1 // SPDX-License-Identifier: GPL-2.0-or-later <<
2 /* 1 /*
3 * Copyright Gavin Shan, IBM Corporation 2016. 2 * Copyright Gavin Shan, IBM Corporation 2016.
>> 3 *
>> 4 * This program is free software; you can redistribute it and/or modify
>> 5 * it under the terms of the GNU General Public License as published by
>> 6 * the Free Software Foundation; either version 2 of the License, or
>> 7 * (at your option) any later version.
4 */ 8 */
5 9
6 #include <linux/module.h> 10 #include <linux/module.h>
7 #include <linux/kernel.h> 11 #include <linux/kernel.h>
8 #include <linux/init.h> 12 #include <linux/init.h>
9 #include <linux/etherdevice.h> 13 #include <linux/etherdevice.h>
10 #include <linux/netdevice.h> 14 #include <linux/netdevice.h>
11 #include <linux/skbuff.h> 15 #include <linux/skbuff.h>
12 16
13 #include <net/ncsi.h> 17 #include <net/ncsi.h>
14 #include <net/net_namespace.h> 18 #include <net/net_namespace.h>
15 #include <net/sock.h> 19 #include <net/sock.h>
16 #include <net/genetlink.h> <<
17 20
18 #include "internal.h" 21 #include "internal.h"
19 #include "ncsi-pkt.h" 22 #include "ncsi-pkt.h"
20 23
21 static const int padding_bytes = 26; <<
22 <<
23 u32 ncsi_calculate_checksum(unsigned char *dat 24 u32 ncsi_calculate_checksum(unsigned char *data, int len)
24 { 25 {
25 u32 checksum = 0; 26 u32 checksum = 0;
26 int i; 27 int i;
27 28
28 for (i = 0; i < len; i += 2) 29 for (i = 0; i < len; i += 2)
29 checksum += (((u32)data[i] << 30 checksum += (((u32)data[i] << 8) | data[i + 1]);
30 31
31 checksum = (~checksum + 1); 32 checksum = (~checksum + 1);
32 return checksum; 33 return checksum;
33 } 34 }
34 35
35 /* This function should be called after the da 36 /* This function should be called after the data area has been
36 * populated completely. 37 * populated completely.
37 */ 38 */
38 static void ncsi_cmd_build_header(struct ncsi_ 39 static void ncsi_cmd_build_header(struct ncsi_pkt_hdr *h,
39 struct ncsi_ 40 struct ncsi_cmd_arg *nca)
40 { 41 {
41 u32 checksum; 42 u32 checksum;
42 __be32 *pchecksum; 43 __be32 *pchecksum;
43 44
44 h->mc_id = 0; 45 h->mc_id = 0;
45 h->revision = NCSI_PKT_REVISION; 46 h->revision = NCSI_PKT_REVISION;
46 h->reserved = 0; 47 h->reserved = 0;
47 h->id = nca->id; 48 h->id = nca->id;
48 h->type = nca->type; 49 h->type = nca->type;
49 h->channel = NCSI_TO_CHANNEL(nca- 50 h->channel = NCSI_TO_CHANNEL(nca->package,
50 nca- 51 nca->channel);
51 h->length = htons(nca->payload); 52 h->length = htons(nca->payload);
52 h->reserved1[0] = 0; 53 h->reserved1[0] = 0;
53 h->reserved1[1] = 0; 54 h->reserved1[1] = 0;
54 55
