Bug #7975: dpdk: CPU exclude logic is broken - Suricata - Open Information Security Foundation

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Bug #7975

closed

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dpdk: CPU exclude logic is broken

Bug #7975: dpdk: CPU exclude logic is broken

Added by Lukas Sismis 6 months ago. Updated 5 months ago.

Status:

Closed

Priority:

Normal

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Target version:

Affected Versions:

Effort:

Difficulty:

Label:

Description

The exclude logic incorrectly performs the XOR operation. While it works when the worker cores occupy all cores, it is still not a correct operation.
The example might be when a core is affined to only management and not worker threads. With the XOR operation, it would set the affinity to the worker set.
(1 XOR 0 -> 1, where in fact the desired outcome is 0)

Subtasks 2 (0 open — 2 closed)

OT Updated by OISF Ticketbot 6 months ago Actions
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#1

Subtask #7976 added

OT Updated by OISF Ticketbot 6 months ago Actions
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#2

Label deleted (~~Needs backport to 8.0~~)

OT Updated by OISF Ticketbot 6 months ago Actions
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#3

Subtask #7977 added

OT Updated by OISF Ticketbot 6 months ago Actions
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#4

Label deleted (~~Needs backport to 7.0~~)

LS Updated by Lukas Sismis 6 months ago Actions
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#5

Status changed from In Progress to Resolved

https://github.com/OISF/suricata/pull/13954

LS Updated by Lukas Sismis 5 months ago Actions
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#6

Status changed from Resolved to Closed

SB Updated by Shivani Bhardwaj 5 months ago Actions
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#7

Subject changed from dpdk: fix the CPU exclude logic to dpdk: broken CPU exclude logic

SB Updated by Shivani Bhardwaj 5 months ago Actions
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#8

Subject changed from dpdk: broken CPU exclude logic to dpdk: CPU exclude logic is broken

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