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path: root/drivers/s390/net/qeth_core_main.c
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2009-11-16qeth: rework TSO functionsFrank Blaschka
The maximum TSO size OSA can handle is 15 * PAGE_SIZE. This patch reduces gso_max_size to this value and adds some sanity checks and statistics to the TSO implementation. Since only layer 3 is able to do TSO move all TSO related functions to the qeth_l3 module. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-16qeth: Recognize return codes of ccw_device_set_onlineUrsula Braun
Setting a qeth device online requires to call function ccw_device_set_online() for read-, write-, and data-subchannel. Failures should be detected immediately without an attempt to invoke follow-on activity qeth_qdio_clear_card()., In addition, ccw_device_set_online calls are consolidated in qeth_core_main.c only. Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-16qeth: Exploit Connection IsolationEinar Lueck
Isolate data connection to a shared OSA card against other data connections to the same OSA card. Connectivity between isolated data connections sharing the same OSA card is therefore possible only through external network gear (e.g. a router). Signed-off-by: Einar Lueck <elelueck@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-05qeth: Convert ethtool get_stats_count() ops to get_sset_count()Ben Hutchings
This string query operation was supposed to be replaced by the generic get_sset_count() starting in 2007. Convert qeth's implementation. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-26qeth: display service_level info only when valid.Klaus-Dieter Wacker
qeth displayed an entry in /proc/service_level even when no valid MCL-string was available (the MCL info is blank). The change is to create an entry in /proc/service_level only when MCL-string is non-zero. Signed-off-by: Klaus-Dieter Wacker <kdwacker@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-26qeth: Cleanup for cast-type determination.Klaus-Dieter Wacker
Clear separation of cast-type determination (send path) for layer-2 resp. layer-3. Allowing to have inline functions for qeth layer- discipline. Signed-off-by: Klaus-Dieter Wacker <kdwacker@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-26qeth: HiperSockets SIGA retry support on CC=2.Klaus-Dieter Wacker
Qeth HiperSockets support now retries sending of packets when the IBM System z signals a temporary resource shortage (e.g. target buffer full). The packet is enqueued into the device queue. After 3 times of unsuccessful send the packet is dropped. Signed-off-by: Klaus-Dieter Wacker <kdwacker@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-16[S390] pm: qeth driver power management callbacksFrank Blaschka
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-06-03net: skb->dst accessorsEric Dumazet
Define three accessors to get/set dst attached to a skb struct dst_entry *skb_dst(const struct sk_buff *skb) void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst) void skb_dst_drop(struct sk_buff *skb) This one should replace occurrences of : dst_release(skb->dst) skb->dst = NULL; Delete skb->dst field Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-20qeth: Clear SBALF15 in any case for output buffers.Klaus-Dieter Wacket
Function qeth_clear_output_buffer for HiperSockets may not clear all 16 SBALEs, but only the used ones. The error flag in SBALF15 has to be cleared in any case. Signed-off-by: Klaus-Dieter Wacker <kdwacker@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-20qeth: omit upstream checksumming for HiperSocketsUrsula Braun
For HiperSocket devices receive-path checksumming is not required. Thus NO_CHECKSUMMING is used as default for HiperSocket interfaces. For layer3 devices configured with NO_CHECKSUMMING received skbs should have set their ip_summed field to CHECKSUM_UNNECESSARY. Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-26Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6Linus Torvalds
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (81 commits) [S390] remove duplicated #includes [S390] cpumask: use mm_cpumask() wrapper [S390] cpumask: Use accessors code. [S390] cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits. [S390] cpumask: remove cpu_coregroup_map [S390] fix clock comparator save area usage [S390] Add hwcap flag for the etf3 enhancement facility [S390] Ensure that ipl panic notifier is called late. [S390] fix dfp elf hwcap/facility bit detection [S390] smp: perform initial cpu reset before starting a cpu [S390] smp: fix memory leak on __cpu_up [S390] ipl: Improve checking logic and remove switch defaults. [S390] s390dbf: Remove needless check for NULL pointer. [S390] s390dbf: Remove redundant initilizations. [S390] use kzfree() [S390] BUG to BUG_ON changes [S390] zfcpdump: Prevent zcore from beeing built as a kernel module. [S390] Use csum_partial in checksum.h [S390] cleanup lowcore.h [S390] eliminate ipl_device from lowcore ...
