- 10 Mar, 2021 40 commits
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Petr Machata authored
The indicated version fixes the following two issues: - MIRROR_SAMPLER_ACTION.mirror_probability_rate inverted. This has implication for per-flow sampling. - When adjacency is replaced-if-inactive (RATR.opcode=3), bad parameter was reported when replacing an active entry. This breaks offload of resilient next-hop groups. Signed-off-by:
Petr Machata <petrm@nvidia.com> Signed-off-by:
Ido Schimmel <idosch@nvidia.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Amit Cohen authored
The comment did not include the register name. Add `pmaos` to align the comment with other comments. Signed-off-by:
Amit Cohen <amcohen@nvidia.com> Signed-off-by:
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Danielle Ratson authored
'Uppers' is not clear enough for all users when referring to upper devices. Reword the error message so it will be clearer. Signed-off-by:
Danielle Ratson <danieller@nvidia.com> Signed-off-by:
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Shubhankar Kuranagatti authored
The series of space has been replaced by tab space wherever required. Signed-off-by:
Shubhankar Kuranagatti <shubhankarvk@gmail.com> Signed-off-by:
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Vladimir Oltean authored
As explained in commit 29d98f54 ("net: enetc: allow hardware timestamping on TX queues with tc-etf enabled"), hardware TX timestamping requires an skb with skb->tstamp = 0. When a packet is sent with SO_TXTIME, the skb->skb_mstamp_ns corrupts the value of skb->tstamp, so the drivers need to explicitly reset skb->tstamp to zero after consuming the TX time. Create a helper named skb_txtime_consumed() which does just that. All drivers which offload TC_SETUP_QDISC_ETF should implement it, and it would make it easier to assess during review whether they do the right thing in order to be compatible with hardware timestamping or not. Suggested-by:
Vinicius Costa Gomes <vinicius.gomes@intel.com> Signed-off-by:
Vladimir Oltean <vladimir.oltean@nxp.com> Acked-by:
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Maciej W. Rozycki authored
Following the recent update to MAINTAINERS update my e-mail address. Signed-off-by:
Maciej W. Rozycki <macro@orcam.me.uk> Signed-off-by:
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Maciej W. Rozycki authored
Following the recent update to MAINTAINERS update my e-mail address. Signed-off-by:
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Maciej W. Rozycki authored
Following the recent update to MAINTAINERS update my e-mail address. Signed-off-by:
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Ido Schimmel authored
Implement this callback in order to get the offloaded stats added to the kernel stats. Signed-off-by:
Jiri Pirko <jiri@nvidia.com> Signed-off-by:
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Yang Li authored
Fix the following coccicheck warning: ./drivers/isdn/mISDN/dsp_core.c:956:6-9: Unneeded variable: "err". Return "0" on line 1001 Reported-by:
Abaci Robot <abaci@linux.alibaba.com> Signed-off-by:
Yang Li <yang.lee@linux.alibaba.com> Signed-off-by:
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Rafał Miłecki authored
BCM4908 devices have MAC address accessible using NVMEM so it's needed to use OF helper for reading it. Signed-off-by:
Rafał Miłecki <rafal@milecki.pl> Signed-off-by:
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Yunsheng Lin authored
gro list uses skb_shinfo(skb)->frag_list to link two skb together, and NAPI_GRO_CB(p)->last->next is used when there are more skb, see skb_gro_receive_list(). gso expects that each segmented skb is linked together using skb->next, so only the first skb->next need to set to skb_shinfo(skb)-> frag_list when doing gso list segment. It is the same reason that nskb->next does not need to be set to list_skb before goto the error handling, because nskb->next already pointers to list_skb. And nskb is also the last skb at the end of loop, so remove tail variable and use nskb instead. Signed-off-by:
Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enable -Wimplicit-fallthrough for Clang, fix multiple warnings by explicitly adding a couple of break statements instead of just letting the code fall through to the next case. Link: https://github.com/KSPP/linux/issues/115Reviewed-by:
Igor Russkikh <irusskikh@marvell.com> Signed-off-by:
Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enable -Wimplicit-fallthrough for Clang, fix multiple warnings by explicitly adding multiple break statements instead of letting the code fall through to the next case. Link: https://github.com/KSPP/linux/issues/115Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enable -Wimplicit-fallthrough for Clang, fix multiple warnings by explicitly adding multiple break statements instead of letting the code fall through to the next case. Link: https://github.com/KSPP/linux/issues/115Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning by explicitly adding a break statement instead of letting the code fall through to the next case. Link: https://github.com/KSPP/linux/issues/115Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning by explicitly adding a break statement instead of letting the code fall through to the next case. Link: https://github.com/KSPP/linux/issues/115Acked-by:
Nikolay Aleksandrov <nikolay@nvidia.com> Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning by explicitly adding a break statement instead of letting the code fall through to the next case. Link: https://github.com/KSPP/linux/issues/115Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning by explicitly adding a break statement instead of letting the code fall through to the next case. Link: https://github.com/KSPP/linux/issues/115Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning by explicitly adding a break statement instead of just letting the code fall through to the next case. Link: https://github.com/KSPP/linux/issues/115Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning by explicitly adding a break statement instead of just letting the code fall through to the next case. Link: https://github.com/KSPP/linux/issues/115Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning by explicitly adding a break statement instead of just letting the code fall through to the next case. Signed-off-by:
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Gustavo A. R. Silva authored
There is a regular need in the kernel to provide a way to declare having a dynamically sized set of trailing elements in a structure. Kernel code should always use “flexible array members”[1] for these cases. The older style of one-element or zero-length arrays should no longer be used[2]. Refactor the code according to the use of flexible-array members in smt_sif_operation structure, instead of one-element arrays. Also, make use of the struct_size() helper instead of the open-coded version to calculate the size of the struct-with-flex-array. Additionally, make use of the typeof operator to properly determine the object type to be passed to macro smtod(). Also, this helps the ongoing efforts to enable -Warray-bounds by fixing the following warnings: CC [M] drivers/net/fddi/skfp/smt.o drivers/net/fddi/skfp/smt.c: In function ‘smt_send_sif_operation’: drivers/net/fddi/skfp/smt.c:1084:30: warning: array subscript 1 is above array bounds of ‘struct smt_p_lem[1]’ [-Warray-bounds] 1084 | smt_fill_lem(smc,&sif->lem[i],i) ; | ~~~~~~~~^~~ In file included from drivers/net/fddi/skfp/h/smc.h:42, from drivers/net/fddi/skfp/smt.c:15: drivers/net/fddi/skfp/h/smt.h:767:19: note: while referencing ‘lem’ 767 | struct smt_p_lem lem[1] ; /* phy lem status */ | ^~~ drivers/net/fddi/skfp/smt.c:1084:30: warning: array subscript 1 is above array bounds of ‘struct smt_p_lem[1]’ [-Warray-bounds] 1084 | smt_fill_lem(smc,&sif->lem[i],i) ; | ~~~~~~~~^~~ In file included from