driver in Linux 2.6. uscanner was just a simple wrapper around a fifo and
contained no logic, the default interface is now libusb (supported by sane).
Reviewed by: HPS
avoidance:
- Enable setting the RXCSUM and TXCSUM flags for loopback interfaces;
set both by default.
- When RXCSUM is set, flag packets sent over the loopback interface as
having checked and valid IP, UDP, TCP checksums so that higher
protocol layers won't check them.
- Always clear CSUM_{IP,UDP_TCP} checksum required flags on transmit,
as they will have gotten there as a result of TXCSUM being set.
This is done only for packets explicitly sent over the loopback, not
simulated loopback via if_simloop() due to !SIMPLEX interfaces, etc.
Note that enabling TXCSUM but not RXCSUM will lead to unhappiness, as
checksums won't be generated but will be validated.
Kris reports that this leads to significant performance improvements
in loopback benchmarking with TCP and UDP for throughput:
RXCSUM RXCSUM+TXCSUM
TCP 15% 37%
UDP 10% 74%
Update man page.
Reviewed by: sam
Tested by: kris
MFC after: 1 week
IPv4 stack.
Diffs are minimized against p4.
PCS has been used for some protocol verification, more widespread
testing of recorded sources in Group-and-Source queries is needed.
sizeof(struct igmpstat) has changed.
__FreeBSD_version is bumped to 800070.
the example script of the manpage feeds awk(1) with values larger
than UINT32_MAX. Then awk prints a negative value, and this
messes up $BPFPROG. Trying to load the resulting bpf byte codes
with ngctl then fails.
For example, the output for PATTERN="udp and dst net 255.255.0.0/16"
should be (all in one line):
bpf_prog_len=10
bpf_prog=[
{ code=40 jt=0 jf=0 k=12 }
{ code=21 jt=7 jf=0 k=34525 }
{ code=21 jt=0 jf=6 k=2048 }
{ code=48 jt=0 jf=0 k=23 }
{ code=21 jt=0 jf=4 k=17 }
{ code=32 jt=0 jf=0 k=30 }
{ code=84 jt=0 jf=0 k=4294901760 }
{ code=21 jt=0 jf=1 k=4294901760 }
{ code=6 jt=0 jf=0 k=8192 }
{ code=6 jt=0 jf=0 k=0 }
]
The two k=4294901760 values are displayed as k=-2147483648 by awk.
Replace the awk script of the manpage example with a slower but
safer version, that doesn't really attempt to convert the byte
code printed by tcpdump from string to number and back.
PR: docs/123255
Submitted by: Eugenio Maffione, eugenio.maffione at telecomitalia.it
MFC after: 3 days
it's also supported with BCM5702 (matched by BGE_ASICREV_BCM5703) but
bge(4) currently doesn't with neither BCM5714 nor BCM5780.
Prodded by: scf
MFC after: 3 days
Now the NDISulator supports NDIS USB drivers that it've tested with
devices as follows:
- Anygate XM-142 (Conexant)
- Netgear WG111v2 (Realtek)
- U-Khan UW-2054u (Marvell)
- Shuttle XPC Accessory PN20 (Realtek)
- ipTIME G054U2 (Ralink)
- UNiCORN WL-54G (ZyDAS)
- ZyXEL G-200v2 (ZyDAS)
All of them succeeded to attach and worked though there are still some
problems that it's expected to be solved.
To use NDIS USB support, you should rebuild and install ndiscvt(8) and
if you encounter a problem to attach please set `hw.ndisusb.halt' to
0 then retry.
I expect no changes of the NDIS code for PCI, PCMCIA devices.
Obtained from: //depot/projects/ndisusb/...
