Commit Graph

25 Commits

Author SHA1 Message Date
Linus Torvalds
1b78070aae Including fixes from Bluetooth, IPSec and Netfilter.
Current release - fix to a fix:
 
  - netfilter: ipset: remove need to allocate memory on delete operations
 
 Current release - regressions:
 
  - macb: drop CONFIG_OF #if block, fix build
 
 Previous releases - always broken:
 
  - stream of fixes for SCTP continues
 
  - inet: frags: strip GSO state from fragments before reassembly
 
  - virtio-net: ensure that TCP packets don't overflow gso_segs
 
  - tcp-ao: fix use-after-free of current_key on reconnect to another peer
 
  - page_pool: remove zone/policy GFP flags when allocating XArray entries
 
  - Bluetooth: L2CAP: reject accept queue add unless BT_LISTEN
 
  - tls: device: fix out-of-bounds write in tls_append_frag()
 
  - eth: bnxt:
    - ring the doorbell when SW USO exits early, avoid packets stuck in Tx
    - gate TPH enablement behind BNXT_SUPPORTS_QUEUE_API check, avoid users
      of older NICs seeing non-actionable warning messages
 
  - eth: qede: fix NULL pointer dereference in TPA fragment processing
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from Bluetooth, IPSec and Netfilter.

  Current release - fix to a fix:

   - netfilter: ipset: remove need to allocate memory on delete operations

  Current release - regressions:

   - macb: drop CONFIG_OF #if block, fix build

  Previous releases - always broken:

   - stream of fixes for SCTP continues

   - inet: frags: strip GSO state from fragments before reassembly

   - virtio-net: ensure that TCP packets don't overflow gso_segs

   - tcp-ao: fix use-after-free of current_key on reconnect to another
     peer

   - page_pool: remove zone/policy GFP flags when allocating XArray
     entries

   - Bluetooth: L2CAP: reject accept queue add unless BT_LISTEN

   - tls: device: fix out-of-bounds write in tls_append_frag()

   - eth: bnxt:
      - ring the doorbell when SW USO exits early, avoid packets stuck
        in Tx
      - gate TPH enablement behind BNXT_SUPPORTS_QUEUE_API check, avoid
        users of older NICs seeing non-actionable warning messages

   - eth: qede: fix NULL pointer dereference in TPA fragment processing"

* tag 'net-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (216 commits)
  inet: frags: strip GSO state from fragments before reassembly
  net/sched: sch_htb: limit htb_classify inner-class filter hops
  selftests/net: packetdrill: add tcp_urg_ptr_retransmit
  tcp: fix corruption of urgent data on multi-segment retransmit
  usb: atm: usbatm: fix invalid ci_range initialization
  net: fec: only stop PTP if it was initialized
  slip: remove slip_hangup() to fix use-after-free in slip_receive_buf()
  net: bridge: mcast: fix use-after-free of a master VLAN's multicast context
  net/sched: bound qdisc_pkt_len to prevent qdisc soft lockup
  net: dsa: mxl862xx: enable assisted learning on CPU port
  net: stmmac: restore NET_IP_ALIGN in the RX DMA offset
  net: stmmac: drop gso_enabled_types and rely on netdev features
  net: stmmac: selftests: Don't test flow control for small rx fifos
  net: stmmac: selftests: Account for the UC filter list for filtering tests
  net: stmmac: dwxgmac: Account for the primary MAC address for UC filtering
  net: stmmac: dwmac4: Account for the primary MAC address for UC filtering
  net: stmmac: dwmac1000: Account for the primary MAC address for UC filtering
  net: stmmac: selftests: Check multiple MMC counters
  selftests: net: Fix slow configurations in big_tcp_tunnels.sh
  selftests: net: Lower threshold with csum offload off in big_tcp_tunnels.sh
  ...
2026-08-27 13:53:43 -07:00
Linus Torvalds
f4d50813c0 USB / Thunderbolt changes for 7.3-rc1
Here is the big set of USB and Thunderbolt driver updates for 7.3-rc1.
 
