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2020-08-23treewide: Use fallthrough pseudo-keywordGustavo A. R. Silva1-1/+1
Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
2020-08-20net/sched: act_ct: Fix skb double-free in tcf_ct_handle_fragments() error flowAlaa Hleihel1-1/+1
tcf_ct_handle_fragments() shouldn't free the skb when ip_defrag() call fails. Otherwise, we will cause a double-free bug. In such cases, just return the error to the caller. Fixes: b57dc7c13ea9 ("net/sched: Introduce action ct") Signed-off-by: Alaa Hleihel <alaa@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-08-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextLinus Torvalds34-99/+304
Pull networking updates from David Miller: 1) Support 6Ghz band in ath11k driver, from Rajkumar Manoharan. 2) Support UDP segmentation in code TSO code, from Eric Dumazet. 3) Allow flashing different flash images in cxgb4 driver, from Vishal Kulkarni. 4) Add drop frames counter and flow status to tc flower offloading, from Po Liu. 5) Support n-tuple filters in cxgb4, from Vishal Kulkarni. 6) Various new indirect call avoidance, from Eric Dumazet and Brian Vazquez. 7) Fix BPF verifier failures on 32-bit pointer arithmetic, from Yonghong Song. 8) Support querying and setting hardware address of a port function via devlink, use this in mlx5, from Parav Pandit. 9) Support hw ipsec offload on bonding slaves, from Jarod Wilson. 10) Switch qca8k driver over to phylink, from Jonathan McDowell. 11) In bpftool, show list of processes holding BPF FD references to maps, programs, links, and btf objects. From Andrii Nakryiko. 12) Several conversions over to generic power management, from Vaibhav Gupta. 13) Add support for SO_KEEPALIVE et al. to bpf_setsockopt(), from Dmitry Yakunin. 14) Various https url conversions, from Alexander A. Klimov. 15) Timestamping and PHC support for mscc PHY driver, from Antoine Tenart. 16) Support bpf iterating over tcp and udp sockets, from Yonghong Song. 17) Support 5GBASE-T i40e NICs, from Aleksandr Loktionov. 18) Add kTLS RX HW offload support to mlx5e, from Tariq Toukan. 19) Fix the ->ndo_start_xmit() return type to be netdev_tx_t in several drivers. From Luc Van Oostenryck. 20) XDP support for xen-netfront, from Denis Kirjanov. 21) Support receive buffer autotuning in MPTCP, from Florian Westphal. 22) Support EF100 chip in sfc driver, from Edward Cree. 23) Add XDP support to mvpp2 driver, from Matteo Croce. 24) Support MPTCP in sock_diag, from Paolo Abeni. 25) Commonize UDP tunnel offloading code by creating udp_tunnel_nic infrastructure, from Jakub Kicinski. 26) Several pci_ --> dma_ API conversions, from Christophe JAILLET. 27) Add FLOW_ACTION_POLICE support to mlxsw, from Ido Schimmel. 28) Add SK_LOOKUP bpf program type, from Jakub Sitnicki. 29) Refactor a lot of networking socket option handling code in order to avoid set_fs() calls, from Christoph Hellwig. 30) Add rfc4884 support to icmp code, from Willem de Bruijn. 31) Support TBF offload in dpaa2-eth driver, from Ioana Ciornei. 32) Support XDP_REDIRECT in qede driver, from Alexander Lobakin. 33) Support PCI relaxed ordering in mlx5 driver, from Aya Levin. 34) Support TCP syncookies in MPTCP, from Flowian Westphal. 35) Fix several tricky cases of PMTU handling wrt. briding, from Stefano Brivio. * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2056 commits) net: thunderx: initialize VF's mailbox mutex before first usage usb: hso: remove bogus check for EINPROGRESS usb: hso: no complaint about kmalloc failure hso: fix bailout in error case of probe ip_tunnel_core: Fix build for archs without _HAVE_ARCH_IPV6_CSUM selftests/net: relax cpu affinity requirement in msg_zerocopy test mptcp: be careful on subflow creation selftests: rtnetlink: make kci_test_encap() return sub-test result selftests: rtnetlink: correct the final return value for the test net: dsa: sja1105: use detected device id instead of DT one on mismatch tipc: set ub->ifindex for local ipv6 address ipv6: add ipv6_dev_find() net: openvswitch: silence suspicious RCU usage warning Revert "vxlan: fix tos value before xmit" ptp: only allow phase values lower than 1 period farsync: switch from 'pci_' to 'dma_' API wan: wanxl: switch from 'pci_' to 'dma_' API hv_netvsc: do not use VF device if link is down dpaa2-eth: Fix passing zero to 'PTR_ERR' warning net: macb: Properly handle phylink on at91sam9x ...
