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dbe6974a39
commit89f42494f9upstream. Avoid socket state races due to repeated calls to ->connect() using the same socket. If connect() returns 0 due to the connection having completed, but we are in fact in a closing state, then we may leave the XPRT_CONNECTING flag set on the transport. Reported-by: Enrico Scholz <enrico.scholz@sigma-chemnitz.de> Fixes:3be232f11a("SUNRPC: Prevent immediate close+reconnect") Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> [meenashanmugam: Backported to 5.10: Fixed merge conflict in xs_tcp_setup_socket] Signed-off-by: Meena Shanmugam <meenashanmugam@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
94 lines
1.8 KiB
C
94 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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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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int init_socket_xprt(void);
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void cleanup_socket_xprt(void);
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unsigned short get_srcport(struct rpc_xprt *);
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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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struct file * file;
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/*
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* State of TCP reply receive
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*/
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struct {
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struct {
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__be32 fraghdr,
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xid,
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calldir;
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} __attribute__((packed));
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u32 offset,
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len;
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unsigned long copied;
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} recv;
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/*
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* State of TCP transmit queue
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*/
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struct {
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u32 offset;
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} xmit;
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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 error_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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int xprt_err;
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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 RPC flags
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*/
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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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#define XPRT_SOCK_WAKE_ERROR (4)
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#define XPRT_SOCK_WAKE_WRITE (5)
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#define XPRT_SOCK_WAKE_PENDING (6)
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#define XPRT_SOCK_WAKE_DISCONNECT (7)
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#define XPRT_SOCK_CONNECT_SENT (8)
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#endif /* _LINUX_SUNRPC_XPRTSOCK_H */
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