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* bridge: Add filtering support for default_pvidVlad Yasevich2014-10-064-7/+136
| | | | | | | | | | | | | | | | | | Currently when vlan filtering is turned on on the bridge, the bridge will drop all traffic untill the user configures the filter. This isn't very nice for ports that don't care about vlans and just want untagged traffic. A concept of a default_pvid was recently introduced. This patch adds filtering support for default_pvid. Now, ports that don't care about vlans and don't define there own filter will belong to the VLAN of the default_pvid and continue to receive untagged traffic. This filtering can be disabled by setting default_pvid to 0. Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bridge: Simplify pvid checks.Vlad Yasevich2014-10-062-7/+4
| | | | | | | | | | Currently, if the pvid is not set, we return an illegal vlan value even though the pvid value is set to 0. Since pvid of 0 is currently invalid, just return 0 instead. This makes the current and future checks simpler. Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bridge: Add a default_pvid sysfs attributeVlad Yasevich2014-10-063-0/+48
| | | | | | | | | This patch allows the user to set and retrieve default_pvid value. A new value can only be stored when vlan filtering is disabled. Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: pxa168_eth: avoid using signed char for bitopsAntoine Ténart2014-10-061-6/+6
| | | | | | | | | Signedness bugs may occur when using signed char for bitops, depending on if the highest bit is ever used. Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'isdn-next'David S. Miller2014-10-063-13/+7
|\ | | | | | | | | | | | | | | | | | | | | | | | | Tilman Schmidt says: ==================== ISDN patches for net-next Here's a series of patches for the ISDN CAPI subsystem and the Gigaset ISDN driver. Please merge via net-next. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * isdn/gigaset: use USB API function usb_endpoint_num()Tilman Schmidt2014-10-061-7/+5
| | | | | | | | | | | | | | | | | | Use function usb_endpoint_num() for the bulk endpoint and store the endpoint number in the cardstate structure instead of the raw endpoint address value. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
| * isdn/gigaset: drop unused cardstate structure memberTilman Schmidt2014-10-061-2/+0
| | | | | | | | | | | | | | Field int_in_endpointAddr was set but never used. Drop it. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
| * isdn/gigaset: improve error handling when leaving DLE modeTilman Schmidt2014-10-061-1/+2
| | | | | | | | | | | | | | | | Avoid cascading warnings when leaving DLE mode fails by clearing the DLE flag before entering recovery. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
| * isdn/capi: drop two dead if branchesTilman Schmidt2014-10-061-3/+0
|/ | | | | | | | | | The last branch in command_2_index() cannot be reached since c==0xff is already caught by the first "if". The empty second branch makes no difference since no other branch will be taken for c<0x0f. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: sched: suspicious RCU usage in qdisc_watchdogJohn Fastabend2014-10-051-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Suspicious RCU usage in qdisc_watchdog call needs to be done inside rcu_read_lock/rcu_read_unlock. And then Qdisc destroy operations need to ensure timer is cancelled before removing qdisc structure. [ 3992.191339] =============================== [ 3992.191340] [ INFO: suspicious RCU usage. ] [ 3992.191343] 3.17.0-rc6net-next+ #72 Not tainted [ 3992.191345] ------------------------------- [ 3992.191347] include/net/sch_generic.h:272 suspicious rcu_dereference_check() usage! [ 3992.191348] [ 3992.191348] other info that might help us debug this: [ 3992.191348] [ 3992.191351] [ 3992.191351] rcu_scheduler_active = 1, debug_locks = 1 [ 3992.191353] no locks held by swapper/1/0. [ 3992.191355] [ 3992.191355] stack backtrace: [ 3992.191358] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.17.0-rc6net-next+ #72 [ 3992.191360] Hardware name: /DZ77RE-75K, BIOS GAZ7711H.86A.0060.2012.1115.1750 11/15/2012 [ 3992.191362] 0000000000000001 ffff880235803e48 ffffffff8178f92c 0000000000000000 [ 3992.191366] ffff8802322224a0 ffff880235803e78 ffffffff810c9966 ffff8800a5fe3000 [ 3992.191370] ffff880235803f30 ffff8802359cd768 ffff8802359cd6e0 ffff880235803e98 [ 3992.191374] Call Trace: [ 3992.191376] <IRQ> [<ffffffff8178f92c>] dump_stack+0x4e/0x68 [ 3992.191387] [<ffffffff810c9966>] lockdep_rcu_suspicious+0xe6/0x130 [ 3992.191392] [<ffffffff8167213a>] qdisc_watchdog+0x8a/0xb0 [ 3992.191396] [<ffffffff810f93f2>] __run_hrtimer+0x72/0x420 [ 3992.191399] [<ffffffff810f9bcd>] ? hrtimer_interrupt+0x7d/0x240 [ 3992.191403] [<ffffffff816720b0>] ? tc_classify+0xc0/0xc0 [ 3992.191406] [<ffffffff810f9c4f>] hrtimer_interrupt+0xff/0x240 [ 3992.191410] [<ffffffff8109e4a5>] ? __atomic_notifier_call_chain+0x5/0x140 [ 3992.191415] [<ffffffff8103577b>] local_apic_timer_interrupt+0x3b/0x60 [ 3992.191419] [<ffffffff8179c2b5>] smp_apic_timer_interrupt+0x45/0x60 [ 3992.191422] [<ffffffff8179a6bf>] apic_timer_interrupt+0x6f/0x80 [ 3992.191424] <EOI> [<ffffffff815ed233>] ? cpuidle_enter_state+0x73/0x2e0 [ 3992.191432] [<ffffffff815ed22e>] ? cpuidle_enter_state+0x6e/0x2e0 [ 3992.191437] [<ffffffff815ed567>] cpuidle_enter+0x17/0x20 [ 3992.191441] [<ffffffff810c0741>] cpu_startup_entry+0x3d1/0x4a0 [ 3992.191445] [<ffffffff81106fc6>] ? clockevents_config_and_register+0x26/0x30 [ 3992.191448] [<ffffffff81033c16>] start_secondary+0x1b6/0x260 Fixes: b26b0d1e8b1 ("net: qdisc: use rcu prefix and silence sparse warnings") Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Acked-by: Cong Wang <cwang@twopensource.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: dsa: do not call phy_start_anegFlorian Fainelli2014-10-051-1/+0
| | | | | | | | | | | | | | | | Commit f7f1de51edbd ("net: dsa: start and stop the PHY state machine") add calls to phy_start() in dsa_slave_open() respectively phy_stop() in dsa_slave_close(). We also call phy_start_aneg() in dsa_slave_create(), and this call is messing up with the PHY state machine, since we basically start the auto-negotiation, and later on restart it when calling phy_start(). phy_start() does not currently handle the PHY_FORCING or PHY_AN states properly, but such a fix would be too invasive for this window. Fixes: f7f1de51edbd ("net: dsa: start and stop the PHY state machine") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Removed unused inet6 address stateSébastien Barré2014-10-051-1/+0
| | | | | | | | | the inet6 state INET6_IFADDR_STATE_UP only appeared in its definition. Cc: Christoph Paasch <christoph.paasch@uclouvain.be> Cc: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Sébastien Barré <sebastien.barre@uclouvain.be> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: Cleanup skb cloning by adding SKB_FCLONE_FREEVijay Subramanian2014-10-052-7/+8
| | | | | | | | | | | | | | | | | SKB_FCLONE_UNAVAILABLE has overloaded meaning depending on type of skb. 1: If skb is allocated from head_cache, it indicates fclone is not available. 2: If skb is a companion fclone skb (allocated from fclone_cache), it indicates it is available to be used. To avoid confusion for case 2 above, this patch replaces SKB_FCLONE_UNAVAILABLE with SKB_FCLONE_FREE where appropriate. For fclone companion skbs, this indicates it is free for use. SKB_FCLONE_UNAVAILABLE will now simply indicate skb is from head_cache and cannot / will not have a companion fclone. Signed-off-by: Vijay Subramanian <subramanian.vijay@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* mlx4: add a new xmit_more counterEric Dumazet2014-10-054-8/+19
| | | | | | | | | | | | | | ethtool -S reports a new counter, tracking number of time doorbell was not triggered, because skb->xmit_more was set. $ ethtool -S eth0 | egrep "tx_packet|xmit_more" tx_packets: 2413288400 xmit_more: 666121277 I merged the tso_packet false sharing avoidance in this patch as well. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'gudp'David S. Miller2014-10-048-40/+235
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tom Herbert says: ==================== net: Generic UDP Encapsulation Generic UDP Encapsulation (GUE) is UDP encapsulation protocol which encapsulates packets of various IP protocols. The GUE protocol is described in http://tools.ietf.org/html/draft-herbert-gue-01. The receive path of GUE is implemented in the FOU over UDP module (FOU). This includes a UDP encap receive function for GUE as well as GUE specific GRO functions. Management and configuration of GUE ports shares most of the same code with FOU. For the transmit path, the previous FOU support for IPIP, sit, and GRE was simply extended for GUE (when GUE is enabled insert the GUE header on transmit in addition to UDP header inserted for FOU). Semantically GUE is the same as FOU in that the encapsulation (UDP and GUE headers) that are inserted on transmission and removed on reception so that IP packet is processed with the inner header. This patch set includes: - Some fixes to FOU, removal of IPv4,v6 specific GRO functions - Support to configure a GUE receive port - Implementation of GUE receive path (normal and GRO) - Additions to ip_tunnel netlink to configure GUE - GUE header inserion in ip_tunnel transmit path v2: - Include net/gue.h in patch set Testing: I ran performance numbers using netperf TCP_RR with 200 streams, comparing encapsulation without GUE, encapsulation with GUE, and encapsulation with FOU. GRE TCP_STREAM IPv4, FOU, UDP checksum enabled 14.04% TX CPU utilization 13.17% RX CPU utilization 9211 Mbps IPv4, GUE, UDP checksum enabled 14.99% TX CPU utilization 13.79% RX