drivers/net/ethernet/intel/iavf/iavf_fdir.h

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/intel/iavf/iavf_fdir.h

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/intel/iavf/iavf_fdir.h
Extension
.h
Size
4081 bytes
Lines
143
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 iavf_flex_word {
	u16 offset;
	u16 word;
};

struct iavf_ipv4_addrs {
	__be32 src_ip;
	__be32 dst_ip;
};

struct iavf_ipv6_addrs {
	struct in6_addr src_ip;
	struct in6_addr dst_ip;
};

struct iavf_fdir_eth {
	__be16 etype;
};

struct iavf_fdir_ip {
	union {
		struct iavf_ipv4_addrs v4_addrs;
		struct iavf_ipv6_addrs v6_addrs;
	};
	__be16 src_port;
	__be16 dst_port;
	__be32 l4_header;	/* first 4 bytes of the layer 4 header */
	__be32 spi;		/* security parameter index for AH/ESP */
	union {
		u8 tos;
		u8 tclass;
	};
	u8 proto;
};

struct iavf_fdir_extra {
	u32 usr_def[IAVF_FLEX_WORD_NUM];
};

/* bookkeeping of Flow Director filters */
struct iavf_fdir_fltr {
	enum iavf_fdir_fltr_state_t state;
	struct list_head list;

	enum iavf_fdir_flow_type flow_type;

	struct iavf_fdir_eth eth_data;
	struct iavf_fdir_eth eth_mask;

	struct iavf_fdir_ip ip_data;
	struct iavf_fdir_ip ip_mask;

	struct iavf_fdir_extra ext_data;
	struct iavf_fdir_extra ext_mask;

	enum virtchnl_action action;

	/* flex byte filter data */
	u8 ip_ver; /* used to adjust the flex offset, 4 : IPv4, 6 : IPv6 */
	u8 flex_cnt;
	struct iavf_flex_word flex_words[IAVF_FLEX_WORD_NUM];

	u32 flow_id;

	u32 cls_u32_handle; /* for FDIR added via tc u32 */
	u32 loc;	/* Rule location inside the flow table */
	u32 q_index;

	struct virtchnl_fdir_add vc_add_msg;
};

static inline bool iavf_is_raw_fdir(struct iavf_fdir_fltr *fltr)
{
	return !fltr->vc_add_msg.rule_cfg.proto_hdrs.count;
}

int iavf_validate_fdir_fltr_masks(struct iavf_adapter *adapter,
				  struct iavf_fdir_fltr *fltr);
int iavf_fill_fdir_add_msg(struct iavf_adapter *adapter, struct iavf_fdir_fltr *fltr);
void iavf_print_fdir_fltr(struct iavf_adapter *adapter, struct iavf_fdir_fltr *fltr);
bool iavf_fdir_is_dup_fltr(struct iavf_adapter *adapter, struct iavf_fdir_fltr *fltr);
int iavf_fdir_add_fltr(struct iavf_adapter *adapter,
		       struct iavf_fdir_fltr *fltr);
int iavf_fdir_del_fltr(struct iavf_adapter *adapter, bool is_raw, u32 data);
struct iavf_fdir_fltr *iavf_find_fdir_fltr(struct iavf_adapter *adapter,
					   bool is_raw, u32 data);
#endif /* _IAVF_FDIR_H_ */

Annotation

Implementation Notes