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2020-12-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfDavid S. Miller
Pablo Neira Ayuso says: ==================== Netfilter fixes for net The following patchset contains Netfilter fixes for net: 1) Switch to RCU in x_tables to fix possible NULL pointer dereference, from Subash Abhinov Kasiviswanathan. 2) Fix netlink dump of dynset timeouts later than 23 days. 3) Add comment for the indirect serialization of the nft commit mutex with rtnl_mutex. 4) Remove bogus check for confirmed conntrack when matching on the conntrack ID, from Brett Mastbergen. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-12-09net: rxrpc: convert comma to semicolonZheng Yongjun
Replace a comma between expression statements by a semicolon. Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Reviewed-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-12-09tcp: fix cwnd-limited bug for TSO deferral where we send nothingNeal Cardwell
When cwnd is not a multiple of the TSO skb size of N*MSS, we can get into persistent scenarios where we have the following sequence: (1) ACK for full-sized skb of N*MSS arrives -> tcp_write_xmit() transmit full-sized skb with N*MSS -> move pacing release time forward -> exit tcp_write_xmit() because pacing time is in the future (2) TSQ callback or TCP internal pacing timer fires -> try to transmit next skb, but TSO deferral finds remainder of available cwnd is not big enough to trigger an immediate send now, so we defer sending until the next ACK. (3) repeat... So we can get into a case where we never mark ourselves as cwnd-limited for many seconds at a time, even with bulk/infinite-backlog senders, because: o In case (1) above, every time in tcp_write_xmit() we have enough cwnd to send a full-sized skb, we are not fully using the cwnd (because cwnd is not a multiple of the TSO skb size). So every time we send data, we are not cwnd limited, and so in the cwnd-limited tracking code in tcp_cwnd_validate() we mark ourselves as not cwnd-limited. o In case (2) above, every time in tcp_write_xmit() that we try to transmit the "remainder" of the cwnd but defer, we set the local variable is_cwnd_limited to true, but we do not send any packets, so sent_pkts is zero, so we don't call the cwnd-limited logic to update tp->is_cwnd_limited. Fixes: ca8a22634381 ("tcp: make cwnd-limited checks measurement-based, and gentler") Reported-by: Ingemar Johansson <ingemar.s.johansson@ericsson.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: Yuchung Cheng <ycheng@google.com> Acked-by: Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Link: https://lore.kernel.org/r/20201209035759.1225145-1-ncardwell.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-09net: flow_offload: Fix memory leak for indirect flow blockChris Mi
The offending commit introduces a cleanup callback that is invoked when the driver module is removed to clean up the tunnel device flow block. But it returns on the first iteration of the for loop. The remaining indirect flow blocks will never be freed. Fixes: 1fac52da5942 ("net: flow_offload: consolidate indirect flow_block infrastructure") CC: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Chris Mi <cmi@nvidia.com> Reviewed-by: Roi Dayan <roid@nvidia.com>
2020-12-09tcp: Retain ECT bits for tos reflectionWei Wang
For DCTCP, we have to retain the ECT bits set by the congestion control algorithm on the socket when reflecting syn TOS in syn-ack, in order to make ECN work properly. Fixes: ac8f1710c12b ("tcp: reflect tos value received in SYN to the socket") Reported-by: Alexander Duyck <alexanderduyck@fb.com> Signed-off-by: Wei Wang <weiwan@google.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-12-09ethtool: fix stack overflow in ethnl_parse_bitset()Michal Kubecek
Syzbot reported a stack overflow in bitmap_from_arr32() called from ethnl_parse_bitset() when bitset from netlink message is longer than target bitmap length. While ethnl_compact_sanity_checks() makes sure that trailing part is all zeros (i.e. the request does not try to touch bits kernel does not recognize), we also need to cap change_bits to nbits so that we don't try to write past the prepared bitmaps. Fixes: 88db6d1e4f62 ("ethtool: add ethnl_parse_bitset() helper") Reported-by: syzbot+9d39fa49d4df294aab93@syzkaller.appspotmail.com Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Link: https://lore.kernel.org/r/3487ee3a98e14cd526f55b6caaa959d2dcbcad9f.1607465316.git.mkubecek@suse.cz Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-09net: sched: incorrect Kconfig dependencies on Netfilter modulesPablo Neira Ayuso
