- 23 Mar, 2023 11 commits
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Liang He authored
In device_for_each_child_node(), we should add fwnode_handle_put() when break out of the iteration device_for_each_child_node() as it will automatically increase and decrease the refcounter. Fixes: 379d7ac7 ("phy: mdio-thunder: Add driver for Cavium Thunder SoC MDIO buses.") Signed-off-by: Liang He <windhl@126.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linuxJakub Kicinski authored
Saeed Mahameed says: ==================== mlx5 fixes 2023-03-21 This series provides bug fixes to mlx5 driver. * tag 'mlx5-fixes-2023-03-21' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux: net/mlx5: E-Switch, Fix an Oops in error handling code net/mlx5: Read the TC mapping of all priorities on ETS query net/mlx5e: Overcome slow response for first macsec ASO WQE net/mlx5e: Initialize link speed to zero net/mlx5: Fix steering rules cleanup net/mlx5e: Block entering switchdev mode with ns inconsistency net/mlx5e: Set uplink rep as NETNS_LOCAL ==================== Link: https://lore.kernel.org/r/20230321211135.47711-1-saeed@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queueJakub Kicinski authored
Tony Nguyen says: ==================== Intel Wired LAN Driver Updates 2023-03-21 (ice) This series contains updates to ice driver only. Piotr sets first_desc field for proper handling of Flow Director packets. Michal moves error checking for VF earlier in function to properly return error before other checks/reporting; he also corrects VSI filter removal to be done during VSI removal and not rebuild. * '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue: ice: remove filters only if VSI is deleted ice: check if VF exists before mode check ice: fix rx buffers handling for flow director packets ==================== Link: https://lore.kernel.org/r/20230321183641.2849726-1-anthony.l.nguyen@intel.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queueJakub Kicinski authored
Tony Nguyen says: ==================== Intel Wired LAN Driver Updates 2023-03-21 (iavf, i40e) This series contains updates to iavf and i40e drivers. Stefan Assmann adds check, and return, if driver has already gone through remove to prevent hang for iavf. Radoslaw adds zero initialization to ensure Flow Director packets are populated with correct values for i40e. * '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue: i40e: fix flow director packet filter programming iavf: fix hang on reboot with ice ==================== Link: https://lore.kernel.org/r/20230321183548.2849671-1-anthony.l.nguyen@intel.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>
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Arınç ÜNAL authored
Move setting the ssc_delta variable to under the PHY_INTERFACE_MODE_TRGMII case as it's only needed when trgmii is used. Fixes: b8f126a8 ("net-next: dsa: add dsa support for Mediatek MT7530 switch") Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com> Link: https://lore.kernel.org/r/20230320190520.124513-3-arinc.unal@arinc9.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>
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Arınç ÜNAL authored
Move lowering the TRGMII Tx clock driving to mt7530_setup(), after setting the core clock, as seen on the U-Boot MediaTek ethernet driver. Move the code which looks like it lowers the TRGMII Rx clock driving to after the TRGMII Tx clock driving is lowered. This is run after lowering the Tx clock driving on the U-Boot MediaTek ethernet driver as well. This way, the switch should consume less power regardless of port 6 being used. Update the comment explaining mt7530_pad_clk_setup(). Tested rgmii and trgmii modes of port 6 and rgmii mode of port 5 on MCM MT7530 on MT7621AT Unielec U7621-06 and standalone MT7530 on MT7623NI Bananapi BPI-R2. Fixes: b8f126a8 ("net-next: dsa: add dsa support for Mediatek MT7530 switch") Link: https://source.denx.de/u-boot/u-boot/-/blob/29a48bf9ccba45a5e560bb564bbe76e42629325f/drivers/net/mtk_eth.c#L682Tested-by: Arınç ÜNAL <arinc.unal@arinc9.com> Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com> Link: https://lore.kernel.org/r/20230320190520.124513-2-arinc.unal@arinc9.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>
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Arınç ÜNAL authored
Split the code that enables and disables TRGMII clocks and core clock. Move enabling and disabling core clock to mt7530_pll_setup() as it's supposed to be run there. Add 20 ms delay before enabling the core clock as seen on the U-Boot MediaTek ethernet driver. Change the comment for enabling and disabling TRGMII clocks as the code seems to affect both TXC and RXC. Tested rgmii and trgmii modes of port 6 and rgmii mode of port 5 on MCM MT7530 on MT7621AT Unielec U7621-06 and standalone MT7530 on MT7623NI Bananapi BPI-R2. Fixes: b8f126a8 ("net-next: dsa: add dsa support for Mediatek MT7530 switch") Link: https://source.denx.de/u-boot/u-boot/-/blob/29a48bf9ccba45a5e560bb564bbe76e42629325f/drivers/net/mtk_eth.c#L589Tested-by: Arınç ÜNAL <arinc.unal@arinc9.com> Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com> Link: https://lore.kernel.org/r/20230320190520.124513-1-arinc.unal@arinc9.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>
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Grant Grundler authored
