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path: root/drivers/net/ethernet/intel/i40evf
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2015-04-14i40e/i40evf: Save WR_CSR_PROT field from DEV/FUNC capabilitiesKevin Scott1-0/+1
Store the 8 bytes of the WR_CSR_PROT field returned as part of the get device/function capabilities AQ command. Change-ID: Ifcaeea2ff29885fa769e4f384c7db88a25e8afd0 Signed-off-by: Kevin Scott <kevin.c.scott@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-04-14i40evf: remove aq_pendingMitch Williams3-38/+12
The aq_pending field in the adapter structure is actually redundant with the current_op field. Remove the aq_pending field and expunge all traces of it from the official record. This simplifies the code significantly, especially in the virtual channel completion routine. Change-ID: Ib2957c8c19882bd0cecc6fcd133912c24b46a1ff Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-04-14i40evf: fix bad indentationMitch Williams1-1/+1
Not sure how this slipped through. Cosmetic change only. Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-04-09i40e/i40evf: Use dma_rmb where appropriateAlexander Duyck1-2/+2
Update i40e and i40evf to use dma_rmb. This should improve performance by decreasing the barrier overhead on strong ordered architectures. Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com> Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-03i40evf: Refactor VF RSS codeAnjali Singhai Jain1-32/+11
Refactor VF RSS code to allow RSS on a single queue and eliminate the need for the next_queue function. Change-ID: I9253bad96b7f542ee7036e15636db0e5d58d8ef2 Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-04-03i40evf: protect VLAN filter listMitch Williams1-2/+22
The MAC filter list is protected by a critical task bit, and the VLAN list should be protected as well. This prevents list corruption if the watchdog happens to run at the same time as a VLAN filter is being added or deleted. Change-ID: Ia4867cebbbb046a1f38012771b288a634ca5882b Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-04-03i40e/i40evf: Set Ethernet protocol correctly when Tx VLAN offloads are disabledGreg Rose1-0/+14
If transmit VLAN HW offloads are disabled then the network stack sends up an skb with the protocol set to 8021q. In that case to get the correct checksum offloads we have to reset the skb protocol to the encapsulated ethertype. Change-ID: I903d78533de09b1c5d3ec695ee1990dd0fa5dd0d Signed-off-by: Greg Rose <gregory.v.rose@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-04-03i40e/i40evf: fix bug when skb allocation failsJesse Brandeburg1-1/+4
If the skb allocation fails we should not continue using the skb pointer. Breaking out at the point of failure means that at the next RX interrupt the driver will try the allocation again. Change-ID: Iefaad69856ced7418bfd92afe55322676341f82e Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-04-03i40evf: Fix Outer UDP RX checksum codeAnjali Singhai Jain1-11/+13
Inner protocol being UDP should not stop us from verifying Outer UDP checksum correctness. If the Outer protocol is not UDP (NVGRE) we should not be doing a UDP checksum check. If the packet has zero checksum, skip checksum check. Change-ID: Ie7f153feb276a59f66a54a0938901b2c0a8100fa Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-03-27i40evf: add FW version to ethtool infoMitch Williams1-1/+1
Customers reported that the firmware version information from i40evf is unlike that of ixgbevf and was causing problems with their scripts. To resolve this, populate the field to align with ixgbevf. Change-ID: I9f4e24f6a76cd819bbe07087aab2b74f715ec103 Reported-by: Sourav Chatterjee <sourav.chatterjee@intel.com> Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-03-27i40evf: resequence close operationsMitch Williams1-7/+3
Call the netdev carrier off and TX disable functions first, before other shutdown operations. This stops the stack from hitting us with transmits while we're shutting down. Additionally, disable NAPI before disabling interrupts, or the interrupt might get re-enabled inappropriately. Finally, remove the call to netif_tx_stop_all_queues, as it is redundant - the call to netif_tx_disable already did the same thing. Change-ID: I8b2dd25231b82817746cc256234a5eeeb4abaccc Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-03-27i40evf: delay releasing ringsMitch Williams3-13/+14