CPU utilization 9185 Mbps IPv4, FOU, UDP checksum disabled 13.14% TX CPU utilization 23.18% RX CPU utilization 9277 Mbps IPv4, GUE, UDP checksum disabled 13.66% TX CPU utilization 23.57% RX CPU utilization 9184 Mbps TCP_RR IPv4, FOU, UDP checksum enabled 94.2% CPU utilization 155/249/460 90/95/99% latencies 1.17018e+06 tps IPv4, GUE, UDP checksum enabled 93.9% CPU utilization 158/253/472 90/95/99% latencies 1.15045e+06 tps IPIP TCP_STREAM FOU, UDP checksum enabled 15.28% TX CPU utilization 13.92% RX CPU utilization 9342 Mbps GUE, UDP checksum enabled 13.99% TX CPU utilization 13.34% RX CPU utilization 9210 Mbps FOU, UDP checksum disabled 15.08% TX CPU utilization 24.64% RX CPU utilization 9226 Mbps GUE, UDP checksum disabled 15.90% TX CPU utilization 24.77% RX CPU utilization 9197 Mbps TCP_RR FOU, UDP checksum enabled 94.23% CPU utilization 149/237/429 90/95/99% latencies 1.19553e+06 tps GUE, UDP checksum enabled 93.75% CPU utilization 152/243/442 90/95/99% latencies 1.17027e+06 tps SIT TCP_STREAM FOU, UDP checksum enabled 14.47% TX CPU utilization 14.58% RX CPU utilization 9106 Mbps GUE, UDP checksum enabled 15.09% TX CPU utilization 14.84% RX CPU utilization 9080 Mbps FOU, UDP checksum disabled 15.70% TX CPU utilization 27.93% RX CPU utilization 9097 Mbps GUE, UDP checksum disabled 15.04% TX CPU utilization 27.54% RX CPU utilization 9073 Mbps TCP_RR FOU, UDP checksum enabled 96.9% CPU utilization 170/281/581 90/95/99% latencies 1.03372e+06 tps GUE, UDP checksum enabled 97.16% CPU utilization 172/286/576 90/95/99% latencies 1.00469e+06 tps ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * ip_tunnel: Add GUE supportTom Herbert2014-10-042-0/+14
| | | | | | | | | | | | | | | | | | This patch allows configuring IPIP, sit, and GRE tunnels to use GUE. This is very similar to fou excpet that we need to insert the GUE header in addition to the UDP header on transmit. Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * gue: Receive side for Generic UDP EncapsulationTom Herbert2014-10-043-9/+217
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds support receiving for GUE packets in the fou module. The fou module now supports direct foo-over-udp (no encapsulation header) and GUE. To support this a type parameter is added to the fou netlink parameters. For a GUE socket we define gue_udp_recv, gue_gro_receive, and gue_gro_complete to handle the specifics of the GUE protocol. Most of the code to manage and configure sockets is common with the fou. Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * fou: eliminate IPv4,v6 specific GRO functionsTom Herbert2014-10-044-40/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes fou[46]_gro_receive and fou[46]_gro_complete functions. The v4 or v6 variants were chosen for the UDP offloads based on the address family of the socket this is not necessary or correct. Alternatively, this patch adds is_ipv6 to napi_gro_skb. This is set in udp6_gro_receive and unset in udp4_gro_receive. In fou_gro_receive the value is used to select the correct inet_offloads for the protocol of the outer IP header. Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * ip_tunnel: Account for secondary encapsulation header in max_headroomTom Herbert2014-10-041-1/+1
|/ | | | | | | | | When adjusting max_header for the tunnel interface based on egress device we need to account for any extra bytes in secondary encapsulation (e.g. FOU). Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: do not export skb_gro_receive()Eric Dumazet2014-10-041-1/+0
| | | | | | | | skb_gro_receive() is only called from tcp_gro_receive() which is not in a module. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* drivers/net/irda/Kconfig: Let SH_IRDA depend on HAS_IOMEMChen Gang2014-10-041-1/+1
| | | | | | | | | | | | | | | | | | | | SH_IRDA needs HAS_IOMEM, so depend on it. The related error(with allmodconfig under um): CC [M] drivers/net/irda/sh_irda.o drivers/net/irda/sh_irda.c: In function ‘sh_irda_probe’: drivers/net/irda/sh_irda.c:776:2: error: implicit declaration of function ‘ioremap_nocache’ [-Werror=implicit-function-declaration] self->membase = ioremap_nocache(res->start, resource_size(res)); ^ drivers/net/irda/sh_irda.c:776:16: warning: assignment makes pointer from integer without a cast [enabled by default] self->membase = ioremap_nocache(res->start, resource_size(res)); ^ drivers/net/irda/sh_irda.c:821:2: error: implicit declaration of function ‘iounmap’ [-Werror=implicit-function-declaration] iounmap(self->membase); ^ Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* drivers/net/ethernet/marvell/Kconfig: Let PXA168_ETH depend on HAS_IOMEMChen Gang2014-10-041-1/+1
