- 05 8月, 2017 5 次提交
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由 Daniel Borkmann 提交于
The BPF feature test as well as libbpf is missing the __NR_bpf define for s390 and currently refuses to compile (selftest suite depends on libbpf as well). Similar issue was fixed some time ago via b0c47807 ("bpf: Add sparc support to tools and samples."), just do the same and add definitions. Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Daniel Borkmann 提交于
While testing some other work that required JIT modifications, I run into test_bpf causing a hang when JIT enabled on s390. The problematic test case was the one from ddc665a4 (bpf, arm64: fix jit branch offset related to ldimm64), and turns out that we do have a similar issue on s390 as well. In bpf_jit_prog() we update next instruction address after returning from bpf_jit_insn() with an insn_count. bpf_jit_insn() returns either -1 in case of error (e.g. unsupported insn), 1 or 2. The latter is only the case for ldimm64 due to spanning 2 insns, however, next address is only set to i + 1 not taking actual insn_count into account, thus fix is to use insn_count instead of 1. bpf_jit_enable in mode 2 provides also disasm on s390: Before fix: 000003ff800349b6: a7f40003 brc 15,3ff800349bc ; target 000003ff800349ba: 0000 unknown 000003ff800349bc: e3b0f0700024 stg %r11,112(%r15) 000003ff800349c2: e3e0f0880024 stg %r14,136(%r15) 000003ff800349c8: 0db0 basr %r11,%r0 000003ff800349ca: c0ef00000000 llilf %r14,0 000003ff800349d0: e320b0360004 lg %r2,54(%r11) 000003ff800349d6: e330b03e0004 lg %r3,62(%r11) 000003ff800349dc: ec23ffeda065 clgrj %r2,%r3,10,3ff800349b6 ; jmp 000003ff800349e2: e3e0b0460004 lg %r14,70(%r11) 000003ff800349e8: e3e0b04e0004 lg %r14,78(%r11) 000003ff800349ee: b904002e lgr %r2,%r14 000003ff800349f2: e3b0f0700004 lg %r11,112(%r15) 000003ff800349f8: e3e0f0880004 lg %r14,136(%r15) 000003ff800349fe: 07fe bcr 15,%r14 After fix: 000003ff80ef3db4: a7f40003 brc 15,3ff80ef3dba 000003ff80ef3db8: 0000 unknown 000003ff80ef3dba: e3b0f0700024 stg %r11,112(%r15) 000003ff80ef3dc0: e3e0f0880024 stg %r14,136(%r15) 000003ff80ef3dc6: 0db0 basr %r11,%r0 000003ff80ef3dc8: c0ef00000000 llilf %r14,0 000003ff80ef3dce: e320b0360004 lg %r2,54(%r11) 000003ff80ef3dd4: e330b03e0004 lg %r3,62(%r11) 000003ff80ef3dda: ec230006a065 clgrj %r2,%r3,10,3ff80ef3de6 ; jmp 000003ff80ef3de0: e3e0b0460004 lg %r14,70(%r11) 000003ff80ef3de6: e3e0b04e0004 lg %r14,78(%r11) ; target 000003ff80ef3dec: b904002e lgr %r2,%r14 000003ff80ef3df0: e3b0f0700004 lg %r11,112(%r15) 000003ff80ef3df6: e3e0f0880004 lg %r14,136(%r15) 000003ff80ef3dfc: 07fe bcr 15,%r14 test_bpf.ko suite runs fine after the fix. Fixes: 05462310 ("s390/bpf: Add s390x eBPF JIT compiler backend") Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net> Tested-by: NMichael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Jiri Pirko says: ==================== mlxsw: Couple of fixes Ido says: The first patch prevents us from warning about valid situations that can happen due to the fact that some operations in switchdev are deferred. Second patch fixes a long standing problem in which we didn't correctly free resources upon module removal, resulting in a memory leak. ==================== Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ido Schimmel 提交于
Each multicast group (MID) stores a bitmap of ports to which a packet should be forwarded to in case an MDB entry associated with the MID is hit. Since the initial introduction of IGMP snooping in commit 3a49b4fd ("mlxsw: Adding layer 2 multicast support") the driver didn't correctly free these multicast groups upon ungraceful situations such as the removal of the upper bridge device or module removal. The correct way to fix this is to associate each MID with the bridge ports member in it and then drop the reference in case the bridge port is destroyed, but this will result in a lot more code and will be fixed in net-next. For now, upon module removal, traverse the MID list and release each one. Fixes: 3a49b4fd ("mlxsw: Adding layer 2 multicast support") Signed-off-by: NIdo Schimmel <idosch@mellanox.com> Signed-off-by: NJiri Pirko <jiri@mellanox.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ido Schimmel 提交于
