- 01 Dec, 2021 5 commits
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Tariq Toukan authored
Transport Interface Receive (TIR) objects perform the packet processing and reassembly and is also responsible for demultiplexing the packets into the different RQs. There are certain TIR context attributes that propagate to the pointed RQs and applied to them (like packet_merge offloads (LRO/SHAMPO) and tunneled_offload_en). When TIRs do not agree on attributes values, a "last one wins" policy is applied. Hence, if not synced properly, a race between TIR params update and a concurrent TIR create/modify operation might yield to a mismatch between the shadow parameters in SW and the actual applied state of the RQs in HW. tunneled_offload_en is a fixed attribute per profile, while packet merge offload state might be toggled and get out-of-sync. When this happens, packet_merge offload might be working although not requested, or the opposite. All updates to packet_merge state and all create/modify operations of regular redirection/steering TIRs are done under the same priv->state_lock, so they do not run in parallel, and no race is possible. However, there are other kind of TIRs (acceleration offloads TIRs, like TLS TIRs) which are created on demand for each new connection without holding the coarse priv->state_lock, hence might race. Fix this by synchronizing all packet_merge state reads and writes against all TIR create/modify operations. Include the modify operations of the regular redirection steering TIRs under the new lock, for better code layering and division of responsibilities. Fixes: 1182f365 ("net/mlx5e: kTLS, Add kTLS RX HW offload support") Signed-off-by:
Tariq Toukan <tariqt@nvidia.com> Reviewed-by:
Moshe Shemesh <moshe@nvidia.com> Reviewed-by:
Maxim Mikityanskiy <maximmi@nvidia.com> Signed-off-by:
Saeed Mahameed <saeedm@nvidia.com>
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Raed Salem authored
The cited patch added the IPsec support to uplink representor, however as uplink representors have his private statistics where IPsec stats is not part of it, that effectively makes IPsec stats hidden when uplink representor stats queried. Resolve by adding IPsec stats to uplink representor private statistics. Fixes: 5589b8f1 ("net/mlx5e: Add IPsec support to uplink representor") Signed-off-by:
Raed Salem <raeds@nvidia.com> Reviewed-by:
Alaa Hleihel <alaa@nvidia.com> Signed-off-by:
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Raed Salem authored
Current code wrongly uses the skb->protocol field which reflects the outer l3 protocol to set the inner l3 type in Software Parser (SWP) fields settings in the ethernet segment (eseg) in flows where inner l3 exists like in Vxlan over ESP flow, the above method wrongly use the outer protocol type instead of the inner one. thus breaking cases where inner and outer headers have different protocols. Fix by setting the inner l3 type in SWP according to the inner l3 ip header version. Fixes: 2ac9cfe7 ("net/mlx5e: IPSec, Add Innova IPSec offload TX data path") Signed-off-by:
Maor Dickman <maord@nvidia.com> Signed-off-by:
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Randy Dunlap authored
Fix section mismatch warnings in xtsonic. The first one appears to be bogus and after fixing the second one, the first one is gone. WARNING: modpost: vmlinux.o(.text+0x529adc): Section mismatch in reference from the function sonic_get_stats() to the function .init.text:set_reset_devices() The function sonic_get_stats() references the function __init set_reset_devices(). This is often because sonic_get_stats lacks a __init annotation or the annotation of set_reset_devices is wrong. WARNING: modpost: vmlinux.o(.text+0x529b3b): Section mismatch in reference from the function xtsonic_probe() to the function .init.text:sonic_probe1() The function xtsonic_probe() references the function __init sonic_probe1(). This is often because xtsonic_probe lacks a __init annotation or the annotation of sonic_probe1 is wrong. Fixes: 74f2a5f0 ("xtensa: Add support for the Sonic Ethernet device for the XT2000 board.") Signed-off-by:
Randy Dunlap <rdunlap@infradead.org> Reported-by:
kernel test robot <lkp@intel.com> Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Cc: Finn Thain <fthain@telegraphics.com.au> Cc: Chris Zankel <chris@zankel.net> Cc: linux-xtensa@linux-xtensa.org Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Acked-by:
Max Filippov <jcmvbkbc@gmail.com> Link: https://lore.kernel.org/r/20211130063947.7529-1-rdunlap@infradead.orgSigned-off-by:
Jakub Kicinski <kuba@kernel.org>
