drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_flex_keys.c

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_flex_keys.c

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_flex_keys.c
Extension
.c
Size
14831 bytes
Lines
367
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.

Dependency Surface

Detected Declarations

Annotated Snippet

struct mlxsw_sp2_afk_block_layout {
	unsigned short offset;
	struct mlxsw_item item;
};

#define MLXSW_SP2_AFK_BLOCK_LAYOUT(_block, _offset, _shift)			\
	{									\
		.offset = _offset,						\
		{								\
			.shift = _shift,					\
			.size = {.bits = MLXSW_SP2_AFK_BITS_PER_BLOCK},		\
			.name = #_block,					\
		}								\
	}									\

static const struct mlxsw_sp2_afk_block_layout mlxsw_sp2_afk_blocks_layout[] = {
	MLXSW_SP2_AFK_BLOCK_LAYOUT(block0, 0x30, 0),
	MLXSW_SP2_AFK_BLOCK_LAYOUT(block1, 0x2C, 4),
	MLXSW_SP2_AFK_BLOCK_LAYOUT(block2, 0x28, 8),
	MLXSW_SP2_AFK_BLOCK_LAYOUT(block3, 0x24, 12),
	MLXSW_SP2_AFK_BLOCK_LAYOUT(block4, 0x20, 16),
	MLXSW_SP2_AFK_BLOCK_LAYOUT(block5, 0x1C, 20),
	MLXSW_SP2_AFK_BLOCK_LAYOUT(block6, 0x18, 24),
	MLXSW_SP2_AFK_BLOCK_LAYOUT(block7, 0x14, 28),
	MLXSW_SP2_AFK_BLOCK_LAYOUT(block8, 0x0C, 0),
	MLXSW_SP2_AFK_BLOCK_LAYOUT(block9, 0x08, 4),
	MLXSW_SP2_AFK_BLOCK_LAYOUT(block10, 0x04, 8),
	MLXSW_SP2_AFK_BLOCK_LAYOUT(block11, 0x00, 12),
};

static void __mlxsw_sp2_afk_block_value_set(char *output, int block_index,
					    u64 block_value)
{
	const struct mlxsw_sp2_afk_block_layout *block_layout;

	if (WARN_ON(block_index < 0 ||
		    block_index >= ARRAY_SIZE(mlxsw_sp2_afk_blocks_layout)))
		return;

	block_layout = &mlxsw_sp2_afk_blocks_layout[block_index];
	__mlxsw_item_set64(output + block_layout->offset,
			   &block_layout->item, 0, block_value);
}

static void mlxsw_sp2_afk_encode_block(char *output, int block_index,
				       char *block)
{
	u64 block_value = mlxsw_sp2_afk_block_value_get(block);

	__mlxsw_sp2_afk_block_value_set(output, block_index, block_value);
}

static void mlxsw_sp2_afk_clear_block(char *output, int block_index)
{
	__mlxsw_sp2_afk_block_value_set(output, block_index, 0);
}

const struct mlxsw_afk_ops mlxsw_sp2_afk_ops = {
	.blocks		= mlxsw_sp2_afk_blocks,
	.blocks_count	= ARRAY_SIZE(mlxsw_sp2_afk_blocks),
	.encode_block	= mlxsw_sp2_afk_encode_block,
	.clear_block	= mlxsw_sp2_afk_clear_block,
};

static const struct mlxsw_afk_element_inst mlxsw_sp_afk_element_info_mac_5b[] = {
	MLXSW_AFK_ELEMENT_INST_U32(VID, 0x04, 18, 12),
	MLXSW_AFK_ELEMENT_INST_EXT_U32(SRC_SYS_PORT, 0x04, 0, 9, -1, true), /* RX_ACL_SYSTEM_PORT */
};

static const struct mlxsw_afk_element_inst mlxsw_sp_afk_element_info_ipv4_1b[] = {
	MLXSW_AFK_ELEMENT_INST_BUF(SRC_IP_0_31, 0x04, 4),
};

static const struct mlxsw_afk_element_inst mlxsw_sp_afk_element_info_ipv4_5b[] = {
	MLXSW_AFK_ELEMENT_INST_U32(VIRT_ROUTER, 0x04, 20, 12),
};

static const struct mlxsw_afk_element_inst mlxsw_sp_afk_element_info_ipv6_2b[] = {
	MLXSW_AFK_ELEMENT_INST_U32(VIRT_ROUTER_MSB, 0x00, 0, 4),
	MLXSW_AFK_ELEMENT_INST_BUF(DST_IP_96_127, 0x04, 4),
};

static const struct mlxsw_afk_block mlxsw_sp4_afk_blocks[] = {
	MLXSW_AFK_BLOCK_HIGH_ENTROPY(0x10, mlxsw_sp_afk_element_info_mac_0),
	MLXSW_AFK_BLOCK_HIGH_ENTROPY(0x11, mlxsw_sp_afk_element_info_mac_1),
	MLXSW_AFK_BLOCK(0x12, mlxsw_sp_afk_element_info_mac_2),
	MLXSW_AFK_BLOCK(0x13, mlxsw_sp_afk_element_info_mac_3),
	MLXSW_AFK_BLOCK(0x14, mlxsw_sp_afk_element_info_mac_4),
	MLXSW_AFK_BLOCK_HIGH_ENTROPY(0x1A, mlxsw_sp_afk_element_info_mac_5b),
	MLXSW_AFK_BLOCK_HIGH_ENTROPY(0x38, mlxsw_sp_afk_element_info_ipv4_0),

Annotation

Implementation Notes