drivers/net/wireless/mediatek/mt7601u/util.c

File Facts

System

Linux kernel

Corpus path

drivers/net/wireless/mediatek/mt7601u/util.c

Extension

.c

Size

590 bytes

Lines

35

Domain

Driver Families

Bucket

drivers/net

Inferred role

Driver Families: implementation source

Status

source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• mt7601u.h

Detected Declarations

• function Copyright
• function mt76_insert_hdr_pad

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
 */

#include "mt7601u.h"

void mt76_remove_hdr_pad(struct sk_buff *skb)
{
	int len = ieee80211_get_hdrlen_from_skb(skb);

	memmove(skb->data + 2, skb->data, len);
	skb_pull(skb, 2);
}

int mt76_insert_hdr_pad(struct sk_buff *skb)
{
	int len = ieee80211_get_hdrlen_from_skb(skb);
	int ret;

	if (len % 4 == 0)
		return 0;

	ret = skb_cow(skb, 2);
	if (ret)
		return ret;

	skb_push(skb, 2);
	memmove(skb->data, skb->data + 2, len);

	skb->data[len] = 0;
	skb->data[len + 1] = 0;
	return 0;
}

Annotation

• Immediate include surface: `mt7601u.h`.
• Detected declarations: `function Copyright`, `function mt76_insert_hdr_pad`.
• Atlas domain: Driver Families / drivers/net.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.