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Harshit Mogalapalli authored
Adding a check on len parameter to avoid empty skb. This prevents a division error in netem_enqueue function which is caused when skb->len=0 and skb->data_len=0 in the randomized corruption step as shown below. skb->data[prandom_u32() % skb_headlen(skb)] ^= 1<<(prandom_u32() % 8); Crash Report: [ 343.170349] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 343.216110] netem: version 1.3 [ 343.235841] divide error: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 343.236680] CPU: 3 PID: 4288 Comm: reproducer Not tainted 5.16.0-rc1+ [ 343.237569] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-2.el7 04/01/2014 [ 343.238707] RIP: 0010:netem_enqueue+0x1590/0x33c0 [sch_netem] [ 343.239499] Code: 89 85 58 ff ff ff e8 5f 5d e9 d3 48 8b b5 48 ff ff ff 8b 8d 50 ff ff ff 8b 85 58 ff ff ff 48 8b bd 70 ff ff ff 31 d2 2b 4f 74 <f7> f1 48 b8 00 00 00 00 00 fc ff df 49 01 d5 4c 89 e9 48 c1 e9 03 [ 343.241883] RSP: 0018:ffff88800bcd7368 EFLAGS: 00010246 [ 343.242589] RAX: 00000000ba7c0a9c RBX: 0000000000000001 RCX: 0000000000000000 [ 343.243542] RDX: 0000000000000000 RSI: ffff88800f8edb10 RDI: ffff88800f8eda40 [ 343.244474] RBP: ffff88800bcd7458 R08: 0000000000000000 R09: ffffffff94fb8445 [ 343.245403] R10: ffffffff94fb8336 R11: ffffffff94fb8445 R12: 0000000000000000 [ 343.246355] R13: ffff88800a5a7000 R14: ffff88800a5b5800 R15: 0000000000000020 [ 343.247291] FS: 00007fdde2bd7700(0000) GS:ffff888109780000(0000) knlGS:0000000000000000 [ 343.248350] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 343.249120] CR2: 00000000200000c0 CR3: 000000000ef4c000 CR4: 00000000000006e0 [ 343.250076] Call Trace: [ 343.250423] <TASK> [ 343.250713] ? memcpy+0x4d/0x60 [ 343.251162] ? netem_init+0xa0/0xa0 [sch_netem] [ 343.251795] ? __sanitizer_cov_trace_pc+0x21/0x60 [ 343.252443] netem_enqueue+0xe28/0x33c0 [sch_netem] [ 343.253102] ? stack_trace_save+0x87/0xb0 [ 343.253655] ? filter_irq_stacks+0xb0/0xb0 [ 343.254220] ? netem_init+0xa0/0xa0 [sch_netem] [ 343.254837] ? __kasan_check_write+0x14/0x20 [ 343.255418] ? _raw_spin_lock+0x88/0xd6 [ 343.255953] dev_qdisc_enqueue+0x50/0x180 [ 343.256508] __dev_queue_xmit+0x1a7e/0x3090 [ 343.257083] ? netdev_core_pick_tx+0x300/0x300 [ 343.257690] ? check_kcov_mode+0x10/0x40 [ 343.258219] ? _raw_spin_unlock_irqrestore+0x29/0x40 [ 343.258899] ? __kasan_init_slab_obj+0x24/0x30 [ 343.259529] ? setup_object.isra.71+0x23/0x90 [ 343.260121] ? new_slab+0x26e/0x4b0 [ 343.260609] ? kasan_poison+0x3a/0x50 [ 343.261118] ? kasan_unpoison+0x28/0x50 [ 343.261637] ? __kasan_slab_alloc+0x71/0x90 [ 343.262214] ? memcpy+0x4d/0x60 [ 343.262674] ? write_comp_data+0x2f/0x90 [ 343.263209] ? __kasan_check_write+0x14/0x20 [ 343.263802] ? __skb_clone+0x5d6/0x840 [ 343.264329] ? __sanitizer_cov_trace_pc+0x21/0x60 [ 343.264958] dev_queue_xmit+0x1c/0x20 [ 343.265470] netlink_deliver_tap+0x652/0x9c0 [ 343.266067] netlink_unicast+0x5a0/0x7f0 [ 343.266608] ? netlink_attachskb+0x860/0x860 [ 343.267183] ? __sanitizer_cov_trace_pc+0x21/0x60 [ 343.267820] ? write_comp_data+0x2f/0x90 [ 343.268367] netlink_sendmsg+0x922/0xe80 [ 343.268899] ? netlink_unicast+0x7f0/0x7f0 [ 343.269472] ? __sanitizer_cov_trace_pc+0x21/0x60 [ 343.270099] ? write_comp_data+0x2f/0x90 [ 343.270644] ? netlink_unicast+0x7f0/0x7f0 [ 343.271210] sock_sendmsg+0x155/0x190 [ 343.271721] ____sys_sendmsg+0x75f/0x8f0 [ 343.272262] ? kernel_sendmsg+0x60/0x60 [ 343.272788] ? write_comp_data+0x2f/0x90 [ 343.273332] ? write_comp_data+0x2f/0x90 [ 343.273869] ___sys_sendmsg+0x10f/0x190 [ 343.274405] ? sendmsg_copy_msghdr+0x80/0x80 [ 343.274984] ? slab_post_alloc_hook+0x70/0x230 [ 343.275597] ? futex_wait_setup+0x240/0x240 [ 343.276175] ? security_file_alloc+0x3e/0x170 [ 343.276779] ? write_comp_data+0x2f/0x90 [ 343.277313] ? __sanitizer_cov_trace_pc+0x21/0x60 [ 343.277969] ? write_comp_data+0x2f/0x90 [ 343.278515] ? __fget_files+0x1ad/0x260 [ 343.279048] ? __sanitizer_cov_trace_pc+0x21/0x60 [ 343.279685] ? write_comp_data+0x2f/0x90 [ 343.280234] ? __sanitizer_cov_trace_pc+0x21/0x60 [ 343.280874] ? sockfd_lookup_light+0xd1/0x190 [ 343.281481] __sys_sendmsg+0x118/0x200 [ 343.281998] ? __sys_sendmsg_sock+0x40/0x40 [ 343.282578] ? alloc_fd+0x229/0x5e0 [ 343.283070] ? write_comp_data+0x2f/0x90 [ 343.283610] ? write_comp_data+0x2f/0x90 [ 343.284135] ? __sanitizer_cov_trace_pc+0x21/0x60 [ 343.284776] ? ktime_get_coarse_real_ts64+0xb8/0xf0 [ 343.285450] __x64_sys_sendmsg+0x7d/0xc0 [ 343.285981] ? syscall_enter_from_user_mode+0x4d/0x70 [ 343.286664] do_syscall_64+0x3a/0x80 [ 