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2012-05-12usb/net: rndis: fixup a few name prefixesLinus Walleij
This switches a horde of NDIS_*-prefixed variables to the RNDIS_* prefix. Most of them aren't used much and causes no changes. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12usb/net: rndis: merge command codesLinus Walleij
Switch the hyperv filter and rndis gadget driver to use the same command enumerators as the other drivers and delete the surplus command codes. Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12usb/net: rndis: move and namespace PnP definesLinus Walleij
This moves the PnP OID definitions to the RNDIS_* namespace and puts them in the next falling slot in the list. Oh, the comment above the PnP defines was referring to some obsolete or out-of-tree driver so removed it, and removed my own comments telling where each header segment came from as well, we have moved everything around by this point anyway. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12usb/net: rndis: delete duplicate packet typesLinus Walleij
The NDIS_*-prefixed packet types have equivalent RNDIS_*- prefixed types, besides nothing in the kernel use these defines. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12usb/net: rndis: merge media type definitionsLinus Walleij
Let's have a unified table of RNDIS media. We used to have a similar table with NDIS_* prefix from the gadget driver, but since we're only using RNDIS in the kernel (IIRC NDIS, non-remote, is for the windows- internal network drivers so what do we care) let's prefix everything with RNDIS. Some of the definitions were conflicting, in one of the defines 0x0B is bearer "CO WAN" and in two others "BPC". Well I took the majority vote. Two definition of medium 0x09 calls it "wireless WAN" but one vote for "wireless LAN" but in this case I am sticking with the minority, "Wide Area Network" does not make much sense in this case as far as I can tell. NOTE: latin singular and plural is so screwed up in these defines that it makes my eyes bleed. But I will not attempt to submit a patch converting all use of _MEDIA_ to _MEDIUM_ while I can probably tell from the semantics of the code that RNDIS_MEDIA_STATE_CONNECTED is most probably (erroneously) referring to a singular, unless it can return an array of connected media. I suspect these erroneous plurals are used in documentation and such so I don't want to mess around with things for no functional change. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12usb/net: rndis: group all status codes togetherLinus Walleij
Move all RNDIS status codes so they appear in rising order and in one place of the header file. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12usb/net: rndis: delete surplus definesLinus Walleij
These defines are not used in the kernel, and they have duplicate definitions under the RNDIS_* prefix. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12usb/net: rndis: merge duplicate 802_* OIDsLinus Walleij
The 802_* network OIDs were duplicated, so let's merge them and use the RNDIS_* prefixed definitions from the hyperV driver. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12usb/net: rndis: eliminate first set of duplicate OIDsLinus Walleij
The RNDIS protocol contains a vast number of Object ID:s (OIDs). The current definitions had multiple definitions of these ID:s, let's use the nicely RNDIS_*-prefixed defines from the HyperV implementation, rename everywhere they're used, and copy+rename the few that were missing from this list of objects. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12usb/net: rndis: remove ambigous status codesLinus Walleij
The RNDIS status codes are redefined with much stranged ifdeffery and only one of these codes was used in the hyperv driver, and there it is very clearly referring to the RNDIS variant, not some other status. So clarify this by explictly using the RNDIS_* prefixed status code in the hyperv drivera and delete the duplicate defines. Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12usb/net: rndis: break out <linux/rndis.h> definesLinus Walleij
As a first step to consolidate the RNDIS implementations, break out a common file with all the #defines and move it to <linux/rndis.h>. This also deletes the immediate duplicated defines in the <linux/rndis.h> file that yields a lot of compilation warnings. Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-12usb/net: rndis: inline the cpu_to_le32() macroLinus Walleij
The header file <linux/usb/rndis_host.h> used a number of #defines that included the cpu_to_le32() macro to assure the result will be in LE endianness. Inlining this into the code instead of using it in the code definitions yields consolidation opportunities later on as you will see in the following patches. The individual drivers also used local defines - all are switched over to the pattern of doing the conversion at the call sites instead. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-11net/ipv6/af_inet6.c: checkpatch cleanupEldad Zack
