Networking fixes for 5.13-rc5, including fixes from bpf, wireless,
netfilter and wireguard trees.

The bpf vs lockdown+audit fix is the most notable.

Current release - regressions:

 - virtio-net: fix page faults and crashes when XDP is enabled

 - mlx5e: fix HW timestamping with CQE compression, and make sure they
          are only allowed to coexist with capable devices

 - stmmac:
        - fix kernel panic due to NULL pointer dereference of mdio_bus_data
        - fix double clk unprepare when no PHY device is connected

Current release - new code bugs:

 - mt76: a few fixes for the recent MT7921 devices and runtime
         power management

Previous releases - regressions:

 - ice: - track AF_XDP ZC enabled queues in bitmap to fix copy mode Tx
        - fix allowing VF to request more/less queues via virtchnl
	- correct supported and advertised autoneg by using PHY capabilities
        - allow all LLDP packets from PF to Tx

 - kbuild: quote OBJCOPY var to avoid a pahole call break the build

Previous releases - always broken:

 - bpf, lockdown, audit: fix buggy SELinux lockdown permission checks

 - mt76: address the recent FragAttack vulnerabilities not covered
         by generic fixes

 - ipv6: fix KASAN: slab-out-of-bounds Read in fib6_nh_flush_exceptions

 - Bluetooth:
 	 - fix the erroneous flush_work() order, to avoid double free
         - use correct lock to prevent UAF of hdev object

 - nfc: fix NULL ptr dereference in llcp_sock_getname() after failed connect

 - ieee802154: multiple fixes to error checking and return values

 - igb: fix XDP with PTP enabled

 - intel: add correct exception tracing for XDP

 - tls: fix use-after-free when TLS offload device goes down and back up

 - ipvs: ignore IP_VS_SVC_F_HASHED flag when adding service

 - netfilter: nft_ct: skip expectations for confirmed conntrack

 - mptcp: fix falling back to TCP in presence of out of order packets
          early in connection lifetime

 - wireguard: switch from O(n) to a O(1) algorithm for maintaining peers,
          fixing stalls and a large memory leak in the process

Misc:

 - devlink: correct VIRTUAL port to not have phys_port attributes

 - Bluetooth: fix VIRTIO_ID_BT assigned number

 - net: return the correct errno code ENOBUF -> ENOMEM

 - wireguard:
         - peer: allocate in kmem_cache saving 25% on peer memory
         - do not use -O3

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
cxgb4: avoid link re-train during TC-MQPRIO configuration

When configuring TC-MQPRIO offload, only turn off netdev carrier and
don't bring physical link down in hardware. Otherwise, when the
physical link is brought up again after configuration, it gets
re-trained and stalls ongoing traffic.

Also, when firmware is no longer accessible or crashed, avoid sending
FLOWC and waiting for reply that will never come.

Fix following hung_task_timeout_secs trace seen in these cases.

INFO: task tc:20807 blocked for more than 122 seconds.
      Tainted: G S                5.13.0-rc3+ #122
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:tc   state:D stack:14768 pid:20807 ppid: 19366 flags:0x00000000
Call Trace:
 __schedule+0x27b/0x6a0
 schedule+0x37/0xa0
 schedule_preempt_disabled+0x5/0x10
 __mutex_lock.isra.14+0x2a0/0x4a0
 ? netlink_lookup+0x120/0x1a0
 ? rtnl_fill_ifinfo+0x10f0/0x10f0
 __netlink_dump_start+0x70/0x250
 rtnetlink_rcv_msg+0x28b/0x380
 ? rtnl_fill_ifinfo+0x10f0/0x10f0
 ? rtnl_calcit.isra.42+0x120/0x120
 netlink_rcv_skb+0x4b/0xf0
 netlink_unicast+0x1a0/0x280
 netlink_sendmsg+0x216/0x440
 sock_sendmsg+0x56/0x60
 __sys_sendto+0xe9/0x150
 ? handle_mm_fault+0x6d/0x1b0
 ? do_user_addr_fault+0x1c5/0x620
 __x64_sys_sendto+0x1f/0x30
 do_syscall_64+0x3c/0x80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f7f73218321
RSP: 002b:00007ffd19626208 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000055b7c0a8b240 RCX: 00007f7f73218321
RDX: 0000000000000028 RSI: 00007ffd19626210 RDI: 0000000000000003
RBP: 000055b7c08680ff R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000055b7c085f5f6
R13: 000055b7c085f60a R14: 00007ffd19636470 R15: 00007ffd196262a0

Fixes: b1396c2bd675 ("cxgb4: parse and configure TC-MQPRIO offload")
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 files changed