- 25 Mar, 2017 8 commits
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Saeed Mahameed authored
XDP SQ has a fixed size WQE (MLX5E_XDP_TX_WQEBBS = 1) and only posts one kind of WQE (MLX5_OPCODE_SEND), Also we initialize SQ descriptors static fields once on open_xdpsq, rather than every time on critical path. Optimize the code in light of those facts and add a prefetch of the TX descriptor first thing in the xdp xmit function. Performance improvement: System: Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz Test case Before Now improvement --------------------------------------------------------------- XDP TX (1 core) 13Mpps 13.7Mpps 5% Signed-off-by:
Saeed Mahameed <saeedm@mellanox.com> Reviewed-by:
Tariq Toukan <tariqt@mellanox.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Saeed Mahameed authored
Handle XDP TX completions before handling RX packets, to make sure more free space is available for XDP TX packets a moment before handling RX packets. Performance improvement: System: Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz Test case Before Now improvement --------------------------------------------------------------- XDP Drop (1 core) 16.9Mpps 16.9Mpps No change XDP TX (1 core) 12Mpps 13Mpps 8% Signed-off-by:
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Saeed Mahameed authored
To save many rq->channel->sq dereferences in fast-path. And rename it to xdpsq. Signed-off-by:
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Saeed Mahameed authored
Move struct mlx5e_rq and friends to appear after mlx5e_sq declaration in en.h. We will need this for next patch to move the mlx5e_sq instance into mlx5e_rq struct for XDP SQs. Signed-off-by:
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Saeed Mahameed authored
XDP code belongs to RX path, move mlx5e_poll_xdp_tx_cq and mlx5e_free_xdp_tx_descs to en_rx.c. Rename them to mlx5e_poll_xdpsq_cq and mlx5e_free_xdpsq_descs. Signed-off-by:
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Saeed Mahameed authored
One is sufficient since Blue Flame is not supported anymore. This will also come in handy for switchdev mode to save resources, since VF representors will use same single UAR as well for their own SQs. Signed-off-by:
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Saeed Mahameed authored
mlx5e netdev Blue Flame (write combining) support demands a lot of overhead for a little latency gain for some special cases, this overhead is hurting the common case. Here we remove xmit Blue Flame support by creating all bfregs with no write combining for all SQs, and we remove a lot of BF logic and conditions from xmit data path. Simplify mlx5e_tx_notify_hw (doorbell function) by removing BF related code and by removing one memory barrier needed for WC mapped SQ doorbell buffers, which no longer exist. Performance improvement: System: Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz Test case Before Now improvement --------------------------------------------------------------- TX packets (24 threads) 50Mpps 54Mpps 8% Signed-off-by:
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Saeed Mahameed authored
Use dma_rmb in mlx5e_get_cqe rather than aggressive rmb (at least on some architectures), this should help improve the performance on such CPU archs where dma_rmb is optimized. Performance improvement: System: Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz Test case Baseline Now improvement --------------------------------------------------------------- TX packets (24 threads) 45Mpps 50Mpps 11% TC stack Drop (1 core) 3.45Mpps 3.6Mpps 5% XDP Drop (1 core) 14Mpps 16.9Mpps 20% XDP TX (1 core) 10.4Mpps 12Mpps 15% Signed-off-by:
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- 24 Mar, 2017 32 commits
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Florian Fainelli authored
bcm_sf2 does require the MDIO_BCM_UNIMAC driver which is now dependent on OF_MDIO but also internally uses of_mdio.c provided routines which are guarted with OF_MDIO. Reported-by:
kbuild test robot <fengguang.wu@intel.com> Fixes: 90eff909 ("net: phy: Allow splitting MDIO bus/device support from PHYs") Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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David S. Miller authored
David Lebrun says: ==================== Performances improvement for IPv6 Segment Routing This patch series improves the performances of IPv6 SR by optimizing skb head reallocation and extending the use of dst_cache. The overall performances improve by 35%. Before patch series (SRH encap): Result: OK: 7348320(c7347271+d1048) usec, 5000000 (1000byte,0frags) 680427pps 5443Mb/sec (5443416000bps) errors: 0 After patch series (SRH encap): Result: OK: 4774543(c4774084+d459) usec, 5000000 (1000byte,0frags) 1047220pps 8377Mb/sec (8377760000bps) errors: 0 Baseline for plain IPv6 forwarding: Result: OK: 4244144(c4243722+d422) usec, 5000000 (1000byte,0frags) 1178093pps 9424Mb/sec (9424744000bps) errors: 0 ==================== Signed-off-by: -
David Lebrun authored