 Lots of driver work for new devices and systems, and many other minor
 fixes and updates.  Included in here are:
   - Thunderbolt subsystem driver updates and additions
   - typec driver updates and additions
   - usb gadget fixes all over the place, seems like people are finally
     paying attention to these drivers for some reason
   - xhci driver updates and fixes based on lots of reports
   - usb-serial driver updates and additions
   - new device ids
   - other minor USB driver updates and fixes
 
 All of these have been in linux-next for a while with no reported issues
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB / Thunderbolt updates from Greg KH:
 "Here is the big set of USB and Thunderbolt driver updates for 7.3-rc1.

  Lots of driver work for new devices and systems, and many other minor
  fixes and updates. Included in here are:

   - Thunderbolt subsystem driver updates and additions

   - typec driver updates and additions

   - usb gadget fixes all over the place, seems like people are finally
     paying attention to these drivers for some reason

   - xhci driver updates and fixes based on lots of reports

   - usb-serial driver updates and additions

   - new device ids

   - other minor USB driver updates and fixes

  All of these have been in linux-next for a while with no reported issues"

* tag 'usb-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (163 commits)
  usb: gadget: uvc: fix dangling pointers in uvc_function_bind() and uvc_function_unbind()
  usb: typec: hd3ss3220: fix VBUS regulator error message
  usb: usbfs: fix use-after-free of usb_device in usbdev_release()
  usb: gadget: u_audio: Fix use-after-free on sound card disconnect
  usb: dwc3: gadget: Fix use-after-free in dwc3_gadget_free_endpoints due to race condition
  usb: gadget: f_tcm: keep port count until LUN teardown completes
  usb: usbtest: disable dynamic ID support
  usb: typec: tcpci: pass correct rx_type to tcpm_pd_receive()
  USB: c67x00: fix use-after-free in c67x00_add_iso_urb()
  usb: typec: ucsi: use UCSI_TIMEOUT_MS for sync command completion
  usb: gadget: snps_udc_plat: clean up PHY on probe deferral
  usb: gadget: f_tcm: fix deadlock in usbg_make_tpg()
  usb: dwc2: gadget: Exit partial power down state when changing USB pull-up
  usb: gadget: f_fs: Fix Use-After-Free in AIO error path
  usb: gadget: f_fs: Prevent deadlock during ep0 read loop
  usb: gadget: at91_udc: drain polled-VBUS timer/work before udc is freed
  usb: gadget: midi2: remove default configfs groups on teardown
  usb: gadget: uvc: Fix null pointer dereference in uvcg_video_init()
  usb: typec: thunderbolt: Disable work before freeing tbt on remove
  usb: xhci: Handle bogus TRB pointers in Missed Service Error events
  ...
2026-08-25 10:44:46 -07:00
Fan Ye
c5ae83ee02 net: thunderbolt: Count delivered packets in rx_packets and rx_bytes
tbnet_poll() increments rx_packets once per received frame because that is
the NAPI work unit, and then adds the same number to stats.rx_packets. An
skb is handed to the stack only when the last frame of a packet arrives,
so once the MTU exceeds TBNET_MAX_PAYLOAD_SIZE the statistic reports
frames. tx_packets is bumped once per skb, so the two ends of a link
disagree: at MTU 65330 the receiver reports 16 times the packets its
sender sent.

rx_bytes has the matching problem: frames of a packet that is later
dropped mid-assembly are already accounted, so it does not correspond to
rx_packets as documented. Account for both where the packet is completed,
and leave the NAPI work counter alone.

Fixes: e69b6c02b4 ("net: Add support for networking over Thunderbolt cable")
Signed-off-by: Fan Ye <fy15309206903@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Acked-by: Mika Westerberg <westeri@kernel.org>
Link: https://patch.msgid.link/20260815-tbnet-rx-stats-v1-1-8da375c2cd09@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-08-20 12:20:06 -07:00
Greg Kroah-Hartman
e1e6e541c5 thunderbolt: Changes for v7.3 merge window
This includes following USB4/Thunderbolt changes for the v7.3 merge
 window:
 
   - Assert Downstream Port Reset for Thunderbolt 3 devices during
     shutdown to avoid unnecessary delays over warm reset.
   - Tidy up Thunderbolt service ->probe callbacks.
   - USB4STREAM improvements.
   - AMD host interface quirk to fix Tx ring hang on teardown of a DMA tunnel.
   - Minor fixes and cleanups.
 
