include/net/iucv/af_iucv.h

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

File Facts

System
Linux kernel
Corpus path
include/net/iucv/af_iucv.h
Extension
.h
Size
3974 bytes
Lines
165
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 sockaddr_iucv {
	sa_family_t	siucv_family;
	unsigned short	siucv_port;		/* Reserved */
	unsigned int	siucv_addr;		/* Reserved */
	char		siucv_nodeid[8];	/* Reserved */
	char		siucv_user_id[8];	/* Guest User Id */
	char		siucv_name[8];		/* Application Name */
};


/* Common socket structures and functions */
struct sock_msg_q {
	struct iucv_path	*path;
	struct iucv_message	msg;
	struct list_head	list;
	spinlock_t		lock;
};

#define AF_IUCV_FLAG_ACK 0x1
#define AF_IUCV_FLAG_SYN 0x2
#define AF_IUCV_FLAG_FIN 0x4
#define AF_IUCV_FLAG_WIN 0x8
#define AF_IUCV_FLAG_SHT 0x10

struct af_iucv_trans_hdr {
	u16 magic;
	u8 version;
	u8 flags;
	u16 window;
	char destNodeID[8];
	char destUserID[8];
	char destAppName[16];
	char srcNodeID[8];
	char srcUserID[8];
	char srcAppName[16];             /* => 70 bytes */
	struct iucv_message iucv_hdr;    /* => 33 bytes */
	u8 pad;                          /* total 104 bytes */
} __packed;

static inline struct af_iucv_trans_hdr *iucv_trans_hdr(struct sk_buff *skb)
{
	return (struct af_iucv_trans_hdr *)skb_network_header(skb);
}

enum iucv_tx_notify {
	/* transmission of skb is completed and was successful */
	TX_NOTIFY_OK = 0,
	/* target is unreachable */
	TX_NOTIFY_UNREACHABLE = 1,
	/* transfer pending queue full */
	TX_NOTIFY_TPQFULL = 2,
	/* general error */
	TX_NOTIFY_GENERALERROR = 3,
	/* transmission of skb is pending - may interleave
	 * with TX_NOTIFY_DELAYED_* */
	TX_NOTIFY_PENDING = 4,
	/* transmission of skb was done successfully (delayed) */
	TX_NOTIFY_DELAYED_OK = 5,
	/* target unreachable (detected delayed) */
	TX_NOTIFY_DELAYED_UNREACHABLE = 6,
	/* general error (detected delayed) */
	TX_NOTIFY_DELAYED_GENERALERROR = 7,
};

#define iucv_sk(__sk) ((struct iucv_sock *) __sk)

#define AF_IUCV_TRANS_IUCV 0
#define AF_IUCV_TRANS_HIPER 1

struct iucv_sock {
	struct sock		sk;
	struct_group(init,
		char		src_user_id[8];
		char		src_name[8];
		char		dst_user_id[8];
		char		dst_name[8];
	);
	struct list_head	accept_q;
	spinlock_t		accept_q_lock;
	struct sock		*parent;
	struct iucv_path	*path;
	struct net_device	*hs_dev;
	struct sk_buff_head	send_skb_q;
	struct sk_buff_head	backlog_skb_q;
	struct sock_msg_q	message_q;
	unsigned int		send_tag;
	u8			flags;
	u16			msglimit;
	u16			msglimit_peer;
	atomic_t		skbs_in_xmit;

Annotation

Implementation Notes