343.287158] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 343.287850] RIP: 0033:0x7fdde24cf289 [ 343.288344] Code: 01 00 48 81 c4 80 00 00 00 e9 f1 fe ff ff 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d b7 db 2c 00 f7 d8 64 89 01 48 [ 343.290729] RSP: 002b:00007fdde2bd6d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 343.291730] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdde24cf289 [ 343.292673] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000004 [ 343.293618] RBP: 00007fdde2bd6e20 R08: 0000000100000001 R09: 0000000000000000 [ 343.294557] R10: 0000000100000001 R11: 0000000000000246 R12: 0000000000000000 [ 343.295493] R13: 0000000000021000 R14: 0000000000000000 R15: 00007fdde2bd7700 [ 343.296432] </TASK> [ 343.296735] Modules linked in: sch_netem ip6_vti ip_vti ip_gre ipip sit ip_tunnel geneve macsec macvtap tap ipvlan macvlan 8021q garp mrp hsr wireguard libchacha20poly1305 chacha_x86_64 poly1305_x86_64 ip6_udp_tunnel udp_tunnel libblake2s blake2s_x86_64 libblake2s_generic curve25519_x86_64 libcurve25519_generic libchacha xfrm_interface xfrm6_tunnel tunnel4 veth netdevsim psample batman_adv nlmon dummy team bonding tls vcan ip6_gre ip6_tunnel tunnel6 gre tun ip6t_rpfilter ipt_REJECT nf_reject_ipv4 ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set ebtable_nat ebtable_broute ip6table_nat ip6table_mangle ip6table_security ip6table_raw iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_security iptable_raw ebtable_filter ebtables rfkill ip6table_filter ip6_tables iptable_filter ppdev bochs drm_vram_helper drm_ttm_helper ttm drm_kms_helper cec parport_pc drm joydev floppy parport sg syscopyarea sysfillrect sysimgblt i2c_piix4 qemu_fw_cfg fb_sys_fops pcspkr [ 343.297459] ip_tables xfs virtio_net net_failover failover sd_mod sr_mod cdrom t10_pi ata_generic pata_acpi ata_piix libata virtio_pci virtio_pci_legacy_dev serio_raw virtio_pci_modern_dev dm_mirror dm_region_hash dm_log dm_mod [ 343.311074] Dumping ftrace buffer: [ 343.311532] (ftrace buffer empty) [ 343.312040] ---[ end trace a2e3db5a6ae05099 ]--- [ 343.312691] RIP: 0010:netem_enqueue+0x1590/0x33c0 [sch_netem] [ 343.313481] Code: 89 85 58 ff ff ff e8 5f 5d e9 d3 48 8b b5 48 ff ff ff 8b 8d 50 ff ff ff 8b 85 58 ff ff ff 48 8b bd 70 ff ff ff 31 d2 2b 4f 74 <f7> f1 48 b8 00 00 00 00 00 fc ff df 49 01 d5 4c 89 e9 48 c1 e9 03 [ 343.315893] RSP: 0018:ffff88800bcd7368 EFLAGS: 00010246 [ 343.316622] RAX: 00000000ba7c0a9c RBX: 0000000000000001 RCX: 0000000000000000 [ 343.317585] RDX: 0000000000000000 RSI: ffff88800f8edb10 RDI: ffff88800f8eda40 [ 343.318549] RBP: ffff88800bcd7458 R08: 0000000000000000 R09: ffffffff94fb8445 [ 343.319503] R10: ffffffff94fb8336 R11: ffffffff94fb8445 R12: 0000000000000000 [ 343.320455] R13: ffff88800a5a7000 R14: ffff88800a5b5800 R15: 0000000000000020 [ 343.321414] FS: 00007fdde2bd7700(0000) GS:ffff888109780000(0000) knlGS:0000000000000000 [ 343.322489] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 343.323283] CR2: 00000000200000c0 CR3: 000000000ef4c000 CR4: 00000000000006e0 [ 343.324264] Kernel panic - not syncing: Fatal exception in interrupt [ 343.333717] Dumping ftrace buffer: [ 343.334175] (ftrace buffer empty) [ 343.334653] Kernel Offset: 0x13600000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 343.336027] Rebooting in 86400 seconds.. Reported-by:
syzkaller <syzkaller@googlegroups.com> Signed-off-by:
Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com> Link: https://lore.kernel.org/r/20211129175328.55339-1-harshit.m.mogalapalli@oracle.comSigned-off-by:
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- 30 Nov, 2021 17 commits
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Karsten Graul authored
Add Alexandra and Wenjia as maintainers for drivers/s390/net and iucv. Also, remove myself as maintainer for these areas. Signed-off-by:
Karsten Graul <kgraul@linux.ibm.com> Acked-by:
Alexandra Winter <wintera@linux.ibm.com> Acked-by:
Wenjia Zhang <wenjia@linux.ibm.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Dongliang Mu authored
The commit c5521189 ("dpaa2-eth: support PTP Sync packet one-step timestamping") forgets to destroy workqueue at the end of remove function. Fix this by adding destroy_workqueue before fsl_mc_portal_free and free_netdev. Fixes: c5521189 ("dpaa2-eth: support PTP Sync packet one-step timestamping") Signed-off-by:
Dongliang Mu <mudongliangabcd@gmail.com> Signed-off-by:
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Maciej Fijalkowski authored