"modprobe asix ; rmmod asix ; modprobe asix" fails with: sysfs: cannot create duplicate filename \ '/devices/virtual/mdio_bus/usb-003:004' Issue was originally reported by Anton Lundin on 2022-06-22 (link below). Chrome OS team hit the same issue in Feb, 2023 when trying to find work arounds for other issues with AX88172 devices. The use of devm_mdiobus_register() with usbnet devices results in the MDIO data being associated with the USB device. When the asix driver is unloaded, the USB device continues to exist and the corresponding "mdiobus_unregister()" is NOT called until the USB device is unplugged or unauthorized. So the next "modprobe asix" will fail because the MDIO phy sysfs attributes still exist. The 'easy' (from a design PoV) fix is to use the non-devm variants of mdiobus_* functions and explicitly manage this use in the asix_bind and asix_unbind function calls. I've not explored trying to fix usbnet initialization so devm_* stuff will work. Fixes: e532a096 ("net: usb: asix: ax88772: add phylib support") Reported-by: Anton Lundin <glance@acc.umu.se> Link: https://lore.kernel.org/netdev/20220623063649.GD23685@pengutronix.de/T/Tested-by: Eizan Miyamoto <eizan@chromium.org> Signed-off-by: Grant Grundler <grundler@chromium.org> Link: https://lore.kernel.org/r/20230321170539.732147-1-grundler@chromium.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>
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Joshua Washington authored
The link speed is never changed for the uptime of a VM, and the current implementation sends an admin queue command for each call. Admin queue command invocations have nontrivial overhead (e.g., VM exits), which can be disruptive to users if triggered frequently. Our telemetry data shows that there are VMs that make frequent calls to this admin queue command. Caching the result of the original admin queue command would eliminate the need to send multiple admin queue commands on subsequent calls to retrieve link speed. Fixes: 7e074d5a ("gve: Enable Link Speed Reporting in the driver.") Signed-off-by: Joshua Washington <joshwash@google.com> Reviewed-by: Simon Horman <simon.horman@corigine.com> Link: https://lore.kernel.org/r/20230321172332.91678-1-joshwash@google.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>
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Donald Hunter authored
The pack strings use 'b' signed char for cmd and version but struct genlmsghdr defines them as unsigned char. Use 'B' instead. Fixes: 4e4480e8 ("tools: ynl: move the cli and netlink code around") Signed-off-by: Donald Hunter <donald.hunter@gmail.com> Link: https://lore.kernel.org/r/20230319193803.97453-1-donald.hunter@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>
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Vladimir Oltean authored
When running "ethtool -S eno0 --groups rmon" without an explicit "--src emac|pmac" argument, the kernel will not report rx-rmon-etherStatsPkts64to64Octets, rx-rmon-etherStatsPkts65to127Octets, etc. This is because on ETHTOOL_MAC_STATS_SRC_AGGREGATE, we do not populate the "ranges" argument. ocelot_port_get_rmon_stats() does things differently and things work there. I had forgotten to make sure that the code is structured the same way in both drivers, so do that now. Fixes: cf52bd23 ("net: enetc: add support for MAC Merge statistics counters") Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Simon Horman <simon.horman@corigine.com> Link: https://lore.kernel.org/r/20230321232831.1200905-1-vladimir.oltean@nxp.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>
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- 22 Mar, 2023 9 commits
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Ido Schimmel authored
Local port is a 10-bit number, but it was mistakenly stored in a u8, resulting in firmware errors when using a netdev corresponding to a local port higher than 255. Fix by storing the local port in u16, as is done in the rest of the code. Fixes: bf73904f ("mlxsw: Add support for 802.1Q FID family") Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Danielle Ratson <danieller@nvidia.com> Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Simon Horman <simon.horman@corigine.com> Link: https://lore.kernel.org/r/eace1f9d96545ab8a2775db857cb7e291a9b166b.1679398549.git.petrm@nvidia.comSigned-off-by: Paolo Abeni <pabeni@redhat.com>
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Zhang Changzhong authored
The DMA address returned by dma_map_single() should be checked with dma_mapping_error(). Fix it accordingly. Fixes: efcce839 ("[PATCH] macsonic/jazzsonic network drivers update") Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com> Tested-by: Stan Johnson <userm57@yahoo.com> Signed-off-by: Finn Thain <fthain@linux-m68k.org> Reviewed-by: Leon Romanovsky <leonro@nvidia.com> Link: https://lore.kernel.org/r/6645a4b5c1e364312103f48b7b36783b94e197a2.1679370343.git.fthain@linux-m68k.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>
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Jakub Kicinski authored
Vladimir Oltean says: ==================== Fix trainwreck with Ocelot switch statistics counters While testing the patch set for preemptible traffic classes with some controlled traffic and measuring counter deltas: https://lore.kernel.org/netdev/20230220122343.1156614-1-vladimir.oltean@nxp.com/ I noticed that in the output of "ethtool -S swp0 --groups eth-mac eth-phy eth-ctrl rmon -- --src emac | grep -v ': 0'", the TX counters were off. Quickly I realized that their values were permutated by 1 compared to their names, and that for example tx-rmon-etherStatsPkts64to64Octets was incrementing when tx-rmon-etherStatsPkts65to127Octets should have. Initially I suspected something having to do with the bulk reading logic, and indeed I found a bug there (fixed as 1/3), but that was not the source of the problems. Instead it revealed other problems. While dumping the regions created by the driver on my switch, I figured out that it sees a discontinuity which shouldn't have existed between reg 0x278 and reg 0x280. Discontinuity between last reg 0x0 and new reg 0x0, creating new region Discontinuity between last reg 0x108 and new reg 0x200, creating new region Discontinuity between last reg 0x278 and new reg 0x280, creating new region Discontinuity between last reg 0x2b0 and new reg 0x400, creating new region region of 67 contiguous counters starting with SYS:STAT:CNT[0x000] region