Packets dropped on mt7615 for A-MSDU transmissions
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- Dominant language
- C
- Stars
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Description
Hi,
In trying to figure out what's going on in issue 387: https://github.com/openwrt/mt76/issues/387
I found that packets are dropped by the mt7615 driver (at least on my winstars 538a6) when sent from another router as an A-MSDU aggregated packet. Large pings (with -s 2000 for instance) are replied to by the mt7615 router when sent as "fragmented ip" packets, but not when sent as "a-msdu" packets. See wireshark sniff below (from a 3rd machine monitoring traffic in the middle).
Is A-MSDU (and A-MPDU) supported by mt76? At least for reception (rx)? The driver advertises that it is (in "iw phy0 info").
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First steps
- Read the whole issue, then the project's contributing guide.
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- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with issue 387 and reproduce the reported behavior on an mt7615 device, comparing large pings sent as fragmented IP packets versus A-MSDU packets. Inspect the mt7615 driver's advertised capabilities in iw phy0 info and the accompanying Wireshark capture; done means determining whether RX A-MSDU/A-MPDU handling is supported and why these packets are dropped.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c, linux
- Domain
- networking, operating-systems
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100