2020-08-04Merge tag 'uninit-macro-v5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linuxLinus Torvalds8-8/+8
Pull uninitialized_var() macro removal from Kees Cook: "This is long overdue, and has hidden too many bugs over the years. The series has several "by hand" fixes, and then a trivial treewide replacement. - Clean up non-trivial uses of uninitialized_var() - Update documentation and checkpatch for uninitialized_var() removal - Treewide removal of uninitialized_var()" * tag 'uninit-macro-v5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: compiler: Remove uninitialized_var() macro treewide: Remove uninitialized_var() usage checkpatch: Remove awareness of uninitialized_var() macro mm/debug_vm_pgtable: Remove uninitialized_var() usage f2fs: Eliminate usage of uninitialized_var() macro media: sur40: Remove uninitialized_var() usage KVM: PPC: Book3S PR: Remove uninitialized_var() usage clk: spear: Remove uninitialized_var() usage clk: st: Remove uninitialized_var() usage spi: davinci: Remove uninitialized_var() usage ide: Remove uninitialized_var() usage rtlwifi: rtl8192cu: Remove uninitialized_var() usage b43: Remove uninitialized_var() usage drbd: Remove uninitialized_var() usage x86/mm/numa: Remove uninitialized_var() usage docs: deprecated.rst: Add uninitialized_var()
2020-08-03net/sched: act_ct: fix miss set mru for ovs after defrag in act_ctwenxu2-2/+7
When openvswitch conntrack offload with act_ct action. Fragment packets defrag in the ingress tc act_ct action and miss the next chain. Then the packet pass to the openvswitch datapath without the mru. The over mtu packet will be dropped in output action in openvswitch for over mtu. "kernel: net2: dropped over-mtu packet: 1528 > 1500" This patch add mru in the tc_skb_ext for adefrag and miss next chain situation. And also add mru in the qdisc_skb_cb. The act_ct set the mru to the qdisc_skb_cb when the packet defrag. And When the chain miss, The mru is set to tc_skb_ext which can be got by ovs datapath. Fixes: b57dc7c13ea9 ("net/sched: Introduce action ct") Signed-off-by: wenxu <wenxu@ucloud.cn> Reviewed-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-08-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller1-2/+2
Resolved kernel/bpf/btf.c using instructions from merge commit 69138b34a7248d2396ab85c8652e20c0c39beaba Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-31net/sched: cls_u32: Use struct_size() helperGustavo A. R. Silva1-14/+6
Make use of the struct_size() helper, in multiple places, instead of an open-coded version in order to avoid any potential type mistakes and protect against potential integer overflows. Also, remove unnecessary object identifier size. Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-31net/sched: The error lable position is corrected in ct_init_moduleliujian1-2/+2
Exchange the positions of the err_tbl_init and err_register labels in ct_init_module function. Fixes: c34b961a2492 ("net/sched: act_ct: Create nf flow table per zone") Signed-off-by: liujian <liujian56@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-30net/sched: act_pedit: Use flex_array_size() helper in memcpy()Gustavo A. R. Silva1-2/+1
Make use of the flex_array_size() helper to calculate the size of a flexible array member within an enclosing structure. This helper offers defense-in-depth against potential integer overflows, while at the same time makes it explicitly clear that we are dealing with a flexible array member. Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28net_sched: initialize timer earlier in red_init()Cong Wang1-4/+4
When red_init() fails, red_destroy() is called to clean up. If the timer is not initialized yet, del_timer_sync() will complain. So we have to move timer_setup() before any failure. Reported-and-tested-by: syzbot+6e95a4fabf88dc217145@syzkaller.appspotmail.com Fixes: aee9caa03fc3 ("net: sched: sch_red: Add qevents "early_drop" and "mark"") Cc: Petr Machata <petrm@mellanox.com> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Reviewed-by: Petr Machata <petrm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller2-3/+14
The UDP reuseport conflict was a little bit tricky. The net-next code, via bpf-next, extracted the reuseport handling into a helper so that the BPF sk lookup code could invoke it. At the same time, the logic for reuseport handling of unconnected sockets changed via commit efc6b6f6c3113e8b203b9debfb72d81e0f3dcace which changed the logic to carry on the reuseport result into the rest of the lookup loop if we do not return immediately. This requires moving the reuseport_has_conns() logic into the callers. While we are here, get rid of inline directives as they do not belong in foo.c files. The other changes were cases of more straightforward overlapping modifications. Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-24net/sched: cls_flower: Add hash info to flow classificationAriel Levkovich1-0/+16
Adding new cls flower keys for hash value and hash mask and dissect the hash info from the skb into the flow key towards flow classication. Signed-off-by: Ariel Levkovich <lariel@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-24flow_offload: Move rhashtable inclusion to the source fileHerbert Xu1-1/+0