- NET_ACT_CONNMARK and NET_ACT_CTINFO only require conntrack support. - NET_ACT_IPT only requires NETFILTER_XTABLES symbols, not IP_NF_IPTABLES. After this patch, NET_ACT_IPT becomes consistent with NET_EMATCH_IPT. NET_ACT_IPT dependency on IP_NF_IPTABLES predates Linux-2.6.12-rc2 (initial git repository build). Fixes: 22a5dc0e5e3e ("net: sched: Introduce connmark action") Fixes: 24ec483cec98 ("net: sched: Introduce act_ctinfo action") Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Link: https://lore.kernel.org/r/20201208204707.11268-1-pablo@netfilter.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-09can: isotp: isotp_setsockopt(): block setsockopt on bound socketsOliver Hartkopp
The isotp socket can be widely configured in its behaviour regarding addressing types, fill-ups, receive pattern tests and link layer length. Usually all these settings need to be fixed before bind() and can not be changed afterwards. This patch adds a check to enforce the common usage pattern. Fixes: e057dd3fc20f ("can: add ISO 15765-2:2016 transport protocol") Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Tested-by: Thomas Wagner <thwa1@web.de> Link: https://lore.kernel.org/r/20201203140604.25488-2-socketcan@hartkopp.net Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Link: https://lore.kernel.org/r/20201204133508.742120-3-mkl@pengutronix.de Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-09xdp: Remove the xdp_attachment_flags_ok() callbackToke Høiland-Jørgensen
Since commit 7f0a838254bd ("bpf, xdp: Maintain info on attached XDP BPF programs in net_device"), the XDP program attachment info is now maintained in the core code. This interacts badly with the xdp_attachment_flags_ok() check that prevents unloading an XDP program with different load flags than it was loaded with. In practice, two kinds of failures are seen: - An XDP program loaded without specifying a mode (and which then ends up in driver mode) cannot be unloaded if the program mode is specified on unload. - The dev_xdp_uninstall() hook always calls the driver callback with the mode set to the type of the program but an empty flags argument, which means the flags_ok() check prevents the program from being removed, leading to bpf prog reference leaks. The original reason this check was added was to avoid ambiguity when multiple programs were loaded. With the way the checks are done in the core now, this is quite simple to enforce in the core code, so let's add a check there and get rid of the xdp_attachment_flags_ok() callback entirely. Fixes: 7f0a838254bd ("bpf, xdp: Maintain info on attached XDP BPF programs in net_device") Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Jakub Kicinski <kuba@kernel.org> Link: https://lore.kernel.org/bpf/160752225751.110217.10267659521308669050.stgit@toke.dk
2020-12-09SUNRPC: Remove XDRBUF_SPARSE_PAGES flag in gss_proxy upcallChuck Lever
There's no need to defer allocation of pages for the receive buffer. - This upcall is quite infrequent - gssp_alloc_receive_pages() can allocate the pages with GFP_KERNEL, unlike the transport - gssp_alloc_receive_pages() knows exactly how many pages are needed Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Olga Kornievskaia <kolga@netapp.com>
2020-12-09sunrpc: clean-up cache downcallRoberto Bergantinos Corpas
We can simplify code around cache_downcall unifying memory allocations using kvmalloc. This has the benefit of getting rid of cache_slow_downcall (and queue_io_mutex), and also matches userland allocation size and limits. Signed-off-by: Roberto Bergantinos Corpas <rbergant@redhat.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-12-09netfilter: nft_ct: Remove confirmation check for NFT_CT_IDBrett Mastbergen
Since commit 656c8e9cc1ba ("netfilter: conntrack: Use consistent ct id hash calculation") the ct id will not change from initialization to confirmation. Removing the confirmation check allows for things like adding an element to a 'typeof ct id' set in prerouting upon reception of the first packet of a new connection, and then being able to reference that set consistently both before and after the connection is confirmed. Fixes: 656c8e9cc1ba ("netfilter: conntrack: Use consistent ct id hash calculation") Signed-off-by: Brett Mastbergen <brett.mastbergen@gmail.com> Acked-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2020-12-08bpf: Only provide bpf_sock_from_file with CONFIG_NETFlorent Revest