Fix a bug in which the receiving of packets can stop in the zero-copy driver. Ice HW ignores 3 lower bits from QRX_TAIL register, which means that tail is bumped only on intervals of 8. Currently with XSK RX batching in place, ice_alloc_rx_bufs_zc() clears the status_error0 only of the last descriptor that has been allocated/taken from the XSK buffer pool. status_error0 includes DD bit that is looked upon by the ice_clean_rx_irq_zc() to tell if a descriptor can be processed. The bug can be triggered when driver updates the ntu but not the QRX_TAIL, so HW wouldn't have a chance to write to the ready descriptors. Later on driver moves the ntc to the mentioned set of descriptors and interprets them as a ready to be processed, since corresponding DD bits were not cleared nor any writeback has happened that would clear it. This can then lead to ntc == ntu case which means that ring is empty and no further packet processing. Fix the XSK traffic hang that can be observed when l2fwd scenario from xdpsock is used by making sure that status_error0 is cleared for each descriptor that is fed to HW and therefore we are sure that driver will not processed non-valid DD bits. This will also prevent the driver from processing the descriptors that were allocated in favor of the previously processed ones, but writeback didn't happen yet. Fixes: db804cfc ("ice: Use the xsk batched rx allocation interface") Signed-off-by:
Maciej Fijalkowski <maciej.fijalkowski@intel.com> Reviewed-by:
Alexander Lobakin <alexandr.lobakin@intel.com> Signed-off-by:
Tony Nguyen <anthony.l.nguyen@intel.com> Signed-off-by:
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Christophe JAILLET authored
'bitmap_fill()' fills a bitmap one 'long' at a time. It is likely that an exact number of bits is expected. Use 'bitmap_set()' instead in order not to set unexpected bits. Fixes: e531f767 ("net: mvpp2: handle cases where more CPUs are available than s/w threads") Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by:
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Wei Yongjun authored
Add the missing mutex_unlock before return from function ocelot_hwstamp_set() in the ocelot_setup_ptp_traps() error handling case. Fixes: 96ca08c0 ("net: mscc: ocelot: set up traps for PTP packets") Reported-by:
Hulk Robot <hulkci@huawei.com> Signed-off-by:
Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by:
Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://lore.kernel.org/r/20211129151652.1165433-1-weiyongjun1@huawei.comSigned-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fsJakub Kicinski authored
David Howells says: ==================== rxrpc: Leak fixes Here are a couple of fixes for leaks in AF_RXRPC: (1) Fix a leak of rxrpc_peer structs in rxrpc_look_up_bundle(). (2) Fix a leak of rxrpc_local structs in rxrpc_lookup_peer(). * tag 'rxrpc-fixes-20211129' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs: rxrpc: Fix rxrpc_local leak in rxrpc_lookup_peer() rxrpc: Fix rxrpc_peer leak in rxrpc_look_up_bundle() ==================== Link: https://lore.kernel.org/r/163820097905.226370.17234085194655347888.stgit@warthog.procyon.org.ukSigned-off-by:
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Jakub Kicinski authored
Jason A. Donenfeld says: ==================== wireguard/siphash patches for 5.16-rc Here's quite a largeish set of stable patches I've had queued up and testing for a number of months now: - Patch (1) squelches a sparse warning by fixing an annotation. - Patches (2), (3), and (5) are minor improvements and fixes to the test suite. - Patch (4) is part of a tree-wide cleanup to have module-specific init and exit functions. - Patch (6) fixes a an issue with dangling dst references, by having a function to release references immediately rather than deferring, and adds an associated test case to prevent this from regressing. - Patches (7) and (8) help mitigate somewhat a potential DoS on the ingress path due to the use of skb_list's locking hitting contention on multiple cores by switching to using a ring buffer and dropping packets on contention rather than locking up another core spinning. - Patch (9) switches kvzalloc to kvcalloc for better form. - Patch (10) fixes alignment traps in siphash with clang-13 (and maybe other compilers) on armv6, by switching to using the unaligned functions by default instead of the aligned functions by default. ==================== Link: https://lore.kernel.org/r/20211129153929.3457-1-Jason@zx2c4.comSigned-off-by: -
Arnd Bergmann authored
