- 10 Jan, 2018 29 commits
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Alice Michael authored
Display some more stats that were already being counted, to help users understand when priority xon/xoff packets are being sent/received Signed-off-by:
Alice Michael <alice.michael@intel.com> Tested-by:
Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Jesper Dangaard Brouer authored
The commit e817f856 ("xdp: generic XDP handling of xdp_rxq_info") removed some ifdef CONFIG_SYSFS in net/core/dev.c, but forgot to remove the corresponding ifdef's in include/linux/netdevice.h. Fixes: e817f856 ("xdp: generic XDP handling of xdp_rxq_info") Reported-by:
Guenter Roeck <linux@roeck-us.net> Signed-off-by:
Jesper Dangaard Brouer <brouer@redhat.com> Tested-by:
David S. Miller <davem@davemloft.net>
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Andrew Lunn authored
The internal PHYs in the mv88e6390 switch have a temperature sensor. It uses a different register layout to other PHY currently supported. It also has an errata, in that some reads of the sensor result in bad values. So a number of reads need to be made, and the average taken. Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Reviewed-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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David S. Miller authored
Andy Gospodarek says: ==================== net: create dynamic software irq moderation library This converts the dynamic interrupt moderation library from the mlx5e driver into a library so it can be used by any driver. The penultimate patch in this set adds support for this new dynamic interrupt moderation library in the bnxt_en driver and the last patch creates an entry in the MAINTAINERS file for this library. The main purpose of this code is to allow an administrator to make sure that default coalesce settings are optimized for low latency, but quickly adapt to handle high throughput/bulk traffic by altering how much time passes before popping an interrupt. For any new driver the following changes would be needed to use this library: - add elements in ring struct to track items needed by this library - create function that can be called to actually set coalesce settings for the driver Credit to Rob Rice and Lee Reed for doing some of the initial proof of concept and testing for this patch and Tal Gilboa and Or Gerlitz for their comments, etc on this set. v4: Fix build breakage for VF representers noticed by kbuild test robot. Thanks for being so courteous, kbuild test robot! v3: bnxt_en fix from Michael Chan, comment suggestion from Vasundhara Volam, and small mlx5e header file fix from Tal Gilboa. v2: Spelling fixes from Stephen Hemminger, bnxt_en suggestions from Michael Chan, spelling and formatting fixes from Or Gerlitz, and spelling and mlx5e changes suggested by Tal Gilboa. ==================== Signed-off-by: -
Andy Gospodarek authored
Signed-off-by:
Andy Gospodarek <gospo@broadcom.com> Signed-off-by:
Tal Gilboa <talgi@mellanox.com> Acked-by:
Saeed Mahameed <saeedm@mellanox.com> Signed-off-by:
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Andy Gospodarek authored
This implements the changes needed for the bnxt_en driver to add support for dynamic interrupt moderation per ring. This does add additional counters in the receive path, but testing shows that any additional instructions are offset by throughput gain when the default configuration is for low latency. Signed-off-by:
Michael Chan <michael.chan@broadcom.com> Signed-off-by:
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Andy Gospodarek authored
Simplify the arguments net_dim() by formatting them into a struct net_dim_sample before calling the function. Signed-off-by:
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Andy Gospodarek authored
This move allows drivers to add private structure elements to track the number of packets, bytes, and interrupts events per ring. A driver also defines a workqueue handler to act on this collected data once per poll and modify the coalescing parameters per ring. Signed-off-by:
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Andy Gospodarek authored
Change all appropriate mlx5_am* and MLX5_AM* references to net_dim and NET_DIM, respectively, in code that handles dynamic interrupt moderation. Also change all references from 'am' to 'dim' when used as local variables and add generic profile references. Signed-off-by:
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Andy Gospodarek authored
These functions were identified as ones that could be made generic and used by multiple drivers. Most of the contents of en_rx_am.c are moved to net_dim.c. Signed-off-by:
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Andy Gospodarek authored
More movement to help make this code more generic. Signed-off-by:
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Andy Gospodarek authored
This makes mlx5e_am_sample more generic so that it can be called easily from a driver that does not use the same data structure to store these values in a single structure. Signed-off-by:
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Andy Gospodarek authored
Move these to newly created file to prepare to move these functions to a library. Signed-off-by:
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Andy Gospodarek authored
Create new header file to prepare to move code that handles irq moderation to a library that lives in a header file. Signed-off-by:
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David S. Miller authored
Ido Schimmel says: ==================== ipv6: Add support for non-equal-cost multipath This set aims to add support for IPv6 non-equal-cost multipath routes. The first three patches convert multipath selection to use the hash-threshold method (RFC 2992) instead of modulo-N. The same method is employed by the IPv4 routing code since commit 0e884c78 ("ipv4: L3 hash-based multipath"). Unlike modulo-N, with hash-threshold only the flows near the region boundaries are affected when a nexthop is added or removed. In addition, it allows us to easily add support for non-equal-cost multipath in the last patch by sizing the different regions according to the provided weights. ==================== Signed-off-by:
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Ido Schimmel authored
The use of hash-threshold instead of modulo-N makes it trivial to add support for non-equal-cost multipath. Instead of dividing the multipath hash function's output space equally between the nexthops, each nexthop is assigned a region size which is proportional to its weight. Signed-off-by:
Ido Schimmel <idosch@mellanox.com> Acked-by:
David Ahern <dsahern@gmail.com> Signed-off-by:
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Ido Schimmel authored
Now that each nexthop stores its region boundary in the multipath hash function's output space, we can use hash-threshold instead of modulo-N in multipath selection. This reduces the number of checks we need to perform during lookup, as dead and linkdown nexthops are assigned a negative region boundary. In addition, in contrast to modulo-N, only flows near region boundaries are affected when a nexthop is added or removed. Signed-off-by:
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Ido Schimmel authored
The hash thresholds assigned to IPv6 nexthops are in the range of [-1, 2^31 - 1], where a negative value is assigned to nexthops that should not be considered during multipath selection. Therefore, in a similar fashion to IPv4, we need to use the upper 31-bits of the multipath hash for multipath selection. Signed-off-by:
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Ido Schimmel authored
Before we convert IPv6 to use hash-threshold instead of modulo-N, we first need each nexthop to store its region boundary in the hash function's output space. The boundary is calculated by dividing the output space equally between the different active nexthops. That is, nexthops that are not dead or linkdown. The boundaries are rebalanced whenever a nexthop is added or removed to a multipath route and whenever a nexthop becomes active or inactive. Signed-off-by:
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Jason Wang authored