| | | | | | | | | | | | | | PXA168_ETH need HAS_IOMEM, so depend on it, the related error (with allmodconfig under um): CC [M] drivers/net/ethernet/marvell/pxa168_eth.o drivers/net/ethernet/marvell/pxa168_eth.c: In function ‘pxa168_eth_probe’: drivers/net/ethernet/marvell/pxa168_eth.c:1605:2: error: implicit declaration of function ‘iounmap’ [-Werror=implicit-function-declaration] iounmap(pep->base); ^ Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* drivers/net/dsa/Kconfig: Let NET_DSA_BCM_SF2 depend on HAS_IOMEMChen Gang2014-10-041-0/+1
| | | | | | | | | | | | | | | NET_DSA_BCM_SF2 need HAS_IOMEM, so depend on it, the related error (with allmodconfig under um): CC [M] drivers/net/dsa/bcm_sf2.o drivers/net/dsa/bcm_sf2.c: In function ‘bcm_sf2_sw_setup’: drivers/net/dsa/bcm_sf2.c:487:3: error: implicit declaration of function ‘iounmap’ [-Werror=implicit-function-declaration] iounmap(*base); ^ Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* drivers/net/can/Kconfig: Let CAN_AT91 depend on HAS_IOMEMChen Gang2014-10-041-1/+1
| | | | | | | | | | | | | | | | | | | | CAN_AT91 needs HAS_IOMEM, so depends on it. The related error (with allmodconfig under um): CC [M] drivers/net/can/at91_can.o drivers/net/can/at91_can.c: In function ‘at91_can_probe’: drivers/net/can/at91_can.c:1329:2: error: implicit declaration of function ‘ioremap_nocache’ [-Werror=implicit-function-declaration] addr = ioremap_nocache(res->start, resource_size(res)); ^ drivers/net/can/at91_can.c:1329:7: warning: assignment makes pointer from integer without a cast [enabled by default] addr = ioremap_nocache(res->start, resource_size(res)); ^ drivers/net/can/at91_can.c:1384:2: error: implicit declaration of function ‘iounmap’ [-Werror=implicit-function-declaration] iounmap(addr); ^ Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of ↵David S. Miller2014-10-0410-77/+12
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-next Jeff Kirsher says: ==================== Intel Wired LAN Driver Updates 2014-10-02 This series contains updates to fm10k, igb, ixgbe and i40e. Alex provides two updates to the fm10k driver. First reduces the buffer size to 2k for all page sizes, since most frames only have a 1500 MTU so supporting a buffer size larger than this is somewhat wasteful. Second fixes an issue where the number of transmit queues was not being updated, so added the lines necessary to update the number of transmit queues. Rick Jones provides two patches to convert ixgbe, igb and i40e to use dev_consume_skb_any(). Emil provides two patches for ixgbe, first cleans up a couple of wait loops on auto-negotiation that were not needed. Second fixes an issue reported by Fujitsu/Red Hat, which consolidates the logic behind the dynamically setting of TXDCTL.WTHRESH depending on interrupt throttle rate (ITR) setting regardless of BQL. Ethan Zhao provides a cleanup patch for ixgbe where he noticed a duplicate define. Bernhard Kaindl provides a patch for igb to remove a source of latency spikes by not calling code that uses mdelay() for feeding a PHY stat while being called with a spinlock held. Todd bumps the igb version based on the recent changes. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * igb: bump version to 5.2.15Todd Fujinaka2014-10-021-1/+1
| | | | | | | | | | | | | | | | Bump version Signed-off-by: Todd Fujinaka <todd.fujinaka@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * i40e/igb: Convert to dev_consume_skb_any()Rick Jones2014-10-022-2/+2
| | | | | | | | | | | | | | | | | | | | Convert two more Intel NIC drivers to dev_consume_skb_any() to help make dropped packet profiling sane. Signed-off-by: Rick Jones <rick.jones2@hp.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Tested-by: Jim Young <jamesx.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * igb: remove blocking phy read from inside spinlockBernhard Kaindl2014-10-023-18/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove a source of latency spikes (in my case up to 10ms) by not calling code that uses mdelay() for feeding a phy statistic (rx errors for idle symbols - not data -> idle_errors) while being called with a spinlock held. As idle_errors isn't read, this patch only removes unused code and data. Later, more complicated changes may be applied to address the spinlock and allow for some PHY diagnostics by harvesting this PHY stats register fully. This patch is designed to fix the issue and be safe for longterm/stable. For the Intel e1000e driver, the same change was applied in 2008 with commit 23033fad5be0 ("e1000e: remove phy read from inside spinlock"). The mdelay is triggered by HW/SW semaphores, thus it depends on the HW. I've HW that triggers it even when idle. Others may trigger it only e.g. when Ethernet ports aquire or loose the link or on ifconfig up / down. We've noticed this first from delays in frame rx/tx due to the mdelay(). Example command for checking if the issue is triggered: cyclictest -Smp1 (Look for occasional "Max:" values > 4000 or use -b 4000 to stop if greater) It was observed with I350 ports connected to other I350 ports, but not if driver and EEPROM was modified to run the I350 in EEPROM-less mode. phy_stats.idle_errors and .receive_errors (isn't touched) occupy 64 not used bits in the adapter struct: Their allocation may be removed as well. Cc: Carolyn Wyborny <carolyn.wyborny@intel.com> Cc: Todd Fujinaka <todd.fujinaka@intel.com> Fixes: 12dcd86b75d5 ("igb: fix stats handling") (this added the spin_lock) Signed-off-by: Bernhard Kaindl <bk-linux@use.startmail.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * ixgbe: delete one duplicate marcro definition of IXGBE_MAX_L2A_QUEUESEthan Zhao2014-10-021-1/+0
