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* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds2018-03-0558-357/+433
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking fixes from David Miller: 1) Use an appropriate TSQ pacing shift in mac80211, from Toke Høiland-Jørgensen. 2) Just like ipv4's ip_route_me_harder(), we have to use skb_to_full_sk in ip6_route_me_harder, from Eric Dumazet. 3) Fix several shutdown races and similar other problems in l2tp, from James Chapman. 4) Handle missing XDP flush properly in tuntap, for real this time. From Jason Wang. 5) Out-of-bounds access in powerpc ebpf tailcalls, from Daniel Borkmann. 6) Fix phy_resume() locking, from Andrew Lunn. 7) IFLA_MTU values are ignored on newlink for some tunnel types, fix from Xin Long. 8) Revert F-RTO middle box workarounds, they only handle one dimension of the problem. From Yuchung Cheng. 9) Fix socket refcounting in RDS, from Ka-Cheong Poon. 10) Don't allow ppp unit registration to an unregistered channel, from Guillaume Nault. 11) Various hv_netvsc fixes from Stephen Hemminger. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (98 commits) hv_netvsc: propagate rx filters to VF hv_netvsc: filter multicast/broadcast hv_netvsc: defer queue selection to VF hv_netvsc: use napi_schedule_irqoff hv_netvsc: fix race in napi poll when rescheduling hv_netvsc: cancel subchannel setup before halting device hv_netvsc: fix error unwind handling if vmbus_open fails hv_netvsc: only wake transmit queue if link is up hv_netvsc: avoid retry on send during shutdown virtio-net: re enable XDP_REDIRECT for mergeable buffer ppp: prevent unregistered channels from connecting to PPP units tc-testing: skbmod: fix match value of ethertype mlxsw: spectrum_switchdev: Check success of FDB add operation net: make skb_gso_*_seglen functions private net: xfrm: use skb_gso_validate_network_len() to check gso sizes net: sched: tbf: handle GSO_BY_FRAGS case in enqueue net: rename skb_gso_validate_mtu -> skb_gso_validate_network_len rds: Incorrect reference counting in TCP socket creation net: ethtool: don't ignore return from driver get_fecparam method vrf: check forwarding on the original netdevice when generating ICMP dest unreachable ...
| * net: make skb_gso_*_seglen functions privateDaniel Axtens2018-03-041-2/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | They're very hard to use properly as they do not consider the GSO_BY_FRAGS case. Code should use skb_gso_validate_network_len and skb_gso_validate_mac_len as they do consider this case. Make the seglen functions static, which stops people using them outside of skbuff.c Signed-off-by: Daniel Axtens <dja@axtens.net> Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: xfrm: use skb_gso_validate_network_len() to check gso sizesDaniel Axtens2018-03-042-2/+3
| | | | | | | | | | | | | | | | | | | | Replace skb_gso_network_seglen() with skb_gso_validate_network_len(), as it considers the GSO_BY_FRAGS case. Signed-off-by: Daniel Axtens <dja@axtens.net> Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: sched: tbf: handle GSO_BY_FRAGS case in enqueueDaniel Axtens2018-03-041-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | tbf_enqueue() checks the size of a packet before enqueuing it. However, the GSO size check does not consider the GSO_BY_FRAGS case, and so will drop GSO SCTP packets, causing a massive drop in throughput. Use skb_gso_validate_mac_len() instead, as it does consider that case. Signed-off-by: Daniel Axtens <dja@axtens.net> Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: rename skb_gso_validate_mtu -> skb_gso_validate_network_lenDaniel Axtens2018-03-048-12/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If you take a GSO skb, and split it into packets, will the network length (L3 headers + L4 headers + payload) of those packets be small enough to fit within a given MTU? skb_gso_validate_mtu gives you the answer to that question. However, we recently added to add a way to validate the MAC length of a split GSO skb (L2+L3+L4+payload), and the names get confusing, so rename skb_gso_validate_mtu to skb_gso_validate_network_len Signed-off-by: Daniel Axtens <dja@axtens.net> Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * Merge tag 'batadv-net-for-davem-20180302' of git://git.open-mesh.org/linux-mergeDavid S. Miller2018-03-039-39/+50
