drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_rx.c

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_rx.c

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_rx.c
Extension
.c
Size
21816 bytes
Lines
809
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 accel_rule {
	struct work_struct work;
	struct mlx5e_priv *priv;
	struct mlx5_flow_handle *rule;
};

#define PROGRESS_PARAMS_WRITE_UNIT	64
#define PROGRESS_PARAMS_PADDED_SIZE	\
		(ALIGN(sizeof(struct mlx5_wqe_tls_progress_params_seg), \
		       PROGRESS_PARAMS_WRITE_UNIT))

struct mlx5e_ktls_rx_resync_buf {
	union {
		struct mlx5_wqe_tls_progress_params_seg progress;
		u8 pad[PROGRESS_PARAMS_PADDED_SIZE];
	} ____cacheline_aligned_in_smp;
	dma_addr_t dma_addr;
	struct mlx5e_ktls_offload_context_rx *priv_rx;
};

enum {
	MLX5E_PRIV_RX_FLAG_DELETING,
	MLX5E_NUM_PRIV_RX_FLAGS,
};

struct mlx5e_ktls_rx_resync_ctx {
	struct tls_offload_resync_async core;
	struct work_struct work;
	struct mlx5e_priv *priv;
	refcount_t refcnt;
	__be64 sw_rcd_sn_be;
	u32 seq;
};

struct mlx5e_ktls_offload_context_rx {
	union mlx5e_crypto_info crypto_info;
	struct accel_rule rule;
	struct sock *sk;
	struct mlx5e_rq_stats *rq_stats;
	struct mlx5e_tls_sw_stats *sw_stats;
	struct completion add_ctx;
	struct mlx5e_tir tir;
	struct mlx5_crypto_dek *dek;
	u32 rxq;
	DECLARE_BITMAP(flags, MLX5E_NUM_PRIV_RX_FLAGS);

	/* resync */
	spinlock_t lock; /* protects resync fields */
	struct mlx5e_ktls_rx_resync_ctx resync;
	struct list_head list;
};

static bool mlx5e_ktls_priv_rx_put(struct mlx5e_ktls_offload_context_rx *priv_rx)
{
	if (!refcount_dec_and_test(&priv_rx->resync.refcnt))
		return false;

	kfree(priv_rx);
	return true;
}

static void mlx5e_ktls_priv_rx_get(struct mlx5e_ktls_offload_context_rx *priv_rx)
{
	refcount_inc(&priv_rx->resync.refcnt);
}

struct mlx5e_ktls_resync_resp {
	/* protects list changes */
	spinlock_t lock;
	struct list_head list;
};

void mlx5e_ktls_rx_resync_destroy_resp_list(struct mlx5e_ktls_resync_resp *resp_list)
{
	kvfree(resp_list);
}

struct mlx5e_ktls_resync_resp *
mlx5e_ktls_rx_resync_create_resp_list(void)
{
	struct mlx5e_ktls_resync_resp *resp_list;

	resp_list = kvzalloc_obj(*resp_list);
	if (!resp_list)
		return ERR_PTR(-ENOMEM);

	INIT_LIST_HEAD(&resp_list->list);
	spin_lock_init(&resp_list->lock);

	return resp_list;

Annotation

Implementation Notes