| | | | | | | | | | | | | | | | | | There is typo in ixgbe.h, two marcro definition of IXGBE_MAX_L2A_QUEUES to 4, delete one, clear the compiler warning. Signed-off-by: Ethan Zhao <ethan.zhao@oracle.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * ixgbe: fix setting of TXDCTL.WTRHESH when ITR is set to 0 and no BQLEmil Tantilov2014-10-022-6/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch consolidates the logic behind dynamically setting TXDCTL.WTHRESH depending on interrupt throttle rate (ITR) setting regardless of BQL. Previously TXDCTL.WTHRESH was dynamically being set only with BQL being enabled, but we have to set it regardless of BQL when ITR is low to avoid Tx stalls/hangs. CC: John Greene <jogreene@redhat.com> Reported by: Masayuki Gouji <gouji.masayuki@jp.fujitsu.com> Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * ixgbe: remove wait loop on autoneg for copper devicesEmil Tantilov2014-10-021-41/+0
| | | | | | | | | | | | | | | | | | | | | | This patch removes couple of wait loops on autoneg that are not needed. During validation we noticed that the loops always time out, so there should be no user impact. Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * ixgbe: Convert the normal transmit complete path to dev_consume_skb_any()Rick Jones2014-10-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert the normal packet completion path to dev_consume_skb_any() so packet drop profiling via dropwatch or perf top -G -e skb_kfree_skb is not cluttered with false hits. Compile tested only. There is a dev_kfree_skb_any() in the routine ixgbe_ptp_tx_hwtstamp() in ixgbe_ptp.c that looks like a conversion candidate but I wasn't familiar enough with the code to pull the trigger. Signed-off-by: Rick Jones <rick.jones2@hp.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * fm10k: Correctly set the number of Tx queuesAlexander Duyck2014-10-021-1/+5
| | | | | | | | | | | | | | | | | | | | The number of Tx queues was not being updated due to some issues when generating the patches. This change makes sure to add the lines necessary to update the number of Tx queues correctly. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * fm10k: Reduce buffer size when pages are larger than 4KAlexander Duyck2014-10-021-6/+2
| | | | | | | | | | | | | | | | | | | | | | This change reduces the buffer size to 2K for all page sizes. The basic idea is that since most frames only have a 1500 MTU supporting a buffer size larger than this is somewhat wasteful. As such I have reduced the size to 2K for all page sizes which will allow for more uses per page. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
* | Merge branch 'mlx5-next'David S. Miller2014-10-0415-455/+804
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Eli Cohen says: ==================== mlx5 update for 3.18 This series integrates a new mechanism for populating and extracting field values used in the driver/firmware interaction around command mailboxes. Changes from V1: - Remove unused definition of memcpy_cpu_to_be32() - Remove definitions of non_existent_*() and use BUILD_BUG_ON() instead. - Added a patch one line patch to add support for ConnectX-4 devices. Changes from V0: - trimmed the auto-generated file to a minimum, as required by the reviewers. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net/mlx5_core: Add ConnectX-4 to list of supported devicesEli Cohen2014-10-041-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | Add the upcoming ConnectX-4 device to the list of supported devices by then mlx5 driver. Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net/mlx5_core: Identify resources by their typeEli Cohen2014-10-044-25/+60
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch puts a common part as the first field of mlx5_core_qp. This field is used to identify which resource generated an event. This is required since upcoming new resource types such as DC targets are allocated for the same numerical space as regular QPs and may generate the same events. By searching the resource in the same table we can then look at the common field to identify the resource. Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net/mlx5_core: use set/get macros in device capsEli Cohen2014-10-045-168/+298