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Simon Wunderlich says: ==================== Here are some batman-adv bugfixes: - fix skb checksum issues, by Matthias Schiffer (2 patches) - fix exception handling when dumping data objects through netlink, by Sven Eckelmann (4 patches) - fix handling of interface indices, by Sven Eckelmann ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| | * batman-adv: Fix internal interface indices typesSven Eckelmann2018-02-255-21/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | batman-adv uses internal indices for each enabled and active interface. It is currently used by the B.A.T.M.A.N. IV algorithm to identifify the correct position in the ogm_cnt bitmaps. The type for the number of enabled interfaces (which defines the next interface index) was set to char. This type can be (depending on the architecture) either signed (limiting batman-adv to 127 active slave interfaces) or unsigned (limiting batman-adv to 255 active slave interfaces). This limit was not correctly checked when an interface was enabled and thus an overflow happened. This was only catched on systems with the signed char type when the B.A.T.M.A.N. IV code tried to resize its counter arrays with a negative size. The if_num interface index was only a s16 and therefore significantly smaller than the ifindex (int) used by the code net code. Both &batadv_hard_iface->if_num and &batadv_priv->num_ifaces must be (unsigned) int to support the same number of slave interfaces as the net core code. And the interface activation code must check the number of active slave interfaces to avoid integer overflows. Fixes: c6c8fea29769 ("net: Add batman-adv meshing protocol") Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
| | * batman-adv: Fix netlink dumping of BLA backbonesSven Eckelmann2018-02-251-4/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The function batadv_bla_backbone_dump_bucket must be able to handle non-complete dumps of a single bucket. It tries to do that by saving the latest dumped index in *idx_skip to inform the caller about the current state. But the caller only assumes that buckets were not completely dumped when the return code is non-zero. This function must therefore also return a non-zero index when the dumping of an entry failed. Otherwise the caller will just skip all remaining buckets. And the function must also reset *idx_skip back to zero when it finished a bucket. Otherwise it will skip the same number of entries in the next bucket as the previous one had. Fixes: ea4152e11716 ("batman-adv: add backbone table netlink support") Reported-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
| | * batman-adv: Fix netlink dumping of BLA claimsSven Eckelmann2018-02-251-4/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The function batadv_bla_claim_dump_bucket must be able to handle non-complete dumps of a single bucket. It tries to do that by saving the latest dumped index in *idx_skip to inform the caller about the current state. But the caller only assumes that buckets were not completely dumped when the return code is non-zero. This function must therefore also return a non-zero index when the dumping of an entry failed. Otherwise the caller will just skip all remaining buckets. And the function must also reset *idx_skip back to zero when it finished a bucket. Otherwise it will skip the same number of entries in the next bucket as the previous one had. Fixes: 04f3f5bf1883 ("batman-adv: add B.A.T.M.A.N. Dump BLA claims via netlink") Reported-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
| | * batman-adv: Ignore invalid batadv_v_gw during netlink sendSven Eckelmann2018-02-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The function batadv_v_gw_dump stops the processing loop when batadv_v_gw_dump_entry returns a non-0 return code. This should only happen when the buffer is full. Otherwise, an empty message may be returned by batadv_gw_dump. This empty message will then stop the netlink dumping of gateway entries. At worst, not a single entry is returned to userspace even when plenty of possible gateways exist. Fixes: b71bb6f924fe ("batman-adv: add B.A.T.M.A.N. V bat_gw_dump implementations") Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
| | * batman-adv: Ignore invalid batadv_iv_gw during netlink sendSven Eckelmann2018-02-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The function batadv_iv_gw_dump stops the processing loop when batadv_iv_gw_dump_entry returns a non-0 return code. This should only happen when the buffer is full. Otherwise, an empty message may be returned by batadv_gw_dump. This empty message will then stop the netlink dumping of gateway entries. At worst, not a single entry is returned to userspace even when plenty of possible gateways exist. Fixes: efb766af06e3 ("batman-adv: add B.A.T.M.A.N. IV bat_gw_dump implementations") Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
