Revert "[Deepin-Kernel-SIG] [linux 6.6-y] [Deepin] net: Fix kabi breakage for skbuff by exclude header"

[opsiff]

Reverts #1379

Summary by Sourcery

Enhancements:

• Remove Deepin KABI reserve conditional logic and custom GRO_MAX_HEAD definition from skbuff, relying on the upstream GRO header behavior again.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Reverts a previous Deepin-specific KABI workaround around GRO header sizing in skbuff, restoring the standard inclusion of <net/gro.h> without CONFIG_DEEPIN_KABI_RESERVE conditionals and custom GRO_MAX_HEAD macro.

File-Level Changes

Change	Details	Files
Remove Deepin-specific CONFIG_DEEPIN_KABI_RESERVE conditional around GRO handling and revert to the vanilla <net/gro.h> include.	Unconditionally include the standard <net/gro.h> header in skbuff.c Remove the CONFIG_DEEPIN_KABI_RESERVE preprocessor guard block around GRO-related code Delete the Deepin-specific GRO_MAX_HEAD macro definition tied to MAX_HEADER + 128	net/core/skbuff.c

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[deepin-ci-robot]

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[sourcery-ai]

Hey - I've left some high level feedback:

• Since CONFIG_DEEPIN_KABI_RESERVE is no longer special-cased here, double-check that there are no remaining references elsewhere that still assume a custom GRO_MAX_HEAD or different skb headroom when this config is set.
• Consider briefly documenting in the commit message why reverting to the upstream gro.h behavior is now safe for Deepin-specific KABI requirements, to clarify the rationale for future maintainers.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- Since CONFIG_DEEPIN_KABI_RESERVE is no longer special-cased here, double-check that there are no remaining references elsewhere that still assume a custom GRO_MAX_HEAD or different skb headroom when this config is set.
- Consider briefly documenting in the commit message why reverting to the upstream gro.h behavior is now safe for Deepin-specific KABI requirements, to clarify the rationale for future maintainers.

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[opsiff]

#1501