threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
25 lines
893 B
Plaintext
25 lines
893 B
Plaintext
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The "environmental" rules for authors of any new tc actions are:
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1) If you stealeth or borroweth any packet thou shalt be branching
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from the righteous path and thou shalt cloneth.
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For example if your action queues a packet to be processed later,
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or intentionally branches by redirecting a packet, then you need to
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clone the packet.
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2) If you munge any packet thou shalt call pskb_expand_head in the case
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someone else is referencing the skb. After that you "own" the skb.
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3) Dropping packets you don't own is a no-no. You simply return
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TC_ACT_SHOT to the caller and they will drop it.
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The "environmental" rules for callers of actions (qdiscs etc) are:
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*) Thou art responsible for freeing anything returned as being
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TC_ACT_SHOT/STOLEN/QUEUED. If none of TC_ACT_SHOT/STOLEN/QUEUED is
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returned, then all is great and you don't need to do anything.
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Post on netdev if something is unclear.
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