History log of /freebsd/sys/dev/cxgbe/tom/t4_connect.c (Results 1 – 25 of 107)
Revision (<<< Hide revision tags) (Show revision tags >>>) Date Author Comments
# fef0e39f 25-Jul-2024 Navdeep Parhar <np@FreeBSD.org>

cxgbe/t4_tom: bugfixes in stop/restart.

1. Remove toepcb from the toep_list on active open failure.
2. Purge the wr_list for an L2T entry on an adpater stop.

Fixes: c1c524852f62 cxgbe/t4_tom: Imple

cxgbe/t4_tom: bugfixes in stop/restart.

1. Remove toepcb from the toep_list on active open failure.
2. Purge the wr_list for an L2T entry on an adpater stop.

Fixes: c1c524852f62 cxgbe/t4_tom: Implement uld_stop and uld_restart for ULD_TOM.
MFC after: 2 weeks
Sponsored by: Chelsio Communications

show more ...


# c1c52485 13-Jul-2024 Navdeep Parhar <np@FreeBSD.org>

cxgbe/t4_tom: Implement uld_stop and uld_restart for ULD_TOM.

This allows the adapter to be suspended or reset even when stateful TOE is
active, in some limited configurations.

The LLD has already

cxgbe/t4_tom: Implement uld_stop and uld_restart for ULD_TOM.

This allows the adapter to be suspended or reset even when stateful TOE is
active, in some limited configurations.

The LLD has already stopped the adapter hardware and all its queues by the time
these ULD routines get called. The general approach in t4_tom is to purge the
lookup tables immediately so that they are ready for operation by the time the
adapter resumes, and park all the resources left hanging by the stopped hardware
into separate "stranded" queues that can be dealt with at leisure.

Outstanding active opens, live connections, and synq entries (for connections in
the middle of the 3-way handshake) are all treated as if the hardware had
reported an abrupt error for the tid. The servers/listeners are a bit different
in that no error is reported. They're just noted as non-functional when the
hardware stops and are recreated by the driver during restart.

MFC after: 1 month
Sponsored by: Chelsio Communications

show more ...


Revision tags: release/14.1.0, release/13.3.0, release/14.0.0
# 685dc743 16-Aug-2023 Warner Losh <imp@FreeBSD.org>

sys: Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/


# 4d846d26 10-May-2023 Warner Losh <imp@FreeBSD.org>

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

show more ...


Revision tags: release/13.2.0, release/12.4.0
# 954712e8 30-May-2022 Justin Hibbits <jhibbits@FreeBSD.org>

Mechanically convert cxgb(4) and cxgbe(4) to IfAPI

Reviewed by: np
Sponsored by: Juniper Networks, Inc.
Differential Revision: https://reviews.freebsd.org/D38597


Revision tags: release/13.1.0
# 39d5cbdc 05-Jan-2022 Navdeep Parhar <np@FreeBSD.org>

cxgbe(4): Fix "set but not used [-Wunused-but-set-variable]" warnings.

MFC after: 1 week
Sponsored by: Chelsio Communications


Revision tags: release/12.3.0
# 24b98f28 23-May-2021 Navdeep Parhar <np@FreeBSD.org>

cxgbe(4): Overhaul CLIP (Compressed Local IPv6) table management.

- Process the list of local IPs once instead of once per adapter. Add
addresses from all VNETs to the driver's list but leave har

cxgbe(4): Overhaul CLIP (Compressed Local IPv6) table management.

- Process the list of local IPs once instead of once per adapter. Add
addresses from all VNETs to the driver's list but leave hardware
updates for later when the global VNET/IFADDR list locks have been
released.

- Add address to the hardware table synchronously when a CLIP entry is
requested for an address that's not already in there.

- Provide ioctls that allow userspace tools to manage addresses in the
CLIP table.

- Add a knob (hw.cxgbe.clip_db_auto) that controls whether local IPs are
automatically added to the CLIP table or not.

MFC after: 2 weeks
Sponsored by: Chelsio Communications

show more ...


Revision tags: release/13.0.0
# 15f33555 24-Mar-2021 Navdeep Parhar <np@FreeBSD.org>

cxgbe(4): Allow a T6 adapter to switch between TOE and NIC TLS mode.

The hw.cxgbe.kern_tls tunable was used for this in the past and if it
was set then all T6 adapters would be configured for NIC TL

cxgbe(4): Allow a T6 adapter to switch between TOE and NIC TLS mode.

The hw.cxgbe.kern_tls tunable was used for this in the past and if it
was set then all T6 adapters would be configured for NIC TLS operation
and could not be reconfigured for TOE without a reload. With this
change ifconfig can be used to manipulate toe and txtls caps like any
other caps. hw.cxgbe.kern_tls continues to work as usual but its
effects are not permanent any more.

