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2019-07-02Merge branches 'ib-mfd-clk-gpio-power-regulator-rtc-5.3', ↵Lee Jones
'ib-mfd-clk-regulator-rtc-5.3', 'ib-mfd-cros-5.3' and 'ib-mfd-regulator-5.3' into ibs-for-mfd-merged
2019-07-02regulator: lp87565: Fix missing break in switch statementColin Ian King
Currently the LP87565_DEVICE_TYPE_LP87561_Q1 case does not have a break statement, causing it to fall through to a dev_err message. Fix this by adding in the missing break statement. Addresses-Coverity: ("Missing break in switch") Fixes: 7ee63bd74750 ("regulator: lp87565: Add 4-phase lp87561 regulator support") Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2019-07-02powerpc/64s/exception: generate regs clear instructions using .reptNicholas Piggin
No generated code change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: fix indenting irregularitiesNicholas Piggin
Generally, macros that result in instructions being expanded are indented by a tab, and those that don't have no indent. Fix the obvious cases that go contrary to style. No generated code change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: use a gas macro for system call handler codeNicholas Piggin
No generated code change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: remove unused BRANCH_TO_COMMONNicholas Piggin
Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: remove __BRANCH_TO_KVMNicholas Piggin
No generated code change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: move head-64.h code to exception-64s.S where it is usedNicholas Piggin
No generated code change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: move exception-64s.h code to exception-64s.S where it ↵Nicholas Piggin
is used No generated code change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: move KVM related code togetherNicholas Piggin
No generated code change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: remove STD_EXCEPTION_COMMON variantsNicholas Piggin
These are only called in one place each. No generated code change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: move EXCEPTION_PROLOG_2* to a more logical placeNicholas Piggin
No generated code change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: improve 0x500 handler codeNicholas Piggin
After the previous cleanup, it becomes possible to consolidate some common code outside the runtime alternate patching. Also remove unused labels. This results in some code change, but unchanged runtime instruction sequence. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: unwind exception-64s.h macrosNicholas Piggin
Many of these macros just specify 1-4 lines which are only called a few times each at most, and often just once. Remove this indirection. No generated code change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: Move EXCEPTION_COMMON additions into callersNicholas Piggin
More cases of code insertion via macros that does not add a great deal. All the additions have to be specified in the macro arguments, so they can just as well go after the macro. No generated code change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: Move EXCEPTION_COMMON handler and return branches ↵Nicholas Piggin
into callers The aim is to reduce the amount of indirection it takes to get through the exception handler macros, particularly where it provides little code sharing. No generated code change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: Make EXCEPTION_PROLOG_0 a gas macro for consistency ↵Nicholas Piggin
with others No generated code change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: KVM handler can set the HSRR trap bitNicholas Piggin
Move the KVM trap HSRR bit into the KVM handler, which can be conditionally applied when hsrr parameter is set. No generated code change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: merge KVM handler and skip variantsNicholas Piggin
Conditionally expand the skip case if it is specified. No generated code change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: consolidate maskable and non-maskable prologsNicholas Piggin
Conditionally expand the soft-masking test if a mask is passed in. No generated code change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: remove the "extra" macro parameterNicholas Piggin