55 /* Fill with calculated checksum */ 56 /* Fill with calculated checksum */
56 checksum = ncsi_calculate_checksum((un 57 checksum = ncsi_calculate_checksum((unsigned char *)h,
57 siz 58 sizeof(*h) + nca->payload);
58 pchecksum = (__be32 *)((void *)h + siz 59 pchecksum = (__be32 *)((void *)h + sizeof(struct ncsi_pkt_hdr) +
59 ALIGN(nca->payload, 4)); !! 60 nca->payload);
60 *pchecksum = htonl(checksum); 61 *pchecksum = htonl(checksum);
61 } 62 }
62 63
63 static int ncsi_cmd_handler_default(struct sk_ 64 static int ncsi_cmd_handler_default(struct sk_buff *skb,
64 struct ncs 65 struct ncsi_cmd_arg *nca)
65 { 66 {
66 struct ncsi_cmd_pkt *cmd; 67 struct ncsi_cmd_pkt *cmd;
67 68
68 cmd = skb_put_zero(skb, sizeof(*cmd)); !! 69 cmd = (struct ncsi_cmd_pkt *)skb_put(skb, sizeof(*cmd));
>> 70 memset(cmd, 0, sizeof(*cmd));
69 ncsi_cmd_build_header(&cmd->cmd.common 71 ncsi_cmd_build_header(&cmd->cmd.common, nca);
70 72
71 return 0; 73 return 0;
72 } 74 }
73 75
74 static int ncsi_cmd_handler_sp(struct sk_buff 76 static int ncsi_cmd_handler_sp(struct sk_buff *skb,
75 struct ncsi_cmd 77 struct ncsi_cmd_arg *nca)
76 { 78 {
77 struct ncsi_cmd_sp_pkt *cmd; 79 struct ncsi_cmd_sp_pkt *cmd;
78 80
79 cmd = skb_put_zero(skb, sizeof(*cmd)); !! 81 cmd = (struct ncsi_cmd_sp_pkt *)skb_put(skb, sizeof(*cmd));
>> 82 memset(cmd, 0, sizeof(*cmd));
80 cmd->hw_arbitration = nca->bytes[0]; 83 cmd->hw_arbitration = nca->bytes[0];
81 ncsi_cmd_build_header(&cmd->cmd.common 84 ncsi_cmd_build_header(&cmd->cmd.common, nca);
82 85
83 return 0; 86 return 0;
84 } 87 }
85 88
86 static int ncsi_cmd_handler_dc(struct sk_buff 89 static int ncsi_cmd_handler_dc(struct sk_buff *skb,
87 struct ncsi_cmd 90 struct ncsi_cmd_arg *nca)
88 { 91 {
89 struct ncsi_cmd_dc_pkt *cmd; 92 struct ncsi_cmd_dc_pkt *cmd;
90 93
91 cmd = skb_put_zero(skb, sizeof(*cmd)); !! 94 cmd = (struct ncsi_cmd_dc_pkt *)skb_put(skb, sizeof(*cmd));
>> 95 memset(cmd, 0, sizeof(*cmd));
92 cmd->ald = nca->bytes[0]; 96 cmd->ald = nca->bytes[0];
93 ncsi_cmd_build_header(&cmd->cmd.common 97 ncsi_cmd_build_header(&cmd->cmd.common, nca);
94 98
95 return 0; 99 return 0;
96 } 100 }
97 101
98 static int ncsi_cmd_handler_rc(struct sk_buff 102 static int ncsi_cmd_handler_rc(struct sk_buff *skb,
99 struct ncsi_cmd 103 struct ncsi_cmd_arg *nca)
100 { 104 {
101 struct ncsi_cmd_rc_pkt *cmd; 105 struct ncsi_cmd_rc_pkt *cmd;
102 106
103 cmd = skb_put_zero(skb, sizeof(*cmd)); !! 107 cmd = (struct ncsi_cmd_rc_pkt *)skb_put(skb, sizeof(*cmd));
>> 108 memset(cmd, 0, sizeof(*cmd));
104 ncsi_cmd_build_header(&cmd->cmd.common 109 ncsi_cmd_build_header(&cmd->cmd.common, nca);