* Enable nic_ktls_ofld in the default configuration file and use the
firmware instead of direct register manipulation to apply/rollback
NIC TLS configuration. This allows the driver to switch the hardware
between TOE and NIC TLS mode in a safe manner. Note that the
configuration is adapter-wide and not per-port.

* Remove the kern_tls config file as it works with 100G T6 cards only
and leads to firmware crashes with 25G cards. The configurations
included with the driver (with the exception of the FPGA configs) are
supposed to work with all adapters.

Reported by: Veeresh U.K. at Chelsio
MFC after: 2 weeks
Sponsored by: Chelsio Communications
Reviewed by: jhb@
Differential Revision: https://reviews.freebsd.org/D29291

show more ...


# 0082e479 03-Dec-2020 John Baldwin <jhb@FreeBSD.org>

Clear TLS offload mode if a TLS socket hangs without receiving data.

By default, if a TOE TLS socket stops receiving data for more than 5
seconds, revert the connection back to plain TOE mode. This

Clear TLS offload mode if a TLS socket hangs without receiving data.

By default, if a TOE TLS socket stops receiving data for more than 5
seconds, revert the connection back to plain TOE mode. This provides
a fallback if the userland SSL library does not support KTLS. In
addition, for client TLS 1.3 sockets using connect(), the TOE socket
blocks before the handshake has completed since the socket option is
only invoked for the final handshake.

The timeout defaults to 5 seconds, but can be changed at boot via the
hw.cxgbe.toe.tls_rx_timeout tunable or for an individual interface via
the dev.<nexus>.toe.tls_rx_timeout sysctl.

Reviewed by: np
MFC after: 2 weeks
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D27470

show more ...


Revision tags: release/12.2.0, release/11.4.0
# 8d6708ba 22-Apr-2020 Alexander V. Chernikov <melifaro@FreeBSD.org>

Convert TOE routing lookups to the new routing KPI.

Reviewed by: np
Differential Revision: https://reviews.freebsd.org/D24388


# 708652ac 15-Apr-2020 John Baldwin <jhb@FreeBSD.org>

Set inp_flowid's for TOE connections.

KTLS uses the flowid to distribute software encryption tasks among its
pool of worker threads. Without this change, all software KTLS
requests for TOE sockets

Set inp_flowid's for TOE connections.

KTLS uses the flowid to distribute software encryption tasks among its
pool of worker threads. Without this change, all software KTLS
requests for TOE sockets ended up on the first worker thread.

Note that the flowid for TOE sockets created via connect() is not a
hash of the 4-tuple, but is instead the id of the TOE pcb (tid). The
flowid of TOE sockets created from TOE listen sockets do use the
4-tuple RSS hash as the flowid since the firmware provides the hash in
the message containing the original SYN.

Reviewed by: np (earlier version)
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D24348

show more ...


# 93dafad5 14-Dec-2019 John Baldwin <jhb@FreeBSD.org>

Expand net epoch in the cxgbe TOE driver to satisfy assertions.

Reviewed by: np
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D22483


# bddf7343 21-Nov-2019 John Baldwin <jhb@FreeBSD.org>

NIC KTLS for Chelsio T6 adapters.

This adds support for ifnet (NIC) KTLS using Chelsio T6 adapters.
Unlike the TOE-based KTLS in r353328, NIC TLS works with non-TOE
connections.

NIC KTLS on T6 is n

NIC KTLS for Chelsio T6 adapters.

This adds support for ifnet (NIC) KTLS using Chelsio T6 adapters.
Unlike the TOE-based KTLS in r353328, NIC TLS works with non-TOE
connections.

NIC KTLS on T6 is not able to use the normal TSO (LSO) path to segment
the encrypted TLS frames output by the crypto engine. Instead, the
TOE is placed into a special setup to permit "dummy" connections to be
associated with regular sockets using KTLS. This permits using the
TOE to segment the encrypted TLS records. However, this approach does
have some limitations:

1) Regular TOE sockets cannot be used when the TOE is in this special
mode. One can use either TOE and TOE-based KTLS or NIC KTLS, but
not both at the same time.

2) In NIC KTLS mode, the TOE is only able to accept a per-connection
timestamp offset that varies in the upper 4 bits. Put another way,
only connections whose timestamp offset has the 28 lower bits
cleared can use NIC KTLS and generate correct timestamps. The
driver will refuse to enable NIC KTLS on connections with a
timestamp offset with any of the lower 28 bits set. To use NIC
KTLS, users can either disable TCP timestamps by setting the
net.inet.tcp.rfc1323 sysctl to 0, or apply a local patch to the
tcp_new_ts_offset() function to clear the lower 28 bits of the
generated offset.