Rather than pass in the soft-masking and KVM tests via macro that is passed to another macro to expand it, switch to usig gas macros and conditionally expand the soft-masking and KVM tests. The system reset with its idle test is open coded as it is a one-off. No generated code change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: fix sreset KVM test codeNicholas Piggin
The sreset handler KVM test theoretically should not depend on P7. In practice KVM now only supports P7 and up so no real bug fix, but this change is made now so the quirk is not propagated through cleanup patches. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: move and tidy EXCEPTION_PROLOG_2 variantsNicholas Piggin
- Re-name the macros to _REAL and _VIRT suffixes rather than no and _RELON suffix. - Move the macro definitions together in the file. - Move RELOCATABLE ifdef inside the _VIRT macro. Further consolidation between variants does not buy much here. No generated code change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: consolidate EXCEPTION_PROLOG_2 with _NORI variantNicholas Piggin
Switch to a gas macro that conditionally expands the RI clearing instruction. No generated code change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02powerpc/64s/exception: remove H concatenation for EXC_HV variantsNicholas Piggin
Replace all instances of this with gas macros that test the hsrr parameter and use the appropriate register names / labels. No generated code change. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> [mpe: Remove extraneous 2nd check for 0xea0 in SOFTEN_TEST] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02xfrm: remove a duplicated assignmentCong Wang
Fixes: 30846090a746 ("xfrm: policy: add sequence count to sync with hash resize") Cc: Florian Westphal <fw@strlen.de> Cc: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2019-07-02HID: Add another Primax PIXART OEM mouse quirkSebastian Parschauer
The PixArt OEM mice are known for disconnecting every minute in runlevel 1 or 3 if they are not always polled. So add quirk ALWAYS_POLL for this Alienware branded Primax mouse as well. Daniel Schepler (@dschepler) reported and tested the quirk. Reference: https://github.com/sriemer/fix-linux-mouse/issues/15 Signed-off-by: Sebastian Parschauer <s.parschauer@gmx.de> CC: stable@vger.kernel.org Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2019-07-02powerpc/64s/exception: Remove unused SOFTEN_VALUE_0x980Michael Ellerman
Remove SOFTEN_VALUE_0x980, it's been unused since commit dabe859ec636 ("powerpc: Give hypervisor decrementer interrupts their own handler") (Sep 2012). Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-02HID: wacom: generic: add touchring adjustment for 2nd Gen Pro SmallAaron Armstrong Skomra
Add the product ID for the 2nd Generation Intuos Pro Small to the touchring coordinate adjustment block. Signed-off-by: Aaron Armstrong Skomra <aaron.skomra@wacom.com> Reviewed-by: Ping Cheng <ping.cheng@wacom.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
2019-07-02docs: hid: convert to ReSTMauro Carvalho Chehab
Rename the HID documentation files to ReST, add an index for them and adjust in order to produce a nice html output via the Sphinx build system. While here, fix the sysfs example from hid-sensor.txt, that has a lot of "?" instead of the proper UTF-8 characters that are produced by the tree command. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
2019-07-02x86/entry/64: Fix and clean up paranoid_exitAndy Lutomirski
paranoid_exit needs to restore CR3 before GSBASE. Doing it in the opposite order crashes if the exception came from a context with user GSBASE and user CR3 -- RESTORE_CR3 cannot resture user CR3 if run with user GSBASE. This results in infinitely recursing exceptions if user code does SYSENTER with TF set if both FSGSBASE and PTI are enabled. The old code worked if user code just set TF without SYSENTER because #DB from user mode is special cased in idtentry and paranoid_exit doesn't run. Fix it by cleaning up the spaghetti code. All that paranoid_exit needs to do is to disable IRQs, handle IRQ tracing, then restore CR3, and restore GSBASE. Simply do those actions in that order. Fixes: 708078f65721 ("x86/entry/64: Handle FSGSBASE enabled paranoid entry/exit") Reported-by: Vegard Nossum <vegard.nossum@oracle.com> Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com> Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: "H . Peter Anvin" <hpa@zytor.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ravi Shankar <ravi.v.shankar@intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Link: https://lkml.kernel.org/r/59725ceb08977359489fbed979716949ad45f616.1562035429.git.luto@kernel.org