| | | | | | | | | | | | | | | | | | | | | | | | Transform device capabilities related commands to use set/get macros to manipulate command mailboxes. Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net/mlx5_core: Use hardware registers description header fileEli Cohen2014-10-045-114/+188
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add an auto generated header file that describes hardware registers along with set of macros that set/get values. The macros do static checks to avoid overflow, handle endianess, and overall provide a clean way to code commands. Currently the header file is small and we will add structs as we make use of the macros. A few commands were removed from the commands enum since they are not supported currently and will be added when support is available. Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net/mlx5_core: Update device capabilities handlingEli Cohen2014-10-0412-222/+331
|/ / | | | | | | | | | | | | | | | | | | Rearrange struct mlx5_caps so it has a "gen" field to represent the current capabilities configured for the device. Max capabilities can also be queried from the device. Also update capabilities struct to contain more fields as per the latest revision if firmware specification. Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | qdisc: validate skb without holding lockEric Dumazet2014-10-044-38/+56
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Validation of skb can be pretty expensive : GSO segmentation and/or checksum computations. We can do this without holding qdisc lock, so that other cpus can queue additional packets. Trick is that requeued packets were already validated, so we carry a boolean so that sch_direct_xmit() can validate a fresh skb list, or directly use an old one. Tested on 40Gb NIC (8 TX queues) and 200 concurrent flows, 48 threads host. Turning TSO on or off had no effect on throughput, only few more cpu cycles. Lock contention on qdisc lock disappeared. Same if disabling TX checksum offload. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: ethernet: Remove superfluous ether_setup after alloc_etherdevTobias Klauser2014-10-0419-34/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | There is no need to call ether_setup after alloc_ethdev since it was already called there. Follow commits c706471b2601 ("net: axienet: remove unnecessary ether_setup after alloc_etherdev") and 3c87dcbfb36c ("net: ll_temac: Remove unnecessary ether_setup after alloc_etherdev") and fix the pattern in all remaining ethernet drivers. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge branch 'qdisc_bulk_dequeue'David S. Miller2014-10-032-2/+54
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Jesper Dangaard Brouer says: ==================== qdisc: bulk dequeue support This patchset uses DaveM's recent API changes to dev_hard_start_xmit(), from the qdisc layer, to implement dequeue bulking. Patch01: "qdisc: bulk dequeue support for qdiscs with TCQ_F_ONETXQUEUE" - Implement basic qdisc dequeue bulking - This time, 100% relying on BQL limits, no magic safe-guard constants Patch02: "qdisc: dequeue bulking also pickup GSO/TSO packets" - Extend bulking to bulk several GSO/TSO packets - Seperate patch, as it introduce a small regression, see test section. We do have a patch03, which exports a userspace tunable as a BQL tunable, that can byte-cap or disable the bulking/bursting. But we could not agree on it internally, thus not sending it now. We basically strive to avoid adding any new userspace tunable. Testing patch01: ================ Demonstrating the performance improvement of qdisc dequeue bulking, is tricky because the effect only "kicks-in" once the qdisc system have a backlog. Thus, for a backlog to form, we need either 1) to exceed wirespeed of the link or 2) exceed the capability of the device driver. For practical use-cases, the measureable effect of this will be a reduction in CPU usage 01-TCP_STREAM: -------------- Testing effect for TCP involves disabling TSO and GSO, because TCP already benefit from bulking, via TSO and especially for GSO segmented packets. This patch view TSO/GSO as a seperate kind of bulking, and avoid further bulking of these packet types. The measured perf diff benefit (at 10Gbit/s) for a single netperf TCP_STREAM were 9.24% less CPU used on calls to _raw_spin_lock() (mostly from sch_direct_xmit). If my E5-2695v2(ES) CPU is tuned according to: http://netoptimizer.blogspot.dk/2014/04/basic-tuning-for-network-overload.html Then it is possible that a single netperf TCP_STREAM, with GSO and TSO disabled, can utilize all bandwidth on a 10Gbit/s link. This will then cause a standing backlog queue at the qdisc layer. Trying to pressure the system some more CPU util wise, I'm starting 24x TCP_STREAMs and monitoring the overall CPU utilization. This confirms bulking saves CPU cycles when it "kicks-in". Tool mpstat, while stressing the system with netperf 24x TCP_STREAM, shows: * Disabled bulking: sys:2.58% soft:8.50% idle:88.78% * Enabled bulking: sys:2.43% soft:7.66% idle:89.79% 02-UDP_STREAM ------------- The measured perf diff benefit for UDP_STREAM were 6.41% less CPU used on calls to _raw_spin_lock(). 