provisioned for NIC_ETHOFLD and the kernel has option RATELIMIT.
It is possible to use the chip's offload queues for normal NIC Tx and
not just TOE Tx. The difference is that these queues support out of
order processing of work requests and have a per-"flowid" mechanism for
tracking credits between the driver and hardware. This allows Tx for
any number of flows bound to different rate limits to be submitted to a
single Tx queue and the work requests for slow flows won't cause HOL
blocking for the rest.
Sponsored by: Chelsio Communications
by default.
This is the first of a series of commits that will add support for
RATELIMIT kernel option to the base if_cxgbe driver, for use with
ordinary NIC traffic "flows". RATELIMIT is already supported by t4_tom
for the fully-offloaded TCP connections that it handles.
Sponsored by: Chelsio Communications
if an error is reported while pre-processing the configuration file that
the driver attempted to use.
Also, allow the user to explicitly use the built-in configuration with
hw.cxgbe.config_file="built-in"
MFC after: 2 days
Sponsored by: Chelsio Communications
This had been the default behavior but was changed accidentally as part
of the recent iw_cxgbe+OFED overhaul. Fix another bug in that change
while here: the global knob affects all the adapters in the system and
should be left alone by per-adapter code.
MFC after: 3 days
Sponsored by: Chelsio Communications
request, which can be used to configure hardware NAT and swapmac.
All firmwares released after Jan 2017 support this work request.
Sponsored by: Chelsio Communications
These filters reside in the card's memory instead of its TCAM and can be
configured via a new "hashfilter" subcommand in cxgbetool. Hash and
normal TCAM filters can be used together. The hardware does an
exact-match of packet fields for hash filters, unlike the masked match
performed for TCAM filters. Any T5/T6 card with memory can support at
least half a million hash filters. The sample config file with the
driver configures 512K of these, it is possible to double this to 1
million+ in some cases.
The chip does an exact-match of fields of incoming datagrams with hash
filters and performs the action configured for the filter if it matches.
The fields to match are specified in a "filter mask" in the firmware
config file. The filter mask always includes the 5-tuple (sip, dip,
sport, dport, ipproto). It can, optionally, also include any subset of
the filter mode (see filterMode and filterMask in the firmware config
file).
For example:
filterMode = fragmentation, mpshittype, protocol, vlan, port, fcoe
filterMask = protocol, port, vlan
Exact values of the 5-tuple, the physical port, and VLAN tag would have
to be provided while setting up a hash filter with the chip
configuration above.
Hash filters support all actions supported by TCAM filters. A packet
that hits a hash filter can be dropped, let through (with optional
steering to a specific queue or RSS region), switched out of another
port (with optional L2 rewrite of DMAC, SMAC, VLAN tag), or get NAT'ed.
(Support for some of these will show up in the driver in a follow-up
commit very shortly).
Sponsored by: Chelsio Communications
These firmwares and the following list of changes are from the public
ChelsioUwire-3.7.1.0 release.
T6 Firmware
================================================================================
Version : 1.19.1.0
Date : 04/23/2018
================================================================================
Fixes
-----
BASE:
- Fixed traffic stall when rate-limit is modified while running traffic.
- Fixes a firmware crash in FW_ETH_TX_EO_WR handling.
- Fixes host DCB support when FW_PORT_CMD is used.
ETH:
- Exit Auto-Negotiation if we don't receive base page from peer within 10s.
This fixes some cases where in we keep on restarting auto negotiation without
ever exiting, resulting in link failure.
- Fixes an issue where VF packets counter were not increasing if VF packets
coalesced WR is used by driver.
OFLD:
- Kernel and user mode NVMEoF performance enhancements.
FOiSCSI:
- Fixes fw crash when trying to connect to non-existence IPv6 iSNS target.
================================================================================
Version : 1.18.9.0
Date : 03/27/2018
================================================================================
Fixes
-----
BASE:
- For Ethernet frames less than 64B, pad them with zero bytes as per IEEE spec
(RFC 894).
- Added a new parameter iqtype to FW_IQ_CMD to identify the ingress NIC or offload
queues. This fixes an issue where driver was receiving interrupt with no new
messages in queue.
- FW_PARAMS_CMD processes all the valaid paramaters and returns value 0UL for
any unknown parameter.
OFLD:
- Fixes connection failure during SRQ reuse.
- Fixes incorrect cqe in case of WRITE with immediate operation.
FOiSCSI:
- Fixes a fw crash when wrong node-id is passed to FW_FOISCSI_CTRL_WR.
FOFCoE:
- Fixes a fw hang while creating NPIV.
Enhancements
------------
ETH:
- A new WR FW_ETH_TX_PKTS_VM_WR added to support VM packet coalescing.
================================================================================
Version : 1.18.4.0
Date : 02/28/2018
================================================================================
Fixes
-----
BASE:
- Fixed Rate limiting not working for 101Mbps<=rate limit<=163Mbps range.
- Fixed starting more than 32 VMs on PF4 causing firmware hang.
ETH:
- Fixed link failure due to FEC mismatch with optics.
- Fixed link failure with link toggle stress tests.