drivers/net/fddi/skfp/h/smc.h:42, from drivers/net/fddi/skfp/smt.c:15: drivers/net/fddi/skfp/h/smt.h:767:19: note: while referencing ‘lem’ 767 | struct smt_p_lem lem[1] ; /* phy lem status */ | ^~~ drivers/net/fddi/skfp/smt.c:1084:30: warning: array subscript 1 is above array bounds of ‘struct smt_p_lem[1]’ [-Warray-bounds] 1084 | smt_fill_lem(smc,&sif->lem[i],i) ; | ~~~~~~~~^~~ In file included from drivers/net/fddi/skfp/h/smc.h:42, from drivers/net/fddi/skfp/smt.c:15: drivers/net/fddi/skfp/h/smt.h:767:19: note: while referencing ‘lem’ 767 | struct smt_p_lem lem[1] ; /* phy lem status */ | ^~~ drivers/net/fddi/skfp/smt.c:1084:30: warning: array subscript 1 is above array bounds of ‘struct smt_p_lem[1]’ [-Warray-bounds] 1084 | smt_fill_lem(smc,&sif->lem[i],i) ; | ~~~~~~~~^~~ In file included from drivers/net/fddi/skfp/h/smc.h:42, from drivers/net/fddi/skfp/smt.c:15: drivers/net/fddi/skfp/h/smt.h:767:19: note: while referencing ‘lem’ 767 | struct smt_p_lem lem[1] ; /* phy lem status */ | ^~~ drivers/net/fddi/skfp/smt.c:1084:30: warning: array subscript 1 is above array bounds of ‘struct smt_p_lem[1]’ [-Warray-bounds] 1084 | smt_fill_lem(smc,&sif->lem[i],i) ; | ~~~~~~~~^~~ In file included from drivers/net/fddi/skfp/h/smc.h:42, from drivers/net/fddi/skfp/smt.c:15: drivers/net/fddi/skfp/h/smt.h:767:19: note: while referencing ‘lem’ 767 | struct smt_p_lem lem[1] ; /* phy lem status */ | ^~~ drivers/net/fddi/skfp/smt.c:1084:30: warning: array subscript 1 is above array bounds of ‘struct smt_p_lem[1]’ [-Warray-bounds] 1084 | smt_fill_lem(smc,&sif->lem[i],i) ; | ~~~~~~~~^~~ In file included from drivers/net/fddi/skfp/h/smc.h:42, from drivers/net/fddi/skfp/smt.c:15: drivers/net/fddi/skfp/h/smt.h:767:19: note: while referencing ‘lem’ 767 | struct smt_p_lem lem[1] ; /* phy lem status */ | ^~~ drivers/net/fddi/skfp/smt.c:1084:30: warning: array subscript 1 is above array bounds of ‘struct smt_p_lem[1]’ [-Warray-bounds] 1084 | smt_fill_lem(smc,&sif->lem[i],i) ; | ~~~~~~~~^~~ In file included from drivers/net/fddi/skfp/h/smc.h:42, from drivers/net/fddi/skfp/smt.c:15: drivers/net/fddi/skfp/h/smt.h:767:19: note: while referencing ‘lem’ 767 | struct smt_p_lem lem[1] ; /* phy lem status */ | ^~~ drivers/net/fddi/skfp/smt.c:1084:30: warning: array subscript 1 is above array bounds of ‘struct smt_p_lem[1]’ [-Warray-bounds] 1084 | smt_fill_lem(smc,&sif->lem[i],i) ; | ~~~~~~~~^~~ In file included from drivers/net/fddi/skfp/h/smc.h:42, from drivers/net/fddi/skfp/smt.c:15: drivers/net/fddi/skfp/h/smt.h:767:19: note: while referencing ‘lem’ 767 | struct smt_p_lem lem[1] ; /* phy lem status */ | ^~~ drivers/net/fddi/skfp/smt.c:1084:30: warning: array subscript 1 is above array bounds of ‘struct smt_p_lem[1]’ [-Warray-bounds] 1084 | smt_fill_lem(smc,&sif->lem[i],i) ; | ~~~~~~~~^~~ In file included from drivers/net/fddi/skfp/h/smc.h:42, from drivers/net/fddi/skfp/smt.c:15: drivers/net/fddi/skfp/h/smt.h:767:19: note: while referencing ‘lem’ 767 | struct smt_p_lem lem[1] ; /* phy lem status */ | ^~~ drivers/net/fddi/skfp/smt.c:1084:30: warning: array subscript 1 is above array bounds of ‘struct smt_p_lem[1]’ [-Warray-bounds] 1084 | smt_fill_lem(smc,&sif->lem[i],i) ; | ~~~~~~~~^~~ In file included from drivers/net/fddi/skfp/h/smc.h:42, from drivers/net/fddi/skfp/smt.c:15: drivers/net/fddi/skfp/h/smt.h:767:19: note: while referencing ‘lem’ 767 | struct smt_p_lem lem[1] ; /* phy lem status */ [1] https://en.wikipedia.org/wiki/Flexible_array_member [2] https://www.kernel.org/doc/html/v5.10/process/deprecated.html#zero-length-and-one-element-arrays Link: https://github.com/KSPP/linux/issues/79 Link: https://github.com/KSPP/linux/issues/109Signed-off-by: -
Yejune Deng authored
There is no need to assign the msg->msg_name to sin or sin6, because there is DECLARE_SOCKADDR statement. Signed-off-by:
Yejune Deng <yejune.deng@gmail.com> Signed-off-by:
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Wang Qing authored
rewriteing -> rewriting Signed-off-by:
Wang Qing <wangqing@vivo.com> Signed-off-by:
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Wang Qing authored
wheter -> whether Signed-off-by:
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Xuan Zhuo authored
The number of queues implemented by many virtio backends is limited, especially some machines have a large number of CPUs. In this case, it is often impossible to allocate a separate queue for XDP_TX/XDP_REDIRECT, then xdp cannot be loaded to work, even xdp does not use the XDP_TX/XDP_REDIRECT. This patch allows XDP_TX/XDP_REDIRECT to run by reuse the existing SQ with __netif_tx_lock() hold when there are not enough queues. Signed-off-by:
Xuan Zhuo <xuanzhuo@linux.alibaba.com> Reviewed-by:
Dust Li <dust.li@linux.alibaba.com> Acked-by:
Jason Wang <jasowang@redhat.com> Signed-off-by:
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Menglong Dong authored
The bit mask for MSG_* seems a little confused here. Replace it with BIT() to make it clear to understand. Signed-off-by:
Menglong Dong <dong.menglong@zte.com.cn> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextDavid S. Miller authored
Alexei Starovoitov says: ==================== pull-request: bpf-next 2021-03-09 The following pull-request contains BPF updates for your *net-next* tree. We've added 90 non-merge commits during the last 17 day(s) which contain a total of 114 files changed, 5158 insertions(+), 1288 deletions(-). The main changes are: 1) Faster bpf_redirect_map(), from Björn. 2) skmsg cleanup, from Cong. 3) Support for floating point types in BTF, from Ilya. 4) Documentation for sys_bpf commands, from Joe. 5) Support for sk_lookup in bpf_prog_test_run, form Lorenz. 6) Enable task local storage for tracing programs, from Song. 7) bpf_for_each_map_elem() helper, from Yonghong. ==================== Signed-off-by: -
git://git.kernel.org:/pub/scm/linux/kernel/git/netdev/netLinus Torvalds authored
Pull networking fixes from David Miller: 1) Fix transmissions in dynamic SMPS mode in ath9k, from Felix Fietkau. 2) TX skb error handling fix in mt76 driver, also from Felix. 3) Fix BPF_FETCH atomic in x86 JIT, from Brendan Jackman. 4) Avoid double free of percpu pointers when freeing a cloned bpf prog. From Cong Wang. 5) Use correct printf format for dma_addr_t in ath11k, from Geert Uytterhoeven. 6) Fix resolve_btfids build with older toolchains, from Kun-Chuan Hsieh. 7) Don't report truncated frames to mac80211 in mt76 driver, from Lorenzop Bianconi. 8) Fix watcdog timeout on suspend/resume of stmmac, from Joakim Zhang. 9) mscc ocelot needs NET_DEVLINK selct in Kconfig, from Arnd Bergmann. 10) Fix sign comparison bug in TCP_ZEROCOPY_RECEIVE getsockopt(), from Arjun Roy. 11) Ignore routes with deleted nexthop object in mlxsw, from Ido Schimmel. 12) Need to undo tcp early demux lookup sometimes in nf_nat, from Florian Westphal. 13) Fix gro aggregation for udp encaps with zero csum, from Daniel Borkmann. 14) Make sure to always use imp*_ndo_send when necessaey, from Jason A. Donenfeld. 15) Fix TRSCER masks in sh_eth driver from Sergey Shtylyov. 16) prevent overly huge skb allocationsd in qrtr, from Pavel Skripkin. 17) Prevent rx ring copnsumer index loss of sync in enetc, from Vladimir Oltean. 18) Make sure textsearch copntrol block is large enough, from Wilem de Bruijn. 19) Revert MAC changes to r8152 leading to instability, from Hates Wang. 20) Advance iov in 9p even for empty reads, from Jissheng Zhang. 21) Double hook unregister in nftables, from PabloNeira Ayuso. 22) Fix memleak in ixgbe, fropm Dinghao Liu. 23) Avoid dups in pkt scheduler class dumps, from Maximilian Heyne. 24) Various mptcp fixes from Florian Westphal, Paolo Abeni, and Geliang Tang. 25) Fix DOI refcount bugs in cipso, from Paul Moore. 