af_inet6.c:80: ERROR: do not initialise statics to 0 or NULL af_inet6.c:259: ERROR: spaces required around that '=' (ctx:VxV) af_inet6.c:394: WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable af_inet6.c:412: WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable af_inet6.c:422: ERROR: do not use assignment in if condition af_inet6.c:425: ERROR: do not use assignment in if condition af_inet6.c:433: ERROR: do not use assignment in if condition af_inet6.c:437: WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable af_inet6.c:446: ERROR: spaces required around that '=' (ctx:VxV) af_inet6.c:478: WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable af_inet6.c:485: ERROR: that open brace { should be on the previous line af_inet6.c:485: ERROR: space required before the open parenthesis '(' af_inet6.c:513: WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable af_inet6.c:629: WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable af_inet6.c:647: WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable af_inet6.c:687: WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable af_inet6.c:709: WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable af_inet6.c:1073: ERROR: space required before the open parenthesis '(' Signed-off-by: Eldad Zack <eldad@fogrefinery.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-11net: of/phy: fix build error when phylib is built as a moduleBjørn Mork
CONFIG_OF_MDIO is tristate and will be m if PHYLIB is m. Use IS_ENABLED macro to prevent build error: ERROR: "of_mdio_find_bus" [drivers/net/phy/mdio-mux.ko] undefined! Reported-by: Randy Dunlap <rdunlap@xenotime.net> Cc: David Daney <david.daney@cavium.com> Signed-off-by: Bjørn Mork <bjorn@mork.no> Acked-by: David Daney <david.daney@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-11Merge tag 'batman-adv-for-davem' of git://git.open-mesh.org/linux-mergeDavid S. Miller
Included changes: * fix a little bug in the DHCP packet snooping introduced so far * minor fixes and cleanups * minor routing protocol API cleanups * add a new contributor name to translation-table.{c,h} * update copyright years in file headers * minor improvement for the routing algorithm
2012-05-11batman-adv: add contributor nameAntonio Quartulli
translation_table.{c,h} have been heavily modified by another contributor and for legal purposes it is better to include his name into the contributor list Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2012-05-11batman-adv: update copyright yearsAntonio Quartulli
update copyright years in order to include 2012 Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2012-05-11batman-adv: fix checkpatch string complaintMarek Lindner
Regression introduced by: f76d019194e0a88c57371df169ecc979690a04c2 Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2012-05-11batman-adv: avoid temporary routing loops by being strict on forwarded OGMsMarek Lindner
batman-adv would forward OGMs from non-besthops while replacing the the TQ and TTL values with the values from the best hop. In certain corner cases this leads to a temporary routing loop. This patch changes this behavior: Only packets from best next hops are forwarded - TQ and TTL values won't be replaced anymore. However, the protocol needs to rebroadcast OGMs from single hop neighbors regardless of whether or not they are the best hop. To handle this case a new flag is introduced to alert neighboring nodes about the forwarded OGM that is not from my best next hop. It is to be discarded by all nodes except for the one originating the OGM. Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Acked-by: Daniele Furlan <daniele.furlan@gmail.com> Tested-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
2012-05-11batman-adv: Adding hard_iface specific sysfs wrapper macros for UINTLinus Luessing
This allows us to easily add a sysfs parameter for an unsigned int later, which is not for a batman mesh interface (e.g. bat0), but for a common interface instead. It allows reading and writing an atomic_t in hard_iface (instead of bat_priv compared to the mesh variant). Developed by Linus during a 6 months trainee study period in Ascom (Switzerland) AG. Signed-off-by: Linus Luessing <linus.luessing@web.de> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
2012-05-11batman-adv: rename sysfs macros to reflect the soft-interface dependencyMarek Lindner
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2012-05-11batman-adv: refactoring API: find generalized name for bat_ogm_update_mac ↵Marek Lindner
callback Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2012-05-11batman-adv: ignore protocol packets if the interface did not enable this ↵Marek Lindner
protocol Reported-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2012-05-11batman-adv: split neigh_new function into generic and batman iv specific partsMarek Lindner
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Acked-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2012-05-11batman-adv: replace HZ calculations with jiffies_to_msecs()Marek Lindner