 All these have been in linux-next with no reported issues.
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Merge tag 'thunderbolt-for-v7.3-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into usb-next

Mika writes:

thunderbolt: Changes for v7.3 merge window

This includes following USB4/Thunderbolt changes for the v7.3 merge
window:

  - Assert Downstream Port Reset for Thunderbolt 3 devices during
    shutdown to avoid unnecessary delays over warm reset.
  - Tidy up Thunderbolt service ->probe callbacks.
  - USB4STREAM improvements.
  - AMD host interface quirk to fix Tx ring hang on teardown of a DMA tunnel.
  - Minor fixes and cleanups.

All these have been in linux-next with no reported issues.

* tag 'thunderbolt-for-v7.3-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt:
  thunderbolt: Clamp DMA tunnel credits to what a hop register can hold
  thunderbolt: Use min() for the DMA path credit cap
  thunderbolt: debugfs: Replace get_zeroed_page() with kzalloc()
  thunderbolt: Add quirk to reset host interface on DMA path teardown for AMD USB4 routers
  thunderbolt: stream: Add support for busy polling
  thunderbolt: Make interrupt optional for rings
  thunderbolt: stream: Support IOCB_NOWAIT in non-blocking I/O as well
  thunderbolt: stream: Fix possible short reads/writes
  thunderbolt: stream: Restore consumer if copying from iter fails
  thunderbolt: Remove redundant dev_err_probe()
  docs: admin-guide: thunderbolt: Fix sentence structure
  thunderbolt: xdomain: Notify peers after enumeration
  thunderbolt: Drop comma after device id array terminator
  thunderbolt: Assert that a service driver has a probe callback
  thunderbolt: Stop passing matched device ID to .probe()
  thunderbolt: Assert downstream port reset on shutdown
2026-08-19 10:01:59 +02:00
Fan Ye
3c8b26ebf5 net: thunderbolt: Mark the connection down when bringing it up fails
Every failure path in tbnet_connected_work() undoes its own work and
returns without clearing login_sent, so the connection still looks
established. The next tbnet_tear_down() therefore takes its main branch
and repeats a teardown that already happened: it stops rings that are
already stopped, which is a dev_WARN() and fatal under panic_on_warn,
and it releases net->remote_transmit_path even on the HopID mismatch
path, where this connection never owned that id, silently freeing one
that someone else is still using.

Clear login_sent on those paths. That is enough for tbnet_tear_down() to
leave the unwound state alone, and login_received has to stay set: it
records that the peer has logged in and carries the transmit path it gave
us, which nothing on this side can make the peer send again. Two things
change beyond keeping the teardown out of the way: the logout request in
that block is no longer sent, and the peer's next login request now
re-queues our login work rather than connected_work, giving the
connection a fresh login instead of a retry on stale state.

Fixes: e69b6c02b4 ("net: Add support for networking over Thunderbolt cable")
Cc: <stable@vger.kernel.org> # 5.13+
Signed-off-by: Fan Ye <fy15309206903@gmail.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260811-b4-tbnet-hopid-v3-2-9e75d1b51331@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-08-17 11:14:05 -07:00
Fan Ye
2f1463554d net: thunderbolt: Release the Rx HopID that was handed out on mismatch
tb_xdomain_alloc_in_hopid() passes the wanted HopID to ida_alloc_range()
as the lower bound, so a taken id is not an error there: the allocator
returns the next free one above it. tbnet_connected_work() asks for the
peer's transmit path, treats any other id as a failure and returns
without releasing what it got, so that allocation stays live for the rest
of the XDomain connection with nothing left holding a reference to it.

Release the id when it is not the one we asked for, the same way the
error unwind at the end of the function releases the expected one.

Fixes: 180b068942 ("thunderbolt: Allow multiple DMA tunnels over a single XDomain connection")
Cc: stable@vger.kernel.org
Signed-off-by: Fan Ye <fy15309206903@gmail.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260811-b4-tbnet-hopid-v3-1-9e75d1b51331@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-08-17 11:14:05 -07:00
Fan XinRan
68bf02b6b4 net: thunderbolt: Tear down DMA paths before stopping the rings
tbnet_tear_down() stops both rings and frees their frame buffers before
calling tb_xdomain_disable_paths().  tb_ring_stop() zeroes the ring's
descriptor base and tbnet_free_buffers() unmaps and frees the pages the
frames sit in, so by the time __tb_path_deactivate_hop() polls the hop's
'pending' bit, anything still in flight has nowhere to drain to.

