mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 01:15:15 +07:00
f9c41a62bb
When receiving data messages, the "BUG_ON(skb->len < skb->data_len)" in the skb_pull() function triggers a kernel panic. Replace the skb_pull logic by a per skb offset as advised by Eric Dumazet. Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
164 lines
4.1 KiB
C
164 lines
4.1 KiB
C
/*
|
|
* Copyright 2006 IBM Corporation
|
|
* IUCV protocol stack for Linux on zSeries
|
|
* Version 1.0
|
|
* Author(s): Jennifer Hunt <jenhunt@us.ibm.com>
|
|
*
|
|
*/
|
|
|
|
#ifndef __AFIUCV_H
|
|
#define __AFIUCV_H
|
|
|
|
#include <asm/types.h>
|
|
#include <asm/byteorder.h>
|
|
#include <linux/list.h>
|
|
#include <linux/poll.h>
|
|
#include <linux/socket.h>
|
|
#include <net/iucv/iucv.h>
|
|
|
|
#ifndef AF_IUCV
|
|
#define AF_IUCV 32
|
|
#define PF_IUCV AF_IUCV
|
|
#endif
|
|
|
|
/* Connection and socket states */
|
|
enum {
|
|
IUCV_CONNECTED = 1,
|
|
IUCV_OPEN,
|
|
IUCV_BOUND,
|
|
IUCV_LISTEN,
|
|
IUCV_DISCONN,
|
|
IUCV_CLOSING,
|
|
IUCV_CLOSED
|
|
};
|
|
|
|
#define IUCV_QUEUELEN_DEFAULT 65535
|
|
#define IUCV_HIPER_MSGLIM_DEFAULT 128
|
|
#define IUCV_CONN_TIMEOUT (HZ * 40)
|
|
#define IUCV_DISCONN_TIMEOUT (HZ * 2)
|
|
#define IUCV_CONN_IDLE_TIMEOUT (HZ * 60)
|
|
#define IUCV_BUFSIZE_DEFAULT 32768
|
|
|
|
/* IUCV socket address */
|
|
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;
|
|
|
|
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;
|
|
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 msg_sent;
|
|
atomic_t msg_recv;
|
|
atomic_t pendings;
|
|
int transport;
|
|
void (*sk_txnotify)(struct sk_buff *skb,
|
|
enum iucv_tx_notify n);
|
|
};
|
|
|
|
struct iucv_skb_cb {
|
|
u32 class; /* target class of message */
|
|
u32 tag; /* tag associated with message */
|
|
u32 offset; /* offset for skb receival */
|
|
};
|
|
|
|
#define IUCV_SKB_CB(__skb) ((struct iucv_skb_cb *)&((__skb)->cb[0]))
|
|
|
|
/* iucv socket options (SOL_IUCV) */
|
|
#define SO_IPRMDATA_MSG 0x0080 /* send/recv IPRM_DATA msgs */
|
|
#define SO_MSGLIMIT 0x1000 /* get/set IUCV MSGLIMIT */
|
|
#define SO_MSGSIZE 0x0800 /* get maximum msgsize */
|
|
|
|
/* iucv related control messages (scm) */
|
|
#define SCM_IUCV_TRGCLS 0x0001 /* target class control message */
|
|
|
|
struct iucv_sock_list {
|
|
struct hlist_head head;
|
|
rwlock_t lock;
|
|
atomic_t autobind_name;
|
|
};
|
|
|
|
unsigned int iucv_sock_poll(struct file *file, struct socket *sock,
|
|
poll_table *wait);
|
|
void iucv_sock_link(struct iucv_sock_list *l, struct sock *s);
|
|
void iucv_sock_unlink(struct iucv_sock_list *l, struct sock *s);
|
|
void iucv_accept_enqueue(struct sock *parent, struct sock *sk);
|
|
void iucv_accept_unlink(struct sock *sk);
|
|
struct sock *iucv_accept_dequeue(struct sock *parent, struct socket *newsock);
|
|
|
|
#endif /* __IUCV_H */
|