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path: root/drivers/net/ethernet/intel/igb
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2018-08-07igb: e1000_phy: Mark expected switch fall-throughGustavo A. R. Silva1-0/+1
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Addresses-Coverity-ID: 114800 ("Missing break in switch") Signed-off-by: Gustavo A. R. Silva <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-08-07igb: e1000_82575: Mark expected switch fall-throughGustavo A. R. Silva1-0/+1
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Addresses-Coverity-ID: 114799 ("Missing break in switch") Signed-off-by: Gustavo A. R. Silva <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-08-07igb_main: Mark expected switch fall-throughsGustavo A. R. Silva1-0/+2
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Addresses-Coverity-ID: 200521 ("Missing break in switch") Addresses-Coverity-ID: 114797 ("Missing break in switch") Signed-off-by: Gustavo A. R. Silva <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-08-06igb: Remove unnecessary include of <linux/pci-aspm.h>Bjorn Helgaas1-1/+0
The igb driver doesn't need anything provided by pci-aspm.h, so remove the unnecessary include of it. Signed-off-by: Bjorn Helgaas <[email protected]> Reviewed-by: Sinan Kaya <[email protected]> Acked-by: Alexander Duyck <[email protected]> Acked-by: Jeff Kirsher <[email protected]>
2018-07-26igb: Use dma_wmb() instead of wmb() before doorbell writesVenkatesh Srinivas1-2/+2
igb writes to doorbells to post transmit and receive descriptors; after writing descriptors to memory but before writing to doorbells, use dma_wmb() rather than wmb(). wmb() is more heavyweight than necessary before doorbell writes. On x86, this avoids SFENCEs before doorbell writes in both the tx and rx refill paths. Signed-off-by: Venkatesh Srinivas <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-07-26igb: Remove superfluous reset to PHY and page 0 selectionChristian Grönke1-12/+0
This patch reverts two previous applied patches to fix an issue that appeared when using SGMII based SFP modules. In the current state the driver will try to reset the PHY before obtaining the phy_addr of the SGMII attached PHY. That leads to an error in e1000_write_phy_reg_sgmii_82575. Causing the initialization to fail: igb: Intel(R) Gigabit Ethernet Network Driver - version 5.4.0-k igb: Copyright (c) 2007-2014 Intel Corporation. igb: probe of ????:??:??.? failed with error -3 The patches being reverted are: commit 182785335447957409282ca745aa5bc3968facee Author: Aaron Sierra <[email protected]> Date: Tue Nov 29 10:03:56 2016 -0600 igb: reset the PHY before reading the PHY ID commit 440aeca4b9858248d8f16d724d9fa87a4f65fa33 Author: Matwey V Kornilov <[email protected]> Date: Thu Nov 24 13:32:48 2016 +0300 igb: Explicitly select page 0 at initialization The first reverted patch directly causes the problem mentioned above. In case of SGMII the phy_addr is not known at this point and will only be obtained by 'igb_get_phy_id_82575' further down in the code. The second removed patch selects forces selection of page 0 in the PHY. Something that the reset tries to address as well. As pointed out by Alexander Duzck, the patch below fixes the same issue but in the proper location: commit 4e684f59d760a2c7c716bb60190783546e2d08a1 Author: Chris J Arges <[email protected]> Date: Wed Nov 2 09:13:42 2016 -0500 igb: Workaround for igb i210 firmware issue Reverts: 440aeca4b9858248d8f16d724d9fa87a4f65fa33. Reverts: 182785335447957409282ca745aa5bc3968facee. Signed-off-by: Christian Grönke <[email protected]> Reviewed-by: Alexander Duyck <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-07-04igb: Add support for ETF offloadJesus Sanchez-Palencia3-17/+138
Implement HW offload support for SO_TXTIME through igb's Launchtime feature. This is done by extending igb_setup_tc() so it supports TC_SETUP_QDISC_ETF and configuring i210 so time based transmit arbitration is enabled. The FQTSS transmission mode added before is extended so strict priority (SP) queues wait for stream reservation (SR) ones. igb_config_tx_modes() is extended so it can support enabling/disabling Launchtime following the previous approach used for the credit-based shaper (CBS). As the previous flow, FQTSS transmission mode is enabled automatically by the driver once Launchtime (or CBS, as before) is enabled. Similarly, it's automatically disabled when the feature is disabled for the last queue that had it setup on. The driver just consumes the transmit times from the skbuffs directly, so no special handling is done in case an 'invalid' time is provided. We assume this has been handled by the ETF qdisc already. Signed-off-by: Jesus Sanchez-Palencia <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-07-04igb: Only call skb_tx_timestamp after descriptors are readyJesus Sanchez-Palencia1-2/+2
Currently, skb_tx_timestamp() is being called before the Tx descriptors are prepared in igb_xmit_frame_ring(), which happens during either the igb_tso() or igb_tx_csum() calls. Given that now the skb->tstamp might be used to carry the timestamp for SO_TXTIME, we must only call skb_tx_timestamp() after the information has been copied into the Tx descriptors. Signed-off-by: Jesus Sanchez-Palencia <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-07-04igb: Refactor igb_offload_cbs()Jesus Sanchez-Palencia1-9/+14