2019-07-02x86/entry/64: Don't compile ignore_sysret if 32-bit emulation is enabledAndy Lutomirski
It's only used if !CONFIG_IA32_EMULATION, so disable it in normal configs. This will save a few bytes of text and reduce confusion. Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: "BaeChang Seok" <chang.seok.bae@intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: "Bae, Chang Seok" <chang.seok.bae@intel.com> Link: https://lkml.kernel.org/r/0f7dafa72fe7194689de5ee8cfe5d83509fabcf5.1562035429.git.luto@kernel.org
2019-07-02selftests/x86: Test SYSCALL and SYSENTER manually with TF setAndy Lutomirski
Make sure that both variants of the nasty TF-in-compat-syscall are exercised regardless of what vendor's CPU is running the tests. Also change the intentional signal after SYSCALL to use ud2, which is a lot more comprehensible. This crashes the kernel due to an FSGSBASE bug right now. This test *also* detects a bug in KVM when run on an Intel host. KVM people, feel free to use it to help debug. There's a bunch of code in this test to warn instead of going into an infinite looping when the bug gets triggered. Reported-by: Vegard Nossum <vegard.nossum@oracle.com> Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: "BaeChang Seok" <chang.seok.bae@intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: kvm@vger.kernel.org Cc: "Bae, Chang Seok" <chang.seok.bae@intel.com> Link: https://lkml.kernel.org/r/5f5de10441ab2e3005538b4c33be9b1965d1bb63.1562035429.git.luto@kernel.org
2019-07-02rslib: Make some functions staticYueHaibing
Fix sparse warnings: lib/reed_solomon/test_rslib.c:313:5: warning: symbol 'ex_rs_helper' was not declared. Should it be static? lib/reed_solomon/test_rslib.c:349:5: warning: symbol 'exercise_rs' was not declared. Should it be static? lib/reed_solomon/test_rslib.c:407:5: warning: symbol 'exercise_rs_bc' was not declared. Should it be static? Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: <ferdinand.blomqvist@gmail.com> Link: https://lkml.kernel.org/r/20190702061847.26060-1-yuehaibing@huawei.com
2019-07-01Merge branch 'Add-gve-driver'David S. Miller
Catherine Sullivan says: ==================== Add gve driver This patch series adds the gve driver which will support the Compute Engine Virtual NIC that will be available in the future. v2: - Patch 1: - Remove gve_size_assert.h and use static_assert instead. - Loop forever instead of bugging if the device won't reset - Use module_pci_driver - Patch 2: - Use be16_to_cpu in the RX Seq No define - Remove unneeded ndo_change_mtu - Patch 3: - No Changes - Patch 4: - Instead of checking netif_carrier_ok in ethtool stats, just make sure v3: - Patch 1: - Remove X86 dep - Patch 2: - No changes - Patch 3: - No changes - Patch 4: - Remove unneeded memsets in ethtool stats v4: - Patch 1: - Use io[read|write]32be instead of [read|write]l(cpu_to_be32()) - Explicitly add padding to gve_adminq_set_driver_parameter - Use static where appropriate - Patch 2: - Use u64_stats_sync - Explicity add padding to gve_adminq_create_rx_queue - Fix some enianness typing issues found by kbuild - Use static where appropriate - Remove unused variables - Patch 3: - Use io[read|write]32be instead of [read|write]l(cpu_to_be32()) - Patch 4: - Use u64_stats_sync - Use static where appropriate Warnings reported by: Reported-by: kbuild test robot <lkp@intel.com> Reported-by: Julia Lawall <julia.lawall@lip6.fr> ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-01gve: Add ethtool supportCatherine Sullivan
Add support for the following ethtool commands: ethtool -s|--change devname [msglvl N] [msglevel type on|off] ethtool -S|--statistics devname ethtool -i|--driver devname ethtool -l|--show-channels devname ethtool -L|--set-channels devname ethtool -g|--show-ring devname ethtool --reset devname Signed-off-by: Catherine Sullivan <csully@google.com> Signed-off-by: Sagi Shahar <sagis@google.com> Signed-off-by: Jon Olson <jonolson@google.com> Acked-by: Willem de Bruijn <willemb@google.com> Reviewed-by: Luigi Rizzo <lrizzo@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-01gve: Add workqueue and reset supportCatherine Sullivan