We already use dst_cache in seg6_output, when handling locally generated packets. We extend it in seg6_input, to also handle forwarded packets, and avoid unnecessary fib lookups. Performances for SRH encapsulation before the patch: Result: OK: 5656067(c5655678+d388) usec, 5000000 (1000byte,0frags) 884006pps 7072Mb/sec (7072048000bps) errors: 0 Performances after the patch: Result: OK: 4774543(c4774084+d459) usec, 5000000 (1000byte,0frags) 1047220pps 8377Mb/sec (8377760000bps) errors: 0 Signed-off-by:
David Lebrun <david.lebrun@uclouvain.be> Signed-off-by:
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David Lebrun authored
To insert or encapsulate a packet with an SRH, we need a large enough skb headroom. Currently, we are using pskb_expand_head to inconditionally increase the size of the headroom by the amount needed by the SRH (and IPv6 header). If this reallocation is performed by another CPU than the one that initially allocated the skb, then when the initial CPU kfree the skb, it will enter the __slab_free slowpath, impacting performances. This patch replaces pskb_expand_head with skb_cow_head, that will reallocate the skb head only if the headroom is not large enough. Performances for SRH encapsulation before the patch: Result: OK: 7348320(c7347271+d1048) usec, 5000000 (1000byte,0frags) 680427pps 5443Mb/sec (5443416000bps) errors: 0 Performances after the patch: Result: OK: 5656067(c5655678+d388) usec, 5000000 (1000byte,0frags) 884006pps 7072Mb/sec (7072048000bps) errors: 0 Signed-off-by:
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Geliang Tang authored
Use setup_deferrable_timer() instead of init_timer_deferrable() to simplify the code. Signed-off-by:
Geliang Tang <geliangtang@gmail.com> Signed-off-by:
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David S. Miller authored
Jiri Pirko says: ==================== mlxsw: Query resources from firmware Ido says: Some parts of the driver already use the resource query mechanism, but in other parts we still rely on hard coded values that may change over time. This patchset removes most of these remaining values and queries them from the firmware instead. ==================== Signed-off-by: -
Ido Schimmel authored
As explained in the previous patch, the cell size may change in future devices, so query it from the firmware instead of hard coding it. Signed-off-by:
Ido Schimmel <idosch@mellanox.com> Signed-off-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
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Ido Schimmel authored
The sizes and thresholds of the priority group (PG) buffers are configured in cells, which represent a specific amount of bytes. The cell size can vary in different devices, so it's better to query it from the firmware than hard coding it. Refactor the code dealing with this value into different functions, so that it will be easier to make the conversion in the next patch. Signed-off-by:
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Ido Schimmel authored
Instead of hard coding the size of the shared buffer in the driver, query it from the firmware, as it may change in future devices. Signed-off-by:
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Ido Schimmel authored
We currently hard code the maximum number of ports in the driver, but this may change in future devices, so query it from the firmware instead. Fallback to a maximum of 64 ports in case this number can't be queried. This should only happen in SwitchX-2 for which this number is correct. Signed-off-by:
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Ido Schimmel authored
Instead of hard coding the number of LPM trees in the driver, query it from the firmware, as it may change in future devices. 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: ==================== 40GbE Intel Wired LAN Driver Updates 2017-03-23 This series contains updates to i40e and i40e.txt documentation. Jake provides all the changes in the series which are centered around ntuple filter fixes and additional support. Fixed the current implementation of .set_rxnfc, where we were not reading the mask field for filter entries which was resulting in filters not behaving as expected and not working correctly. When cleaning up after disabling flow director support, ensure that the default input set is correctly reprogrammed. Since the hardware only supports a single input set for all flows of that type, the driver shall only allow the input set to change if there are no other configured filters for that flow type, so add support to detect when we can update the input set for each flow type. Align the driver to other drivers to partition the ring_cookie value into 8bits of VF index, along with 32bits of queue number instead of using the user-def field. Added support to parse the user-def field into a data structure format to allow future extensions of the user-def filed by keeping all the code that read/writes the field into a single location. Added support for flexible payloads passed via ethtool user-def field. We support a single flexible word (2byte) value per protocol type, and we handle the FLX_PIT register using a list of flexible entries so that each flow type may be configured separately. Enabled flow director filters for SCTPv4 packets using the ethtool ntuple interface to enable filters. Updated the documentation on the i40e driver to include the newly added support to ntuple filters. Reduced complexity of a if-continue-else-break section of code by taking advantage of using hlist_for_each_entry_continue() instead. ==================== Signed-off-by: -