Some operations in the bridge driver such as MDB deletion are preformed in an atomic context and thus deferred to a process context by the switchdev infrastructure. Therefore, by the time the operation is performed by the underlying device driver it's possible the bridge port context is already gone. This is especially true for removal flows, but theoretically can also be invoked during addition. Remove the warnings in such situations and return normally. Fixes: c57529e1 ("mlxsw: spectrum: Replace vPorts with Port-VLAN") Fixes: 3922285d ("net: bridge: Add support for offloading port attributes") Signed-off-by: NIdo Schimmel <idosch@mellanox.com> Signed-off-by: NJiri Pirko <jiri@mellanox.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 04 8月, 2017 7 次提交
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由 David S. Miller 提交于
Neal Cardwell says: ==================== tcp: fix xmit timer rearming to avoid stalls This patch series is a bug fix for a TCP loss recovery performance bug reported independently in recent netdev threads: (i) July 26, 2017: netdev thread "TCP fast retransmit issues" (ii) July 26, 2017: netdev thread: "[PATCH V2 net-next] TLP: Don't reschedule PTO when there's one outstanding TLP retransmission" Many thanks to Klavs Klavsen and Mao Wenan for the detailed reports, traces, and packetdrill test cases, which enabled us to root-cause this issue and verify the fix. - v1 -> v2: - In patch 2/3, changed an unclear comment in the pre-existing code in tcp_schedule_loss_probe() to be more clear (thanks to Eric Dumazet for suggesting we improve this). ==================== Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Neal Cardwell 提交于
Fix a TCP loss recovery performance bug raised recently on the netdev list, in two threads: (i) July 26, 2017: netdev thread "TCP fast retransmit issues" (ii) July 26, 2017: netdev thread: "[PATCH V2 net-next] TLP: Don't reschedule PTO when there's one outstanding TLP retransmission" The basic problem is that incoming TCP packets that did not indicate forward progress could cause the xmit timer (TLP or RTO) to be rearmed and pushed back in time. In certain corner cases this could result in the following problems noted in these threads: - Repeated ACKs coming in with bogus SACKs corrupted by middleboxes could cause TCP to repeatedly schedule TLPs forever. We kept sending TLPs after every ~200ms, which elicited bogus SACKs, which caused more TLPs, ad infinitum; we never fired an RTO to fill in the holes. - Incoming data segments could, in some cases, cause us to reschedule our RTO or TLP timer further out in time, for no good reason. This could cause repeated inbound data to result in stalls in outbound data, in the presence of packet loss. This commit fixes these bugs by changing the TLP and RTO ACK processing to: (a) Only reschedule the xmit timer once per ACK. (b) Only reschedule the xmit timer if tcp_clean_rtx_queue() deems the ACK indicates sufficient forward progress (a packet was cumulatively ACKed, or we got a SACK for a packet that was sent before the most recent retransmit of the write queue head). This brings us back into closer compliance with the RFCs, since, as the comment for tcp_rearm_rto() notes, we should only restart the RTO timer after forward progress on the connection. Previously we were restarting the xmit timer even in these cases where there was no forward progress. As a side benefit, this commit simplifies and speeds up the TCP timer arming logic. We had been calling inet_csk_reset_xmit_timer() three times on normal ACKs that cumulatively acknowledged some data: 1) Once near the top of tcp_ack() to switch from TLP timer to RTO: if (icsk->icsk_pending == ICSK_TIME_LOSS_PROBE) tcp_rearm_rto(sk); 2) Once in tcp_clean_rtx_queue(), to update the RTO: if (flag & FLAG_ACKED) { tcp_rearm_rto(sk); 3) Once in tcp_ack() after tcp_fastretrans_alert() to switch from RTO to TLP: if (icsk->icsk_pending == ICSK_TIME_RETRANS) tcp_schedule_loss_probe(sk); This commit, by only rescheduling the xmit timer once per ACK, simplifies the code and reduces CPU overhead. This commit was tested in an A/B test with Google web server traffic. SNMP stats and request latency metrics were within noise levels, substantiating that for normal web traffic patterns this is a rare issue. This commit was also tested with packetdrill tests to verify that it fixes the timer behavior in the corner cases discussed in the netdev threads mentioned above. This patch is a bug fix patch intended to be queued for -stable relases. Fixes: 6ba8a3b1 ("tcp: Tail loss probe (TLP)") Reported-by: NKlavs Klavsen <kl@vsen.dk> Reported-by: NMao Wenan <maowenan@huawei.com> Signed-off-by: NNeal Cardwell <ncardwell@google.com> Signed-off-by: NYuchung Cheng <ycheng@google.com> Signed-off-by: NNandita Dukkipati <nanditad@google.com> Acked-by: NEric Dumazet <edumazet@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Neal Cardwell 提交于
