- 18 Mar, 2020 40 commits
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Julian Wiedmann authored
For ucast traffic, qeth_iqd_select_queue() falls back to netdev_pick_tx(). This will potentially use skb_tx_hash() to distribute the flow over all active TX queues - so txq 0 is a valid selection, and qeth_iqd_select_queue() needs to check for this and put it on some other queue. As a result, the distribution for ucast flows is unbalanced and hits QETH_IQD_MIN_UCAST_TXQ heavier than the other queues. Open-coding a custom variant of skb_tx_hash() isn't an option, since netdev_pick_tx() also gives us eg. access to XPS. But we can pull a little trick: add a single TC class that excludes the mcast txq, and thus encourage skb_tx_hash() to not pick the mcast txq. Signed-off-by:
Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Julian Wiedmann authored
Similar to the support for z/VM NICs, but we need to take extra care about the dedicated mcast queue: 1. netdev_pick_tx() is unaware of this limitation and might select the mcast txq. Catch this. 2. require at least _two_ TX queues - one for ucast, one for mcast. 3. when reducing the number of TX queues, there's a potential race where netdev_cap_txqueue() over-rules the selected txq index and falls back to index 0. This would place ucast traffic on the mcast queue, and result in TX errors. So for IQD, reject a reduction while the interface is running. Signed-off-by:
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Julian Wiedmann authored
Add support for ETHTOOL_SCHANNELS to change the count of active TX queues. Since all TX queue structs are pre-allocated and -registered, we just need to trivially adjust dev->real_num_tx_queues. Signed-off-by:
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Julian Wiedmann authored
z/VM NICs don't offer HW QoS for TX rings. So just use netdev_pick_tx() to distribute the connections equally over all enabled TX queues. We start with just 1 enabled TX queue (this matches the typical configuration without prio-queueing). A follow-on patch will allow users to enable additional TX queues. Signed-off-by:
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Julian Wiedmann authored
When falling back to an allocation from the HW header cache, check if the skb is eligible for using memory reserves. This only makes a difference if the cache is empty and needs to be refilled. Signed-off-by:
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Julian Wiedmann authored
Use dev_alloc_page() for backing the RX buffers with pages. This way we pick up __GFP_MEMALLOC. Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-nextDavid S. Miller authored
Pablo Neira Ayuso says: ==================== Netfilter updates for net-next The following patchset contains Netfilter updates for net-next: 1) Use nf_flow_offload_tuple() to fetch flow stats, from Paul Blakey. 2) Add new xt_IDLETIMER hard mode, from Manoj Basapathi. Follow up patch to clean up this new mode, from Dan Carpenter. 3) Add support for geneve tunnel options, from Xin Long. 4) Make sets built-in and remove modular infrastructure for sets, from Florian Westphal. 5) Remove unused TEMPLATE_NULLS_VAL, from Li RongQing. 6) Statify nft_pipapo_get, from Chen Wandun. 7) Use C99 flexible-array member, from Gustavo A. R. Silva. 8) More descriptive variable names for bitwise, from Jeremy Sowden. 9) Four patches to add tunnel device hardware offload to the flowtable infrastructure, from wenxu. 10) pipapo set supports for 8-bit grouping, from Stefano Brivio. 11) pipapo can switch between nibble and byte grouping, also from Stefano. 12) Add AVX2 vectorized version of pipapo, from Stefano Brivio. 13) Update pipapo to be use it for single ranges, from Stefano. 14) Add stateful expression support to elements via control plane, eg. counter per element. 15) Re-visit sysctls in unprivileged namespaces, from Florian Westphal. 15) Add new egress hook, from Lukas Wunner. ==================== Signed-off-by: -
Paolo Abeni authored
After commit 58b09919 ("mptcp: create msk early"), the msk socket is already available at subflow_syn_recv_sock() time. Let's move there the state update, to mirror more closely the first subflow state. The above will also help multiple subflow supports. Signed-off-by:
Paolo Abeni <pabeni@redhat.com> Reviewed-by:
Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by:
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David S. Miller authored
Russell King says: ==================== net: add phylink support for PCS This series adds support for IEEE 802.3 register set compliant PCS for phylink. In order to do this, we: 1. convert BUG_ON() in existing accessors to WARN_ON_ONCE() and return an error. 2. add accessors for modifying a MDIO device register, and use them in phylib, rather than duplicating the code from phylib. 3. add support for decoding the advertisement from clause 22 compatible register sets for clause 37 advertisements and SGMII advertisements. 4. add support for clause 45 register sets for 10GBASE-R PCS. These have been tested on the LX2160A Clearfog-CX platform. v2: eliminate use of BUG_ON() in the accessors. ==================== Signed-off-by: -