David Ahern authored
Fix copy and paste error setting rt_ttl_propagate. Fixes: 5b441ac8 ("mpls: allow TTL propagation to IP packets to be configured") Signed-off-by:
David Ahern <dsa@cumulusnetworks.com> Acked-by:
Robert Shearman <rshearma@brocade.com> Signed-off-by:
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Gao Feng authored
Because sysctl_tcp_adv_win_scale could be changed any time, so there is one race in tcp_win_from_space. For example, 1.sysctl_tcp_adv_win_scale<=0 (sysctl_tcp_adv_win_scale is negative now) 2.space>>(-sysctl_tcp_adv_win_scale) (sysctl_tcp_adv_win_scale is postive now) As a result, tcp_win_from_space returns 0. It is unexpected. Certainly if the compiler put the sysctl_tcp_adv_win_scale into one register firstly, then use the register directly, it would be ok. But we could not depend on the compiler behavior. Signed-off-by:
Gao Feng <fgao@ikuai8.com> Signed-off-by:
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Alexey Dobriyan authored
Converting IPv4 address doesn't need 64-bit arithmetic. Space savings: 10 bytes! add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-10 (-10) function old new delta in_aton 96 86 -10 Signed-off-by:
Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
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Felix Manlunas authored
The PF driver is incorrectly resetting Octeon when the module parameter "fw_type=none" is there. "fw_type=none" means the PF should not load any firmware to the NIC because Octeon is already running preloaded firmware. Fix it by putting an if (fw_type != none) around the reset code. Because the Octeon reset is now conditionally gone, when unloading the driver, conditionally send the RESET_PF command to the firmware who will then free up PF-related data structures. Signed-off-by:
Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by:
Satanand Burla <satananda.burla@cavium.com> Signed-off-by:
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subashab@codeaurora.org authored
Certain system process significant unconnected UDP workload. It would be preferrable to disable UDP early demux for those systems and enable it for TCP only. By disabling UDP demux, we see these slight gains on an ARM64 system- 782 -> 788Mbps unconnected single stream UDPv4 633 -> 654Mbps unconnected UDPv4 different sources The performance impact can change based on CPU architecure and cache sizes. There will not much difference seen if entire UDP hash table is in cache. Both sysctls are enabled by default to preserve existing behavior. v1->v2: Change function pointer instead of adding conditional as suggested by Stephen. v2->v3: Read once in callers to avoid issues due to compiler optimizations. Also update commit message with the tests. v3->v4: Store and use read once result instead of querying pointer again incorrectly. v4->v5: Refactor to avoid errors due to compilation with IPV6={m,n} Signed-off-by:Subash Abhinov Kasiviswanathan <subashab@codeaurora.org> Suggested-by:
Eric Dumazet <edumazet@google.com> Cc: Stephen Hemminger <stephen@networkplumber.org> Cc: Tom Herbert <tom@herbertland.com> Cc: David Miller <davem@davemloft.net> Signed-off-by:
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David S. Miller authored
Florian Fainelli says: ==================== net: systemport: TX/NAPI improvements This patch series builds up on Doug's latest changes done in BCMGENET to reduce the number of spurious interrupts in NAPI, simplify pointer arithmetic and finally tracking of per TX ring statistics to be SMP friendly. ==================== Signed-off-by: -
Florian Fainelli authored
Similar to c298ede2 ("net: bcmgenet: simplify circular pointer arithmetic") we don't need to complex arthimetic since we always have a ring size that is a power of 2. Signed-off-by:
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Florian Fainelli authored
Do something similar to commit d5810ca3 ("net: bcmgenet: clear status to reduce spurious interrupts") and clear interrupts right before servicing them. This reduces the number of interrupts by 10K interrupts/sec for a TX TCP session 1Gbits/sec. Signed-off-by:
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Florian Fainelli authored
bcm_sysport_tx_reclaim_one() is currently summing TX bytes/packets in a way that is not SMP friendly, mutliples CPUs could run bcm_sysport_tx_reclaim_one() independently and still update stats->tx_bytes and stats->tx_packets, cloberring the other CPUs statistics. Fix this by tracking per TX rings the number of bytes, packets, dropped and errors statistics, and provide a bcm_sysport_get_nstats() function which aggregates everything and returns a consistent output. Signed-off-by:
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David S. Miller authored
Florian Fainelli says: ==================== net: phy: Allow splitting MDIO bus/device support This patch series allows building support for MDIO bus controllers which are sometimes usable and necessary in cases where there are no Ethernet PHYs. Changes in v3: - corrected of_mdio compile guards for prototypes vs. stubs - added a missing OF_MDIO dependency for MDIO_BCM_UNIMAC - fixed Kbuild bot reported errors against mdio-bitbang Changes in v2: - implement Russell's feedback - solve the circular dependency in the CONFIG_MDIO_DEVICE + CONFIG_PHYLIB case ==================== Signed-off-by: -
Florian Fainelli authored
Introduce a new configuration symbol: MDIO_DEVICE which allows building the MDIO devices and bus code, without pulling in the entire Ethernet PHY library and devices code. PHYLIB nows select MDIO_DEVICE and the relevant Makefile files are updated to reflect that. When MDIO_DEVICE (MDIO bus/device only) is selected, but not PHYLIB, we have mdio-bus.ko as a loadable module, and it does not have a module_exit() function because the safety of removing a bus class is unclear. When both MDIO_DEVICE and PHYLIB are enabled, we need to assemble everything into a common loadable module: libphy.ko because of nasty circular dependencies between phy.c, phy_device.c and mdio_bus.c which are really tough to untangle. Signed-off-by:
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Florian Fainelli authored
The Broadcom MDIO UniMAC driver uses routines provided by of_mdio.c which is guarded by CONFIG_OF_MDIO. Signed-off-by:
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Florian Fainelli authored
CONFIG_OF_MDIO is actually what triggers the build of drivers/of/of_mdio.c, so providing inline stubs when CONFIG_OF_MDIO=y should be based on that symbol as well. Signed-off-by:
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Jiri Pirko authored
sch_choke is classless qdisc so it does not define cl_ops. Therefore filter_list cannot be ever changed, being NULL all the time. Reason is this check in tc_ctl_tfilter: /* Is it classful? */ cops = q->ops->cl_ops; if (!cops) return -EINVAL; So remove this dead code. Signed-off-by:
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LABBE Corentin authored
Two different set_mac functions exists but stmmac_dwmac4_set_mac() is only used for enabling and never for disabling. So on dwmac4, the MAC RX/TX is never disabled. This patch add a generic function pointer set_mac() to stmmac_ops and replace all call to stmmac_set_mac/stmmac_dwmac4_set_mac by a call to this pointer. Since dwmac4_ops is const, set_mac cannot be modified after, and so dwmac4_ops is duplioacted like dwmac4_dma_ops. Signed-off-by:
Corentin Labbe <clabbe.montjoie@gmail.com> Signed-off-by:
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Geliang Tang authored
Use setup_timer() instead of init_timer() to simplify the code. Signed-off-by:
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David S. Miller authored
Nikolay Aleksandrov says ==================== net: bridge: allow user-space to add ext learned entries This set adds the ability to add externally learned entries from user-space. For symmetry and proper function we need to allow SW entries to take over HW learned ones (similar to how HW can take over SW entries currently) which is needed for our use case (evpn) where we have pure SW ports and HW ports mixed in a single bridge. This does not play well with switchdev devices currently because there's no feedback when the entry is taken over, but this case has never worked anyway and feedback can be easily added when needed. Patch 02 simply allows to use NTF_EXT_LEARNED from user-space, we already have Quagga patches that make use of this functionality. ==================== Signed-off-by: -
Nikolay Aleksandrov authored
The NTF_EXT_LEARNED flag was added for switchdev and externally learned entries, but it can also be used for entries learned via a software in user-space which requires dynamic entries that do not expire. One such case that we have is with quagga and evpn which need dynamic entries but also require to age them themselves. Signed-off-by:
Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Reviewed-by:
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Nikolay Aleksandrov authored
Allow to take over an entry which was previously learned via HW when it shows up from a SW port. This is analogous to how HW takes over SW learned entries already. Suggested-by:
Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by:
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Ido Schimmel authored
We don't use it during development and we can't extend it either, so remove it. Signed-off-by:
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