ipv6: Support new TSO without HBH #1329
Open
Conversation
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
Currently, BIG TCP IPv6 inserts a hop-by-hop extension header with a jumbo payload option to reflect the real length of the packet bigger than 65535 bytes. New kernels will drop this extension header and just calculate the packet length from skb->len, like it's currently done for BIG TCP IPv4. Reflect the future kernel change in tcpdump and support parsing such packets. Signed-off-by: Maxim Mikityanskiy <[email protected]>
|
Cc @fxlb if you have a chance to review, that would be awesome. tl;dr: from the kernel side we plan to align big tcp ipv6 to the way big tcp ipv4 is handled today. |
|
Hi @guyharris do you have a chance to take a look? Thanks so much |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
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Outdated suggestions cannot be applied.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.
Currently, BIG TCP IPv6 inserts a hop-by-hop extension header with a jumbo payload option to reflect the real length of the packet bigger than 65535 bytes. New kernels will drop this extension header and just calculate the packet length from skb->len, like it's currently done for BIG TCP IPv4.
Reflect the future kernel change in tcpdump and support parsing such packets.
Kernel ref: https://lore.kernel.org/netdev/[email protected]/