When the VF interface is closed, we cannot immediately free our rings and RX buffers, because the hardware hasn't yet stopped accessing this memory. This shows up as a panic or memory corruption when the device is brought down while under heavy stress. To fix this, delay releasing resources until we receive acknowledgment from the PF driver that the rings have indeed been stopped. Because of this delay, we also need to check to make sure that all of our admin queue requests have been handled before allowing the device to be opened. Change-ID: I44edd35529ce2fa2a9512437a3a8e6f14ed8ed63 Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-03-27i40e/i40evf: implement KR2 supportJesse Brandeburg2-1/+3
The new devices need a new device ID some other defines to handle the new 20G speed for KR2. Change-ID: I03f717e364afe59657e8c9ce5ffaad856b4b21df Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Piotr Raczynski <piotr.raczynski@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-03-09i40e/i40evf: Bump i40e/i40evf versionCatherine Sullivan1-1/+1
Bump PF version to 1.2.37 and VF version to 1.2.25 Change-ID: I0287a750408250dc055c03e1f744fd5f0caefd68 Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-03-09i40e/i40evf: fix accidental write to ITR registersJesse Brandeburg2-0/+4
Fix a bug introduced in the force writeback code, where the interrupt rate was set to 0 (maximum) by accident. The driver must correctly set the NOITR fields to avoid ITR update as a side effect of triggering the software interrupt. Change-ID: I290851ae04ef3811c43aab5ee33242029f26c1a3 Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-03-09i40vf: don't stop me nowMitch Williams1-5/+6
If a reset occurs when the netdev is closed, the reset task will hang in napi_disable, causing deadlocks and general grumpiness. Check to make sure the device is actually running before stopping everything. This allows the reset task to complete and have a real good time. Change-ID: Iaaea84acbcb9b3810c216b14c3326e4287b75b58 Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-03-08ethernet: codespell comment spelling fixesJoe Perches1-2/+2
To test a checkpatch spelling patch, I ran codespell against drivers/net/ethernet/. $ git ls-files drivers/net/ethernet/ | \ while read file ; do \ codespell -w $file; \ done I removed a false positive in e1000_hw.h Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-07i40e/i40evf: Bump versionSravanthi Tangeda1-1/+1
Bump i40e to 1.2.12 and i40evf to 1.2.6. Change-ID: I641871da3a9abd396b28eda5744a4d68493c1400 Signed-off-by: Sravanthi Tangeda <sravanthi.tangeda@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-03-07i40e/i40evf: enable prefetch of Tx descriptors during cleanupJesse Brandeburg1-0/+2
Performance can be improved a bit by imitating ixgbe and using prefetch to get us the next Tx descriptor. Change-ID: Ice7ffd4cd0ce87c35295059bdb7972a7f53723aa Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-03-07i40e/i40evf: Simplify tunnel selection logicAnjali Singhai Jain1-2/+10
Use l4_tunnel type generically to keep code flow simple. Change-ID: Ic52287e3b1ca4204e6b6e13431890c1a6ae9c422 Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-03-07i40e/i40evf: Refactor i40e_debug_aq and make some functions staticShannon Nelson2-23/+23
A sparse complaint in i40e_debug_aq in a funky buffer write goes away by straightening out the code out to something less convoluted. Also fix some other sparse warnings while we are at it, making some functions static and using NULL instead of 0. Change-ID: I93907534fe1f1f675830774b3d14ecf1c6ffc9a0 Signed-off-by: Shannon Nelson <shannon.nelson@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-03-05i40e/i40evf: Version bumpSravanthi Tangeda1-1/+1
Bump i40e to 1.2.11 and i40evf to 1.2.5 Change-ID: Ie13375941606b0a027e5b5dbc235f5f5f03b75c8 Signed-off-by: Sravanthi Tangeda <sravanthi.tangeda@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-03-05i40e/i40evf: Clean up some formatting and other thingsJesse Brandeburg3-4/+1
Fix some double blank lines and un-split a function declaration that all fits on one line. Also make i40e_get_priv_flags static. Change-ID: I11b5d25d1153a06b286d0d2f5d916d7727c58e4a Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Neerav Parikh <neerav.parikh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-03-05i40e/i40evf: grab NVM devstarter version not image versionShannon Nelson1-1/+1