105 110
106 return 0; 111 return 0;
107 } 112 }
108 113
109 static int ncsi_cmd_handler_ae(struct sk_buff 114 static int ncsi_cmd_handler_ae(struct sk_buff *skb,
110 struct ncsi_cmd 115 struct ncsi_cmd_arg *nca)
111 { 116 {
112 struct ncsi_cmd_ae_pkt *cmd; 117 struct ncsi_cmd_ae_pkt *cmd;
113 118
114 cmd = skb_put_zero(skb, sizeof(*cmd)); !! 119 cmd = (struct ncsi_cmd_ae_pkt *)skb_put(skb, sizeof(*cmd));
>> 120 memset(cmd, 0, sizeof(*cmd));
115 cmd->mc_id = nca->bytes[0]; 121 cmd->mc_id = nca->bytes[0];
116 cmd->mode = htonl(nca->dwords[1]); 122 cmd->mode = htonl(nca->dwords[1]);
117 ncsi_cmd_build_header(&cmd->cmd.common 123 ncsi_cmd_build_header(&cmd->cmd.common, nca);
118 124
119 return 0; 125 return 0;
120 } 126 }
121 127
122 static int ncsi_cmd_handler_sl(struct sk_buff 128 static int ncsi_cmd_handler_sl(struct sk_buff *skb,
123 struct ncsi_cmd 129 struct ncsi_cmd_arg *nca)
124 { 130 {
125 struct ncsi_cmd_sl_pkt *cmd; 131 struct ncsi_cmd_sl_pkt *cmd;
126 132
127 cmd = skb_put_zero(skb, sizeof(*cmd)); !! 133 cmd = (struct ncsi_cmd_sl_pkt *)skb_put(skb, sizeof(*cmd));
>> 134 memset(cmd, 0, sizeof(*cmd));
128 cmd->mode = htonl(nca->dwords[0]); 135 cmd->mode = htonl(nca->dwords[0]);
129 cmd->oem_mode = htonl(nca->dwords[1]); 136 cmd->oem_mode = htonl(nca->dwords[1]);
130 ncsi_cmd_build_header(&cmd->cmd.common 137 ncsi_cmd_build_header(&cmd->cmd.common, nca);
131 138
132 return 0; 139 return 0;
133 } 140 }
134 141
135 static int ncsi_cmd_handler_svf(struct sk_buff 142 static int ncsi_cmd_handler_svf(struct sk_buff *skb,
136 struct ncsi_cm 143 struct ncsi_cmd_arg *nca)
137 { 144 {
138 struct ncsi_cmd_svf_pkt *cmd; 145 struct ncsi_cmd_svf_pkt *cmd;
139 146
140 cmd = skb_put_zero(skb, sizeof(*cmd)); !! 147 cmd = (struct ncsi_cmd_svf_pkt *)skb_put(skb, sizeof(*cmd));
141 cmd->vlan = htons(nca->words[1]); !! 148 memset(cmd, 0, sizeof(*cmd));
142 cmd->index = nca->bytes[6]; !! 149 cmd->vlan = htons(nca->words[0]);
143 cmd->enable = nca->bytes[7]; !! 150 cmd->index = nca->bytes[2];
>> 151 cmd->enable = nca->bytes[3];
144 ncsi_cmd_build_header(&cmd->cmd.common 152 ncsi_cmd_build_header(&cmd->cmd.common, nca);
145 153
146 return 0; 154 return 0;
147 } 155 }
148 156
149 static int ncsi_cmd_handler_ev(struct sk_buff 157 static int ncsi_cmd_handler_ev(struct sk_buff *skb,
150 struct ncsi_cmd 158 struct ncsi_cmd_arg *nca)
151 { 159 {
152 struct ncsi_cmd_ev_pkt *cmd; 160 struct ncsi_cmd_ev_pkt *cmd;
153 161
154 cmd = skb_put_zero(skb, sizeof(*cmd)); !! 162 cmd = (struct ncsi_cmd_ev_pkt *)skb_put(skb, sizeof(*cmd));