Split code into a separate function (igb_offload_apply()) that will be used by ETF offload implementation. Signed-off-by: Jesus Sanchez-Palencia <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-07-04igb: Only change Tx arbitration when CBS is onJesus Sanchez-Palencia1-16/+33
Currently the data transmission arbitration algorithm - DataTranARB field on TQAVCTRL reg - is always set to CBS when the Tx mode is changed from legacy to 'Qav' mode. Make that configuration a bit more granular in preparation for the upcoming Launchtime enabling patches, since CBS and Launchtime can be enabled separately. That is achieved by moving the DataTranARB setup to igb_config_tx_modes() instead. Similarly, when disabling CBS we must check if it has been disabled for all queues, and clear the DataTranARB accordingly. Signed-off-by: Jesus Sanchez-Palencia <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-07-04igb: Refactor igb_configure_cbs()Jesus Sanchez-Palencia1-32/+28
Make this function retrieve what it needs from the Tx ring being addressed since it already relies on what had been saved on it before. Also, since this function will be used by the upcoming Launchtime patches rename it to better reflect its intention. Note that Launchtime is not part of what 802.1Qav specifies, but the i210 datasheet refers to this set of functionality as "Qav Transmission Mode". Here we also perform a tiny refactor at is_any_cbs_enabled(), and add further documentation to igb_setup_tx_mode(). Signed-off-by: Jesus Sanchez-Palencia <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-06-26net: sched: pass extack pointer to block binds and cb registrationJohn Hurley1-1/+1
Pass the extact struct from a tc qdisc add to the block bind function and, in turn, to the setup_tc ndo of binding device via the tc_block_offload struct. Pass this back to any block callback registrations to allow netlink logging of fails in the bind process. Signed-off-by: John Hurley <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]> Acked-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-06-25cls_flower: fix error values for commands not supported by driversJiri Pirko1-1/+1
-EOPNOTSUPP is the error value that should be reported if a flower command is not supported by a driver. Fix it in couple of Intel drivers. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-06-12treewide: Use array_size() in vmalloc()Kees Cook1-4/+4
The vmalloc() function has no 2-factor argument form, so multiplication factors need to be wrapped in array_size(). This patch replaces cases of: vmalloc(a * b) with: vmalloc(array_size(a, b)) as well as handling cases of: vmalloc(a * b * c) with: vmalloc(array3_size(a, b, c)) This does, however, attempt to ignore constant size factors like: vmalloc(4 * 1024) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( vmalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | vmalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( vmalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | vmalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | vmalloc( - sizeof(char) * (COUNT) + COUNT , ...) | vmalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | vmalloc( - sizeof(u8) * COUNT + COUNT , ...) | vmalloc( - sizeof(__u8) * COUNT + COUNT , ...) | vmalloc( - sizeof(char) * COUNT + COUNT , ...) | vmalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( vmalloc( - sizeof(TYPE) * (COUNT_ID) + array_size(COUNT_ID, sizeof(TYPE)) , ...) | vmalloc( - sizeof(TYPE) * COUNT_ID + array_size(COUNT_ID, sizeof(TYPE)) , ...) | vmalloc( - sizeof(TYPE) * (COUNT_CONST) + array_size(COUNT_CONST, sizeof(TYPE)) , ...) | vmalloc( - sizeof(TYPE) * COUNT_CONST + array_size(COUNT_CONST, sizeof(TYPE)) , ...) | vmalloc( - sizeof(THING) * (COUNT_ID) + array_size(COUNT_ID, sizeof(THING)) , ...) | vmalloc( - sizeof(THING) * COUNT_ID + array_size(COUNT_ID, sizeof(THING)) , ...) | vmalloc( - sizeof(THING) * (COUNT_CONST) + array_size(COUNT_CONST, sizeof(THING)) , ...) | vmalloc( - sizeof(THING) * COUNT_CONST + array_size(COUNT_CONST, sizeof(THING)) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ vmalloc( - SIZE * COUNT + array_size(COUNT, SIZE) , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( vmalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | vmalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | vmalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | vmalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | vmalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | vmalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | vmalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | vmalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( vmalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | vmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | vmalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | vmalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | vmalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | vmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( vmalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | vmalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | vmalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | vmalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | vmalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | vmalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | vmalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | vmalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( vmalloc(C1 * C2 * C3, ...) | vmalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants. @@ expression E1, E2; constant C1, C2; @@ ( vmalloc(C1 * C2, ...) | vmalloc( - E1 * E2 + array_size(E1, E2) , ...) ) Signed-off-by: Kees Cook <[email protected]>