- Only BaseR FEC is supported for 50G.
- Fixed a bug in next page handling which sometimes causes link down.
- Fixed port down due to failre to read eeprom contents of some modules.
- Fixed a bug causing adapter to fail with spider configuration.
FOiSCSI:
- Fixed a bug causing login failure when connecting to multiple targets.
Enhancements
------------
BASE:
- Added a new firmware API to retrieve the maximum temperaturethreshold for
the chip (FW_PARAM_DEV_DIAG_MAXTMPTHRESH).
ETH:
- Added support for user to contol pause negotiation during auto negotiation.
FOiSCSI:
- Added a new facility to redirect few fw events to offload rx queue
(based on driver's configration)
- Driver can ignore providing ipv6 prefix len during ipv6 address configuration.
================================================================================
Version : 1.17.14.0
Date : 12/27/2017
================================================================================
FIXES
-----
BASE:
- Fixed an FLR failure during simulteneous power up of VM.
- Fixed an issue in vlan acl which was limiting vlan range to 1024.
ETH:
- Enabled RS-FEC for 25G active copper cable and 25GBASE-SR.
- When auto negotiation is enabled, final pause settings are resolved
based on local and peer pause settings.
- Handle NACK for an I2C access.
OFLD
- Fixed rdma connection cleanup in SO adpater.
- Fixed rdma connections during read invalidate.
- Fixed the crash when invalid BW rate is passed to fw.
- Fixed the traffic hang when BW allocation is changed from switch during traffic.
FOFCoE:
- Fixed an issue where initiator remains logged-in even after LLDP is disabled
on switch.
ENHANCEMENTS
------------
BASE:
- Added support for 248 VFs.
- Added fw driver periodic calibration for MC.
ETH:
- Added XLAUI port type support.
- Added raw mac entry deletion support (FW_VI_MAC_ID_BASED_FREE).
OFLD:
- Inline IPSec support added (flag F_FW_ULPTX_WR_DATA indicates the inline
IPSec WR).
- New work request FW_RI_RDMA_WRITE_CMPL_WR (write with completion) added to
T5 Firmware
================================================================================
Version : 1.19.1.0
Date : 04/23/2018
================================================================================
Fixes
-----
BASE:
- Fixes a firmware crash in FW_ETH_TX_EO_WR handling.
- Fixes host DCB support when FW_PORT_CMD is used.
ETH:
- Fixes an issue where VF packets counter were not increasing if VF packets
coalesced WR is used by driver.
OFLD:
- Fixes an issue where fw hangs if max traffic rate passed is 0.
FOiSCSI:
- Fixes fw crash when trying to connect to non-existence IPv6 iSNS target.
================================================================================
Version : 1.18.9.0
Date : 03/27/2018
================================================================================
Fixes
-----
BASE:
- For Ethernet frames less than 64B, pad them with zero bytes as per IEEE spec
(RFC 894).
- Added a new parameter iqtype to FW_IQ_CMD to identify the ingress NIC or offload
queues. This fixes an issue where driver was receiving interrupt with no new
messages in queue.
ETH:
- Pad the Ethernet packets of size less than 64B with zeros. This fixes the
incorrect checksum generation of packets less then 64B.
FOiSCSI:
- Fixes a fw crash when wrong node-id is passed to FW_FOISCSI_CTRL_WR.
FOFCoE:
- Fixes a fw hang while creating NPIV.
Enhancements
------------
ETH:
- A new WR FW_ETH_TX_PKTS_VM_WR added to support VM packet coalescing.
================================================================================
Version : 1.18.4.0
Date : 02/28/2018
================================================================================
Fixes
-----
BASE:
- Fixed starting more than 32 VMs on PF4 causing firmware hang.
FOiSCSI:
- Fixed a bug causing login failure when connecting to multiple targets.
Enhancements
------------
BASE:
- Added a new firmware API to retrieve the maximum temperaturethreshold for
the chip (FW_PARAM_DEV_DIAG_MAXTMPTHRESH).
ETH:
- Added support for user to contol pause negotiation during auto negotiation.
FOiSCSI:
- Added a new facility to redirect few fw events to offload rx queue
(based on driver's configration)
- Driver can ignore providing ipv6 prefix len during ipv6 address configuration.
================================================================================
Version : 1.17.14.0
Date : 12/27/2017
================================================================================
FIXES
-----
BASE:
- Fixed an issue in vlan acl which was limiting vlan range to 1024.
ETH:
- Corrected lane inversion logic.
- Fixed improper LED behavior in T580 cards.
- When auto negotiation is enabled, final pause settings are resolved
based on local and peer pause settings.
- Handle NACK for an I2C access.
OFLD
- Fixed rdma connections during read invalidate.
FOiSCSI:
- Fixed a connections hang when link is toggled frequently.
FOFCoE:
- Fixed an issue where initiator remains logged-in even after LLDP is disabled
on switch.
ENHANCEMENTS
------------
BASE:
- Added support for 124 VFs.
ETH:
- Added XLAUI port type support.
- Added raw mac entry deletion support (FW_VI_MAC_ID_BASED_FREE).