155 cmd->mode = nca->bytes[3]; !! 163 memset(cmd, 0, sizeof(*cmd));
>> 164 cmd->mode = nca->bytes[0];
156 ncsi_cmd_build_header(&cmd->cmd.common 165 ncsi_cmd_build_header(&cmd->cmd.common, nca);
157 166
158 return 0; 167 return 0;
159 } 168 }
160 169
161 static int ncsi_cmd_handler_sma(struct sk_buff 170 static int ncsi_cmd_handler_sma(struct sk_buff *skb,
162 struct ncsi_cm 171 struct ncsi_cmd_arg *nca)
163 { 172 {
164 struct ncsi_cmd_sma_pkt *cmd; 173 struct ncsi_cmd_sma_pkt *cmd;
165 int i; 174 int i;
166 175
167 cmd = skb_put_zero(skb, sizeof(*cmd)); !! 176 cmd = (struct ncsi_cmd_sma_pkt *)skb_put(skb, sizeof(*cmd));
>> 177 memset(cmd, 0, sizeof(*cmd));
168 for (i = 0; i < 6; i++) 178 for (i = 0; i < 6; i++)
169 cmd->mac[i] = nca->bytes[i]; 179 cmd->mac[i] = nca->bytes[i];
170 cmd->index = nca->bytes[6]; 180 cmd->index = nca->bytes[6];
171 cmd->at_e = nca->bytes[7]; 181 cmd->at_e = nca->bytes[7];
172 ncsi_cmd_build_header(&cmd->cmd.common 182 ncsi_cmd_build_header(&cmd->cmd.common, nca);
173 183
174 return 0; 184 return 0;
175 } 185 }
176 186
177 static int ncsi_cmd_handler_ebf(struct sk_buff 187 static int ncsi_cmd_handler_ebf(struct sk_buff *skb,
178 struct ncsi_cm 188 struct ncsi_cmd_arg *nca)
179 { 189 {
180 struct ncsi_cmd_ebf_pkt *cmd; 190 struct ncsi_cmd_ebf_pkt *cmd;
181 191
182 cmd = skb_put_zero(skb, sizeof(*cmd)); !! 192 cmd = (struct ncsi_cmd_ebf_pkt *)skb_put(skb, sizeof(*cmd));
>> 193 memset(cmd, 0, sizeof(*cmd));
183 cmd->mode = htonl(nca->dwords[0]); 194 cmd->mode = htonl(nca->dwords[0]);
184 ncsi_cmd_build_header(&cmd->cmd.common 195 ncsi_cmd_build_header(&cmd->cmd.common, nca);
185 196
186 return 0; 197 return 0;
187 } 198 }
188 199
189 static int ncsi_cmd_handler_egmf(struct sk_buf 200 static int ncsi_cmd_handler_egmf(struct sk_buff *skb,
190 struct ncsi_c 201 struct ncsi_cmd_arg *nca)
191 { 202 {
192 struct ncsi_cmd_egmf_pkt *cmd; 203 struct ncsi_cmd_egmf_pkt *cmd;
193 204
194 cmd = skb_put_zero(skb, sizeof(*cmd)); !! 205 cmd = (struct ncsi_cmd_egmf_pkt *)skb_put(skb, sizeof(*cmd));
>> 206 memset(cmd, 0, sizeof(*cmd));
195 cmd->mode = htonl(nca->dwords[0]); 207 cmd->mode = htonl(nca->dwords[0]);
196 ncsi_cmd_build_header(&cmd->cmd.common 208 ncsi_cmd_build_header(&cmd->cmd.common, nca);
197 209
198 return 0; 210 return 0;
199 } 211 }
200 212
201 static int ncsi_cmd_handler_snfc(struct sk_buf 213 static int ncsi_cmd_handler_snfc(struct sk_buff *skb,
202 struct ncsi_c 214 struct ncsi_cmd_arg *nca)
203 { 215 {
204 struct ncsi_cmd_snfc_pkt *cmd; 216 struct ncsi_cmd_snfc_pkt *cmd;
205 217
206 cmd = skb_put_zero(skb, sizeof(*cmd)); !! 218 cmd = (struct ncsi_cmd_snfc_pkt *)skb_put(skb, sizeof(*cmd));