24x UDP_STREAM with packet size -m 1472 (to avoid sending UDP/IP fragments). 03-trafgen driver test ---------------------- The performance of the 10Gbit/s ixgbe driver is limited due to updating the HW ring-queue tail-pointer on every packet. As previously demonstrated with pktgen. Using trafgen to send RAW frames from userspace (via AF_PACKET), and forcing it through qdisc path (with option --qdisc-path and -t0), sending with 12 CPUs. I can demonstrate this driver layer limitation: * 12.8 Mpps with no qdisc bulking * 14.8 Mpps with qdisc bulking (full 10G-wirespeed) Testing patch02: ================ Testing Bulking several GSO/TSO packets: Measuring HoL (Head-of-Line) blocking for TSO and GSO, with netperf-wrapper. Bulking several TSO show no performance regressions (requeues were in the area 32 requeues/sec for 10G while transmitting approx 813Kpps). Bulking several GSOs does show small regression or very small improvement (requeues were in the area 8000 requeues/sec, for 10G while transmitting approx 813Kpps). Using ixgbe 10Gbit/s with GSO bulking, we can measure some additional latency. Base-case, which is "normal" GSO bulking, sees varying high-prio queue delay between 0.38ms to 0.47ms. Bulking several GSOs together, result in a stable high-prio queue delay of 0.50ms. Corrosponding to: (10000*10^6)*((0.50-0.47)/10^3)/8 = 37500 bytes (10000*10^6)*((0.50-0.38)/10^3)/8 = 150000 bytes 37500/1500 = 25 pkts 150000/1500 = 100 pkts Using igb at 100Mbit/s with GSO bulking, shows an improvement. Base-case sees varying high-prio queue delay between 2.23ms to 2.35ms diff of 0.12ms corrosponding to 1500 bytes at 100Mbit/s. Bulking several GSOs together, result in a stable high-prio queue delay of 2.23ms. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * | qdisc: dequeue bulking also pickup GSO/TSO packetsJesper Dangaard Brouer2014-10-031-9/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The TSO and GSO segmented packets already benefit from bulking on their own. The TSO packets have always taken advantage of the only updating the tailptr once for a large packet. The GSO segmented packets have recently taken advantage of bulking xmit_more API, via merge commit 53fda7f7f9e8 ("Merge branch 'xmit_list'"), specifically via commit 7f2e870f2a4 ("net: Move main gso loop out of dev_hard_start_xmit() into helper.") allowing qdisc requeue of remaining list. And via commit ce93718fb7cd ("net: Don't keep around original SKB when we software segment GSO frames."). This patch allow further bulking of TSO/GSO packets together, when dequeueing from the qdisc. Testing: Measuring HoL (Head-of-Line) blocking for TSO and GSO, with netperf-wrapper. Bulking several TSO show no performance regressions (requeues were in the area 32 requeues/sec). Bulking several GSOs does show small regression or very small improvement (requeues were in the area 8000 requeues/sec). Using ixgbe 10Gbit/s with GSO bulking, we can measure some additional latency. Base-case, which is "normal" GSO bulking, sees varying high-prio queue delay between 0.38ms to 0.47ms. Bulking several GSOs together, result in a stable high-prio queue delay of 0.50ms. Using igb at 100Mbit/s with GSO bulking, shows an improvement. Base-case sees varying high-prio queue delay between 2.23ms to 2.35ms Signed-off-by: David S. Miller <davem@davemloft.net>
| * | qdisc: bulk dequeue support for qdiscs with TCQ_F_ONETXQUEUEJesper Dangaard Brouer2014-10-032-2/+60
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Based on DaveM's recent API work on dev_hard_start_xmit(), that allows sending/processing an entire skb list. This patch implements qdisc bulk dequeue, by allowing multiple packets to be dequeued in dequeue_skb(). The optimization principle for this is two fold, (1) to amortize locking cost and (2) avoid expensive tailptr update for notifying HW. (1) Several packets are dequeued while holding the qdisc root_lock, amortizing locking cost over several packet. The dequeued SKB list is processed under the TXQ lock in dev_hard_start_xmit(), thus also amortizing the cost of the TXQ lock. (2) Further more, dev_hard_start_xmit() will utilize the skb->xmit_more API to delay HW tailptr update, which also reduces the cost per packet. One restriction of the new API is that every SKB must belong to the same TXQ. This patch takes the easy way out, by restricting bulk dequeue to qdisc's with the TCQ_F_ONETXQUEUE flag, that specifies the qdisc only have attached a single TXQ. Some detail about the flow; dev_hard_start_xmit() will process the skb list, and transmit packets individually towards the driver (see xmit_one()). In case the driver stops