2018-06-12treewide: kzalloc() -> kcalloc()Kees Cook1-3/+4
The kzalloc() function has a 2-factor argument form, kcalloc(). This patch replaces cases of: kzalloc(a * b, gfp) with: kcalloc(a * b, gfp) as well as handling cases of: kzalloc(a * b * c, gfp) with: kzalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kzalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kzalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kzalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kzalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kzalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(char) * COUNT + COUNT , ...) | kzalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kzalloc + kcalloc ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kzalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kzalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kzalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kzalloc(C1 * C2 * C3, ...) | kzalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kzalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kzalloc(sizeof(THING) * C2, ...) | kzalloc(sizeof(TYPE) * C2, ...) | kzalloc(C1 * C2 * C3, ...) | kzalloc(C1 * C2, ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - (E1) * E2 + E1, E2 , ...) | - kzalloc + kcalloc ( - (E1) * (E2) + E1, E2 , ...) | - kzalloc + kcalloc ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <[email protected]>
2018-06-12treewide: kmalloc() -> kmalloc_array()Kees Cook1-4/+4
The kmalloc() function has a 2-factor argument form, kmalloc_array(). This patch replaces cases of: kmalloc(a * b, gfp) with: kmalloc_array(a * b, gfp) as well as handling cases of: kmalloc(a * b * c, gfp) with: kmalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kmalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kmalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The tools/ directory was manually excluded, since it has its own implementation of kmalloc(). The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kmalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kmalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kmalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(u8) * COUNT + COUNT , ...) | kmalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kmalloc( - sizeof(char) * COUNT + COUNT , ...) | kmalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kmalloc + kmalloc_array ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kmalloc + kmalloc_array ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kmalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kmalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kmalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kmalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kmalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kmalloc(C1 * C2 * C3, ...) | kmalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kmalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kmalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kmalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kmalloc(sizeof(THING) * C2, ...) | kmalloc(sizeof(TYPE) * C2, ...) | kmalloc(C1 * C2 * C3, ...) | kmalloc(C1 * C2, ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - (E1) * E2 + E1, E2 , ...) | - kmalloc + kmalloc_array ( - (E1) * (E2) + E1, E2 , ...) | - kmalloc + kmalloc_array ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <[email protected]>
2018-06-04igb: Wait 10ms just once after TX queues resetSergey Nemov1-5/+8
Move 10ms sleep out of function resetting TX queue. Reset all the TX queues in one turn and wait for all of them just once. Use usleep_range() instead of mdelay() in order not to affect transmission on other interfaces. Signed-off-by: Sergey Nemov <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-06-04igb: Clear TSICR interrupts together with ICRJoanna Yurdal1-0/+2
Issuing "ip link set up/down" can block TSICR interrupts, what results in missing PTP Tx timestamp and no PPS pulse generation. Problem happens when the link is set up with the TSICR interrupts pending. ICR is cleared before enabling interrupts, while TSICR is not. When all TSICR interrupts are pending at this moment, time_sync interrupt will never be generated. TSICR should be cleared as well. In order to reproduce the issue: 1. Setup linux with IEEE 1588 grandmaster and PPS output enabled 2. Continue setting link up/down with random intervals between commands 3. Wait until PPS is not generated ( only one pulse is generated and PPS dies), and ptp4l complains constantly about Tx timeout. Signed-off-by: Joanna Yurdal <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-04-27net: intel: Cleanup the copyright/license headersJeff Kirsher21-460/+22
After many years of having a ~30 line copyright and license header to our source files, we are finally able to reduce that to one line with the advent of the SPDX identifier. Also caught a few files missing the SPDX license identifier, so fixed them up. Signed-off-by: Jeff Kirsher <[email protected]> Acked-by: Shannon Nelson <[email protected]> Acked-by: Richard Cochran <[email protected]> Tested-by: Andrew Bowers <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-04-25igb: Add support for adding offloaded clsflower filtersVinicius Costa Gomes2-2/+188