>> 219 memset(cmd, 0, sizeof(*cmd));
207 cmd->mode = nca->bytes[0]; 220 cmd->mode = nca->bytes[0];
208 ncsi_cmd_build_header(&cmd->cmd.common 221 ncsi_cmd_build_header(&cmd->cmd.common, nca);
209 222
210 return 0; 223 return 0;
211 } 224 }
212 225
213 static int ncsi_cmd_handler_oem(struct sk_buff <<
214 struct ncsi_cm <<
215 { <<
216 struct ncsi_cmd_oem_pkt *cmd; <<
217 unsigned int len; <<
218 int payload; <<
219 /* NC-SI spec DSP_0222_1.2.0, section <<
220 * requires payload to be padded with <<
221 * 32-bit boundary before the checksum <<
222 * Ensure the padding bytes are accoun <<
223 * skb allocation <<
224 */ <<
225 <<
226 payload = ALIGN(nca->payload, 4); <<
227 len = sizeof(struct ncsi_cmd_pkt_hdr) <<
228 len += max(payload, padding_bytes); <<
229 <<
230 cmd = skb_put_zero(skb, len); <<
231 unsafe_memcpy(&cmd->mfr_id, nca->data, <<
232 /* skb allocated with en <<
233 ncsi_cmd_build_header(&cmd->cmd.common <<
234 <<
235 return 0; <<
236 } <<
237 <<
238 static struct ncsi_cmd_handler { 226 static struct ncsi_cmd_handler {
239 unsigned char type; 227 unsigned char type;
240 int payload; 228 int payload;
241 int (*handler)(struct sk_buf 229 int (*handler)(struct sk_buff *skb,
242 struct ncsi_c 230 struct ncsi_cmd_arg *nca);
243 } ncsi_cmd_handlers[] = { 231 } ncsi_cmd_handlers[] = {
244 { NCSI_PKT_CMD_CIS, 0, ncsi_cmd_han 232 { NCSI_PKT_CMD_CIS, 0, ncsi_cmd_handler_default },
245 { NCSI_PKT_CMD_SP, 4, ncsi_cmd_han 233 { NCSI_PKT_CMD_SP, 4, ncsi_cmd_handler_sp },
246 { NCSI_PKT_CMD_DP, 0, ncsi_cmd_han 234 { NCSI_PKT_CMD_DP, 0, ncsi_cmd_handler_default },
247 { NCSI_PKT_CMD_EC, 0, ncsi_cmd_han 235 { NCSI_PKT_CMD_EC, 0, ncsi_cmd_handler_default },
248 { NCSI_PKT_CMD_DC, 4, ncsi_cmd_han 236 { NCSI_PKT_CMD_DC, 4, ncsi_cmd_handler_dc },
249 { NCSI_PKT_CMD_RC, 4, ncsi_cmd_han 237 { NCSI_PKT_CMD_RC, 4, ncsi_cmd_handler_rc },
250 { NCSI_PKT_CMD_ECNT, 0, ncsi_cmd_han 238 { NCSI_PKT_CMD_ECNT, 0, ncsi_cmd_handler_default },
251 { NCSI_PKT_CMD_DCNT, 0, ncsi_cmd_han 239 { NCSI_PKT_CMD_DCNT, 0, ncsi_cmd_handler_default },
252 { NCSI_PKT_CMD_AE, 8, ncsi_cmd_han 240 { NCSI_PKT_CMD_AE, 8, ncsi_cmd_handler_ae },
253 { NCSI_PKT_CMD_SL, 8, ncsi_cmd_han 241 { NCSI_PKT_CMD_SL, 8, ncsi_cmd_handler_sl },
254 { NCSI_PKT_CMD_GLS, 0, ncsi_cmd_han 242 { NCSI_PKT_CMD_GLS, 0, ncsi_cmd_handler_default },
255 { NCSI_PKT_CMD_SVF, 8, ncsi_cmd_han !! 243 { NCSI_PKT_CMD_SVF, 4, ncsi_cmd_handler_svf },
256 { NCSI_PKT_CMD_EV, 4, ncsi_cmd_han 244 { NCSI_PKT_CMD_EV, 4, ncsi_cmd_handler_ev },
