- May 03, 2016
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Eric Dumazet authored
Socket backlog processing is a major latency source. With current TCP socket sk_rcvbuf limits, I have sampled __release_sock() holding cpu for more than 5 ms, and packets being dropped by the NIC once ring buffer is filled. All users are now ready to be called from process context, we can unblock BH and let interrupts be serviced faster. cond_resched_softirq() could be removed, as it has no more user. Signed-off-by:
Eric Dumazet <edumazet@google.com> Acked-by:
Soheil Hassas Yeganeh <soheil@google.com> Acked-by:
Alexei Starovoitov <ast@kernel.org> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Eric Dumazet authored
sctp_inq_push() will soon be called without BH being blocked when generic socket code flushes the socket backlog. It is very possible SCTP can be converted to not rely on BH, but this needs to be done by SCTP experts. Signed-off-by:
Eric Dumazet <edumazet@google.com> Acked-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Eric Dumazet authored
UDP uses the generic socket backlog code, and this will soon be changed to not disable BH when protocol is called back. We need to use appropriate SNMP accessors. Signed-off-by:
Eric Dumazet <edumazet@google.com> Acked-by:
Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Eric Dumazet authored
DCCP uses the generic backlog code, and this will soon be changed to not disable BH when protocol is called back. Signed-off-by:
Eric Dumazet <edumazet@google.com> Acked-by:
Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Eric Dumazet authored
AFAIK, nothing in current TCP stack absolutely wants BH being disabled once socket is owned by a thread running in process context. As mentioned in my prior patch ("tcp: give prequeue mode some care"), processing a batch of packets might take time, better not block BH at all. Signed-off-by:
Eric Dumazet <edumazet@google.com> Acked-by:
Soheil Hassas Yeganeh <soheil@google.com> Acked-by:
Alexei Starovoitov <ast@kernel.org> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Eric Dumazet authored
We want to to make TCP stack preemptible, as draining prequeue and backlog queues can take lot of time. Many SNMP updates were assuming that BH (and preemption) was disabled. Need to convert some __NET_INC_STATS() calls to NET_INC_STATS() and some __TCP_INC_STATS() to TCP_INC_STATS() Before using this_cpu_ptr(net->ipv4.tcp_sk) in tcp_v4_send_reset() and tcp_v4_send_ack(), we add an explicit preempt disabled section. Signed-off-by:
Eric Dumazet <edumazet@google.com> Acked-by:
Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
Iyappan Subramanian says: ==================== drivers: net: xgene: fix: Get channel number from device binding This patch set adds 'channel' property to get ethernet to CPU channel number, thus decoupling the Linux driver from static resource selection. v2: Address review comments from v1 - removed irq reference from Linux driver - added 'channel' property to get ethernet to CPU channel number v1: - Initial version ==================== Signed-off-by:
Iyappan Subramanian <isubramanian@apm.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Iyappan Subramanian authored
Added 'channel' property, describing ethernet to CPU channel number. Signed-off-by:
Iyappan Subramanian <isubramanian@apm.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Iyappan Subramanian authored
Signed-off-by:
Iyappan Subramanian <isubramanian@apm.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Iyappan Subramanian authored
This patch gets ethernet to CPU channel (prefetch buffer number) from the newly added 'channel' property, thus decoupling Linux driver from resource management. Signed-off-by:
Iyappan Subramanian <isubramanian@apm.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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- May 02, 2016
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David S. Miller authored
Sudarsana Reddy Kalluru says: ==================== qed/qede: ethtool selftests support. This series adds the driver support for following selftests: 1. Register test 2. Memory test 3. Clock test 4. Interrupt test 5. Internal loopback test Patch (1) adds the qed driver infrastructure for selftests. Patches (2) and (3) add qede driver support for ethtool selftests. Please consider applying this series to "net-next". ==================== Signed-off-by:
David S. Miller <davem@davemloft.net>
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Sudarsana Reddy Kalluru authored
This patch adds the qede implementation for internal loopback test. Signed-off-by:
Sudarsana Reddy Kalluru <sudarsana.kalluru@qlogic.com> Signed-off-by:
Yuval Mintz <Yuval.Mintz@qlogic.com> Signed-off-by:
Manish Chopra <manish.chopra@qlogic.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Sudarsana Reddy Kalluru authored
This patch adds the qede ethtool support for the following tests: - interrupt test - memory test - register test - clock test Signed-off-by:
Sudarsana Reddy Kalluru <sudarsana.kalluru@qlogic.com> Signed-off-by:
Yuval Mintz <Yuval.Mintz@qlogic.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Sudarsana Reddy Kalluru authored
