drivers/net/ethernet/rocker/rocker_tlv.h
Source file repositories/reference/linux-study-clean/drivers/net/ethernet/rocker/rocker_tlv.h
File Facts
- System
- Linux kernel
- Corpus path
drivers/net/ethernet/rocker/rocker_tlv.h- Extension
.h- Size
- 5570 bytes
- Lines
- 210
- 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
linux/types.hrocker_hw.hrocker.h
Detected Declarations
function Copyrightfunction rocker_tlv_okfunction rocker_tlv_lenfunction rocker_tlv_total_sizefunction rocker_tlv_padlenfunction rocker_tlv_typefunction rocker_tlv_lenfunction rocker_tlv_get_u8function rocker_tlv_get_u16function rocker_tlv_get_be16function rocker_tlv_get_u32function rocker_tlv_get_u64function rocker_tlv_parse_nestedfunction rocker_tlv_parse_descfunction rocker_tlv_startfunction rocker_tlv_put_u8function rocker_tlv_put_u16function rocker_tlv_put_be16function rocker_tlv_put_u32function rocker_tlv_put_be32function rocker_tlv_put_u64function rocker_tlv_nest_startfunction rocker_tlv_nest_endfunction rocker_tlv_nest_cancel
Annotated Snippet
#ifndef _ROCKER_TLV_H
#define _ROCKER_TLV_H
#include <linux/types.h>
#include "rocker_hw.h"
#include "rocker.h"
#define ROCKER_TLV_ALIGNTO 8U
#define ROCKER_TLV_ALIGN(len) \
(((len) + ROCKER_TLV_ALIGNTO - 1) & ~(ROCKER_TLV_ALIGNTO - 1))
#define ROCKER_TLV_HDRLEN ROCKER_TLV_ALIGN(sizeof(struct rocker_tlv))
/* <------- ROCKER_TLV_HDRLEN -------> <--- ROCKER_TLV_ALIGN(payload) --->
* +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
* | Header | Pad | Payload | Pad |
* | (struct rocker_tlv) | ing | | ing |
* +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
* <--------------------------- tlv->len -------------------------->
*/
static inline struct rocker_tlv *rocker_tlv_next(const struct rocker_tlv *tlv,
int *remaining)
{
int totlen = ROCKER_TLV_ALIGN(tlv->len);
*remaining -= totlen;
return (struct rocker_tlv *) ((char *) tlv + totlen);
}
static inline int rocker_tlv_ok(const struct rocker_tlv *tlv, int remaining)
{
return remaining >= (int) ROCKER_TLV_HDRLEN &&
tlv->len >= ROCKER_TLV_HDRLEN &&
tlv->len <= remaining;
}
#define rocker_tlv_for_each(pos, head, len, rem) \
for (pos = head, rem = len; \
rocker_tlv_ok(pos, rem); \
pos = rocker_tlv_next(pos, &(rem)))
#define rocker_tlv_for_each_nested(pos, tlv, rem) \
rocker_tlv_for_each(pos, rocker_tlv_data(tlv), \
rocker_tlv_len(tlv), rem)
static inline int rocker_tlv_attr_size(int payload)
{
return ROCKER_TLV_HDRLEN + payload;
}
static inline int rocker_tlv_total_size(int payload)
{
return ROCKER_TLV_ALIGN(rocker_tlv_attr_size(payload));
}
static inline int rocker_tlv_padlen(int payload)
{
return rocker_tlv_total_size(payload) - rocker_tlv_attr_size(payload);
}
static inline int rocker_tlv_type(const struct rocker_tlv *tlv)
{
return tlv->type;
}
static inline void *rocker_tlv_data(const struct rocker_tlv *tlv)
{
return (char *) tlv + ROCKER_TLV_HDRLEN;
}
static inline int rocker_tlv_len(const struct rocker_tlv *tlv)
{
return tlv->len - ROCKER_TLV_HDRLEN;
}
static inline u8 rocker_tlv_get_u8(const struct rocker_tlv *tlv)
{
return *(u8 *) rocker_tlv_data(tlv);
}
static inline u16 rocker_tlv_get_u16(const struct rocker_tlv *tlv)
{
return *(u16 *) rocker_tlv_data(tlv);
}
static inline __be16 rocker_tlv_get_be16(const struct rocker_tlv *tlv)
{
return *(__be16 *) rocker_tlv_data(tlv);
}
Annotation
- Immediate include surface: `linux/types.h`, `rocker_hw.h`, `rocker.h`.
- Detected declarations: `function Copyright`, `function rocker_tlv_ok`, `function rocker_tlv_len`, `function rocker_tlv_total_size`, `function rocker_tlv_padlen`, `function rocker_tlv_type`, `function rocker_tlv_len`, `function rocker_tlv_get_u8`, `function rocker_tlv_get_u16`, `function rocker_tlv_get_be16`.
- 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.