I noticed that touching linux/rhashtable.h causes lib/vsprintf.c to be rebuilt. This dependency came through a bogus inclusion in the file net/flow_offload.h. This patch moves it to the right place. This patch also removes a lingering rhashtable inclusion in cls_api created by the same commit. Fixes: 4e481908c51b ("flow_offload: move tc indirect block to...") Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20net/sched: act_ct: fix restore the qdisc_skb_cb after defragwenxu1-2/+14
The fragment packets do defrag in tcf_ct_handle_fragments will clear the skb->cb which make the qdisc_skb_cb clear too. So the qdsic_skb_cb should be store before defrag and restore after that. It also update the pkt_len after all the fragments finish the defrag to one packet and make the following actions counter correct. Fixes: b57dc7c13ea9 ("net/sched: Introduce action ct") Signed-off-by: wenxu <wenxu@ucloud.cn> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sched: sch_api: add missing rcu read lock to silence the warningJiri Pirko1-1/+2
In case the qdisc_match_from_root function() is called from non-rcu path with rtnl mutex held, a suspiciout rcu usage warning appears: [ 241.504354] ============================= [ 241.504358] WARNING: suspicious RCU usage [ 241.504366] 5.8.0-rc4-custom-01521-g72a7c7d549c3 #32 Not tainted [ 241.504370] ----------------------------- [ 241.504378] net/sched/sch_api.c:270 RCU-list traversed in non-reader section!! [ 241.504382] other info that might help us debug this: [ 241.504388] rcu_scheduler_active = 2, debug_locks = 1 [ 241.504394] 1 lock held by tc/1391: [ 241.504398] #0: ffffffff85a27850 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x49a/0xbd0 [ 241.504431] stack backtrace: [ 241.504440] CPU: 0 PID: 1391 Comm: tc Not tainted 5.8.0-rc4-custom-01521-g72a7c7d549c3 #32 [ 241.504446] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-2.fc32 04/01/2014 [ 241.504453] Call Trace: [ 241.504465] dump_stack+0x100/0x184 [ 241.504482] lockdep_rcu_suspicious+0x153/0x15d [ 241.504499] qdisc_match_from_root+0x293/0x350 Fix this by passing the rtnl held lockdep condition down to hlist_for_each_entry_rcu() Reported-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-16Revert "net: sched: Pass root lock to Qdisc_ops.enqueue"Petr Machata33-67/+67
This reverts commit aebe4426ccaa4838f36ea805cdf7d76503e65117. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-07-16net: sched: Do not drop root lock in tcf_qevent_handle()Petr Machata2-10/+4
Mirred currently does not mix well with blocks executed after the qdisc root lock is taken. This includes classification blocks (such as in PRIO, ETS, DRR qdiscs) and qevents. The locking caused by the packet mirrored by mirred can cause deadlocks: either when the thread of execution attempts to take the lock a second time, or when two threads end up waiting on each other's locks. The qevent patchset attempted to not introduce further badness of this sort, and dropped the lock before executing the qevent block. However this lead to too little locking and races between qdisc configuration and packet enqueue in the RED qdisc. Before the deadlock issues are solved in a way that can be applied across many qdiscs reasonably easily, do for qevents what is done for the classification blocks and just keep holding the root lock. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-07-16treewide: Remove uninitialized_var() usageKees Cook8-8/+8
Using uninitialized_var() is dangerous as it papers over real bugs[1] (or can in the future), and suppresses unrelated compiler warnings (e.g. "unused variable"). If the compiler thinks it is uninitialized, either simply initialize the variable or make compiler changes. In preparation for removing[2] the[3] macro[4], remove all remaining needless uses with the following script: git grep '\buninitialized_var\b' | cut -d: -f1 | sort -u | \ xargs perl -pi -e \ 's/\buninitialized_var\(([^\)]+)\)/\1/g; s:\s*/\* (GCC be quiet|to make compiler happy) \*/$::g;' drivers/video/fbdev/riva/riva_hw.c was manually tweaked to avoid pathological white-space. No outstanding warnings were found building allmodconfig with GCC 9.3.0 for x86_64, i386, arm64, arm, powerpc, powerpc64le, s390x, mips, sparc64, alpha, and m68k. [1] https://lore.kernel.org/lkml/20200603174714.192027-1-glider@google.com/ [2] https://lore.kernel.org/lkml/CA+55aFw+Vbj0i=1TGqCR5vQkCzWJ0QxK6CernOU6eedsudAixw@mail.gmail.com/ [3] https://lore.kernel.org/lkml/CA+55aFwgbgqhbp1fkxvRKEpzyR5J8n1vKT1VZdz9knmPuXhOeg@mail.gmail.com/ [4] https://lore.kernel.org/lkml/CA+55aFz2500WfbKXAx8s67wrm9=yVJu65TpLgN_ybYNv0VEOKA@mail.gmail.com/ Reviewed-by: Leon Romanovsky <leonro@mellanox.com> # drivers/infiniband and mlx4/mlx5 Acked-by: Jason Gunthorpe <jgg@mellanox.com> # IB Acked-by: Kalle Valo <kvalo@codeaurora.org> # wireless drivers Reviewed-by: Chao Yu <yuchao0@huawei.com> # erofs Signed-off-by: Kees Cook <keescook@chromium.org>
2020-07-13net: sched: Pass qdisc reference in struct flow_block_offloadPetr Machata1-7/+9
Previously, shared blocks were only relevant for the pseudo-qdiscs ingress and clsact. Recently, a qevent facility was introduced, which allows to bind blocks to well-defined slots of a qdisc instance. RED in particular got two qevents: early_drop and mark. Drivers that wish to offload these blocks will be sent the usual notification, and need to know which qdisc it is related to. To that end, extend flow_block_offload with a "sch" pointer, and initialize as appropriate. This prompts changes in the indirect block facility, which now tracks the scheduler in addition to the netdevice. Update signatures of several functions similarly. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-13net: sched: kerneldoc fixesAndrew Lunn2-2/+2