Have tcp_schedule_loss_probe() base the TLP scheduling decision based on when the RTO *should* fire. This is to enable the upcoming xmit timer fix in this series, where tcp_schedule_loss_probe() cannot assume that the last timer installed was an RTO timer (because we are no longer doing the "rearm RTO, rearm RTO, rearm TLP" dance on every ACK). So tcp_schedule_loss_probe() must independently figure out when an RTO would want to fire. In the new TLP implementation following in this series, we cannot assume that icsk_timeout was set based on an RTO; after processing a cumulative ACK the icsk_timeout we see can be from a previous TLP or RTO. So we need to independently recalculate the RTO time (instead of reading it out of icsk_timeout). Removing this dependency on the nature of icsk_timeout makes things a little easier to reason about anyway. Note that the old and new code should be equivalent, since they are both saying: "if the RTO is in the future, but at an earlier time than the normal TLP time, then set the TLP timer to fire when the RTO would have fired". Fixes: 6ba8a3b1 ("tcp: Tail loss probe (TLP)") Signed-off-by: NNeal Cardwell <ncardwell@google.com> Signed-off-by: NYuchung Cheng <ycheng@google.com> Signed-off-by: NNandita Dukkipati <nanditad@google.com> Acked-by: NEric Dumazet <edumazet@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Neal Cardwell 提交于
Pure refactor. This helper will be required in the xmit timer fix later in the patch series. (Because the TLP logic will want to make this calculation.) Fixes: 6ba8a3b1 ("tcp: Tail loss probe (TLP)") Signed-off-by: NNeal Cardwell <ncardwell@google.com> Signed-off-by: NYuchung Cheng <ycheng@google.com> Signed-off-by: NNandita Dukkipati <nanditad@google.com> Acked-by: NEric Dumazet <edumazet@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Xin Long 提交于
After commit c2ed1880 ("net: ipv6: check route protocol when deleting routes"), ipv6 route checks rt protocol when trying to remove a rt entry. It introduced a side effect causing 'ip -6 route flush cache' not to work well. When flushing caches with iproute, all route caches get dumped from kernel then removed one by one by sending DELROUTE requests to kernel for each cache. The thing is iproute sends the request with the cache whose proto is set with RTPROT_REDIRECT by rt6_fill_node() when kernel dumps it. But in kernel the rt_cache protocol is still 0, which causes the cache not to be matched and removed. So the real reason is rt6i_protocol in the route is not set when it is allocated. As David Ahern's suggestion, this patch is to set rt6i_protocol properly in the route when it is installed and remove the codes setting rtm_protocol according to rt6i_flags in rt6_fill_node. This is also an improvement to keep rt6i_protocol consistent with rtm_protocol. Fixes: c2ed1880 ("net: ipv6: check route protocol when deleting routes") Reported-by: NJianlin Shi <jishi@redhat.com> Suggested-by: NDavid Ahern <dsahern@gmail.com> Signed-off-by: NXin Long <lucien.xin@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Eric Dumazet 提交于
