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7127 remove -Wno-missing-braces from Makefile.uts
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--- old/usr/src/uts/common/io/mac/plugins/mac_ipv4.c
+++ new/usr/src/uts/common/io/mac/plugins/mac_ipv4.c
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 2009 Sun Microsystems, Inc. All rights reserved.
23 23 * Use is subject to license terms.
24 24 */
25 25
26 26 /*
27 27 * DL_IPV4 MAC Type plugin for the Nemo mac module
28 28 */
29 29
30 30 #include <sys/types.h>
31 31 #include <sys/modctl.h>
32 32 #include <sys/dlpi.h>
33 33 #include <sys/mac.h>
34 34 #include <sys/mac_ipv4.h>
35 35 #include <sys/byteorder.h>
36 36 #include <sys/strsun.h>
37 37 #include <netinet/in.h>
38 38 #include <netinet/ip.h>
39 39 #include <inet/common.h>
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40 40 #include <inet/ip.h>
41 41 #include <inet/iptun.h>
42 42
43 43 static struct modlmisc mac_ipv4_modlmisc = {
44 44 &mod_miscops,
45 45 "IPv4 tunneling MAC plugin"
46 46 };
47 47
48 48 static struct modlinkage mac_ipv4_modlinkage = {
49 49 MODREV_1,
50 - &mac_ipv4_modlmisc,
51 - NULL
50 + { &mac_ipv4_modlmisc,
51 + NULL }
52 52 };
53 53
54 54 static mactype_ops_t mac_ipv4_type_ops;
55 55
56 56 int
57 57 _init(void)
58 58 {
59 59 mactype_register_t *mtrp;
60 60 int err;
61 61
62 62 if ((mtrp = mactype_alloc(MACTYPE_VERSION)) == NULL)
63 63 return (ENOTSUP);
64 64 mtrp->mtr_ident = MAC_PLUGIN_IDENT_IPV4;
65 65 mtrp->mtr_ops = &mac_ipv4_type_ops;
66 66 mtrp->mtr_mactype = DL_IPV4;
67 67 mtrp->mtr_nativetype = DL_IPV4;
68 68 mtrp->mtr_addrlen = sizeof (ipaddr_t);
69 69 if ((err = mactype_register(mtrp)) == 0) {
70 70 if ((err = mod_install(&mac_ipv4_modlinkage)) != 0)
71 71 (void) mactype_unregister(MAC_PLUGIN_IDENT_IPV4);
72 72 }
73 73 mactype_free(mtrp);
74 74 return (err);
75 75 }
76 76
77 77 int
78 78 _fini(void)
79 79 {
80 80 int err;
81 81 if ((err = mactype_unregister(MAC_PLUGIN_IDENT_IPV4)) != 0)
82 82 return (err);
83 83 return (mod_remove(&mac_ipv4_modlinkage));
84 84 }
85 85
86 86 int
87 87 _info(struct modinfo *modinfop)
88 88 {
89 89 return (mod_info(&mac_ipv4_modlinkage, modinfop));
90 90 }
91 91
92 92 /*
93 93 * MAC Type plugin operations
94 94 */
95 95
96 96 /* ARGSUSED */
97 97 int
98 98 mac_ipv4_unicst_verify(const void *addr, void *pdata)
99 99 {
100 100 const ipaddr_t *ipaddr = addr;
101 101 return ((CLASSD(*ipaddr) || (*ipaddr == INADDR_BROADCAST)) ?
102 102 EINVAL : 0);
103 103 }
104 104
105 105 /* ARGSUSED */
106 106 int
107 107 mac_ipv4_multicst_verify(const void *addr, void *pdata)
108 108 {
109 109 /*
110 110 * IPv4 configured tunnels do not have the concept of link-layer
111 111 * multicast.
112 112 */
113 113 return (ENOTSUP);
114 114 }
115 115
116 116 /*
117 117 * Check the legality of an IPv4 tunnel SAP value. The only two acceptable
118 118 * values are IPPROTO_ENCAP (IPv4 in IPv4) and IPPROTO_IPV6 (IPv6 in IPv4).
119 119 */
120 120 /* ARGSUSED */
121 121 boolean_t
122 122 mac_ipv4_sap_verify(uint32_t sap, uint32_t *bind_sap, void *pdata)
123 123 {
124 124 if (sap == IPPROTO_ENCAP || sap == IPPROTO_IPV6 || sap == 0) {
125 125 if (bind_sap != NULL)
126 126 *bind_sap = sap;
127 127 return (B_TRUE);
128 128 }
129 129 return (B_FALSE);
130 130 }
131 131
132 132 /*
133 133 * Build an IPv4 link-layer header for tunneling. If provided, the
134 134 * template header provided by the driver supplies the header length, type
135 135 * of service, don't fragment flag, ttl, and potential options (depending
136 136 * on the header length).