On ARM v6 and later, we define CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS because the ordinary load/store instructions (ldr, ldrh, ldrb) can tolerate any misalignment of the memory address. However, load/store double and load/store multiple instructions (ldrd, ldm) may still only be used on memory addresses that are 32-bit aligned, and so we have to use the CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS macro with care, or we may end up with a severe performance hit due to alignment traps that require fixups by the kernel. Testing shows that this currently happens with clang-13 but not gcc-11. In theory, any compiler version can produce this bug or other problems, as we are dealing with undefined behavior in C99 even on architectures that support this in hardware, see also https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100363. Fortunately, the get_unaligned() accessors do the right thing: when building for ARMv6 or later, the compiler will emit unaligned accesses using the ordinary load/store instructions (but avoid the ones that require 32-bit alignment). When building for older ARM, those accessors will emit the appropriate sequence of ldrb/mov/orr instructions. And on architectures that can truly tolerate any kind of misalignment, the get_unaligned() accessors resolve to the leXX_to_cpup accessors that operate on aligned addresses. Since the compiler will in fact emit ldrd or ldm instructions when building this code for ARM v6 or later, the solution is to use the unaligned accessors unconditionally on architectures where this is known to be fast. The _aligned version of the hash function is however still needed to get the best performance on architectures that cannot do any unaligned access in hardware. This new version avoids the undefined behavior and should produce the fastest hash on all architectures we support. Link: https://lore.kernel.org/linux-arm-kernel/20181008211554.5355-4-ard.biesheuvel@linaro.org/ Link: https://lore.kernel.org/linux-crypto/CAK8P3a2KfmmGDbVHULWevB0hv71P2oi2ZCHEAqT=8dQfa0=cqQ@mail.gmail.com/Reported-by:
Ard Biesheuvel <ard.biesheuvel@linaro.org> Fixes: 2c956a60 ("siphash: add cryptographically secure PRF") Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Reviewed-by:
Jason A. Donenfeld <Jason@zx2c4.com> Acked-by:
Ard Biesheuvel <ardb@kernel.org> Signed-off-by:
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Gustavo A. R. Silva authored
Use 2-factor argument form kvcalloc() instead of kvzalloc(). Link: https://github.com/KSPP/linux/issues/162 Fixes: e7096c13 ("net: WireGuard secure network tunnel") Signed-off-by:
Gustavo A. R. Silva <gustavoars@kernel.org> [Jason: Gustavo's link above is for KSPP, but this isn't actually a security fix, as table_size is bounded to 8192 anyway, and gcc realizes this, so the codegen comes out to be about the same.] Signed-off-by:
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Jason A. Donenfeld authored
If we're being delivered packets from multiple CPUs so quickly that the ring lock is contended for CPU tries, then it's safe to assume that the queue is near capacity anyway, so just drop the packet rather than spinning. This helps deal with multicore DoS that can interfere with data path performance. It _still_ does not completely fix the issue, but it again chips away at it. Reported-by:
Streun Fabio <fstreun@student.ethz.ch> Fixes: e7096c13 ("net: WireGuard secure network tunnel") Signed-off-by:
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Jason A. Donenfeld authored
Apparently the spinlock on incoming_handshake's skb_queue is highly contended, and a torrent of handshake or cookie packets can bring the data plane to its knees, simply by virtue of enqueueing the handshake packets to be processed asynchronously. So, we try switching this to a ring buffer to hopefully have less lock contention. This alleviates the problem somewhat, though it still isn't perfect, so future patches will have to improve this further. However, it at least doesn't completely diminish the data plane. Reported-by:
Joel Wanner <joel.wanner@inf.ethz.ch> Fixes: e7096c13 ("net: WireGuard secure network tunnel") Signed-off-by:
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Jason A. Donenfeld authored