26) One too many irqsave in ibmvnic, from Junlin Yang. 27) Fix infinite loop with MPLS gso segmenting via virtio_net, from Balazs Nemeth. * git://git.kernel.org:/pub/scm/linux/kernel/git/netdev/net: (164 commits) s390/qeth: fix notification for pending buffers during teardown s390/qeth: schedule TX NAPI on QAOB completion s390/qeth: improve completion of pending TX buffers s390/qeth: fix memory leak after failed TX Buffer allocation net: avoid infinite loop in mpls_gso_segment when mpls_hlen == 0 net: check if protocol extracted by virtio_net_hdr_set_proto is correct net: dsa: xrs700x: check if partner is same as port in hsr join net: lapbether: Remove netif_start_queue / netif_stop_queue atm: idt77252: fix null-ptr-dereference atm: uPD98402: fix incorrect allocation atm: fix a typo in the struct description net: qrtr: fix error return code of qrtr_sendmsg() mptcp: fix length of ADD_ADDR with port sub-option net: bonding: fix error return code of bond_neigh_init() net: enetc: allow hardware timestamping on TX queues with tc-etf enabled net: enetc: set MAC RX FIFO to recommended value net: davicom: Use platform_get_irq_optional() net: davicom: Fix regulator not turned off on driver removal net: davicom: Fix regulator not turned off on failed probe net: dsa: fix switchdev objects on bridge master mistakenly being applied on ports ... -
git://git.kernel.org:/pub/scm/linux/kernel/git/davem/sparcLinus Torvalds authored
Pull sparc fixes from David Miller: "Fix opcode filtering for exceptions, and clean up defconfig" * git://git.kernel.org:/pub/scm/linux/kernel/git/davem/sparc: sparc: sparc64_defconfig: remove duplicate CONFIGs sparc64: Fix opcode filtering in handling of no fault loads
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Corentin Labbe authored
After my patch there is CONFIG_ATA defined twice. Remove the duplicate one. Same problem for CONFIG_HAPPYMEAL, except I added as builtin for boot test with NFS. Reported-by:
Stephen Rothwell <sfr@canb.auug.org.au> Fixes: a57cdeb3 ("sparc: sparc64_defconfig: add necessary configs for qemu") Signed-off-by:
Corentin Labbe <clabbe@baylibre.com> Signed-off-by:
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Rob Gardner authored
is_no_fault_exception() has two bugs which were discovered via random opcode testing with stress-ng. Both are caused by improper filtering of opcodes. The first bug can be triggered by a floating point store with a no-fault ASI, for instance "sta %f0, [%g0] #ASI_PNF", opcode C1A01040. The code first tests op3[5] (0x1000000), which denotes a floating point instruction, and then tests op3[2] (0x200000), which denotes a store instruction. But these bits are not mutually exclusive, and the above mentioned opcode has both bits set. The intent is to filter out stores, so the test for stores must be done first in order to have any effect. The second bug can be triggered by a floating point load with one of the invalid ASI values 0x8e or 0x8f, which pass this check in is_no_fault_exception(): if ((asi & 0xf2) == ASI_PNF) An example instruction is "ldqa [%l7 + %o7] #ASI 0x8f, %f38", opcode CF95D1EF. Asi values greater than 0x8b (ASI_SNFL) are fatal in handle_ldf_stq(), and is_no_fault_exception() must not allow these invalid asi values to make it that far. In both of these cases, handle_ldf_stq() reacts by calling sun4v_data_access_exception() or spitfire_data_access_exception(), which call is_no_fault_exception() and results in an infinite recursion. Signed-off-by:Rob Gardner <rob.gardner@oracle.com> Tested-by:
Anatoly Pugachev <matorola@gmail.com> Signed-off-by:
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David S. Miller authored
Julian Wiedmann says: ==================== s390/qeth: fixes 2021-03-09 please apply the following patch series to netdev's net tree. This brings one fix for a memleak in an error path of the setup code. Also several fixes for dealing with pending TX buffers - two for old bugs in their completion handling, and one recent regression in a teardown path. ==================== Signed-off-by: -
Julian Wiedmann authored
