- 17 Nov, 2016 1 commit
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Michael Chan authored
Use the new FORCE_LINK_DWN bit to shutdown link during close. Signed-off-by:
Michael Chan <michael.chan@broadcom.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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- 16 Nov, 2016 39 commits
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Eric Dumazet authored
Callers of netpoll_poll_lock() own NAPI_STATE_SCHED Callers of netpoll_poll_unlock() have BH blocked between the NAPI_STATE_SCHED being cleared and poll_lock is released. We can avoid the spinlock which has no contention, and use cmpxchg() on poll_owner which we need to set anyway. This removes a possible lockdep violation after the cited commit, since sk_busy_loop() re-enables BH before calling busy_poll_stop() Fixes: 217f6974 ("net: busy-poll: allow preemption in sk_busy_loop()") Signed-off-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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Rafal Ozieblo authored
New Cadence GEM hardware support Large Segment Offload (LSO): TCP segmentation offload (TSO) as well as UDP fragmentation offload (UFO). Support for those features was added to the driver. Signed-off-by: -
Arnd Bergmann authored
The netdev->real_num_rx_queues setting is only available if CONFIG_SYSFS is enabled, so we now get a build failure when that is turned off: netronome/nfp/nfp_net_common.c: In function 'nfp_net_ring_swap_enable': netronome/nfp/nfp_net_common.c:2489:18: error: 'struct net_device' has no member named 'real_num_rx_queues'; did you mean 'real_num_tx_queues'? As far as I can tell, the check here is only used as an optimization that we can skip in order to fix the compilation. If sysfs is disabled, the following netif_set_real_num_rx_queues() has no effect. Fixes: 164d1e9e ("nfp: add support for ethtool .set_channels") Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Acked-by:
Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by:
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Eric Dumazet authored
Calling napi_hash_del() after netif_napi_del() is pointless. Signed-off-by:
Bert Kenward <bkenward@solarflare.com> Signed-off-by:
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David Lebrun authored
This patch changes the lwtunnel_headroom() function which is called in ipv4_mtu() and ip6_mtu(), to also return the correct headroom value when the lwtunnel state is OUTPUT_REDIRECT. This patch enables e.g. SR-IPv6 encapsulations to work without manually setting the route mtu. Acked-by:
Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by:
David Lebrun <david.lebrun@uclouvain.be> Signed-off-by:
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Ido Schimmel authored
The recent merge commit bb598c1b ("Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net") would cause the FIB abort warning to fire whenever we flush the FIB tables - either during module removal or actual abort. Move it back to its rightful location in the FIB abort function. Signed-off-by:
Ido Schimmel <idosch@mellanox.com> Signed-off-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
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Andrew Lunn authored
The SPEED_UNFORCED indicates the MAC & PHY should perform auto-negotiation to determine a speed which works. If this is called for, don't set the force bit. If it is set, the MAC actually does 10Gbps, why the internal PHYs don't support. Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
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David S. Miller authored
Tom Lendacky says: ==================== amd-xgbe: AMD XGBE driver updates 2016-11-15 This patch series addresses some minor issues found in the recently accepted patch series for the AMD XGBE driver. The following fixes are included in this driver update series: - Fix a possibly uninitialized variable in the debugfs support - Fix the GPIO pin number constraint check This patch series is based on net-next. ==================== Signed-off-by: -
Lendacky, Thomas authored
The GPIO support in the hardware allows for up to 16 GPIO pins, enumerated from 0 to 15. The driver uses the wrong value (16) to validate the GPIO pin range in the routines to set and clear the GPIO output pins. Update the code to use the correct value (15). Reported-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by:
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Lendacky, Thomas authored
The debugfs support in the driver uses a common routine to write the debugfs values. In this routine, if the input file position is non-zero then the write routine will not return an error and an output parameter will not have been set. Because an error isn't returned an uninitialized value will be written into a register. Fix the common write routine to return an error if the input file position is non-zero, which will propagate back to the caller. Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
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David S. Miller authored