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Acked-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2012-05-11batman-adv: rename last_valid to last_seenMarek Lindner
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Acked-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2012-05-11batman-adv: register batman ogm receive function during protocol initMarek Lindner
The B.A.T.M.A.N. IV OGM receive function still was hard-coded although it is a routing protocol specific function. This patch takes advantage of the dynamic packet handler registration to remove the hard-coded function calls. Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Acked-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2012-05-11batman-adv: introduce packet type handler array for incoming packetsMarek Lindner
The packet handler array replaces the growing switch statement, thus dealing with incoming packets in a more efficient way. It also adds to possibility to register packet handlers on the fly. Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Acked-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2012-05-11batman-adv: introduce is_single_hop_neigh variable to increase readabilityMarek Lindner
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Acked-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2012-05-11batman-adv: fix wrong dhcp option list browsingAntonio Quartulli
In is_type_dhcprequest(), while parsing a DHCP message, if the entry we found in the option list is neither a padding nor the dhcp-type, we have to ignore it and jump as many bytes as its length + 1. The "+ 1" byte is given by the subtype field itself that has to be jumped too. Reported-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
2012-05-116lowpan: IPv6 link local addressalex.bluesman.smirnov@gmail.com
According to the RFC4944 (Transmission of IPv6 Packets over IEEE 802.15.4 Networks), chapter 7: The IPv6 link-local address [RFC4291] for an IEEE 802.15.4 interface is formed by appending the Interface Identifier, as defined above, to the prefix FE80::/64. 10 bits 54 bits 64 bits +----------+-----------------------+----------------------------+ |1111111010| (zeros) | Interface Identifier | +----------+-----------------------+----------------------------+ This patch adds IPv6 address generation support for the 6lowpan interfaces. Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-11codel: Controlled Delay AQMEric Dumazet
An implementation of CoDel AQM, from Kathleen Nichols and Van Jacobson. http://queue.acm.org/detail.cfm?id=2209336 This AQM main input is no longer queue size in bytes or packets, but the delay packets stay in (FIFO) queue. As we don't have infinite memory, we still can drop packets in enqueue() in case of massive load, but mean of CoDel is to drop packets in dequeue(), using a control law based on two simple parameters : target : target sojourn time (default 5ms) interval : width of moving time window (default 100ms) Based on initial work from Dave Taht. Refactored to help future codel inclusion as a plugin for other linux qdisc (FQ_CODEL, ...), like RED. include/net/codel.h contains codel algorithm as close as possible than Kathleen reference. net/sched/sch_codel.c contains the linux qdisc specific glue. Separate structures permit a memory efficient implementation of fq_codel (to be sent as a separate work) : Each flow has its own struct codel_vars. timestamps are taken at enqueue() time with 1024 ns precision, allowing a range of 2199 seconds in queue, and 100Gb links support. iproute2 uses usec as base unit. Selected packets are dropped, unless ECN is enabled and packets can get ECN mark instead. Tested from 2Mb to 10Gb speeds with no particular problems, on ixgbe and tg3 drivers (BQL enabled). Usage: tc qdisc ... codel [ limit PACKETS ] [ target TIME ] [ interval TIME ] [ ecn ] qdisc codel 10: parent 1:1 limit 2000p target 3.0ms interval 60.0ms ecn Sent 13347099587 bytes 8815805 pkt (dropped 0, overlimits 0 requeues 0) rate 202365Kbit 16708pps backlog 113550b 75p requeues 0 count 116 lastcount 98 ldelay 4.3ms dropping drop_next 816us maxpacket 1514 ecn_mark 84399 drop_overlimit 0 CoDel must be seen as a base module, and should be used keeping in mind there is still a FIFO queue. So a typical setup will probably need a hierarchy of several qdiscs and packet classifiers to be able to meet whatever constraints a user might have. One possible example would be to use fq_codel, which combines Fair Queueing and CoDel, in replacement of sfq / sfq_red. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Dave Taht <dave.taht@bufferbloat.net> Cc: Kathleen Nichols <nichols@pollere.com> Cc: Van Jacobson <van@pollere.net> Cc: Tom Herbert <therbert@google.com> Cc: Matt Mathis <mattmathis@google.com> Cc: Yuchung Cheng <ycheng@google.com> Cc: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-11net_sched: update bstats in dequeue()Eric Dumazet