This moves the bpf_sock_from_file definition into net/core/filter.c which only gets compiled with CONFIG_NET and also moves the helper proto usage next to other tracing helpers that are conditional on CONFIG_NET. This avoids ld: kernel/trace/bpf_trace.o: in function `bpf_sock_from_file': bpf_trace.c:(.text+0xe23): undefined reference to `sock_from_file' When compiling a kernel with BPF and without NET. Reported-by: kernel test robot <lkp@intel.com> Reported-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Florent Revest <revest@chromium.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Martin KaFai Lau <kafai@fb.com> Acked-by: KP Singh <kpsingh@kernel.org> Link: https://lore.kernel.org/bpf/20201208173623.1136863-1-revest@chromium.org
2020-12-08tcp: select sane initial rcvq_space.space for big MSSEric Dumazet
Before commit a337531b942b ("tcp: up initial rmem to 128KB and SYN rwin to around 64KB") small tcp_rmem[1] values were overridden by tcp_fixup_rcvbuf() to accommodate various MSS. This is no longer the case, and Hazem Mohamed Abuelfotoh reported that DRS would not work for MTU 9000 endpoints receiving regular (1500 bytes) frames. Root cause is that tcp_init_buffer_space() uses tp->rcv_wnd for upper limit of rcvq_space.space computation, while it can select later a smaller value for tp->rcv_ssthresh and tp->window_clamp. ss -temoi on receiver would show : skmem:(r0,rb131072,t0,tb46080,f0,w0,o0,bl0,d0) rcv_space:62496 rcv_ssthresh:56596 This means that TCP can not increase its window in tcp_grow_window(), and that DRS can never kick. Fix this by making sure that rcvq_space.space is not bigger than number of bytes that can be held in TCP receive queue. People unable/unwilling to change their kernel can work around this issue by selecting a bigger tcp_rmem[1] value as in : echo "4096 196608 6291456" >/proc/sys/net/ipv4/tcp_rmem Based on an initial report and patch from Hazem Mohamed Abuelfotoh https://lore.kernel.org/netdev/20201204180622.14285-1-abuehaze@amazon.com/ Fixes: a337531b942b ("tcp: up initial rmem to 128KB and SYN rwin to around 64KB") Fixes: 041a14d26715 ("tcp: start receiver buffer autotuning sooner") Reported-by: Hazem Mohamed Abuelfotoh <abuehaze@amazon.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-12-08net: openvswitch: conntrack: simplify the return expression of ↵Zheng Yongjun
ovs_ct_limit_get_default_limit() Simplify the return expression. Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Reviewed-by: Eelco Chaudron <echaudro@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-12-08net: core: devlink: simplify the return expression of ↵Zheng Yongjun
devlink_nl_cmd_trap_set_doit() Simplify the return expression. Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-12-08net: ipv6: rpl_iptunnel: simplify the return expression of rpl_do_srh()Zheng Yongjun
Simplify the return expression. Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-12-08net/sched: cls_u32: simplify the return expression of u32_reoffload_knode()Zheng Yongjun
Simplify the return expression. Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-12-08net: sched: fix spelling mistake in Kconfig "trys" -> "tries"Colin Ian King
There is a spelling mistake in the Kconfig help text. Fix it. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-12-08Merge branch 'for-upstream' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next Johan Hedberg says: ==================== pull request: bluetooth-next 2020-12-07 Here's the main bluetooth-next pull request for the 5.11 kernel. - Updated Bluetooth entries in MAINTAINERS to include Luiz von Dentz - Added support for Realtek 8822CE and 8852A devices - Added support for MediaTek MT7615E device - Improved workarounds for fake CSR devices - Fix Bluetooth qualification test case L2CAP/COS/CFD/BV-14-C - Fixes for LL Privacy support - Enforce 16 byte encryption key size for FIPS security level - Added new mgmt commands for extended advertising support - Multiple other smaller fixes & improvements Please let me know if there are any issues pulling. Thanks. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-12-08net/af_iucv: use DECLARE_SOCKADDR to cast from sockaddrJulian Wiedmann
