blob: fe5270fae3367684c58515e13bf0432fb9530b99 [file] [log] [blame]
Tom Tucker1d8206b92007-12-30 21:07:15 -06001/*
2 * linux/net/sunrpc/svc_xprt.c
3 *
4 * Author: Tom Tucker <tom@opengridcomputing.com>
5 */
6
7#include <linux/sched.h>
8#include <linux/errno.h>
9#include <linux/fcntl.h>
10#include <linux/net.h>
11#include <linux/in.h>
12#include <linux/inet.h>
13#include <linux/udp.h>
14#include <linux/tcp.h>
15#include <linux/unistd.h>
16#include <linux/slab.h>
17#include <linux/netdevice.h>
18#include <linux/skbuff.h>
19#include <linux/file.h>
20#include <linux/freezer.h>
21#include <net/sock.h>
22#include <net/checksum.h>
23#include <net/ip.h>
24#include <net/ipv6.h>
25#include <net/tcp_states.h>
26#include <linux/uaccess.h>
27#include <asm/ioctls.h>
28
29#include <linux/sunrpc/types.h>
30#include <linux/sunrpc/clnt.h>
31#include <linux/sunrpc/xdr.h>
32#include <linux/sunrpc/svcsock.h>
33#include <linux/sunrpc/stats.h>
34#include <linux/sunrpc/svc_xprt.h>
35
36#define RPCDBG_FACILITY RPCDBG_SVCXPRT
37
38/* List of registered transport classes */
39static DEFINE_SPINLOCK(svc_xprt_class_lock);
40static LIST_HEAD(svc_xprt_class_list);
41
42int svc_reg_xprt_class(struct svc_xprt_class *xcl)
43{
44 struct svc_xprt_class *cl;
45 int res = -EEXIST;
46
47 dprintk("svc: Adding svc transport class '%s'\n", xcl->xcl_name);
48
49 INIT_LIST_HEAD(&xcl->xcl_list);
50 spin_lock(&svc_xprt_class_lock);
51 /* Make sure there isn't already a class with the same name */
52 list_for_each_entry(cl, &svc_xprt_class_list, xcl_list) {
53 if (strcmp(xcl->xcl_name, cl->xcl_name) == 0)
54 goto out;
55 }
56 list_add_tail(&xcl->xcl_list, &svc_xprt_class_list);
57 res = 0;
58out:
59 spin_unlock(&svc_xprt_class_lock);
60 return res;
61}
62EXPORT_SYMBOL_GPL(svc_reg_xprt_class);
63
64void svc_unreg_xprt_class(struct svc_xprt_class *xcl)
65{
66 dprintk("svc: Removing svc transport class '%s'\n", xcl->xcl_name);
67 spin_lock(&svc_xprt_class_lock);
68 list_del_init(&xcl->xcl_list);
69 spin_unlock(&svc_xprt_class_lock);
70}
71EXPORT_SYMBOL_GPL(svc_unreg_xprt_class);
72
73/*
74 * Called by transport drivers to initialize the transport independent
75 * portion of the transport instance.
76 */
77void svc_xprt_init(struct svc_xprt_class *xcl, struct svc_xprt *xprt)
78{
79 memset(xprt, 0, sizeof(*xprt));
80 xprt->xpt_class = xcl;
81 xprt->xpt_ops = xcl->xcl_ops;
82}
83EXPORT_SYMBOL_GPL(svc_xprt_init);