of 31 contiguous counters starting with SYS:STAT:CNT[0x080] region of 13 contiguous counters starting with SYS:STAT:CNT[0x0a0] region of 18 contiguous counters starting with SYS:STAT:CNT[0x100] That is where TX_MM_HOLD should have been, and that was the bug, since it was missing. After adding it, the regions look like this and the off-by-one issue is resolved: Discontinuity between last reg 0x000000 and new reg 0x000000, creating new region Discontinuity between last reg 0x000108 and new reg 0x000200, creating new region Discontinuity between last reg 0x0002b0 and new reg 0x000400, creating new region region of 67 contiguous counters starting with SYS:STAT:CNT[0x000] region of 45 contiguous counters starting with SYS:STAT:CNT[0x080] region of 18 contiguous counters starting with SYS:STAT:CNT[0x100] However, as I am thinking out loud, it should have not reported the other counters as off by one even when skipping TX_MM_HOLD... after all, on Ocelot/Seville, there are more counters which need to be skipped. Which is when I investigated and noticed the bug solved in 2/3. I've validated that both on native VSC9959 (which uses ocelot_mm_stats_layout) as well as by faking the other switches by making VSC9959 use the plain ocelot_stats_layout. To summarize: on all Ocelot switches, the TX counters and drop counters are completely broken. The RX counters are mostly fine. With this occasion, I have collected more cleanup patches in this area, which I'm going to submit after the net -> net-next merge. ==================== Link: https://lore.kernel.org/r/20230321010325.897817-1-vladimir.oltean@nxp.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>
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Vladimir Oltean authored
The lack of a definition for this counter is what initially prompted me to investigate a problem which really manifested itself as the previous change, "net: mscc: ocelot: fix transfer from region->buf to ocelot->stats". When TX_MM_HOLD is defined in enum ocelot_stat but not in struct ocelot_stat_layout ocelot_mm_stats_layout, this creates a hole, which due to the aforementioned bug, makes all counters following TX_MM_HOLD be recorded off by one compared to their correct position. So for example, a non-zero TX_PMAC_OCTETS would be reported as TX_MERGE_FRAGMENTS, TX_PMAC_UNICAST would be reported as TX_PMAC_OCTETS, TX_PMAC_64 would be reported as TX_PMAC_PAUSE, etc etc. This is because the size of the hole (1) is much smaller than the size of the region, so the phenomenon where the stats are off-by-one, rather than lost, prevails. However, the phenomenon where stats are lost can be seen too, for example with DROP_LOCAL, which is at the beginning of its own region (offset 0x000400 vs the previous 0x0002b0 constitutes a discontinuity). This is also reported as off by one and saved to TX_PMAC_1527_MAX, but that counter is not reported to the unstructured "ethtool -S", as opposed to DROP_LOCAL which is (as "drop_local"). Fixes: ab3f97a9 ("net: mscc: ocelot: export ethtool MAC Merge stats for Felix VSC9959") Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Vladimir Oltean authored
To understand the problem, we need some definitions. The driver is aware of multiple counters (enum ocelot_stat), yet not all switches supported by the driver implement all counters. There are 2 statistics layouts: ocelot_stats_layout and ocelot_mm_stats_layout, the latter having 36 counters more than the former. ocelot->stats[] is not a compact array, i.e. there are elements within it which are not going to be populated for ocelot_stats_layout. On the other hand, ocelot->stats[] is easily indexable, for example "tx_octets" for port 3 can be found at ocelot->stats[3 * OCELOT_NUM_STATS + OCELOT_STAT_TX_OCTETS], and that is why we keep it sparse. Regions, as created by ocelot_prepare_stats_regions(), are compact (every element from region->buf will correspond to a counter that is present in this switch's layout) but are not easily indexable. Let's define holes as the ranges of values of enum ocelot_stat for which ocelot_stats_layout doesn't have a "reg" defined. For example, there is a hole between OCELOT_STAT_RX_GREEN_PRIO_7 and OCELOT_STAT_TX_OCTETS which is of 23 elements that are only present on ocelot_mm_stats_layout, and as such, they are also present in enum ocelot_stat. Let's define the left extremity of the hole - the last enum ocelot_stat still defined - as A (in this case OCELOT_STAT_RX_GREEN_PRIO_7) and the right extremity - the first enum ocelot_stat that is defined after a series of undefined ones - as B (in this case OCELOT_STAT_TX_OCTETS). There is a bug in the procedure which transfers stats from region->buf[] to ocelot->stats[]. For each hole in the ocelot_stats_layout, the logic transfers the stats starting with enum ocelot_stat B to ocelot->stats[] index A + 1. So all stats after a hole are saved to a position which is off by B - A + 1 elements. This causes 2 kinds of issues: (a) counters which shouldn't increment increment (b) counters which should increment don't Holes in the ocelot_stat_layout automatically imply the end of a region and the beginning of a new one; however the reverse is not necessarily true. For example, for ocelot_mm_stat_layout, there could be multiple regions (which indicate discontinuities in register addresses) while there is no hole (which indicates discontinuities in enum ocelot_stat values). In the example above, the stats from the second region->buf[] are not transferred to ocelot->stats starting with index "port * OCELOT_NUM_STATS + OCELOT_STAT_TX_OCTETS" as they should, but rather, starting with element "port * OCELOT_NUM_STATS + OCELOT_STAT_RX_GREEN_PRIO_7 + 1". That stats[] array element is not reported to user space for switches that use ocelot_stat_layout, and that is how issue (b) occurs. However, if the length of the second region is larger than the hole, then some