- 11 Sep, 2016 40 commits
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Markus Elfring authored
Replace the specification of a data structure by a pointer dereference as the parameter for the operator "sizeof" to make the corresponding size determination a bit safer according to the Linux coding style convention. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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Markus Elfring authored
* A multiplication for the size determination of a memory allocation indicated that an array data structure should be processed. Thus use the corresponding function "kmalloc_array". This issue was detected by using the Coccinelle software. * Replace the specification of a data type by a pointer dereference to make the corresponding size determination a bit safer according to the Linux coding style convention. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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Markus Elfring authored
The script "checkpatch.pl" can point out that assignments should usually not be performed within condition checks. Thus move an assignment for a local variable to a separate statement in this function. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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Markus Elfring authored
* The script "checkpatch.pl" can point out that assignments should usually not be performed within condition checks. Thus move an assignment for a local variable to a separate statement in this function. * Replace the specification of a data structure by a pointer dereference as the parameter for the operator "sizeof" to make the corresponding size determination a bit safer according to the Linux coding style convention. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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Markus Elfring authored
Replace the specification of a data structure by a reference for a field in a local variable as the parameter for the operator "sizeof" to make the corresponding size determination a bit safer according to the Linux coding style convention. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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Markus Elfring authored
Replace the specification of a data structure by a pointer dereference as the parameter for the operator "sizeof" to make the corresponding size determination a bit safer according to the Linux coding style convention. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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Markus Elfring authored
* A multiplication for the size determination of a memory allocation indicated that an array data structure should be processed. Thus use the corresponding function "kmalloc_array". This issue was detected by using the Coccinelle software. * Replace the specification of a data type by a pointer dereference to make the corresponding size determination a bit safer according to the Linux coding style convention. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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Eric Dumazet authored
Willem noticed that we could avoid an rbtree lookup if the the attempt to coalesce incoming skb to the last skb failed for some reason. Since most ooo additions are at the tail, this is definitely worth adding a test and fast path. Suggested-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Yaogong Wang <wygivan@google.com> Cc: Yuchung Cheng <ycheng@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
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Thadeu Lima de Souza Cascardo authored
When userspace tries to create datapaths and the module is not loaded, it will simply fail. With this patch, the module will be automatically loaded. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@redhat.com> Acked-by: Pravin B Shelar <pshelar@ovn.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Stephen Hemminger authored
These functions are used by other code misc-next tree. This reverts commit 30d1de08. Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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David S. Miller authored
Saeed Mahameed says: ==================== Mellanox 100G mlx5 seamless error recovery This series from Mohamad improves the driver load/unload flows to seamlessly handle pci errors and device internal errors recovery reset flows. Current pci and internal error handling is too heavy and is done with a full restart of the driver by unregistering mlx5 interfaces (mlx5e netedevs and mlx5_ib) which will cause losing all the current interfaces and mlx5 core configurations. To improve this, we add new callback functions of mlx5 interface object (attach/detach) to be called upon reset flows when errors are detected rather than calling register and unregister interfaces. On their side, interfaces such as (mlx5e and mlx5_ib) can choose to implement those callback, if not, the old heavy reset will be called for that interface. For non-interface mlx5 modules such as sriov and eswitch, we refactored and reorganized the code in a way that the software state objects are created only once on driver load. Those software state objects are kept upon reset recovery flows and only freed once on driver unload. On seamless soft reset flows, only hardware resources are released on stop and re-allocated on start according to the current soft state. In this series only mlx5e interface implements attach/detach callbacks so that the netdevice will be kept alive on reset. On detach only hardware resources are released and the netdevice will be marked as detached to the stack. Once attached again it will re-allocate the hardware resources according to the current netdevice state, and all the configurations and the software state will be kept or restored after recovery. Note: I will be out of office all next week, in case of any updates or V2 is required, Tariq will post the new series, I hope it is ok. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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Mohamad Haj Yahia authored