Simple fixes which require no deep knowledge of the code. Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Cong Wang <xiyou.wangcong@gmail.com> Cc: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-11Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller16-33/+40
All conflicts seemed rather trivial, with some guidance from Saeed Mameed on the tc_ct.c one. Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-09net_sched: fix a memory leak in atm_tc_init()Cong Wang1-4/+4
When tcf_block_get() fails inside atm_tc_init(), atm_tc_put() is called to release the qdisc p->link.q. But the flow->ref prevents it to do so, as the flow->ref is still zero. Fix this by moving the p->link.ref initialization before tcf_block_get(). Fixes: 6529eaba33f0 ("net: sched: introduce tcf block infractructure") Reported-and-tested-by: syzbot+d411cff6ab29cc2c311b@syzkaller.appspotmail.com Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-07net/sched: Use fallthrough pseudo-keywordGustavo A. R. Silva14-14/+15
Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/latest/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-07net/sched: act_ct: add miss tcf_lastuse_update.wenxu1-0/+2
When tcf_ct_act execute the tcf_lastuse_update should be update or the used stats never update filter protocol ip pref 3 flower chain 0 filter protocol ip pref 3 flower chain 0 handle 0x1 eth_type ipv4 dst_ip 1.1.1.1 ip_flags frag/firstfrag skip_hw not_in_hw action order 1: ct zone 1 nat pipe index 1 ref 1 bind 1 installed 103 sec used 103 sec Action statistics: Sent 151500 bytes 101 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 cookie 4519c04dc64a1a295787aab13b6a50fb Signed-off-by: wenxu <wenxu@ucloud.cn> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-03sched: consistently handle layer3 header accesses in the presence of VLANsToke Høiland-Jørgensen15-29/+34
There are a couple of places in net/sched/ that check skb->protocol and act on the value there. However, in the presence of VLAN tags, the value stored in skb->protocol can be inconsistent based on whether VLAN acceleration is enabled. The commit quoted in the Fixes tag below fixed the users of skb->protocol to use a helper that will always see the VLAN ethertype. However, most of the callers don't actually handle the VLAN ethertype, but expect to find the IP header type in the protocol field. This means that things like changing the ECN field, or parsing diffserv values, stops working if there's a VLAN tag, or if there are multiple nested VLAN tags (QinQ). To fix this, change the helper to take an argument that indicates whether the caller wants to skip the VLAN tags or not. When skipping VLAN tags, we make sure to skip all of them, so behaviour is consistent even in QinQ mode. To make the helper usable from the ECN code, move it to if_vlan.h instead of pkt_sched.h. v3: - Remove empty lines - Move vlan variable definitions inside loop in skb_protocol() - Also use skb_protocol() helper in IP{,6}_ECN_decapsulate() and bpf_skb_ecn_set_ce() v2: - Use eth_type_vlan() helper in skb_protocol() - Also fix code that reads skb->protocol directly - Change a couple of 'if/else if' statements to switch constructs to avoid calling the helper twice Reported-by: Ilya Ponetayev <i.ponetaev@ndmsystems.com> Fixes: d8b9605d2697 ("net: sched: fix skb->protocol use in case of accelerated vlan path") Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-01net: sched: Allow changing default qdisc to FQ-PIEDanny Lin1-0/+4
Similar to fq_codel and the other qdiscs that can set as default, fq_pie is also suitable for general use without explicit configuration, which makes it a valid choice for this. This is useful in situations where a painless out-of-the-box solution for reducing bufferbloat is desired but fq_codel is not necessarily the best choice. For example, fq_pie can be better for DASH streaming, but there could be more cases where it's the better choice of the two simple AQMs available in the kernel. Signed-off-by: Danny Lin <danny@kdrag0n.dev> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-29net:qos: police action offloading parameter 'burst' change to the original valuePo Liu1-1/+1
Since 'tcfp_burst' with TICK factor, driver side always need to recover it to the original value, this patch moves the generic calculation and recover to the 'burst' original value before offloading to device driver. Signed-off-by: Po Liu <po.liu@nxp.com> Acked-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-29net: sched: sch_red: Add qevents "early_drop" and "mark"Petr Machata1-2/+56
In order to allow acting on dropped and/or ECN-marked packets, add two new qevents to the RED qdisc: "early_drop" and "mark". Filters attached at "early_drop" block are executed as packets are early-dropped, those attached at the "mark" block are executed as packets are ECN-marked. Two new attributes are introduced: TCA_RED_EARLY_DROP_BLOCK with the block index for the "early_drop" qevent, and TCA_RED_MARK_BLOCK for the "mark" qevent. Absence of these attributes signifies "don't care": no block is allocated in that case, or the existing blocks are left intact in case of the change callback. For purposes of offloading, blocks attached to these qevents appear with newly-introduced binder types, FLOW_BLOCK_BINDER_TYPE_RED_EARLY_DROP and FLOW_BLOCK_BINDER_TYPE_RED_MARK. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-29net: sched: sch_red: Split init and change callbacksPetr Machata1-12/+30