3) Because the TCP segmentation relies on fields mirrored in a TCB in
the TOE, not all fields in a TCP packet can be sent in the TCP
segments generated from a TLS record. Specifically, for packets
containing TCP options other than timestamps, the driver will
inject an "empty" TCP packet holding the requested options (e.g. a
SACK scoreboard) along with the segments from the TLS record.
These empty TCP packets are counted by the
dev.cc.N.txq.M.kern_tls_options sysctls.

Unlike TOE TLS which is able to buffer encrypted TLS records in
on-card memory to handle retransmits, NIC KTLS must re-encrypt TLS
records for retransmit requests as well as non-retransmit requests
that do not include the start of a TLS record but do include the
trailer. The T6 NIC KTLS code tries to optimize some of the cases for
requests to transmit partial TLS records. In particular it attempts
to minimize sending "waste" bytes that have to be given as input to
the crypto engine but are not needed on the wire to satisfy mbufs sent
from the TCP stack down to the driver.

TCP packets for TLS requests are broken down into the following
classes (with associated counters):

- Mbufs that send an entire TLS record in full do not have any waste
bytes (dev.cc.N.txq.M.kern_tls_full).

- Mbufs that send a short TLS record that ends before the end of the
trailer (dev.cc.N.txq.M.kern_tls_short). For sockets using AES-CBC,
the encryption must always start at the beginning, so if the mbuf
starts at an offset into the TLS record, the offset bytes will be
"waste" bytes. For sockets using AES-GCM, the encryption can start
at the 16 byte block before the starting offset capping the waste at
15 bytes.

- Mbufs that send a partial TLS record that has a non-zero starting
offset but ends at the end of the trailer
(dev.cc.N.txq.M.kern_tls_partial). In order to compute the
authentication hash stored in the trailer, the entire TLS record
must be sent as input to the crypto engine, so the bytes before the
offset are always "waste" bytes.

In addition, other per-txq sysctls are provided:

- dev.cc.N.txq.M.kern_tls_cbc: Count of sockets sent via this txq
using AES-CBC.

- dev.cc.N.txq.M.kern_tls_gcm: Count of sockets sent via this txq
using AES-GCM.

- dev.cc.N.txq.M.kern_tls_fin: Count of empty FIN-only packets sent to
compensate for the TOE engine not being able to set FIN on the last
segment of a TLS record if the TLS record mbuf had FIN set.

- dev.cc.N.txq.M.kern_tls_records: Count of TLS records sent via this
txq including full, short, and partial records.

- dev.cc.N.txq.M.kern_tls_octets: Count of non-waste bytes (TLS header
and payload) sent for TLS record requests.

- dev.cc.N.txq.M.kern_tls_waste: Count of waste bytes sent for TLS
record requests.

To enable NIC KTLS with T6, set the following tunables prior to
loading the cxgbe(4) driver:

hw.cxgbe.config_file=kern_tls
hw.cxgbe.kern_tls=1

Reviewed by: np
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D21962

show more ...


# 1a496125 07-Nov-2019 Gleb Smirnoff <glebius@FreeBSD.org>

Mechanically convert INP_INFO_RLOCK() to NET_EPOCH_ENTER().
Remove few outdated comments and extraneous assertions. No
functional change here.


Revision tags: release/12.1.0
# c5c3ba6b 03-Sep-2019 Dimitry Andric <dim@FreeBSD.org>

Merge ^/head r351317 through r351731.


# c537e887 27-Aug-2019 Navdeep Parhar <np@FreeBSD.org>

cxgbe/t4_tom: Initialize all TOE connection parameters in one place.
Remove now-redundant items from toepcb and synq_entry and the code to
support them.

Let the driver calculate tx_align, rx_coalesc

cxgbe/t4_tom: Initialize all TOE connection parameters in one place.
Remove now-redundant items from toepcb and synq_entry and the code to
support them.

Let the driver calculate tx_align, rx_coalesce, and sndbuf by default.

Reviewed by: jhb@
MFC after: 1 week
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D21387

show more ...


Revision tags: release/11.3.0
# 0269ae4c 06-Jun-2019 Alan Somers <asomers@FreeBSD.org>

MFHead @348740

Sponsored by: The FreeBSD Foundation


# ebb86398 01-Jun-2019 Navdeep Parhar <np@FreeBSD.org>

cxgbe/t4_tom: adjust the hardware receive window to match changes to the
receive sockbuf's high water mark.

