- 20 Nov, 2016 4 commits
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Alexey Dobriyan authored
1) cast to "int" is unnecessary: u8 will be promoted to int before decrementing, small positive numbers fit into "int", so their values won't be changed during promotion. Once everything is int including loop counters, signedness doesn't matter: 32-bit operations will stay 32-bit operations. But! Someone tried to make this loop smart by making everything of the same type apparently in an attempt to optimise it. Do the optimization, just differently. Do the cast where it matters. :^) 2) frag size is unsigned entity and sum of fragments sizes is also unsigned. Make everything unsigned, leave no MOVSX instruction behind. add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-4 (-4) function old new delta skb_cow_data 835 834 -1 ip_do_fragment 2549 2548 -1 ip6_fragment 3130 3128 -2 Total: Before=154865032, After=154865028, chg -0.00% Signed-off-by:
Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Alexey Dobriyan authored
Length of a netlink attribute may be u16 but lengths of basic attributes are much smaller, so small we can save 16 bytes of .rodata and pocket change inside .text. 16-bit is worse on x86-64 than 8-bit because of operand size override prefix. add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-19 (-19) function old new delta validate_nla 418 417 -1 nla_policy_len 66 64 -2 nla_attr_minlen 32 16 -16 Total: Before=154865051, After=154865032, chg -0.00% Signed-off-by:
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Alexey Dobriyan authored
->nla_len is unsigned entity (it's length after all) and u16, thus it can't overflow when being aligned into int/unsigned int. (nlmsg_next has the same code, but I didn't yet convince myself it is correct to do so). There is pointer arithmetic in this function and offset being unsigned is better: add/remove: 0/0 grow/shrink: 1/64 up/down: 5/-309 (-304) function old new delta nl80211_set_wiphy 1444 1449 +5 team_nl_cmd_options_set 997 995 -2 tcf_em_tree_validate 872 870 -2 switchdev_port_bridge_setlink 352 350 -2 switchdev_port_br_afspec 312 310 -2 rtm_to_fib_config 428 426 -2 qla4xxx_sysfs_ddb_set_param 2193 2191 -2 qla4xxx_iface_set_param 4470 4468 -2 ovs_nla_free_flow_actions 152 150 -2 output_userspace 518 516 -2 ... nl80211_set_reg 654 649 -5 validate_scan_freqs 148 142 -6 validate_linkmsg 288 282 -6 nl80211_parse_connkeys 489 483 -6 nlattr_set 231 224 -7 nf_tables_delsetelem 267 260 -7 do_setlink 3416 3408 -8 netlbl_cipsov4_add_std 1672 1659 -13 nl80211_parse_sched_scan 2902 2888 -14 nl80211_trigger_scan 1738 1720 -18 do_execute_actions 2821 2738 -83 Total: Before=154865355, After=154865051, chg -0.00% Signed-off-by:
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Alexey Dobriyan authored
size_t is way too much for an integer not exceeding 64. Space savings: 10 bytes! add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-10 (-10) function old new delta napi_consume_skb 165 163 -2 __kfree_skb_flush 56 53 -3 __kfree_skb_defer 97 92 -5 Total: Before=154865639, After=154865629, chg -0.00% Signed-off-by:
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- 19 Nov, 2016 6 commits
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git://git.open-mesh.org/linux-mergeDavid S. Miller authored
Simon Wunderlich says: ==================== This feature patchset includes the following changes: - 6 patches adding functionality to detect a WiFi interface under other virtual interfaces, like VLANs. They introduce a cache for the detected the WiFi configuration to avoid RTNL locking in critical sections. Patches have been prepared by Marek Lindner and Sven Eckelmann - Enable automatic module loading for genl requests, by Sven Eckelmann - Fix a potential race condition on interface removal. This is not happening very often in practice, but requires bigger changes to fix, so we are sending this to net-next. By Linus Luessing ==================== Signed-off-by: -
Jarno Rajahalme authored
Remove static function __packet_rcv_vnet(), which only called virtio_net_hdr_from_skb() and BUG()ged out if an error code was returned. Instead, call virtio_net_hdr_from_skb() from the former call sites of __packet_rcv_vnet() and actually use the error handling code that is already there. Signed-off-by:
Jarno Rajahalme <jarno@ovn.org> Signed-off-by:
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Jarno Rajahalme authored
