src-test2/sys/dev/netmap/netmap_mbq.c, branch release/12.0.0FreeBSD source treehttps://cgit-dev.freebsd.org/src-test2/atom?h=release%2F12.0.02017-11-27T14:52:40Zsys/dev: further adoption of SPDX licensing ID tags.2017-11-27T14:52:40ZPedro F. Giffunipfg@FreeBSD.org2017-11-27T14:52:40Zurn:sha1:718cf2ccb9956613756ab15d7a0e28f2c8e91cab
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.
Import the current version of netmap, aligned with the one on github.2016-10-16T14:13:32ZLuigi Rizzoluigi@FreeBSD.org2016-10-16T14:13:32Zurn:sha1:37e3a6d349581b4dd0aebf24be7b1b159a698dcf
This commit, long overdue, contains contributions in the last 2 years
from Stefano Garzarella, Giuseppe Lettieri, Vincenzo Maffione, including:
+ fixes on monitor ports
+ the 'ptnet' virtual device driver, and ptnetmap backend, for
high speed virtual passthrough on VMs (bhyve fixes in an upcoming commit)
+ improved emulated netmap mode
+ more robust error handling
+ removal of stale code
+ various fixes to code and documentation (some mixup between RX and TX
parameters, and private and public variables)
We also include an additional tool, nmreplay, which is functionally
equivalent to tcpreplay but operating on netmap ports.
introduce mbq_lock() and mbq_unlock() for the mbq,2014-06-06T18:02:32ZLuigi Rizzoluigi@FreeBSD.org2014-06-06T18:02:32Zurn:sha1:997b054cf10b391fd4796b5e92c286ebd1fb1405
so it is easier to buil the same code on linux
(this generalizes the change in svn 267142)
MFC after: 3 days
Use mtx_lock_spin/mtx_unlock_spin primitives on spin lock2014-06-06T00:24:04ZAndrey Zonovzont@FreeBSD.org2014-06-06T00:24:04Zurn:sha1:dc8a95e62bdd5dc2a17f57f3352094f1692fccb4
Reviewed by: luigi
MFC after: 1 week
It is 2014 and we have a new version of netmap.2014-01-06T12:53:15ZLuigi Rizzoluigi@FreeBSD.org2014-01-06T12:53:15Zurn:sha1:17885a7bfde9d164e45a9833bb172215c55739f9
Most relevant features:
- netmap emulation on any NIC, even those without native netmap support.
On the ixgbe we have measured about 4Mpps/core/queue in this mode,
which is still a lot more than with sockets/bpf.
- seamless interconnection of VALE switch, NICs and host stack.
If you disable accelerations on your NIC (say em0)
ifconfig em0 -txcsum -txcsum
you can use the VALE switch to connect the NIC and the host stack:
vale-ctl -h valeXX:em0
allowing sharing the NIC with other netmap clients.
- THE USER API HAS SLIGHTLY CHANGED (head/cur/tail pointers
instead of pointers/count as before). This was unavoidable to support,
in the future, multiple threads operating on the same rings.
Netmap clients require very small source code changes to compile again.
On the plus side, the new API should be easier to understand
and the internals are a lot simpler.
The manual page has been updated extensively to reflect the current
features and give some examples.
This is the result of work of several people including Giuseppe Lettieri,
Vincenzo Maffione, Michio Honda and myself, and has been financially
supported by EU projects CHANGE and OPENLAB, from NetApp University
Research Fund, NEC, and of course the Universita` di Pisa.
split netmap code according to functions:2013-12-15T08:37:24ZLuigi Rizzoluigi@FreeBSD.org2013-12-15T08:37:24Zurn:sha1:f9790aeb8869bfcedf111517bace712b390e6cc5
- netmap.c base code
- netmap_freebsd.c FreeBSD-specific code
- netmap_generic.c emulate netmap over standard drivers
- netmap_mbq.c simple mbuf tailq
- netmap_mem2.c memory management
- netmap_vale.c VALE switch
simplify devce-specific code