Each peer's endpoint contains a dst_cache entry that takes a reference to another netdev. When the containing namespace exits, we take down the socket and prevent future sockets from being created (by setting creating_net to NULL), which removes that potential reference on the netns. However, it doesn't release references to the netns that a netdev cached in dst_cache might be taking, so the netns still might fail to exit. Since the socket is gimped anyway, we can simply clear all the dst_caches (by way of clearing the endpoint src), which will release all references. However, the current dst_cache_reset function only releases those references lazily. But it turns out that all of our usages of wg_socket_clear_peer_endpoint_src are called from contexts that are not exactly high-speed or bottle-necked. For example, when there's connection difficulty, or when userspace is reconfiguring the interface. And in particular for this patch, when the netns is exiting. So for those cases, it makes more sense to call dst_release immediately. For that, we add a small helper function to dst_cache. This patch also adds a test to netns.sh from Hangbin Liu to ensure this doesn't regress. Tested-by:
Hangbin Liu <liuhangbin@gmail.com> Reported-by:
Xiumei Mu <xmu@redhat.com> Cc: Toke Høiland-Jørgensen <toke@redhat.com> Cc: Paolo Abeni <pabeni@redhat.com> Fixes: 900575aa ("wireguard: device: avoid circular netns references") Signed-off-by:
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Li Zhijian authored
DEBUG_PI_LIST was renamed to DEBUG_PLIST since 8e18faea ("lib/plist: rename DEBUG_PI_LIST to DEBUG_PLIST"). Signed-off-by:
Li Zhijian <lizhijian@cn.fujitsu.com> Fixes: 8e18faea ("lib/plist: rename DEBUG_PI_LIST to DEBUG_PLIST") Signed-off-by:
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Randy Dunlap authored
Rename module_init & module_exit functions that are named "mod_init" and "mod_exit" so that they are unique in both the System.map file and in initcall_debug output instead of showing up as almost anonymous "mod_init". This is helpful for debugging and in determining how long certain module_init calls take to execute. Signed-off-by:
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Jason A. Donenfeld authored
We previously removed the restriction on looping to self, and then added a test to make sure the kernel didn't blow up during a routing loop. The kernel didn't blow up, thankfully, but on certain architectures where skb fragmentation is easier, such as ppc64, the skbs weren't actually being discarded after a few rounds through. But the test wasn't catching this. So actually test explicitly for massive increases in tx to see if we have a routing loop. Note that the actual loop problem will need to be addressed in a different commit. Fixes: b673e24a ("wireguard: socket: remove errant restriction on looping to self") Signed-off-by:
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Jason A. Donenfeld authored
The selftests currently parse the kernel log at the end to track potential memory leaks. With these tests now reading off the end of the buffer, due to recent optimizations, some creation messages were lost, making the tests think that there was a free without an alloc. Fix this by increasing the kernel log size. Fixes: 24b70eee ("wireguard: use synchronize_net rather than synchronize_rcu") Signed-off-by:
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Jason A. Donenfeld authored
A __rcu annotation got lost during refactoring, which caused sparse to become enraged. Fixes: bf7b042d ("wireguard: allowedips: free empty intermediate nodes when removing single node") Signed-off-by:
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- 29 Nov, 2021 18 commits
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Eiichi Tsukata authored
Need to call rxrpc_put_local() for peer candidate before kfree() as it holds a ref to rxrpc_local. [DH: v2: Changed to abstract the peer freeing code out into a function] Fixes: 9ebeddef ("rxrpc: rxrpc_peer needs to hold a ref on the rxrpc_local record") Signed-off-by:
Eiichi Tsukata <eiichi.tsukata@nutanix.com> Signed-off-by:
David Howells <dhowells@redhat.com> Reviewed-by:
Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Link: https://lore.kernel.org/all/20211121041608.133740-2-eiichi.tsukata@nutanix.com/ # v1
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Eiichi Tsukata authored
Need to call rxrpc_put_peer() for bundle candidate before kfree() as it holds a ref to rxrpc_peer. [DH: v2: Changed to abstract out the bundle freeing code into a function] Fixes: 245500d8 ("rxrpc: Rewrite the client connection manager") Signed-off-by:
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msizanoen1 authored