Russell King authored
Implement helpers for PCS accessed via the MII bus using 802.3 clause 45 cycles for 10GBASE-R. Only link up/down is supported, 10G full duplex is assumed. Signed-off-by:
Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by:
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Russell King authored
Implement helpers for PCS accessed via the MII bus using 802.3 clause 22 cycles, conforming to 802.3 clause 37 and Cisco SGMII specifications for the advertisement word. Signed-off-by:
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Russell King authored
Add APIs for modifying a MDIO device register, similar to the existing phy_modify() group of functions, but at mdiobus level instead. Adapt __phy_modify_changed() to use the new mdiobus level helper. Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
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Russell King authored
Avoid using BUG_ON() in the mdiobus accessors, prefering instead to use WARN_ON_ONCE() and returning an error. Signed-off-by:
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David S. Miller authored
Nikolay Aleksandrov says: ==================== net: bridge: vlan options: add support for tunnel mapping In order to bring the new vlan API on par with the old one and be able to completely migrate to the new one we need to support vlan tunnel mapping and statistics. This patch-set takes care of the former by making it a vlan option. There are two notable issues to deal with: - vlan range to tunnel range mapping * The tunnel ids are globally unique for the vlan code and a vlan can be mapped to one tunnel, so the old API took care of ranges by taking the starting tunnel id value and incrementally mapping vlan id(i) -> tunnel id(i). This set takes the same approach and uses one new attribute - BRIDGE_VLANDB_ENTRY_TUNNEL_ID. If used with a vlan range then it's the starting tunnel id to map. - tunnel mapping removal * Since there are no reserved/special tunnel ids defined, we can't encode mapping removal within the new attribute, in order to be able to remove a mapping we add a vlan flag which makes the new tunnel option remove the mapping The rest is pretty straight-forward, in fact we directly re-use the old code for manipulating tunnels by just mapping the command (set/del). In order to be able to keep detecting vlan ranges we check that the current vlan has a tunnel and it's extending the current vlan range end's tunnel id. ==================== Signed-off-by: -
Nikolay Aleksandrov authored
This patch adds support for manipulating vlan/tunnel mappings. The tunnel ids are globally unique and are one per-vlan. There were two trickier issues - first in order to support vlan ranges we have to compute the current tunnel id in the following way: - base tunnel id (attr) + current vlan id - starting vlan id This is in line how the old API does vlan/tunnel mapping with ranges. We already have the vlan range present, so it's redundant to add another attribute for the tunnel range end. It's simply base tunnel id + vlan range. And second to support removing mappings we need an out-of-band way to tell the option manipulating function because there are no special/reserved tunnel id values, so we use a vlan flag to denote the operation is tunnel mapping removal. Signed-off-by:
Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by:
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Nikolay Aleksandrov authored
Add a new option - BRIDGE_VLANDB_ENTRY_TUNNEL_ID which is used to dump the tunnel id mapping. Since they're unique per vlan they can enter a vlan range if they're consecutive, thus we can calculate the tunnel id range map simply as: vlan range end id - vlan range start id. The starting point is the tunnel id in BRIDGE_VLANDB_ENTRY_TUNNEL_ID. This is similar to how the tunnel entries can be created in a range via the old API (a vlan range maps to a tunnel range). Signed-off-by:
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Nikolay Aleksandrov authored
The vlan tunnel code changes vlan options, it shouldn't touch port or bridge options so we can constify the port argument. This would later help us to re-use these functions from the vlan options code. Signed-off-by:
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Nikolay Aleksandrov authored
It is more appropriate name as it shows the intent of why we need to check the options' state. It also allows us to give meaning to the two arguments of the function: the first is the current vlan (v_curr) being checked if it could enter the range ending in the second one (range_end). Signed-off-by:
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David S. Miller authored
Jose Abreu says: ==================== net: stmmac: 100GB Enterprise MAC support Adds the support for Enterprise MAC IP version which allows operating speeds up to 100GB. Patch 1/4, adds the support in XPCS for XLGMII interface that is used in this kind of Enterprise MAC IPs. Patch 2/4, adds the XLGMII interface support in stmmac. Patch 3/4, adds the HW specific support for Enterprise MAC. We end in patch 4/4, by updating stmmac documentation to mention the support for this new IP version. ==================== Signed-off-by: -