syzkaller was able to trigger a divide by 0 in TCP stack [1] Issue here is that keepalive timer needs to be updated to not attempt to send a probe if the connection setup was deferred using TCP_FASTOPEN_CONNECT socket option added in linux-4.11 [1] divide error: 0000 [#1] SMP CPU: 18 PID: 0 Comm: swapper/18 Not tainted task: ffff986f62f4b040 ti: ffff986f62fa2000 task.ti: ffff986f62fa2000 RIP: 0010:[<ffffffff8409cc0d>] [<ffffffff8409cc0d>] __tcp_select_window+0x8d/0x160 Call Trace: <IRQ> [<ffffffff8409d951>] tcp_transmit_skb+0x11/0x20 [<ffffffff8409da21>] tcp_xmit_probe_skb+0xc1/0xe0 [<ffffffff840a0ee8>] tcp_write_wakeup+0x68/0x160 [<ffffffff840a151b>] tcp_keepalive_timer+0x17b/0x230 [<ffffffff83b3f799>] call_timer_fn+0x39/0xf0 [<ffffffff83b40797>] run_timer_softirq+0x1d7/0x280 [<ffffffff83a04ddb>] __do_softirq+0xcb/0x257 [<ffffffff83ae03ac>] irq_exit+0x9c/0xb0 [<ffffffff83a04c1a>] smp_apic_timer_interrupt+0x6a/0x80 [<ffffffff83a03eaf>] apic_timer_interrupt+0x7f/0x90 <EOI> [<ffffffff83fed2ea>] ? cpuidle_enter_state+0x13a/0x3b0 [<ffffffff83fed2cd>] ? cpuidle_enter_state+0x11d/0x3b0 Tested: Following packetdrill no longer crashes the kernel `echo 0 >/proc/sys/net/ipv4/tcp_timestamps` // Cache warmup: send a Fast Open cookie request 0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3 +0 fcntl(3, F_SETFL, O_RDWR|O_NONBLOCK) = 0 +0 setsockopt(3, SOL_TCP, TCP_FASTOPEN_CONNECT, [1], 4) = 0 +0 connect(3, ..., ...) = -1 EINPROGRESS (Operation is now in progress) +0 > S 0:0(0) <mss 1460,nop,nop,sackOK,nop,wscale 8,FO,nop,nop> +.01 < S. 123:123(0) ack 1 win 14600 <mss 1460,nop,nop,sackOK,nop,wscale 6,FO abcd1234,nop,nop> +0 > . 1:1(0) ack 1 +0 close(3) = 0 +0 > F. 1:1(0) ack 1 +0 < F. 1:1(0) ack 2 win 92 +0 > . 2:2(0) ack 2 +0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 4 +0 fcntl(4, F_SETFL, O_RDWR|O_NONBLOCK) = 0 +0 setsockopt(4, SOL_TCP, TCP_FASTOPEN_CONNECT, [1], 4) = 0 +0 setsockopt(4, SOL_SOCKET, SO_KEEPALIVE, [1], 4) = 0 +.01 connect(4, ..., ...) = 0 +0 setsockopt(4, SOL_TCP, TCP_KEEPIDLE, [5], 4) = 0 +10 close(4) = 0 `echo 1 >/proc/sys/net/ipv4/tcp_timestamps` Fixes: 19f6d3f3 ("net/tcp-fastopen: Add new API support") Signed-off-by: NEric Dumazet <edumazet@google.com> Reported-by: NDmitry Vyukov <dvyukov@google.com> Cc: Wei Wang <weiwan@google.com> Cc: Yuchung Cheng <ycheng@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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git://git.open-mesh.org/linux-merge由 David S. Miller 提交于
Simon Wunderlich says: ==================== Here is a batman-adv bugfix: - fix TT sync flag inconsistency problems, which can lead to excess packets, by Linus Luessing ==================== Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 03 8月, 2017 11 次提交
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由 Yuchung Cheng 提交于
If the sender switches the congestion control during ECN-triggered cwnd-reduction state (CA_CWR), upon exiting recovery cwnd is set to the ssthresh value calculated by the previous congestion control. If the previous congestion control is BBR that always keep ssthresh to TCP_INIFINITE_SSTHRESH, cwnd ends up being infinite. The safe step is to avoid assigning invalid ssthresh value when recovery ends. Signed-off-by: NYuchung Cheng <ycheng@google.com> Signed-off-by: NNeal Cardwell <ncardwell@google.com> Acked-by: NEric Dumazet <edumazet@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Thomas Falcon 提交于
SCRQ resources are freed during renegotiation, but they are not re-allocated afterwards due to some changes in the initialization process. Fix that by re-allocating the memory after renegotation. SCRQ's can also be freed if a server capabilities request fails. If this were encountered during a device reset for example, SCRQ's may not be re-allocated. This operation is not necessary anymore so remove it. Signed-off-by: NThomas Falcon <tlfalcon@linux.vnet.ibm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Hector Martin 提交于
Signed-off-by: NHector Martin <marcan@marcan.st> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Tariq Toukan says: ==================== mlx4 misc fixes This patchset contains misc bug fixes from the team to the mlx4 Core and Eth drivers. Patch 1 by Inbar fixes a wrong ethtool indication for Wake-on-LAN. The other 3 patches by Jack add a missing capability description, and fixes the off-by-1 misalignment for the following capabilities descriptions. Series generated against net commit: cc75f851 samples/bpf: fix bpf tunnel cleanup ==================== Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Jack Morgenstein 提交于
The cited commit introduced the following new enum value in file include/linux/mlx4/device.h: QUERY_DEV_CAP_DIAG_RPRT_PER_PORT However, it failed to introduce a corresponding entry in function dump_dev_cap_flags2() for outputting a line in the message log when this capability bit is set. The change here fixes that omission. Fixes: c7c122ed ("net/mlx4: Add diagnostic counters capability bit") Reported-by: NMukesh Kacker <mukesh.kacker@oracle.com> Signed-off-by: NJack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: NTariq Toukan <tariqt@mellanox.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Jack Morgenstein 提交于