257 { NCSI_PKT_CMD_DV, 0, ncsi_cmd_han 245 { NCSI_PKT_CMD_DV, 0, ncsi_cmd_handler_default },
258 { NCSI_PKT_CMD_SMA, 8, ncsi_cmd_han 246 { NCSI_PKT_CMD_SMA, 8, ncsi_cmd_handler_sma },
259 { NCSI_PKT_CMD_EBF, 4, ncsi_cmd_han 247 { NCSI_PKT_CMD_EBF, 4, ncsi_cmd_handler_ebf },
260 { NCSI_PKT_CMD_DBF, 0, ncsi_cmd_han 248 { NCSI_PKT_CMD_DBF, 0, ncsi_cmd_handler_default },
261 { NCSI_PKT_CMD_EGMF, 4, ncsi_cmd_han 249 { NCSI_PKT_CMD_EGMF, 4, ncsi_cmd_handler_egmf },
262 { NCSI_PKT_CMD_DGMF, 0, ncsi_cmd_han 250 { NCSI_PKT_CMD_DGMF, 0, ncsi_cmd_handler_default },
263 { NCSI_PKT_CMD_SNFC, 4, ncsi_cmd_han 251 { NCSI_PKT_CMD_SNFC, 4, ncsi_cmd_handler_snfc },
264 { NCSI_PKT_CMD_GVI, 0, ncsi_cmd_han 252 { NCSI_PKT_CMD_GVI, 0, ncsi_cmd_handler_default },
265 { NCSI_PKT_CMD_GC, 0, ncsi_cmd_han 253 { NCSI_PKT_CMD_GC, 0, ncsi_cmd_handler_default },
266 { NCSI_PKT_CMD_GP, 0, ncsi_cmd_han 254 { NCSI_PKT_CMD_GP, 0, ncsi_cmd_handler_default },
267 { NCSI_PKT_CMD_GCPS, 0, ncsi_cmd_han 255 { NCSI_PKT_CMD_GCPS, 0, ncsi_cmd_handler_default },
268 { NCSI_PKT_CMD_GNS, 0, ncsi_cmd_han 256 { NCSI_PKT_CMD_GNS, 0, ncsi_cmd_handler_default },
269 { NCSI_PKT_CMD_GNPTS, 0, ncsi_cmd_han 257 { NCSI_PKT_CMD_GNPTS, 0, ncsi_cmd_handler_default },
270 { NCSI_PKT_CMD_GPS, 0, ncsi_cmd_han 258 { NCSI_PKT_CMD_GPS, 0, ncsi_cmd_handler_default },
271 { NCSI_PKT_CMD_OEM, -1, ncsi_cmd_han !! 259 { NCSI_PKT_CMD_OEM, 0, NULL },
272 { NCSI_PKT_CMD_PLDM, 0, NULL 260 { NCSI_PKT_CMD_PLDM, 0, NULL },
273 { NCSI_PKT_CMD_GPUUID, 0, ncsi_cmd_han !! 261 { NCSI_PKT_CMD_GPUUID, 0, ncsi_cmd_handler_default }
274 { NCSI_PKT_CMD_GMCMA, 0, ncsi_cmd_han <<
275 }; 262 };
276 263
277 static struct ncsi_request *ncsi_alloc_command 264 static struct ncsi_request *ncsi_alloc_command(struct ncsi_cmd_arg *nca)
278 { 265 {
279 struct ncsi_dev_priv *ndp = nca->ndp; 266 struct ncsi_dev_priv *ndp = nca->ndp;
280 struct ncsi_dev *nd = &ndp->ndev; 267 struct ncsi_dev *nd = &ndp->ndev;
281 struct net_device *dev = nd->dev; 268 struct net_device *dev = nd->dev;
282 int hlen = LL_RESERVED_SPACE(dev); 269 int hlen = LL_RESERVED_SPACE(dev);
283 int tlen = dev->needed_tailroom; 270 int tlen = dev->needed_tailroom;
284 int payload; <<
285 int len = hlen + tlen; 271 int len = hlen + tlen;
286 struct sk_buff *skb; 272 struct sk_buff *skb;
287 struct ncsi_request *nr; 273 struct ncsi_request *nr;
288 274
289 nr = ncsi_alloc_request(ndp, nca->req_ 275 nr = ncsi_alloc_request(ndp, nca->req_flags);
290 if (!nr) 276 if (!nr)
291 return NULL; 277 return NULL;
292 278
293 /* NCSI command packet has 16-bytes he 279 /* NCSI command packet has 16-bytes header, payload, 4 bytes checksum.
