doing bidirectional stress traffic on 82598.
Also a couple bug fixes from Michael Tuexen, thank you!!
Add a workaround into the header so that 8 REL can use
the driver (adds local copy of ALTQ fix).
MFC: in a few days
When not defining header split do not allocate mbufs,
this can be a BIG savings in the mbuf memory pool.
Also keep seperate dma maps for the header and
payload pieces when doing header split. The basis
of this code was a patch done a while ago by
yongari, thank you :)
A number of white space changes.
MFC: in a few days
- add a moderation value to the Link vector
- allow disabling HW RSC on the 82599 if LRO
is not enabled.
- correct error in the stats code
- change optic type on the 82598 DA device
Thanks to Andrew Boyer for the changes.
no flowid is present, this was causing some bad
reordering, now just use 0.
Also, add a few watchdog bits, and tx handler bits
that were corrected in igb.
also for finding a one character bug that kept TSO from working.
Sometimes with direct attach cables a failure can occur in init,
the old method of calling detach was broken, there is no way to
return an error to the system from init, so I have changed it to
return failure thru the ioctl.
And, have fixed the ALTQ code changes of Max Laier, sorry Max :)
- add some new hardware support for 82599
- Big change to interrupt architecture, it now
uses a queue which contains an RX/TX pair as
the recipient of the interrupt. This will reduce
overall system interrupts/msix usage.
- Improved RX mbuf handling: the old get_buf routine
is no longer synchronized with rxeof, this allows
the elimination of packet discards due to mbuf
allocation failure.
- Much simplified and improved AIM code, it now
happens in the queue interrupt context and takes
into account both the traffic on the RX AND TX
side.
- variety of small tweaks, like ring size, that have
been seen as performance improvements.
- Thanks to those that provided feedback or suggested
changes, I hope I've caught all of them.
- introduce drbr_needs_enqueue that returns whether the interface/br needs
an enqueue operation: returns true if altq is enabled or there are
already packets in the ring (as we need to maintain packet order)
- update all drbr consumers
- fix drbr_flush
- avoid using the driver queue (IFQ_DRV_*) in the altq case as the
multiqueue consumer does not provide enough protection, serialize altq
interaction with the main queue lock
- make drbr_dequeue_cond work with altq
Discussed with: kmacy, yongari, jfv
MFC after: 4 weeks
This adds new feature support for the 82599, a hardware
assist to LRO, doing this required a large revamp to the
RX cleanup code because the descriptor ring may not be
processed out of order, this necessitated the elimination
of global pointers.
Additionally, the RX routine now does not refresh mbufs
on every descriptor, rather it will do a range, and then
update the hardware pointer at that time. These are
performance oriented changes.
The TX side now has a cleaner simpler watchdog algorithm
as well, in TX cleanup a read of ticks is stored, that
can then be compared in local_timer to determine if
there is a hang.
Various other cleanups along the way, thanks to all who
have provided input and testing.
and remove from its dependency on LRO, my tests have shown
that its always beneficial, even when doing bridging.
Second, fix up a few problems in the statistics code, the
adapter dependencies had gotten lost so some code that should
only run on 82599 was always running, this resulted in bogus
flow control numbers on 82598.
- When a vlan event occurs a check was not made that
the event was actually for the interface, thus resulting
in a panic. All three drivers have this vulnerability. Add
a check for this condition.
- Secondly, there was a duplicate buf_ring free in the em
driver resulting in a panic on unload. Remove.
Approved by: re
IF_ADDR_UNLOCK() across network device drivers when accessing the
per-interface multicast address list, if_multiaddrs. This will
allow us to change the locking strategy without affecting our driver
programming interface or binary interface.
For two wireless drivers, remove unnecessary locking, since they
don't actually access the multicast address list.
Approved by: re (kib)
MFC after: 6 weeks
-This version has header split, and as a result a number of
aspects of the code have been improved/simplified.
- Interrupt handling refined for performance
- Many small bugs fixed along the way
MFC after: ASAP - in time for 7.1
-It has new hardware support
-It uses a new method of TX cleanup called Head Write Back
-It includes the provisional generic TCP LRO feature contributed
by Myricom and made general purpose by me. This should move into
the stack upon approval but for this driver drop its in here.
-Also bug fixes and etc...
MFC in a week if no serious issues arise.
The first drop was Beta, this code is expected to be the release version.
Note that this driver code will build in either 6.2 or 7. If you
use the code in 6.2 you will not get TSO or MSI/X support but it will
function in a legacy mode.
Approved by: re
- change include style so build in kernel try OR standalone work.
- Limit HWCSUM - I was led to believe that it would work with RSS,
but our testing had odd issues which suggests this is false.
- A fatfinger error in the ioctl code made ifconfig up not work.
Approved by: re