The teardown sequence has been in this order since the driver was added.
The setup path has not: commit ff7cd07f30 ("net: thunderbolt: Enable
DMA paths only after rings are enabled") moved the path enable to the end
of tbnet_connected_work() and documented why:

	/* Both logins successful so enable the rings, high-speed DMA
	 * paths and start the network device queue.
	 *
	 * Note we enable the DMA paths last to make sure we have primed
	 * the Rx ring before any incoming packets are allowed to
	 * arrive.
	 */

Teardown was never updated to match, so the rings and the paths now come
down in the same order they go up instead of in reverse.

On an ASMedia ASM4242 host router the 'pending' bit then never clears:
every teardown burns the full 500 ms timeout and
__tb_path_deactivate_hop() returns -ETIMEDOUT.  Raising the timeout to
5 s does not help, so the hop is not slow to drain, it never drains
at all.

The failure is invisible above the thunderbolt core.
__tb_path_deactivate_hops() is void and only calls tb_port_warn();
tb_path_deactivate(), tb_tunnel_deactivate() and
__tb_disconnect_xdomain_paths() are void as well, and
tb_disconnect_xdomain_paths() ends in an unconditional "return 0".  So
tb_xdomain_disable_paths() reports success and the netdev_warn() below
it never fires.  Repeated teardowns eventually take the XDomain control
channel down, after which the peer node is gone and only a power cycle
brings the controller back.

Deactivating the paths first fixes it.  Measured with kretprobes on a
stock v6.17 tree with no other patches applied, on a link that was up
and had just carried traffic:

  before: __tb_path_deactivate_hop() returns 0 for the first hop, then
          -ETIMEDOUT for the second 500335 us later
  after:  0 for both, 525 us apart

Alternating the two orderings ABBA over three load levels, four
teardowns per arm: every teardown failed before the change (21 of 21
that ran), none failed after (0 of 24).  The before arms ran short
because the link died partway through.  The same split shows up when
the interface is enslaved to a bond instead of just brought down, which
is how I ran into this in the first place.  Throughput and latency after
the change are unchanged.

Hosts whose routers drain the hop despite the stale descriptor base see
no functional difference, since the paths end up deactivated either way.

Fixes: e69b6c02b4 ("net: Add support for networking over Thunderbolt cable")
Signed-off-by: Fan XinRan <shinjiangjiang@gmail.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://patch.msgid.link/20260803-b4-tbnet-teardown-v2-1-27de6a13ca2d@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-08-06 08:19:53 -07:00
Fan Ye
1881f2efbf Revert "net: thunderbolt: Enable end-to-end flow control also in transmit"
This reverts commit a8065af334.

Per the USB4 spec, a Transmit Descriptor Ring with E2E flow control
disabled does not require any credits to be available before the Host
Interface Adapter Layer transmits a tunneled packet from it. Once E2E is
enabled on that ring the controller must first obtain end-to-end
credits.

The ASMedia ASM4242 USB4 host router (PCI 1b21:2425) never delivers
those credits. The controller does accept the configuration: reading the
ring OPTIONS register back right after tb_ring_start() returns exactly
what was written, including RING_FLAG_E2E_FLOW_CONTROL (bit 28) and the
E2E HopID field. No credit ever arrives though, so the Tx ring's
hardware consumer index never advances and the link carries no traffic
at all.

Measured on two hosts connected point to point, onboard ASM4242 on MSI
X870E and X870, v6.17, stock drivers/net/thunderbolt/main.c with only
this revert applied on top:

  before: 100% packet loss to the peer; thunderbolt0 is up and the
          XDomain handshake completes ("new host found"), but iperf3
          fails with "No route to host" once the neighbour entry
          expires
  after:  0% packet loss, 0.28 ms RTT; iperf3 4.21 Gb/s one way and
          5.17 Gb/s the other (5 runs each, stddev <= 0.02), 1
          retransmit in 10 s

An instrumented build additionally showed a frozen-Tx-consumer watchdog
firing ~30k times in a 10 s window before this change.

Rx-side E2E is not touched by this revert, so peers that do return
credits keep receive-side flow control.