The kernel leaks memory when a `fib` rule is present in IPv6 nftables firewall rules and a suppress_prefix rule is present in the IPv6 routing rules (used by certain tools such as wg-quick). In such scenarios, every incoming packet will leak an allocation in `ip6_dst_cache` slab cache. After some hours of `bpftrace`-ing and source code reading, I tracked down the issue to ca7a03c4 ("ipv6: do not free rt if FIB_LOOKUP_NOREF is set on suppress rule"). The problem with that change is that the generic `args->flags` always have `FIB_LOOKUP_NOREF` set[1][2] but the IPv6-specific flag `RT6_LOOKUP_F_DST_NOREF` might not be, leading to `fib6_rule_suppress` not decreasing the refcount when needed. How to reproduce: - Add the following nftables rule to a prerouting chain: meta nfproto ipv6 fib saddr . mark . iif oif missing drop This can be done with: sudo nft create table inet test sudo nft create chain inet test test_chain '{ type filter hook prerouting priority filter + 10; policy accept; }' sudo nft add rule inet test test_chain meta nfproto ipv6 fib saddr . mark . iif oif missing drop - Run: sudo ip -6 rule add table main suppress_prefixlength 0 - Watch `sudo slabtop -o | grep ip6_dst_cache` to see memory usage increase with every incoming ipv6 packet. This patch exposes the protocol-specific flags to the protocol specific `suppress` function, and check the protocol-specific `flags` argument for RT6_LOOKUP_F_DST_NOREF instead of the generic FIB_LOOKUP_NOREF when decreasing the refcount, like this. [1]: https://github.com/torvalds/linux/blob/ca7a03c4175366a92cee0ccc4fec0038c3266e26/net/ipv6/fib6_rules.c#L71 [2]: https://github.com/torvalds/linux/blob/ca7a03c4175366a92cee0ccc4fec0038c3266e26/net/ipv6/fib6_rules.c#L99 Link: https://bugzilla.kernel.org/show_bug.cgi?id=215105 Fixes: ca7a03c4 ("ipv6: do not free rt if FIB_LOOKUP_NOREF is set on suppress rule") Cc: stable@vger.kernel.org Signed-off-by:
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David S. Miller authored
Sudarsana Reddy Kalluru says: ==================== net: atlantic: 11-2021 fixes The patch series contains fixes for atlantic driver to improve support of latest AQC113 chipset. Please consider applying it to 'net' tree. ==================== Signed-off-by: -
Sameer Saurabh authored
Remove the warn trace message - it's not a correct check here, because the function can still be called on the device in DOWN state Fixes: 508f2e3d ("net: atlantic: split rx and tx per-queue stats") Signed-off-by:
Sameer Saurabh <ssaurabh@marvell.com> Signed-off-by:
Sudarsana Reddy Kalluru <skalluru@marvell.com> Signed-off-by:
Igor Russkikh <irusskikh@marvell.com> Signed-off-by:
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Dmitry Bogdanov authored
B0 is the main and widespread device revision of atlantic2 HW. In the current state, driver will incorrectly fetch the statistics for this revision. Fixes: 5cfd54d7 ("net: atlantic: minimal A2 fw_ops") Signed-off-by:
Dmitry Bogdanov <dbezrukov@marvell.com> Signed-off-by:
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Sameer Saurabh authored
Since Half Duplex mode has been deprecated by the firmware, driver should not advertise Half Duplex speed in ethtool support link speed values. Fixes: 071a0204 ("net: atlantic: A2: half duplex support") Signed-off-by:
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Nikita Danilov authored
At the late production stages new dev ids were introduced. These are now in production, so its important for the driver to recognize these. And also fix the board caps for AQC115C adapter. Fixes: b3f0c79c ("net: atlantic: A2 hw_ops skeleton") Signed-off-by:
Nikita Danilov <ndanilov@aquantia.com> Signed-off-by:
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Sameer Saurabh authored
The correct way to reflect firmware version is to use bundle version. Hence populating the same instead of MAC fw version. Fixes: c1be0bf0 ("net: atlantic: common functions needed for basic A2 init/deinit hw_ops") Signed-off-by:
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Nikita Danilov authored
When 2.5G is advertised, N-Base should be advertised against the T-base caps. N5G is out of use in baseline code and driver should treat both 5G and N5G (and also 2.5G and N2.5G) equally from user perspective. Fixes: 5cfd54d7 ("net: atlantic: minimal A2 fw_ops") Signed-off-by:
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Dmitry Bogdanov authored
The max waiting period (of 1 ms) while reading the data from FW shared buffer is too small for certain types of data (e.g., stats). There's a chance that FW could be updating buffer at the same time and driver would be unsuccessful in reading data. Firmware manual recommends to have 1 sec timeout to fix this issue. Fixes: 5cfd54d7 ("net: atlantic: minimal A2 fw_ops") Signed-off-by:
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Erik Ekman authored
