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OS-4647 lx fails to mount nfs share - Transport endpoint is already connected
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--- old/usr/src/uts/common/inet/udp_impl.h
+++ new/usr/src/uts/common/inet/udp_impl.h
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21 /*
22 22 * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
23 23 */
24 24
25 25 #ifndef _UDP_IMPL_H
26 26 #define _UDP_IMPL_H
27 27
28 28 /*
29 29 * UDP implementation private declarations. These interfaces are
30 30 * used to build the IP module and are not meant to be accessed
31 31 * by any modules except IP itself. They are undocumented and are
32 32 * subject to change without notice.
33 33 */
34 34
35 35 #ifdef __cplusplus
36 36 extern "C" {
37 37 #endif
38 38
39 39 #ifdef _KERNEL
40 40
41 41 #include <sys/int_types.h>
42 42 #include <sys/netstack.h>
43 43
44 44 #include <netinet/in.h>
45 45 #include <netinet/ip6.h>
46 46
47 47 #include <inet/common.h>
48 48 #include <inet/ip.h>
49 49 #include <inet/optcom.h>
50 50 #include <inet/tunables.h>
51 51
52 52 #define UDP_MOD_ID 5607
53 53
54 54 /*
55 55 * Bind hash list size and hash function. It has to be a power of 2 for
56 56 * hashing.
57 57 */
58 58 #define UDP_BIND_FANOUT_SIZE 512
59 59 #define UDP_BIND_HASH(lport, size) \
60 60 ((ntohs((uint16_t)lport)) & (size - 1))
61 61
62 62 /* UDP bind fanout hash structure. */
63 63 typedef struct udp_fanout_s {
64 64 struct udp_s *uf_udp;
65 65 kmutex_t uf_lock;
66 66 #if defined(_LP64) || defined(_I32LPx)
67 67 char uf_pad[48];
68 68 #else
69 69 char uf_pad[56];
70 70 #endif
71 71 } udp_fanout_t;
72 72
73 73 /* Kstats */
74 74 typedef struct udp_stat { /* Class "net" kstats */
75 75 kstat_named_t udp_sock_fallback;
76 76 kstat_named_t udp_out_opt;
77 77 kstat_named_t udp_out_err_notconn;
78 78 kstat_named_t udp_out_err_output;
79 79 kstat_named_t udp_out_err_tudr;
80 80 #ifdef DEBUG
81 81 kstat_named_t udp_data_conn;
82 82 kstat_named_t udp_data_notconn;
83 83 kstat_named_t udp_out_lastdst;
84 84 kstat_named_t udp_out_diffdst;
85 85 kstat_named_t udp_out_ipv6;
86 86 kstat_named_t udp_out_mapped;
87 87 kstat_named_t udp_out_ipv4;
88 88 #endif
89 89 } udp_stat_t;
90 90
91 91 /*
92 92 * This struct contains only the counter part of udp_stat_t. It is used
93 93 * in udp_stats_cpu_t instead of udp_stat_t to save memory space.