This allows filters added by tc-flower and specifying MAC addresses, Ethernet types, and the VLAN priority field, to be offloaded to the controller. This reuses most of the infrastructure used by ethtool, but clsflower filters are kept in a separated list, so they are invisible to ethtool. To setup clsflower offloading: $ tc qdisc replace dev eth0 handle 100: parent root mqprio \ num_tc 3 map 2 2 1 0 2 2 2 2 2 2 2 2 2 2 2 2 \ queues 1@0 1@1 2@2 hw 0 (clsflower offloading depends on the netword driver to be configured with multiple traffic classes, we use mqprio's 'num_tc' parameter to set it to 3) $ tc qdisc add dev eth0 ingress Examples of filters: $ tc filter add dev eth0 parent ffff: flower \ dst_mac aa:aa:aa:aa:aa:aa \ hw_tc 2 skip_sw (just a simple filter filtering for the destination MAC address and steering that traffic to queue 2) $ tc filter add dev enp2s0 parent ffff: proto 0x22f0 flower \ src_mac cc:cc:cc:cc:cc:cc \ hw_tc 1 skip_sw (as the i210 doesn't support steering traffic based on the source address alone, we need to use another steering traffic, in this case we are using the ethernet type (0x22f0) to steer traffic to queue 1) Signed-off-by: Vinicius Costa Gomes <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-04-25igb: Add the skeletons for tc-flower offloadingVinicius Costa Gomes1-0/+66
This adds basic functions needed to implement offloading for filters created by tc-flower. Signed-off-by: Vinicius Costa Gomes <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-04-25igb: Add MAC address support for ethtool nftuple filtersVinicius Costa Gomes1-4/+39
This adds the capability of configuring the queue steering of arriving packets based on their source and destination MAC addresses. Source address steering (i.e. driving traffic to a specific queue), for the i210, does not work, but filtering does (i.e. accepting traffic based on the source address). So, trying to add a filter specifying only a source address will be an error. In practical terms this adds support for the following use cases, characterized by these examples: $ ethtool -N eth0 flow-type ether dst aa:aa:aa:aa:aa:aa action 0 (this will direct packets with destination address "aa:aa:aa:aa:aa:aa" to the RX queue 0) $ ethtool -N eth0 flow-type ether src 44:44:44:44:44:44 \ proto 0x22f0 action 3 (this will direct packets with source address "44:44:44:44:44:44" and ethertype 0x22f0 to the RX queue 3) Signed-off-by: Vinicius Costa Gomes <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-04-25igb: Enable nfc filters to specify MAC addressesVinicius Costa Gomes2-0/+32
This allows igb_add_filter()/igb_erase_filter() to work on filters that include MAC addresses (both source and destination). For now, this only exposes the functionality, the next commit glues ethtool into this. Later in this series, these APIs are used to allow offloading of cls_flower filters. Signed-off-by: Vinicius Costa Gomes <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-04-25igb: Allow filters to be added for the local MAC addressVinicius Costa Gomes1-4/+36
Users expect that when adding a steering filter for the local MAC address, that all the traffic directed to that address will go to some queue. Currently, it's not possible to configure entries in the "in use" state, which is the normal state of the local MAC address entry (it is the default), this patch allows to override the steering configuration of "in use" entries, if the filter to be added match the address and address type (source or destination) of an existing entry. There is a bit of a special handling for entries referring to the local MAC address, when they are removed, only the steering configuration is reset. Signed-off-by: Vinicius Costa Gomes <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-04-25igb: Add support for enabling queue steering in filtersVinicius Costa Gomes3-0/+33
On some igb models (82575 and i210) the MAC address filters can control to which queue the packet will be assigned. This extends the 'state' with one more state to signify that queue selection should be enabled for that filter. As 82575 parts are no longer easily obtained (and this was developed against i210), only support for the i210 model is enabled. These functions are exported and will be used in the next patch. Signed-off-by: Vinicius Costa Gomes <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-04-25igb: Add support for MAC address filters specifying source addressesVinicius Costa Gomes3-5/+37
Makes it possible to direct packets to queues based on their source address. Documents the expected usage of the 'flags' parameter. Signed-off-by: Vinicius Costa Gomes <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-04-25igb: Enable the hardware traffic class feature bit for igb modelsVinicius Costa Gomes1-0/+3
This will allow functionality depending on the hardware being traffic class aware to work. In particular the tc-flower offloading checks verifies that this bit is set. Signed-off-by: Vinicius Costa Gomes <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-04-25igb: Fix queue selection on MAC filters on i210Vinicius Costa Gomes1-2/+7
On the RAH registers there are semantic differences on the meaning of the "queue" parameter for traffic steering depending on the controller model: there is the 82575 meaning, which "queue" means a RX Hardware Queue, and the i350 meaning, where it is a reception pool. The previous behaviour was having no effect for i210 based controllers because the QSEL bit of the RAH register wasn't being set. This patch separates the condition in discrete cases, so the different handling is clearer. Fixes: 83c21335c876 ("igb: improve MAC filter handling") Signed-off-by: Vinicius Costa Gomes <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-04-25igb: Fix not adding filter elements to the listVinicius Costa Gomes1-1/+1