Class bytes/packets stats can be misleading because they are updated in enqueue() while packet might be dropped later. We already fixed all qdiscs but sch_atm. This patch makes the final cleanup. class rate estimators can now match qdisc ones. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-11net, drivers/net: Convert compare_ether_addr_64bits to ether_addr_equal_64bitsJoe Perches
Use the new bool function ether_addr_equal_64bits to add some clarity and reduce the likelihood for misuse of compare_ether_addr_64bits for sorting. Done via cocci script: $ cat compare_ether_addr_64bits.cocci @@ expression a,b; @@ - !compare_ether_addr_64bits(a, b) + ether_addr_equal_64bits(a, b) @@ expression a,b; @@ - compare_ether_addr_64bits(a, b) + !ether_addr_equal_64bits(a, b) @@ expression a,b; @@ - !ether_addr_equal_64bits(a, b) == 0 + ether_addr_equal_64bits(a, b) @@ expression a,b; @@ - !ether_addr_equal_64bits(a, b) != 0 + !ether_addr_equal_64bits(a, b) @@ expression a,b; @@ - ether_addr_equal_64bits(a, b) == 0 + !ether_addr_equal_64bits(a, b) @@ expression a,b; @@ - ether_addr_equal_64bits(a, b) != 0 + ether_addr_equal_64bits(a, b) @@ expression a,b; @@ - !!ether_addr_equal_64bits(a, b) + ether_addr_equal_64bits(a, b) Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-11etherdevice.h: Add ether_addr_equal_64bitsJoe Perches
Add an optimized boolean function to check if 2 ethernet addresses are the same. This is to avoid any confusion about compare_ether_addr_64bits returning an unsigned, and not being able to use the compare_ether_addr_64bits function for sorting ala memcmp. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-11drivers/net: Convert compare_ether_addr to ether_addr_equalJoe Perches
Use the new bool function ether_addr_equal to add some clarity and reduce the likelihood for misuse of compare_ether_addr for sorting. Done via cocci script: $ cat compare_ether_addr.cocci @@ expression a,b; @@ - !compare_ether_addr(a, b) + ether_addr_equal(a, b) @@ expression a,b; @@ - compare_ether_addr(a, b) + !ether_addr_equal(a, b) @@ expression a,b; @@ - !ether_addr_equal(a, b) == 0 + ether_addr_equal(a, b) @@ expression a,b; @@ - !ether_addr_equal(a, b) != 0 + !ether_addr_equal(a, b) @@ expression a,b; @@ - ether_addr_equal(a, b) == 0 + !ether_addr_equal(a, b) @@ expression a,b; @@ - ether_addr_equal(a, b) != 0 + ether_addr_equal(a, b) @@ expression a,b; @@ - !!ether_addr_equal(a, b) + ether_addr_equal(a, b) Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-11be2net: avoid disabling sriov while VFs are assignedSathya Perla
Calling pci_disable_sriov() while VFs are assigned to VMs causes kernel panic. This patch uses PCI_DEV_FLAGS_ASSIGNED bit state of the VF's pci_dev to avoid this. Also, the unconditional function reset cmd issued on a PF probe can delete the VF configuration for the previously enabled VFs. A scratchpad register is now used to issue a function reset only when needed (i.e., in a crash dump scenario.) Signed-off-by: Sathya Perla <sathya.perla@emulex.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-11l2tp: fix data packet sequence number handlingJames Chapman
If enabled, L2TP data packets have sequence numbers which a receiver can use to drop out of sequence frames or try to reorder them. The first frame has sequence number 0, but the L2TP code currently expects it to be 1. This results in the first data frame being handled as out of sequence. This one-line patch fixes the problem. Signed-off-by: James Chapman <jchapman@katalix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-11l2tp: fix reorder timeout recoveryJames Chapman
When L2TP data packet reordering is enabled, packets are held in a queue while waiting for out-of-sequence packets. If a packet gets lost, packets will be held until the reorder timeout expires, when we are supposed to then advance to the sequence number of the next packet but we don't currently do so. As a result, the data channel is stuck because we are waiting for a packet that will never arrive - all packets age out and none are passed. The fix is to add a flag to the session context, which is set when the reorder timeout expires and tells the receive code to reset the next expected sequence number to that of the next packet in the queue. Tested in a production L2TP network with Starent and Nortel L2TP gear. Signed-off-by: James Chapman <jchapman@katalix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-11tcp: Out-line tcp_try_rmem_schedulePavel Emelyanov
As proposed by Eric, make the tcp_input.o thinner. add/remove: 1/1 grow/shrink: 1/4 up/down: 868/-1329 (-461) function old new delta tcp_try_rmem_schedule - 864 +864 tcp_ack 4811 4815 +4 tcp_validate_incoming 817 815 -2 tcp_collapse 860 858 -2 tcp_send_rcvq 555 353 -202 tcp_data_queue 3435 3033 -402 tcp_prune_queue 721 - -721 Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-11tcp: Schedule rmem for rcvq repair sendPavel Emelyanov
As noted by Eric, no checks are performed on the data size we're putting in the read queue during repair. Thus, validate the given data size with the common rmem management routine. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-11tcp: Move rcvq sending to tcp_input.cPavel Emelyanov