2009-03-26[S390] qdio: report SIGA errors directlyJan Glauber
Errors from SIGA instructions are stored in the per queue qdio_error and reported back when the queue handler is called. That opens a race when multiple error conditions occur simultanously. Report SIGA errors immediately in the return value of do_QDIO so the upper layer can react and SIGA errors no longer interfere with other errors. Move the SIGA error handling in qeth from the outbound handler to qeth_flush_buffers. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
2009-03-25qeth: fix wait_event_timeout handlingHeiko Carstens
wait_event_timeout just takes the numnber of jiffies to wait as an argument. That value does not include jiffies itself. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-25qeth: remove EDDPFrank Blaschka
Performance measurements showed EDDP does not lower CPU costs but increase them. So we dump out EDDP code from qeth driver. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-25qeth: add statistics for tx csumFrank Blaschka
Add statistics counter for software tx checksumming. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-06s390: remove s390_root_dev_*()Mark McLoughlin
Replace s390_root_dev_register() with root_device_register() etc. [Includes fix from Cornelia Huck] Signed-off-by: Mark McLoughlin <markmc@redhat.com> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-04qeth: No large send using EDDP for HiperSockets.Klaus-Dieter Wacker
From: Klaus-Dieter Wacker <kdwacker@de.ibm.com> The device driver qeth dos not support large send using EDDP for HiperSockets. Signed-off-by: Klaus-Dieter Wacker <kdwacker@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-04qeth: do not spin for SETIP ip assist commandFrank Blaschka
The ip assist hw command for setting an IP address last unacceptable long so we can not spin while we waiting for the irq. Since we can ensure process context for all occurrences of this command we can use wait. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-04qeth: avoid crash in case of layer mismatch for VSWITCHUrsula Braun
For z/VM GuestLAN or VSWITCH devices the transport layer is configured in z/VM. The layer2 attribute of a participating Linux device has to match the z/VM definition. In case of a mismatch Linux currently crashes in qeth recovery due to a reference to the not yet existing net_device. Solution: add a check for existence of net_device and add a message pointing to the mismatch of layer definitions in Linux and z/VM. Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-04qeth: exploit source MAC address for inbound layer3 packetsUrsula Braun
OSA-devices operating in layer3 mode offer adding of the source MAC address to the QDIO header of inbound packets. The qeth driver can exploit this functionality to replace FAKELL-entries in the ethernet header of received packets. Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-04qeth: HiperSockets mcl string conversion (pre z9 mach)Klaus-Dieter Wacker
The pre z9 machines provide an mcl string in EBCDIC format, z9 or later provide string in ASCII format. Signed-off-by: Klaus-Dieter Wacker <kdwacker@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-25[S390] convert qeth printks to dev_xxx and pr_xxx macros.Frank Blaschka
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] s390: Remove redundant testJulia Lawall
The loop above the modified code only terminates when rc is a valid pointer. A simplified version of the semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r exists@ local idexpression x; expression E; position p1,p2; @@ if (x@p1 == NULL || ...) { ... when forall return ...; } ... when != \(x=E\|x--\|x++\|--x\|++x\|x-=E\|x+=E\|x|=E\|x&=E\|&x\) ( x@p2 == NULL | x@p2 != NULL ) // another path to the test that is not through p1? @s exists@ local idexpression r.x; position r.p1,r.p2; @@ ... when != x@p1 ( x@p2 == NULL | x@p2 != NULL ) @fix depends on !s@ position r.p1,r.p2; expression x,E; statement S1,S2; @@ ( - if ((x@p2 != NULL) || ...) S1 | - if ((x@p2 == NULL) && ...) S1 | - BUG_ON(x@p2 == NULL); ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] service level interface.Martin Schwidefsky
Add a new proc interface /proc/service_levels that allows any code to report a relevant service level, e.g. the microcode level of devices, the service level of the hypervisor, etc. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25[S390] qdio: fix qeth port count detectionJan Glauber
qeth needs to get the port count information before qdio has allocated a page for the chsc operation. Extend qdio_get_ssqd_desc() to store the data in the specified structure. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-10-27qeth: fix offset error in non prealloc header pathFrank Blaschka
For the non preallocated qeth header code path we should not change the header length. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-10-11Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1075 commits) myri10ge: update driver version number to 1.4.3-1.369 r8169: add shutdown handler r8169: preliminary 8168d support r8169: support additional 8168cp chipset r8169: change default behavior for mildly identified 8168c chipsets r8169: add a new 8168cp flavor r8169: add a new 8168c flavor (bis) r8169: add a new 8168c flavor r8169: sync existing 8168 device hardware start sequences with vendor driver r8169: 8168b Tx performance tweak r8169: make room for more specific 8168 hardware start procedure r8169: shuffle some registers handling around (8168 operation only) r8169: new phy init parameters for the 8168b r8169: update phy init parameters r8169: wake up the PHY of the 8168 af_key: fix SADB_X_SPDDELETE response ath9k: Fix return code when ath9k_hw_setpower() fails on reset ath9k: remove nasty FAIL macro from ath9k_hw_reset() gre: minor cleanups in netlink interface gre: fix copy and paste error ...