94 94 */
95 95 typedef struct {
96 96 uint64_t udp_sock_fallback;
97 97 uint64_t udp_out_opt;
98 98 uint64_t udp_out_err_notconn;
99 99 uint64_t udp_out_err_output;
100 100 uint64_t udp_out_err_tudr;
101 101 #ifdef DEBUG
102 102 uint64_t udp_data_conn;
103 103 uint64_t udp_data_notconn;
104 104 uint64_t udp_out_lastdst;
105 105 uint64_t udp_out_diffdst;
106 106 uint64_t udp_out_ipv6;
107 107 uint64_t udp_out_mapped;
108 108 uint64_t udp_out_ipv4;
109 109 #endif
110 110 } udp_stat_counter_t;
111 111
112 112 /* Per CPU stats: UDP MIB2 and UDP kstat. */
113 113 typedef struct {
114 114 mib2_udp_t udp_sc_mib;
115 115 udp_stat_counter_t udp_sc_stats;
116 116 } udp_stats_cpu_t;
117 117
118 118 #define UDP_NUM_EPRIV_PORTS 64
119 119
120 120 /* Default buffer size and flow control wake up threshold. */
121 121 #define UDP_RECV_HIWATER (56 * 1024)
122 122 #define UDP_RECV_LOWATER 128
123 123 #define UDP_XMIT_HIWATER (56 * 1024)
124 124 #define UDP_XMIT_LOWATER 1024
125 125
126 126 /*
127 127 * UDP stack instances
128 128 */
129 129 struct udp_stack {
130 130 netstack_t *us_netstack; /* Common netstack */
131 131
132 132 uint_t us_bind_fanout_size;
133 133 udp_fanout_t *us_bind_fanout;
134 134
135 135 int us_num_epriv_ports;
136 136 in_port_t us_epriv_ports[UDP_NUM_EPRIV_PORTS];
137 137 kmutex_t us_epriv_port_lock;
138 138
139 139 /* Hint not protected by any lock */
140 140 in_port_t us_next_port_to_try;
141 141
142 142 /* UDP tunables table */
143 143 struct mod_prop_info_s *us_propinfo_tbl;
144 144
145 145 kstat_t *us_mibkp; /* kstats exporting mib data */
146 146 kstat_t *us_kstat;
147 147
148 148 /*
149 149 * The smallest anonymous port in the priviledged port range which UDP
150 150 * looks for free port. Use in the option UDP_ANONPRIVBIND.
151 151 */
152 152 in_port_t us_min_anonpriv_port;
153 153
154 154 ldi_ident_t us_ldi_ident;
155 155
156 156 udp_stats_cpu_t **us_sc;
157 157 int us_sc_cnt;
158 158 };
159 159
160 160 typedef struct udp_stack udp_stack_t;
161 161
162 162 /* Internal udp control structure, one per open stream */
163 163 typedef struct udp_s {
164 164 /*
165 165 * The addresses and ports in the conn_t and udp_state are protected by
166 166 * conn_lock and the fanout lock i.e. uf_lock. Need both locks to change
167 167 * the fields, either lock is sufficient for reading the field.
168 168 * conn_lock also protects the content of udp_t.
169 169 */
170 170 uint32_t udp_state; /* TPI state */
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171 171
172 172 ip_pkt_t udp_recv_ipp; /* Used for IPv4 options received */
173 173
174 174 /* Written to only once at the time of opening the endpoint */
175 175 conn_t *udp_connp;
176 176
177 177 uint32_t
178 178 udp_issocket : 1, /* socket mode; sockfs is on top */
179 179 udp_nat_t_endpoint : 1, /* UDP_NAT_T_ENDPOINT option */
180 180 udp_rcvhdr : 1, /* UDP_RCVHDR option */
181 + udp_snd_to_conn: 1, /* UDP_SND_TO_CONNECTED option */
181 182
182 - udp_pad_to_bit_31 : 29;
183 + udp_pad_to_bit_31 : 28;
183 184
184 185 /* Following 2 fields protected by the uf_lock */
185 186 struct udp_s *udp_bind_hash; /* Bind hash chain */
186 187 struct udp_s **udp_ptpbhn; /* Pointer to previous bind hash next. */
187 188
188 189 kmutex_t udp_recv_lock; /* recv lock */
189 190 size_t udp_rcv_disply_hiwat; /* user's view of rcvbuf */
190 191 size_t udp_rcv_hiwat; /* receive high watermark */
191 192
192 193 /* Set at open time and never changed */
193 194 udp_stack_t *udp_us; /* Stack instance for zone */
194 195
195 196 int udp_delayed_error;
196 197 mblk_t *udp_fallback_queue_head;