This gets us compile-time size checking. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-12-08net: tipc: prevent possible null deref of linkCengiz Can
`tipc_node_apply_property` does a null check on a `tipc_link_entry` pointer but also accesses the same pointer out of the null check block. This triggers a warning on Coverity Static Analyzer because we're implying that `e->link` can BE null. Move "Update MTU for node link entry" line into if block to make sure that we're not in a state that `e->link` is null. Signed-off-by: Cengiz Can <cengiz@kernel.wtf> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-12-08netfilter: nftables: comment indirect serialization of commit_mutex with ↵Pablo Neira Ayuso
rtnl_mutex Add an explicit comment in the code to describe the indirect serialization of the holders of the commit_mutex with the rtnl_mutex. Commit 90d2723c6d4c ("netfilter: nf_tables: do not hold reference on netdevice from preparation phase") already describes this, but a comment in this case is better for reference. Reported-by: Vladimir Oltean <olteanv@gmail.com> Reviewed-by: Vladimir Oltean <olteanv@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2020-12-08netfilter: nft_dynset: fix timeouts later than 23 daysPablo Neira Ayuso
Use nf_msecs_to_jiffies64 and nf_jiffies64_to_msecs as provided by 8e1102d5a159 ("netfilter: nf_tables: support timeouts larger than 23 days"), otherwise ruleset listing breaks. Fixes: a8b1e36d0d1d ("netfilter: nft_dynset: fix element timeout for HZ != 1000") Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2020-12-08net: dsa: print the MTU value that could not be setRasmus Villemoes
These warnings become somewhat more informative when they include the MTU value that could not be set and not just the errno. Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk> Link: https://lore.kernel.org/r/20201205133944.10182-1-rasmus.villemoes@prevas.dk Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-08xsk: Validate socket state in xsk_recvmsg, prior touching socket membersBjörn Töpel
In AF_XDP the socket state needs to be checked, prior touching the members of the socket. This was not the case for the recvmsg implementation. Fix that by moving the xsk_is_bound() call. Fixes: 45a86681844e ("xsk: Add support for recvmsg()") Reported-by: kernel test robot <oliver.sang@intel.com> Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Magnus Karlsson <magnus.karlsson@intel.com> Link: https://lore.kernel.org/bpf/20201207082008.132263-1-bjorn.topel@gmail.com
2020-12-08netfilter: x_tables: Switch synchronization to RCUSubash Abhinov Kasiviswanathan
When running concurrent iptables rules replacement with data, the per CPU sequence count is checked after the assignment of the new information. The sequence count is used to synchronize with the packet path without the use of any explicit locking. If there are any packets in the packet path using the table information, the sequence count is incremented to an odd value and is incremented to an even after the packet process completion. The new table value assignment is followed by a write memory barrier so every CPU should see the latest value. If the packet path has started with the old table information, the sequence counter will be odd and the iptables replacement will wait till the sequence count is even prior to freeing the old table info. However, this assumes that the new table information assignment and the memory barrier is actually executed prior to the counter check in the replacement thread. If CPU decides to execute the assignment later as there is no user of the table information prior to the sequence check, the packet path in another CPU may use the old table information. The replacement thread would then free the table information under it leading to a use after free in the packet processing context- Unable to handle kernel NULL pointer dereference at virtual address 000000000000008e pc : ip6t_do_table+0x5d0/0x89c lr : ip6t_do_table+0x5b8/0x89c ip6t_do_table+0x5d0/0x89c ip6table_filter_hook+0x24/0x30 nf_hook_slow+0x84/0x120 ip6_input+0x74/0xe0 ip6_rcv_finish+0x7c/0x128 ipv6_rcv+0xac/0xe4 __netif_receive_skb+0x84/0x17c process_backlog+0x15c/0x1b8 napi_poll+0x88/0x284 net_rx_action+0xbc/0x23c __do_softirq+0x20c/0x48c This could be fixed by forcing instruction order after the new table information assignment or by switching to RCU for the synchronization. Fixes: 80055dab5de0 ("netfilter: x_tables: make xt_replace_table wait until old rules are not used anymore") Reported-by: Sean Tranchetti <stranche@codeaurora.org> Reported-by: kernel test robot <lkp@intel.com> Suggested-by: Florian Westphal <fw@strlen.de> Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2020-12-07Merge branch 'master' of ↵Jakub Kicinski