The cited commit introduced the following new enum value in file include/linux/mlx4/device.h: MLX4_DEV_CAP_FLAG2_SVLAN_BY_QP However the value of MLX4_DEV_CAP_FLAG2_SVLAN_BY_QP needs to stay consistent with the value used in another namespace in function dump_dev_cap_flags2(), which is manually kept in sync. The change here restores that consistency. Fixes: 7c3d21c8 ("net/mlx4_core: Preparation for VF vlan protocol 802.1ad") Reported-by: NMukesh Kacker <mukesh.kacker@oracle.com> Signed-off-by: NJack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: NTariq Toukan <tariqt@mellanox.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Jack Morgenstein 提交于
The index value in function dump_dev_cap_flags2() for outputting "sl to vl mapping table change event support" needs to be consistent with the value of the enumerated constant MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT defined in file include/linux/mlx4_device.h The change here restores that consistency. Fixes: fd10ed8e ("IB/mlx4: Fix possible vl/sl field mismatch in LRH header in QP1 packets") Reported-by: NMukesh Kacker <mukesh.kacker@oracle.com> Signed-off-by: NJack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: NTariq Toukan <tariqt@mellanox.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Inbar Karmy 提交于
Currently when WoL is supported but disabled, ethtool reports: "Supports Wake-on: d". Fix the indication of Wol support, so that the indication remains "g" all the time if the NIC supports WoL. Tested: As accepted, when NIC supports WoL- ethtool reports: Supports Wake-on: g Wake-on: d when NIC doesn't support WoL- ethtool reports: Supports Wake-on: d Wake-on: d Fixes: 14c07b13 ("mlx4: Wake on LAN support") Signed-off-by: NInbar Karmy <inbark@mellanox.com> Signed-off-by: NTariq Toukan <tariqt@mellanox.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Nisar Sayed says: ==================== lan78xx: Fixes to lan78xx driver This series of patches are for lan78xx driver. These patches fixes potential issues associated with lan78xx driver ==================== Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Nisar Sayed 提交于
Fix to handle hard_header_len update When ifconfig up/down sequence is initiated hard_header_len get updated incrementally for each ifconfig up /down sequence, this leads invalid hard_header_len, moving to lan78xx_bind to have one time update of hard_header_len addresses the issue. Signed-off-by: NNisar Sayed <Nisar.Sayed@microchip.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Nisar Sayed 提交于
USB fast connect/disconnect crash fix When USB plugged/unplugged at fast rate, lan78xx_mdio_init() in lan78xx_bind() failing case is not handled. Whenever lan78xx_mdio_init() failed, dev->mdiobus will be freed, however since lan78xx_bind() not consider as error and try to proceed for further initialization in lan78xx_probe() which leads system hung/crash. Also when register_netdev() failed, netdev is freed without calling lan78xx_unbind(). Hence halting the failed cases right manner fixes the system crash/hung issue. Signed-off-by: NNisar Sayed <Nisar.Sayed@microchip.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 02 8月, 2017 16 次提交
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由 David S. Miller 提交于
Florian Fainelli says: ==================== drivers: net: Fix 64-bit statistics seqcount init This patch series fixes a bunch of drivers to have their 64-bit statistics seqcount cookie be initialized correctly. Most of these drivers (except b44, gtp) are probably used on 64-bit only hosts and so the lockdep splat might have never been seen. ==================== Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Florian Fainelli 提交于
On 32-bit hosts and with CONFIG_DEBUG_LOCK_ALLOC we should be seeing a lockdep splat indicating this seqcount is not correctly initialized, fix that by using the proper helper function: netdev_alloc_pcpu_stats(). Fixes: 2ad7bf36 ("ipvlan: Initial check-in of the IPVLAN driver.") Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Florian Fainelli 提交于
