Commit Graph

7 Commits

Author SHA1 Message Date
Robert Watson
eb956cd041 Use if_maddr_rlock()/if_maddr_runlock() rather than IF_ADDR_LOCK()/
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
2009-06-26 11:45:06 +00:00
Andriy Gapon
8e45f0b7c6 strict kobj signatures: fix assortment of miibus_writereg impls
return type should be int, not void

Reviewed by:	imp, current@
Approved by:	jhb (mentor)
2009-06-11 17:14:54 +00:00
Attilio Rao
1abcdbd127 When user_frac in the polling subsystem is low it is going to busy the
CPU for too long period than necessary.  Additively, interfaces are kept
polled (in the tick) even if no more packets are available.
In order to avoid such situations a new generic mechanism can be
implemented in proactive way, keeping track of the time spent on any
packet and fragmenting the time for any tick, stopping the processing
as soon as possible.

In order to implement such mechanism, the polling handler needs to
change, returning the number of packets processed.
While the intended logic is not part of this patch, the polling KPI is
broken by this commit, adding an int return value and the new flag
IFCAP_POLLING_NOCOUNT (which will signal that the return value is
meaningless for the installed handler and checking should be skipped).

Bump __FreeBSD_version in order to signal such situation.

Reviewed by:	emaste
Sponsored by:	Sandvine Incorporated
2009-05-30 15:14:44 +00:00
Rafal Jaworowski
5817716faf mge(4): fix two bugs, which were leading to crash/hang under very heavy
network load.

1. Leave the RX interrupt routine if there is no mbuf available.

2. Properly initialize and track tx_desc_used_count counter so as not to
leak mbuf while traversing used descriptors.

Obtained from:	Semihalf
2009-04-16 11:38:06 +00:00
Rafal Jaworowski
bc26e2e38f Adjust Marvell Discovery (MV78xxx) support to recognize newest chip revisions,
handle Z0 revision (early silicon) explicitly due to its quirks.

Obtained from:	Marvell, Semihalf
2009-04-16 11:20:18 +00:00
Rafal Jaworowski
8e1dc58e8c Handle mge(4) chip revision differences at run-time rather then compile time,
which is more flexible for future revisions, and lets eliminate some #defines
and compile conditionals.

Obtained from:	Semihalf
2009-01-08 11:09:27 +00:00
Rafal Jaworowski
9f55f5f5cf Marvell Gigabit Ethernet controller driver.
This supports 1Gbps Ethernet engine found on ARM-based SOCs (Orion, Kirkwood,
Discovery), as well as on system controllers for PowerPC processors (MV64430,
MV6446x).

The following advanced features are supported:

  - multicast
  - VLAN tagging
  - IP/TCP/UDP checksum calculation offloading
  - polling
  - interrupt coalescing

Obtained from:	Marvell, Semihalf
2008-10-14 07:24:18 +00:00