Florian Fainelli says: ==================== net: Implenent ethtool::nway_reset for a few drivers This patch series depends on "net: phy: Centralize auto-negotation restart" since it provides phy_ethtool_nway_reset as a helper function. The drivers here already support PHYLIB, so there really is no reason why restarting auto-negotiation would not be possible with these. ==================== Signed-off-by: -
Florian Fainelli authored
Implement ethtool::nway_reset using phy_ethtool_nway_reset. We are already using dev->phydev all over the place so this comes for free. Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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Florian Fainelli authored
Implement ethtool::nway_reset using phy_ethtool_nway_reset. We are already using dev->phydev all over the place so this comes for free. Signed-off-by:
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Florian Fainelli authored
Implement ethtool::nway_reset using phy_ethtool_nway_reset. We are already using dev->phydev all over the place so this comes for free. Signed-off-by:
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Florian Fainelli authored
Implement ethtool::nway_reset using phy_ethtool_nway_reset. We are already using dev->phydev all over the place so this comes for free. Signed-off-by:
Tobias Klauser <tklauser@distanz.ch> Signed-off-by:
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Florian Fainelli authored
Utilize the generic phy_ethtool_nway_reset() helper function to implement an autonegotiation restart. Signed-off-by:
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David S. Miller authored
Eric Dumazet says: ==================== net: busy-poll: allow preemption and other optimizations It is time to have preemption points in sk_busy_loop() and improve its scalability. Also napi_complete() and friends can tell drivers when it is safe to not re-enable device interrupts, saving some overhead under high busy polling. mlx4 and bnx2x are changed accordingly, to show how this busy polling status can be exploited by drivers. Next steps will implement Zach Brown suggestion, where NAPI polling would be enabled all the time for some chosen queues. This is needed for efficient epoll() support anyway. ==================== Signed-off-by: -
Eric Dumazet authored
Switch from napi_complete() to napi_complete_done() for better GRO support (gro_flush_timeout) and core NAPI features. Do not rearm interrupts if we are busy polling, to reduce bus and interrupts overhead. Signed-off-by:
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Eric Dumazet authored
Do not rearm interrupts if we are busy polling. mlx4 uses separate CQ for TX and RX, so number of TX interrupts does not change, unfortunately. Signed-off-by:
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Eric Dumazet authored
NAPI drivers use napi_complete_done() or napi_complete() when they drained RX ring and right before re-enabling device interrupts. In busy polling, we can avoid interrupts being delivered since we are polling RX ring in a controlled loop. Drivers can chose to use napi_complete_done() return value to reduce interrupts overhead while busy polling is active. This is optional, legacy drivers should work fine even if not updated. Signed-off-by:
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Eric Dumazet authored
Now sk_busy_loop() can schedule by itself, we can remove need_resched() check from sk_can_busy_loop() Also add a const to its struct sock parameter. Signed-off-by:
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Eric Dumazet authored
After commit 4cd13c21 ("softirq: Let ksoftirqd do its job"), sk_busy_loop() needs a bit of care : softirqs might be delayed since we do not allow preemption yet. This patch adds preemptiom points in sk_busy_loop(), and makes sure no unnecessary cache line dirtying or atomic operations are done while looping. A new flag is added into napi->state : NAPI_STATE_IN_BUSY_POLL This prevents napi_complete_done() from clearing NAPIF_STATE_SCHED, so that sk_busy_loop() does not have to grab it again. Similarly, netpoll_poll_lock() is done one time. This gives about 10 to 20 % improvement in various busy polling tests, especially when many threads are busy polling in configurations with large number of NIC queues. This should allow experimenting with bigger delays without hurting overall latencies. Tested: On a 40Gb mlx4 NIC, 32 RX/TX queues. echo 70 >/proc/sys/net/core/busy_read for i in `seq 1 40`; do echo -n $i: ; ./super_netperf $i -H lpaa24 -t UDP_RR -- -N -n; done Before: After: 1: 90072 92819 2: 157289 184007 3: 235772 213504 4: 344074 357513 5: 394755 458267 6: 461151 487819 7: 549116 625963 8: 544423 716219 9: 720460 738446 10: 794686 837612 11: 915998 923960 12: 937507 925107 13: 1019677 971506 14: 1046831 1113650 15: 1114154 1148902 16: 1105221 1179263 17: 1266552 1299585 18: 1258454 1383817 19: 1341453 1312194 20: 1363557 1488487 21: 1387979 1501004 22: 1417552 1601683 23: 1550049 1642002 24: 1568876 1601915 25: 1560239 1683607 26: 1640207 1745211 27: 1706540 1723574 28: 1638518 1722036 29: 1734309 1757447 30: 1782007 1855436 31: 1724806 1888539 32: 1717716 1944297 33: 1778716 1869118 34: 1805738 1983466 35: 1815694 2020758 36: 1893059 2035632 37: 1843406 2034653 38: 1888830 2086580 39: 1972827 2143567 40: 1877729 2181851 Signed-off-by:
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Martin KaFai Lau authored