When link modes were initially added in commit 2c762679 ("net/mlx4_en: Use PTYS register to query ethtool settings") and later updated for the new ethtool API in commit 3d8f7cc7 ("net: mlx4: use new ETHTOOL_G/SSETTINGS API") the only 1/10G non-baseT link modes configured were 1000baseKX, 10000baseKX4 and 10000baseKR. It looks like these got picked to represent other modes since nothing better was available. Switch to using more specific link modes added in commit 5711a982 ("net: ethtool: add support for 1000BaseX and missing 10G link modes"). Tested with MCX311A-XCAT connected via DAC. Before: % sudo ethtool enp3s0 Settings for enp3s0: Supported ports: [ FIBRE ] Supported link modes: 1000baseKX/Full 10000baseKR/Full Supported pause frame use: Symmetric Receive-only Supports auto-negotiation: No Supported FEC modes: Not reported Advertised link modes: 1000baseKX/Full 10000baseKR/Full Advertised pause frame use: Symmetric Advertised auto-negotiation: No Advertised FEC modes: Not reported Speed: 10000Mb/s Duplex: Full Auto-negotiation: off Port: Direct Attach Copper PHYAD: 0 Transceiver: internal Supports Wake-on: d Wake-on: d Current message level: 0x00000014 (20) link ifdown Link detected: yes With this change: % sudo ethtool enp3s0 Settings for enp3s0: Supported ports: [ FIBRE ] Supported link modes: 1000baseX/Full 10000baseCR/Full 10000baseSR/Full Supported pause frame use: Symmetric Receive-only Supports auto-negotiation: No Supported FEC modes: Not reported Advertised link modes: 1000baseX/Full 10000baseCR/Full 10000baseSR/Full Advertised pause frame use: Symmetric Advertised auto-negotiation: No Advertised FEC modes: Not reported Speed: 10000Mb/s Duplex: Full Auto-negotiation: off Port: Direct Attach Copper PHYAD: 0 Transceiver: internal Supports Wake-on: d Wake-on: d Current message level: 0x00000014 (20) link ifdown Link detected: yes Tested-by:
Michael Stapelberg <michael@stapelberg.ch> Signed-off-by:
Erik Ekman <erik@kryo.se> Reviewed-by:
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Jeremy Kerr authored
In our test device, we're currently freeing skbs in the transmit path with kfree(), rather than kfree_skb(). This change uses the correct kfree_skb() instead. Fixes: ded21b72 ("mctp: Add test utils") Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
Jeremy Kerr <jk@codeconstruct.com.au> Signed-off-by:
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Tianjia Zhang authored
When the TLS cipher suite uses CCM mode, including AES CCM and SM4 CCM, the first byte of the B0 block is flags, and the real IV starts from the second byte. The XOR operation of the IV and rec_seq should be skip this byte, that is, add the iv_offset. Fixes: f295b3ae ("net/tls: Add support of AES128-CCM based ciphers") Signed-off-by:
Tianjia Zhang <tianjia.zhang@linux.alibaba.com> Cc: Vakul Garg <vakul.garg@nxp.com> Cc: stable@vger.kernel.org # v5.2+ Signed-off-by:
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David S. Miller authored
Benjamin Poirier says: ==================== net: mpls: Netlink notification fixes fix missing or inaccurate route notifications when devices used in nexthops are deleted. ==================== Signed-off-by: -
Benjamin Poirier authored
Following the previous commit, nh_dev can no longer be accessed and modified concurrently. Signed-off-by:
Benjamin Poirier <bpoirier@nvidia.com> Signed-off-by:
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Benjamin Poirier authored
There are various problems related to netlink notifications for mpls route changes in response to interfaces being deleted: * delete interface of only nexthop DELROUTE notification is missing RTA_OIF attribute * delete interface of non-last nexthop NEWROUTE notification is missing entirely * delete interface of last nexthop DELROUTE notification is missing nexthop All of these problems stem from the fact that existing routes are modified in-place before sending a notification. Restructure mpls_ifdown() to avoid changing the route in the DELROUTE cases and to create a copy in the NEWROUTE case. Fixes: f8efb73c ("mpls: multipath route support") Signed-off-by:
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Sven Schuchmann authored
On most systems request for IRQ 0 will fail, phylib will print an error message and fall back to polling. To fix this set the phydev->irq to PHY_POLL if no IRQ is available. Fixes: cc89c323 ("lan78xx: Use irq_domain for phy interrupt from USB Int. EP") Reviewed-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
Sven Schuchmann <schuchmann@schleissheimer.de> Signed-off-by:
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