Date: Mon, 15 Apr 2024 14:32:11 -0400 From: Cheng Cui <cc@freebsd.org> To: wireless@freebsd.org Subject: Weekly Development report(Apr 08 ~ Apr 12) on the iwlwifi WiFi project Message-ID: <CAGaXuiJ9H9E6H8OOtKg9bDoYpyk%2B2_gQ7bot0HF58a5ytEiPgg@mail.gmail.com>
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[-- Attachment #1 --]
Still working on the HW key/encryption/decryption support under the
`LKPI_80211_HW_CRYPTO` block.
- This week I was mainly testing different ideas and digging up
different code paths to see any clue that leads to HW crypto offload
malfunction.
1. Firstly, I figured out how to reproduce the malfunction in Linux
kernel, with the way to nullify info->control.hw_key right before
iwl_mvm_set_tx_params() inside iwl_mvm_tx_mpdu(). I added this
info in the
tracking PR 277996
<https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=277996>.
2. We(adrian@ bz@ and me) are in sync with the issue. Adrian is very
kind and introduced some related work background.
3. So far, some missing flags, e.g. IEEE80211_KEY_FLAG_PAIRWISE
or ieee80211_tx_info_flags do not help. And my blind guess of
shrinking ieee80211_tx_info size to match Linux skb->cb 48 Byte size does
not seem to work either.
Will again dig up the driver hw key setup path in Linux and investigate.
--
Best Regards,
Cheng Cui
[-- Attachment #2 --]
<div dir="ltr">Still working on the HW key/encryption/decryption support under the `LKPI_80211_HW_CRYPTO` block.<div><br></div><div><ul><li>This week I was mainly testing different ideas and digging up different code paths to see any clue that leads to HW crypto offload malfunction.<br></li></ul><ol><ol><li>Firstly, I figured out how to reproduce the malfunction in Linux kernel, with the way to nullify info->control.hw_key right before iwl_mvm_set_tx_params() inside iwl_mvm_tx_mpdu(). I added this info in the tracking PR <a href="https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=277996" target="_blank">277996</a>.</li><li>We(adrian@ bz@ and me) are in sync with the issue. Adrian is very kind and introduced some related work background.</li><li>So far, some missing flags, e.g. IEEE80211_KEY_FLAG_PAIRWISE or ieee80211_tx_info_flags do not help. And my blind guess of shrinking ieee80211_tx_info size to match Linux skb->cb 48 Byte size does not seem to work either.</li></ol></ol>Will again dig up the driver hw key setup path in Linux and investigate.<br><div><br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div></div>Best Regards,<div>Cheng Cui</div></div></div></div></div>
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