Because the order of the parameters passes to 'hlist_add_behind()' was inverted, the 'parent' node was added "behind" the 'input', as input is not in the list, this causes the 'input' node to be lost. Fixes: 0e71def25281 ("igb: add support of RX network flow classification") Signed-off-by: Vinicius Costa Gomes <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-04-24igb: Fix the transmission mode of queue 0 for Qav modeVinicius Costa Gomes1-1/+16
When Qav mode is enabled, queue 0 should be kept on Stream Reservation mode. From the i210 datasheet, section 8.12.19: "Note: Queue0 QueueMode must be set to 1b when TransmitMode is set to Qav." ("QueueMode 1b" represents the Stream Reservation mode) The solution is to give queue 0 the all the credits it might need, so it has priority over queue 1. A situation where this can happen is when cbs is "installed" only on queue 1, leaving queue 0 alone. For example: $ tc qdisc replace dev enp2s0 handle 100: parent root mqprio num_tc 3 \ map 2 2 1 0 2 2 2 2 2 2 2 2 2 2 2 2 queues 1@0 1@1 2@2 hw 0 $ tc qdisc replace dev enp2s0 parent 100:2 cbs locredit -1470 \ hicredit 30 sendslope -980000 idleslope 20000 offload 1 Signed-off-by: Vinicius Costa Gomes <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-03-26ethernet: Use octal not symbolic permissionsJoe Perches1-1/+1
Prefer the direct use of octal for permissions. Done with checkpatch -f --types=SYMBOLIC_PERMS --fix-inplace and some typing. Miscellanea: o Whitespace neatening around these conversions. Signed-off-by: Joe Perches <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-03-23intel: add SPDX identifiers to all the Intel driversJeff Kirsher21-0/+21
Add the SPDX identifiers to all the Intel wired LAN driver files, as outlined in Documentation/process/license-rules.rst. Signed-off-by: Jeff Kirsher <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-03-05igb: Fix a test with HWTSTAMP_TX_ONChristophe JAILLET1-1/+1
'HWTSTAMP_TX_ON' should be handled as a value, not as a bit mask. The modified code should behave the same, because HWTSTAMP_TX_ON is 1 and no other possible values of 'tx_type' would match the test. However, this is more future-proof, should other values be allowed one day. See 'struct hwtstamp_config' in 'include/uapi/linux/net_tstamp.h' This fixes a warning reported by smatch: igb_xmit_frame_ring() warn: bit shifter 'HWTSTAMP_TX_ON' used for logical '&' Fixes: 26bd4e2db06be ("igb: protect TX timestamping from API misuse") Signed-off-by: Christophe JAILLET <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-03-05igb: Do not call netif_device_detach() when PCIe link goes missingMika Westerberg1-2/+1
When the driver notices that PCIe link is gone by reading 0xffffffff from a register it clears hw->hw_addr and then calls netif_device_detach(). This happens when the PCIe device is physically unplugged for example the user disconnected the Thunderbolt cable. However, netif_device_detach() prevents netif_unregister() from bringing the device down properly including tearing down MSI-X vectors. This triggers following crash during the driver removal: igb 0000:0b:00.0 enp11s0f0: PCIe link lost, device now detached ------------[ cut here ]------------ kernel BUG at drivers/pci/msi.c:352! invalid opcode: 0000 [#1] PREEMPT SMP PTI ... Call Trace: pci_disable_msix+0xc9/0xf0 igb_reset_interrupt_capability+0x58/0x60 [igb] igb_remove+0x90/0x100 [igb] pci_device_remove+0x31/0xa0 device_release_driver_internal+0x152/0x210 pci_stop_bus_device+0x78/0xa0 pci_stop_bus_device+0x38/0xa0 pci_stop_bus_device+0x38/0xa0 pci_stop_bus_device+0x26/0xa0 pci_stop_bus_device+0x38/0xa0 pci_stop_and_remove_bus_device+0x9/0x20 trim_stale_devices+0xee/0x130 ? _raw_spin_unlock_irqrestore+0xf/0x30 trim_stale_devices+0x8f/0x130 ? _raw_spin_unlock_irqrestore+0xf/0x30 trim_stale_devices+0xa1/0x130 ? get_slot_status+0x8b/0xc0 acpiphp_check_bridge.part.7+0xf9/0x140 acpiphp_hotplug_notify+0x170/0x1f0 ... To prevent the crash do not call netif_device_detach() in igb_rd32(). This should be fine because hw->hw_addr is set to NULL preventing future hardware access of the now missing device. Link: https://bugzilla.kernel.org/show_bug.cgi?id=198181 Reported-by: Ferenc Boldog <[email protected]> Reported-by: Nikolay Bogoychev <[email protected]> Signed-off-by: Mika Westerberg <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-03-05igb: add VF trust infrastructureCorinna Vinschen2-3/+28
* Add a per-VF value to know if a VF is trusted, by default don't trust VFs. * Implement netdev op to trust VFs (igb_ndo_set_vf_trust) and add trust status to ndo_get_vf_config output. * Allow a trusted VF to change MAC and MAC filters even if MAC has been administratively set. Signed-off-by: Corinna Vinschen <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-01-24igb: Clear TXSTMP when ptp_tx_work() is timeoutDaniel Hua1-0/+9
