7196dbb02e
When the NFSv4 server tells us the lease period, we usually want to adjust down the timeout parameters on the TCP connection to ensure that we don't miss lease renewals due to a faulty connection. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
91 lines
1.7 KiB
C
91 lines
1.7 KiB
C
/*
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* linux/include/linux/sunrpc/xprtsock.h
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*
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* Declarations for the RPC transport socket provider.
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*/
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#ifndef _LINUX_SUNRPC_XPRTSOCK_H
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#define _LINUX_SUNRPC_XPRTSOCK_H
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#ifdef __KERNEL__
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int init_socket_xprt(void);
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void cleanup_socket_xprt(void);
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#define RPC_MIN_RESVPORT (1U)
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#define RPC_MAX_RESVPORT (65535U)
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#define RPC_DEF_MIN_RESVPORT (665U)
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#define RPC_DEF_MAX_RESVPORT (1023U)
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struct sock_xprt {
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struct rpc_xprt xprt;
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/*
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* Network layer
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*/
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struct socket * sock;
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struct sock * inet;
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/*
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* State of TCP reply receive
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*/
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__be32 tcp_fraghdr,
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tcp_xid,
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tcp_calldir;
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u32 tcp_offset,
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tcp_reclen;
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unsigned long tcp_copied,
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tcp_flags;
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/*
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* Connection of transports
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*/
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unsigned long sock_state;
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struct delayed_work connect_worker;
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struct work_struct recv_worker;
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struct mutex recv_mutex;
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struct sockaddr_storage srcaddr;
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unsigned short srcport;
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/*
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* UDP socket buffer size parameters
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*/
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size_t rcvsize,
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sndsize;
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struct rpc_timeout tcp_timeout;
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/*
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* Saved socket callback addresses
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*/
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void (*old_data_ready)(struct sock *);
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void (*old_state_change)(struct sock *);
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void (*old_write_space)(struct sock *);
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void (*old_error_report)(struct sock *);
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};
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/*
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* TCP receive state flags
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*/
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#define TCP_RCV_LAST_FRAG (1UL << 0)
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#define TCP_RCV_COPY_FRAGHDR (1UL << 1)
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#define TCP_RCV_COPY_XID (1UL << 2)
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#define TCP_RCV_COPY_DATA (1UL << 3)
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#define TCP_RCV_READ_CALLDIR (1UL << 4)
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#define TCP_RCV_COPY_CALLDIR (1UL << 5)
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/*
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* TCP RPC flags
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*/
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#define TCP_RPC_REPLY (1UL << 6)
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#define XPRT_SOCK_CONNECTING 1U
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#define XPRT_SOCK_DATA_READY (2)
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#define XPRT_SOCK_UPD_TIMEOUT (3)
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#endif /* __KERNEL__ */
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#endif /* _LINUX_SUNRPC_XPRTSOCK_H */
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