OFLD:
- New work request FW_RI_RDMA_WRITE_CMPL_WR (write with completion) added to
optimize NVMEoF write.
T4 Firmware
================================================================================
Version : 1.19.1.0
Date : 04/23/2018
================================================================================
Fixes
-----
BASE:
- Fixes a firmware crash in FW_ETH_TX_EO_WR handling.
- Fixes host DCB support when FW_PORT_CMD is used.
FOiSCSI:
- Fixes fw crash when trying to connect to non-existence IPv6 iSNS target.
================================================================================
Version : 1.18.9.0
Date : 03/27/2018
================================================================================
Fixes
-----
BASE:
- Added a new paramter iqtype to FW_IQ_CMD to identify the ingress NIC or
offload queues. This fixes an issue where driver was receiving interrupt with
no new messages in queue.
FOFCoE:
- Fixes a fw hang while creating NPIV.
Enhancements
------------
ETH:
- A new WR FW_ETH_TX_PKTS_VM_WR added to support VM packet coalescing.
================================================================================
Version : 1.18.4.0
Date : 02/28/2018
================================================================================
Enhancements
------------
BASE:
- Added a new firmware API to retrieve the maximum temperaturethreshold for
the chip (FW_PARAM_DEV_DIAG_MAXTMPTHRESH).
================================================================================
Version : 1.17.14.0
Date : 12/27/2017
================================================================================
FIXES
-----
BASE:
- Fixed an issue in vlan acl which was limiting vlan range to 1024.
MFC after: 3 days
Sponsored by: Chelsio Communications
Filter work requests are submitted in the nexus cdev's ioctl which then
blocks waiting for a reply. If driver detach runs in this state and
disables interrupts the ioctl will never complete and detach will hang
in destroy_cdev.
Sponsored by: Chelsio Communications
Reserve 3b in the 14b atid to identify the owner and use it to dispatch
the CPL. This allows all CPLs that use an atid to be used as shared
CPLs, although ACT_OPEN_RPL is the only one being converted in this
revision.
Sponsored by: Chelsio Communications
intended recipient of a CPL when it can't be determined solely from the
opcode. Retire the per-queue handlers for such CPLs in favor of the new
scheme.
Sponsored by: Chelsio Communications
COP allows fine-grained control on whether to offload a TCP connection
using t4_tom, and what settings to apply to a connection selected for
offload. t4_tom must still be loaded and IFCAP_TOE must still be
enabled for full TCP offload to take place on an interface. The
difference is that IFCAP_TOE used to be the only knob and would enable
TOE for all new connections on the inteface, but now the driver will
also consult the COP, if any, before offloading to the hardware TOE.
A policy is a plain text file with any number of rules, one per line.
Each rule has a "match" part consisting of a socket-type (L = listen,
A = active open, P = passive open, D = don't care) and a pcap-filter(7)
expression, and a "settings" part that specifies whether to offload the
connection or not and the parameters to use if so. The general format
of a rule is: [socket-type] expr => settings
Example. See cxgbetool(8) for more information.
[L] ip && port http => offload
[L] port 443 => !offload
[L] port ssh => offload
[P] src net 192.168/16 && dst port ssh => offload !nagle !timestamp cong newreno
[P] dst port ssh => offload !nagle ecn cong tahoe
[P] dst port http => offload
[A] dst port 443 => offload tls
[A] dst net 192.168/16 => offload !timestamp cong highspeed
The driver processes the rules for each new listen, active open, or
passive open and stops at the first match. There is an implicit rule at
the end of every policy that prohibits offload when no rule in the
policy matches:
[D] all => !offload
This is a reworked and expanded version of a patch submitted by
Krishnamraju Eraparaju @ Chelsio.
Sponsored by: Chelsio Communications
IFF_UP and IFF_DRV_RUNNING out of sync. ifhwioctl in the kernel pays no
attention to the return code from the driver ioctl during SIOCSIFFLAGS
so these messages are the only indication that the ioctl was called but
failed.
MFC after: 1 week
Sponsored by: Chelsio Communications
The TCB is read using a memory window right now. A better alternate to
get self-consistent, uncached information would be to use a GET_TCB
request but waiting for a reply from hw while holding non-sleepable
locks is quite inconvenient.
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D14817
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
This fixes an avoidable EINVAL when the user tries to disable AN after
the port is initialized but l1cfg doesn't have a valid speed to use.
MFC after: 1 week
Sponsored by: Chelsio Communications
The TOE engine in Chelsio T6 adapters supports offloading of TLS
encryption and TCP segmentation for offloaded connections. Sockets
using TLS are required to use a set of custom socket options to upload
RX and TX keys to the NIC and to enable RX processing. Currently
these socket options are implemented as TCP options in the vendor
specific range. A patched OpenSSL library will be made available in a
port / package for use with the TLS TOE support.
