calculate AVAIL/USED flags only when wrap counter wraps (MST); - Define a struct/union to read event structure (MST); - Define a macro for wrap counter bit in uapi (MST); - Define the AVAIL/USED bits as shifts instead of values (MST); - s/_F_/_FLAG_/ in VRING_PACKED_EVENT_* as they are values (MST); - Drop the notify workaround for QEMU's tx-timer in packed ring (MST); v1 -> v2: - Use READ_ONCE() to read event off_wrap and flags together (Jason); - Add comments related to ccw (Jason); RFC v6 -> v1: - Avoid extra virtio_wmb() in virtqueue_enable_cb_delayed_packed() when event idx is off (Jason); - Fix bufs calculation in virtqueue_enable_cb_delayed_packed() (Jason); - Test the state of the desc at used_idx instead of last_used_idx in virtqueue_enable_cb_delayed_packed() (Jason); - Save wrap counter (as part of queue state) in the return value of virtqueue_enable_cb_prepare_packed(); - Refine the packed ring definitions in uapi; - Rebase on the net-next tree; RFC v5 -> RFC v6: - Avoid tracking addr/len/flags when DMA API isn't used (MST/Jason); - Define wrap counter as bool (Jason); - Use ALIGN() in vring_init_packed() (Jason); - Avoid using pointer to track `next` in detach_buf_packed() (Jason); - Add comments for barriers (Jason); - Don't enable RING_PACKED on ccw for now (noticed by Jason); - Refine the memory barrier in virtqueue_poll(); - Add a missing memory barrier in virtqueue_enable_cb_delayed_packed(); - Remove the hacks in virtqueue_enable_cb_prepare_packed(); RFC v4 -> RFC v5: - Save DMA addr, etc in desc state (Jason); - Track used wrap counter; RFC v3 -> RFC v4: - Make ID allocation support out-of-order (Jason); - Various fixes for EVENT_IDX support; RFC v2 -> RFC v3: - Split into small patches (Jason); - Add helper virtqueue_use_indirect() (Jason); - Just set id for the last descriptor of a list (Jason); - Calculate the prev in virtqueue_add_packed() (Jason); - Fix/improve desc suppression code (Jason/MST); - Refine the code layout for XXX_split/packed and wrappers (MST); - Fix the comments and API in uapi (MST); - Remove the BUG_ON() for indirect (Jason); - Some other refinements and bug fixes; RFC v1 -> RFC v2: - Add indirect descriptor support - compile test only; - Add event suppression supprt - compile test only; - Move vring_packed_init() out of uapi (Jason, MST); - Merge two loops into one in virtqueue_add_packed() (Jason); - Split vring_unmap_one() for packed ring and split ring (Jason); - Avoid using '%' operator (Jason); - Rename free_head -> next_avail_idx (Jason); - Add comments for virtio_wmb() in virtqueue_add_packed() (Jason); - Some other refinements and bug fixes; ==================== Acked-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tiwei Bie 提交于
Advertize the packed ring layout support. Signed-off-by: NTiwei Bie <tiwei.bie@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tiwei Bie 提交于
Currently, ccw, vop and remoteproc need some legacy virtio APIs to create or access virtio rings, which are not supported by packed ring. So disable packed ring on these transports for now. Signed-off-by: NTiwei Bie <tiwei.bie@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tiwei Bie 提交于
Leverage the EVENT_IDX feature in packed ring to suppress events when it's available. Signed-off-by: NTiwei Bie <tiwei.bie@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tiwei Bie 提交于
Introduce the packed ring support. Packed ring can only be created by vring_create_virtqueue() and each chunk of packed ring will be allocated individually. Packed ring can not be created on preallocated memory by vring_new_virtqueue() or the likes currently. Signed-off-by: NTiwei Bie <tiwei.bie@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tiwei Bie 提交于
Cache whether we will use DMA API, instead of doing the check every time. We are going to check whether DMA API is used more often in packed ring. Signed-off-by: NTiwei Bie <tiwei.bie@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tiwei Bie 提交于
Introduce a specific function to create the split ring. And also move the DMA allocation and size information to the .split sub-structure. Signed-off-by: NTiwei Bie <tiwei.bie@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tiwei Bie 提交于
Put the split ring's desc state into the .split sub-structure, and allocate desc state for split ring separately, this makes the code more readable and more consistent with what we will do for packed ring. Signed-off-by: NTiwei Bie <tiwei.bie@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tiwei Bie 提交于