In the following patches, RED will get two qevents. The implementation will be clearer if the callback for change is not a pure subset of the callback for init. Split the two and promote attribute parsing to the callbacks themselves from the common code, because it will be handy there. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-29net: sched: Introduce helpers for qevent blocksPetr Machata1-0/+119
Qevents are attach points for TC blocks, where filters can be put that are executed when "interesting events" take place in a qdisc. The data to keep and the functions to invoke to maintain a qevent will be largely the same between qevents. Therefore introduce sched-wide helpers for qevent management. Currently, similarly to ingress and egress blocks of clsact pseudo-qdisc, blocks attachment cannot be changed after the qdisc is created. To that end, add a helper tcf_qevent_validate_change(), which verifies whether block index attribute is not attached, or if it is, whether its value matches the current one (i.e. there is no material change). The function tcf_qevent_handle() should be invoked when qdisc hits the "interesting event" corresponding to a block. This function releases root lock for the duration of executing the attached filters, to allow packets generated through user actions (notably mirred) to be reinserted to the same qdisc tree. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-29net: sched: Pass root lock to Qdisc_ops.enqueuePetr Machata33-67/+67
A following patch introduces qevents, points in qdisc algorithm where packet can be processed by user-defined filters. Should this processing lead to a situation where a new packet is to be enqueued on the same port, holding the root lock would lead to deadlocks. To solve the issue, qevent handler needs to unlock and relock the root lock when necessary. To that end, add the root lock argument to the qdisc op enqueue, and propagate throughout. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller6-85/+127
Minor overlapping changes in xfrm_device.c, between the double ESP trailing bug fix setting the XFRM_INIT flag and the changes in net-next preparing for bonding encryption support. Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-25sch_cake: add RFC 8622 LE PHB support to CAKE diffserv handlingKevin Darbyshire-Bryant1-4/+4
Change tin mapping on diffserv3, 4 & 8 for LE PHB support, in essence making LE a member of the Bulk tin. Bulk has the least priority and minimum of 1/16th total bandwidth in the face of higher priority traffic. NB: Diffserv 3 & 4 swap tin 0 & 1 priorities from the default order as found in diffserv8, in case anyone is wondering why it looks a bit odd. Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk> [ reword commit message slightly ] Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-25sch_cake: fix a few style nitsToke Høiland-Jørgensen1-2/+2
I spotted a few nits when comparing the in-tree version of sch_cake with the out-of-tree one: A redundant error variable declaration shadowing an outer declaration, and an indentation alignment issue. Fix both of these. Fixes: 046f6fd5daef ("sched: Add Common Applications Kept Enhanced (cake) qdisc") Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-25sch_cake: don't call diffserv parsing code when it is not neededToke Høiland-Jørgensen1-4/+9
As a further optimisation of the diffserv parsing codepath, we can skip it entirely if CAKE is configured to neither use diffserv-based classification, nor to zero out the diffserv bits. Fixes: c87b4ecdbe8d ("sch_cake: Make sure we can write the IP header before changing DSCP bits") Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-25sch_cake: don't try to reallocate or unshare skb unconditionallyIlya Ponetayev1-11/+30
cake_handle_diffserv() tries to linearize mac and network header parts of skb and to make it writable unconditionally. In some cases it leads to full skb reallocation, which reduces throughput and increases CPU load. Some measurements of IPv4 forward + NAPT on MIPS router with 580 MHz single-core CPU was conducted. It appears that on kernel 4.9 skb_try_make_writable() reallocates skb, if skb was allocated in ethernet driver via so-called 'build skb' method from page cache (it was discovered by strange increase of kmalloc-2048 slab at first). Obtain DSCP value via read-only skb_header_pointer() call, and leave linearization only for DSCP bleaching or ECN CE setting. And, as an additional optimisation, skip diffserv parsing entirely if it is not needed by the current configuration. Fixes: c87b4ecdbe8d ("sch_cake: Make sure we can write the IP header before changing DSCP bits") Signed-off-by: Ilya Ponetayev <i.ponetaev@ndmsystems.com> [ fix a few style issues, reflow commit message ] Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-24net: qos: police action add index for tc flower offloadingPo Liu1-0/+1
Hardware device may include more than one police entry. Specifying the action's index make it possible for several tc filters to share the same police action when installing the filters. Propagate this index to device drivers through the flow offload intermediate representation, so that drivers could share a single hardware policer between multiple filters. v1->v2 changes: - Update the commit message suggest by Ido Schimmel <idosch@idosch.org> Signed-off-by: Po Liu <Po.Liu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-24net: qos: add tc police offloading action with max frame size limitPo Liu1-0/+1