This patch adds the functionality and APIs needed for selftests. It adds the ability to configure the link-mode which is required for the implementation of loopback tests. It adds the APIs for clock test, register test, interrupt test and memory test. Signed-off-by:
Sudarsana Reddy Kalluru <sudarsana.kalluru@qlogic.com> Signed-off-by:
Yuval Mintz <Yuval.Mintz@qlogic.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Andrew Lunn authored
The dsa_switch structure ds is actually needed in very few places, mostly during setup of the switch. The private structure ps is however needed nearly everywhere. Pass ps, not ds internally. [vd: rebased Andrew's patch.] Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queueDavid S. Miller authored
Jeff Kirsher says: ==================== 40GbE Intel Wired LAN Driver Updates 2016-05-01 This series contains updates to i40e and i40evf. The theme of this series is code reduction, with several code cleanups in this series. Starting with Neerav's removal of the code that implemented the HMC AQ APIs and calls, since they are now obsolete and not supported by firmware. Anjali changes the default of VFs to make sure they are not trusted or privileged until its explicitly set for trust through the new NDO op interface. Also limited the number of MAC and VLAN addresses a VF can add if it is untrusted/privileged. Carolyn syncs the VF code for the changes made to the PF for the RSS hash tuple settings, which ends up cleaning up much of the existing code. Jesse cleans up compiler warnings which were found with gcc's W=2 option. Then removed duplicate code, especially since only one copy was actually being used. Jacob addresses an issue which was found when testing GCC 6's which happens to produce new warnings when you left shift a signed value beyond the storage sizeof the type. The converts i40e & i40evf to use the BIT() macro more consistently. Alex actually bucks the trend of code removal by adding support for both drivers to use GSO_PARTIAL so that segmentation of frames with checksums enabled in outer headers is supported. Fortunately it does not take much to add this support! ==================== Signed-off-by:
David S. Miller <davem@davemloft.net>
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Marcelo Ricardo Leitner authored
Dave Miller pointed out that fb586f25 ("sctp: delay calls to sk_data_ready() as much as possible") may insert latency specially if the receiving application is running on another CPU and that it would be better if we signalled as early as possible. This patch thus basically inverts the logic on fb586f25 and signals it as early as possible, similar to what we had before. Fixes: fb586f25 ("sctp: delay calls to sk_data_ready() as much as possible") Reported-by:
Dave Miller <davem@davemloft.net> Signed-off-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Marek Vasut authored
Since commit b74766a0 ("phylib: don't return NULL from get_phy_device()") in linux-next, phy_get_device() will return ERR_PTR(-ENODEV) instead of NULL if the PHY device ID is all ones. This causes problem with stmmac driver and likely some other drivers which call mdiobus_register(). I triggered this bug on SoCFPGA MCVEVK board with linux-next 20160427 and 20160428. In case of the stmmac, if there is no PHY node specified in the DT for the stmmac block, the stmmac driver ( drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c function stmmac_mdio_register() ) will call mdiobus_register() , which will register the MDIO bus and probe for the PHY. The mdiobus_register() resp. __mdiobus_register() iterates over all of the addresses on the MDIO bus and calls mdiobus_scan() for each of them, which invokes get_phy_device(). Before the aforementioned patch, the mdiobus_scan() would return NULL if no PHY was found on a given address and mdiobus_register() would continue and try the next PHY address. Now, mdiobus_scan() returns ERR_PTR(-ENODEV), which is caught by the 'if (IS_ERR(phydev))' condition and the loop exits immediately if the PHY address does not contain PHY. Repair this by explicitly checking for the ERR_PTR(-ENODEV) and if this error comes around, continue with the next PHY address. Signed-off-by:
Marek Vasut <marex@denx.de> Cc: Arnd Bergmann <arnd@arndb.de> Cc: David S. Miller <davem@davemloft.net> Cc: Dinh Nguyen <dinguyen@opensource.altera.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Acked-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Alexander Duyck authored
This patch makes it so that i40e and i40evf can use GSO_PARTIAL to support segmentation for frames with checksums enabled in outer headers. As a result we can now send data over these types of tunnels at over 20Gb/s versus the 12Gb/s that was previously possible on my system. The advantage with the i40e parts is that this offload is mostly transparent as the hardware still deals with the inner and/or outer IPv4 headers so the IP ID is still incrementing for both when this offload is performed. Signed-off-by:
Alexander Duyck <aduyck@mirantis.com> Tested-by:
Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Jacob Keller authored
Signed-off-by:
Jacob Keller <jacob.e.keller@intel.com> Tested-by:
Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Jacob Keller authored
Signed-off-by:
Jacob Keller <jacob.e.keller@intel.com> Tested-by:
Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Jacob Keller authored