294 * Payload needs padding so that the c <<
295 * aligned to 32-bit boundary. <<
296 * The packet needs padding if its pay 280 * The packet needs padding if its payload is less than 26 bytes to
297 * meet 64 bytes minimal ethernet fram 281 * meet 64 bytes minimal ethernet frame length.
298 */ 282 */
299 len += sizeof(struct ncsi_cmd_pkt_hdr) 283 len += sizeof(struct ncsi_cmd_pkt_hdr) + 4;
300 payload = ALIGN(nca->payload, 4); !! 284 if (nca->payload < 26)
301 len += max(payload, padding_bytes); !! 285 len += 26;
>> 286 else
>> 287 len += nca->payload;
302 288
303 /* Allocate skb */ 289 /* Allocate skb */
304 skb = alloc_skb(len, GFP_ATOMIC); 290 skb = alloc_skb(len, GFP_ATOMIC);
305 if (!skb) { 291 if (!skb) {
306 ncsi_free_request(nr); 292 ncsi_free_request(nr);
307 return NULL; 293 return NULL;
308 } 294 }
309 295
310 nr->cmd = skb; 296 nr->cmd = skb;
311 skb_reserve(skb, hlen); 297 skb_reserve(skb, hlen);
312 skb_reset_network_header(skb); 298 skb_reset_network_header(skb);
313 299
314 skb->dev = dev; 300 skb->dev = dev;
315 skb->protocol = htons(ETH_P_NCSI); 301 skb->protocol = htons(ETH_P_NCSI);
316 302
317 return nr; 303 return nr;
318 } 304 }
319 305
320 int ncsi_xmit_cmd(struct ncsi_cmd_arg *nca) 306 int ncsi_xmit_cmd(struct ncsi_cmd_arg *nca)
321 { 307 {
322 struct ncsi_cmd_handler *nch = NULL; <<
323 struct ncsi_request *nr; 308 struct ncsi_request *nr;
324 unsigned char type; <<
325 struct ethhdr *eh; 309 struct ethhdr *eh;
>> 310 struct ncsi_cmd_handler *nch = NULL;
326 int i, ret; 311 int i, ret;
327 312
328 /* Use OEM generic handler for Netlink <<
329 if (nca->req_flags == NCSI_REQ_FLAG_NE <<
330 type = NCSI_PKT_CMD_OEM; <<
331 else <<
332 type = nca->type; <<
333 <<
334 /* Search for the handler */ 313 /* Search for the handler */
335 for (i = 0; i < ARRAY_SIZE(ncsi_cmd_ha 314 for (i = 0; i < ARRAY_SIZE(ncsi_cmd_handlers); i++) {
336 if (ncsi_cmd_handlers[i].type !! 315 if (ncsi_cmd_handlers[i].type == nca->type) {
337 if (ncsi_cmd_handlers[ 316 if (ncsi_cmd_handlers[i].handler)
338 nch = &ncsi_cm 317 nch = &ncsi_cmd_handlers[i];
339 else 318 else
340 nch = NULL; 319 nch = NULL;
341 320
342 break; 321 break;
343 } 322 }
344 } 323 }
345 324
346 if (!nch) { 325 if (!nch) {
347 netdev_err(nca->ndp->ndev.dev, 326 netdev_err(nca->ndp->ndev.dev,
348 "Cannot send packet 327 "Cannot send packet with type 0x%02x\n", nca->type);
349 return -ENOENT; 328 return -ENOENT;
350 } 329 }
351 330