Current police offloading support the 'burst'' and 'rate_bytes_ps'. Some hardware own the capability to limit the frame size. If the frame size larger than the setting, the frame would be dropped. For the police action itself already accept the 'mtu' parameter in tc command. But not extend to tc flower offloading. So extend 'mtu' to tc flower offloading. Signed-off-by: Po Liu <Po.Liu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-22tcindex_change: Remove redundant null checkGaurav Singh1-1/+1
arg cannot be NULL since its already being dereferenced before. Remove the redundant NULL check. Signed-off-by: Gaurav Singh <gaurav1086@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-20net: Add MODULE_DESCRIPTION entries to network modulesRob Gill3-0/+3
The user tool modinfo is used to get information on kernel modules, including a description where it is available. This patch adds a brief MODULE_DESCRIPTION to the following modules: 9p drop_monitor esp4_offload esp6_offload fou fou6 ila sch_fq sch_fq_codel sch_hhf Signed-off-by: Rob Gill <rrobgill@protonmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-20Remove redundant skb null checkGaurav Singh1-1/+1
Remove the redundant null check for skb. Signed-off-by: Gaurav Singh <gaurav1086@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-20Remove redundant condition in qdisc_graftGaurav Singh1-2/+1
parent cannot be NULL here since its in the else part of the if (parent == NULL) condition. Remove the extra check on parent pointer. Signed-off-by: Gaurav Singh <gaurav1086@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-19net/sched: cls_u32: Use struct_size() in kzalloc()Gustavo A. R. Silva1-3/+1
Make use of the struct_size() helper instead of an open-coded version in order to avoid any potential type mistakes. This code was detected with the help of Coccinelle and, audited and fixed manually. Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-19taprio: Use struct_size() in kzalloc()Gustavo A. R. Silva1-3/+2
Make use of the struct_size() helper instead of an open-coded version in order to avoid any potential type mistakes. Also, remove unnecessary variable _size_. This code was detected with the help of Coccinelle and, audited and fixed manually. Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-19net/sched: cls_api: fix nooffloaddevcnt warning dmesg logwenxu1-10/+14
The block->nooffloaddevcnt should always count for indr block. even the indr block offload successful. The representor maybe gone away and the ingress qdisc can work in software mode. block->nooffloaddevcnt warning with following dmesg log: [ 760.667058] ##################################################### [ 760.668186] ## TEST test-ecmp-add-vxlan-encap-disable-sriov.sh ## [ 760.669179] ##################################################### [ 761.780655] :test: Fedora 30 (Thirty) [ 761.783794] :test: Linux reg-r-vrt-018-180 5.7.0+ [ 761.822890] :test: NIC ens1f0 FW 16.26.6000 PCI 0000:81:00.0 DEVICE 0x1019 ConnectX-5 Ex [ 761.860244] mlx5_core 0000:81:00.0 ens1f0: Link up [ 761.880693] IPv6: ADDRCONF(NETDEV_CHANGE): ens1f0: link becomes ready [ 762.059732] mlx5_core 0000:81:00.1 ens1f1: Link up [ 762.234341] :test: unbind vfs of ens1f0 [ 762.257825] :test: Change ens1f0 eswitch (0000:81:00.0) mode to switchdev [ 762.291363] :test: unbind vfs of ens1f1 [ 762.306914] :test: Change ens1f1 eswitch (0000:81:00.1) mode to switchdev [ 762.309237] mlx5_core 0000:81:00.1: E-Switch: Disable: mode(LEGACY), nvfs(2), active vports(3) [ 763.282598] mlx5_core 0000:81:00.1: E-Switch: Supported tc offload range - chains: 4294967294, prios: 4294967295 [ 763.362825] mlx5_core 0000:81:00.1: MLX5E: StrdRq(1) RqSz(8) StrdSz(2048) RxCqeCmprss(0) [ 763.444465] mlx5_core 0000:81:00.1 ens1f1: renamed from eth0 [ 763.460088] mlx5_core 0000:81:00.1: MLX5E: StrdRq(1) RqSz(8) StrdSz(2048) RxCqeCmprss(0) [ 763.502586] mlx5_core 0000:81:00.1: MLX5E: StrdRq(1) RqSz(8) StrdSz(2048) RxCqeCmprss(0) [ 763.552429] ens1f1_0: renamed from eth0 [ 763.569569] mlx5_core 0000:81:00.1: E-Switch: Enable: mode(OFFLOADS), nvfs(2), active vports(3) [ 763.629694] ens1f1_1: renamed from eth1 [ 764.631552] IPv6: ADDRCONF(NETDEV_CHANGE): ens1f1_0: link becomes ready [ 764.670841] :test: unbind vfs of ens1f0 [ 764.681966] :test: unbind vfs of ens1f1 [ 764.726762] mlx5_core 0000:81:00.0 ens1f0: Link up [ 764.766511] mlx5_core 0000:81:00.1 ens1f1: Link up [ 764.797325] :test: Add multipath vxlan encap rule and disable sriov [ 764.798544] :test: config multipath route [ 764.812732] mlx5_core 0000:81:00.0: lag map port 1:2 port 2:2 [ 764.874556] mlx5_core 0000:81:00.0: modify lag map port 1:1 port 2:2 [ 765.603681] :test: OK [ 765.659048] IPv6: ADDRCONF(NETDEV_CHANGE): ens1f1_1: link becomes ready [ 765.675085] :test: verify rule in hw [ 765.694237] IPv6: ADDRCONF(NETDEV_CHANGE): ens1f0: link becomes ready [ 765.711892] IPv6: ADDRCONF(NETDEV_CHANGE): ens1f1: link becomes ready [ 766.979230] :test: OK [ 768.125419] :test: OK [ 768.127519] :test: - disable sriov ens1f1 [ 768.131160] pci 0000:81:02.2: Removing from iommu group 75 [ 768.132646] pci 0000:81:02.3: Removing from iommu group 76 [ 769.179749] mlx5_core 0000:81:00.1: E-Switch: Disable: mode(OFFLOADS), nvfs(2), active vports(3) [ 769.455627] mlx5_core 0000:81:00.0: modify lag map port 1:1 port 2:1 [ 769.703990] mlx5_core 0000:81:00.1: MLX5E: StrdRq(1) RqSz(8) StrdSz(2048) RxCqeCmprss(0) [ 769.988637] mlx5_core 0000:81:00.1 ens1f1: renamed from eth0 [ 769.990022] :test: - disable sriov ens1f0 [ 769.994922] pci 0000:81:00.2: Removing from iommu group 73 [ 769.997048] pci 0000:81:00.3: Removing from iommu group 74 [ 771.035813] mlx5_core 0000:81:00.0: E-Switch: Disable: mode(OFFLOADS), nvfs(2), active vports(3) [ 771.339091] ------------[ cut here ]------------ [ 771.340812] WARNING: CPU: 6 PID: 3448 at net/sched/cls_api.c:749 tcf_block_offload_unbind.isra.0+0x5c/0x60 [ 771.341728] Modules linked in: act_mirred act_tunnel_key cls_flower dummy vxlan ip6_udp_tunnel udp_tunnel sch_ingress nfsv3 nfs_acl nfs lockd grace fscache tun bridge stp llc sunrpc rdma_ucm rdma_cm iw_cm ib_cm mlx5_ib ib_uverbs ib_core mlx5_core intel_rapl_msr intel_rapl_common sb_edac x86_pkg_temp_thermal intel_powerclamp coretemp mlxfw act_ct nf_flow_table kvm_intel nf_nat kvm nf_conntrack irqbypass crct10dif_pclmul igb crc32_pclmul nf_defrag_ipv6 libcrc32c nf_defrag_ipv4 crc32c_intel ghash_clmulni_intel ptp ipmi_ssif intel_cstate pps_c ore ses intel_uncore mei_me iTCO_wdt joydev ipmi_si iTCO_vendor_support i2c_i801 enclosure mei ioatdma dca lpc_ich wmi ipmi_devintf pcspkr acpi_power_meter ipmi_msghandler acpi_pad ast i2c_algo_bit drm_vram_helper drm_kms_helper drm_ttm_helper ttm drm mpt3sas raid_class scsi_transport_sas [ 771.347818] CPU: 6 PID: 3448 Comm: test-ecmp-add-v Not tainted 5.7.0+ #1146 [ 771.348727] Hardware name: Supermicro SYS-2028TP-DECR/X10DRT-P, BIOS 2.0b 03/30/2017 [ 771.349646] RIP: 0010:tcf_block_offload_unbind.isra.0+0x5c/0x60 [ 771.350553] Code: 4a fd ff ff 83 f8 a1 74 0e 5b 4c 89 e7 5d 41 5c 41 5d e9 07 93 89 ff 8b 83 a0 00 00 00 8d 50 ff 89 93 a0 00 00 00 85 c0 75 df <0f> 0b eb db 0f 1f 44 00 00 41 57 41 56 41 55 41 89 cd 41 54 49 89 [ 771.352420] RSP: 0018:ffffb33144cd3b00 EFLAGS: 00010246 [ 771.353353] RAX: 0000000000000000 RBX: ffff8b37cf4b2800 RCX: 0000000000000000 [ 771.354294] RDX: 00000000ffffffff RSI: ffff8b3b9aad0000 RDI: ffffffff8d5c6e20 [ 771.355245] RBP: ffff8b37eb546948 R08: ffffffffc0b7a348 R09: ffff8b3b9aad0000 [ 771.356189] R10: 0000000000000001 R11: ffff8b3ba7a0a1c0 R12: ffff8b37cf4b2850 [ 771.357123] R13: ffff8b3b9aad0000 R14: ffff8b37cf4b2820 R15: ffff8b37cf4b2820 [ 771.358039] FS: 00007f8a19b6e740(0000) GS:ffff8b3befa00000(0000) knlGS:0000000000000000 [ 771.358965] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 771.359885] CR2: 00007f3afb91c1a0 CR3: 000000045133c004 CR4: 00000000001606e0 [ 771.360825] Call Trace: [ 771.361764] __tcf_block_put+0x84/0x150 [ 771.362712] ingress_destroy+0x1b/0x20 [sch_ingress] [ 771.363658] qdisc_destroy+0x3e/0xc0 [ 771.364594] dev_shutdown+0x7a/0xa5 [ 771.365522] rollback_registered_many+0x20d/0x530 [ 771.366458] ? netdev_upper_dev_unlink+0x15d/0x1c0 [ 771.367387] unregister_netdevice_many.part.0+0xf/0x70 [ 771.368310] vxlan_netdevice_event+0xa4/0x110 [vxlan] [ 771.369454] notifier_call_chain+0x4c/0x70 [ 771.370579] rollback_registered_many+0x2f5/0x530 [ 771.371719] rollback_registered+0x56/0x90 [ 771.372843] unregister_netdevice_queue+0x73/0xb0 [ 771.373982] unregister_netdev+0x18/0x20 [ 771.375168] mlx5e_vport_rep_unload+0x56/0xc0 [mlx5_core] [ 771.376327] esw_offloads_disable+0x81/0x90 [mlx5_core] [ 771.377512] mlx5_eswitch_disable_locked.cold+0xcb/0x1af [mlx5_core] [ 771.378679] mlx5_eswitch_disable+0x44/0x60 [mlx5_core] [ 771.379822] mlx5_device_disable_sriov+0xad/0xb0 [mlx5_core] [ 771.380968] mlx5_core_sriov_configure+0xc1/0xe0 [mlx5_core] [ 771.382087] sriov_numvfs_store+0xfc/0x130 [ 771.383195] kernfs_fop_write+0xce/0x1b0 [ 771.384302] vfs_write+0xb6/0x1a0 [ 771.385410] ksys_write+0x5f/0xe0 [ 771.386500] do_syscall_64+0x5b/0x1d0 [ 771.387569] entry_SYSCALL_64_after_hwframe+0x44/0xa9 Fixes: 0fdcf78d5973 ("net: use flow_indr_dev_setup_offload()") Signed-off-by: wenxu <wenxu@ucloud.cn> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-19net: flow_offload: fix flow_indr_dev_unregister pathwenxu1-0/+1
If the representor is removed, then identify the indirect flow_blocks that need to be removed by the release callback and the port representor structure. To identify the port representor structure, a new indr.cb_priv field needs to be introduced. The flow_block also needs to be removed from the driver list from the cleanup path. Fixes: 1fac52da5942 ("net: flow_offload: consolidate indirect flow_block infrastructure") Signed-off-by: wenxu <wenxu@ucloud.cn> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-19net: qos offload add flow status with dropped countPo Liu11-29/+31
This patch adds a drop frames counter to tc flower offloading. Reporting h/w dropped frames is necessary for some actions. Some actions like police action and the coming introduced stream gate action would produce dropped frames which is necessary for user. Status update shows how many filtered packets increasing and how many dropped in those packets. v2: Changes - Update commit comments suggest by Jiri Pirko. Signed-off-by: Po Liu <Po.Liu@nxp.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Vlad Buslov <vladbu@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-18net/sched: act_gate: fix configuration of the periodic timerDavide Caratti1-35/+55