stats will start to be transferred to the ocelot->stats[] indices which *are* reported to user space, but those indices contain wrong values (corresponding to unexpected counters). This is how issue (a) occurs. The procedure, as it was introduced in commit d87b1c08 ("net: mscc: ocelot: use bulk reads for stats"), was not buggy, because there were no holes in the struct ocelot_stat_layout instances at that time. The problem is that when those holes were introduced, the function was not updated to take them into consideration. To update the procedure, we need to know, for each region, which enum ocelot_stat corresponds to its region->base. We have no way of deducing that based on the contents of struct ocelot_stats_region, so we need to add this information. Fixes: ab3f97a9 ("net: mscc: ocelot: export ethtool MAC Merge stats for Felix VSC9959") Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Vladimir Oltean authored
The blamed commit changed struct ocelot_stat_layout :: "u32 offset" to "u32 reg". However, "u32 reg" is not quite a register address, but an enum ocelot_reg, which in itself encodes an enum ocelot_target target in the upper bits, and an index into the ocelot->map[target][] array in the lower bits. So, whereas the previous code comparison between stats_layout[i].offset and last + 1 was correct (because those "offsets" at the time were 32-bit relative addresses), the new code, comparing layout[i].reg to last + 4 is not correct, because the "reg" here is an enum/index, not an actual register address. What we want to compare are indeed register addresses, but to do that, we need to actually go through the same motions as __ocelot_bulk_read_ix() itself. With this bug, all statistics counters are deemed by ocelot_prepare_stats_regions() as constituting their own region. (Truncated) log on VSC9959 (Felix) below (prints added by me): Before: region of 1 contiguous counters starting with SYS:STAT:CNT[0x000] region of 1 contiguous counters starting with SYS:STAT:CNT[0x001] region of 1 contiguous counters starting with SYS:STAT:CNT[0x002] ... region of 1 contiguous counters starting with SYS:STAT:CNT[0x041] region of 1 contiguous counters starting with SYS:STAT:CNT[0x042] region of 1 contiguous counters starting with SYS:STAT:CNT[0x080] region of 1 contiguous counters starting with SYS:STAT:CNT[0x081] ... region of 1 contiguous counters starting with SYS:STAT:CNT[0x0ac] region of 1 contiguous counters starting with SYS:STAT:CNT[0x100] region of 1 contiguous counters starting with SYS:STAT:CNT[0x101] ... region of 1 contiguous counters starting with SYS:STAT:CNT[0x111] After: region of 67 contiguous counters starting with SYS:STAT:CNT[0x000] region of 45 contiguous counters starting with SYS:STAT:CNT[0x080] region of 18 contiguous counters starting with SYS:STAT:CNT[0x100] Since commit d87b1c08 ("net: mscc: ocelot: use bulk reads for stats") intended bulking as a performance improvement, and since now, with trivial-sized regions, performance is even worse than without bulking at all, this could easily qualify as a performance regression. Fixes: d4c36765 ("net: mscc: ocelot: keep ocelot_stat_layout by reg address, not offset") Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Acked-by: Colin Foster <colin.foster@in-advantage.com> Tested-by: Colin Foster <colin.foster@in-advantage.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Eric Dumazet authored
Drivers should not assume skb_mac_header(skb) == skb->data in their ndo_start_xmit(). Use skb_network_offset() and skb_transport_offset() which better describe what is needed in erspan_fb_xmit() and ip6erspan_tunnel_xmit() syzbot reported: WARNING: CPU: 0 PID: 5083 at include/linux/skbuff.h:2873 skb_mac_header include/linux/skbuff.h:2873 [inline] WARNING: CPU: 0 PID: 5083 at include/linux/skbuff.h:2873 ip6erspan_tunnel_xmit+0x1d9c/0x2d90 net/ipv6/ip6_gre.c:962 Modules linked in: CPU: 0 PID: 5083 Comm: syz-executor406 Not tainted 6.3.0-rc2-syzkaller-00866-gd4671cb9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 RIP: 0010:skb_mac_header include/linux/skbuff.h:2873 [inline] RIP: 0010:ip6erspan_tunnel_xmit+0x1d9c/0x2d90 net/ipv6/ip6_gre.c:962 Code: 04 02 41 01 de 84 c0 74 08 3c 03 0f 8e 1c 0a 00 00 45 89 b4 24 c8 00 00 00 c6 85 77 fe ff ff 01 e9 33 e7 ff ff e8 b4 27 a1 f8 <0f> 0b e9 b6 e7 ff ff e8 a8 27 a1 f8 49 8d bf f0 0c 00 00 48 b8 00 RSP: 0018:ffffc90003b2f830 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 000000000000ffff RCX: 0000000000000000 RDX: ffff888021273a80 RSI: ffffffff88e1bd4c RDI: 0000000000000003 RBP: ffffc90003b2f9d8 R08: 0000000000000003 R09: 000000000000ffff R10: 000000000000ffff R11: 0000000000000000 R12: ffff88802b28da00 R13: 00000000000000d0 R14: ffff88807e25b6d0 R15: ffff888023408000 FS: 0000555556a61300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055e5b11eb6e8 CR3: 0000000027c1b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __netdev_start_xmit include/linux/netdevice.h:4900 [inline] netdev_start_xmit include/linux/netdevice.h:4914 [inline] __dev_direct_xmit+0x504/0x730 net/core/dev.c:4300 dev_direct_xmit include/linux/netdevice.h:3088 [inline] packet_xmit+0x20a/0x390 net/packet/af_packet.c:285 packet_snd net/packet/af_packet.c:3075 [inline] packet_sendmsg+0x31a0/0x5150 net/packet/af_packet.c:3107 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg+0xde/0x190 net/socket.c:747 __sys_sendto+0x23a/0x340 net/socket.c:2142 __do_sys_sendto net/socket.c:2154 [inline] __se_sys_sendto net/socket.c:2150 [inline] __x64_sys_sendto+0xe1/0x1b0 net/socket.c:2150 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f123aaa1039 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc15d12058 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f123aaa1039 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000020000040 R09: 0000000000000014 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f123aa648c0 R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 Fixes: 1baf5ebf ("erspan: auto detect truncated packets.") Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Simon Horman <simon.horman@corigine.com> Link: https://lore.kernel.org/r/20230320163427.8096-1-edumazet@google.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>