GCC 6 has a new warning which will display when you attempt to left shift a signed value beyond the storage size of the type. I40E_MASK generates a mask value for 32bit registers. Properly typecast the mask value and place the values in parenthesis to prevent macro expansion issues. Signed-off-by:
Jacob Keller <jacob.e.keller@intel.com> Tested-by:
Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Harshitha Ramamurthy authored
Signed-off-by:
Harshitha Ramamurthy <harshitha.ramamurthy@intel.com> Tested-by:
Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Catherine Sullivan authored
Add a device ID for X722. Change-Id: I574f2345ab341de98a6a1c212d0603af853e48b0 Signed-off-by:
Catherine Sullivan <catherine.sullivan@intel.com> Tested-by:
Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Jesse Brandeburg authored
i40e_release_rx_desc was in two files, but was only used and needed in txrx.c. Get rid of the extra copy. Change-Id: I86e18239aa03531fc198b6c052847475084a9200 Signed-off-by:
Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by:
Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Jesse Brandeburg authored
The driver was all over the place using signed or unsigned types for vf_id, when it should always be signed. This fixes warnings of type unsafe comparisons from gcc with W=2. Change-Id: I2cb681f83d0f68ca124d2e4131e4ac0d9f8a6b22 Signed-off-by:
Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by:
Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Jesse Brandeburg authored
Aggregate return warnings are when struct types are returned and must be copied to the lvalue with a struct copy by the compiler. This fixes warnings of type aggregate-return from gcc with W=2. Change-Id: I896b1bf514544bf0faeb458869d79914b9f1b168 Signed-off-by:
Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Catherine Sullivan authored
We have an uninitialized variable warning for valid_len for one case in validate_vf_mesg. To fix this, just initialize it to 0 at the top of the function and remove all of the now redundant assignments to 0 in the individual cases. Change-Id: Iacbd97f4c521ed8d662eef803a598d8707708cfd Signed-off-by:
Catherine Sullivan <catherine.sullivan@intel.com> Tested-by:
Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Carolyn Wyborny authored
This patch syncs the VF code for the changes made to the PF for the RSS hash tuple settings. Since the VF still cannot change the RSS hash settings, change the code to make this clear to the user. Previously, the default settings were returned in this function. However, the default can be changed by the PF so this does not make sense anymore. Change-Id: I085eaf005fc7978b440d2a1bf2b2dd7cadaff39b Signed-off-by:
Carolyn Wyborny <carolyn.wyborny@intel.com> Tested-by:
Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Neerav Parikh authored
Remove the code that implements the HMC AQ APIs and call these APIs. This is done because these are obsolete APIs and are not supported by firmware. Change-ID: I5d771d8f37c3e16e7b0a972ff9b27e75aa2d05d4 Signed-off-by:
Neerav Parikh <neerav.parikh@intel.com> Tested-by:
Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Anjali Singhai Jain authored
With this change a non trusted VF can never fall to promiscuous mode when there is no room for a MAC/VLAN filter. Change-Id: I8a155aa25c0bcdc6093414920c9ade4ee0bd20e8 Signed-off-by:
Anjali Singhai Jain <anjali.singhai@intel.com> Tested-by:
Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Anjali Singhai Jain authored
If the VF is privileged/trusted it can do as it may please including but not limited to hogging resources and playing unfair. But if the VF is not privileged/trusted it still can add some number (8) of MAC and VLAN addresses. Other restrictions with respect to Port VLAN and normal VLAN still apply to not privileged/trusted VF. Change-Id: I3a9529201b184c8873e1ad2e300aff468c9e6296 Signed-off-by:
Anjali Singhai Jain <anjali.singhai@intel.com> Tested-by:
Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Jon Paul Maloy authored
When we are displaying statistics for the first link established between two peers, it will always be presented as STANDBY although it in reality is ACTIVE. This happens because we forget to set the 'active' flag in the link instance at the moment it is established. Although this is a bug, it only has impact on the presentation view of the link, not on its actual functionality. Signed-off-by:
Jon Maloy <jon.maloy@ericsson.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Florian Fainelli authored
Add a check whether the 'struct device_node' pointer passed to of_mdiobus_register() is an available (aka enabled) node in the Device Tree. Rationale for doing this are cases where an Ethernet MAC provides a MDIO bus controller and node, and an additional Ethernet MAC might be connecting its PHY/switches to that first MDIO bus controller, while still embedding one internally which is therefore marked as "disabled". Instead of sprinkling checks like these in callers of of_mdiobus_register(), do this in a central location. Reviewed-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Anjali Singhai Jain authored
Make sure a VF is not trusted/privileged until its explicitly set for trust through the new NDO op interface. Change-Id: I476385c290d2b4901d8fceb29de43546accdc499 Signed-off-by:
Anjali Singhai Jain <anjali.singhai@intel.com> Tested-by:
Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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- Apr 30, 2016
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David S. Miller authored
Saeed Mahameed says: ==================== Mellanox 100G mlx5 ethernet aRFS support This series adds accelerated RFS support for the mlx5e driver. I have added one patch non-related to aRFS that fixes the rtnl_lock warning mlx5 driver been getting since b7aade15 ('vxlan: break dependency with netdev drivers') aRFS support in details: A direct TIR per RQ is now required in order to have the essential building blocks for aRFS. Today the driver has one direct TIR that forwards traffic to RQ[0] (core 0), and one indirect TIR for RSS indirection table. For that we've added one direct TIR per RQ, e.g.: TIR[i] -> RQ[i] (core i). Publicize Modify flow rule destination and reveal it in flow steering API, to have the ability to dynamically modify the destination TIR(core) for aRFS rules from the ethernet driver. Initializing CPU reverse mapping to notify upper layer on internal receive queue cpu mappings. Some design refactoring for mlx5e ethernet driver flow tables and flow steering API. Now the caller of create_flow_table can choose the level of the flow table, this way we will create the mlx5e flow tables in a reversed order and connect them as we go, we create flow table[i+1] before flow table[i] to be able to set flow table[i + 1] as a destination of flow table[i] once flow table[i] is created. also we have split the main flow table in the following manner: - From before: RX packet had to visit two flow tables until it is delivered to its receive queue: RX packet -> vlan filter flow table -> main flow table. > vlan filter will check the packet vlan field is allowed. > main flow will check if the dest mac is allowed and will check the l3/l4 headers to retrieve the RSS hash for steering the packet into its final receive queue. - Now main flow table is split into l2 dst mac steering table and ttc (traffic type classifier) table: RX packet -> vlan filter -> l2 table -> ttc table > vlan filter - same as before > L2 filter - filter packets according their destination mac address > ttc table - classify packet headers for RSS steering - L3/L4 classification rules to steer the packet according to thier headers hash - in case of none of the rules applies the packet is steered to RQ[0] After the above refactoring all left to-do is to create aRFS flow table which will manage aRFS steering rules to forward traffic to the desired RQ (core) and just connect the ttc table rules destinations to aRFS flow table. aRFS flow table in case of a miss will deliver the traffic to the core where the original ttc hash would have chosen. TTC table is not initialized and enabled until the user explicitly asks to, i.e. setting the NETIF_F_NTUPLE to ON. This way there is no need for ttc table to forward traffic to aRFS table unless required. When setting back to OFF aRFS flow table is disabled and disconnected. ==================== Signed-off-by:
David S. Miller <davem@davemloft.net>
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Maor Gottlieb authored
Accelerated RFS requires that ntuple filtering is enabled via ethtool and driver supports ndo_rx_flow_steer. When the ntuple filtering is enabled, we modify the l3_l4 ttc rules to point on the aRFS flow tables and when the filtering is disabled, we modify the l3_l4 ttc rules to point on the RSS TIRs. Signed-off-by:
Maor Gottlieb <maorg@mellanox.com> Signed-off-by:
Saeed Mahameed <saeedm@mellanox.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Maor Gottlieb authored
Implement ndo_rx_flow_steer ndo. A new flow steering rule will be composed from the skb 4-tuple and added to the hardware aRFS flow table. Each rule is stored in an internal hash table, if such skb 4-tuple rule already exists we update the corresponding hardware steering rule with the new destination. For garbage collection rps_may_expire_flow will be invoked for a limited amount of old rules upon any ndo_rx_flow_steer invocation. Signed-off-by:
Maor Gottlieb <maorg@mellanox.com> Signed-off-by:
Saeed Mahameed <saeedm@mellanox.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Maor Gottlieb authored
Create the following four flow tables for aRFS usage: 1. IPv4 TCP - filtering 4-tuple of IPv4 TCP packets. 2. IPv6 TCP - filtering 4-tuple of IPv6 TCP packets. 3. IPv4 UDP - filtering 4-tuple of IPv4 UDP packets. 4. IPv6 UDP - filtering 4-tuple of IPv6 UDP packets. Each flow table has two flow groups: one for the 4-tuple filtering (full match) and the other contains * rule for miss rule. Full match rule means a hit for aRFS and packet will be forwarded to the dedicated RQ/Core, miss rule packets will be forwarded to default RSS hashing. Signed-off-by:
Maor Gottlieb <maorg@mellanox.com> Signed-off-by:
Saeed Mahameed <saeedm@mellanox.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Maor Gottlieb authored
Allocating CPU rmap and add entry for each IRQ. CPU rmap is used in aRFS to get the RX queue number of the RX completion interrupts. Signed-off-by:
Maor Gottlieb <maorg@mellanox.com> Signed-off-by:
Saeed Mahameed <saeedm@mellanox.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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