include/net/mana/mana.h

Source file repositories/reference/linux-study-clean/include/net/mana/mana.h

File Facts

System
Linux kernel
Corpus path
include/net/mana/mana.h
Extension
.h
Size
25777 bytes
Lines
1063
Domain
Networking Core
Bucket
Sockets, Protocols, Packet Path, And Network Policy
Inferred role
Networking Core: implementation source
Status
source implementation candidate

Why This File Exists

Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.

Dependency Surface

Detected Declarations

Annotated Snippet

struct mana_stats_rx {
	u64 packets;
	u64 bytes;
	u64 xdp_drop;
	u64 xdp_tx;
	u64 xdp_redirect;
	u64 pkt_len0_err;
	u64 coalesced_cqe[MANA_RXCOMP_OOB_NUM_PPI - 1];
	struct u64_stats_sync syncp;
};

struct mana_stats_tx {
	u64 packets;
	u64 bytes;
	u64 xdp_xmit;
	u64 tso_packets;
	u64 tso_bytes;
	u64 tso_inner_packets;
	u64 tso_inner_bytes;
	u64 short_pkt_fmt;
	u64 long_pkt_fmt;
	u64 csum_partial;
	u64 mana_map_err;
	struct u64_stats_sync syncp;
};

struct mana_txq {
	struct gdma_queue *gdma_sq;

	union {
		u32 gdma_txq_id;
		struct {
			u32 reserved1	: 10;
			u32 vsq_frame	: 14;
			u32 reserved2	: 8;
		};
	};

	u16 vp_offset;

	struct net_device *ndev;

	/* The SKBs are sent to the HW and we are waiting for the CQEs. */
	struct sk_buff_head pending_skbs;
	struct netdev_queue *net_txq;

	atomic_t pending_sends;

	bool napi_initialized;

	struct mana_stats_tx stats;
};

/* skb data and frags dma mappings */
struct mana_skb_head {
	/* GSO pkts may have 2 SGEs for the linear part*/
	dma_addr_t dma_handle[MAX_SKB_FRAGS + 2];

	u32 size[MAX_SKB_FRAGS + 2];
};

#define MANA_HEADROOM sizeof(struct mana_skb_head)

enum mana_tx_pkt_format {
	MANA_SHORT_PKT_FMT	= 0,
	MANA_LONG_PKT_FMT	= 1,
};

struct mana_tx_short_oob {
	u32 pkt_fmt		: 2;
	u32 is_outer_ipv4	: 1;
	u32 is_outer_ipv6	: 1;
	u32 comp_iphdr_csum	: 1;
	u32 comp_tcp_csum	: 1;
	u32 comp_udp_csum	: 1;
	u32 supress_txcqe_gen	: 1;
	u32 vcq_num		: 24;

	u32 trans_off		: 10; /* Transport header offset */
	u32 vsq_frame		: 14;
	u32 short_vp_offset	: 8;
}; /* HW DATA */

struct mana_tx_long_oob {
	u32 is_encap		: 1;
	u32 inner_is_ipv6	: 1;
	u32 inner_tcp_opt	: 1;
	u32 inject_vlan_pri_tag : 1;
	u32 reserved1		: 12;
	u32 pcp			: 3;  /* 802.1Q */

Annotation

Implementation Notes