2008-10-10[S390] bus_id -> dev_name conversionsKay Sievers
bus_id -> dev_name() conversions in s390 code. [cornelia.huck@de.ibm.com: minor adaptions] Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-09-24qeth: avoid qeth recovery problemsUrsula Braun
Do not touch IFF_UP flag during qeth recovery, but invoke dev_close() in case of failing recovery. Cancel outstanding control commands in case of Data Checks or Channel Checks. Do not invoke qeth_l2_del_all_mc() in case of a hard stop to speed up removal of qeth devices. Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-08-27qeth: preallocated header account offsetFrank Blaschka
When a preallocated header qdio buffer is filled we have to account the offset for the data length. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-08-01[S390] qeth: avoid use of include/asm-s390Martin Schwidefsky
The planned move of include/asm-s390 to arch/s390/include/asm requires that all includes for asm headers use include/asm and not include/asm-s390. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-08-01[S390] qeth: preallocated qeth header for hiper socketFrank Blaschka
For hiper socket devices this patch will economize the reallocation of the tx skb data segment by allocating separate memory for the qdio transport information (qeth header). Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-07-26qeth: use dev->ml_priv instead of dev->privHeiko Carstens
From: Heiko Carstens <heiko.carstens@de.ibm.com> This makes qeth working again after git commit e3c50d5d25ac09efd9acbe2b2a3e365466de84ed "netdev: netdev_priv() can now be sane again.". Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-17[S390] qdio: new qdio driver.Jan Glauber
List of major changes: - split qdio driver into several files - seperation of thin interrupt code - improved handling for multiple thin interrupt devices - inbound and outbound processing now always runs in tasklet context - significant less tasklet schedules per interrupt needed - merged qebsm with non-qebsm handling - cleanup qdio interface and added kerneldoc - coding style Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Utz Bacher <utz.bacher@de.ibm.com> Reviewed-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2008-07-14[S390] Cleanup qeth print messages.Frank Blaschka
Cc: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2008-07-14[S390] cio: introduce fcx enabled scsw formatPeter Oberparleiter
Extend the scsw data structure to the format required by fcx. Also provide helper functions for easier access to fields which are present in both the traditional as well as the modified format. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2008-06-10qeth: Prepare-function to call s390dbf was wrongPeter Tiedemann
Prepare-function to call s390dbf was wrong handling variable arguments. This worked as macro but not as function any more. Now using va_list processing. Signed-off-by: Peter Tiedemann <ptiedem@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-06-10qeth: reduce number of kernel messagesFrank Blaschka
Remove unnecessary messages. Write important debug information to s390dbf. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-06-10qeth: Use ccw_device_get_id().Cornelia Huck
Get the devno from the ccw device via ccw_device_get_id() instead of parsing the bus_id. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-29qeth: read number of ports from cardUrsula Braun
Read out number of ports from the hardware. Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-29qeth: rework fast pathFrank Blaschka
Remove unnecessary traces. Remove unnecessary wrappers for skb functions. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-29qeth: provide get ethtool settingsFrank Blaschka
Load balancing bonding queries the speed of the slave interfaces. To support a bond consisting of different slave speeds we have to report the speed by ethtool settings. Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-29qeth module size reduction.Peter Tiedemann
Replace complex macro for s390dbf calls by equivalent function. This reduces module size about 10% without visible performance impact. Signed-off-by: Peter Tiedemann <ptiedem@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-29ccwgroup: Unify parsing for group attribute.Ursula Braun
Instead of having each driver for ccwgroup slave device parsing the input itself and calling ccwgroup_create(), introduce a new function ccwgroup_create_from_string() and handle parsing inside the ccwgroup core. Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-16qeth: core code should alloc headroom for LLC protocolFrank Blaschka
Allocate headroom for TR_HLEN but using only ETH_HLEN causes rx performance degradation. Allocate ETH_HLEN for ethernet and TR_HLEN for token ring (layer 3 mode). Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-16qeth: improving debug message handlingPeter Tiedemann
Improving debug message handling, moving ipa into messages from kernel to dbf, some cleanups and typo fixes. Signed-off-by: Peter Tiedemann <ptiedem@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-16qeth: set lan_online flag after a received STARTLANUrsula Braun
Problem: A STARTLAN command from the adapter may arrive while a qeth recovery is currently running with a failed qeth STARTLAN. Usually qeth schedules a recovery when receiving a STARTLAN command from the adapter. But another recovery scheduled while a recovery is already running never starts. Thus the qeth-administered lan_online flag remains zero in this scenario, even though the adapter-STARTLAN has happened. Solution: Set lan_online flag for a received STARTLAN from the adapter in case scheduled recovery does not start. Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-16qeth: allow qdio queue element addresses > 2GBUrsula Braun
OSA-adapters do not have an address limitation for the qdio queue structures except the MAX storage level of the current processor. And due to a recent z/VM APAR there is no longer a restriction to allocate qdio structures below 2 GB. Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-03-17qeth: new qeth device driverFrank Blaschka
List of major changes and improvements: no manipulation of the global ARP constructor clean code split into core, layer 2 and layer 3 functionality better exploitation of the ethtool interface better representation of the various hardware capabilities fix packet socket support (tcpdump), no fake_ll required osasnmpd notification via udev events coding style and beautification Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
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