network interfaces. This works by pre-computing the pseudo-header
checksum and caching it, delaying the actual checksum to ip_output()
if the hardware cannot perform the sum for us. In-bound checksums
can either be fully-checked by hardware, or summed up for final
verification by software. This method was modeled after how this
is done in FreeBSD, although the code is significantly different in
most places.
We don't delay checksums for IPv6/TCP, but we do take advantage of the
cached pseudo-header checksum.
Note: hardware-assisted checksumming defaults to "off". It is
enabled with ifconfig(8). See the manual page for details.
Implement hardware-assisted checksumming on the DP83820 Gigabit Ethernet,
3c90xB/3c90xC 10/100 Ethernet, and Alteon Tigon/Tigon2 Gigabit Ethernet.
if we are requested range of multicast address or too many multicast address,
program multicast filter to receive all multicast address. And set/clear
IFF_ALLMULTI flag properly.
pci_attach_args *" instead of from four separate parameters which in
all cases were extracted from the same "struct pci_attach_args".
This both simplifies the driver api, and allows for alternate PCI
interrupt mapping schemes, such as one using the tables described in
the Intel Multiprocessor Spec which describe interrupt wirings for
devices behind pci-pci bridges based on the device's location rather
the bridge's location.
Tested on alpha and i386; welcome to 1.5Q
1.39:
Have if_ti stop "hiding" the softc pointer in the buffer region. Rather,
use the available void * passed to the free routine and pass the softc
pointer through there.
1.33:
Add support for the Netgear GA620T copper gigabit card.
1.32:
Tweak probe message so that 1000baseSX and 1000baseT cards are
explicitly identified.
1.31:
Update the Tigon driver to support 1000baseTX gigE over copper AceNIC
cards. This basically involves switching to the 12.4.13 firmware, plus
a couple of minor tweaks to the driver.
NetBSD changes:
get rid of ti_inuse, the mbuf ref counting code should call ti_free() when
needed.
Use hardware 802.1q support.
- fix a bug in ti_encap() where a NULL pointer could be used if we run out
of tx descriptors (return ENOMEM instead, and let the caller assert OACTIVE)
- sync boot messages with NetBSD's pci standart (print ti_name and irq
line)
- add a shutdown hook to stop the board, so that the board will not DMA at
random places while we're rebooting
- convert all but TIGON 1 transmit descriptors to use bus_space
(this last one isn't trivial to get rigth and I don't have the hardware to
test)
- If we can't map the mem space linar, retry to map it nolinear. Punt if
we couldn't map the mem space linear and we found a Tigon 1 chip.
With these changes a Tigon 2 board (netgear BA620 at last) can be used in
my DS20.
2. pull in a fix from FreeBSD:
revision 1.18
date: 1999/09/17 18:04:14; author: wpaul; state: Exp; lines: +3 -3
Remember to account for ETHER_ALIGN when setting the maxmimum packet
length for mini receive ring. The max length was MHLEN, however the mbufs
are actually shortened to MHLEN - ETHER_ALIGN to force payload alignment.
todo:
-IPv6
-clean up jumbo buffer allocation - NetBSD provides an opaque argument
to the free function, thus doesn't need the hack done here
-deal correctly with the mapping of the shared memory
thorpej