Use the common virtio_net_hdr_to_skb() instead of open coding it. Other call sites were changed by commit fd2a0437, but this one was missed, maybe because it is split in two parts of the source code. Interim comparisons of 'vnet_hdr->gso_type' still work as both the vnet_hdr and skb notion of gso_type is zero when there is no gso. Fixes: fd2a0437 ("virtio_net: introduce virtio_net_hdr_{from,to}_skb") Signed-off-by:
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Jarno Rajahalme authored
virtio_net_hdr_from_skb() clears the memory for the header, so there is no point for the callers to do the same. Signed-off-by:
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Jarno Rajahalme authored
Fix incorrent comment after the final #endif. Signed-off-by:
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Jarno Rajahalme authored
No point storing the return value of virtio_net_hdr_to_skb() or virtio_net_hdr_from_skb() to a variable when the value is used only once as a boolean in an immediately following if statement. Signed-off-by:
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- 18 Nov, 2016 30 commits
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Hariprasad Shenai authored
Allocate resources dynamically for Upper layer driver's (ULD) like cxgbit, iw_cxgb4, cxgb4i and chcr. The resources allocated include Tx queues which are allocated when ULD register with cxgb4 driver and freed while un-registering. The Tx queues which are shared by ULD shall be allocated by first registering driver and un-allocated by last unregistering driver. Signed-off-by:
Atul Gupta <atul.gupta@chelsio.com> Signed-off-by:
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Dan Carpenter authored
We obviously intended a bitwise AND here, not a logical one. Fixes: 8c978d05 ("liquidio CN23XX: Mailbox support") Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
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Woojung Huh authored
Relocate mdix code to phy driver to be called at config_init(). Signed-off-by:
Woojung Huh <woojung.huh@microchip.com> Reviewed-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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David S. Miller authored
Florian Fainelli says: ==================== net: Enable COMPILE_TEST for Marvell & Freescale drivers This patch series allows building the Freescale and Marvell Ethernet network drivers with COMPILE_TEST. Changes in v4: - add proper HAS_DMA to fix build errors on m32r - provide an inline stub for mvebu_mbus_get_dram_win_info - added an additional patch to fix build errors with mv88e6xxx on m32r Changes in v3: - reorder patches to avoid introducing a build warning between commits Changes in v2: - rename register define clash when building for i386 (spotted by LKP) ==================== Signed-off-by: -
Florian Fainelli authored
Some architectures may not define IRQ_DOMAIN (like m32r), fixes undefined references to IRQ_DOMAIN functions. Fixes: dc30c35b ("net: dsa: mv88e6xxx: Implement interrupt support.") Signed-off-by:
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Florian Fainelli authored
All Marvell Ethernet drivers actually build fine with COMPILE_TEST with a few warnings. We need to add a few HAS_DMA dependencies to fix linking failures on problematic architectures like m32r. Signed-off-by:
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Florian Fainelli authored
In preparation for allowing CONFIG_MVNETA_BM to build with COMPILE_TEST, provide an inline stub for mvebu_mbus_get_dram_win_info(). Signed-off-by:
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Florian Fainelli authored
There are only a handful of Freescale Ethernet drivers that don't actually build with COMPILE_TEST: * FEC, for which we would need to define a default register layout if no supported architecture is defined * UCC_GETH which depends on PowerPC cpm.h header (which could be moved to a generic location) * GIANFAR needs to depend on HAS_DMA to fix linking failures on some architectures (like m32r) We need to fix an unmet dependency to get there though: warning: (FSL_XGMAC_MDIO) selects OF_MDIO which has unmet direct dependencies (OF && PHYLIB) which would result in CONFIG_OF_MDIO=[ym] without CONFIG_OF to be set. Signed-off-by:
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Florian Fainelli authored
FS is a global symbol used by the x86 32-bit architecture, fixes builds re-definitions: >> drivers/net/ethernet/freescale/gianfar_ptp.c:75:0: warning: "FS" >> redefined #define FS (1<<28) /* FIPER start indication */ In file included from arch/x86/include/uapi/asm/ptrace.h:5:0, from arch/x86/include/asm/ptrace.h:6, from arch/x86/include/asm/math_emu.h:4, from arch/x86/include/asm/processor.h:11, from include/linux/mutex.h:19, from include/linux/kernfs.h:13, from include/linux/sysfs.h:15, from include/linux/kobject.h:21, from include/linux/device.h:17, from drivers/net/ethernet/freescale/gianfar_ptp.c:23: arch/x86/include/uapi/asm/ptrace-abi.h:15:0: note: this is the location of the previous definition #define FS 9 Reported-by:kbuild test robot <lkp@intel.com> Signed-off-by:
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Lendacky, Thomas authored
Update the connection type enumeration for backplane mode and return an error when there is a mismatch between the mode and the connection type. Signed-off-by:
Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by:
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David S. Miller authored
Allan W. Nielsen says: ==================== Adding PHY-Tunables and downshift support (This is a re-post of the v3 patch set with a new cover letter - I was not aware that the cover letters was used a commit comments in merge commits). This series add support for PHY tunables, and uses this facility to configure downshifting. The downshifting mechanism is implemented for MSCC phys. This series tries to address the comments provided back in mid October when this feature was posted along with fast-link-failure. Fast-link-failure has been separated out, but we would like to pick continue on that if/when we agree on how the phy-tunables and downshifting should be done. The proposed generic interface is similar to ETHTOOL_GTUNABLE/ETHTOOL_STUNABLE, it uses the same type (ethtool_tunable/tunable_type_id) but a new enum (phy_tunable_id) is added to reflect the PHY tunable. The implementation just call the newly added function pointers in get_tunable/set_tunable phy_device structure. To configure downshifting, the ethtool_tunable structure is used. 'id' must be set to 'ETHTOOL_PHY_DOWNSHIFT', 'type_id' must be set to 'ETHTOOL_TUNABLE_U8' and 'data' value configure the amount of downshift re-tries. If configured to DOWNSHIFT_DEV_DISABLE, then downshift is disabled If configured to DOWNSHIFT_DEV_DEFAULT_COUNT, then it is up to the device to choose a device-specific re-try count. Tested on Beaglebone Black with VSC 8531 PHY. Change set: v0: - Link Speed downshift and Fast Link failure-2 features coded by using Device tree. v1: - Split the Downshift and FLF2 features in different set of patches. - Removed DT access and implemented IOCTL access suggested by Andrew. - Added function pointers in get_tunable/set_tunable phy_device structure v2: - Added trace message with a hist is printed when downshifting clould not be eanbled with the requested count - (ethtool) Syntax is changed from "--set-phy-tunable downshift on|off|%d" to "--set-phy-tunable [downshift on|off [count N]]" - as requested by Andrew. v3: - Fixed Spelling in "net: phy: Add downshift get/set support in Microsemi PHYs driver" ==================== Signed-off-by: -
Raju Lakkaraju authored
Implements the phy tunable function pointers and implement downshift functionality for MSCC PHYs. Signed-off-by:
Raju Lakkaraju <Raju.Lakkaraju@microsemi.com> Reviewed-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
Allan W. Nielsen <allan.nielsen@microsemi.com> Signed-off-by:
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Raju Lakkaraju authored
Adding validation support for the ETHTOOL_PHY_DOWNSHIFT. Functional implementation needs to be done in the individual PHY drivers. Signed-off-by:
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Raju Lakkaraju authored
For operation in cabling environments that are incompatible with 1000BASE-T, PHY device may provide an automatic link speed downshift operation. When enabled, the device automatically changes its 1000BASE-T auto-negotiation to the next slower speed after a configured number of failed attempts at 1000BASE-T. This feature is useful in setting up in networks using older cable installations that include only pairs A and B, and not pairs C and D. Signed-off-by:
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Raju Lakkaraju authored
Adding get_tunable/set_tunable function pointer to the phy_driver structure, and uses these function pointers to implement the ETHTOOL_PHY_GTUNABLE/ETHTOOL_PHY_STUNABLE ioctls. Signed-off-by:
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Raju Lakkaraju authored
Defines a generic API to get/set phy tunables. The API is using the existing ethtool_tunable/tunable_type_id types which is already being used for mac level tunables. Signed-off-by:
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David S. Miller authored