gcc-6.2.1 gives the following warning: kernel/bpf/bpf_lru_list.c: In function ‘__bpf_lru_list_rotate_inactive.isra.3’: kernel/bpf/bpf_lru_list.c:201:28: warning: ‘next’ may be used uninitialized in this function [-Wmaybe-uninitialized] The "next" is currently initialized in the while() loop which must have >=1 iterations. This patch initializes next to get rid of the compiler warning. Fixes: 3a08c2fd ("bpf: LRU List") Reported-by:
Martin KaFai Lau <kafai@fb.com> Acked-by:
Alexei Starovoitov <ast@kernel.org> Signed-off-by:
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David Lebrun authored
This patch adds a new option CONFIG_IPV6_SEG6_LWTUNNEL to enable/disable support of encapsulation with the lightweight tunnels. When this option is enabled, CONFIG_LWTUNNEL is automatically selected. Fix commit 6c8702c6 ("ipv6: sr: add support for SRH encapsulation and injection with lwtunnels") Without a proper option to control lwtunnel support for SR-IPv6, if CONFIG_LWTUNNEL=n then the IPv6 initialization fails as a consequence of seg6_iptunnel_init() failure with EOPNOTSUPP: NET: Registered protocol family 10 IPv6: Attempt to unregister permanent protocol 6 IPv6: Attempt to unregister permanent protocol 136 IPv6: Attempt to unregister permanent protocol 17 NET: Unregistered protocol family 10 Tested (compiling, booting, and loading ipv6 module when relevant) with possible combinations of CONFIG_IPV6={y,m,n}, CONFIG_IPV6_SEG6_LWTUNNEL={y,n} and CONFIG_LWTUNNEL={y,n}. Reported-by:
Lorenzo Colitti <lorenzo@google.com> Suggested-by:
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David S. Miller authored
Tobias Regnery says: ==================== alx: add multi queue support This patchset lays the groundwork for multi queue support in the alx driver and enables multi queue support for the tx path by default. The hardware supports up to 4 tx queues. Benefits are better utilization of multi core cpus and the usage of the msi-x support by default which splits the handling of rx / tx and misc other interrupts. The rx path is a little bit harder because apparently (based on the limited information from the downstream driver) the hardware supports up to 8 rss queues but only has one hardware descriptor ring on the rx side. So the rx path will be part of another patchset. Tested on my AR8161 ethernet adapter with different tests: - there are no regressions observed during my daily usage - iperf tcp and udp tests shows no performance regressions - netperf TCP_RR and UDP_RR shows a slight performance increase of about 1-2% with this patchset applied This work is based on the downstream driver at github.com/qca/alx Changes in V2: - drop unneeded casts in alx_alloc_rx_ring (Patch 1) - add additional information about testing and benefit to the changelog ==================== Signed-off-by: -
Tobias Regnery authored
Enable multiple tx queues by default based on the number of online cpus. The hardware supports up to four tx queues. Based on the downstream driver at github.com/qca/alx Signed-off-by:
Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by:
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Tobias Regnery authored
Remove the module parameter to enable msi-x support and enable msi-x interrupts unconditionally by default. This is a preparatory step to enable multi queue support by default, because this is only working with msi-x interrupts. Signed-off-by:
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Tobias Regnery authored
This patch prepares the tx path to send data on multiple tx queues. It introduces per queue register adresses and uses them in the alx_tx_queue structs. There are new helper functions for the queue mapping in the tx path. Based on the downstream driver at github.com/qca/alx Signed-off-by:
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Tobias Regnery authored
Allocate, initialise and free alx_tx_queue structs based on the number of alx_napi structures. Also increase the size of the descriptor memory based on the number of tx queues in use. Based on the downstream driver at github.com/qca/alx Signed-off-by:
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Tobias Regnery authored
Extend the interrupt bringup code and the interrupt handler for msi-x interrupts in order to handle multiple queues. We must change the poll function because with multiple queues it is possible that an alx_napi structure has only a tx or only a rx queue pointer. Based on the downstream driver at github.com/qca/alx Signed-off-by:
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Tobias Regnery authored
Remove the tx and rx queue structures from the alx_priv structure and switch everything over to the queue pointers in the alx_napi structure. Based on the downstream driver at github.com/qca/alx Signed-off-by:
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Tobias Regnery authored
Add new functions to allocate and free the alx_napi structures and use them in __alx_open and __alx_stop. We only allocate one of these structures for now, as the rest of the driver is not yet ready for multiple queues. We switch over the setup of the interrupt mask and the call to netif_napi_add to the new function because we must adjust these later on a per queue basis. Based on the downstream driver at github.com/qca/alx Signed-off-by:
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Tobias Regnery authored
Extend the driver data structures to be able to handle multiple queues. Based on the downstream driver at github.com/qca/alx Signed-off-by:
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Tobias Regnery authored
Split the allocation of descriptor memory and the buffer allocation into a tx and rx function. This is in preparation for multiple queues where we need to iterate over the new functions. While at it drop the unneeded casting on the rx side. Signed-off-by:
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David S. Miller authored
Madalin Bucur says: ==================== dpaa_eth: Add the QorIQ DPAA Ethernet driver This patch series adds the Ethernet driver for the Freescale QorIQ Data Path Acceleration Architecture (DPAA). This version includes changes following the feedback received on previous versions from Eric Dumazet, Bob Cochran, Joe Perches, Paul Bolle, Joakim Tjernlund, Scott Wood, David Miller - thank you. Together with the driver a managed version of alloc_percpu is provided that simplifies the release of per-CPU memory. The Freescale DPAA architecture consists in a series of hardware blocks that support the Ethernet connectivity. The Ethernet driver depends upon the following drivers that are currently in the Linux kernel: - Peripheral Access Memory Unit (PAMU) drivers/iommu/fsl_* - Frame Manager (FMan) added in v4.4 drivers/net/ethernet/freescale/fman - Queue Manager (QMan), Buffer Manager (BMan) added in v4.9-rc1 drivers/soc/fsl/qbman dpaa_eth interfaces mapping to FMan MACs: dpaa_eth /eth0\ ... /ethN\ driver | | | | ------------- ---- ----------- ---- ------------- -Ports / Tx Rx \ ... / Tx Rx \ FMan | | | | -MACs | MAC0 | | MACN | / dtsec0 \ ... / dtsecN \ (or tgec) / \ / \(or memac) --------- -------------- --- -------------- --------- FMan, FMan Port, FMan SP, FMan MURAM drivers --------------------------------------------------------- FMan HW blocks: MURAM, MACs, Ports, SP --------------------------------------------------------- dpaa_eth relation to QMan, FMan: ________________________________ dpaa_eth / eth0 \ driver / \ --------- -^- -^- -^- --- --------- QMan driver / \ / \ / \ \ / | BMan | |Rx | |Rx | |Tx | |Tx | | driver | --------- |Dfl| |Err| |Cnf| |FQs| | | QMan HW |FQ | |FQ | |FQ | | | | | / \ / \ / \ \ / | | --------- --- --- --- -v- --------- | FMan QMI | | | FMan HW FMan BMI | BMan HW | ----------------------- -------- where the acronyms used above (and in the code) are: DPAA = Data Path Acceleration Architecture FMan = DPAA Frame Manager QMan = DPAA Queue Manager BMan = DPAA Buffers Manager QMI = QMan interface in FMan BMI = BMan interface in FMan FMan SP = FMan Storage Profiles MURAM = Multi-user RAM in FMan FQ = QMan Frame Queue Rx Dfl FQ = default reception FQ Rx Err FQ = Rx error frames FQ Tx Cnf FQ = Tx confirmation FQ Tx FQs = transmission frame queues dtsec = datapath three speed Ethernet controller (10/100/1000 Mbps) tgec = ten gigabit Ethernet controller (10 Gbps) memac = multirate Ethernet MAC (10/100/1000/10000) Changes from v7: - remove the debug option to use a common buffer pool for all the interfaces Changed from v6: - fixed an issue on an error path in dpaa_set_mac_address() - removed NDO operation definitions that were not needed - sorted the local variable declarations - cleaned up a few checkpatch checks - removed friendly network interface naming code Changes from v5: - adapt to the latest Q/BMan drivers API - use build_skb() on Rx path instead of buffer pool refill path - proper support for multiple buffer pools - align function, variable names, code cleanup - driver file structure cleanup Changes from v4: - addressed feedback from Scott Wood and Joe Perches - fixed spelling - fixed leak of uninitialized stack to userspace - fix prints - replace raw_cpu_ptr() with this_cpu_ptr() - remove _s from the end of structure names - remove underscores at start of functions, goto labels - remove likely in error paths - use container_of() instead of open casts - remove priv from the driver name - move return type on same line with function name - drop DPA_READ_SKB_PTR/DPA_WRITE_SKB_PTR Changes from v3: - removed bogus delay and comment in .ndo_stop implementation - addressed minor issues reported by David Miller Changes from v2: - removed debugfs, moved exports to ethtool statistics - removed congestion groups Kconfig params Changes from v1: - bpool level Kconfig options removed - print format using pr_fmt, cleaned up prints - __hot/__cold removed - gratuitous unlikely() removed - code style aligned, consistent spacing for declarations - comment formatting ==================== Signed-off-by: -
Madalin Bucur authored
Signed-off-by:
Madalin Bucur <madalin.bucur@nxp.com> Signed-off-by:
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Madalin Bucur authored
Signed-off-by:
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Madalin Bucur authored
Signed-off-by:
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Madalin Bucur authored
Add trace points on the hot processing path. Signed-off-by:
Ruxandra Ioana Radulescu <ruxandra.radulescu@nxp.com> Signed-off-by:
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