Currently the linking order of the infiniband, IB, modules decide in which
order the clients are attached and detached. For example one IB client may
use resources from another IB client. This can lead to a potential deadlock
at shutdown. For example if the ipoib is unregistered after the ib_multicast
client is detached, then if ipoib is using multicast addresses a deadlock may
happen, because ib_multicast will wait for all its resources to be freed before
returning from the remove method.
Fix this by using module_xxx_order() instead of module_xxx().
Differential Revision: https://reviews.freebsd.org/D23973
MFC after: 1 week
Sponsored by: Mellanox Technologies
Make sure we disable the multicast filter in promiscious mode aswell as when
the all multicast flag is set.
MFC after: 1 week
Found by: Tycho Nightingale <tychon@freebsd.org>
Sponsored by: Mellanox Technologies
Remove TSO from the toggle mask when automatically disabled by TXCKSUM* in
various NIC drivers.
Reviewed by: hselasky, np, gallatin, jpaetzel
Approved by: mav (mentor)
MFC after: 1 week
Sponsored by: iXsystems, Inc.
Differential Revision: https://reviews.freebsd.org/D25120
r357614 added CTLFLAG_NEEDGIANT to make it easier to find nodes that are
still not MPSAFE (or already are but aren’t properly marked).
Use it in preparation for a general review of all nodes.
This is non-functional change that adds annotations to SYSCTL_NODE and
SYSCTL_PROC nodes using one of the soon-to-be-required flags.
Mark all obvious cases as MPSAFE. All entries that haven't been marked
as MPSAFE before are by default marked as NEEDGIANT
Approved by: kib (mentor, blanket)
Commented by: kib, gallatin, melifaro
Differential Revision: https://reviews.freebsd.org/D23718
Make sure all receive completion callbacks are covered by the network
EPOCH(9), because this is required when calling if_input() and
ether_input() after r357012.
Convert some spaces to tabs while at it.
Sponsored by: Mellanox Technologies
Debugnet is a simplistic and specialized panic- or debug-time reliable
datagram transport. It can drive a single connection at a time and is
currently unidirectional (debug/panic machine transmit to remote server
only).
It is mostly a verbatim code lift from netdump(4). Netdump(4) remains
the only consumer (until the rest of this patch series lands).
The INET-specific logic has been extracted somewhat more thoroughly than
previously in netdump(4), into debugnet_inet.c. UDP-layer logic and up, as
much as possible as is protocol-independent, remains in debugnet.c. The
separation is not perfect and future improvement is welcome. Supporting
INET6 is a long-term goal.
Much of the diff is "gratuitous" renaming from 'netdump_' or 'nd_' to
'debugnet_' or 'dn_' -- sorry. I thought keeping the netdump name on the
generic module would be more confusing than the refactoring.
The only functional change here is the mbuf allocation / tracking. Instead
of initiating solely on netdump-configured interface(s) at dumpon(8)
configuration time, we watch for any debugnet-enabled NIC for link
activation and query it for mbuf parameters at that time. If they exceed
the existing high-water mark allocation, we re-allocate and track the new
high-water mark. Otherwise, we leave the pre-panic mbuf allocation alone.
In a future patch in this series, this will allow initiating netdump from
panic ddb(4) without pre-panic configuration.
No other functional change intended.
Reviewed by: markj (earlier version)
Some discussion with: emaste, jhb
Objection from: marius
Differential Revision: https://reviews.freebsd.org/D21421
This was enumerated with exhaustive search for sys/eventhandler.h includes,
cross-referenced against EVENTHANDLER_* usage with the comm(1) utility. Manual
checking was performed to avoid redundant includes in some drivers where a
common os_bsd.h (for example) included sys/eventhandler.h indirectly, but it is
possible some of these are redundant with driver-specific headers in ways I
didn't notice.
(These CUs did not show up as missing eventhandler.h in tinderbox.)
X-MFC-With: r347984
mlx4_en_stop_port() calls mlx4_en_put_qp() which can refer the link level
address of the network interface, which in turn will be freed by the
network interface detach function. Make sure the port is stopped
before detaching the network interface.
MFC after: 1 week
Sponsored by: Mellanox Technologies
It can happen during shutdown that the lock will recurse when the mlx4en(4)
instance is part of a lagg interface. Call ether_ifdetach() unlocked.
Backtrace:
panic(): _sx_xlock_hard: recursed on non-recursive sx &mdev->state_lock
_sx_xlock_hard()
_sx_xlock()
mlx4_en_ioctl()
if_setlladdr()
lagg_port_destroy()
lagg_port_ifdetach()
if_detach()
mlx4_en_destroy_netdev()
mlx4_en_remove()
mlx4_remove_device()
mlx4_unregister_device()
mlx4_unload_one()
mlx4_shutdown()
linux_pci_shutdown()
bus_generic_shutdown()
MFC after: 1 week
Sponsored by: Mellanox Technologies
Copy small packets like TCP ACKs into a new mbuf
reusing the existing mbuf to receive a new ethernet
frame. This avoids wasting buffer space for
small sized packets.