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Li Zetao authored
There are memory leaks reported by kmemleak: unreferenced object 0xffff888106500800 (size 128): comm "modprobe", pid 1017, jiffies 4297787785 (age 67.152s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000970ce626>] __kmem_cache_alloc_node+0x20c/0x380 [<00000000fb5f78d9>] kmalloc_trace+0x2f/0xb0 [<000000000e947e2a>] idt77252_init_one+0x2847/0x3c90 [idt77252] [<000000006efb048e>] local_pci_probe+0xeb/0x1a0 ... unreferenced object 0xffff888106500b00 (size 128): comm "modprobe", pid 1017, jiffies 4297787785 (age 67.152s) hex dump (first 32 bytes): 00 20 3d 01 80 88 ff ff 00 20 3d 01 80 88 ff ff . =...... =..... f0 23 3d 01 80 88 ff ff 00 20 3d 01 00 00 00 00 .#=...... =..... backtrace: [<00000000970ce626>] __kmem_cache_alloc_node+0x20c/0x380 [<00000000fb5f78d9>] kmalloc_trace+0x2f/0xb0 [<00000000f451c5be>] alloc_scq.constprop.0+0x4a/0x400 [idt77252] [<00000000e6313849>] idt77252_init_one+0x28cf/0x3c90 [idt77252] The root cause is traced to the vc_maps which alloced in open_card_oam() are not freed in close_card_oam(). The vc_maps are used to record open connections, so when close a vc_map in close_card_oam(), the memory should be freed. Moreover, the ubr0 is not closed when close a idt77252 device, leading to the memory leak of vc_map and scq_info. Fix them by adding kfree in close_card_oam() and implementing new close_card_ubr0() to close ubr0. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by: Li Zetao <lizetao1@huawei.com> Reviewed-by: Francois Romieu <romieu@fr.zoreil.com> Link: https://lore.kernel.org/r/20230320143318.2644630-1-lizetao1@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>
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Álvaro Fernández Rojas authored
When BCM63xx internal switches are connected to switches with a 4-byte Broadcom tag, it does not identify the packet as VLAN tagged, so it adds one based on its PVID (which is likely 0). Right now, the packet is received by the BCM63xx internal switch and the 6-byte tag is properly processed. The next step would to decode the corresponding 4-byte tag. However, the internal switch adds an invalid VLAN tag after the 6-byte tag and the 4-byte tag handling fails. In order to fix this we need to remove the invalid VLAN tag after the 6-byte tag before passing it to the 4-byte tag decoding. Fixes: 964dbf18 ("net: dsa: tag_brcm: add support for legacy tags") Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Link: https://lore.kernel.org/r/20230319095540.239064-1-noltari@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>
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- 21 Mar, 2023 13 commits
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Dan Carpenter authored
The error handling dereferences "vport". There is nothing we can do if it is an error pointer except returning the error code. Fixes: 133dcfc5 ("net/mlx5: E-Switch, Alloc and free unique metadata for match") Signed-off-by: Dan Carpenter <error27@gmail.com> Reviewed-by: Roi Dayan <roid@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Maher Sanalla authored
When ETS configurations are queried by the user to get the mapping assignment between packet priority and traffic class, only priorities up to maximum TCs are queried from QTCT register in FW to retrieve their assigned TC, leaving the rest of the priorities mapped to the default TC #0 which might be misleading. Fix by querying the TC mapping of all priorities on each ETS query, regardless of the maximum number of TCs configured in FW. Fixes: 820c2c5e ("net/mlx5e: Read ETS settings directly from firmware") Signed-off-by: Maher Sanalla <msanalla@nvidia.com> Reviewed-by: Moshe Shemesh <moshe@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Emeel Hakim authored
First ASO WQE poll causes a cache miss in hardware hence the resut is delayed. It causes to the situation where such WQE is polled earlier than it is needed. Add logic to retry ASO CQ polling operation. Fixes: 739cfa34 ("net/mlx5: Make ASO poll CQ usable in atomic context") Signed-off-by: Emeel Hakim <ehakim@nvidia.com> Reviewed-by: Leon Romanovsky <leonro@nvidia.com> Reviewed-by: Raed Salem <raeds@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Roy Novich authored
mlx5e_port_max_linkspeed does not guarantee value assignment for speed. Avoid cases where link_speed might be used uninitialized. In case mlx5e_port_max_linkspeed fails, a default link speed of 50000 will be used for the calculations. Fixes: 3f6d08d1 ("net/mlx5e: Add RSS support for hairpin") Signed-off-by: Roy Novich <royno@nvidia.com> Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Reviewed-by: Aya Levin <ayal@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Lama Kayal authored
vport's mc, uc and multicast rules are not deleted in teardown path when EEH happens. Since the vport's promisc settings(uc, mc and all) in firmware are reset after EEH, mlx5 driver will try to delete the above rules in the initialization path. This cause kernel crash because these software rules are no longer valid. Fix by nullifying these rules right after delete to avoid accessing any dangling pointers. Call Trace: __list_del_entry_valid+0xcc/0x100 (unreliable) tree_put_node+0xf4/0x1b0 [mlx5_core] tree_remove_node+0x30/0x70 [mlx5_core] mlx5_del_flow_rules+0x14c/0x1f0 [mlx5_core] esw_apply_vport_rx_mode+0x10c/0x200 [mlx5_core] esw_update_vport_rx_mode+0xb4/0x180 [mlx5_core] esw_vport_change_handle_locked+0x1ec/0x230 [mlx5_core] esw_enable_vport+0x130/0x260 [mlx5_core] mlx5_eswitch_enable_sriov+0x2a0/0x2f0 [mlx5_core] mlx5_device_enable_sriov+0x74/0x440 [mlx5_core] mlx5_load_one+0x114c/0x1550 [mlx5_core] mlx5_pci_resume+0x68/0xf0 [mlx5_core] eeh_report_resume+0x1a4/0x230 eeh_pe_dev_traverse+0x98/0x170 eeh_handle_normal_event+0x3e4/0x640 eeh_handle_event+0x4c/0x370 eeh_event_handler+0x14c/0x210 kthread+0x168/0x1b0 ret_from_kernel_thread+0x5c/0x84 Fixes: a35f71f2 ("net/mlx5: E-Switch, Implement promiscuous rx modes vf request handling") Signed-off-by: Huy Nguyen <huyn@mellanox.com> Signed-off-by: Lama Kayal <lkayal@nvidia.com> Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Reviewed-by: Maor Dickman <maord@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Gavin Li authored