git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec Steffen Klassert says: ==================== pull request (net): ipsec 2020-12-07 1) Sysbot reported fixes for the new 64/32 bit compat layer. From Dmitry Safonov. 2) Fix a memory leak in xfrm_user_policy that was introduced by adding the 64/32 bit compat layer. From Yu Kuai. * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec: net: xfrm: fix memory leak in xfrm_user_policy() xfrm/compat: Don't allocate memory with __GFP_ZERO xfrm/compat: memset(0) 64-bit padding at right place xfrm/compat: Translate by copying XFRMA_UNSPEC attribute ==================== Link: https://lore.kernel.org/r/20201207093937.2874932-1-steffen.klassert@secunet.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-07mptcp: print new line in mptcp_seq_show() if mptcp isn't in useJianguo Wu
When do cat /proc/net/netstat, the output isn't append with a new line, it looks like this: [root@localhost ~]# cat /proc/net/netstat ... MPTcpExt: 0 0 0 0 0 0 0 0 0 0 0 0 0[root@localhost ~]# This is because in mptcp_seq_show(), if mptcp isn't in use, net->mib.mptcp_statistics is NULL, so it just puts all 0 after "MPTcpExt:", and return, forgot the '\n'. After this patch: [root@localhost ~]# cat /proc/net/netstat ... MPTcpExt: 0 0 0 0 0 0 0 0 0 0 0 0 0 [root@localhost ~]# Fixes: fc518953bc9c8d7d ("mptcp: add and use MIB counter infrastructure") Signed-off-by: Jianguo Wu <wujianguo@chinatelecom.cn> Acked-by: Florian Westphal <fw@strlen.de> Link: https://lore.kernel.org/r/142e2fd9-58d9-bb13-fb75-951cccc2331e@163.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-07bridge: Fix a deadlock when enabling multicast snoopingJoseph Huang
When enabling multicast snooping, bridge module deadlocks on multicast_lock if 1) IPv6 is enabled, and 2) there is an existing querier on the same L2 network. The deadlock was caused by the following sequence: While holding the lock, br_multicast_open calls br_multicast_join_snoopers, which eventually causes IP stack to (attempt to) send out a Listener Report (in igmp6_join_group). Since the destination Ethernet address is a multicast address, br_dev_xmit feeds the packet back to the bridge via br_multicast_rcv, which in turn calls br_multicast_add_group, which then deadlocks on multicast_lock. The fix is to move the call br_multicast_join_snoopers outside of the critical section. This works since br_multicast_join_snoopers only deals with IP and does not modify any multicast data structures of the bridge, so there's no need to hold the lock. Steps to reproduce: 1. sysctl net.ipv6.conf.all.force_mld_version=1 2. have another querier 3. ip link set dev bridge type bridge mcast_snooping 0 && \ ip link set dev bridge type bridge mcast_snooping 1 < deadlock > A typical call trace looks like the following: [ 936.251495] _raw_spin_lock+0x5c/0x68 [ 936.255221] br_multicast_add_group+0x40/0x170 [bridge] [ 936.260491] br_multicast_rcv+0x7ac/0xe30 [bridge] [ 936.265322] br_dev_xmit+0x140/0x368 [bridge] [ 936.269689] dev_hard_start_xmit+0x94/0x158 [ 936.273876] __dev_queue_xmit+0x5ac/0x7f8 [ 936.277890] dev_queue_xmit+0x10/0x18 [ 936.281563] neigh_resolve_output+0xec/0x198 [ 936.285845] ip6_finish_output2+0x240/0x710 [ 936.290039] __ip6_finish_output+0x130/0x170 [ 936.294318] ip6_output+0x6c/0x1c8 [ 936.297731] NF_HOOK.constprop.0+0xd8/0xe8 [ 936.301834] igmp6_send+0x358/0x558 [ 936.305326] igmp6_join_group.part.0+0x30/0xf0 [ 936.309774] igmp6_group_added+0xfc/0x110 [ 936.313787] __ipv6_dev_mc_inc+0x1a4/0x290 [ 936.317885] ipv6_dev_mc_inc+0x10/0x18 [ 936.321677] br_multicast_open+0xbc/0x110 [bridge] [ 936.326506] br_multicast_toggle+0xec/0x140 [bridge] Fixes: 4effd28c1245 ("bridge: join all-snoopers multicast address") Signed-off-by: Joseph Huang <Joseph.Huang@garmin.com> Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com> Link: https://lore.kernel.org/r/20201204235628.50653-1-Joseph.Huang@garmin.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-07lwt_bpf: Replace preempt_disable() with migrate_disable()Cong Wang