It actually works on the input queue and will use its read mem routines, thus it's better to have in in the tcp_input.c file. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-11Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-next
2012-05-10ixgbe: update version numberDon Skidmore
Update version number to better match the version of the out of tree driver with similar functionality. Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-05-10ixgbe: cleanup the hwmon function callsDon Skidmore
When the hwmon code was initially added it was with the assumption that a sysfs patch would be also coming soon. Since that isn't the case some clean up needs to be done. This patch does that. Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com> Tested-by: Stephen Ko <stephen.s.ko@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-05-10ixgbe: support software timestampingJacob Keller
Kernel software timestamping requires that the driver calls skb_tx_timestamp just before passing the skb to the MAC, in order to provide the best software timestamps. This patch adds this call for that support. Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-05-10ixgbe: add support for get_ts_infoJacob Keller
This patch adds support for the ethtool get_ts_info operation, which enables access of available timestamp/timesync support for that device. It can query which ptp clock device is associated with the particular port. Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Stephen Ko <stephen.s.ko@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-05-10ixgbe: correct disable_rx_buff timeoutJacob Keller
The current value of the udelay timeout for ixgbe_disable_rx_buff is too short. This causes the security path to not not be properly disabled during the section that is meant to have it turned off. The end result causes a race condition that results in RX issues. Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-05-10ixgbe: Enable timesync clock-out feature for PPS support on X540Jacob E Keller
This patch enables the PPS system in the PHC framework, by enabling the clock-out feature on the X540 device. Causes the SDP0 to be set as a 1Hz clock. Also configures the timesync interrupt cause in order to report each pulse to the PPS via the PHC framework, which can be used for general system clock synchronization. (This allows a stable method for tuning the general system time via the on-board SYSTIM register based clock.) Signed-off-by: Jacob E Keller <jacob.e.keller@intel.com> Tested-by: Stephen Ko <stephen.s.ko@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-05-10ixgbe: Hardware Timestamping + PTP Hardware Clock (PHC)Jacob Keller
This patch enables hardware timestamping for use with PTP software by extracting a ns counter from an arbitrary fixed point cycles counter. The hardware generates SYSTIME registers using the DMA tick which changes based on the current link speed. These SYSTIME registers are converted to ns using the cyclecounter and timecounter structures provided by the kernel. Using the SO_TIMESTAMPING api, software can enable and access timestamps for PTP packets. The SO_TIMESTAMPING API has space for 3 different kinds of timestamps, SYS, RAW, and SOF. SYS hardware timestamps are hardware ns values that are then scaled to the software clock. RAW hardware timestamps are the direct raw value of the ns counter. SOF software timestamps are the software timestamp calculated as close as possible to the software transmit, but are not offloaded to the hardware. This patch only supports the RAW hardware timestamps due to inefficiency of the SYS design. This patch also enables the PHC subsystem features for atomically adjusting the cycle register, and adjusting the clock frequency in parts per billion. This frequency adjustment works by slightly adjusting the value added to the cycle registers each DMA tick. This causes the hardware registers to overflow rapidly (approximately once every 34 seconds, when at 10gig link). To solve this, the timecounter structure is used, along with a timer set for every 25 seconds. This allows for detecting register overflow and converting the cycle counter registers into ns values needed for providing useful timestamps to the network stack. Only the basic required clock functions are supported at this time, although the hardware supports some ancillary features and these could easily be enabled in the future. Note that use of this hardware timestamping requires modifying daemon software to use the SO_TIMESTAMPING API for timestamps, and the ptp_clock PHC framework for accessing the clock. The timestamps have no relation to the system time at all, so software must use the posix clock generated by the PHC framework instead. Signed-off-by: Jacob E Keller <jacob.e.keller@intel.com> Tested-by: Stephen Ko <stephen.s.ko@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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