Hide the exposed (external) mlx5_dev_list and mlx5_intf_mutex and expose an organized modular API to manage and manipulate mlx5 devices list. Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mohamad Haj Yahia authored
When detaching the mlx5e interface clear all the vlans rules from the vlan flow table. When attaching it back restore all the active vlans rules to the HW. Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mohamad Haj Yahia authored
Needed to support seamless and lightweight PCI/Internal error recovery. Implement the attach/detach interface callbacks. In attach callback we only allocate HW resources. In detach callback we only deallocate HW resources. All SW/kernel objects initialzing/destroying is kept in add/remove callbacks. Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mohamad Haj Yahia authored
Save the user configuration in the vport sturct. Restore saved old configuration upon vport enable. Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mohamad Haj Yahia authored
Init/cleanup sriov/eswitch in the core software context init/cleanup flows. Attach/detach sriov/eswitch in the core load/unload flows. Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mohamad Haj Yahia authored
Needed for lightweight and modular internal/pci error handling. Implement eswitch attach function which allocates/starts hw related resources. Implement eswitch detach function which releases/stops hw related resources. Init/cleanup function only handle eswitch software context allocation and destruction. Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mohamad Haj Yahia authored
Needed for lightweight and modular internal/pci error handling. Implement sriov attach function which enables pre-saved number of vfs on the device side. Implement sriov detach function which disable the current vfs on the device side. Init/cleanup function only handles sriov software context allocation and destruction. Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mohamad Haj Yahia authored
Gather all software context creating/destroying in one function and call it once in the first load and in the last unload. load/unload functions will now receive indication if we need to create/destroy the software contexts. In internal/pci error do the unload/load flows without releasing the software objects. In this way we perserve the sw core state and it help us restoring old driver state after PCI error/shutdown. Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mohamad Haj Yahia authored
Add attach/detach callbacks to interface API. This is crucial for implementing seamless reset flow which releases the hardware and it's resources upon detach while keeping software structures and state (e.g netdev) then reset and reallocate the hardware needed resources upon attach. Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mohamad Haj Yahia authored
Simplify the code and makes it look modular and symmetric. Split sriov enable/disable to two levels: device level and pci level. When user enable/disable sriov (via sriov_configure driver callback) we will enable/disable both device and pci sriov. When driver load/unload we will enable/disable (on demand) only device sriov while keeping the PCI sriov enabled for next driver load. On internal/pci error, VFs will be kept enabled on PCI and the reset is done only in device level. Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Mohamad Haj Yahia authored
In case of device in internal error state there is no need to wait for vf pages since they will be reclaimed manually later in the unload flow. Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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David S. Miller authored
Javier Martinez Canillas says: ==================== net: use IS_ENABLED() instead of checking for built-in or module This trivial series replace the open coding to check for a Kconfig symbol being built-in or module, with IS_ENABLED() macro that does exactly that. Using the macro makes the code more readable by helping abstract away some of the Kconfig built-in and module enable details. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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Javier Martinez Canillas authored
The IS_ENABLED() macro checks if a Kconfig symbol has been enabled either built-in or as a module, use that macro instead of open coding the same. Using the macro makes the code more readable by helping abstract away some of the Kconfig built-in and module enable details. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Javier Martinez Canillas authored
The IS_ENABLED() macro checks if a Kconfig symbol has been enabled either built-in or as a module, use that macro instead of open coding the same. Using the macro makes the code more readable by helping abstract away some of the Kconfig built-in and module enable details. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Javier Martinez Canillas authored