On 32-bit hosts and with CONFIG_DEBUG_LOCK_ALLOC we should be seeing a lockdep splat indicating this seqcount is not correctly initialized, fix that. In commit 6c80f3fc ("netvsc: report per-channel stats in ethtool statistics") netdev_alloc_pcpu_stats() was removed in favor of open-coding the 64-bits statistics, except that u64_stats_init() was missed. Fixes: 6c80f3fc ("netvsc: report per-channel stats in ethtool statistics") Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com> Signed-off-by: NStephen Hemminger <sthemmin@microsoft.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Florian Fainelli 提交于
On 32-bit hosts and with CONFIG_DEBUG_LOCK_ALLOC we should be seeing a lockdep splat indicating this seqcount is not correctly initialized, fix that by using netdev_alloc_pcpu_stats() instead of an open coded allocation. Fixes: 459aa660 ("gtp: add initial driver for datapath of GPRS Tunneling Protocol (GTP-U)") Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Florian Fainelli 提交于
On 32-bit hosts and with CONFIG_DEBUG_LOCK_ALLOC we should be seeing a lockdep splat indicating this seqcount is not correctly initialized, fix that. Fixes: 4c352362 ("net: add driver for Netronome NFP4000/NFP6000 NIC VFs") Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com> Reviewed-by: NSimon Horman <simon.horman@netronome.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Florian Fainelli 提交于
On 32-bit hosts and with CONFIG_DEBUG_LOCK_ALLOC we should be seeing a lockdep splat indicating this seqcount is not correctly initialized, fix that. Fixes: 4197aa7b ("ixgbevf: provide 64 bit statistics") Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Florian Fainelli 提交于
On 32-bit hosts and with CONFIG_DEBUG_LOCK_ALLOC we should be seeing a lockdep splat indicating this seqcount is not correctly initialized, fix that. Fixes: 980e9b11 ("i40e: Add support for 64 bit netstats") Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Florian Fainelli 提交于
On 32-bit hosts and with CONFIG_DEBUG_LOCK_ALLOC we should be seeing a lockdep splat indicating this seqcount is not correctly initialized, fix that. Fixes: eeda8585 ("b44: add 64 bit stats") Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com> Acked-by: NMichael Chan <michael.chan@broadcom.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 K. Den 提交于
In the case that GRO is turned on and the original received packet is CHECKSUM_PARTIAL, if the outer UDP header is exactly at the last csum-unnecessary point, which for instance could occur if the packet comes from another Linux guest on the same Linux host, we have to do either remcsum_adjust or set up CHECKSUM_PARTIAL again with its csum_start properly reset considering RCO. However, since b7fe10e5 ("gro: Fix remcsum offload to deal with frags in GRO") that barrier in such case could be skipped if GRO turned on, hence we pass over it and the inner L4 validation mistakenly reckons it as a bad csum. This patch makes remcsum_offload being reset at the same time of GRO remcsum cleanup, so as to make it work in such case as before. Fixes: b7fe10e5 ("gro: Fix remcsum offload to deal with frags in GRO") Signed-off-by: NKoichiro Den <den@klaipeden.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 K. Den 提交于
In the case that GRO is turned on and the original received packet is CHECKSUM_PARTIAL, if the outer UDP header is exactly at the last csum-unnecessary point, which for instance could occur if the packet comes from another Linux guest on the same Linux host, we have to do either remcsum_adjust or set up CHECKSUM_PARTIAL again with its csum_start properly reset considering RCO. However, since b7fe10e5("gro: Fix remcsum offload to deal with frags in GRO") that barrier in such case could be skipped if GRO turned on, hence we pass over it and the inner L4 validation mistakenly reckons it as a bad csum. This patch makes remcsum_offload being reset at the same time of GRO remcsum cleanup, so as to make it work in such case as before. Fixes: b7fe10e5 ("gro: Fix remcsum offload to deal with frags in GRO") Signed-off-by: NKoichiro Den <den@klaipeden.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 yujuan.qi 提交于