Add support for the workqueue to handle management interrupts and support for resets. Signed-off-by: Catherine Sullivan <csully@google.com> Signed-off-by: Sagi Shahar <sagis@google.com> Signed-off-by: Jon Olson <jonolson@google.com> Acked-by: Willem de Bruijn <willemb@google.com> Reviewed-by: Luigi Rizzo <lrizzo@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-01gve: Add transmit and receive supportCatherine Sullivan
Add support for passing traffic. Signed-off-by: Catherine Sullivan <csully@google.com> Signed-off-by: Sagi Shahar <sagis@google.com> Signed-off-by: Jon Olson <jonolson@google.com> Acked-by: Willem de Bruijn <willemb@google.com> Reviewed-by: Luigi Rizzo <lrizzo@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-01gve: Add basic driver framework for Compute Engine Virtual NICCatherine Sullivan
Add a driver framework for the Compute Engine Virtual NIC that will be available in the future. At this point the only functionality is loading the driver. Signed-off-by: Catherine Sullivan <csully@google.com> Signed-off-by: Sagi Shahar <sagis@google.com> Signed-off-by: Jon Olson <jonolson@google.com> Acked-by: Willem de Bruijn <willemb@google.com> Reviewed-by: Luigi Rizzo <lrizzo@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-01Merge branch 'blackhole-device-to-invalidate-dst'David S. Miller
Mahesh Bandewar says: ==================== blackhole device to invalidate dst When we invalidate dst or mark it "dead", we assign 'lo' to dst->dev. First of all this assignment is racy and more over, it has MTU implications. The standard dev MTU is 1500 while the Loopback MTU is 64k. TCP code when dereferencing the dst don't check if the dst is valid or not. TCP when dereferencing a dead-dst while negotiating a new connection, may use dst device which is 'lo' instead of using the correct device. Consider the following scenario: A SYN arrives on an interface and tcp-layer while processing SYNACK finds a dst and associates it with SYNACK skb. Now before skb gets passed to L3 for processing, if that dst gets "dead" (because of the virtual device getting disappeared & then reappeared), the 'lo' gets assigned to that dst (lo MTU = 64k). Let's assume the SYN has ADV_MSS set as 9k while the output device through which this SYNACK is going to go out has standard MTU of 1500. The MTU check during the route check passes since MIN(9K, 64K) is 9k and TCP successfully negotiates 9k MSS. The subsequent data packet; bigger in size gets passed to the device and it won't be marked as GSO since the assumed MTU of the device is 9k. This either crashes the NIC and we have seen fixes that went into drivers to handle this scenario. 8914a595110a ('bnx2x: disable GSO where gso_size is too big for hardware') and 2b16f048729b ('net: create skb_gso_validate_mac_len()') and with those fixes TCP eventually recovers but not before few dropped segments. Well, I'm not a TCP expert and though we have experienced these corner cases in our environment, I could not reproduce this case reliably in my test setup to try this fix myself. However, Michael Chan <michael.chan@broadcom.com> had a setup where these fixes helped him mitigate the issue and not cause the crash. The idea here is to not alter the data-path with additional locks or smb()/rmb() barriers to avoid racy assignments but to create a new device that has really low MTU that has .ndo_start_xmit essentially a kfree_skb(). Make use of this device instead of 'lo' when marking the dst dead. First patch implements the blackhole device and second patch uses it in IPv4 and IPv6 stack while the third patch is the self test that ensures the sanity of this device. v1->v2 fixed the self-test patch to handle the conflict v2 -> v3 fixed Kconfig text/string. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-01blackhole_dev: add a selftestMahesh Bandewar
Since this is not really a device with all capabilities, this test ensures that it has *enough* to make it through the data path without causing unwanted side-effects (read crash!). Signed-off-by: Mahesh Bandewar <maheshb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-01blackhole_netdev: use blackhole_netdev to invalidate dst entriesMahesh Bandewar
Use blackhole_netdev instead of 'lo' device with lower MTU when marking dst "dead". Signed-off-by: Mahesh Bandewar <maheshb@google.com> Tested-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-01loopback: create blackhole net device similar to loopack.Mahesh Bandewar