The IS_ENABLED() macro checks if a Kconfig symbol has been enabled either built-in or as a module, use that macro instead of open coding the same. Using the macro makes the code more readable by helping abstract away some of the Kconfig built-in and module enable details. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Javier Martinez Canillas authored
The IS_ENABLED() macro checks if a Kconfig symbol has been enabled either built-in or as a module, use that macro instead of open coding the same. Using the macro makes the code more readable by helping abstract away some of the Kconfig built-in and module enable details. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Javier Martinez Canillas authored
The IS_ENABLED() macro checks if a Kconfig symbol has been enabled either built-in or as a module, use that macro instead of open coding the same. Using the macro makes the code more readable by helping abstract away some of the Kconfig built-in and module enable details. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Javier Martinez Canillas authored
The IS_ENABLED() macro checks if a Kconfig symbol has been enabled either built-in or as a module, use that macro instead of open coding the same. Using the macro makes the code more readable by helping abstract away some of the Kconfig built-in and module enable details. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Javier Martinez Canillas authored
The IS_ENABLED() macro checks if a Kconfig symbol has been enabled either built-in or as a module, use that macro instead of open coding the same. Using the macro makes the code more readable by helping abstract away some of the Kconfig built-in and module enable details. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Javier Martinez Canillas authored
The IS_ENABLED() macro checks if a Kconfig symbol has been enabled either built-in or as a module, use that macro instead of open coding the same. Using the macro makes the code more readable by helping abstract away some of the Kconfig built-in and module enable details. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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David S. Miller authored
Christophe Leroy says: ==================== Optimisation of fs_enet ethernet driver This set optimises the freescale fs_enet ethernet driver: 1/ Merge of RX and TX NAPI functions in order to limit the amount of interrupts 2/ Do not unmap DMA when packets len is below copybreak, otherwise there is no benefit in copying the skb instead of allocating a new one 3/ Make copybreak value configurable as the optimised value is not the same on all targets ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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Christophe Leroy authored
Measurement shows that on a MPC8xx running at 132MHz, the optimal limit is 112: * 114 bytes packets are processed in 147 TB ticks with higher copybreak * 114 bytes packets are processed in 148 TB ticks with lower copybreak * 128 bytes packets are processed in 154 TB ticks with higher copybreak * 128 bytes packets are processed in 148 TB ticks with lower copybreak * 238 bytes packets are processed in 172 TB ticks with higher copybreak * 238 bytes packets are processed in 148 TB ticks with lower copybreak However it might be different on other processors and/or frequencies. So it is useful to make it configurable. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
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Christophe Leroy authored
When the length of the packet is below the defined copybreak limit, the received packet is copied into a newly allocated skb in order to reuse the skb. This is only interesting if it allow us to avoid a new DMA mapping. We shall therefore not DMA unmap and remap the skb->data. Instead, we invalidate the cache with dma_sync_single_for_cpu() once the received data has been copied into the new skb. The following measures have been obtained on a mpc885 running at 132Mhz. Measurement is done using the timebase with packets sent to the target with 'ping -s 1' (packet len is 60): * Without this patch: 182 TB ticks * With this patch: 143 TB ticks As a comparison, if we set the copybreak limit to 0, then we get 148 TB ticks. It means that without this patch, duration is even worse when copying received data to a new skb instead of allocating a new skb for next packet to be received Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
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Christophe Leroy authored
Initially, a NAPI TX routine has been implemented separately from NAPI RX, as done on the freescale/gianfar driver. By merging NAPI RX and NAPI TX, we reduce the amount of TX completion interrupts. Handling of the budget in association with TX interrupts is based on indications provided at https://wiki.linuxfoundation.org/networking/napi We never proceed more than the complete TX ring on a single run. At the same time, we fix an issue in the handling of fep->tx_free: It is only when fep->tx_free goes up to MAX_SKB_FRAGS that we need to wake up the queue. There is no need to call netif_wake_queue() at every packet successfully transmitted. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
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David S. Miller authored