Saeed Mahameed says: ==================== Mellanox 100G mlx5 update 2016-11-15 This series contains four humble mlx5 features. From Gal, - Add the support for PCIe statistics and expose them in ethtool From Huy, - Add the support for port module events reporting and statistics - Add the support for driver version setting into FW (for display purposes only) From Mohamad, - Extended the command interface cache flexibility This series was generated against commit 6a02f5eb ("Merge branch 'mlxsw-i2c") V2: - Changed plain "unsigned" to "unsigned int" ==================== Signed-off-by:
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Gal Pressman authored
This patch exposes two groups of PCIe counters: - Performance counters. - Timers and states counters. Queried with ethtool -S <devname>. Signed-off-by:
Gal Pressman <galp@mellanox.com> Signed-off-by:
Saeed Mahameed <saeedm@mellanox.com> Signed-off-by:
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Gal Pressman authored
Add the needed infrastructure for future use of MPCNT register. Signed-off-by:
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Huy Nguyen authored
If driver_version capability bit is enabled, set driver version to firmware after the init HCA command, for display purposes. Example of driver version: "Linux,mlx5_core,3.0-1" Signed-off-by:
Huy Nguyen <huyn@mellanox.com> Signed-off-by:
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Saeed Mahameed authored
Add driver_version capability bit is enabled, and set driver version command in mlx5_ifc firmware header. The only purpose of this command is to store a driver version/OS string in FW to be reported and displayed in various management systems, such as IPMI/BMC. Signed-off-by:
Leon Romanovsky <leonro@mellanox.com> Signed-off-by:
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Huy Nguyen authored
Add port module event counters to ethtool -S command Signed-off-by:
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Huy Nguyen authored
For each asynchronous port module event: 1. print with ratelimit to the dmesg log 2. increment the corresponding event counter Signed-off-by:
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Huy Nguyen authored
Add hardware structures and constants definitions needed for module events support. Signed-off-by:
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Mohamad Haj Yahia authored
Add more cache command size sets and more entries for each set based on the current commands set different sizes and commands frequency. Fixes: e126ba97 ('mlx5: Add driver for Mellanox Connect-IB adapters') Signed-off-by:
Mohamad Haj Yahia <mohamad@mellanox.com> Signed-off-by:
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David S. Miller authored
Edward Cree says: ==================== sfc: Firmware-Assisted TSO version 2 The firmware on 8000 series SFC NICs supports a new TSO API ("FATSOv2"), and 7000 series NICs will also support this in an imminent release. This series adds driver support for this TSO implementation. The series also removes SWTSO, as it's now equivalent to GSO. This does not actually remove very much code, because SWTSO was grotesquely intertwingled with FATSOv1, which will also be removed once 7000 series supports FATSOv2. ==================== Signed-off-by: -
Edward Cree authored
It gives no advantage over GSO now that xmit_more exists. If we find ourselves unable to handle a TSO skb (because our TXQ doesn't have a TSOv2 context and the NIC doesn't support TSOv1), hand it back to GSO. Also do that if the TSO handler fails with EINVAL for any other reason. As Falcon-architecture NICs don't support any firmware-assisted TSO, they no longer advertise TSO feature flags at all. Signed-off-by:
Edward Cree <ecree@solarflare.com> Signed-off-by:
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Edward Cree authored
If we fail to init the TXQ because of insufficient TSOv2 contexts, try again with TSOv2 disabled. Signed-off-by:
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Bert Kenward authored
Add support for FATSOv2 to the driver. FATSOv2 offloads far more of the task of TCP segmentation to the firmware, such that we now just pass a single super-packet to the NIC. This means TSO has a great deal in common with a normal DMA transmit, apart from adding a couple of option descriptors. NIC-specific checks have been moved off the fast path and in to initialisation where possible. This also moves FATSOv1/SWTSO to a new file (tx_tso.c). The end of transmit and some error handling is now outside TSO, since it is common with other code. Signed-off-by:
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Edward Cree authored
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