mirror of https://gitee.com/openkylin/linux.git
84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
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/*
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* linux/net/sunrpc/svc_xprt.c
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*
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* Author: Tom Tucker <tom@opengridcomputing.com>
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*/
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#include <linux/sched.h>
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#include <linux/errno.h>
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#include <linux/fcntl.h>
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#include <linux/net.h>
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#include <linux/in.h>
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#include <linux/inet.h>
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#include <linux/udp.h>
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#include <linux/tcp.h>
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#include <linux/unistd.h>
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#include <linux/slab.h>
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#include <linux/netdevice.h>
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#include <linux/skbuff.h>
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#include <linux/file.h>
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#include <linux/freezer.h>
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#include <net/sock.h>
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#include <net/checksum.h>
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#include <net/ip.h>
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#include <net/ipv6.h>
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#include <net/tcp_states.h>
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#include <linux/uaccess.h>
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#include <asm/ioctls.h>
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#include <linux/sunrpc/types.h>
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#include <linux/sunrpc/clnt.h>
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#include <linux/sunrpc/xdr.h>
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#include <linux/sunrpc/svcsock.h>
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#include <linux/sunrpc/stats.h>
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#include <linux/sunrpc/svc_xprt.h>
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#define RPCDBG_FACILITY RPCDBG_SVCXPRT
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/* List of registered transport classes */
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static DEFINE_SPINLOCK(svc_xprt_class_lock);
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static LIST_HEAD(svc_xprt_class_list);
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int svc_reg_xprt_class(struct svc_xprt_class *xcl)
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{
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struct svc_xprt_class *cl;
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int res = -EEXIST;
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dprintk("svc: Adding svc transport class '%s'\n", xcl->xcl_name);
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INIT_LIST_HEAD(&xcl->xcl_list);
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spin_lock(&svc_xprt_class_lock);
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/* Make sure there isn't already a class with the same name */
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list_for_each_entry(cl, &svc_xprt_class_list, xcl_list) {
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if (strcmp(xcl->xcl_name, cl->xcl_name) == 0)
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goto out;
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}
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list_add_tail(&xcl->xcl_list, &svc_xprt_class_list);
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res = 0;
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out:
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spin_unlock(&svc_xprt_class_lock);
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return res;
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}
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EXPORT_SYMBOL_GPL(svc_reg_xprt_class);
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void svc_unreg_xprt_class(struct svc_xprt_class *xcl)
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{
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dprintk("svc: Removing svc transport class '%s'\n", xcl->xcl_name);
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spin_lock(&svc_xprt_class_lock);
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list_del_init(&xcl->xcl_list);
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spin_unlock(&svc_xprt_class_lock);
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}
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EXPORT_SYMBOL_GPL(svc_unreg_xprt_class);
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/*
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* Called by transport drivers to initialize the transport independent
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* portion of the transport instance.
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*/
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void svc_xprt_init(struct svc_xprt_class *xcl, struct svc_xprt *xprt)
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{
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memset(xprt, 0, sizeof(*xprt));
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xprt->xpt_class = xcl;
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xprt->xpt_ops = xcl->xcl_ops;
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}
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EXPORT_SYMBOL_GPL(svc_xprt_init);
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