Introduce a helper to check whether we will use indirect feature. It will be used by packed ring too. Signed-off-by: NTiwei Bie <tiwei.bie@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tiwei Bie 提交于
Introduce debug helpers for last_add_time update, check and invalid. They will be used by packed ring too. Signed-off-by: NTiwei Bie <tiwei.bie@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tiwei Bie 提交于
Put the split ring specific fields in a sub-struct named as "split" to avoid misuse after introducing packed ring. There is no functional change. Signed-off-by: NTiwei Bie <tiwei.bie@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tiwei Bie 提交于
Put the xxx_split() functions together to make the code more readable and avoid misuse after introducing the packed ring. There is no functional change. Signed-off-by: NTiwei Bie <tiwei.bie@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tiwei Bie 提交于
Add _split suffix for split ring specific functions. This is a preparation for introducing the packed ring support. There is no functional change. Signed-off-by: NTiwei Bie <tiwei.bie@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tiwei Bie 提交于
Add types and macros for packed ring. Signed-off-by: NTiwei Bie <tiwei.bie@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next由 David S. Miller 提交于
Daniel Borkmann says: ==================== pull-request: bpf-next 2018-11-26 The following pull-request contains BPF updates for your *net-next* tree. The main changes are: 1) Extend BTF to support function call types and improve the BPF symbol handling with this info for kallsyms and bpftool program dump to make debugging easier, from Martin and Yonghong. 2) Optimize LPM lookups by making longest_prefix_match() handle multiple bytes at a time, from Eric. 3) Adds support for loading and attaching flow dissector BPF progs from bpftool, from Stanislav. 4) Extend the sk_lookup() helper to be supported from XDP, from Nitin. 5) Enable verifier to support narrow context loads with offset > 0 to adapt to LLVM code generation (currently only offset of 0 was supported). Add test cases as well, from Andrey. 6) Simplify passing device functions for offloaded BPF progs by adding callbacks to bpf_prog_offload_ops instead of ndo_bpf. Also convert nfp and netdevsim to make use of them, from Quentin. 7) Add support for sock_ops based BPF programs to send events to the perf ring-buffer through perf_event_output helper, from Sowmini and Daniel. 8) Add read / write support for skb->tstamp from tc BPF and cg BPF programs to allow for supporting rate-limiting in EDT qdiscs like fq from BPF side, from Vlad. 9) Extend libbpf API to support map in map types and add test cases for it as well to BPF kselftests, from Nikita. 10) Account the maximum packet offset accessed by a BPF program in the verifier and use it for optimizing nfp JIT, from Jiong. 11) Fix error handling regarding kprobe_events in BPF sample loader, from Daniel T. 12) Add support for queue and stack map type in bpftool, from David. ==================== Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 26 11月, 2018 8 次提交
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由 David Calavera 提交于
Make the formatting for map_type_name array consistent. Signed-off-by: NDavid Calavera <david.calavera@gmail.com> Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
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由 Colin Ian King 提交于
There is a spelling mistake in a btf_verifier_log_member message, fix it. Signed-off-by: NColin Ian King <colin.king@canonical.com> Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
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由 Rustam Kovhaev 提交于
Building tags produces warning: ctags: Warning: kernel/bpf/local_storage.c:10: null expansion of name pattern "\1" Let's use the same fix as in commit 25528213 ("tags: Fix DEFINE_PER_CPU expansions"), even though it violates the usual code style. Signed-off-by: NRustam Kovhaev <rkovhaev@gmail.com> Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
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由 Eric Dumazet 提交于