Calculate rx credits on the spot instead of tracking sbused/sb_cc and
rx_credits in the to

cxgbe/t4_tom: adjust the hardware receive window to match changes to the
receive sockbuf's high water mark.

Calculate rx credits on the spot instead of tracking sbused/sb_cc and
rx_credits in the toepcb. The previous method worked when the high
water mark changed due to SB_AUTOSIZE but not when it was adjusted
directly (for example, by the soreserve in nfsrvd_addsock).

This fixes a connection hang while running iozone over an NFS mounted
share where nfsd's TCP sockets are being handled by t4_tom.

MFC after: 3 days
Sponsored by: Chelsio Communications

show more ...


# b156a400 19-Dec-2018 Navdeep Parhar <np@FreeBSD.org>

cxgbe/t4_tom: fixes for issues on the passive open side.

- Fix PR 227760 by getting the TOE to respond to the SYN after the call
to toe_syncache_add, not during it. The kernel syncache code calls

cxgbe/t4_tom: fixes for issues on the passive open side.

- Fix PR 227760 by getting the TOE to respond to the SYN after the call
to toe_syncache_add, not during it. The kernel syncache code calls
syncache_respond just before syncache_insert. If the ACK to the
syncache_respond is processed in another thread it may run before the
syncache_insert and won't find the entry. Note that this affects only
t4_tom because it's the only driver trying to insert and expand
syncache entries from different threads.

- Do not leak resources if an embryonic connection terminates at
SYN_RCVD because of L2 lookup failures.

- Retire lctx->synq and associated code because there is never a need to
walk the list of embryonic connections associated with a listener.
The per-tid state is still called a synq entry in the driver even
though the synq itself is now gone.

PR: 227760
MFC after: 2 weeks
Sponsored by: Chelsio Communications

show more ...


# 67350cb5 09-Dec-2018 Dimitry Andric <dim@FreeBSD.org>

Merge ^/head r340918 through r341763.


Revision tags: release/12.0.0
# 78afed13 29-Nov-2018 John Baldwin <jhb@FreeBSD.org>

Move CLIP table handling out of TOM and into the base driver.

- Store the clip table in 'struct adapter' instead of in the TOM softc.
- Init the clip table during attach and teardown during detach.

Move CLIP table handling out of TOM and into the base driver.

- Store the clip table in 'struct adapter' instead of in the TOM softc.
- Init the clip table during attach and teardown during detach.
- While here, add a dev.<nexus>.<unit>.misc.clip sysctl to dump the
CLIP table.

This does mean that we update the clip table even if TOE is not enabled,
but non-TOE things need the CLIP table anyway.

Reviewed by: np, Krishnamraju Eraparaju @ Chelsio
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D18010

show more ...


# 3611ec60 18-Aug-2018 Dimitry Andric <dim@FreeBSD.org>

Merge ^/head r337646 through r338014.


# 72049e73 17-Aug-2018 Navdeep Parhar <np@FreeBSD.org>

cxgbe/tom: Put the ifnet or VLAN's PCP value in the 802.1Q tag of frames
generated by the TOE. Works with vid 0 (no VLAN, just priority) too.

MFC after: 1 week
Sponsored by: Chelsio Communications


# 9f784349 15-Aug-2018 Navdeep Parhar <np@FreeBSD.org>

cxgbe(4): Use VLAN_TRUNKDEV instead of private cookie to figure out the
parent of a VLAN ifnet.

MFC after: 1 week
Sponsored by: Chelsio Communications


# 6573d758 04-Jul-2018 Matt Macy <mmacy@FreeBSD.org>

epoch(9): allow preemptible epochs to compose

- Add tracker argument to preemptible epochs
- Inline epoch read path in kernel and tied modules
- Change in_epoch to take an epoch as argument
- Simpli

epoch(9): allow preemptible epochs to compose

- Add tracker argument to preemptible epochs
- Inline epoch read path in kernel and tied modules
- Change in_epoch to take an epoch as argument
- Simplify tfb_tcp_do_segment to not take a ti_locked argument,
there's no longer any benefit to dropping the pcbinfo lock
and trying to do so just adds an error prone branchfest to
these functions
- Remove cases of same function recursion on the epoch as
recursing is no longer free.
- Remove the the TAILQ_ENTRY and epoch_section from struct
thread as the tracker field is now stack or heap allocated
as appropriate.

Tested by: pho and Limelight Networks
Reviewed by: kbowling at llnw dot com
Sponsored by: Limelight Networks
Differential Revision: https://reviews.freebsd.org/D16066

show more ...


12345