This patch tries to batched used ring update during RX. This is pretty fit for the case when guest is much faster (e.g dpdk based backend). In this case, used ring is almost empty: - we may get serious cache line misses/contending on both used ring and used idx. - at most 1 packet could be dequeued at one time, batching in guest does not make much effect. Update used ring in a batch can help since guest won't access the used ring until used idx was advanced for several descriptors and since we advance used ring for every N packets, guest will only need to access used idx for every N packet since it can cache the used idx. To have a better interaction for both batch dequeuing and dpdk batching, VHOST_RX_BATCH was used as the maximum number of descriptors that could be batched. Test were done between two machines with 2.40GHz Intel(R) Xeon(R) CPU E5-2630 connected back to back through ixgbe. Traffic were generated on one remote ixgbe through MoonGen and measure the RX pps through testpmd in guest when do xdp_redirect_map from local ixgbe to tap. RX pps were increased from 3.05 Mpps to 4.00 Mpps (about 31% improvement). One possible concern for this is the implications for TCP (especially latency sensitive workload). Result[1] does not show obvious changes for most of the netperf test (RR, TX, and RX). And we do get some improvements for RX on some specific size. Guest RX: size/sessions/+thu%/+normalize% 64/ 1/ +2%/ +2% 64/ 2/ +2%/ -1% 64/ 4/ +1%/ +1% 64/ 8/ 0%/ 0% 256/ 1/ +6%/ -3% 256/ 2/ -3%/ +2% 256/ 4/ +11%/ +11% 256/ 8/ 0%/ 0% 512/ 1/ +4%/ 0% 512/ 2/ +2%/ +2% 512/ 4/ 0%/ -1% 512/ 8/ -8%/ -8% 1024/ 1/ -7%/ -17% 1024/ 2/ -8%/ -7% 1024/ 4/ +1%/ 0% 1024/ 8/ 0%/ 0% 2048/ 1/ +30%/ +14% 2048/ 2/ +46%/ +40% 2048/ 4/ 0%/ 0% 2048/ 8/ 0%/ 0% 4096/ 1/ +23%/ +22% 4096/ 2/ +26%/ +23% 4096/ 4/ 0%/ +1% 4096/ 8/ 0%/ 0% 16384/ 1/ -2%/ -3% 16384/ 2/ +1%/ -4% 16384/ 4/ -1%/ -3% 16384/ 8/ 0%/ -1% 65535/ 1/ +15%/ +7% 65535/ 2/ +4%/ +7% 65535/ 4/ 0%/ +1% 65535/ 8/ 0%/ 0% TCP_RR: size/sessions/+thu%/+normalize% 1/ 1/ 0%/ +1% 1/ 25/ +2%/ +1% 1/ 50/ +4%/ +1% 64/ 1/ 0%/ -4% 64/ 25/ +2%/ +1% 64/ 50/ 0%/ -1% 256/ 1/ 0%/ 0% 256/ 25/ 0%/ 0% 256/ 50/ +4%/ +2% Guest TX: size/sessions/+thu%/+normalize% 64/ 1/ +4%/ -2% 64/ 2/ -6%/ -5% 64/ 4/ +3%/ +6% 64/ 8/ 0%/ +3% 256/ 1/ +15%/ +16% 256/ 2/ +11%/ +12% 256/ 4/ +1%/ 0% 256/ 8/ +5%/ +5% 512/ 1/ -1%/ -6% 512/ 2/ 0%/ -8% 512/ 4/ -2%/ +4% 512/ 8/ +6%/ +9% 1024/ 1/ +3%/ +1% 1024/ 2/ +3%/ +9% 1024/ 4/ 0%/ +7% 1024/ 8/ 0%/ +7% 2048/ 1/ +8%/ +2% 2048/ 2/ +3%/ -1% 2048/ 4/ -1%/ +11% 2048/ 8/ +3%/ +9% 4096/ 1/ +8%/ +8% 4096/ 2/ 0%/ -7% 4096/ 4/ +4%/ +4% 4096/ 8/ +2%/ +5% 16384/ 1/ -3%/ +1% 16384/ 2/ -1%/ -12% 16384/ 4/ -1%/ +5% 16384/ 8/ 0%/ +1% 65535/ 1/ 0%/ -3% 65535/ 2/ +5%/ +16% 65535/ 4/ +1%/ +2% 65535/ 8/ +1%/ -1% Signed-off-by:Jason Wang <jasowang@redhat.com> Acked-by:
Michael S. Tsirkin <mst@redhat.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linuxDavid S. Miller authored
mlx5-updates-2018-01-08 Four patches from Or that add Hairpin support to mlx5: =========================================================== From: Or Gerlitz <ogerlitz@mellanox.com> We refer the ability of NIC HW to fwd packet received on one port to the other port (also from a port to itself) as hairpin. The application API is based on ingress tc/flower rules set on the NIC with the mirred redirect action. Other actions can apply to packets during the redirect. Hairpin allows to offload the data-path of various SW DDoS gateways, load-balancers, etc to HW. Packets go through all the required processing in HW (header re-write, encap/decap, push/pop vlan) and then forwarded, CPU stays at practically zero usage. HW Flow counters are used by the control plane for monitoring and accounting. Hairpin is implemented by pairing a receive queue (RQ) to send queue (SQ). All the flows that share <recv NIC, mirred NIC> are redirected through the same hairpin pair. Currently, only header-rewrite is supported as a packet modification action. I'd like to thanks Elijah Shakkour <elijahs@mellanox.com> for implementing this functionality on HW simulator, before it was avail in the FW so the driver code could be tested early. =========================================================== From Feras three patches that provide very small changes that allow IPoIB to support RX timestamping for child interfaces, simply by hooking the mlx5e timestamping PTP ioctl to IPoIB child interface netdev profile. One patch from Gal to fix a spilling mistake. Two patches from Eugenia adds drop counters to VF statistics to be reported as part of VF statistics in netlink (iproute2) and implemented them in mlx5 eswitch. Signed-off-by: -
David S. Miller authored
Peng Li says: ==================== code improvements in HNS3 driver This patchset fixes 2 comments for community review. [patch 1/2] reverts "net: hns3: Add packet statistics of netdev" reported by Jakub Kicinski and David Miller. [patch 2/2] reports the function type the same line with hns3_nic_get_stats64, reported by Andrew Lunn. ==================== Signed-off-by: -