0x2A is the NVM version so it has useful data but it is per image version every image can have a different one. 0x18 is the dev starter version which all the images for release will have the same version. Of the two 0x18 is more useful and is what should be displayed. Change-ID: Idf493da13a42ab211e2de0bef287f5de51033cca Signed-off-by: Shannon Nelson <shannon.nelson@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-03-03Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2-36/+108
Conflicts: drivers/net/ethernet/rocker/rocker.c The rocker commit was two overlapping changes, one to rename the ->vport member to ->pport, and another making the bitmask expression use '1ULL' instead of plain '1'. Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-03i40e/i40evf: Bump versionsSravanthi Tangeda1-1/+1
Bump i40e to 1.2.10 and i40evf to 1.2.4 Change-ID: I48aa64df05fcc8356e7026f3a9e69ecf78d0c785 Signed-off-by: Sravanthi Tangeda <sravanthi.tangeda@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-03-03i40evf: ethtool RSS fixesMitch Williams1-6/+8
Add an extra check to make sure that the indirection table pointer is valid before dereferencing it. Change-ID: I698adbf3daff03081d01f489dc95a9f1ad8b12f1 Reported-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-03-03i40e/i40evf: Add missing packet types for VXLAN encapsulated packet typesAnjali Singhai Jain1-4/+4
We were missing a few packet types for VXLAN offload. This patch fixes that. Change-ID: I4b23aa0b08e40ed49d0df6c49a5ed9f2009b44ce Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-03-03i40e/i40evf: print FW build number in version stringShannon Nelson1-0/+1
Include the FW build number in the formatted FW version string. In order to fit within ethtool's 32 character limit, the etrack's unused high order bits are trimmed as is the leading 0 for the NVM version. This leaves us with 2 character left for if/when the etrack id goes to 5 hex chars and the NVM major number goes to 2 chars. Change-ID: Icb004c4b9b14a2f54dd200b467fcc1d7b9297308 Signed-off-by: Shannon Nelson <shannon.nelson@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-02-26i40evf: TCP/IPv6 over Vxlan Tx checksum offload fixAnjali Singhai1-12/+12
We were checking the outer Protocol flags and deciding the flow for inner header. This patch fixes that. This fixes the Tx checksum offload for TCP/IPv6 over vxlan. Change-ID: I837aaea921d34f71b24c2bc32aaadea5001ddf78 Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-02-26i40e: fix race in hang checkJesse Brandeburg1-24/+30
The driver was having some issues with false Tx hang detection. This makes the driver a little more direct with the checks for progress forward by directly checking the head write back address and tail register when determining progress. This avoids Tx hangs where the software gets behind, because we are directly checking hardware state when determining hang state. Change-ID: I774f0e861c9e8ab5ccb213634100fe15440ae24a Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-02-26i40e: Fix TSO with more than 8 frags per segment issueAnjali Singhai2-0/+66
The hardware has some limitations the driver needs to adhere to, that we found in extended testing. 1) no more than 8 descriptors per packet on the wire 2) no header can span more than 3 descriptors If one of these events occurs, the hardware will generate an internal error and freeze the Tx queue. This patch linearizes the skb to avoid these situations. Change-ID: I37dab7d3966e14895a9663ec4d0aaa8eb0d9e115 Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-02-24i40e/i40evf: Update driver versionsSravanthi Tangeda1-2/+2
Bump i40e to 1.2.9 and i40evf 1.2.3 Also update the copyright year. Change-ID: I345d777e94abd0acffe6a28793f675d251a86299 Signed-off-by: Sravanthi Tangeda <sravanthi.tangeda@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-02-24i40evf: Add more info to interrupt vector namesCarolyn Wyborny1-1/+2
This patch adds the netdev name to the VF misc vector name. Without this patch, all the interrupts show the same info, so it difficult to distinguish them. Change-ID: I247828697e1373ecfb5f8dc1bc9618e98a7f4942 Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-02-24i40evf: allow enabling of debug prints via ethtoolAshish Shah1-2/+4