137 137 */
138 138 /* ARGSUSED */
139 139 mblk_t *
140 140 mac_ipv4_header(const void *saddr, const void *daddr, uint32_t sap, void *pdata,
141 141 mblk_t *payload, size_t extra_len)
142 142 {
143 143 struct ip *iphp;
144 144 struct ip *tmpl_iphp = pdata;
145 145 mblk_t *mp;
146 146 size_t hdr_len = sizeof (struct ip);
147 147
148 148 if (!mac_ipv4_sap_verify(sap, NULL, NULL))
149 149 return (NULL);
150 150
151 151 if (tmpl_iphp != NULL)
152 152 hdr_len = tmpl_iphp->ip_hl * sizeof (uint32_t);
153 153
154 154 if ((mp = allocb(hdr_len + extra_len, BPRI_HI)) == NULL)
155 155 return (NULL);
156 156
157 157 iphp = (struct ip *)mp->b_rptr;
158 158
159 159 bzero(iphp, hdr_len + extra_len);
160 160 if (tmpl_iphp != NULL) {
161 161 bcopy(tmpl_iphp, iphp, hdr_len);
162 162 } else {
163 163 iphp->ip_hl = IP_SIMPLE_HDR_LENGTH_IN_WORDS;
164 164 iphp->ip_off = htons(IP_DF);
165 165 iphp->ip_ttl = IPTUN_DEFAULT_HOPLIMIT;
166 166 }
167 167
168 168 iphp->ip_v = IPVERSION;
169 169 iphp->ip_len = 0;
170 170 iphp->ip_p = (uint8_t)sap;
171 171 bcopy(saddr, &(iphp->ip_src), sizeof (struct in_addr));
172 172 bcopy(daddr, &(iphp->ip_dst), sizeof (struct in_addr));
173 173
174 174 mp->b_wptr += hdr_len;
175 175 return (mp);
176 176 }
177 177
178 178 /* ARGSUSED */
179 179 int
180 180 mac_ipv4_header_info(mblk_t *mp, void *pdata, mac_header_info_t *hdr_info)
181 181 {
182 182 struct ip *iphp;
183 183
184 184 if (MBLKL(mp) < sizeof (struct ip))
185 185 return (EINVAL);
186 186
187 187 iphp = (struct ip *)mp->b_rptr;
188 188
189 189 /*
190 190 * IPv4 tunnels don't have a concept of link-layer multicast since
191 191 * they have fixed unicast endpoints.
192 192 */
193 193 if (mac_ipv4_unicst_verify(&iphp->ip_dst, NULL) != 0)
194 194 return (EINVAL);
195 195
196 196 hdr_info->mhi_hdrsize = iphp->ip_hl * sizeof (uint32_t);
197 197 hdr_info->mhi_pktsize = 0;
198 198 hdr_info->mhi_daddr = (const uint8_t *)&(iphp->ip_dst);
199 199 hdr_info->mhi_saddr = (const uint8_t *)&(iphp->ip_src);
200 200 hdr_info->mhi_origsap = hdr_info->mhi_bindsap = iphp->ip_p;
201 201 hdr_info->mhi_dsttype = MAC_ADDRTYPE_UNICAST;
202 202 return (0);
203 203 }
204 204
205 205 /*
206 206 * Plugin data is either NULL or a pointer to an IPv4 header.
207 207 */
208 208 boolean_t
209 209 mac_ipv4_pdata_verify(void *pdata, size_t pdata_size)
210 210 {
211 211 const struct ip *iphp = pdata;
212 212
213 213 if (pdata == NULL)
214 214 return (pdata_size == 0);
215 215 if (pdata_size < sizeof (struct ip))
216 216 return (B_FALSE);
217 217 /* Make sure that the header length field matches pdata_size */
218 218 return (pdata_size == iphp->ip_hl * sizeof (uint32_t));
219 219 }
220 220
221 221 static mactype_ops_t mac_ipv4_type_ops = {
222 222 MTOPS_PDATA_VERIFY,
223 223 mac_ipv4_unicst_verify,
224 224 mac_ipv4_multicst_verify,
225 225 mac_ipv4_sap_verify,
226 226 mac_ipv4_header,
227 227 mac_ipv4_header_info,
228 228 mac_ipv4_pdata_verify,
229 229 NULL,
230 230 NULL,
231 231 NULL
232 232 };
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