| | * batman-adv: invalidate checksum on fragment reassemblyMatthias Schiffer2018-02-251-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A more sophisticated implementation could try to combine fragment checksums when all fragments have CHECKSUM_COMPLETE and are split at even offsets. For now, we just set ip_summed to CHECKSUM_NONE to avoid "hw csum failure" warnings in the kernel log when fragmented frames are received. In consequence, skb_pull_rcsum() can be replaced with skb_pull(). Note that in usual setups, packets don't reach batman-adv with CHECKSUM_COMPLETE (I assume NICs bail out of checksumming when they see batadv's ethtype?), which is why the log messages do not occur on every system using batman-adv. I could reproduce this issue by stacking batman-adv on top of a VXLAN interface. Fixes: 610bfc6bc99b ("batman-adv: Receive fragmented packets and merge") Tested-by: Maximilian Wilhelm <max@sdn.clinic> Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
| | * batman-adv: fix packet checksum in receive pathMatthias Schiffer2018-02-251-7/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | eth_type_trans() internally calls skb_pull(), which does not adjust the skb checksum; skb_postpull_rcsum() is necessary to avoid log spam of the form "bat0: hw csum failure" when packets with CHECKSUM_COMPLETE are received. Note that in usual setups, packets don't reach batman-adv with CHECKSUM_COMPLETE (I assume NICs bail out of checksumming when they see batadv's ethtype?), which is why the log messages do not occur on every system using batman-adv. I could reproduce this issue by stacking batman-adv on top of a VXLAN interface. Fixes: c6c8fea29769 ("net: Add batman-adv meshing protocol") Tested-by: Maximilian Wilhelm <max@sdn.clinic> Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
| * | Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfDavid S. Miller2018-03-0211-39/+98
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pablo Neira Ayuso says: ==================== Netfilter/IPVS fixes for net The following patchset contains Netfilter fixes for your net tree, they are: 1) Put back reference on CLUSTERIP configuration structure from the error path, patch from Florian Westphal. 2) Put reference on CLUSTERIP configuration instead of freeing it, another cpu may still be walking over it, also from Florian. 3) Refetch pointer to IPv6 header from nf_nat_ipv6_manip_pkt() given packet manipulation may reallocation the skbuff header, from Florian. 4) Missing match size sanity checks in ebt_among, from Florian. 5) Convert BUG_ON to WARN_ON in ebtables, from Florian. 6) Sanity check userspace offsets from ebtables kernel, from Florian. 7) Missing checksum replace call in flowtable IPv4 DNAT, from Felix Fietkau. 8) Bump the right stats on checksum error from bridge netfilter, from Taehee Yoo. 9) Unset interface flag in IPv6 fib lookups otherwise we get misleading routing lookup results, from Florian. 10) Missing sk_to_full_sk() in ip6_route_me_harder() from Eric Dumazet. 11) Don't allow devices to be part of multiple flowtables at the same time, this may break setups. 12) Missing netlink attribute validation in flowtable deletion. 13) Wrong array index in nf_unregister_net_hook() call from error path in flowtable addition path. 14) Fix FTP IPVS helper when NAT mangling is in place, patch from Julian Anastasov. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | ipvs: remove IPS_NAT_MASK check to fix passive FTPJulian Anastasov2018-02-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The IPS_NAT_MASK check in 4.12 replaced previous check for nfct_nat() which was needed to fix a crash in 2.6.36-rc, see commit 7bcbf81a2296 ("ipvs: avoid oops for passive FTP"). But as IPVS does not set the IPS_SRC_NAT and IPS_DST_NAT bits, checking for IPS_NAT_MASK prevents PASV response to be properly mangled and blocks the transfer. Remove the check as it is not needed after 3.12 commit 41d73ec053d2 ("netfilter: nf_conntrack: make sequence number adjustments usuable without NAT") which changes nfct_nat() with nfct_seqadj() and especially after 3.13 commit b25adce16064 ("ipvs: correct usage/allocation of seqadj ext in ipvs"). Thanks to Li Shuang and Florian Westphal for reporting the problem! Reported-by: Li Shuang <shuali@redhat.com> Fixes: be7be6e161a2 ("netfilter: ipvs: fix incorrect conflict