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506cc70cce
A link reset now is completely transparent for the netmap client: even if the NIC resets its own ring (e.g. restarting from 0), the client will not see any change in the current rx/tx positions, because the driver will keep track of the offset between the two. 2. make the device-specific code more uniform across different drivers There were some inconsistencies in the implementation of the netmap support routines, now drivers have been aligned to a common code structure. 3. import netmap support for ixgbe . This is implemented as a very small patch for ixgbe.c (233 lines, 11 chunks, mostly comments: in total the patch has only 54 lines of new code) , as most of the code is in an external file sys/dev/netmap/ixgbe_netmap.h , following some initial comments from Jack Vogel about making changes less intrusive. (Note, i have emailed Jack multiple times asking if he had comments on this structure of the code; i got no reply so i assume he is fine with it). Support for other drivers (em, lem, re, igb) will come later. "ixgbe" is now the reference driver for netmap support. Both the external file (sys/dev/netmap/ixgbe_netmap.h) and the device-specific patches (in sys/dev/ixgbe/ixgbe.c) are heavily commented and should serve as a reference for other device drivers. Tested on i386 and amd64 with the pkt-gen program in tools/tools/netmap, the sender does 14.88 Mpps at 1050 Mhz and 14.2 Mpps at 900 MHz on an i7-860 with 4 cores and 82599 card. Haven't tried yet more aggressive optimizations such as adding 'prefetch' instructions in the time-critical parts of the code. |
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| .. | ||
| aac | ||
| ansify | ||
| ath | ||
| backout_commit | ||
| build_option_survey | ||
| bus_autoconf | ||
| cd2dvd | ||
| cfi | ||
| commitsdb | ||
| crypto | ||
| cxgbetool | ||
| cxgbtool | ||
| editing | ||
| epfe | ||
| ether_reflect | ||
| find-sb | ||
| gdb_regofs | ||
| genericize | ||
| hcomp | ||
| html-mv | ||
| ifinfo | ||
| ipw | ||
| iso | ||
| iwi | ||
| kdrv | ||
| kernelcruft | ||
| kerninclude | ||
| kernxref | ||
| kttcp | ||
| mcgrab | ||
| mctest | ||
| mfc | ||
| mfi | ||
| mid | ||
| mtxstat | ||
| mwl | ||
| nanobsd | ||
| ncpus | ||
| net80211 | ||
| netmap | ||
| netrate | ||
| notescheck | ||
| npe | ||
| nxge | ||
| pciroms | ||
| pirtool | ||
| portsinfo | ||
| prstats | ||
| release | ||
| scsi-defects | ||
| sysbuild | ||
| syscall_timing | ||
| sysdoc | ||
| termcap | ||
| tinybsd | ||
| tionxcl | ||
| track | ||
| umastat | ||
| usb | ||
| vhba | ||
| vimage | ||
| vop_table | ||
| vxge | ||
| whereintheworld | ||
| zfsboottest | ||
| README | ||
# $FreeBSD$ This directory is for tools. A tool is something which is sometimes useful, and doesn't fit any of the other categories. Please make a subdir per program, and add a brief description to this file. ansify Convert K&R-style function definitions to ANSI style ath Tools specific to the Atheros 802.11 support backout_commit A tool for reading in a commit message and generating a script that will backout the commit. cfi Common Flash Interface (CFI) tool commitsdb A tool for reconstructing commit history using md5 checksums of the commit logs. crypto Test and exercise tools related to the crypto framework cxgbetool A tool for the cxgbe(4) driver. cxgbtool A tool for the cxgb(4) driver. diffburst OBSOLETE: equivalent functionality is available via split -p. For example: "split -p ^diff < patchfile". See split(1). editing Editor modes and the like to help editing FreeBSD code. epfe Extract printing filter examples from printing.sgml. ether_reflect An Ethernet packet reflector for low level testing. find-sb Scan a disk for possible filesystem superblocks. gdb_regofs A simple tool that prints out a register offset table for mapping gdb(1) register numbers to struct reg and struct fpreg offsets. The tool is useful on selected platforms only. genericize Turn a kernel config into something that can more easily be diffed against the appropriate GENERIC. hcomp Compress header files by removing comments and whitespace. html-mv Rename HTML generated filenames to human readable filenames. ifinfo Uses the interface MIB to print out all the information an interface exports in an ugly form. iso Tool to compare the iso3166 and iso639 files in /usr/share/misc with the data from the master sites. iwi Tools specific to the Intel PRO/Wireless 2200BG/2225BG/2915ABG support. kdrv KernelDriver; add/list/remove third-party kernel driver source to/in/from a kernel source tree. kernelcruft Shellscript to find orphaned *.c files in /sys kerninclude Shellscript to find unused #includes in the kernel. kernxref Shellscript to cross reference symbols in the LINT kernel. kttcp An in-kernel version of the ttcp network performance tool mctest A multicast test program mfc Merge a directory from HEAD to a branch where it does not already exist and other MFC related script(s). mid Create a Message-ID database for mailing lists. mwl Tools specific to the Marvell 88W8363 support ncpus Count the number of processors netmap Test applications for netmap(4) notescheck Check for missing devices and options in NOTES files. npe Tools specific to the Intel IXP4XXX NPE device nxge A diagnostic tool for the nxge(4) driver pciid Generate src/share/misc/pci_vendors. pciroms A tool for dumping PCI ROM images. WARNING: alpha quality. pirtool A tool for dumping the $PIR table on i386 machines at runtime. portsinfo Generate list of new ports for last two weeks. prstats Generate statistics about the PR database. recoverdisk Copy as much data as possible from a defective disk. scsi-defects Get at the primary or grown defect list of a SCSI disk. sysdoc Build a manual page with available sysctls for a specific kernel configuration. tinybsd Script to build FreeBSD embedded systems. track Track the progress of a world / kernel build vimage An interim utility for managing the virtualized network stack infrastructure. vop_table Generates a HTML document that shows all the VOP's in the kernel. vxge A diagnostic tool for the vxge(4) driver whereintheworld Summarizes "make world" output.