TOE sockets can either offload both transmit and reception of TLS
records or just transmit. TLS offload (both RX and TX) is enabled by
setting the dev.t6nex.<x>.tls sysctl to 1 and requires TOE to be
enabled on the relevant interface. Transmit offload can be used on
any "normal" or TLS TOE socket by using the custom socket option to
program a transmit key. This permits most TOE sockets to
transparently offload TLS when applications use a patched SSL library
(e.g. using LD_LIBRARY_PATH to request use of a patched OpenSSL
library). Receive offload can only be used with TOE sockets using the
TLS mode. The dev.t6nex.0.toe.tls_rx_ports sysctl can be set to a
list of TCP port numbers. Any connection with either a local or
remote port number in that list will be created as a TLS socket rather
than a plain TOE socket. Note that although this sysctl accepts an
arbitrary list of port numbers, the sysctl(8) tool is only able to set
sysctl nodes to a single value. A TLS socket will hang without
receiving data if used by an application that is not using a patched
SSL library. Thus, the tls_rx_ports node should be used with care.
For a server mostly concerned with offloading TLS transmit, this node
is not needed as plain TOE sockets will fall back to software crypto
when using an unpatched SSL library.
New per-interface statistics nodes are added giving counts of TLS
packets and payload bytes (payload bytes do not include TLS headers or
authentication tags/MACs) offloaded via the TOE engine, e.g.:
dev.cc.0.stats.rx_tls_octets: 149
dev.cc.0.stats.rx_tls_records: 13
dev.cc.0.stats.tx_tls_octets: 26501823
dev.cc.0.stats.tx_tls_records: 1620
TLS transmit work requests are constructed by a new variant of
t4_push_frames() called t4_push_tls_records() in tom/t4_tls.c.
TLS transmit work requests require a buffer containing IVs. If the
IVs are too large to fit into the work request, a separate buffer is
allocated when constructing a work request. This buffer is associated
with the transmit descriptor and freed when the descriptor is ACKed by
the adapter.
Received TLS frames use two new CPL messages. The first message is a
CPL_TLS_DATA containing the decryped payload of a single TLS record.
The handler places the mbuf containing the received payload on an
mbufq in the TOE pcb. The second message is a CPL_RX_TLS_CMP message
which includes a copy of the TLS header and indicates if there were
any errors. The handler for this message places the TLS header into
the socket buffer followed by the saved mbuf with the payload data.
Both of these handlers are contained in tom/t4_tls.c.
A few routines were exposed from t4_cpl_io.c for use by t4_tls.c
including send_rx_credits(), a new send_rx_modulate(), and
t4_close_conn().
TLS keys for both transmit and receive are stored in onboard memory
in the NIC in the "TLS keys" memory region.
In some cases a TLS socket can hang with pending data available in the
NIC that is not delivered to the host. As a workaround, TLS sockets
are more aggressive about sending CPL_RX_DATA_ACK messages anytime that
any data is read from a TLS socket. In addition, a fallback timer will
periodically send CPL_RX_DATA_ACK messages to the NIC for connections
that are still in the handshake phase. Once the connection has
finished the handshake and programmed RX keys via the socket option,
the timer is stopped.
A new function select_ulp_mode() is used to determine what sub-mode a
given TOE socket should use (plain TOE, DDP, or TLS). The existing
set_tcpddp_ulp_mode() function has been renamed to set_ulp_mode() and
handles initialization of TLS-specific state when necessary in
addition to DDP-specific state.
Since TLS sockets do not receive individual TCP segments but always
receive full TLS records, they can receive more data than is available
in the current window (e.g. if a 16k TLS record is received but the
socket buffer is itself 16k). To cope with this, just drop the window
to 0 when this happens, but track the overage and "eat" the overage as
it is read from the socket buffer not opening the window (or adding
rx_credits) for the overage bytes.
Reviewed by: np (earlier version)
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D14529
The parameters describe how much of the adapter's memory is reserved for
storing TLS keys. The 'meminfo' sysctl now lists this region of adapter
memory as 'TLS keys' if present.
Sponsored by: Chelsio Communications
leaves the firmware event queue (fwq) as the only queue that can take
interrupts for others.
This simplifies cfg_itype_and_nqueues and queue allocation in the driver
at the cost of a little (never?) used configuration. It also allows
service_iq to be split into two specialized variants in the future.
MFC after: 2 months
Sponsored by: Chelsio Communications
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.
The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
tunables. Add num_vis to the intrs_and_queues structure as it affects
the number of interrupts requested and queues created. In future
cfg_itype_and_nqueues might lower it incrementally instead of going
straight to 1 when enough interrupts aren't available.
Sponsored by: Chelsio Communications
different from hardware defaults. The congestion channel map, which is
still fixed, needs to be tracked separately now. Change the congestion
setting for TOE rx queues to match the drivers on other OSes while here.
MFC after: 2 weeks
Sponsored by: Chelsio Communications
used by the TOE hardware for fully offloaded connections. The knob
affects new connections only.
MFC after: 2 weeks
Sponsored by: Chelsio Communications
install after full initialization, and another to disable the TCB
cache (T6+). The latter works as a tunable only.
Note that debug_flags are for debugging only and should not be set
normally.
MFC after: 1 week
Sponsored by: Chelsio Communications
creating hardware VIs.
