- 13 May, 2008 40 commits
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Ilpo Järvinen authored
If receiver consumes segments successfully only in-order, FRTO fallback to conventional recovery produces RTO loop because FRTO's forward transmissions will always get dropped and need to be resent, yet by default they're not marked as lost (which are the only segments we will retransmit in CA_Loss). Price to pay about this is occassionally unnecessarily retransmitting the forward transmission(s). SACK blocks help a bit to avoid this, so it's mainly a concern for NewReno case though SACK is not fully immune either. This change has a side-effect of fixing SACKFRTO problem where it didn't have snd_nxt of the RTO time available anymore when fallback become necessary (this problem would have only occured when RTO would occur for two or more segments and ECE arrives in step 3; no need to figure out how to fix that unless the TODO item of selective behavior is considered in future). Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Reported-by: Damon L. Chesser <damon@damtek.com> Tested-by: Damon L. Chesser <damon@damtek.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Ilpo Järvinen authored
It seems that commit 009a2e3e ("[TCP] FRTO: Improve interoperability with other undo_marker users") run into another land-mine which caused fallback to conventional recovery to break: 1. Cumulative ACK arrives after FRTO retransmission 2. tcp_try_to_open sees zero retrans_out, clears retrans_stamp which should be kept like in CA_Loss state it would be 3. undo_marker change allowed tcp_packet_delayed to return true because of the cleared retrans_stamp once FRTO is terminated causing LossUndo to occur, which means all loss markings FRTO made are reverted. This means that the conventional recovery basically recovered one loss per RTT, which is not that efficient. It was quite unobvious that the undo_marker change broken something like this, I had a quite long session to track it down because of the non-intuitiviness of the bug (luckily I had a trivial reproducer at hand and I was also able to learn to use kprobes in the process as well :-)). This together with the NewReno+FRTO fix and FRTO in-order workaround this fixes Damon's problems, this and the first mentioned are enough to fix Bugzilla #10063. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Reported-by: Damon L. Chesser <damon@damtek.com> Tested-by: Damon L. Chesser <damon@damtek.com> Tested-by: Sebastian Hyrwall <zibbe@cisko.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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David S. Miller authored
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Auke Kok authored
I'm handing over maintainership to Jeff Kirsher and moving on to other Linux/Open Source work within Intel. Good luck to Jeff ;) Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Ben Dooks authored
Periodically check the MII PHY status to ensure that the network layer's link status is updated and the user informed of any changes. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Enrico Scholz authored
There was a missing newline in a dev_dbg() message. Values read from/written into PHY registers might be for interest too, so I added new dbg messages there. Signed-off-by: Enrico Scholz <enrico.scholz@sigma-chemnitz.de> Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Enrico Scholz authored
There were missing __dev* annotations for the dm9000_probe() and dm9000_drv_remove() functions. Signed-off-by: Enrico Scholz <enrico.scholz@sigma-chemnitz.de> Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Jesse Brandeburg authored
noticed while browsing code, apparent thinko. compile tested only. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> CC: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Ben Hutchings authored
Add a set of self-tests accessible thorugh ethtool. Add hardware loopback and TX disable control code to support them. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Ben Hutchings authored
An RX_RESET event can be reported either as a global or as a driver event. We were counting only global events. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Ben Hutchings authored
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Ben Hutchings authored
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Ben Hutchings authored
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Ben Hutchings authored
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Ben Hutchings authored
Fall-through is expected outside a switch statement. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Ben Hutchings authored
The 10Xpress PHY supports flash upgrades through MDIO, but needs to be put in upgrade mode at power-up. This adds a module parameter and other logic to support that. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Ben Hutchings authored
The SFC4000 controller does not have hardware support for TSO, and the core GSO code incurs a high cost in allocating and freeing skbs. This TSO implementation uses lightweight packet header structures and is substantially faster. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Hannes Hering authored
The eHEA driver uses the recently modified walk_memory_resource for powerpc functionality to detect the memory layout. It further uses the memory hotplug notifiers to catch memory hotplug events. Signed-off-by: Hannes Hering <hering2@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Hannes Hering authored