migrate_disable() is just a wrapper for preempt_disable() in non-RT kernel. It is safe to replace it, and RT kernel will benefit. Note that it is introduced since Feb 2020. Suggested-by: Alexei Starovoitov <alexei.starovoitov@gmail.com> Signed-off-by: Cong Wang <cong.wang@bytedance.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201205075946.497763-2-xiyou.wangcong@gmail.com
2020-12-07lwt: Disable BH too in run_lwt_bpf()Dongdong Wang
The per-cpu bpf_redirect_info is shared among all skb_do_redirect() and BPF redirect helpers. Callers on RX path are all in BH context, disabling preemption is not sufficient to prevent BH interruption. In production, we observed strange packet drops because of the race condition between LWT xmit and TC ingress, and we verified this issue is fixed after we disable BH. Although this bug was technically introduced from the beginning, that is commit 3a0af8fd61f9 ("bpf: BPF for lightweight tunnel infrastructure"), at that time call_rcu() had to be call_rcu_bh() to match the RCU context. So this patch may not work well before RCU flavor consolidation has been completed around v5.0. Update the comments above the code too, as call_rcu() is now BH friendly. Signed-off-by: Dongdong Wang <wangdongdong.6@bytedance.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Reviewed-by: Cong Wang <cong.wang@bytedance.com> Link: https://lore.kernel.org/bpf/20201205075946.497763-1-xiyou.wangcong@gmail.com
2020-12-07Bluetooth: Increment management interface revisionMarcel Holtmann
Increment the mgmt revision due to the recently added new commands. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-07Bluetooth: Set missing suspend task bitsAbhishek Pandit-Subedi
When suspending, mark SUSPEND_SCAN_ENABLE and SUSPEND_SCAN_DISABLE tasks correctly when either classic or le scanning is modified. Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org> Signed-off-by: Howard Chung <howardchung@google.com> Reviewed-by: Alain Michaud <alainm@chromium.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-07Bluetooth: Change MGMT security info CMD to be more genericDaniel Winkler
For advertising, we wish to know the LE tx power capabilities of the controller in userspace, so this patch edits the Security Info MGMT command to be more generic, such that other various controller capabilities can be included in the EIR data. This change also includes the LE min and max tx power into this newly-named command. The change was tested by manually verifying that the MGMT command returns the tx power range as expected in userspace. Reviewed-by: Sonny Sasaka <sonnysasaka@chromium.org> Signed-off-by: Daniel Winkler <danielwinkler@google.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-07Bluetooth: Query LE tx power on startupDaniel Winkler
Queries tx power via HCI_LE_Read_Transmit_Power command when the hci device is initialized, and stores resulting min/max LE power in hdev struct. If command isn't available (< BT5 support), min/max values both default to HCI_TX_POWER_INVALID. This patch is manually verified by ensuring BT5 devices correctly query and receive controller tx power range. Reviewed-by: Sonny Sasaka <sonnysasaka@chromium.org> Signed-off-by: Daniel Winkler <danielwinkler@google.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-07Bluetooth: Use intervals and tx power from mgmt cmdsDaniel Winkler
This patch takes the min/max intervals and tx power optionally provided in mgmt interface, stores them in the advertisement struct, and uses them when configuring the hci requests. While tx power is not used if extended advertising is unavailable, software rotation will use the min and max advertising intervals specified by the client. This change is validated manually by ensuring the min/max intervals are propagated to the controller on both hatch (extended advertising) and kukui (no extended advertising) chromebooks, and that tx power is propagated correctly on hatch. These tests are performed with multiple advertisements simultaneously. Reviewed-by: Sonny Sasaka <sonnysasaka@chromium.org> Signed-off-by: Daniel Winkler <danielwinkler@google.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-07Bluetooth: Break add adv into two mgmt commandsDaniel Winkler