Peng Li authored
The function type should be on the same line with the function name, or it may cause display error if a patch edit the function. There is am example following: https://www.spinics.net/lists/netdev/msg476141.htmlSigned-off-by:
Peng Li <lipeng321@huawei.com> Signed-off-by:
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Peng Li authored
This reverts commit 84910007. It is duplicate to add statistics of netdev for ethtool -S. Signed-off-by:
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David S. Miller authored
Jassi Brar says: ==================== Socionext Synquacer NETSEC driver Changes since v5 # Removed helper macros # Removed 'inline' qualifier # Changed multiline empty comment to single line # Added 'clock-names' property in DT binding example # Ignore 'clock-names' property in driver until f/ws in the wild are upgraded or we support instance that take in more than one clock. # Rebased the patchset onto net-next Changes since v4 # Fixed ucode indexing as a word, instead of byte # Removed redundant clocks, keep only phy rate reference clock and expect it to be 'phy_ref_clk' Changes since v3 # Discard 'socionext,snq-mdio', and simply use 'mdio' subnode. # Use ioremap on ucode region as well, instead of memremap. Changes since v2 # Use 'mdio' subnode in DT bindings. # Use phy_interface_mode_is_rgmii(), instead of open coding the check. # Use readl/b with eeprom_base pointer. # Unregister mdio bus upon failure in probe. Changes since v1 # Switched from using memremap to ioremap # Implemented ndo_do_ioctl callback # Defined optional 'dma-coherent' DT property ==================== Signed-off-by: -
Jassi Brar authored
Add entry for the Socionext Netsec controller driver and DT bindings. Acked-by:
Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by:
Jassi Brar <jaswinder.singh@linaro.org> Signed-off-by:
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Jassi Brar authored
This driver adds support for Socionext "netsec" IP Gigabit Ethernet + PHY IP used in the Synquacer SC2A11 SoC. Signed-off-by:
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Jassi Brar authored
This patch adds documentation for Device-Tree bindings for the Socionext NetSec Controller driver. Reviewed-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queueDavid S. Miller authored
Jeff Kirsher says: ==================== 10GbE Intel Wired LAN Driver Updates 2018-01-09 This series contains updates to ixgbe and ixgbevf only. Emil fixes an issue with "wake on LAN"(WoL) where we need to ensure we enable the reception of multicast packets so that WoL works for IPv6 magic packets. Cleaned up code no longer needed with the update to adaptive ITR. Paul update the driver to advertise the highest capable link speed when a module gets inserted. Also extended the displaying of firmware version to include the iSCSI and OEM block in the EEPROM to better identify firmware versions/images. Tonghao Zhang cleans up a code comment that no longer applies since InterruptThrottleRate has been removed from the driver. Alex fixes SR-IOV and MACVLAN offload interaction, where the MACVLAN offload was incorrectly configuring several filters with the wrong pool value which resulted in MACLVAN interfaces not being able to receive traffic that had to pass over the physical interface. Fixed transmit hangs and dropped receive frames when the number of VFs changed. Added support for RSS on MACVLAN pools for X550 devices. Fixed up the MACVLAN limitations so we can now support 63 offloaded devices. Cleaned up MACVLAN code that is no longer needed with the recent changes and fixes. ==================== Signed-off-by:
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- 09 Jan, 2018 11 commits
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David S. Miller authored
Heiner Kallweit says: ==================== r8169: improve runtime pm On my system with two network ports I found that runtime PM didn't suspend the unused port. Therefore I checked runtime pm in this driver in somewhat more detail and this series improves runtime pm in general and solves the mentioned issue. Tested on a system with RTL8168evl (MAC version 34). ==================== Signed-off-by: -
Heiner Kallweit authored