Problem description: After ethernet cable connect and disconnect for several iterations on a device with i210, tx timestamp will stop being put into the socket. Steps to reproduce: 1. Setup a device with i210 and wire it to a 802.1AS capable switch ( Extreme Networks Summit x440 is used in our case) 2. Have the gptp daemon running on the device and make sure it is synced with the switch 3. Have the switch disable and enable the port, wait for the device gets resynced with the switch 4. Iterates step 3 until the device is not albe to get resynced 5. Review the log in dmesg and you will see warning message "igb : clearing Tx timestamp hang" Root cause: If ptp_tx_work() gets scheduled just before the port gets disabled, a LINK DOWN event will be processed before ptp_tx_work(), which may cause timeout in ptp_tx_work(). In the timeout logic, the TSYNCTXCTL's TXTT bit (Transmit timestamp valid bit) is not cleared, causing no new timestamp loaded to TXSTMP register. Consequently therefore, no new interrupt is triggerred by TSICR.TXTS bit and no more Tx timestamp send to the socket. Signed-off-by: Daniel Hua <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-01-24igb: Delete an error message for a failed memory allocation in ↵Markus Elfring1-2/+0
igb_enable_sriov() Omit an extra message for a memory allocation failure in this function. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-01-24igb: Free IRQs when device is hotpluggedLyude Paul1-1/+1
Recently I got a Caldigit TS3 Thunderbolt 3 dock, and noticed that upon hotplugging my kernel would immediately crash due to igb: [ 680.825801] kernel BUG at drivers/pci/msi.c:352! [ 680.828388] invalid opcode: 0000 [#1] SMP [ 680.829194] Modules linked in: igb(O) thunderbolt i2c_algo_bit joydev vfat fat btusb btrtl btbcm btintel bluetooth ecdh_generic hp_wmi sparse_keymap rfkill wmi_bmof iTCO_wdt intel_rapl x86_pkg_temp_thermal coretemp crc32_pclmul snd_pcm rtsx_pci_ms mei_me snd_timer memstick snd pcspkr mei soundcore i2c_i801 tpm_tis psmouse shpchp wmi tpm_tis_core tpm video hp_wireless acpi_pad rtsx_pci_sdmmc mmc_core crc32c_intel serio_raw rtsx_pci mfd_core xhci_pci xhci_hcd i2c_hid i2c_core [last unloaded: igb] [ 680.831085] CPU: 1 PID: 78 Comm: kworker/u16:1 Tainted: G O 4.15.0-rc3Lyude-Test+ #6 [ 680.831596] Hardware name: HP HP ZBook Studio G4/826B, BIOS P71 Ver. 01.03 06/09/2017 [ 680.832168] Workqueue: kacpi_hotplug acpi_hotplug_work_fn [ 680.832687] RIP: 0010:free_msi_irqs+0x180/0x1b0 [ 680.833271] RSP: 0018:ffffc9000030fbf0 EFLAGS: 00010286 [ 680.833761] RAX: ffff8803405f9c00 RBX: ffff88033e3d2e40 RCX: 000000000000002c [ 680.834278] RDX: 0000000000000000 RSI: 00000000000000ac RDI: ffff880340be2178 [ 680.834832] RBP: 0000000000000000 R08: ffff880340be1ff0 R09: ffff8803405f9c00 [ 680.835342] R10: 0000000000000000 R11: 0000000000000040 R12: ffff88033d63a298 [ 680.835822] R13: ffff88033d63a000 R14: 0000000000000060 R15: ffff880341959000 [ 680.836332] FS: 0000000000000000(0000) GS:ffff88034f440000(0000) knlGS:0000000000000000 [ 680.836817] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 680.837360] CR2: 000055e64044afdf CR3: 0000000001c09002 CR4: 00000000003606e0 [ 680.837954] Call Trace: [ 680.838853] pci_disable_msix+0xce/0xf0 [ 680.839616] igb_reset_interrupt_capability+0x5d/0x60 [igb] [ 680.840278] igb_remove+0x9d/0x110 [igb] [ 680.840764] pci_device_remove+0x36/0xb0 [ 680.841279] device_release_driver_internal+0x157/0x220 [ 680.841739] pci_stop_bus_device+0x7d/0xa0 [ 680.842255] pci_stop_bus_device+0x2b/0xa0 [ 680.842722] pci_stop_bus_device+0x3d/0xa0 [ 680.843189] pci_stop_and_remove_bus_device+0xe/0x20 [ 680.843627] trim_stale_devices+0xf3/0x140 [ 680.844086] trim_stale_devices+0x94/0x140 [ 680.844532] trim_stale_devices+0xa6/0x140 [ 680.845031] ? get_slot_status+0x90/0xc0 [ 680.845536] acpiphp_check_bridge.part.5+0xfe/0x140 [ 680.846021] acpiphp_hotplug_notify+0x175/0x200 [ 680.846581] ? free_bridge+0x100/0x100 [ 680.847113] acpi_device_hotplug+0x8a/0x490 [ 680.847535] acpi_hotplug_work_fn+0x1a/0x30 [ 680.848076] process_one_work+0x182/0x3a0 [ 680.848543] worker_thread+0x2e/0x380 [ 680.848963] ? process_one_work+0x3a0/0x3a0 [ 680.849373] kthread+0x111/0x130 [ 680.849776] ? kthread_create_worker_on_cpu+0x50/0x50 [ 680.850188] ret_from_fork+0x1f/0x30 [ 680.850601] Code: 43 14 85 c0 0f 84 d5 fe ff ff 31 ed eb 0f 83 c5 01 39 6b 14 0f 86 c5 fe ff ff 8b 7b 10 01 ef e8 b7 e4 d2 ff 48 83 78 70 00 74 e3 <0f> 0b 49 8d b5 a0 00 00 00 e8 62 6f d3 ff e9 c7 fe ff ff 48 8b [ 680.851497] RIP: free_msi_irqs+0x180/0x1b0 RSP: ffffc9000030fbf0 As it turns out, normally the freeing of IRQs that would fix this is called inside of the scope of __igb_close(). However, since the device is already gone by the point we try to unregister the netdevice from the driver due to a hotplug we end up seeing that the netif isn't present and thus, forget to free any of the device IRQs. So: make sure that if we're in the process of dismantling the netdev, we always allow __igb_close() to be called so that IRQs may be freed normally. Additionally, only allow igb_close() to be called from __igb_close() if it hasn't already been called for the given adapter. Signed-off-by: Lyude Paul <[email protected]> Fixes: 9474933caf21 ("igb: close/suspend race in netif_device_detach") Cc: Todd Fujinaka <[email protected]> Cc: Stephen Hemminger <[email protected]> Cc: [email protected] Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-01-24igb: Clarify idleslope config constraintsJesus Sanchez-Palencia1-0/+14
By design, the idleslope increments are restricted to 16.384kbps steps. Add a comment to igb_main.c making that explicit and add one example that illustrates the impact of that. Signed-off-by: Jesus Sanchez-Palencia <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-01-24igb: add function to get maximum RSS queuesZhang Shengju3-33/+12
This patch adds a new function igb_get_max_rss_queues() to get maximum RSS queues, this will reduce duplicate code and facilitate future maintenance. Signed-off-by: Zhang Shengju <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2018-01-24igb: Allow to remove administratively set MAC on VFsCorinna Vinschen1-11/+31