ASMedia does not look like an isolated case. The out-of-tree
thunderbolt-ibverbs project disables native E2E on AMD NHI by default,
noting that "Strix Halo has reproduced TX completion wedges with
multiple native E2E rings active" -- the same failure mode, on a
different vendor. Since the driver has no way to tell in advance which
host router returns the credits, going back to the previous behaviour
looks safer than adding a quirk per affected part; Tx-side E2E can be
reintroduced as an opt-in for controllers that are known to implement
the credit return.

Note that the reverted commit was not fixing a reported problem, it was
derived from the spec wording alone, so this revert is not expected to
regress a known workload. Cc'ing the original author in case there was
one.

Fixes: a8065af334 ("net: thunderbolt: Enable end-to-end flow control also in transmit")
Cc: zhangjianrong <zhangjianrong5@huawei.com>
Signed-off-by: Fan Ye <fy15309206903@gmail.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://patch.msgid.link/20260727123002.25225-1-fy15309206903@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-07-30 16:10:24 -07:00
Uwe Kleine-König (The Capable Hub)
9990c493ef thunderbolt: Drop comma after device id array terminator
The usual style for other device id arrays doesn't have a comma after
the initializer.

Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2026-07-27 11:59:44 +02:00
Uwe Kleine-König (The Capable Hub)
45f104755a thunderbolt: Stop passing matched device ID to .probe()
No driver makes use of that parameter, so drop it and don't spend the
effort to determine the matching entry.

Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2026-07-27 11:59:44 +02:00
Linus Torvalds
805185b7c7 Including fixes from netfilter and IPsec.
Current release - regressions:
 
  - net: do not acquire dev->tx_global_lock in netdev_watchdog_up()
 
  - net: ethtool: keep rtnl_lock for ops using ethtool_op_get_link()
 
  - net: fix deadlock in nested UP notifier events
 
 Current release - new code bugs:
 
  - eth: cn20k: fix subbank free list indexing for search order
 
  - eth: airoha: fix BQL underflow in shared QDMA TX ring
 
 Previous releases - regressions:
 
  - netfilter:
    - flowtable: fix offloaded ct timeout never being extended
    - nf_conncount: prevent connlimit drops for early confirmed ct
 
 Previous releases - always broken:
 
  - require CAP_NET_ADMIN in the originating netns when modifying
    cross-netns devices
 
  - report NAPI thread PID in the caller's pid namespace
 
  - mac802154: fix dirty frag in in-place crypto for IOT radios
 
  - sctp: hold socket lock when dumping endpoints in sctp_diag,
    avoid an overflow
 
  - eth: gve: fix header buffer corruption with header-split and HW-GRO
 
  - af_key: initialize alg_key_len for IPComp states, prevent OOB read
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from netfilter and IPsec.

  Current release - regressions:

   - do not acquire dev->tx_global_lock in netdev_watchdog_up()

   - ethtool: keep rtnl_lock for ops using ethtool_op_get_link()

   - fix deadlock in nested UP notifier events

  Current release - new code bugs:

   - eth:
      - cn20k: fix subbank free list indexing for search order
      - airoha: fix BQL underflow in shared QDMA TX ring

  Previous releases - regressions:

   - netfilter:
     - flowtable: fix offloaded ct timeout never being extended
     - nf_conncount: prevent connlimit drops for early confirmed ct

  Previous releases - always broken:

   - require CAP_NET_ADMIN in the originating netns when modifying
     cross-netns devices

   - report NAPI thread PID in the caller's pid namespace

   - mac802154: fix dirty frag in in-place crypto for IOT radios

   - sctp: hold socket lock when dumping endpoints in sctp_diag, avoid
     an overflow

   - eth: gve: fix header buffer corruption with header-split and HW-GRO

   - af_key: initialize alg_key_len for IPComp states, prevent OOB read"