Upon entering switchdev mode, VF/SF representors are spawned in the devlink instance's net namespace, whereas the PF net device transforms into the uplink representor, remaining in the net namespace the PF net device was in. Therefore, if a PF net device's namespace is different from its parent devlink net namespace, entering switchdev mode can create an illegal situation where all representors sharing the same core device are NOT in the same net namespace. To avoid this issue, block entering switchdev mode for devices whose child netdev net namespace has diverged from the parent devlink's. Fixes: 7768d197 ("net/mlx5: E-Switch, Add control for encapsulation") Signed-off-by: Gavin Li <gavinl@nvidia.com> Reviewed-by: Gavi Teitz <gavi@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Gavin Li authored
Previously, NETNS_LOCAL was not set for uplink representors, inconsistent with VF representors, and allowed the uplink representor to be moved between net namespaces and separated from the VF representors it shares the core device with. Such usage would break the isolation model of namespaces, as devices in different namespaces would have access to shared memory. To solve this issue, set NETNS_LOCAL for uplink representors if eswitch is in switchdev mode. Fixes: 7a9fb35e ("net/mlx5e: Do not reload ethernet ports when changing eswitch mode") Signed-off-by: Gavin Li <gavinl@nvidia.com> Reviewed-by: Gavi Teitz <gavi@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Radoslaw Tyl authored
Initialize to zero structures to build a valid Tx Packet used for the filter programming. Fixes: a9219b33 ("i40e: VLAN field for flow director") Signed-off-by: Radoslaw Tyl <radoslawx.tyl@intel.com> Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Tested-by: Arpana Arland <arpanax.arland@intel.com> (A Contingent worker at Intel) Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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Stefan Assmann authored
When a system with E810 with existing VFs gets rebooted the following hang may be observed. Pid 1 is hung in iavf_remove(), part of a network driver: PID: 1 TASK: ffff965400e5a340 CPU: 24 COMMAND: "systemd-shutdow" #0 [ffffaad04005fa50] __schedule at ffffffff8b3239cb #1 [ffffaad04005fae8] schedule at ffffffff8b323e2d #2 [ffffaad04005fb00] schedule_hrtimeout_range_clock at ffffffff8b32cebc #3 [ffffaad04005fb80] usleep_range_state at ffffffff8b32c930 #4 [ffffaad04005fbb0] iavf_remove at ffffffffc12b9b4c [iavf] #5 [ffffaad04005fbf0] pci_device_remove at ffffffff8add7513 #6 [ffffaad04005fc10] device_release_driver_internal at ffffffff8af08baa #7 [ffffaad04005fc40] pci_stop_bus_device at ffffffff8adcc5fc #8 [ffffaad04005fc60] pci_stop_and_remove_bus_device at ffffffff8adcc81e #9 [ffffaad04005fc70] pci_iov_remove_virtfn at ffffffff8adf9429 #10 [ffffaad04005fca8] sriov_disable at ffffffff8adf98e4 #11 [ffffaad04005fcc8] ice_free_vfs at ffffffffc04bb2c8 [ice] #12 [ffffaad04005fd10] ice_remove at ffffffffc04778fe [ice] #13 [ffffaad04005fd38] ice_shutdown at ffffffffc0477946 [ice] #14 [ffffaad04005fd50] pci_device_shutdown at ffffffff8add58f1 #15 [ffffaad04005fd70] device_shutdown at ffffffff8af05386 #16 [ffffaad04005fd98] kernel_restart at ffffffff8a92a870 #17 [ffffaad04005fda8] __do_sys_reboot at ffffffff8a92abd6 #18 [ffffaad04005fee0] do_syscall_64 at ffffffff8b317159 #19 [ffffaad04005ff08] __context_tracking_enter at ffffffff8b31b6fc #20 [ffffaad04005ff18] syscall_exit_to_user_mode at ffffffff8b31b50d #21 [ffffaad04005ff28] do_syscall_64 at ffffffff8b317169 #22 [ffffaad04005ff50] entry_SYSCALL_64_after_hwframe at ffffffff8b40009b RIP: 00007f1baa5c13d7 RSP: 00007fffbcc55a98 RFLAGS: 00000202 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1baa5c13d7 RDX: 0000000001234567 RSI: 0000000028121969 RDI: 00000000fee1dead RBP: 00007fffbcc55ca0 R8: 0000000000000000 R9: 00007fffbcc54e90 R10: 00007fffbcc55050 R11: 0000000000000202 R12: 0000000000000005 R13: 0000000000000000 R14: 00007fffbcc55af0 R15: 0000000000000000 ORIG_RAX: 00000000000000a9 CS: 0033 SS: 002b During reboot all drivers PM shutdown callbacks are invoked. In iavf_shutdown() the adapter state is changed to __IAVF_REMOVE. In ice_shutdown() the call chain above is executed, which at some point calls iavf_remove(). However iavf_remove() expects the VF to be in one of the states __IAVF_RUNNING, __IAVF_DOWN or __IAVF_INIT_FAILED. If that's not the case it sleeps forever. So if iavf_shutdown() gets invoked before iavf_remove() the system will hang indefinitely because the adapter is already in state __IAVF_REMOVE. Fix this by returning from iavf_remove() if the state is __IAVF_REMOVE, as we already went through iavf_shutdown(). Fixes: 97457801 ("iavf: Add waiting so the port is initialized in remove") Fixes: a8417330 ("iavf: Fix race condition between iavf_shutdown and iavf_remove") Reported-by: Marius Cornea <mcornea@redhat.com> Signed-off-by: Stefan Assmann <sassmann@kpanic.de> Reviewed-by: Michal Kubiak <michal.kubiak@intel.com> Tested-by: Rafal Romanowski <rafal.romanowski@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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Michal Swiatkowski authored