resolution") Signed-off-by: Julian Anastasov <ja@ssi.bg> Acked-by: Simon Horman <horms@verge.net.au> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * | netfilter: nf_tables: use the right index from flowtable error pathPablo Neira Ayuso2018-02-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the right loop index, not the number of devices in the array that we need to remove, the following message uncovered the problem: [ 5437.044119] hook not found, pf 5 num 0 [ 5437.044140] WARNING: CPU: 2 PID: 24983 at net/netfilter/core.c:376 __nf_unregister_net_hook+0x250/0x280 Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * | netfilter: nf_tables: missing attribute validation in nf_tables_delflowtable()Pablo Neira Ayuso2018-02-271-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | Return -EINVAL is mandatory attributes are missing. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * | netfilter: nf_tables: return EBUSY if device already belongs to flowtablePablo Neira Ayuso2018-02-271-1/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the netdevice is already part of a flowtable, return EBUSY. I cannot find a valid usecase for having two flowtables bound to the same netdevice. We can still have two flowtable where the device set is disjoint. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * | netfilter: use skb_to_full_sk in ip6_route_me_harderEric Dumazet2018-02-251-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For some reason, Florian forgot to apply to ip6_route_me_harder the fix that went in commit 29e09229d9f2 ("netfilter: use skb_to_full_sk in ip_route_me_harder") Fixes: ca6fb0651883 ("tcp: attach SYNACK messages to request sockets instead of listener")  Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * | netfilter: don't set F_IFACE on ipv6 fib lookupsFlorian Westphal2018-02-252-14/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "fib" starts to behave strangely when an ipv6 default route is added - the FIB lookup returns a route using 'oif' in this case. This behaviour was inherited from ip6tables rpfilter so change this as well. Bugzilla: https://bugzilla.netfilter.org/show_bug.cgi?id=1221 Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * | netfilter: increase IPSTATS_MIB_CSUMERRORS statTaehee Yoo2018-02-251-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the ip_rcv, IPSTATS_MIB_CSUMERRORS is increased when checksum error is occurred. bridge netfilter routine should increase IPSTATS_MIB_CSUMERRORS. Signed-off-by: Taehee Yoo <ap420073@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * | netfilter: nf_flow_table: fix checksum when handling DNATFelix Fietkau2018-02-251-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a missing call to csum_replace4 like on SNAT. Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * | netfilter: ebtables: CONFIG_COMPAT: don't trust userland offsetsFlorian Westphal2018-02-251-1/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We need to make sure the offsets are not out of range of the total size. Also check that they are in ascending order. The WARN_ON triggered by syzkaller (it sets panic_on_warn) is changed to also bail out, no point in continuing parsing. Briefly tested with simple ruleset of -A INPUT --limit 1/s' --log plus jump to custom chains using 32bit ebtables binary. Reported-by: <syzbot+845a53d13171abf8bf29@syzkaller.appspotmail.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * | netfilter: ebtables: convert BUG_ONs to WARN_ONsFlorian Westphal2018-02-251-9/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All of these conditions are not fatal and should have been WARN_ONs from the get-go. Convert them to WARN_ONs and bail out. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * | netfilter: bridge: ebt_among: add missing match size checksFlorian Westphal2018-02-251-2/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ebt_among is special, it has a dynamic match size and is exempt from the central size checks. Therefore it must check that the size of the match structure provided from userspace is sane by making sure em->match_size is at least the minimum size of the expected structure. The module has such a check, but its only done after accessing a structure that might be out of bounds. tested with: ebtables -A INPUT ... \ --among-dst fe:fe:fe:fe:fe:fe --among-dst fe:fe:fe:fe:fe:fe --among-src fe:fe:fe:fe:ff:f,fe:fe:fe:fe:fe:fb,fe:fe:fe:fe:fc:fd,fe:fe:fe:fe:fe:fd,fe:fe:fe:fe:fe:fe --among-src fe:fe:fe:fe:ff:f,fe:fe:fe:fe:fe:fa,fe:fe:fe:fe:fe:fd,fe:fe:fe:fe:fe:fe,fe:fe:fe:fe:fe:fe Reported-by: <syzbot+fe0b19af568972814355@syzkaller.appspotmail.