This patch adds support for the new advertising add interface, with the first command setting advertising parameters and the second to set advertising data. The set parameters command allows the caller to leave some fields "unset", with a params bitfield defining which params were purposefully set. Unset parameters will be given defaults when calling hci_add_adv_instance. The data passed to the param mgmt command is allowed to be flexible, so in the future if bluetoothd passes a larger structure with new params, the mgmt command will ignore the unknown members at the end. This change has been validated on both hatch (extended advertising) and kukui (no extended advertising) chromebooks running bluetoothd that support this new interface. I ran the following manual tests: - Set several (3) advertisements using modified test_advertisement.py - For each, validate correct data and parameters in btmon trace - Verified both for software rotation and extended adv Automatic test suite also run, testing many (25) scenarios of single and multi-advertising for data/parameter correctness. Reviewed-by: Sonny Sasaka <sonnysasaka@chromium.org> Signed-off-by: Daniel Winkler <danielwinkler@google.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-07Bluetooth: Add helper to set adv dataDaniel Winkler
We wish to handle advertising data separately from advertising parameters in our new MGMT requests. This change adds a helper that allows the advertising data and scan response to be updated for an existing advertising instance. Reviewed-by: Sonny Sasaka <sonnysasaka@chromium.org> Signed-off-by: Daniel Winkler <danielwinkler@google.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-07Bluetooth: Add toggle to switch off interleave scanHoward Chung
This patch add a configurable parameter to switch off the interleave scan feature. Signed-off-by: Howard Chung <howardchung@google.com> Reviewed-by: Alain Michaud <alainm@chromium.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-07Bluetooth: Refactor read default sys config for various typesHoward Chung
Refactor read default system configuration function so that it's capable of returning different types than u16 Signed-off-by: Howard Chung <howardchung@google.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-07Bluetooth: Handle active scan caseHoward Chung
This patch adds code to handle the active scan during interleave scan. The interleave scan will be canceled when users start active scan, and it will be restarted after active scan stopped. Signed-off-by: Howard Chung <howardchung@google.com> Reviewed-by: Alain Michaud <alainm@chromium.org> Reviewed-by: Manish Mandlik <mmandlik@chromium.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-07Bluetooth: Handle system suspend resume caseHoward Chung
This patch adds code to handle the system suspension during interleave scan. The interleave scan will be canceled when the system is going to sleep, and will be restarted after waking up. Signed-off-by: Howard Chung <howardchung@google.com> Reviewed-by: Alain Michaud <alainm@chromium.org> Reviewed-by: Manish Mandlik <mmandlik@chromium.org> Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org> Reviewed-by: Miao-chen Chou <mcchou@chromium.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-07Bluetooth: Interleave with allowlist scanHoward Chung
This patch implements the interleaving between allowlist scan and no-filter scan. It'll be used to save power when at least one monitor is registered and at least one pending connection or one device to be scanned for. The durations of the allowlist scan and the no-filter scan are controlled by MGMT command: Set Default System Configuration. The default values are set randomly for now. Signed-off-by: Howard Chung <howardchung@google.com> Reviewed-by: Alain Michaud <alainm@chromium.org> Reviewed-by: Manish Mandlik <mmandlik@chromium.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-07Bluetooth: Fix attempting to set RPA timeout when unsupportedEdward Vear
During controller initialization, an LE Set RPA Timeout command is sent to the controller if supported. However, the value checked to determine if the command is supported is incorrect. Page 1921 of the Bluetooth Core Spec v5.2 shows that bit 2 of octet 35 of the Supported_Commands field corresponds to the LE Set RPA Timeout command, but currently bit 6 of octet 35 is checked. This patch checks the correct value instead. This issue led to the error seen in the following btmon output during initialization of an adapter (rtl8761b) and prevented initialization from completing. < HCI Command: LE Set Resolvable Private Address Timeout (0x08|0x002e) plen 2 Timeout: 900 seconds > HCI Event: Command Complete (0x0e) plen 4 LE Set Resolvable Private Address Timeout (0x08|0x002e) ncmd 2 Status: Unsupported Remote Feature / Unsupported LMP Feature (0x1a) = Close Index: 00:E0:4C:6B:E5:03 The error did not appear when running with this patch. Signed-off-by: Edward Vear <edwardvear@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-07Bluetooth: Rename get_adv_instance_scan_rspLuiz Augusto von Dentz