This fixes a bad race on systems with hw.cxgbe.num_vis > 1.
Reported by: olivier@
MFC after: 1 week
Sponsored by: Chelsio Communications
the current state to determine whether to generate a link-state change
notification. This fixes a bug introduced in r321063 that caused the
driver to sometimes skip these notifications.
Reported by: Jason Eggleston @ LLNW
MFC after: 3 days
Sponsored by: Chelsio Communications
precision. These timers are already displayed in microseconds in the
sysctl MIB. Add variables to track these tunables while here.
MFC after: 3 days
Sponsored by: Chelsio Communications
debug (cudbg) code, hooked up to the main driver via an ioctl.
The ioctl can be used to collect the chip's internal state in a
compressed dump file. These dumps can be decoded with the "view"
component of cudbg.
Obtained from: Chelsio Communications
MFC after: 2 months
Sponsored by: Chelsio Communications
and keepalive in the sysctl MIB. Provide tunables to change some of
these parameters. These are supposed to be setup by the firmware so
these tunables are for experimentation only.
MFC after: 2 weeks
Sponsored by: Chelsio Communications
doesn't seem to have one. This lets the driver recover automatically
from incomplete firmware upgrades (panic, reboot, power loss, etc. in
the middle of an upgrade).
MFC after: 2 weeks
Sponsored by: Chelsio Communications
- Deal with changes to port_type, and not just port_mod when a
transceiver is changed. This fixes hot swapping of transceivers of
different types (QSFP+ or QSA or QSFP28 in a QSFP28 port, SFP+ or
SFP28 in a SFP28 port, etc.).
- Always refresh media information for ifconfig if the port is down.
The firmware does not generate tranceiver-change interrupts unless at
least one VI is enabled on the physical port. Before this change
ifconfig diplayed potentially stale information for ports that were
administratively down.
- Always recalculate and reapply L1 config on a transceiver change.
- Display PAUSE settings in ifconfig. The driver sysctls for this
continue to work as well.
MFC after: 2 weeks
Sponsored by: Chelsio Communications
Invoke any identify routines of child drivers during attach before attaching
children, and delete any remaining devices after deleting ports.
MFC after: 1 month
Sponsored by: Chelsio Communications
- Do not leak the adapter lock in sysctl_autoneg.
- Accept only 0 or 1 as valid settings for autonegotiation.
- A fixed speed must be requested by the driver when autonegotiation is
disabled otherwise the firmware will reject the l1cfg command. Use
the top speed supported by the port for now.
MFC after: 3 days
Sponsored by: Chelsio Communications
- Create a new file, t4_sched.c, and move all of the code related to
traffic management from t4_main.c and t4_sge.c to this file.
- Track both Channel Rate Limiter (ch_rl) and Class Rate Limiter (cl_rl)
parameters in the PF driver.
- Initialize all the cl_rl limiters with somewhat arbitrary default
rates and provide routines to update them on the fly.
- Provide routines to reserve and release traffic classes.
MFC after: 1 month
Sponsored by: Chelsio Communications
'-n' to tell the driver to create _up to_ 'n' queues if enough cores are
available. For example, setting hw.cxgbe.nrxq10g="-32" will result in
16 queues if the system has 16 cores, 32 if it has 32.
There is no change in the default number of queues of any type.
MFC after: 1 week
Sponsored by: Chelsio Communications
- Update struct link_settings and associated shared code.
- Add tunables to control FEC and autonegotiation. All ports inherit
these values as their initial settings.
hw.cxgbe.fec
hw.cxgbe.autoneg
- Add per-port sysctls to control FEC and autonegotiation. These can be
modified at any time.
dev.<port>.<n>.fec
dev.<port>.<n>.autoneg
MFC after: 3 days
Sponsored by: Chelsio Communications
come up as 't6nex' nexus devices with 'cc' ports hanging off them.
The T6 firmware and configuration files will be added as soon as they
are released. For now the driver will try to work with whatever
firmware and configuration is on the card's flash.
Sponsored by: Chelsio Communications
The cxgbev/cxlv driver supports Virtual Function devices for Chelsio
T4 and T4 adapters. The VF devices share most of their code with the
existing PF4 driver (cxgbe/cxl) and as such the VF device driver
currently depends on the PF4 driver.
Similar to the cxgbe/cxl drivers, the VF driver includes a t4vf/t5vf
PCI device driver that attaches to the VF device. It then creates
child cxgbev/cxlv devices representing ports assigned to the VF.
By default, the PF driver assigns a single port to each VF.
t4vf_hw.c contains VF-specific routines from the shared code used to
fetch VF-specific parameters from the firmware.
t4_vf.c contains the VF-specific PCI device driver and includes its
own attach routine.
VF devices are required to use a different firmware request when
transmitting packets (which in turn requires a different CPL message
to encapsulate messages). This alternate firmware request does not
permit chaining multiple packets in a single message, so each packet
results in a firmware request. In addition, the different CPL message
requires more detailed information when enabling hardware checksums,
so parse_pkt() on VF devices must examine L2 and L3 headers for all
packets (not just TSO packets) for VF devices. Finally, L2 checksums
on non-UDP/non-TCP packets do not work reliably (the firmware trashes
the IPv4 fragment field), so IPv4 checksums for such packets are
calculated in software.