Jose Abreu authored
Add the Enterprise MAC support to the list of supported IP versions and the newly added XLGMII interface support. Signed-off-by:
Jose Abreu <Jose.Abreu@synopsys.com> Signed-off-by:
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Jose Abreu authored
Adds the support for Enterprise MAC IP version which is very similar to XGMAC. It's so similar that we just need to check the device id and add new speeds definitions and some minor callbacks. Signed-off-by:
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Jose Abreu authored
Add XLGMII support for stmmac including the list of speeds and defines for them. Signed-off-by:
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Jose Abreu authored
Add XLGMII support for XPCS. This does not include Autoneg feature. Signed-off-by:
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David S. Miller authored
Shannon Nelson says: ==================== ionic bits and bytes These are a few little updates to the ionic driver while we are in between other feature work. While these are mostly Fixes, they are almost all low priority and needn't be promoted to net. The one higher need is patch 1, but it is fixing something that hasn't made it out of net-next yet. v3: allow decode of unknown transciever and use type codes from sfp.h v2: add Fixes tags to patches 1-4, and a little description for patch 5 ==================== Signed-off-by: -
Shannon Nelson authored
Add decoding for a new firmware error code. Signed-off-by:
Shannon Nelson <snelson@pensando.io> Signed-off-by:
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Shannon Nelson authored
If we don't recognize the transceiver type, set the xcvr type and data length such that ethtool can at least print the first 256 bytes and the reader can figure out why the transceiver is not recognized. While we're here, we can update the phy_id type values to use the enum values in sfp.h. Fixes: 4d03e00a ("ionic: Add initial ethtool support") Signed-off-by:
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Shannon Nelson authored
Remove the adminq's napi struct when tearing down the adminq. Fixes: 1d062b7b ("ionic: Add basic adminq support") Signed-off-by:
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Shannon Nelson authored
Don't bother de-initing RSS if it wasn't selected. Fixes: aa319881 ("ionic: Add RSS support") Signed-off-by:
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Shannon Nelson authored
If we don't set a port type, the devlink code will eventually print a WARN in the kernel log. Because the mgmt device is not really a useful port, don't register it as a devlink port. Fixes: b3f064e9 ("ionic: add support for device id 0x1004") Signed-off-by:
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David S. Miller authored
Eric Dumazet says: ==================== net_sched: allow use of hrtimer slack Packet schedulers have used hrtimers with exact expiry times. Some of them can afford having a slack, in order to reduce the number of timer interrupts and feed bigger batches to increase efficiency. FQ for example does not care if throttled packets are sent with an additional (small) delay. Original observation of having maybe too many interrupts was made by Willem de Bruijn. v2: added strict netlink checking (Jakub Kicinski) ==================== Signed-off-by: -
Eric Dumazet authored
Add a new attribute to control the fq qdisc hrtimer slack. Default is set to 10 usec. When/if packets are throttled, fq set up an hrtimer that can lead to one interrupt per packet in the throttled queue. By using a timer slack, we allow better use of timer interrupts, by giving them a chance to call multiple timer callbacks at each hardware interrupt. Also, giving a slack allows FQ to dequeue batches of packets instead of a single one, thus increasing xmit_more efficiency. This has no negative effect on the rate a TCP flow can sustain, since each TCP flow maintains its own precise vtime (tp->tcp_wstamp_ns) v2: added strict netlink checking (as feedback from Jakub Kicinski) Tested: 1000 concurrent flows all using paced packets. 1,000,000 packets sent per second. Before the patch : $ vmstat 2 10 procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu----- r b swpd free buff cache si so bi bo in cs us sy id wa st 0 0 0 60726784 23628 3485992 0 0 138 1 977 535 0 12 87 0 0 0 0 0 60714700 23628 3485628 0 0 0 0 1568827 26462 0 22 78 0 0 1 0 0 60716012 23628 3485656 0 0 0 0 1570034 26216 0 22 78 0 0 0 0 0 60722420 23628 3485492 0 0 0 0 1567230 26424 0 22 78 0 0 0 0 0 60727484 23628 3485556 0 0 0 0 1568220 26200 0 22 78 0 0 2 0 0 60718900 23628 3485380 0 0 0 40 1564721 26630 0 22 78 0 0 2 0 0 60718096 23628 3485332 0 0 0 0 1562593 26432 0 22 78 0 0 0 0 0 60719608 23628 3485064 0 0 0 0 1563806 26238 0 22 78 0 0 1 0 0 60722876 23628 3485236 0 0 0 130 1565874 26566 0 22 78 0 0 1 0 0 60722752 23628 3484908 0 0 0 0 1567646 26247 0 22 78 0 0 After the patch, slack of 10 usec, we can see a reduction of interrupts per second, and a small decrease of reported cpu usage. $ vmstat 2 10 procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu----- r b swpd free buff cache si so bi