Filters shouldn't be removed in VSI rebuild path. Removing them on PF VSI results in no rule for PF MAC after changing for example queues amount. Remove all filters only in the VSI remove flow. As unload should also cause the filter to be removed introduce, a new function ice_stop_eth(). It will unroll ice_start_eth(), so remove filters and close VSI. Fixes: 6624e780 ("ice: split ice_vsi_setup into smaller functions") Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Tested-by: Arpana Arland <arpanax.arland@intel.com> (A Contingent worker at Intel) Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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Michal Swiatkowski authored
Setting trust on VF should return EINVAL when there is no VF. Move checking for switchdev mode after checking if VF exists. Fixes: c54d209c ("ice: Wait for VF to be reset/ready before configuration") Signed-off-by: Michal Swiatkowski <michal.swiatkowski@intel.com> Signed-off-by: Kalyan Kodamagula <kalyan.kodamagula@intel.com> Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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Piotr Raczynski authored
Adding flow director filters stopped working correctly after commit 2fba7dc5 ("ice: Add support for XDP multi-buffer on Rx side"). As a result, only first flow director filter can be added, adding next filter leads to NULL pointer dereference attached below. Rx buffer handling and reallocation logic has been optimized, however flow director specific traffic was not accounted for. As a result driver handled those packets incorrectly since new logic was based on ice_rx_ring::first_desc which was not set in this case. Fix this by setting struct ice_rx_ring::first_desc to next_to_clean for flow director received packets. [ 438.544867] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 438.551840] #PF: supervisor read access in kernel mode [ 438.556978] #PF: error_code(0x0000) - not-present page [ 438.562115] PGD 7c953b2067 P4D 0 [ 438.565436] Oops: 0000 [#1] PREEMPT SMP NOPTI [ 438.569794] CPU: 0 PID: 0 Comm: swapper/0 Kdump: loaded Not tainted 6.2.0-net-bug #1 [ 438.577531] Hardware name: Intel Corporation M50CYP2SBSTD/M50CYP2SBSTD, BIOS SE5C620.86B.01.01.0005.2202160810 02/16/2022 [ 438.588470] RIP: 0010:ice_clean_rx_irq+0x2b9/0xf20 [ice] [ 438.593860] Code: 45 89 f7 e9 ac 00 00 00 8b 4d 78 41 31 4e 10 41 09 d5 4d 85 f6 0f 84 82 00 00 00 49 8b 4e 08 41 8b 76 1c 65 8b 3d 47 36 4a 3f <48> 8b 11 48 c1 ea 36 39 d7 0f 85 a6 00 00 00 f6 41 08 02 0f 85 9c [ 438.612605] RSP: 0018:ff8c732640003ec8 EFLAGS: 00010082 [ 438.617831] RAX: 0000000000000800 RBX: 00000000000007ff RCX: 0000000000000000 [ 438.624957] RDX: 0000000000000800 RSI: 0000000000000000 RDI: 0000000000000000 [ 438.632089] RBP: ff4ed275a2158200 R08: 00000000ffffffff R09: 0000000000000020 [ 438.639222] R10: 0000000000000000 R11: 0000000000000020 R12: 0000000000001000 [ 438.646356] R13: 0000000000000000 R14: ff4ed275d0daffe0 R15: 0000000000000000 [ 438.653485] FS: 0000000000000000(0000) GS:ff4ed2738fa00000(0000) knlGS:0000000000000000 [ 438.661563] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 438.667310] CR2: 0000000000000000 CR3: 0000007c9f0d6006 CR4: 0000000000771ef0 [ 438.674444] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 438.681573] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 438.688697] PKRU: 55555554 [ 438.691404] Call Trace: [ 438.693857] <IRQ> [ 438.695877] ? profile_tick+0x17/0x80 [ 438.699542] ice_msix_clean_ctrl_vsi+0x24/0x50 [ice] [ 438.702571] ice 0000:b1:00.0: VF 1: ctrl_vsi irq timeout [ 438.704542] __handle_irq_event_percpu+0x43/0x1a0 [ 438.704549] handle_irq_event+0x34/0x70 [ 438.704554] handle_edge_irq+0x9f/0x240 [ 438.709901] iavf 0000:b1:01.1: Failed to add Flow Director filter with status: 6 [ 438.714571] __common_interrupt+0x63/0x100 [ 438.714580] common_interrupt+0xb4/0xd0 [ 438.718424] iavf 0000:b1:01.1: Rule ID: 127 dst_ip: 0.0.0.0 src_ip 0.0.0.0 UDP: dst_port 4 src_port 0 [ 438.722255] </IRQ> [ 438.722257] <TASK> [ 438.722257] asm_common_interrupt+0x22/0x40 [ 438.722262] RIP: 0010:cpuidle_enter_state+0xc8/0x430 [ 438.722267] Code: 6e e9 25 ff e8 f9 ef ff ff 8b 53 04 49 89 c5 0f 1f 44 00 00 31 ff e8 d7 f1 24 ff 45 84 ff 0f 85 57 02 00 00 fb 0f 1f 44 00 00 <45> 85 f6 0f 88 85 01 00 00 49 63 d6 48 8d 04 52 48 8d 04 82 49 8d [ 438.722269] RSP: 0018:ffffffff86003e50 EFLAGS: 00000246 [ 438.784108] RAX: ff4ed2738fa00000 RBX: ffbe72a64fc01020 RCX: 0000000000000000 [ 438.791234] RDX: 0000000000000000 RSI: ffffffff858d84de RDI: ffffffff85893641 [ 438.798365] RBP: 0000000000000002 R08: 0000000000000002 R09: 000000003158af9d [ 438.805490] R10: 0000000000000008 R11: 0000000000000354 R12: ffffffff862365a0 [ 438.812622] R13: 000000661b472a87 R14: 0000000000000002 R15: 0000000000000000 [ 438.819757] cpuidle_enter+0x29/0x40 [ 438.823333] do_idle+0x1b6/0x230 [ 438.826566] cpu_startup_entry+0x19/0x20 [ 438.830492] rest_init+0xcb/0xd0 [ 438.833717] arch_call_rest_init+0xa/0x30 [ 438.837731] start_kernel+0x776/0xb70 [ 438.841396] secondary_startup_64_no_verify+0xe5/0xeb [ 438.846449] </TASK> Fixes: 2fba7dc5 ("ice: Add support for XDP multi-buffer on Rx side") Signed-off-by: Piotr Raczynski <piotr.raczynski@intel.com> Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Reviewed-by: Simon Horman <simon.horman@corigine.com> Tested-by: Arpana Arland <arpanax.arland@intel.com> (A Contingent worker at Intel) Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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Jiasheng Jiang authored
Add the free_percpu for the allocated "vf->hw.lmt_info" in order to avoid memory leak, same as the "pf->hw.lmt_info" in `drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c`. Fixes: 5c051207 ("octeontx2-pf: cn10k: Use runtime allocated LMTLINE region") Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Acked-by: Geethasowjanya Akula <gakula@marvell.com> Link: https://lore.kernel.org/r/20230317064337.18198-1-jiasheng@iscas.ac.cnSigned-off-by: Jakub Kicinski <kuba@kernel.org>