* tag 'net-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (213 commits)
  selftests: bonding: add a test for VLAN propagation over a bonded real device
  vlan: defer real device state propagation to netdev_work
  net: add the driver-facing netdev_work scheduling API
  net: turn the rx_mode work into a generic netdev_work facility
  net: ethtool: keep rtnl_lock for ops using ethtool_op_get_link()
  rxrpc: Fix rxrpc_rotate_tx_rotate() to check there's something to rotate
  rxrpc: Fix leak of released call in recvmsg(MSG_PEEK)
  rxrpc: Fix socket notification race
  rxrpc: Fix potential infinite loop in rxrpc_recvmsg()
  rxrpc: Fix oob challenge leak in cleanup after notification failure
  rxrpc: Fix the reception of a reply packet before data transmission
  afs: Fix uncancelled rxrpc OOB message handler
  afs: Fix further netns teardown to cancel the preallocation charger
  rxrpc: Fix double unlock in rxrpc_recvmsg()
  rxrpc: Fix leak of connection from OOB challenge
  rxrpc: Fix ACKALL packet handling
  net: hns3: differentiate autoneg default values between copper and fiber
  net: hns3: fix permanent link down deadlock after reset
  net: hns3: refactor MAC autoneg and speed configuration
  net: hns3: unify copper port ksettings configuration path
  ...
2026-06-25 12:25:36 -07:00
Maoyi Xie
55d9895f89 net: thunderbolt: Fix frags[] overflow by bounding frame_count
tbnet_poll() assembles a multi-frame ThunderboltIP packet into one skb. The
first frame goes into the skb linear area and every further frame is added as
a page fragment.

	skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags,
			page, hdr_size, frame_size,
			TBNET_RX_PAGE_SIZE - hdr_size);

A packet of frame_count frames therefore ends up with frame_count - 1
fragments. tbnet_check_frame() only bounds the peer supplied frame_count to
TBNET_RING_SIZE / 4 (64), which is far above MAX_SKB_FRAGS (17 by default). A
peer that sends a packet of 19 or more small frames pushes nr_frags past
MAX_SKB_FRAGS, so skb_add_rx_frag() writes past skb_shinfo()->frags[] and
corrupts memory after the shared info.

Tighten the start of packet bound to MAX_SKB_FRAGS + 1 so a packet can never
produce more fragments than frags[] can hold. This matches the recent skb
frags overflow fixes in other receive paths, for example f0813bcd2d ("net:
wwan: t7xx: fix potential skb->frags overflow in RX path") and 600dc40554
("net: usb: cdc-phonet: fix skb frags[] overflow in rx_complete()").

Fixes: e69b6c02b4 ("net: Add support for networking over Thunderbolt cable")
Cc: stable@vger.kernel.org
Signed-off-by: Maoyi Xie <maoyixie.tju@gmail.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://patch.msgid.link/178163152194.2486768.14724194232649760778@maoyixie.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-18 18:09:36 -07:00
Mika Westerberg
c51777370a thunderbolt / net: Let the service drivers configure interrupt throttling
Instead of the core driver programming fixed value for throttling let
the service drivers to specify the interval if they need this.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2026-05-19 14:20:18 +02:00
Mika Westerberg
5140737c59 thunderbolt / net: Move ring_frame_size() to thunderbolt.h
This function can be used outside of thunderbolt networking driver so
move it to the common header.

No functional changes.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2026-05-19 14:20:18 +02:00
Ian MacDonald
7a3d3279a5 net: thunderbolt: Allow reading link settings
In order to use Thunderbolt networking as part of bonding device it
needs to support ->get_link_ksettings() ethtool operation, so that the
bonding driver can read the link speed and the related attributes. Add
support for this to the driver.

Signed-off-by: Ian MacDonald <ian@netstatz.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://patch.msgid.link/20260115115646.328898-5-mika.westerberg@linux.intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-19 12:09:58 -08:00
Mika Westerberg
8411d7286b net: thunderbolt: Allow changing MAC address of the device
The MAC address we use is based on a suggestion in the USB4 Inter-domain
spec but it is not really used in the USB4NET protocol. It is more
targeted for the upper layers of the network stack. There is no reason
why it should not be changed by the userspace for example if needed for
bonding.

Reported-by: Ian MacDonald <ian@netstatz.com>
Closes: https://lore.kernel.org/netdev/CAFJzfF9N4Hak23sc-zh0jMobbkjK7rg4odhic1DQ1cC+=MoQoA@mail.gmail.com/
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://patch.msgid.link/20260115115646.328898-2-mika.westerberg@linux.intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-01-19 12:09:57 -08:00
zhangjianrong
a8065af334 net: thunderbolt: Enable end-to-end flow control also in transmit
According to USB4 specification, if E2E flow control is disabled for
the Transmit Descriptor Ring, the Host Interface Adapter Layer shall
not require any credits to be available before transmitting a Tunneled
Packet from this Transmit Descriptor Ring, so e2e flow control should
be enabled in both directions.

Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://lore.kernel.org/20250624153805.GC2824380@black.fi.intel.com
Signed-off-by: zhangjianrong <zhangjianrong5@huawei.com>
Link: https://patch.msgid.link/20250628093813.647005-1-zhangjianrong5@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-02 14:17:43 -07:00
zhangjianrong
8ec31cb17c net: thunderbolt: Fix the parameter passing of tb_xdomain_enable_paths()/tb_xdomain_disable_paths()
According to the description of tb_xdomain_enable_paths(), the third
parameter represents the transmit ring and the fifth parameter represents
the receive ring. tb_xdomain_disable_paths() is the same case.

[Jakub] Mika says: it works now because both rings ->hop is the same

Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://lore.kernel.org/20250625051149.GD2824380@black.fi.intel.com
Signed-off-by: zhangjianrong <zhangjianrong5@huawei.com>
Link: https://patch.msgid.link/20250628094920.656658-1-zhangjianrong5@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-07-02 14:15:09 -07:00
Mika Westerberg
e0b65f9b81 net: thunderbolt: Fix TCPv6 GSO checksum calculation
Alex reported that running ssh over IPv6 does not work with
Thunderbolt/USB4 networking driver. The reason for that is that driver
should call skb_is_gso() before calling skb_is_gso_v6(), and it should
not return false after calculates the checksum successfully. This probably
was a copy paste error from the original driver where it was done properly.

Reported-by: Alex Balcanquall <alex@alexbal.com>
Fixes: e69b6c02b4 ("net: Add support for networking over Thunderbolt cable")
Cc: stable@vger.kernel.org
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-09-15 13:45:05 +01:00
Mika Westerberg
9c60f2a444 net: thunderbolt: Fix typos in comments
Fix two typos in comments:

  blongs -> belongs
  UPD -> UDP

No functional changes.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-04-12 21:09:12 -07:00
Mika Westerberg
5bbec0adfa net: thunderbolt: Fix sparse warnings in tbnet_xmit_csum_and_map()
Fixes the following warning when the driver is built with sparse checks
enabled:

main.c:993:23: warning: incorrect type in initializer (different base types)
main.c:993:23:    expected restricted __wsum [usertype] wsum
main.c:993:23:    got restricted __be32 [usertype]

No functional changes intended.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-04-12 21:09:12 -07:00
Mika Westerberg
1853672215 net: thunderbolt: Fix sparse warnings in tbnet_check_frame() and tbnet_poll()
Fixes the following warnings when the driver is built with sparse
checks enabled:

main.c:767:47: warning: restricted __le32 degrades to integer
main.c:775:47: warning: restricted __le16 degrades to integer
main.c:776:44: warning: restricted __le16 degrades to integer
main.c:876:40: warning: incorrect type in assignment (different base types)
main.c:876:40:    expected restricted __le32 [usertype] frame_size
main.c:876:40:    got unsigned int [assigned] [usertype] frame_size
main.c:877:41: warning: incorrect type in assignment (different base types)
main.c:877:41:    expected restricted __le32 [usertype] frame_count
main.c:877:41:    got unsigned int [usertype]
main.c:878:41: warning: incorrect type in assignment (different base types)
main.c:878:41:    expected restricted __le16 [usertype] frame_index
main.c:878:41:    got unsigned short [usertype]
main.c:879:38: warning: incorrect type in assignment (different base types)
main.c:879:38:    expected restricted __le16 [usertype] frame_id
main.c:879:38:    got unsigned short [usertype]
main.c:880:62: warning: restricted __le32 degrades to integer
main.c:880:35: warning: restricted __le16 degrades to integer

No functional changes intended.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-04-12 21:09:12 -07:00
Mika Westerberg
f758652703 net: thunderbolt: Add tracepoints
These are useful when debugging various performance issues.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-12 21:19:30 -08:00
Mika Westerberg
7b3502c159 net: thunderbolt: Add debugging when sending/receiving control packets
These can be useful when debugging possible issues around USB4NET
control packet exchange.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-12 21:19:30 -08:00
Mika Westerberg
0d0950a968 net: thunderbolt: Move into own directory
We will be adding tracepoints to the driver so instead of littering the
main network driver directory, move the driver into its own directory.
While there, rename the module to thunderbolt_net (with underscore) to
match with the thunderbolt_dma_test convention.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-12 21:19:30 -08:00