skbtrace v2: A trace infrastructure for networking subsystem
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- v1 Latest3 patches 8 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/3 | skbtrace v2: core feature and common eventsinclude/ include/ include/ +12 more | +177 | 6 replies | |
| 2/3 | skbtrace v2: TCP/IPv4 family supportinclude/ include/ include/ +13 more | +125 | 0 replies | |
| 3/3 | skbtrace v2: TCP/IPv6 family supportinclude/ net/ net/ +3 more | +30 | 0 replies |
Reviews trailers per patch
None of the 3 patches has a Reviewed-by or Acked-by.
| Patch | Li Yu |
|---|---|
| 1/3 | Sign-off-by |
| 2/3 | Sign-off-by |
| 3/3 | Sign-off-by |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [PATCH 0/3] skbtrace v2: A trace infrastructure for networking subsystem
Hi,
This patch set introduces to the tracing infrastructure for networking
subsystem, they are based on v3.6 source code.
The changes from last version (v1):
1. IPv4 mapped IPv6 sockets support, I found many applications use this mean to live on double stack environment.
2. The BPF filter for connection based events, skbtrace constructs a temporarily sk_buff to run BPF program.
3. Add three TCP trace events for RTTM, show active connection information, TCP internal timers. and show more states in tcp_ca_state event.
4. Introduce to primary and secondary event support. That is secondary event only would be exported after its primary event is triggered. This could be used for reduce gathered trace points more, we can see this is another kind of trace point filter.
5. Userland utility modularizaion.
6. Code refactoring and bug fixes.
I am going to add some sk_buff based events in next version (v3), so
we will could know such like how a sk_buff pass stack, how long it stay in stack, how TSO/GSO/SACK/... split/merge them, and so on.
You can get whole kernel source tree at github:
https://github.com/Rover-Yu/skbtrace-userland
https://github.com/Rover-Yu/skbtrace-kernel
Welcome for suggestions.
Thanks.
Yu