Before libvirt modifies the MAC address and vlan tag for an SRIOV VF for use by a virtual machine (either using vfio device assignment or macvtap passthru mode), it saves the current MAC address and vlan tag so that it can reset them to their original value when the guest is done. Libvirt can't leave the VF MAC set to the value used by the now-defunct guest since it may be started again later using a different VF, but it certainly shouldn't just pick any random value, either. So it saves the state of everything prior to using the VF, and resets it to that. The igb driver initializes the MAC addresses of all VFs to 00:00:00:00:00:00, and reports that when asked (via an RTM_GETLINK netlink message, also visible in the list of VFs in the output of "ip link show"). But when libvirt attempts to restore the MAC address back to 00:00:00:00:00:00 (using an RTM_SETLINK netlink message) the kernel responds with "Invalid argument". Forbidding a reset back to the original value leaves the VF MAC at the value set for the now-defunct virtual machine. Especially on a system with NetworkManager enabled, this has very bad consequences, since NetworkManager forces all interfacess to be IFF_UP all the time - if the same virtual machine is restarted using a different VF (or even on a different host), there will be multiple interfaces watching for traffic with the same MAC address. To allow libvirt to revert to the original state, we need a way to remove the administrative set MAC on a VF, to allow normal host operation again, and to reset/overwrite the VF MAC via VF netdev. This patch implements the outlined scenario by allowing to set the VF MAC to 00:00:00:00:00:00 via RTM_SETLINK on the PF. igb_ndo_set_vf_mac resets the IGB_VF_FLAG_PF_SET_MAC flag to 0, so it's possible to reset the VF MAC back to the original value via the VF netdev. Note: Recent patches to libvirt allow for a workaround if the NIC isn't capable of resetting the administrative MAC back to all 0, but in theory the NIC should allow resetting the MAC in the first place. Signed-off-by: Corinna Vinschen <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2017-11-21igb: Use smp_rmb rather than read_barrier_dependsBrian King1-1/+1
The original issue being fixed in this patch was seen with the ixgbe driver, but the same issue exists with igb as well, as the code is very similar. read_barrier_depends is not sufficient to ensure loads following it are not speculatively loaded out of order by the CPU, which can result in stale data being loaded, causing potential system crashes. Cc: stable <[email protected]> Signed-off-by: Brian King <[email protected]> Acked-by: Jesse Brandeburg <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2017-11-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds4-10/+394
Pull networking updates from David Miller: "Highlights: 1) Maintain the TCP retransmit queue using an rbtree, with 1GB windows at 100Gb this really has become necessary. From Eric Dumazet. 2) Multi-program support for cgroup+bpf, from Alexei Starovoitov. 3) Perform broadcast flooding in hardware in mv88e6xxx, from Andrew Lunn. 4) Add meter action support to openvswitch, from Andy Zhou. 5) Add a data meta pointer for BPF accessible packets, from Daniel Borkmann. 6) Namespace-ify almost all TCP sysctl knobs, from Eric Dumazet. 7) Turn on Broadcom Tags in b53 driver, from Florian Fainelli. 8) More work to move the RTNL mutex down, from Florian Westphal. 9) Add 'bpftool' utility, to help with bpf program introspection. From Jakub Kicinski. 10) Add new 'cpumap' type for XDP_REDIRECT action, from Jesper Dangaard Brouer. 11) Support 'blocks' of transformations in the packet scheduler which can span multiple network devices, from Jiri Pirko. 12) TC flower offload support in cxgb4, from Kumar Sanghvi. 13) Priority based stream scheduler for SCTP, from Marcelo Ricardo Leitner. 14) Thunderbolt networking driver, from Amir Levy and Mika Westerberg. 15) Add RED qdisc offloadability, and use it in mlxsw driver. From Nogah Frankel. 16) eBPF based device controller for cgroup v2, from Roman Gushchin. 17) Add some fundamental tracepoints for TCP, from Song Liu. 18) Remove garbage collection from ipv6 route layer, this is a significant accomplishment. From Wei Wang. 19) Add multicast route offload support to mlxsw, from Yotam Gigi" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2177 commits) tcp: highest_sack fix geneve: fix fill_info when link down bpf: fix lockdep splat net: cdc_ncm: GetNtbFormat endian fix openvswitch: meter: fix NULL pointer dereference in ovs_meter_cmd_reply_start netem: remove unnecessary 64 bit modulus netem: use 64 bit divide by rate tcp: Namespace-ify sysctl_tcp_default_congestion_control net: Protect iterations over net::fib_notifier_ops in fib_seq_sum() ipv6: set all.accept_dad to 0 by default uapi: fix linux/tls.h userspace compilation error usbnet: ipheth: prevent TX queue timeouts when device not ready vhost_net: conditionally enable tx polling uapi: fix linux/rxrpc.h userspace compilation errors net: stmmac: fix LPI transitioning for dwmac4 atm: horizon: Fix irq release error net-sysfs: trigger netlink notification on ifalias change via sysfs openvswitch: Using kfree_rcu() to simplify the code openvswitch: Make local function ovs_nsh_key_attr_size() static openvswitch: Fix return value check in ovs_meter_cmd_features() ...