Copy setting from ethtool to the HW specific struct to actually enable prints. Change print from i40e to i40evf to differentiate drivers in bare metal scenarios. Also update the copyright year. Change-ID: I06fee26247299a08f2e1c70fc811a9ea0931c4dd Signed-off-by: Ashish Shah <ashish.n.shah@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-02-24i40e/i40evf: Use advertised speed settings in ethtool and refactor get_settingsCatherine Sullivan1-1/+2
Add a requested speed variable to the link_status struct to store the last speeds we requested from the firmware (the speeds the FW will be advertising with if autoneg is enabled). Use the advertised speed settings in get_settings in ethtool now that we have it. Also set the requested speed settings in set_settings in ethtool as they are requested and initialize them in probe based on what the firmware remembers as the last requested speeds. To accommodate some longer lines in this new code, and improve readability I have added two functions i40e_get_settings_link_up and i40e_get_settings_link_down which get_settings now calls first. It then does all of the settings that happen regardless of link state. Some PHY types that supported the same settings were also combined. Also update the copyright year. Change-ID: Ica0c5ac81b6069ea6a7406fce7482f7816d4455c Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-02-24i40e/i40evf: Fix output of i40e_debug_aq() for big endian machinesPaul M Stillwell Jr1-11/+18
The function i40e_debug_aq() prints information helpful in debugging admin queue commands, but it doesn't do so correctly on big endian machines. This patch adds the appropriate LExx_TO_CPU wrappers for big endian architectures. Also update the copyright year. Change-ID: I4b2dc229ed5bf6dfe35632a58cddf53c21aff4b0 Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-02-23i40evf: don't wait foreverMitch Williams1-2/+13
Under rare circumstances, after a reset, set_rx_mode might get called while the watchdog is running, which will cause a deadlock on the critical section lock. To correct this, add a counter and give up trying to get the lock after fifty tries. Log a message if this happens but don't take any other action. Because this happens after a reset, all of the Rx filters are still in place and the device won't lose connectivity. We can also get stuck during shutdown, if the PF has stopped communicating with us, or if a reset is occurring. If we can't get the lock after a reasonable amount of time, just error out. Something else bad is happening anyway, so adding this filter is the least of our concern right now. Change-ID: I159731e2a82a06b389ee31b34ce336548e05baa0 Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-02-23i40evf: refactor resetMitch Williams1-10/+31
A recent change to the shutdown flow messed up the reset flow. Since i40evf_down now holds the critical section lock, we cannot call it from the reset handler, which also holds the lock. To do so causes a deadlock accompanied by wailing and gnashing of teeth. This is easily triggered by running an ethtool self-test on the PF device. Instead, we move the relevant portions of i40evf_down into the reset handler and bend them to our will. Additionally, we can optimize the reinit path by not deleting the MAC and VLAN filters and then adding them back again. Instead, we just set the 'add' flag and let the watchdog resynchronize the filter list with the PF driver. We also reword a few messages to make them more consistent with the rest of the driver. Change-ID: I03dd92ae736f7719fca3564b12a2cf9b98c6cb18 Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-02-23i40evf: disable NAPI polling soonerMitch Williams1-2/+1
When closing the interface, disable NAPI polling before any other activities. This fixes an occasional panic during close caused by the driver trying to delete and clean rings at the same time. Change-ID: Ib4d427b13d310258ea85b248d535da70ecf0c1e9 Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-02-23i40e/i40evf: Bump Driver VersionsSravanthi Tangeda1-1/+1
Bump i40e to 1.2.8 and i40evf to 1.2.2 Change-ID: I64f47c3367ea8ff2a53068e895d7a1f60726c871 Signed-off-by: Sravanthi Tangeda <sravanthi.tangeda@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-02-23i40e/i40evf: Remove unused variable an_enable and function update_link_infoCatherine Sullivan1-1/+0