The cited commit reworked the state machine for pending TX buffers. In qeth_iqd_tx_complete() it turned PENDING into a transient state, and uses NEED_QAOB for buffers that get parked while waiting for their QAOB completion. But it missed to adjust the check in qeth_tx_complete_buf(). So if qeth_tx_complete_pending_bufs() is called during teardown to drain the parked TX buffers, we no longer raise a notification for af_iucv. Instead of updating the checked state, just move this code into qeth_tx_complete_pending_bufs() itself. This also gets rid of the special-case in the common TX completion path. Fixes: 8908f36d ("s390/qeth: fix af_iucv notification race") Signed-off-by:
Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by:
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Julian Wiedmann authored
When a QAOB notifies us that a pending TX buffer has been delivered, the actual TX completion processing by qeth_tx_complete_pending_bufs() is done within the context of a TX NAPI instance. We shouldn't rely on this instance being scheduled by some other TX event, but just do it ourselves. qeth_qdio_handle_aob() is called from qeth_poll(), ie. our main NAPI instance. To avoid touching the TX queue's NAPI instance before/after it is (un-)registered, reorder the code in qeth_open() and qeth_stop() accordingly. Fixes: 0da9581d ("qeth: exploit asynchronous delivery of storage blocks") Signed-off-by:
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Julian Wiedmann authored
The current design attaches a pending TX buffer to a custom single-linked list, which is anchored at the buffer's slot on the TX ring. The buffer is then checked for final completion whenever this slot is processed during a subsequent TX NAPI poll cycle. But if there's insufficient traffic on the ring, we might never make enough progress to get back to this ring slot and discover the pending buffer's final TX completion. In particular if this missing TX completion blocks the application from sending further traffic. So convert the custom single-linked list code to a per-queue list_head, and scan this list on every TX NAPI cycle. Fixes: 0da9581d ("qeth: exploit asynchronous delivery of storage blocks") Signed-off-by:
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Julian Wiedmann authored
When qeth_alloc_qdio_queues() fails to allocate one of the buffers that back an Output Queue, the 'out_freeoutqbufs' path will free all previously allocated buffers for this queue. But it misses to free the half-finished queue struct itself. Move the buffer allocation into qeth_alloc_output_queue(), and deal with such errors internally. Fixes: 0da9581d ("qeth: exploit asynchronous delivery of storage blocks") Signed-off-by:
Alexandra Winter <wintera@linux.ibm.com> Signed-off-by:
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David S. Miller authored
Balazs Nemeth says: ==================== net: prevent infinite loop caused by incorrect proto from virtio_net_hdr_set_proto These patches prevent an infinite loop for gso packets with a protocol from virtio net hdr that doesn't match the protocol in the packet. Note that packets coming from a device without header_ops->parse_protocol being implemented will not be caught by the check in virtio_net_hdr_to_skb, but the infinite loop will still be prevented by the check in the gso layer. Changes from v2 to v3: - Remove unused *eth. - Use MPLS_HLEN to also check if the MPLS header length is a multiple of four. ==================== Signed-off-by: -
Balazs Nemeth authored
A packet with skb_inner_network_header(skb) == skb_network_header(skb) and ETH_P_MPLS_UC will prevent mpls_gso_segment from pulling any headers from the packet. Subsequently, the call to skb_mac_gso_segment will again call mpls_gso_segment with the same packet leading to an infinite loop. In addition, ensure that the header length is a multiple of four, which should hold irrespective of the number of stacked labels. Signed-off-by:
Balazs Nemeth <bnemeth@redhat.com> Acked-by:
Willem de Bruijn <willemb@google.com> Reviewed-by:
David Ahern <dsahern@kernel.org> Signed-off-by:
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