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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/include/linux/sunrpc/svc_xprt.h
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@@ -20,8 +20,9 @@
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 	struct svc_xprt	*(*xpo_accept)(struct svc_xprt *);
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 	int		(*xpo_has_wspace)(struct svc_xprt *);
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 	int		(*xpo_recvfrom)(struct svc_rqst *);
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-	void		(*xpo_prep_reply_hdr)(struct svc_rqst *);
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 	int		(*xpo_sendto)(struct svc_rqst *);
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+	int		(*xpo_read_payload)(struct svc_rqst *, unsigned int,
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+					    unsigned int);
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 	void		(*xpo_release_rqst)(struct svc_rqst *);
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 	void		(*xpo_detach)(struct svc_xprt *);
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 	void		(*xpo_free)(struct svc_xprt *);
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@@ -84,10 +85,10 @@
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 	struct sockaddr_storage	xpt_remote;	/* remote peer's address */
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 	size_t			xpt_remotelen;	/* length of address */
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 	char			xpt_remotebuf[INET6_ADDRSTRLEN + 10];
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-	struct rpc_wait_queue	xpt_bc_pending;	/* backchannel wait queue */
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 	struct list_head	xpt_users;	/* callbacks on free */
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 	struct net		*xpt_net;
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+	const struct cred	*xpt_cred;
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 	struct rpc_xprt		*xpt_bc_xprt;	/* NFSv4.1 backchannel */
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 	struct rpc_xprt_switch	*xpt_bc_xps;	/* NFSv4.1 backchannel */
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 };
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@@ -116,12 +117,19 @@
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 	return 0;
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 }
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+static inline bool svc_xprt_is_dead(const struct svc_xprt *xprt)
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+{
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+	return (test_bit(XPT_DEAD, &xprt->xpt_flags) != 0) ||
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+		(test_bit(XPT_CLOSE, &xprt->xpt_flags) != 0);
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+}
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+
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 int	svc_reg_xprt_class(struct svc_xprt_class *);
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 void	svc_unreg_xprt_class(struct svc_xprt_class *);
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 void	svc_xprt_init(struct net *, struct svc_xprt_class *, struct svc_xprt *,
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 		      struct svc_serv *);
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 int	svc_create_xprt(struct svc_serv *, const char *, struct net *,
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-			const int, const unsigned short, int);
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+			const int, const unsigned short, int,
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+			const struct cred *);
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 void	svc_xprt_do_enqueue(struct svc_xprt *xprt);
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 void	svc_xprt_enqueue(struct svc_xprt *xprt);
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 void	svc_xprt_put(struct svc_xprt *xprt);