Create a blackhole net device that can be used for "dead" dst entries instead of loopback device. This blackhole device differs from loopback in few aspects: (a) It's not per-ns. (b) MTU on this device is ETH_MIN_MTU (c) The xmit function is essentially kfree_skb(). and (d) since it's not registered it won't have ifindex. Lower MTU effectively make the device not pass the MTU check during the route check when a dst associated with the skb is dead. Signed-off-by: Mahesh Bandewar <maheshb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-01r8152: fix the setting of detecting the linking change for runtime suspendHayes Wang
1. Rename r8153b_queue_wake() to r8153_queue_wake(). 2. Correct the setting. The enable bit should be 0xd38c bit 0. Besides, the 0xd38a bit 0 and 0xd398 bit 8 have to be cleared for both enabled and disabled. Signed-off-by: Hayes Wang <hayeswang@realtek.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-01net: ethernet: broadcom: bcm63xx_enet: Remove unneeded memsetHariprasad Kelam
Remove unneeded memset as alloc_etherdev is using kvzalloc which uses __GFP_ZERO flag Signed-off-by: Hariprasad Kelam <hariprasad.kelam@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-01Merge branch 'net-netsec-Add-XDP-Support'David S. Miller
Ilias Apalodimas says: ==================== net: netsec: Add XDP Support This is a respin of https://www.spinics.net/lists/netdev/msg526066.html Since page_pool API fixes are merged into net-next we can now safely use it's DMA mapping capabilities. First patch changes the buffer allocation from napi/netdev_alloc_frag() to page_pool API. Although this will lead to slightly reduced performance (on raw packet drops only) we can use the API for XDP buffer recycling. Another side effect is a slight increase in memory usage, due to using a single page per packet. The second patch adds XDP support on the driver. There's a bunch of interesting options that come up due to the single Tx queue. Locking is needed(to avoid messing up the Tx queues since ndo_xdp_xmit and the normal stack can co-exist). We also need to track down the 'buffer type' for TX and properly free or recycle the packet depending on it's nature. Changes since RFC: - Bug fixes from Jesper and Maciej - Added page pool API to retrieve the DMA direction Changes since v1: - Use page_pool_free correctly if xdp_rxq_info_reg() failed ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-01net: netsec: add XDP supportIlias Apalodimas
The interface only supports 1 Tx queue so locking is introduced on the Tx queue if XDP is enabled to make sure .ndo_start_xmit and .ndo_xdp_xmit won't corrupt Tx ring - Performance (SMMU off) Benchmark XDP_SKB XDP_DRV xdp1 291kpps 344kpps rxdrop 282kpps 342kpps - Performance (SMMU on) Benchmark XDP_SKB XDP_DRV xdp1 167kpps 324kpps rxdrop 164kpps 323kpps Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-01net: page_pool: add helper function for retrieving dma directionIlias Apalodimas
Since the dma direction is stored in page pool params, offer an API helper for driver that choose not to keep track of it locally Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-01net: netsec: Use page_pool APIIlias Apalodimas
Use page_pool and it's DMA mapping capabilities for Rx buffers instead of netdev/napi_alloc_frag() Although this will result in a slight performance penalty on small sized packets (~10%) the use of the API will allow to easily add XDP support. The penalty won't be visible in network testing i.e ipef/netperf etc, it only happens during raw packet drops. Furthermore we intend to add recycling capabilities on the API in the future. Once the recycling is added the performance penalty will go away. The only 'real' penalty is the slightly increased memory usage, since we now allocate a page per packet instead of the amount of bytes we need + skb metadata (difference is roughly 2kb per packet). With a minimum of 4BG of RAM on the only SoC that has this NIC the extra memory usage is negligible (a bit more on 64K pages) Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-01net/tls: make sure offload also gets the keys wipedJakub Kicinski
Commit 86029d10af18 ("tls: zero the crypto information from tls_context before freeing") added memzero_explicit() calls to clear the key material before freeing struct tls_context, but it missed tls_device.c has its own way of freeing this structure. Replace the missing free. Fixes: 86029d10af18 ("tls: zero the crypto information from tls_context before freeing") Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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