1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2010 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* This file contains Solaris Cluster related TCP hooks and functions. */
#include <inet/tcp.h>
#include <inet/tcp_impl.h>
#include <inet/tcp_cluster.h>
static int cl_tcp_walk_list_stack(int (*callback)(cl_tcp_info_t *, void *),
void *arg, tcp_stack_t *tcps);
/*
* Hook functions to enable cluster networking
* On non-clustered systems these vectors must always be NULL.
*/
void (*cl_inet_listen)(netstackid_t stack_id, uint8_t protocol,
sa_family_t addr_family, uint8_t *laddrp,
in_port_t lport, void *args) = NULL;
void (*cl_inet_unlisten)(netstackid_t stack_id, uint8_t protocol,
sa_family_t addr_family, uint8_t *laddrp,
in_port_t lport, void *args) = NULL;
int (*cl_inet_connect2)(netstackid_t stack_id, uint8_t protocol,
boolean_t is_outgoing,
sa_family_t addr_family,
uint8_t *laddrp, in_port_t lport,
uint8_t *faddrp, in_port_t fport,
void *args) = NULL;
void (*cl_inet_disconnect)(netstackid_t stack_id, uint8_t protocol,
sa_family_t addr_family, uint8_t *laddrp,
in_port_t lport, uint8_t *faddrp,
in_port_t fport, void *args) = NULL;
/*
* Exported routine for extracting active tcp connection status.
*
* This is used by the Solaris Cluster Networking software to
* gather a list of connections that need to be forwarded to
* specific nodes in the cluster when configuration changes occur.
*
* The callback is invoked for each tcp_t structure from all netstacks,
* if 'stack_id' is less than 0. Otherwise, only for tcp_t structures
* from the netstack with the specified stack_id. Returning
* non-zero from the callback routine terminates the search.
*/
int
cl_tcp_walk_list(netstackid_t stack_id,
int (*cl_callback)(cl_tcp_info_t *, void *), void *arg)
{
netstack_handle_t nh;
netstack_t *ns;
int ret = 0;
if (stack_id >= 0) {
if ((ns = netstack_find_by_stackid(stack_id)) == NULL)
return (EINVAL);
ret = cl_tcp_walk_list_stack(cl_callback, arg,
ns->netstack_tcp);
netstack_rele(ns);
return (ret);
}
netstack_next_init(&nh);
while ((ns = netstack_next(&nh)) != NULL) {
ret = cl_tcp_walk_list_stack(cl_callback, arg,
ns->netstack_tcp);
netstack_rele(ns);
}
netstack_next_fini(&nh);
return (ret);
}
static int
cl_tcp_walk_list_stack(int (*callback)(cl_tcp_info_t *, void *), void *arg,
tcp_stack_t *tcps)
{
tcp_t *tcp;
cl_tcp_info_t cl_tcpi;
connf_t *connfp;
conn_t *connp;
int i;
ip_stack_t *ipst = tcps->tcps_netstack->netstack_ip;
ASSERT(callback != NULL);
for (i = 0; i < CONN_G_HASH_SIZE; i++) {
connfp = &ipst->ips_ipcl_globalhash_fanout[i];
connp = NULL;
while ((connp =
ipcl_get_next_conn(connfp, connp, IPCL_TCPCONN)) != NULL) {
tcp = connp->conn_tcp;
cl_tcpi.cl_tcpi_version = CL_TCPI_V1;
cl_tcpi.cl_tcpi_ipversion = connp->conn_ipversion;
cl_tcpi.cl_tcpi_state = tcp->tcp_state;
cl_tcpi.cl_tcpi_lport = connp->conn_lport;
cl_tcpi.cl_tcpi_fport = connp->conn_fport;
cl_tcpi.cl_tcpi_laddr_v6 = connp->conn_laddr_v6;
cl_tcpi.cl_tcpi_faddr_v6 = connp->conn_faddr_v6;
/*
* If the callback returns non-zero
* we terminate the traversal.
*/
if ((*callback)(&cl_tcpi, arg) != 0) {
CONN_DEC_REF(tcp->tcp_connp);
return (1);
}
}
}
return (0);
}
|