352 /* Get packet payload length and alloc !! 331 /* Get packet payload length and allocate the request */
353 * It is expected that if length set a !! 332 nca->payload = nch->payload;
354 * handler structure means caller is i <<
355 * and setting length in nca before ca <<
356 */ <<
357 if (nch->payload >= 0) <<
358 nca->payload = nch->payload; <<
359 nr = ncsi_alloc_command(nca); 333 nr = ncsi_alloc_command(nca);
360 if (!nr) 334 if (!nr)
361 return -ENOMEM; 335 return -ENOMEM;
362 336
363 /* track netlink information */ <<
364 if (nca->req_flags == NCSI_REQ_FLAG_NE <<
365 nr->snd_seq = nca->info->snd_s <<
366 nr->snd_portid = nca->info->sn <<
367 nr->nlhdr = *nca->info->nlhdr; <<
368 } <<
369 <<
370 /* Prepare the packet */ 337 /* Prepare the packet */
371 nca->id = nr->id; 338 nca->id = nr->id;
372 ret = nch->handler(nr->cmd, nca); 339 ret = nch->handler(nr->cmd, nca);
373 if (ret) { 340 if (ret) {
374 ncsi_free_request(nr); 341 ncsi_free_request(nr);
375 return ret; 342 return ret;
376 } 343 }
377 344
378 /* Fill the ethernet header */ 345 /* Fill the ethernet header */
379 eh = skb_push(nr->cmd, sizeof(*eh)); !! 346 eh = (struct ethhdr *)skb_push(nr->cmd, sizeof(*eh));
380 eh->h_proto = htons(ETH_P_NCSI); 347 eh->h_proto = htons(ETH_P_NCSI);
381 eth_broadcast_addr(eh->h_dest); 348 eth_broadcast_addr(eh->h_dest);
382 !! 349 eth_broadcast_addr(eh->h_source);
383 /* If mac address received from device <<
384 * source address as unicast address e <<
385 * address as source address <<
386 */ <<
387 if (nca->ndp->gma_flag == 1) <<
388 memcpy(eh->h_source, nca->ndp- <<
389 else <<
390 eth_broadcast_addr(eh->h_sourc <<
391 350
392 /* Start the timer for the request tha 351 /* Start the timer for the request that might not have
393 * corresponding response. Given NCSI 352 * corresponding response. Given NCSI is an internal
394 * connection a 1 second delay should 353 * connection a 1 second delay should be sufficient.
395 */ 354 */
396 nr->enabled = true; 355 nr->enabled = true;
397 mod_timer(&nr->timer, jiffies + 1 * HZ 356 mod_timer(&nr->timer, jiffies + 1 * HZ);
398 357
399 /* Send NCSI packet */ 358 /* Send NCSI packet */
400 skb_get(nr->cmd); 359 skb_get(nr->cmd);
401 ret = dev_queue_xmit(nr->cmd); 360 ret = dev_queue_xmit(nr->cmd);
402 if (ret < 0) { 361 if (ret < 0) {
403 ncsi_free_request(nr); 362 ncsi_free_request(nr);
404 return ret; 363 return ret;
405 } 364 }
406 365
407 return 0; 366 return 0;
408 } 367 }
409 368
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