I do not see how one can effectively use skb_insert() without holding some kind of lock. Otherwise other cpus could have changed the list right before we have a chance of acquiring list->lock. Only existing user is in drivers/infiniband/hw/nes/nes_mgt.c and this one probably meant to use __skb_insert() since it appears nesqp->pau_list is protected by nesqp->pau_lock. This looks like nesqp->pau_lock could be removed, since nesqp->pau_list.lock could be used instead. Signed-off-by: NEric Dumazet <edumazet@google.com> Cc: Faisal Latif <faisal.latif@intel.com> Cc: Doug Ledford <dledford@redhat.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: linux-rdma <linux-rdma@vger.kernel.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Colin Ian King 提交于
A recent change added a null check on p->dev after p->dev was being dereferenced by the ns_capable check on p->dev. It turns out that neither the p->dev and p->br null checks are necessary, and can be removed, which cleans up a static analyis warning. As Nikolay Aleksandrov noted, these checks can be removed because: "My reasoning of why it shouldn't be possible: - On port add new_nbp() sets both p->dev and p->br before creating kobj/sysfs - On port del (trickier) del_nbp() calls kobject_del() before call_rcu() to destroy the port which in turn calls sysfs_remove_dir() which uses kernfs_remove() which deactivates (shouldn't be able to open new files) and calls kernfs_drain() to drain current open/mmaped files in the respective dir before continuing, thus making it impossible to open a bridge port sysfs file with p->dev and p->br equal to NULL. So I think it's safe to remove those checks altogether. It'd be nice to get a second look over my reasoning as I might be missing something in sysfs/kernfs call path." Thanks to Nikolay Aleksandrov's suggestion to remove the check and David Miller for sanity checking this. Detected by CoverityScan, CID#751490 ("Dereference before null check") Fixes: a5f3ea54 ("net: bridge: add support for raw sysfs port options") Signed-off-by: NColin Ian King <colin.king@canonical.com> Acked-by: NNikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Heiner Kallweit says: ==================== r8169: make use of xmit_more and __netdev_sent_queue This series adds helper __netdev_sent_queue to the core and makes use of it in the r8169 driver. Heiner Kallweit (2): net: core: add __netdev_sent_queue as variant of __netdev_tx_sent_queue r8169: make use of xmit_more and __netdev_sent_queue v2: - fix minor style issue ==================== Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Heiner Kallweit 提交于
Make use of xmit_more and add the functionality introduced with 3e59020a ("net: bql: add __netdev_tx_sent_queue()"). I used the mlx4 driver as template. Signed-off-by: NHeiner Kallweit <hkallweit1@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Heiner Kallweit 提交于
Similar to netdev_sent_queue add helper __netdev_sent_queue as variant of __netdev_tx_sent_queue. Signed-off-by: NHeiner Kallweit <hkallweit1@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 25 11月, 2018 2 次提交
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由 Willem de Bruijn 提交于
Packet sockets with PACKET_TX_RING send skbs with user data in frags. Before commit 5cd8d46e ("packet: copy user buffers before orphan or clone") ring slots could be released prematurely, possibly allowing a process to overwrite data still in flight. This test opens two packet sockets, one to send and one to read. The sender has a tx ring of one slot. It sends two packets with different payload, then reads both and verifies their payload. Before the above commit, both receive calls return the same data as the send calls use the same buffer. From the commit, the clone needed for looping onto a packet socket triggers an skb_copy_ubufs to create a private copy. The separate sends each arrive correctly. Signed-off-by: NWillem de Bruijn <willemb@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Colin Ian King 提交于
Currently dev is dereferenced by the call dev_net(dev) before dev is null checked. Fix this by null checking dev before the potential null pointer dereference. Detected by CoverityScan, CID#1462955 ("Dereference before null check") Fixes: 23790ef1 ("net: qualcomm: rmnet: Allow to configure flags for existing devices") Signed-off-by: NColin Ian King <colin.king@canonical.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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