Most of the other changes in the non-VF-specific code are to expose
various variables and functions private to the PF driver so that they
can be used by the VF driver.
Note that a limited subset of cxgbetool functions are supported on VF
devices including register dumps, scheduler classes, and clearing of
statistics. In addition, TOE is not supported on VF devices, only for
the PF interfaces.
Reviewed by: np
MFC after: 2 months
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D7599
routines available in t4_tom to manage the iSCSI DDP page pod region.
This adds the ability to use multiple DDP page sizes to the iSCSI
driver, among other improvements.
Sponsored by: Chelsio Communications
This permits a single early return for VF devices in the routines that
add sysctl nodes.
Reviewed by: np
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D7512
- Add handling of VF register sets to t4_get_regs_len() and t4_get_regs().
- While here, use t4_get_regs_len() in the ioctl handler for regdump
instead of inlining it.
Reviewed by: np
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D7484
Add fields to hold the SGE control register and free list buffer sizes to
the sge_params structure. Populate these new fields in
t4_init_sge_params() for PF devices and change t4_read_chip_settings() to
pull these values out of the params structure instead of reading
registers directly. This will permit t4_read_chip_settings() to be reused
for VF devices which cannot read SGE registers directly.
While here, move the call to t4_init_sge_params() to
get_params__post_init(). The VF driver will populate the SGE parameters
structure via a different method before calling t4_read_chip_settings().
Reviewed by: np
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D7476
Chelsio T4/T5 adapters are multifunction cards. The main driver uses
physical function 4 (PF4). However, VF devices for SR-IOV are only
supported on physical functions 0 through 3, where PF0 creates VFs tied
to port 0, etc. The t4iov/t5iov driver was previously added to
create VF devices for ports that are present on each adapter. This
change uses the recently added pci_iov_attach_name() function to
name the character device in /dev/iov after the associated port on
the card (e.g. /dev/iov/cxl0 is used to create VFs that share the
cxl0 port). With this in place, mark the t4iov/t5iov devices quiet
to prevent them from cluttering dmesg.
Reviewed by: rstone
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D7402
VF devices use a different register layout than PF devices. Storing
the offset in a value in the softc allows code to be shared between the
PF and VF drivers.
Reviewed by: np
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D7389
- Remove null open/close methods.
- Don't set d_flags to 0 explicitly.
- Remove t5_cdevsw as the .d_name member isn't really used and doesn't
warrant a separate cdevsw just for the name.
- Use ENOTTY as the error value for an unknown ioctl request.
- Use make_dev_s() to close race with setting si_drv1.
Sponsored by: Chelsio Communications
AIO write requests for a TOE socket on a Chelsio T4+ adapter can now
DMA directly from the user-supplied buffer. This is implemented by
wiring the pages backing the user-supplied buffer and queueing special
mbufs backed by raw VM pages to the socket buffer. The TOE code
recognizes these special mbufs and builds a sglist from the VM page
array associated with the mbuf when queueing a work request to the TOE.
Because these mbufs do not have an associated virtual address, m_data
is not valid. Thus, the AIO handler does not invoke sosend() directly
for these mbufs but instead inlines portions of sosend_generic() and
tcp_usr_send().
An aiotx_buffer structure is used to describe the user buffer (e.g.
it holds the array of VM pages and a reference to the AIO job). The
special mbufs reference this structure via m_ext. Note that a single
job might be split across multiple mbufs (e.g. if it is larger than
the socket buffer size). The 'ext_arg2' member of each mbuf gives an
offset relative to the backing aiotx_buffer. The AIO job associated
with an aiotx_buffer structure is completed when the last reference to
the structure is released.
Zero-copy aio_write()'s for connections associated with a given
adapter can be enabled/disabled at runtime via the
'dev.t[45]nex.N.toe.tx_zcopy' sysctl.
MFC after: 1 month
Relnotes: yes
Sponsored by: Chelsio Communications
returning EAGAIN if they aren't available when the user tries to program
a filter. Do this after validating the filter so that the driver
doesn't bring up the queues if it doesn't have to.
Chelsio NICs are a bit unique compared to some other NICs in that they
expose different functionality on different physical functions. In
particular, PF4 is used to manage the NIC interfaces ('t4nex' and 't5nex').
However, PF4 is not able to create VF devices. Instead, VFs are only
supported by physical functions 0 through 3. This commit adds 't4iov'
and 't5iov' drivers that attach to PF0-3.
One extra wrinkle is that the iov devices cannot enable SR-IOV until the
firwmare has been initialized by the main PF4 driver. To handle this
case, a new t4_if kobj interface has been added to permit cross-calls
between the PF drivers. The PF4 driver notifies sibling drivers when it
is fully attached. It also requests sibling drivers to detach before it
detaches. Sibling drivers query the PF4 driver during their attach
routine to see if it is attached. If not, the sibling drivers defer
their attach actions until the PF4 driver informs them it is attached.