in for(),if((optlen > 0) && (optptr[1] == 0)), enter infinite loop. Test: receive a packet which the ip length > 20 and the first byte of ip option is 0, produce this issue Signed-off-by: Nyujuan.qi <yujuan.qi@mediatek.com> Acked-by: NPaul Moore <paul@paul-moore.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Grygorii Strashko says: ==================== net: ethernet: ti: cpts: fix tx timestamping timeout With the low Ethernet connection speed cpdma notification about packet processing can be received before CPTS TX timestamp event, which is set when packet actually left CPSW while cpdma notification is sent when packet pushed in CPSW fifo. As result, when connection is slow and CPU is fast enough TX timestamping is not working properly. Issue was discovered using timestamping tool on am57x boards with Ethernet link speed forced to 100M and on am335x-evm with Ethernet link speed forced to 10M. Patch3 - This series fixes it by introducing TX SKB queue to store PTP SKBs for which Ethernet Transmit Event hasn't been received yet and then re-check this queue with new Ethernet Transmit Events by scheduling CPTS overflow work more often until TX SKB queue is not empty. Patch 1,2 - As CPTS overflow work is time critical task it important to ensure that its scheduling is not delayed. Unfortunately, There could be significant delay in CPTS work schedule under high system load and on -RT which could cause CPTS misbehavior due to internal counter overflow and there is no way to tune CPTS overflow work execution policy and priority manually. The kthread_worker can be used instead of workqueues, as it creates separate named kthread for each worker and its its execution policy and priority can be configured using chrt tool. Instead of modifying CPTS driver itself it was proposed to it was proposed to add PTP auxiliary worker to the PHC subsystem [1], so other drivers can benefit from this feature also. [1] https://www.spinics.net/lists/netdev/msg445392.html changes in v4: - fixed memleak in ptp_clock_register() - undocumented change in cpts_find_ts() moved to separate patch (minor fix) changes in v3: - patch 1: added proper error handling in ptp_clock_register. minor comments applied. changes in v2: - added PTP auxiliary worker to the PHC subsystem Links v3: https://www.spinics.net/lists/netdev/msg446058.html v2: https://www.spinics.net/lists/netdev/msg445859.html v1: https://www.spinics.net/lists/netdev/msg445387.html ==================== Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Grygorii Strashko 提交于
Now the call chain cpts_find_ts() |- cpts_fifo_read(cpts, CPTS_EV_PUSH) will stop reading CPTS FIFO if PUSH event is found. But this is not expected and CPTS FIFI should be completely drained here. This is most probably copy-paste error and it has no negative impact as CPTS_EV_PUSH should not be present in FIFO without TS_PUSH request and cpts_systim_read() and cpts_find_ts() synchronized by spin_lock. Correct above by calling cpts_fifo_read() with -1 parameter, so it will read all CPTS event from FIFO. Signed-off-by: NGrygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Grygorii Strashko 提交于
With the low speed Ethernet connection CPDMA notification about packet processing can be received before CPTS TX timestamp event, which is set when packet actually left CPSW while cpdma notification is sent when packet pushed in CPSW fifo. As result, when connection is slow and CPU is fast enough TX timestamping is not working properly. Fix it, by introducing TX SKB queue to store PTP SKBs for which Ethernet Transmit Event hasn't been received yet and then re-check this queue with new Ethernet Transmit Events by scheduling CPTS overflow work more often (every 1 jiffies) until TX SKB queue is not empty. Side effect of this change is: - User space tools require to take into account possible delay in TX timestamp processing (for example ptp4l works with tx_timestamp_timeout=400 under net traffic and tx_timestamp_timeout=25 in idle). Signed-off-by: NGrygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Grygorii Strashko 提交于