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- 20 Mar, 2023 7 commits
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David S. Miller authored
Geoff Levand says: ==================== net/ps3_gelic_net: DMA related fixes v9: Make rx_skb_size local to gelic_descr_prepare_rx. v8: Add more cpu_to_be32 calls. v7: Remove all cleanups, sync to spider net. v6: Reworked and cleaned up patches. v5: Some additional patch cleanups. v4: More patch cleanups. v3: Cleaned up patches as requested. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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Geoff Levand authored
The current Gelic Etherenet driver was checking the return value of its dma_map_single call, and not using the dma_mapping_error() routine. Fixes runtime problems like these: DMA-API: ps3_gelic_driver sb_05: device driver failed to check map error WARNING: CPU: 0 PID: 0 at kernel/dma/debug.c:1027 .check_unmap+0x888/0x8dc Fixes: 02c18891 ("ps3: gigabit ethernet driver for PS3, take3") Reviewed-by: Alexander Duyck <alexanderduyck@fb.com> Signed-off-by: Geoff Levand <geoff@infradead.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Geoff Levand authored
The Gelic Ethernet device needs to have the RX sk_buffs aligned to GELIC_NET_RXBUF_ALIGN, and also the length of the RX sk_buffs must be a multiple of GELIC_NET_RXBUF_ALIGN. The current Gelic Ethernet driver was not allocating sk_buffs large enough to allow for this alignment. Also, correct the maximum and minimum MTU sizes, and add a new preprocessor macro for the maximum frame size, GELIC_NET_MAX_FRAME. Fixes various randomly occurring runtime network errors. Fixes: 02c18891 ("ps3: gigabit ethernet driver for PS3, take3") Signed-off-by: Geoff Levand <geoff@infradead.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Tom Rix authored
clang with W=1 reports drivers/net/usb/plusb.c:65:1: error: unused function 'pl_clear_QuickLink_features' [-Werror,-Wunused-function] pl_clear_QuickLink_features(struct usbnet *dev, int val) ^ This static function is not used, so remove it. Signed-off-by: Tom Rix <trix@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Szymon Heidrich authored
Packet length retrieved from descriptor may be larger than the actual socket buffer length. In such case the cloned skb passed up the network stack will leak kernel memory contents. Additionally prevent integer underflow when size is less than ETH_FCS_LEN. Fixes: 55d7de9d ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver") Signed-off-by: Szymon Heidrich <szymon.heidrich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Zheng Wang authored
In emac_probe, &adpt->work_thread is bound with emac_work_thread. Then it will be started by timeout handler emac_tx_timeout or a IRQ handler emac_isr. If we remove the driver which will call emac_remove to make cleanup, there may be a unfinished work. The possible sequence is as follows: Fix it by finishing the work before cleanup in the emac_remove and disable timeout response. CPU0 CPU1 |emac_work_thread emac_remove | free_netdev | kfree(netdev); | |emac_reinit_locked |emac_mac_down |//use netdev Fixes: b9b17deb ("net: emac: emac gigabit ethernet controller driver") Signed-off-by: Zheng Wang <zyytlz.wz@163.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Vladimir Oltean authored
We collect the software statistics counters for RX bytes (reported to /proc/net/dev and to ethtool -S $dev | grep 'rx_bytes: ") at a time when skb->len has already been adjusted by the eth_type_trans() -> skb_pull_inline(skb, ETH_HLEN) call to exclude the L2 header. This means that when connecting 2 DSA interfaces back to back and sending 1 packet with length 100, the sending interface will report tx_bytes as incrementing by 100, and the receiving interface will report rx_bytes as incrementing by 86. Since accounting for that in scripts is quirky and is something that would be DSA-specific behavior (requiring users to know that they are running on a DSA interface in the first place), the proposal is that we treat it as a bug and fix it. This design bug has always existed in DSA, according to my analysis: commit 91da11f8 ("net: Distributed Switch Architecture protocol support") also updates skb->dev->stats.rx_bytes += skb->len after the eth_type_trans() call. Technically, prior to Florian's commit a86d8bec ("net: dsa: Factor bottom tag receive functions"), each and every vendor-specific tagging protocol driver open-coded the same bug, until the buggy code was consolidated into something resembling what can be seen now. So each and every driver should have its own Fixes: tag, because of their different histories until the convergence point. I'm not going to do that, for the sake of simplicity, but just blame the oldest appearance of buggy code. There are 2 ways to fix the problem. One is the obvious way, and the other is how I ended up doing it. Obvious would have been to move dev_sw_netstats_rx_add() one line above eth_type_trans(), and below skb_push(skb, ETH_HLEN). But DSA processing is not as simple as that. We count the bytes after removing everything DSA-related from the packet, to emulate what the packet's length was, on the wire, when the user port received it. When eth_type_trans() executes, dsa_untag_bridge_pvid() has not run yet, so in case the switch driver requests this behavior - commit 412a1526 ("net: dsa: untag the bridge pvid from rx skbs") has the details - the obvious variant of the fix wouldn't have worked, because the positioning there would have also counted the not-yet-stripped VLAN header length, something which is absent from the packet as seen on the wire (there it may be untagged, whereas software will see it as PVID-tagged). Fixes: f613ed66 ("net: dsa: Add support for 64-bit statistics") Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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