bo in cs us sy id wa st 1 0 0 60722564 23628 3484728 0 0 133 1 696 545 0 13 87 0 0 1 0 0 60722568 23628 3484824 0 0 0 0 977278 25469 0 20 80 0 0 0 0 0 60716396 23628 3484764 0 0 0 0 979997 25326 0 20 80 0 0 0 0 0 60713844 23628 3484960 0 0 0 0 981394 25249 0 20 80 0 0 2 0 0 60720468 23628 3484916 0 0 0 0 982860 25062 0 20 80 0 0 1 0 0 60721236 23628 3484856 0 0 0 0 982867 25100 0 20 80 0 0 1 0 0 60722400 23628 3484456 0 0 0 8 982698 25303 0 20 80 0 0 0 0 0 60715396 23628 3484428 0 0 0 0 981777 25176 0 20 80 0 0 0 0 0 60716520 23628 3486544 0 0 0 36 978965 27857 0 21 79 0 0 0 0 0 60719592 23628 3486516 0 0 0 22 977318 25106 0 20 80 0 0 Signed-off-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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Eric Dumazet authored
qdisc_watchdog_schedule_range_ns() can use the newly added slack and avoid rearming the hrtimer a bit earlier than the current value. This patch has no effect if delta_ns parameter is zero. Note that this means the max slack is potentially doubled. Signed-off-by:
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Eric Dumazet authored
Some packet schedulers might want to add a slack when programming hrtimers. This can reduce number of interrupts and increase batch sizes and thus give good xmit_more savings. This commit adds qdisc_watchdog_schedule_range_ns() helper, with an extra delta_ns parameter. Legacy qdisc_watchdog_schedule_n() becomes an inline passing a zero slack. Signed-off-by:
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David S. Miller authored
Jakub Kicinski says: ==================== net: rename flow_action stats and set NFP type Jiri, I hope this is okay with you, I just dropped the "type" from the helper and value names, and now things should be able to fit on a line, within 80 characters. Second patch makes the NFP able to offload DELAYED stats, which is the type it supports. ==================== Signed-off-by: -
Jakub Kicinski authored
NFP flower offload uses delayed stats. Kernel recently gained the ability to specify stats types. Make nfp accept DELAYED stats, not just the catch all "any". Signed-off-by:
Jakub Kicinski <kuba@kernel.org> Signed-off-by:
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Jakub Kicinski authored
flow_action_hw_stats_types_check() helper takes one of the FLOW_ACTION_HW_STATS_*_BIT values as input. If we align the arguments to the opening bracket of the helper there is no way to call this helper and stay under 80 characters. Remove the "types" part from the new flow_action helpers and enum values. Signed-off-by:
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David S. Miller authored
Heiner Kallweit says: ==================== net: phy: improve phy_driver callback handle_interrupt did_interrupt() clears the interrupt, therefore handle_interrupt() can not check which event triggered the interrupt. To overcome this constraint and allow more flexibility for customer interrupt handlers, let's decouple handle_interrupt() from parts of the phylib interrupt handling. Custom interrupt handlers now have to implement the did_interrupt() functionality in handle_interrupt() if needed. Fortunately we have just one custom interrupt handler so far (in the mscc PHY driver), convert it to the changed API and make use of the benefits. ==================== Signed-off-by: -
Heiner Kallweit authored
Trigger the respective interrupt handler functionality only if the related interrupt source bit is set. Signed-off-by:
Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by:
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Heiner Kallweit authored
did_interrupt() clears the interrupt, therefore handle_interrupt() can not check which event triggered the interrupt. To overcome this constraint and allow more flexibility for customer interrupt handlers, let's decouple handle_interrupt() from parts of the phylib interrupt handling. Custom interrupt handlers now have to implement the did_interrupt() functionality in handle_interrupt() if needed. Fortunately we have just one custom interrupt handler so far (in the mscc PHY driver), convert it to the changed API. Signed-off-by:
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David S. Miller authored
Jakub Kicinski says: ==================== ethtool: consolidate irq coalescing - last part Convert remaining drivers following the groundwork laid in a recent patch set [1] and continued in [2], [3], [4], [5]. The aim of the effort is to consolidate irq coalescing parameter validation in the core. This set is the sixth and last installment. It converts the remaining 8 drivers in drivers/net/ethernet. The last patch makes declaring supported IRQ coalescing parameters a requirement. [1] https://lore.kernel.org/netdev/20200305051542.991898-1-kuba@kernel.org/ [2] https://lore.kernel.org/netdev/20200306010602.1620354-1-kuba@kernel.org/ [3] https://lore.kernel.org/netdev/20200310021512.1861626-1-kuba@kernel.org/ [4] https://lore.kernel.org/netdev/20200311223302.2171564-1-kuba@kernel.org/ [5] https://lore.kernel.org/netdev/20200313040803.2367590-1-kuba@kernel.org/ ==================== Signed-off-by:
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