The new ehea memory hot plug implementation depends on MEMORY_HOTPLUG. Signed-off-by: Hannes Hering <hering2@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Hannes Hering authored
This patch introduces two exports to allow modules to use memory notifiers. Signed-off-by: Hannes Hering <hering2@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Andy Fleming authored
The loop that unmaps all of the TX Buffer Descriptors never actually moves the txbd pointer, so we were just repeatedly unmapping the first one. Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Divy Le Ray authored
Reset the chip when the PCI link goes down. Preserve the napi structure when a sge qset's resources are freed. Replay only HW initialization when the chip comes out of reset. Signed-off-by: Divy Le ray <divy@chelsio.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Divy Le Ray authored
Fix faiures path when ports are stopped and restarted in EEH recovery. Signed-off-by: Divy Le Ray <divy@chelsio.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Brice Goglin authored
Fix a long-standing bug/misunderstanding between the driver and the firmware. The size of the interrupt queue must be set to the number of rx slots (big + small), and it should never have been a tunable. Setting it too small results in chaos. Signed-off-by: Brice Goglin <brice@myri.com> Signed-off-by: Andrew Gallatin <gallatin@myri.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Brice Goglin authored
Add myri10ge_get_firmware_capabilities() to retrieve TSO6 and interrupt slots capabilities from the firmware. Signed-off-by: Brice Goglin <brice@myri.com> Signed-off-by: Andrew Gallatin <gallatin@myri.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Brice Goglin authored
To prepare and simplify multislice rx support, add a single slice structure and move some fields in there. No functional change yet. Signed-off-by: Brice Goglin <brice@myri.com> Signed-off-by: Andrew Gallatin <gallatin@myri.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Brice Goglin authored
Fix another potential for an infinite loop while looking for the root port in myri10ge_enable_ecrc(). Signed-off-by: Brice Goglin <brice@myri.com> Signed-off-by: Andrew Gallatin <gallatin@myri.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Brice Goglin authored
Add some blank lines to uniformize the code and match the upstream code. Signed-off-by: Brice Goglin <brice@myri.com> Signed-off-by: Andrew Gallatin <gallatin@myri.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Brice Goglin authored
Add a barrier() in the usleep() loop in myri10ge_send_cmd(). Without the barrier, some mips machine never notices that the firmware has DMA'ed the response. Signed-off-by: Brice Goglin <brice@myri.com> Signed-off-by: Andrew Gallatin <gallatin@myri.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Brice Goglin authored
Make ethtool report FIBER for XFP based NIC's port type. Don't bother to poke around and try to find out what is in the XFP cage, since Linux does not have separate media types for -SR -LR, etc. Signed-off-by: Brice Goglin <brice@myri.com> Signed-off-by: Andrew Gallatin <gallatin@myri.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Brice Goglin authored
Properly align scratch buffers when making boot commands. Signed-off-by: Brice Goglin <brice@myri.com> Signed-off-by: Andrew Gallatin <gallatin@myri.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Brice Goglin authored
Increase the handoff timeout to 512ms so as to give the aeluros based NICs sufficient time to handoff without relying on the msleep() being sloppy, and accidentally sleeping way longer than the 20ms we specified in 20 separate 1ms sleeps. Fix typo in the handoff sleep delay, which made it additive, not exponential. Signed-off-by: Brice Goglin <brice@myri.com> Signed-off-by: Andrew Gallatin <gallatin@myri.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Brice Goglin authored
Remove useless linebreaks at the end of MODULE_PARM_DESC and fix the description of myri10ge_lro_max_pkts. Signed-off-by: Brice Goglin <brice@myri.com> Signed-off-by: Andrew Gallatin <gallatin@myri.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Brice Goglin authored
Update myri10ge firmware headers. Signed-off-by: Brice Goglin <brice@myri.com> Signed-off-by: Andrew Gallatin <gallatin@myri.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Jay Cliburn authored
atl1-2.1.3. Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Jay Cliburn authored
Add a shutdown callback that points to atl1_suspend(). This, along with a working suspend function, fixes wake-on-lan. Tested-by: Per Olofsson <pelle@dsv.su.se> Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Jay Cliburn authored
Fix atl1_suspend() and atl1_resume() so they actually work. We'll use the suspend function for wake-on-lan in addition to just suspending. Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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Jay Cliburn authored
Using vendor-provided magic, add code to enter power save mode on the PHY. We'll need this for suspend and wake-on-lan. Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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David S. Miller authored
When skb_header_cloned() returns false you can change the headers however you like. Signed-off-by: David S. Miller <davem@davemloft.net>
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Johannes Berg authored
This assigns the netdev's needed_headroom/tailroom members to take advantage of pre-allocated space for 802.11 headers. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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