There could be significant delay in CPTS work schedule under high system load and on -RT which could cause CPTS misbehavior due to internal counter overflow. Usage of own kthread_worker allows to avoid such kind of issues and makes it possible to tune priority of CPTS kthread_worker thread on -RT (thread name "cpts"). Hence, the CPTS driver is converted to use PTP auxiliary worker as PHC subsystem implements such functionality in a generic way now. Signed-off-by: NGrygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Grygorii Strashko 提交于
Many PTP drivers required to perform some asynchronous or periodic work, like periodically handling PHC counter overflow or handle delayed timestamp for RX/TX network packets. In most of the cases, such work is implemented using workqueues. Unfortunately, Kernel workqueues might introduce significant delay in work scheduling under high system load and on -RT, which could cause misbehavior of PTP drivers due to internal counter overflow, for example, and there is no way to tune its execution policy and priority manuallly. Hence, The kthread_worker can be used insted of workqueues, as it create separte named kthread for each worker and its its execution policy and priority can be configured using chrt tool. This prblem was reported for two drivers TI CPSW CPTS and dp83640, so instead of modifying each of these driver it was proposed to add PTP auxiliary worker to the PHC subsystem. The patch adds PTP auxiliary worker in PHC subsystem using kthread_worker and kthread_delayed_work and introduces two new PHC subsystem APIs: - long (*do_aux_work)(struct ptp_clock_info *ptp) callback in ptp_clock_info structure, which driver should assign if it require to perform asynchronous or periodic work. Driver should return the delay of the PTP next auxiliary work scheduling time (>=0) or negative value in case further scheduling is not required. - int ptp_schedule_worker(struct ptp_clock *ptp, unsigned long delay) which allows schedule PTP auxiliary work. The name of kthread_worker thread corresponds PTP PHC device name "ptp%d". Signed-off-by: NGrygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 01 8月, 2017 1 次提交
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net由 Linus Torvalds 提交于
Pull networking fixes from David Miller: 1) Handle notifier registry failures properly in tun/tap driver, from Tonghao Zhang. 2) Fix bpf verifier handling of subtraction bounds and add a testcase for this, from Edward Cree. 3) Increase reset timeout in ftgmac100 driver, from Ben Herrenschmidt. 4) Fix use after free in prd_retire_rx_blk_timer_exired() in AF_PACKET, from Cong Wang. 5) Fix SElinux regression due to recent UDP optimizations, from Paolo Abeni. 6) We accidently increment IPSTATS_MIB_FRAGFAILS in the ipv6 code paths, fix from Stefano Brivio. 7) Fix some mem leaks in dccp, from Xin Long. 8) Adjust MDIO_BUS kconfig deps to avoid build errors, from Arnd Bergmann. 9) Mac address length check and buffer size fixes from Cong Wang. 10) Don't leak sockets in ipv6 udp early demux, from Paolo Abeni. 11) Fix return value when copy_from_user() fails in bpf_prog_get_info_by_fd(), from Daniel Borkmann. 12) Handle PHY_HALTED properly in phy library state machine, from Florian Fainelli. 13) Fix OOPS in fib_sync_down_dev(), from Ido Schimmel. 14) Fix truesize calculation in virtio_net which led to performance regressions, from Michael S Tsirkin. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (76 commits) samples/bpf: fix bpf tunnel cleanup udp6: fix jumbogram reception ppp: Fix a scheduling-while-atomic bug in del_chan Revert "net: bcmgenet: Remove init parameter from bcmgenet_mii_config" virtio_net: fix truesize for mergeable buffers mv643xx_eth: fix of_irq_to_resource() error check MAINTAINERS: Add more files to the PHY LIBRARY section ipv4: fib: Fix NULL pointer deref during fib_sync_down_dev() net: phy: Correctly process PHY_HALTED in phy_stop_machine() sunhme: fix up GREG_STAT and GREG_IMASK register offsets bpf: fix bpf_prog_get_info_by_fd to dump correct xlated_prog_len tcp: avoid bogus gcc-7 array-bounds warning net: tc35815: fix spelling mistake: "Intterrupt" -> "Interrupt" bpf: don't indicate success when copy_from_user fails udp6: fix socket leak on early demux net: thunderx: Fix BGX transmit stall due to underflow Revert "vhost: cache used event for better performance" team: use a larger struct for mac address net: check dev->addr_len for dev_set_mac_address() phy: bcm-ns-usb3: fix MDIO_BUS dependency ...
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