use bpf global for netdev_max_backlog as ksym changes in 6.9#88
Merged
alan-maguire merged 1 commit intomainfrom May 17, 2024
Merged
use bpf global for netdev_max_backlog as ksym changes in 6.9#88alan-maguire merged 1 commit intomainfrom
alan-maguire merged 1 commit intomainfrom
Conversation
net_buffer_tuner.so was failing to load BTF due to a failure to find netdev_max_backlog ksym. netdev_max_backlog was an int prior to 6.9 then it got added to a netdev hotpath struct; rather than using it in calculations retrieve the sysctl value and set a bpf global for use in bpf prog context; update it in userspace when we bump sysctl value. Reported-by: HippieMitch <https://github.com/HippieMitch> Signed-off-by: Alan Maguire <[email protected]>
oracle-contributor-agreement
bot
added
the
OCA Verified
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
net_buffer_tuner.so was failing to load BTF due to a failure to find netdev_max_backlog ksym.
netdev_max_backlog was an int prior to 6.9 then it got added to a netdev hotpath struct; rather than using it in calculations retrieve the sysctl value and set a bpf global for use in bpf prog context; update it in userspace when we bump sysctl value.
Reported-by: HippieMitch https://github.com/HippieMitch