midway in the list, the remaining skb list is returned by dev_hard_start_xmit(). In sch_direct_xmit() this returned list is requeued by dev_requeue_skb(). To avoid overshooting the HW limits, which results in requeuing, the patch limits the amount of bytes dequeued, based on the drivers BQL limits. In-effect bulking will only happen for BQL enabled drivers. Small amounts for extra HoL blocking (2x MTU/0.24ms) were measured at 100Mbit/s, with bulking 8 packets, but the oscillating nature of the measurement indicate something, like sched latency might be causing this effect. More comparisons show, that this oscillation goes away occationally. Thus, we disregard this artifact completely and remove any "magic" bulking limit. For now, as a conservative approach, stop bulking when seeing TSO and segmented GSO packets. They already benefit from bulking on their own. A followup patch add this, to allow easier bisect-ability for finding regressions. Jointed work with Hannes, Daniel and Florian. Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* | et131x: Add PCIe gigabit ethernet driver et131x to drivers/netMark Einon2014-10-039-8/+5597
| | | | | | | | | | | | | | | | | | | | | | | | This adds the ethernet driver for Agere et131x devices to drivers/net/ethernet. The driver being added has been in the staging tree for some time, and will be removed from there in a seperate patch. This one merely disables the staging version to prevent two instances being built. Signed-off-by: Mark Einon <mark.einon@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2014-10-02129-951/+1540
|\ \ | |/ |/| | | | | | | | | | | | | | | Conflicts: drivers/net/usb/r8152.c net/netfilter/nfnetlink.c Both r8152 and nfnetlink conflicts were simple overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net>
| * Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds2014-10-0231-134/+217
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking fixes from David Miller: 1) Don't halt the firmware in r8152 driver, from Hayes Wang. 2) Handle full sized 802.1ad frames in bnx2 and tg3 drivers properly, from Vlad Yasevich. 3) Don't sleep while holding tx_clean_lock in netxen driver, fix from Manish Chopra. 4) Certain kinds of ipv6 routes can end up endlessly failing the route validation test, causing it to be re-looked up over and over again. This particularly kills input route caching in TCP sockets. Fix from Hannes Frederic Sowa. 5) netvsc_start_xmit() has a use-after-free access to skb->len, fix from K Y Srinivasan. 6) Fix matching of inverted containers in ematch module, from Ignacy Gawędzki. 7) Aggregation of GRO frames via SKB ->frag_list for linear skbs isn't handled properly, regression fix from Eric Dumazet. 8) Don't test return value of ipv4_neigh_lookup(), which returns an error pointer, against NULL. From WANG Cong. 9) Fix an old regression where we mistakenly allow a double add of the same tunnel. Fixes from Steffen Klassert. 10) macvtap device delete and open can run in parallel and corrupt lists etc., fix from Vlad Yasevich. 11) Fix build error with IPV6=m NETFILTER_XT_TARGET_TPROXY=y, from Pablo Neira Ayuso. 12) rhashtable_destroy() triggers lockdep splats, fix also from Pablo. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (32 commits) bna: Update Maintainer Email r8152: disable power cut for RTL8153 r8152: remove clearing bp bnx2: Correctly receive full sized 802.1ad fragmes tg3: Allow for recieve of full-size 8021AD frames r8152: fix setting RTL8152_UNPLUG netxen: Fix bug in Tx completion path. netxen: Fix BUG "sleeping function called from invalid context" ipv6: remove rt6i_genid hyperv: Fix a bug in netvsc_start_xmit() net: stmmac: fix stmmac_pci_probe failed when CONFIG_HAVE_CLK is selected ematch: Fix matching of inverted containers. gro: fix aggregation for skb using frag_list neigh: check error pointer instead of NULL for ipv4_neigh_lookup() ip6_gre: Return an error when adding an existing tunnel. ip6_vti: Return an error when adding an existing tunnel. ip6_tunnel: Return an error when adding an existing tunnel. ip6gre: add a rtnl link alias for ip6gretap net/mlx4_core: Allow not to specify probe_vf in SRIOV IB mode r8152: fix the carrier off when autoresuming ...
| | * bna: Update Maintainer EmailRasesh Mody2014-10-021-1/+1
| | | | | | | | | | | | | | | | | | | | | Update the maintainer email for BNA driver. Signed-off-by: Rasesh Mody <rasesh.mody@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * Merge branch 'r8152'David S. Miller2014-10-011-28/+2
| | |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hayes Wang says: ==================== r8152: patches about firmware The patches fix the issues when the firmware exists. For the multiple OS, the firmware may be loaded by the driver of the other OS. And the Linux driver has influences on it. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 15:00:29 +0100