VF devices are associated with a single port on the NIC. VF devices
created from PF0 are associated with the first port on the NIC, VFs
from PF1 are associated with the second port, etc. VF devices can
only be created from a PF device that has an associated port. Thus,
on a 2-port card, VFs are only supported on PF0 and PF1.
Reviewed by: np (earlier versions)
MFC after: 1 month
Sponsored by: Chelsio Communications
related to "shared" CPLs.
a) Combine t4_set_tcb_field and t4_set_tcb_field_rpl into a single
function. Allow callers to direct the response to any iq. Tidy up
set_ulp_mode_iscsi while there to use names from t4_tcb.h instead of
magic constants.
b) Remove all CPL handler tables from struct adapter. This reduces its
size by around 2KB. All handlers are now registered at MOD_LOAD instead
of attach or some kind of initialization/activation. The registration
functions do not need an adapter parameter any more.
c) Add per-iq handlers to deal with CPLs whose destination cannot be
determined solely from the opcode. There are 2 such CPLs in use right
now: SET_TCB_RPL and L2T_WRITE_RPL. The base driver continues to send
filter and L2T_WRITEs over the mgmtq and solicits the reply on fwq.
t4_tom (including the DDP code) now uses the port's ctrlq to send
L2T_WRITEs and SET_TCB_FIELDs and solicits the reply on an ofld_rxq.
fwq and ofld_rxq have different handlers that know what kind of tid to
expect in the reply. Update t4_write_l2e and callers to to support any
wrq/iq combination.
Approved by: re@ (kib@)
Sponsored by: Chelsio Communications
The interface's queues are functional after VI_INIT_DONE (which is short
of interface-up) and that's all that's needed for t4_tom to communicate
with the chip.
Approved by: re@ (gjb@)
Sponsored by: Chelsio Communications
vcxgbe/vcxl interfaces and retire the 'n' interfaces. The main
cxgbe/cxl interfaces and tunables related to them are not affected by
any of this and will continue to operate as usual.
The driver used to create an additional 'n' interface for every
cxgbe/cxl interface if "device netmap" was in the kernel. The 'n'
interface shared the wire with the main interface but was otherwise
autonomous (with its own MAC address, etc.). It did not have normal
tx/rx but had a specialized netmap-only data path. r291665 added
another set of virtual interfaces (the 'v' interfaces) to the driver.
These had normal tx/rx but no netmap support.
This revision consolidates the features of both the interfaces into the
'v' interface which now has a normal data path, TOE support, and native
netmap support. The 'v' interfaces need to be created explicitly with
the hw.cxgbe.num_vis tunable. This means "device netmap" will not
result in the automatic creation of any virtual interfaces.
The following tunables can be used to override the default number of
queues allocated for each 'v' interface. nofld* = 0 will disable TOE on
the virtual interface and nnm* = 0 to will disable native netmap
support.
# number of normal NIC queues
hw.cxgbe.ntxq_vi
hw.cxgbe.nrxq_vi
# number of TOE queues
hw.cxgbe.nofldtxq_vi
hw.cxgbe.nofldrxq_vi
# number of netmap queues
hw.cxgbe.nnmtxq_vi
hw.cxgbe.nnmrxq_vi
hw.cxgbe.nnm{t,r}xq{10,1}g tunables have been removed.
--- tl;dr version ---
The workflow for netmap on cxgbe starting with FreeBSD 11 is:
1) "device netmap" in the kernel config.
2) "hw.cxgbe.num_vis=2" in loader.conf. num_vis > 2 is ok too, you'll
end up with multiple autonomous netmap-capable interfaces for every
port.
3) "dmesg | grep vcxl | grep netmap" to verify that the interface has
netmap queues.
4) Use any of the 'v' interfaces for netmap. pkt-gen -i vcxl<n>... .
One major improvement is that the netmap interface has a normal data
path as expected.
5) Just ignore the cxl interfaces if you want to use netmap only. No
need to bring them up. The vcxl interfaces are completely independent
and everything should just work.
---------------------
Approved by: re@ (gjb@)
Relnotes: Yes
Sponsored by: Chelsio Communications
- Validate the scheduling class against the actual limit (which is chip
specific) instead of a magic number.
- Return an error if an attempt is made to manipulate the tx queues of a
VI that hasn't been initialized.
Sponsored by: Chelsio Communications
Chelsio's TCP offload engine supports direct DMA of received TCP payload
into wired user buffers. This feature is known as Direct-Data Placement.
However, to scale well the adapter needs to prepare buffers for DDP
before data arrives. aio_read() is more amenable to this requirement than
read() as applications often call read() only after data is available in
the socket buffer.