This renames get_adv_instance_scan_rsp to adv_instance_is_scannable and make it return a bool since it was not actually properly return the size of the scan response as one could expect. Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-07Bluetooth: Fix not sending Set Extended Scan ResponseLuiz Augusto von Dentz
Current code is actually failing on the following tests of mgmt-tester because get_adv_instance_scan_rsp_len did not account for flags that cause scan response data to be included resulting in non-scannable instance when in fact it should be scannable. Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-07Bluetooth: Fix for Bluetooth SIG test L2CAP/COS/CFD/BV-14-CJimmy Wahlberg
This test case is meant to verify that multiple unknown options is included in the response. BLUETOOTH CORE SPECIFICATION Version 5.2 | Vol 3, Part A page 1057 'On an unknown option failure (Result=0x0003), the option(s) that contain anoption type field that is not understood by the recipient of the L2CAP_CONFIGURATION_REQ packet shall be included in the L2CAP_CONFIGURATION_RSP packet unless they are hints.' Before this patch: > ACL Data RX: Handle 11 flags 0x02 dlen 24 L2CAP: Configure Request (0x04) ident 18 len 16 Destination CID: 64 Flags: 0x0000 Option: Unknown (0x10) [mandatory] 10 00 11 02 11 00 12 02 12 00 < ACL Data TX: Handle 11 flags 0x00 dlen 17 L2CAP: Configure Response (0x05) ident 18 len 9 Source CID: 64 Flags: 0x0000 Result: Failure - unknown options (0x0003) Option: Unknown (0x10) [mandatory] 12 After this patch: > ACL Data RX: Handle 11 flags 0x02 dlen 24 L2CAP: Configure Request (0x04) ident 5 len 16 Destination CID: 64 Flags: 0x0000 Option: Unknown (0x10) [mandatory] 10 00 11 02 11 00 12 02 12 00 < ACL Data TX: Handle 11 flags 0x00 dlen 23 L2CAP: Configure Response (0x05) ident 5 len 15 Source CID: 64 Flags: 0x0000 Result: Failure - unknown options (0x0003) Option: Unknown (0x10) [mandatory] 10 11 01 11 12 01 12 Signed-off-by: Jimmy Wahlberg <jimmywa@spotify.com> Reviewed-by: Luiz Augusto Von Dentz <luiz.von.dentz@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-07Bluetooth: sco: Fix crash when using BT_SNDMTU/BT_RCVMTU optionWei Yongjun
This commit add the invalid check for connected socket, without it will causes the following crash due to sco_pi(sk)->conn being NULL: KASAN: null-ptr-deref in range [0x0000000000000050-0x0000000000000057] CPU: 3 PID: 4284 Comm: test_sco Not tainted 5.10.0-rc3+ #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1 04/01/2014 RIP: 0010:sco_sock_getsockopt+0x45d/0x8e0 Code: 48 c1 ea 03 80 3c 02 00 0f 85 ca 03 00 00 49 8b 9d f8 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 50 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e b5 03 00 00 8b 43 50 48 8b 0c RSP: 0018:ffff88801bb17d88 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff83a4ecdf RDX: 000000000000000a RSI: ffffc90002fce000 RDI: 0000000000000050 RBP: 1ffff11003762fb4 R08: 0000000000000001 R09: ffff88810e1008c0 R10: ffffffffbd695dcf R11: fffffbfff7ad2bb9 R12: 0000000000000000 R13: ffff888018ff1000 R14: dffffc0000000000 R15: 000000000000000d FS: 00007fb4f76c1700(0000) GS:ffff88811af80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555e3b7a938 CR3: 00000001117be001 CR4: 0000000000770ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: ? sco_skb_put_cmsg+0x80/0x80 ? sco_skb_put_cmsg+0x80/0x80 __sys_getsockopt+0x12a/0x220 ? __ia32_sys_setsockopt+0x150/0x150 ? syscall_enter_from_user_mode+0x18/0x50 ? rcu_read_lock_bh_held+0xb0/0xb0 __x64_sys_getsockopt+0xba/0x150 ? syscall_enter_from_user_mode+0x1d/0x50 do_syscall_64+0x33/0x40 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Fixes: 0fc1a726f897 ("Bluetooth: sco: new getsockopt options BT_SNDMTU/BT_RCVMTU") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: Luiz Augusto Von Dentz <luiz.von.dentz@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-07Bluetooth: fix typo in struct nameReo Shiseki
Signed-off-by: Reo Shiseki <reoshiseki@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
generated by cgit v1.2.3 (git 2.39.1) at 2025-08-06 05:03:25 +0000