So far rpm doesn't cover cases like unused ports which are never brought up. If they are active at probe time they remain in this state. Included in this patch: - Let the idle notification check whether we can suspend and let it schedule the suspend. This way we don't need to have calls to pm_schedule_suspend in different places. - At the end of rtl_open and rtl_init_one send an idle notification to allow suspending if the link is down. If a cable is plugged in aneg is finished before the suspend timer expires and the suspend request is cancelled. - Change rtl8169_runtime_suspend to power down the chip if the interface is down. Successfully tested on a RTL8168evl (mac version 34). Signed-off-by:
Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by:
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Heiner Kallweit authored
This patch partially reverts commit e4fbce74 "r8169: Fix runtime power management" from 2010. At that time the suspend delay was 100ms and therefore suspending happened during initial aneg. Currently suspend delay is 5s, so suspend starts after aneg and the issue doesn't exist any longer. On my system aneg takes almost 3s, to be on the safe side let's increase the suspend delay to 10s. Signed-off-by:
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Heiner Kallweit authored
This patch reverts commit 2a15cd2f "r8169: runtime resume before shutdown" from 2012. Few months after this change the underlying issue was solved in the PCI core with commit 3ff2de9b "PCI/PM: Resume device before shutdown". Signed-off-by:
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David S. Miller authored
Jon Maloy says: ==================== tipc: improvements to group messaging We make a number of simplifications and improvements to the group messaging service. They aim at readability/maintainability of the code as well as scalability. The series is based on commit f9c935db ("tipc: fix problems with multipoint-to-point flow control) which has been applied to 'net' but not yet to 'net-next'. ==================== Signed-off-by:
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Jon Maloy authored
The current criteria for returning POLLOUT from a group member socket is too simplistic. It basically returns POLLOUT as soon as the group has external destinations, something obviously leading to a lot of spinning during destination congestion situations. At the same time, the internal congestion handling is unnecessarily complex. We now change this as follows. - We introduce an 'open' flag in struct tipc_group. This flag is used only to help poll() get the setting of POLLOUT right, and *not* for congeston handling as such. This means that a user can choose to ignore an EAGAIN for a destination and go on sending messages to other destinations in the group if he wants to. - The flag is set to false every time we return EAGAIN on a send call. - The flag is set to true every time any member, i.e., not necessarily the member that caused EAGAIN, is removed from the small_win list. - We remove the group member 'usr_pending' flag. The size of the send window and presence in the 'small_win' list is sufficient criteria for recognizing congestion. This solution seems to be a reasonable compromise between 'anycast', which is normally not waiting for POLLOUT for a specific destination, and the other three send modes, which are. Acked-by:
Ying Xue <ying.xue@windriver.com> Signed-off-by:
Jon Maloy <jon.maloy@ericsson.com> Signed-off-by:
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Jon Maloy authored
When a member joins a group, it also indicates a binding scope. This makes it possible to create both node local groups, invisible to other nodes, as well as cluster global groups, visible everywhere. In order to avoid that different members end up having permanently differing views of group size and memberhip, we must inhibit locally and globally bound members from joining the same group. We do this by using the binding scope as an additional separator between groups. I.e., a member must ignore all membership events from sockets using a different scope than itself, and all lookups for message destinations must require an exact match between the message's lookup scope and the potential target's binding scope. Apart from making it possible to create local groups using the same identity on different nodes, a side effect of this is that it now also becomes possible to create a cluster global group with the same identity across the same nodes, without interfering with the local groups. Acked-by:
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Jon Maloy authored
Currently, when a user is subscribing for binding table publications, he will receive a PUBLISH event for all already existing matching items in the binding table. However, a group socket making a subscriptions doesn't need this initial status update from the binding table, because it has already scanned it during the join operation. Worse, the multiplicatory effect of issuing mutual events for dozens or hundreds group members within a short time frame put a heavy load on the topology server, with the end result that scale out operations on a big group tend to take much longer than needed. We now add a new filter option, TIPC_SUB_NO_STATUS, for topology server subscriptions, so that this initial avalanche of events is suppressed. This change, along with the previous commit, significantly improves the range and speed of group scale out operations. We keep the new option internal for the tipc driver, at least for now. Acked-by:
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Jon Maloy authored
When a socket is joining a group, we look up in the binding table to find if there are already other members of the group present. This is used for being able to return EAGAIN instead of EHOSTUNREACH if the user proceeds directly to a send attempt. However, the information in the binding table can be used to directly set the created member in state MBR_PUBLISHED and send a JOIN message to the peer, instead of waiting for a topology PUBLISH event to do this. When there are many members in a group, the propagation time for such events can be significant, and we can save time during the join operation if we use the initial lookup result fully. In this commit, we eliminate the member state MBR_DISCOVERED which has been the result of the initial lookup, and do instead go directly to MBR_PUBLISHED, which initiates the setup. After this change, the tipc_member FSM looks as follows: +-----------+ ---->| PUBLISHED |-----------------------------------------------+ PUB- +-----------+ LEAVE/WITHRAW | LISH |JOIN | | +-------------------------------------------+ | | | LEAVE/WITHDRAW | | | | +------------+ | | | | +----------->| PENDING |---------+ | | | | |msg/maxactv +-+---+------+ LEAVE/ | | | | | | | | WITHDRAW | | | | | | +----------+ | | | | | | | |revert/maxactv| | | | | | | V V V V V | +----------+ msg +------------+ +-----------+ +-->| JOINED |------>| ACTIVE |------>| LEAVING |---> | +----------+ +--- -+------+ LEAVE/+-----------+DOWN | A A | WITHDRAW A A A EVT | | | |RECLAIM | | | | | |REMIT V | | | | | |== adv +------------+ | | | | | +---------| RECLAIMING |--------+ | | | | +-----+------+ LEAVE/ | | | | |REMIT WITHDRAW | | | | |< adv | | | |msg/ V LEAVE/ | | | |adv==ADV_IDLE+------------+ WITHDRAW | | | +-------------| REMITTED |------------+ | | +------------+ | |PUBLISH | JOIN +-----------+ LEAVE/WITHDRAW | ---->| JOINING |-----------------------------------------------+ +-----------+ Acked-by: -
Jon Maloy authored
After the changes in the previous commit the group LEAVE sequence can be simplified. We now let the arrival of a LEAVE message unconditionally issue a group DOWN event to the user. When a topology WITHDRAW event is received, the member, if it still there, is set to state LEAVING, but we only issue a group DOWN event when the link to the peer node is gone, so that no LEAVE message is to be expected. Acked-by:
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Jon Maloy authored
In the current implementation, a group socket receiving topology events about other members just converts the topology event message into a group event message and stores it until it reaches the right state to issue it to the user. This complicates the code unnecessarily, and becomes impractical when we in the coming commits will need to create and issue membership events independently. In this commit, we change this so that we just notice the type and origin of the incoming topology event, and then drop the buffer. Only when it is time to actually send a group event to the user do we explicitly create a new message and send it upwards. Acked-by:
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