When DDP is enabled, TOE sockets use the recently added pru_aio_queue
protocol hook to claim aio_read(2) requests instead of letting them use
the default AIO socket logic. The DDP feature supports scheduling DMA
to two buffers at a time so that the second buffer is ready for use
after the first buffer is filled. The aio/DDP code optimizes the case
of an application ping-ponging between two buffers (similar to the
zero-copy bpf(4) code) by keeping the two most recently used AIO buffers
wired. If a buffer is reused, the aio/DDP code is able to reuse the
vm_page_t array as well as page pod mappings (a kind of MMU mapping the
Chelsio NIC uses to describe user buffers). The generation of the
vmspace of the calling process is used in conjunction with the user
buffer's address and length to determine if a user buffer matches a
previously used buffer. If an application queues a buffer for AIO that
does not match a previously used buffer then the least recently used
buffer is unwired before the new buffer is wired. This ensures that no
more than two user buffers per socket are ever wired.
Note that this feature is best suited to applications sending a steady
stream of data vs short bursts of traffic.
Discussed with: np
Relnotes: yes
Sponsored by: Chelsio Communications
Figure out if the chip is counting PAUSE frames in the "normal" stats
and take them out if it is. This fixes a bug in the tx stats because
the default hardware behavior is different for Tx and Rx but the driver
was treating both the same way. The result was that OPACKETS, OBYTES,
and OMCASTS were under-reported (if tx_pause > 0) before this change.
Note that the mac_stats sysctl still gives you the raw value of these
statistics straight from the device registers.
defined:
sys/dev/cxgbe/t4_main.c:7474: warning: 'sysctl_tp_tick' defined but not used
sys/dev/cxgbe/t4_main.c:7505: warning: 'sysctl_tp_dack_timer' defined but not used
sys/dev/cxgbe/t4_main.c:7519: warning: 'sysctl_tp_timer' defined but not used
This just adds a bunch of #ifdef TCP_OFFLOAD in the right places.
Reviewed by: np
Differential Revision: https://reviews.freebsd.org/D5620
- Query the location of the log very early during attach. Refresh the
location later after establishing contact with the firmware.
- Save the log's location as a flat address in devlog_params.
- Use a memory window instead of backdoor access to the EDC/MC to read
the log.
which is responsible for filtering and RSS.
Add the ability to use filters that match on PF/VF (aka "VNIC id") while
here. This is mutually exclusive with filtering on outer VLAN tag with
Q-in-Q.
Sponsored by: Chelsio Communications
Move the code that reads all the parameters to t4_init_sge_params in the
shared code. Use these per-adapter values instead of globals.
Sponsored by: Chelsio Communications
- Get the list of registers to read during a regdump from the shared
code instead of the OS specific code. This follows a similar move
internally. The shared code includes the list for T6.
- Update cxgbetool to be able to decode T5 VF, T6, and T6 VF register
dumps (and catch up with some updates to T4 and T5 register decode).
Obtained from: Chelsio Communications
Sponsored by: Chelsio Communications
update to the latest internal shared code.
- Add a chip_params structure to keep track of hardware constants for
all generations of Terminators handled by cxgbe.
- Update t4_hw_pci_read_cfg4 to work with T6.
- Update the hardware debug sysctls (hidden within dev.<tNnex>.<n>.misc.*) to
work with T6. Most of the changes are in the decoders for the CIM
logic analyzer and the MPS TCAM.
- Acquire the regwin lock around indirect register accesses.
Obtained from: Chelsio Communications
Sponsored by: Chelsio Communications
code:
- Rename some CamelCase variables.
- s/t4_link_start/t4_link_l1cfg/g
- Pull in t4_get_port_type_description.
- Move t4_wait_op_done to t4_hw.c.
- Flip the order of the RDMA stats.
- Remove unsused function t4_iq_start_stop.
- Move t4_wait_op_done and t4_wait_op_done_val to t4_hw.c
Obtained from: Chelsio Communications
Each virtual interface has its own MAC address, queues, and statistics.
The dedicated netmap interfaces (ncxgbeX / ncxlX) were already implemented
as additional VIs on each port. This change allows additional non-netmap
interfaces to be configured on each port. Additional virtual interfaces
use the naming scheme vcxgbeX or vcxlX.
Additional VIs are enabled by setting the hw.cxgbe.num_vis tunable to a
value greater than 1 before loading the cxgbe(4) or cxl(4) driver.
NB: The first VI on each port is the "main" interface (cxgbeX or cxlX).
T4/T5 NICs provide a limited number of MAC addresses for each physical port.
As a result, a maximum of six VIs can be configured on each port (including
the "main" interface and the netmap interface when netmap is enabled).
One user-visible result is that when netmap is enabled, packets received
or transmitted via the netmap interface are no longer counted in the stats
for the "main" interface, but are not accounted to the netmap interface.
The netmap interfaces now also have a new-bus device and export various
information sysctl nodes via dev.n(cxgbe|cxl).X.
The cxgbetool 'clearstats' command clears the stats for all VIs on the
specified port along with the port's stats. There is currently no way to
clear the stats of an individual VI.
Reviewed by: np
MFC after: 1 month
Sponsored by: Chelsio
attributes when replying to a TLP from a Root Port. As a workaround,
disable No Snoop and Relaxed Ordering in the Root Port of each T5 adapter
during attach so that CPU-initiated requests do not contain these flags.
Note that this affects CPU-initiated requests to all devices under this
root port.
Reviewed by: np
MFC after: 1 week
Sponsored by: Chelsio