An_enable was never used only set so lets remove it. The function update_link_info only did two things, call get_link_info and set an_enabled. Therefore we should also remove update_link_info and change all references to it to get_link_info. Change-ID: Ie3022680fa7a94bfd495a4f5fc76a73701d85569 Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-02-23i40e/i40evf: i40e_register.h updatesAnjali Singhai Jain1-25/+25
Some registers have been removed so take them out and stop updating and looking at them. Change-ID: I33da922c8de993a94dd8b8d8a2ae2146b8ca1a27 Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-02-23i40e/i40evf: restrict VC opcodes to their initial valuesNicholas Nunley1-22/+20
Until the time a more robust versioning scheme is needed/implemented all established virtual channel opcode values should remain consistent between updates to the opcode enum. This patch repositions I40E_VIRTCHNL_OP_CONFIG_RSS to the end of the enum. In its current position this opcode displaces the initial value of I40E_VIRTCHNL_OP_EVENT and will cause PF/VF compatibility issues. Going forward the expectation is either: a) All future opcode additions will be added as the last element of the enum. Once VF drivers start making use of the new commands the virtual channel version will need to be incremented and drivers will need to implement a simple version check whereby VF drivers can only load on PFs with a >= version. b) or, if needed, design and implement a more complicated API negotiation capability. In either case PF drivers should always maintain backwards compatibility with earlier VF driver versions. Change-ID: Ie245daa09a231b6680ed793d648bdcc76caefe58 Signed-off-by: Nicholas Nunley <nicholas.d.nunley@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-02-23i40e/i40evf: Refactor the receive routinesMitch Williams3-105/+315
Split the receive hot path code into two, one for packet split and one for single buffer. This improves receive performance since we only need to check if the ring is in packet split mode once per NAPI poll time, not several times per packet. The single buffer code is further improved by the removal of a bunch of code and several variables that are not needed. On a receive-oriented test this can improve single-threaded throughput. Also refactor the packet split receive path to use a fixed buffer for headers, like ixgbe does. This vastly reduces the number of DMA mappings and unmappings we need to do, allowing for much better performance in the presence of an IOMMU. Lastly, correct packet split descriptor types now that we are actually using them. Change-ID: I3a194a93af3d2c31e77ff17644ac7376da6f3e4b Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-02-09i40e: Fix for stats init function call in Rx setupCarolyn Wyborny1-1/+1
This patch fixes indentation issue and error found in argument reported by static analysis. Without this patch, sparse and other static analysis errors will be found. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Reported-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-09i40e/i40evf: Add call to u64_stats_init to initCarolyn Wyborny1-0/+2
This patch adds a call to u64_stats_init to Rx setup. This done in order to avoid lockdep errors with seqcount on newer kernels. Change-ID: Ia8ba8f0bcbd1c0e926f97d70aeee4ce4fd055e93 Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-02-09i40evf: Force Tx writeback on ITRAnjali Singhai Jain2-2/+37
This patch forces Tx descriptor writebacks on ITR by kicking off the SWINT interrupt when we notice that there are non-cache-aligned Tx descriptors waiting in the ring while interrupts are disabled under NAPI. Change-ID: dd6d9675629bf266c7515ad7a201394618c35444 Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-02-08i40evf: stop the watchdog for shutdownMitch Williams1-0/+6
Stop the watchdog during shutdown. Failing to do this causes a log full of admin queue errors and the occasional hang when the system is shut down. Change-ID: Ib2fd11213cca2fa589eb68577e86b1000c23c250 Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-02-08i40evf: ignore bogus messages from FWMitch Williams1-1/+1
Occasionally on shutdown, the FW will hand us a bunch of messages filled with zeros, which can cause us to spin trying to handle them. Just ignore these and get on with shutting down. Change-ID: I347e9648f7153ad5a7b7e0847b87f7aad5f3e0da Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Tested-by: Jim Young <james.m.young@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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