2017-11-08net_sch: cbs: Change TC_SETUP_CBS to TC_SETUP_QDISC_CBSNogah Frankel1-1/+1
Change TC_SETUP_CBS to TC_SETUP_QDISC_CBS to match the new convention.. Signed-off-by: Nogah Frankel <[email protected]> Signed-off-by: Jiri Pirko <[email protected]> Reviewed-by: Simon Horman <[email protected]> Acked-by: Vinicius Costa Gomes <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2017-11-07Merge branch 'linus' into locking/core, to resolve conflictsIngo Molnar1-1/+1
Conflicts: include/linux/compiler-clang.h include/linux/compiler-gcc.h include/linux/compiler-intel.h include/uapi/linux/stddef.h Signed-off-by: Ingo Molnar <[email protected]>
2017-10-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-1/+1
Several conflicts here. NFP driver bug fix adding nfp_netdev_is_nfp_repr() check to nfp_fl_output() needed some adjustments because the code block is in an else block now. Parallel additions to net/pkt_cls.h and net/sch_generic.h A bug fix in __tcp_retransmit_skb() conflicted with some of the rbtree changes in net-next. The tc action RCU callback fixes in 'net' had some overlap with some of the recent tcf_block reworking. Signed-off-by: David S. Miller <[email protected]>
2017-10-27igb: Add support for CBS offloadAndre Guedes4-0/+384
This patch adds support for Credit-Based Shaper (CBS) qdisc offload from Traffic Control system. This support enable us to leverage the Forwarding and Queuing for Time-Sensitive Streams (FQTSS) features from Intel i210 Ethernet Controller. FQTSS is the former 802.1Qav standard which was merged into 802.1Q in 2014. It enables traffic prioritization and bandwidth reservation via the Credit-Based Shaper which is implemented in hardware by i210 controller. The patch introduces the igb_setup_tc() function which implements the support for CBS qdisc hardware offload in the IGB driver. CBS offload is the only traffic control offload supported by the driver at the moment. FQTSS transmission mode from i210 controller is automatically enabled by the IGB driver when the CBS is enabled for the first hardware queue. Likewise, FQTSS mode is automatically disabled when CBS is disabled for the last hardware queue. Changing FQTSS mode requires NIC reset. FQTSS feature is supported by i210 controller only. Signed-off-by: Andre Guedes <[email protected]> Tested-by: Aaron Brown <[email protected]> Tested-by: Henrik Austad <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2017-10-26igb: Fix TX map failure pathJean-Philippe Brucker1-1/+1
When the driver cannot map a TX buffer, instead of rolling back gracefully and retrying later, we currently get a panic: [ 159.885994] igb 0000:00:00.0: TX DMA map failed [ 159.886588] Unable to handle kernel paging request at virtual address ffff00000a08c7a8 ... [ 159.897031] PC is at igb_xmit_frame_ring+0x9c8/0xcb8 Fix the erroneous test that leads to this situation. Signed-off-by: Jean-Philippe Brucker <[email protected]> Tested-by: Andrew Bowers <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2017-10-25locking/atomics: COCCINELLE/treewide: Convert trivial ACCESS_ONCE() patterns ↵Mark Rutland2-2/+2
to READ_ONCE()/WRITE_ONCE() Please do not apply this to mainline directly, instead please re-run the coccinelle script shown below and apply its output. For several reasons, it is desirable to use {READ,WRITE}_ONCE() in preference to ACCESS_ONCE(), and new code is expected to use one of the former. So far, there's been no reason to change most existing uses of ACCESS_ONCE(), as these aren't harmful, and changing them results in churn. However, for some features, the read/write distinction is critical to correct operation. To distinguish these cases, separate read/write accessors must be used. This patch migrates (most) remaining ACCESS_ONCE() instances to {READ,WRITE}_ONCE(), using the following coccinelle script: ---- // Convert trivial ACCESS_ONCE() uses to equivalent READ_ONCE() and // WRITE_ONCE() // $ make coccicheck COCCI=/home/mark/once.cocci SPFLAGS="--include-headers" MODE=patch virtual patch @ depends on patch @ expression E1, E2; @@ - ACCESS_ONCE(E1) = E2 + WRITE_ONCE(E1, E2) @ depends on patch @ expression E; @@ - ACCESS_ONCE(E) + READ_ONCE(E) ---- Signed-off-by: Mark Rutland <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]>
2017-10-18ethernet/intel: Convert timers to use timer_setup()Kees Cook1-10/+8
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Switches test of .data field to .function, since .data will be going away. Cc: Jeff Kirsher <[email protected]> Cc: [email protected] Cc: [email protected] Signed-off-by: Kees Cook <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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