Vladimir Oltean 95706be13b net: mscc: ocelot: create a function that replaces an existing VCAP filter ... VCAP (Versatile Content Aware Processor) is the TCAM-based engine behind tc flower offload on ocelot, among other things. The ingress port mask on which VCAP rules match is present as a bit field in the actual key of the rule. This means that it is possible for a rule to be shared among multiple source ports. When the rule is added one by one on each desired port, that the ingress port mask of the key must be edited and rewritten to hardware. But the API in ocelot_vcap.c does not allow for this. For one thing, ocelot_vcap_filter_add() and ocelot_vcap_filter_del() are not symmetric, because ocelot_vcap_filter_add() works with a preallocated and prepopulated filter and programs it to hardware, and ocelot_vcap_filter_del() does both the job of removing the specified filter from hardware, as well as kfreeing it. That is to say, the only option of editing a filter in place, which is to delete it, modify the structure and add it back, does not work because it results in use-after-free. This patch introduces ocelot_vcap_filter_replace, which trivially reprograms a VCAP entry to hardware, at the exact same index at which it existed before, without modifying any list or allocating any memory. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2021-11-26 11:38:20 -08:00
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arc	clocksource/drivers/arc_timer: Eliminate redefined macro error	2021-10-16 22:15:01 +02:00
at91	ARM: at91: ddr: add registers definitions for sama7g5's ddr	2021-07-19 14:32:12 +02:00
bcm2835	firmware: raspberrypi: Introduce devm_rpi_firmware_get()	2021-03-22 17:59:51 +01:00
canaan	clk: Add RISC-V Canaan Kendryte K210 clock driver	2021-02-22 17:51:04 -08:00
fsl	soc: fsl: dpio: add Net DIM integration	2021-10-15 14:32:41 +01:00
imx	ARM: imx: Initialize SoC ID on i.MX50	2021-05-13 15:42:21 +08:00
mediatek	IOMMU Updates for Linux v5.12	2021-02-22 10:31:29 -08:00
microchip	mbox: add polarfire soc system controller mailbox	2021-06-26 12:06:48 -05:00
mscc	net: mscc: ocelot: create a function that replaces an existing VCAP filter	2021-11-26 11:38:20 -08:00
qcom	soc: qcom: spm: Implement support for SAWv4.1, SDM630/660 L2 AVS	2021-09-21 17:41:48 -05:00
rockchip	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288	2019-06-05 17:36:37 +02:00
sa1100	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
sifive	riscv: move sifive_l2_cache.h to include/soc	2020-01-12 10:12:44 -08:00
tegra	soc/tegra: pm: Make stubs usable for compile testing	2021-10-04 21:27:40 +02:00