Hadar Hen Zion says: ==================== net/sched: ip tunnel metadata set/release/classify by using TC This patchset introduces ip tunnel manipulation support using the TC subsystem. In the decap flow, it enables the user to redirect packets from a shared tunnel device and classify by outer and inner headers. The outer headers are extracted from the metadata and used by the flower filter. A new action act_tunnel_key, releases the metadata. In the encap flow, act_tunnel_key creates a metadata object to be used by the shared tunnel device. The actual redirection to the tunnel device is done using act_mirred. For example: $ tc qdisc add dev vnet0 ingress $ tc filter add dev vnet0 protocol ip parent ffff: \ flower \ ip_proto 1 \ action tunnel_key set \ src_ip 11.11.0.1 \ dst_ip 11.11.0.2 \ id 11 \ action mirred egress redirect dev vxlan0 $ tc qdisc add dev vxlan0 ingress $ tc filter add dev vxlan0 protocol ip parent ffff: \ flower \ enc_src_ip 11.11.0.2 \ enc_dst_ip 11.11.0.1 \ enc_key_id 11 \ action tunnel_key release \ action mirred egress redirect dev vnet0 Amir & Hadar Changes from V6: - Add kfree_rcu to tunnel_key_release function - Use reverse Christmas tree order in tunnel_key_init function Changes from V5: - Add __rcu notation to struct tcf_tunnel_key_params in struct tcf_tunnel_key - Fix indentation in include/net/dst_metadata.h - Fix syntx error in commit message Changes from V4: - Fix tunnel_key_init function error flow. - Add 'action' variable to struct tcf_tunnel_key_params and use it instead of tcf_action variable which is not protected by rcu lock. Changes from V3: - Use percpu stats - No spinlock on datapatch - protecting parameters with rcu - Fix buggy handling of set/release dst - Use nla_get_in_addr and nla_put_in_addr - Fix change logs - Pass in6_addr by pointer - Rename utility functions to start with double underscore Changes from V2: - Use union in struct fl_flow_key for enc_ipv6 and enc_ipv4. - Rename functions _ip_tun_rx_dst and _ipv6_tun_rx_dst to _ip_tun_set_dst and _ipv6_tun_set_dst accordingly. - Remove local parameter 'encapdecap' from tunnel_key_init function. - Don't copy in6_addr values in tunnel_key_dump_addresses function, use pointers. Changes from V1: - More cleanups to key32_to_tunnel_id() and tunnel_id_to_key32() - IPv6 Support added - Set TUNNEL_KEY flag to make GRE work - Handle zero tunnel id properly in act_tunnel_key - Don't leave junk in decap action - Fix bug in act_tunnel_key initialization where (exists & ocr) is true - Remove BUG() from code - Rename action to tunnel_key - Improve grep-ability of code - Reuse code from ip_tun_rx_dst() and ipv6_tun_rx_dst() Changes from RFC: - Add a new action instead of making mirred too complex - No need to specify UDP port in action - it is already in the tunnel device configuration - Added a decap operation to drop tunnel metadata ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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Amir Vadai authored
This action could be used before redirecting packets to a shared tunnel device, or when redirecting packets arriving from a such a device. The action will release the metadata created by the tunnel device (decap), or set the metadata with the specified values for encap operation. For example, the following flower filter will forward all ICMP packets destined to 11.11.11.2 through the shared vxlan device 'vxlan0'. Before redirecting, a metadata for the vxlan tunnel is created using the tunnel_key action and it's arguments: $ tc filter add dev net0 protocol ip parent ffff: \ flower \ ip_proto 1 \ dst_ip 11.11.11.2 \ action tunnel_key set \ src_ip 11.11.0.1 \ dst_ip 11.11.0.2 \ id 11 \ action mirred egress redirect dev vxlan0 Signed-off-by: Amir Vadai <amir@vadai.me> Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com> Reviewed-by: Shmulik Ladkani <shmulik.ladkani@gmail.com> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Amir Vadai authored
Introduce classifying by metadata extracted by the tunnel device. Outer header fields - source/dest ip and tunnel id, are extracted from the metadata when classifying. For example, the following will add a filter on the ingress Qdisc of shared vxlan device named 'vxlan0'. To forward packets with outer src ip 11.11.0.2, dst ip 11.11.0.1 and tunnel id 11. The packets will be forwarded to tap device 'vnet0' (after metadata is released): $ tc filter add dev vxlan0 protocol ip parent ffff: \ flower \ enc_src_ip 11.11.0.2 \ enc_dst_ip 11.11.0.1 \ enc_key_id 11 \ dst_ip 11.11.11.1 \ action tunnel_key release \ action mirred egress redirect dev vnet0 The action tunnel_key, will be introduced in the next patch in this series. Signed-off-by: Amir Vadai <amir@vadai.me> Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Amir Vadai authored
Extract __ip_tun_set_dst() and __ipv6_tun_set_dst() out of ip_tun_rx_dst() and ipv6_tun_rx_dst(), to be used without supplying an skb. Signed-off-by: Amir Vadai <amir@vadai.me> Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Reviewed-by: Shmulik Ladkani <shmulik.ladkani@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Amir Vadai authored
Add utility functions to convert a 32 bits key into a 64 bits tunnel and vice versa. These functions will be used instead of cloning code in GRE and VXLAN, and in tc act_iptunnel which will be introduced in a following patch in this patchset. Signed-off-by: Amir Vadai <amir@vadai.me> Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com> Reviewed-by: Shmulik Ladkani <shmulik.ladkani@gmail.com> Acked-by: Jiri Benc <jbenc@redhat.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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