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * | netfilter: ipv6: fix use-after-free Write in nf_nat_ipv6_manip_pktFlorian Westphal2018-02-251-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | l4proto->manip_pkt() can cause reallocation of skb head so pointer to the ipv6 header must be reloaded. Reported-and-tested-by: <syzbot+10005f4292fc9cc89de7@syzkaller.appspotmail.com> Fixes: 58a317f1061c89 ("netfilter: ipv6: add IPv6 NAT support") Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * | netfilter: ipt_CLUSTERIP: put config instead of freeing itFlorian Westphal2018-02-251-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Once struct is added to per-netns list it becomes visible to other cpus, so we cannot use kfree(). Also delay setting entries refcount to 1 until after everything is initialised so that when we call clusterip_config_put() in this spot entries is still zero. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| | * | netfilter: ipt_CLUSTERIP: put config struct if we can't increment ct refcountFlorian Westphal2018-02-251-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This needs to put() the entry to avoid a resource leak in error path. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| * | | Merge tag 'mac80211-for-davem-2018-03-02' of ↵David S. Miller2018-03-023-9/+14
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211 Johannes Berg says: ==================== Three more patches: * fix for a regression in 4-addr mode with fast-RX * fix for a Kconfig problem with the new regdb * fix for the long-standing TCP performance issue in wifi using the new sk_pacing_shift_update() ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | | cfg80211: add missing dependency to CFG80211 suboptionsRomain Naour2018-02-271-8/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | New options introduced by the patch this fixes are still enabled even if CFG80211 is disabled. .config: # CONFIG_CFG80211 is not set CONFIG_CFG80211_REQUIRE_SIGNED_REGDB=y CONFIG_CFG80211_USE_KERNEL_REGDB_KEYS=y # CONFIG_LIB80211 is not set When CFG80211_REQUIRE_SIGNED_REGDB is enabled, it selects SYSTEM_DATA_VERIFICATION which selects SYSTEM_TRUSTED_KEYRING that need extract-cert tool. extract-cert needs some openssl headers to be installed on the build machine. Instead of adding missing "depends on CFG80211", it's easier to use a 'if' block around all options related to CFG80211, so do that. Fixes: 90a53e4432b1 ("cfg80211: implement regdb signature checking") Signed-off-by: Romain Naour <romain.naour@gmail.com> [touch up commit message a bit] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| | * | | mac80211: drop frames with unexpected DS bits from fast-rx to slow pathFelix Fietkau2018-02-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes rx for 4-addr packets in AP mode. These may be used for setting up a 4-addr link for stations that are allowed to do so. Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| | * | | mac80211: Adjust TSQ pacing shiftToke Høiland-Jørgensen2018-02-231-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since we now have the convenient helper to do so, actually adjust the TSQ pacing shift for packets going out over a WiFi interface. This significantly improves throughput for locally-originated TCP connections. The default pacing shift of 10 corresponds to ~1ms of queued packet data. Adjusting this to a shift of 8 (i.e. ~4ms) improves 1-hop throughput for ath9k by a factor of 3, whereas increasing it more has diminishing returns. Achieved throughput for different values of sk_pacing_shift (average of 5 iterations of 10-sec netperf runs to a host on the other side of the WiFi hop): sk_pacing_shift 10: 43.21 Mbps (pre-patch) sk_pacing_shift 9: 78.17 Mbps sk_pacing_shift 8: 123.94 Mbps sk_pacing_shift 7: 128.31 Mbps Latency for competing flows increases from ~3 ms to ~10 ms with this change. This is about the same magnitude of queueing latency induced by flows that are not originated on the WiFi device itself (and so are not limited by TSQ). Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| * | | | rds: Incorrect reference counting in TCP socket creationKa-Cheong Poon2018-03-021-3/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 0933a578cd55 ("rds: tcp: use sock_create_lite() to create the accept socket") has a reference counting issue in TCP socket creation when accepting a new connection. The code uses sock_create_lite() to create a kernel socket. But it does not do __module_get() on the socket owner. When the connection is shutdown and sock_release() is called to free the socket, the owner's reference count is decremented and becomes incorrect. Note that this bug only shows up when the socket owner is configured as a kernel module. v2: Update comments Fixes: 0933a578cd55 ("rds: tcp: use sock_create_lite() to create the accept socket") Signed-off-by: Ka-Cheong Poon <ka-cheong.poon@oracle.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Acked-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | net: ethtool: don't ignore return from driver get_fecparam methodEdward Cree2018-03-011-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If ethtool_ops->get_fecparam returns an error, pass that error on to the user, rather than ignoring it. Fixes: 1a5f3da20bd9 ("net: ethtool: add support for forward error correction modes") Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | vrf: check forwarding on the original netdevice when generating ICMP dest ↵Stephen Suryaputra2018-03-011-1/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | unreachable When ip_error() is called the device is the l3mdev master instead of the original device. So the forwarding check should be on the original one. Changes from v2: - Handle the original device disappearing (per David Ahern) - Minimize the change in code order Changes from v1: - Only need to reset the device on which __in_dev_get_rcu() is done (per David Ahern). Signed-off-by: Stephen Suryaputra <ssuryaextr@gmail.com> Acked-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | net: allow interface to be set into VRF if VLAN interface in same VRFMike Manning2018-03-011-5/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Setting an interface into a VRF fails with 'RTNETLINK answers: File exists' if one of its VLAN interfaces is already in the same VRF. As the VRF is an upper device of the VLAN interface, it is also showing up as an upper device of the interface itself. The solution is to restrict this check to devices other than master. As only one master device can be linked to a device, the check in this case is that the upper device (VRF) being linked to is not the same as the master device instead of it not being any one of the upper devices. The following example shows an interface ens12 (with a VLAN interface ens12.10) being set into VRF green, which behaves as expected: # ip link add link ens12 ens12.10 type vlan id 10 # ip link set dev ens12 master vrfgreen # ip link show dev ens12 3: ens12: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master vrfgreen state UP mode DEFAULT group default qlen 1000 link/ether 52:54:00:4c:a0:45 brd ff:ff:ff:ff:ff:ff But if the VLAN interface has previously been set into the same VRF, then setting the interface into the VRF fails: # ip link set dev ens12 nomaster # ip link set dev ens12.10 master vrfgreen # ip link show dev ens12.10 39: ens12.10@ens12: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vrfgreen state UP mode DEFAULT group default qlen 1000 link/ether 52:54:00:4c:a0:45 brd ff:ff:ff:ff:ff:ff # ip link set dev ens12 master vrfgreen RTNETLINK answers: File exists The workaround is to move the VLAN interface back into the default VRF beforehand, but it has to be shut first so as to avoid the risk of traffic leaking from the VRF. This fix avoids needing this workaround. Signed-off-by: Mike Manning <mmanning@att.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | net: ipv4: avoid unused variable warning for sysctlArnd Bergmann2018-03-011-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The newly introudced ip_min_valid_pmtu variable is only used when CONFIG_SYSCTL is set: net/ipv4/route.c:135:12: error: 'ip_min_valid_pmtu' defined but not used [-Werror=unused-variable] This moves it to the other variables like it, to avoid the harmless warning. Fixes: c7272c2f1229 ("net: ipv4: don't allow setting net.ipv4.route.min_pmtu below 68") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | mlxsw: spectrum: Fix handling of resource_size_paramJiri Pirko2018-02-281-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Current code uses global variables, adjusts them and passes pointer down to devlink. With every other mlxsw_core instance, the previously passed pointer values are rewritten. Fix this by de-globalize the variables and also memcpy size_params during devlink resource registration. Also, introduce a convenient size_param_init helper. Fixes: ef3116e5403e ("mlxsw: spectrum: Register KVD resources with