197 198 mblk_t *udp_fallback_queue_tail;
198 199 struct sockaddr_storage udp_delayed_addr;
199 200 } udp_t;
200 201
201 202 /* UDP Protocol header aligned */
202 203 typedef struct udpahdr_s {
203 204 in_port_t uha_src_port; /* Source port */
204 205 in_port_t uha_dst_port; /* Destination port */
205 206 uint16_t uha_length; /* UDP length */
206 207 uint16_t uha_checksum; /* UDP checksum */
207 208 } udpha_t;
208 209
209 210 #define us_wroff_extra us_propinfo_tbl[0].prop_cur_uval
210 211 #define us_ipv4_ttl us_propinfo_tbl[1].prop_cur_uval
211 212 #define us_ipv6_hoplimit us_propinfo_tbl[2].prop_cur_uval
212 213 #define us_smallest_nonpriv_port us_propinfo_tbl[3].prop_cur_uval
213 214 #define us_do_checksum us_propinfo_tbl[4].prop_cur_bval
214 215 #define us_smallest_anon_port us_propinfo_tbl[5].prop_cur_uval
215 216 #define us_largest_anon_port us_propinfo_tbl[6].prop_cur_uval
216 217 #define us_xmit_hiwat us_propinfo_tbl[7].prop_cur_uval
217 218 #define us_xmit_lowat us_propinfo_tbl[8].prop_cur_uval
218 219 #define us_recv_hiwat us_propinfo_tbl[9].prop_cur_uval
219 220 #define us_max_buf us_propinfo_tbl[10].prop_cur_uval
220 221 #define us_pmtu_discovery us_propinfo_tbl[11].prop_cur_bval
221 222 #define us_sendto_ignerr us_propinfo_tbl[12].prop_cur_bval
222 223
223 224 #define UDPS_BUMP_MIB(us, x) \
224 225 BUMP_MIB(&(us)->us_sc[CPU->cpu_seqid]->udp_sc_mib, x)
225 226
226 227 #define UDP_STAT(us, x) ((us)->us_sc[CPU->cpu_seqid]->udp_sc_stats.x++)
227 228 #define UDP_STAT_UPDATE(us, x, n) \
228 229 ((us)->us->sc[CPU->cpu_seqid]->udp_sc_stats.x.value.ui64 += (n))
229 230 #ifdef DEBUG
230 231 #define UDP_DBGSTAT(us, x) UDP_STAT(us, x)
231 232 #else
232 233 #define UDP_DBGSTAT(us, x)
233 234 #endif /* DEBUG */
234 235
235 236 extern int udp_opt_default(queue_t *, t_scalar_t, t_scalar_t, uchar_t *);
236 237 extern int udp_tpi_opt_get(queue_t *, t_scalar_t, t_scalar_t, uchar_t *);
237 238 extern int udp_tpi_opt_set(queue_t *, uint_t, int, int, uint_t, uchar_t *,
238 239 uint_t *, uchar_t *, void *, cred_t *);
239 240 extern mblk_t *udp_snmp_get(queue_t *, mblk_t *, boolean_t);
240 241 extern int udp_snmp_set(queue_t *, t_scalar_t, t_scalar_t, uchar_t *, int);
241 242 extern void udp_ddi_g_init(void);
242 243 extern void udp_ddi_g_destroy(void);
243 244 extern void udp_output(conn_t *connp, mblk_t *mp, struct sockaddr *addr,
244 245 socklen_t addrlen);
245 246 extern void udp_wput(queue_t *, mblk_t *);
246 247
247 248 extern void *udp_kstat_init(netstackid_t stackid);
248 249 extern void udp_kstat_fini(netstackid_t stackid, kstat_t *ksp);
249 250 extern void *udp_kstat2_init(netstackid_t stackid);
250 251 extern void udp_kstat2_fini(netstackid_t, kstat_t *);
251 252
252 253 extern void udp_stack_cpu_add(udp_stack_t *, processorid_t);
253 254
254 255 /*
255 256 * Object to represent database of options to search passed to
256 257 * {sock,tpi}optcom_req() interface routine to take care of option
257 258 * management and associated methods.
258 259 */
259 260 extern optdb_obj_t udp_opt_obj;
260 261 extern uint_t udp_max_optsize;
261 262
262 263 extern sock_lower_handle_t udp_create(int, int, int, sock_downcalls_t **,
263 264 uint_t *, int *, int, cred_t *);
264 265 extern int udp_fallback(sock_lower_handle_t, queue_t *, boolean_t,
265 266 so_proto_quiesced_cb_t, sock_quiesce_arg_t *);
266 267
267 268 extern sock_downcalls_t sock_udp_downcalls;
268 269
269 270 #endif /* _KERNEL */
270 271
271 272 #ifdef __cplusplus
272 273 }
273 274 #endif
274 275
275 276 #endif /* _UDP_IMPL_H */
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