assigning a dummy value of 'clock_id' to avoid cancellation of the cycle timer before its initialization was a temporary solution, and we still need to handle the case where act_gate timer parameters are changed by commands like the following one: # tc action replace action gate <parameters> the fix consists in the following items: 1) remove the workaround assignment of 'clock_id', and init the list of entries before the first error path after IDR atomic check/allocation 2) validate 'clock_id' earlier: there is no need to do IDR atomic check/allocation if we know that 'clock_id' is a bad value 3) use a dedicated function, 'gate_setup_timer()', to ensure that the timer is cancelled and re-initialized on action overwrite, and also ensure we initialize the timer in the error path of tcf_gate_init() v3: improve comment in the error path of tcf_gate_init() (thanks to Vladimir Oltean) v2: avoid 'goto' in gate_setup_timer (thanks to Cong Wang) CC: Ivan Vecera <ivecera@redhat.com> Fixes: a01c245438c5 ("net/sched: fix a couple of splats in the error path of tfc_gate_init()") Fixes: a51c328df310 ("net: qos: introduce a gate control flow action") Signed-off-by: Davide Caratti <dcaratti@redhat.com> Acked-by: Vladimir Oltean <vladimir.oltean@nxp.com> Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-18net/sched: act_gate: fix NULL dereference in tcf_gate_init()Davide Caratti1-23/+13
it is possible to see a KASAN use-after-free, immediately followed by a NULL dereference crash, with the following command: # tc action add action gate index 3 cycle-time 100000000ns \ > cycle-time-ext 100000000ns clockid CLOCK_TAI BUG: KASAN: use-after-free in tcf_action_init_1+0x8eb/0x960 Write of size 1 at addr ffff88810a5908bc by task tc/883 CPU: 0 PID: 883 Comm: tc Not tainted 5.7.0+ #188 Hardware name: Red Hat KVM, BIOS 1.11.1-4.module+el8.1.0+4066+0f1aadab 04/01/2014 Call Trace: dump_stack+0x75/0xa0 print_address_description.constprop.6+0x1a/0x220 kasan_report.cold.9+0x37/0x7c tcf_action_init_1+0x8eb/0x960 tcf_action_init+0x157/0x2a0 tcf_action_add+0xd9/0x2f0 tc_ctl_action+0x2a3/0x39d rtnetlink_rcv_msg+0x5f3/0x920 netlink_rcv_skb+0x120/0x380 netlink_unicast+0x439/0x630 netlink_sendmsg+0x714/0xbf0 sock_sendmsg+0xe2/0x110 ____sys_sendmsg+0x5b4/0x890 ___sys_sendmsg+0xe9/0x160 __sys_sendmsg+0xd3/0x170 do_syscall_64+0x9a/0x370 entry_SYSCALL_64_after_hwframe+0x44/0xa9 [...] KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077] CPU: 0 PID: 883 Comm: tc Tainted: G B 5.7.0+ #188 Hardware name: Red Hat KVM, BIOS 1.11.1-4.module+el8.1.0+4066+0f1aadab 04/01/2014 RIP: 0010:tcf_action_fill_size+0xa3/0xf0 [....] RSP: 0018:ffff88813a48f250 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: 0000000000000094 RCX: ffffffffa47c3eb6 RDX: 000000000000000e RSI: 0000000000000008 RDI: 0000000000000070 RBP: ffff88810a590800 R08: 0000000000000004 R09: ffffed1027491e03 R10: 0000000000000003 R11: ffffed1027491e03 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88810a590800 FS: 00007f62cae8ce40(0000) GS:ffff888147c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f62c9d20a10 CR3: 000000013a52a000 CR4: 0000000000340ef0 Call Trace: tcf_action_init+0x172/0x2a0 tcf_action_add+0xd9/0x2f0 tc_ctl_action+0x2a3/0x39d rtnetlink_rcv_msg+0x5f3/0x920 netlink_rcv_skb+0x120/0x380 netlink_unicast+0x439/0x630 netlink_sendmsg+0x714/0xbf0 sock_sendmsg+0xe2/0x110 ____sys_sendmsg+0x5b4/0x890 ___sys_sendmsg+0xe9/0x160 __sys_sendmsg+0xd3/0x170 do_syscall_64+0x9a/0x370 entry_SYSCALL_64_after_hwframe+0x44/0xa9 this is caused by the test on 'cycletime_ext', that is still unassigned when the action is newly created. This makes the action .init() return 0 without calling tcf_idr_insert(), hence the UAF + crash. rework the logic that prevents zero values of cycle-time, as follows: 1) 'tcfg_cycletime_ext' seems to be unused in the action software path, and it was already possible by other means to obtain non-zero cycletime and zero cycletime-ext. So, removing that test should not cause any damage. 2) while at it, we must prevent overwriting configuration data with wrong ones: use a temporary variable for 'tcfg_cycletime', and validate it preserving the original semantic (that allowed computing the cycle time as the sum of all intervals, when not specified by TCA_GATE_CYCLE_TIME). 3) remove the test on 'tcfg_cycletime', no more useful, and avoid returning -EFAULT, which did not seem an appropriate return value for a wrong netlink attribute. v3: fix uninitialized 'cycletime' (thanks to Vladimir Oltean) v2: remove useless 'return;' at the end of void gate_get_start_time() Fixes: a51c328df310 ("net: qos: introduce a gate control flow action") CC: Ivan Vecera <ivecera@redhat.com> Signed-off-by: Davide Caratti <dcaratti@redhat.com> Acked-by: Vladimir Oltean <vladimir.oltean@nxp.com> Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-15net/sched: act_ct: Make tcf_ct_flow_table_restore_skb inlineAlaa Hleihel1-11/+0
Currently, tcf_ct_flow_table_restore_skb is exported by act_ct module, therefore modules using it will have hard-dependency on act_ct and will require loading it all the time. This can lead to an unnecessary overhead on systems that do not use hardware connection tracking action (ct_metadata action) in the first place. To relax the hard-dependency between the modules, we unexport this function and make it a static inline one. Fixes: 30b0cf90c6dd ("net/sched: act_ct: Support restoring conntrack info on skbs") Signed-off-by: Alaa Hleihel <alaa@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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