devlink") Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | net/smc: fix NULL pointer dereference on sock_create_kern() error pathDavide Caratti2018-02-281-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | when sock_create_kern(..., a) returns an error, 'a' might not be a valid pointer, so it shouldn't be dereferenced to read a->sk->sk_sndbuf and and a->sk->sk_rcvbuf; not doing that caused the following crash: general protection fault: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 4254 Comm: syzkaller919713 Not tainted 4.16.0-rc1+ #18 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:smc_create+0x14e/0x300 net/smc/af_smc.c:1410 RSP: 0018:ffff8801b06afbc8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff8801b63457c0 RCX: ffffffff85a3e746 RDX: 0000000000000004 RSI: 00000000ffffffff RDI: 0000000000000020 RBP: ffff8801b06afbf0 R08: 00000000000007c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8801b6345c08 R14: 00000000ffffffe9 R15: ffffffff8695ced0 FS: 0000000001afb880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000040 CR3: 00000001b0721004 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __sock_create+0x4d4/0x850 net/socket.c:1285 sock_create net/socket.c:1325 [inline] SYSC_socketpair net/socket.c:1409 [inline] SyS_socketpair+0x1c0/0x6f0 net/socket.c:1366 do_syscall_64+0x282/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x26/0x9b RIP: 0033:0x4404b9 RSP: 002b:00007fff44ab6908 EFLAGS: 00000246 ORIG_RAX: 0000000000000035 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004404b9 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 000000000000002b RBP: 00007fff44ab6910 R08: 0000000000000002 R09: 00007fff44003031 R10: 0000000020000040 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000 Code: 48 c1 ea 03 80 3c 02 00 0f 85 b3 01 00 00 4c 8b a3 48 04 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 20 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 82 01 00 00 4d 8b 7c 24 20 48 b8 00 00 00 00 RIP: smc_create+0x14e/0x300 net/smc/af_smc.c:1410 RSP: ffff8801b06afbc8 Fixes: cd6851f30386 smc: remote memory buffers (RMBs) Reported-and-tested-by: syzbot+aa0227369be2dcc26ebe@syzkaller.appspotmail.com Signed-off-by: Davide Caratti <dcaratti@redhat.com> Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | net/smc: use link_id of server in confirm link replyKarsten Graul2018-02-282-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The CONFIRM LINK reply message must contain the link_id sent by the server. And set the link_id explicitly when initializing the link. Signed-off-by: Karsten Graul <kgraul@linux.vnet.ibm.com> Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | net/smc: use a constant for control message lengthKarsten Graul2018-02-282-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The sizeof(struct smc_cdc_msg) evaluates to 48 bytes instead of the required 44 bytes. We need to use the constant value of SMC_WR_TX_SIZE to set and check the control message length. Signed-off-by: Karsten Graul <kgraul@linux.vnet.ibm.com> Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | net/tcp/illinois: replace broken algorithm reference linkJoey Pabalinas2018-02-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The link to the pdf containing the algorithm description is now a dead link; it seems http://www.ifp.illinois.edu/~srikant/ has been moved to https://sites.google.com/a/illinois.edu/srikant/ and none of the original papers can be found there... I have replaced it with the only working copy I was able to find. n.b. there is also a copy available at: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.296.6350&rep=rep1&type=pdf However, this seems to only be a *cached* version, so I am unsure exactly how reliable that link can be expected to remain over time and have decided against using that one. Signed-off-by: Joey Pabalinas <joeypabalinas@gmail.com> 1 file changed, 1 insertion(+), 1 deletion(-) Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | tcp: purge write queue upon RSTSoheil Hassas Yeganeh2018-02-281-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the connection is reset, there is no point in keeping the packets on the write queue until the connection is closed. RFC 793 (page 70) and RFC 793-bis (page 64) both suggest purging the write queue upon RST: https://tools.ietf.org/html/draft-ietf-tcpm-rfc793bis-07 Moreover, this is essential for a correct MSG_ZEROCOPY implementation, because userspace cannot call close(fd) before receiving zerocopy signals even when the connection is reset. Fixes: f214f915e7db ("tcp: enable