Submitted by: hselasky@
Approved by: hselasky (mentor)
MFC after: 1 week
Sponsored by: Mellanox Technologies
The "priv->pkstats.rx_dropped" is written twice in a row.
Submitted by: hselasky@
Approved by: hselasky (mentor)
MFC after: 1 week
Sponsored by: Mellanox Technologies
Also when the MTU is greater than MCLBYTES.
Submitted by: hselasky@
Approved by: hselasky (mentor)
MFC after: 1 week
Sponsored by: Mellanox Technologies
The hardware queues are deep enough currently and using the DRBR and associated
callbacks only leads to more task switching in the TX path. The is also a race
setting the queue_state which can lead to hung TX rings.
Submitted by: hselasky@
Approved by: hselasky (mentor)
MFC after: 1 week
Sponsored by: Mellanox Technologies
When acting as a VF it is required to add steering rules for all unicast
addresses. Even if promiscious mode is selected. Else incoming data packets
will be dropped.
MFC after: 3 days
Approved by: re (gjb)
Sponsored by: Mellanox Technologies
This fixes 32-bit compat (no ioctl command defintions are required
as struct ifreq is the same size). This is believed to be sufficent to
fully support ifconfig on 32-bit systems.
Reviewed by: kib
Obtained from: CheriBSD
MFC after: 1 week
Relnotes: yes
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D14900
These were made redundant in r325841.
Reviewed by: hselasky
MFC after: 1 week (hselasky will MFC)
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D13401
Background:
The coming ibcore update forces an update of mlx4ib(4) which in turn requires
an updated mlx4 core module. This also affects the mlx4en(4) module because
commonly used APIs are updated. This commit is a middle step updating the
mlx4 modules towards the new ibcore.
This change contains no major new features.
Changes in mlx4:
a) Improved error handling when mlx4 PCI devices are
detached inside VMs.
b) Major update of codebase towards Linux 4.9.
Changes in mlx4ib(4):
a) Minimal changes needed in order to compile using the
updated mlx4 core APIs.
Changes in mlx4en(4):
a) Update flow steering code in mlx4en to use new APIs for
registering MAC addresses and IP addresses.
b) Update all statistics counters to be 64-bit.
c) Minimal changes needed in order to compile using the
updated mlx4 core APIs.
Sponsored by: Mellanox Technologies
MFC after: 1 week
Follow up from r324201 to fix compilation with gcc, which complains
about non-ICE case expressions.
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D12675
is in VF or SRIOV mode typically in a virtual machine environment.
Submitted by: Sepherosa Ziehau <sephe@dragonflybsd.org>
MFC after: 3 days
Sponsored by: Mellanox Technologies
The m_defrag() function can only defrag mbuf chains which have a valid
mbuf packet header. In r291699 when the mlx4en(4) driver was converted
into using BUSDMA(9), the call to m_defrag() was moved after the part
of the transmit routine which strips the header from the mbuf chain.
This effectivly disabled the mbuf defrag mechanism and such packets
simply got dropped.
This patch removes the stripping of mbufs from a chain and loads all
mbufs using busdma. If busdma finds there are no segments, unload
the DMA map and free the mbuf right away, because that means all
data in the mbuf has been inlined in the TX ring. Else proceed
as usual.
Add a per-ring rounter for the number of defrag attempts and
make sure the oversized_packets counter gets zeroed while at it.
The counters are per-ring to avoid excessive cache misses in the
TX path.
Submitted by: mjoras@
Differential Revision: https://reviews.freebsd.org/D11683
MFC after: 1 week
Sponsored by: Mellanox Technologies
mlx4en network interfaces. This prevents infinite unit number growth
typically when the mlx4en driver is used inside virtual machines which
support runtime PCI attach and detach.
MFC after: 3 days
Sponsored by: Mellanox Technologies
mlx4en(4) driver in SRIOV mode.
Place a copy of the destination MAC address in the send WQE only under
SRIOV/eSwitch configuration or when the device is in selftest. This
allows communication between functions on the same host.
PR: 216493
MFC after: 3 days
Sponsored by: Mellanox Technologies
driver. Else if the port is up the resource might still be busy and
the MTT free will fail.
PR: 216493
MFC after: 3 days
Sponsored by: Mellanox Technologies
like other PCI network drivers. The sys/ofed directory is now mainly
reserved for generic infiniband code, with exception of the mthca driver.
- Add new manual page, mlx4en(4), describing how to configure and load
mlx4en.
- All relevant driver C-files are now prefixed mlx4, mlx4_en and
mlx4_ib respectivly to avoid object filename collisions when compiling
the kernel. This also fixes an issue with proper dependency file
generation for the C-files in question.
- Device mlxen is now device mlx4en and depends on device mlx4, see
mlx4en(4). Only the network device name remains unchanged.
- The mlx4 and mlx4en modules are now built by default on i386 and
amd64 targets. Only building the mlx4ib module depends on
WITH_OFED=YES .
Sponsored by: Mellanox Technologies