MSG_ZEROCOPY") Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | tcp: revert F-RTO extension to detect more spurious timeoutsYuchung Cheng2018-02-281-18/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 89fe18e44f7ee5ab1c90d0dff5835acee7751427. While the patch could detect more spurious timeouts, it could cause poor TCP performance on broken middle-boxes that modifies TCP packets (e.g. receive window, SACK options). Since the performance gain is much smaller compared to the potential loss. The best solution is to fully revert the change. Fixes: 89fe18e44f7e ("tcp: extend F-RTO to catch more spurious timeouts") Reported-by: Teodor Milkov <tm@del.bg> Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | tcp: revert F-RTO middle-box workaroundYuchung Cheng2018-02-281-10/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit cc663f4d4c97b7297fb45135ab23cfd508b35a77. While fixing some broken middle-boxes that modifies receive window fields, it does not address middle-boxes that strip off SACK options. The best solution is to fully revert this patch and the root F-RTO enhancement. Fixes: cc663f4d4c97 ("tcp: restrict F-RTO to work-around broken middle-boxes") Reported-by: Teodor Milkov <tm@del.bg> Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | tls: Use correct sk->sk_prot for IPV6Boris Pismenny2018-02-271-15/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The tls ulp overrides sk->prot with a new tls specific proto structs. The tls specific structs were previously based on the ipv4 specific tcp_prot sturct. As a result, attaching the tls ulp to an ipv6 tcp socket replaced some ipv6 callback with the ipv4 equivalents. This patch adds ipv6 tls proto structs and uses them when attached to ipv6 sockets. Fixes: 3c4d7559159b ('tls: kernel TLS support') Signed-off-by: Boris Pismenny <borisp@mellanox.com> Signed-off-by: Ilya Lesokhin <ilyal@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | sit: fix IFLA_MTU ignored on NEWLINKXin Long2018-02-271-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 128bb975dc3c ("ip6_gre: init dev->mtu and dev->hard_header_len correctly") fixed IFLA_MTU ignored on NEWLINK for ip6_gre. The same mtu fix is also needed for sit. Note that dev->hard_header_len setting for sit works fine, no need to fix it. sit is actually ipv4 tunnel, it can't call ip6_tnl_change_mtu to set mtu. Reported-by: Jianlin Shi <jishi@redhat.com> Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | ip6_tunnel: fix IFLA_MTU ignored on NEWLINKXin Long2018-02-271-4/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 128bb975dc3c ("ip6_gre: init dev->mtu and dev->hard_header_len correctly") fixed IFLA_MTU ignored on NEWLINK for ip6_gre. The same mtu fix is also needed for ip6_tunnel. Note that dev->hard_header_len setting for ip6_tunnel works fine, no need to fix it. Reported-by: Jianlin Shi <jishi@redhat.com> Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | ip_gre: fix IFLA_MTU ignored on NEWLINKXin Long2018-02-271-5/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's safe to remove the setting of dev's needed_headroom and mtu in __gre_tunnel_init, as discussed in [1], ip_tunnel_newlink can do it properly. Now Eric noticed that it could cover the mtu value set in do_setlink when creating a ip_gre dev. It makes IFLA_MTU param not take effect. So this patch is to remove them to make IFLA_MTU work, as in other ipv4 tunnels. [1]: https://patchwork.ozlabs.org/patch/823504/ Fixes: c54419321455 ("GRE: Refactor GRE tunneling code.") Reported-by: Eric Garver <e@erig.me> Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | tipc: correct initial value for group congestion flagJon Maloy2018-02-272-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In commit 60c253069632 ("tipc: fix race between poll() and setsockopt()") we introduced a pointer from struct tipc_group to the 'group_is_connected' flag in struct tipc_sock, so that this field can be checked without dereferencing the group pointer of the latter struct. The initial value for this flag is correctly set to 'false' when a group is created, but we miss the case when no group is created at all, in which case the initial value should be 'true'. This has the effect that SOCK_RDM/DGRAM sockets sending datagrams never receive POLLOUT if they request so. This commit corrects this bug. Fixes: 60c253069632 ("tipc: fix race between poll() and setsockopt()") Reported-by: Hoang Le <hoang.h.le@dektek.com.au> Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
generated by cgit (git 2.34.1) at 2025-02-25 21:53:14 +0000