dcbnl.c 28.9 KB
Newer Older
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
/*
 * Copyright (c) 2008, Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 * Place - Suite 330, Boston, MA 02111-1307 USA.
 *
 * Author: Lucy Liu <lucy.liu@intel.com>
 */

#include <linux/netdevice.h>
#include <linux/netlink.h>
#include <net/netlink.h>
#include <net/rtnetlink.h>
#include <linux/dcbnl.h>
#include <linux/rtnetlink.h>
#include <net/sock.h>

/**
 * Data Center Bridging (DCB) is a collection of Ethernet enhancements
 * intended to allow network traffic with differing requirements
 * (highly reliable, no drops vs. best effort vs. low latency) to operate
 * and co-exist on Ethernet.  Current DCB features are:
 *
 * Enhanced Transmission Selection (aka Priority Grouping [PG]) - provides a
 *   framework for assigning bandwidth guarantees to traffic classes.
 *
 * Priority-based Flow Control (PFC) - provides a flow control mechanism which
 *   can work independently for each 802.1p priority.
 *
 * Congestion Notification - provides a mechanism for end-to-end congestion
 *   control for protocols which do not have built-in congestion management.
 *
 * More information about the emerging standards for these Ethernet features
 * can be found at: http://www.ieee802.org/1/pages/dcbridges.html
 *
 * This file implements an rtnetlink interface to allow configuration of DCB
 * features for capable devices.
 */

MODULE_AUTHOR("Lucy Liu, <lucy.liu@intel.com>");
J
Jeff Kirsher 已提交
51
MODULE_DESCRIPTION("Data Center Bridging netlink interface");
52 53 54 55 56 57
MODULE_LICENSE("GPL");

/**************** DCB attribute policies *************************************/

/* DCB netlink attributes policy */
static struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = {
A
Alexander Duyck 已提交
58 59 60 61 62
	[DCB_ATTR_IFNAME]      = {.type = NLA_NUL_STRING, .len = IFNAMSIZ - 1},
	[DCB_ATTR_STATE]       = {.type = NLA_U8},
	[DCB_ATTR_PFC_CFG]     = {.type = NLA_NESTED},
	[DCB_ATTR_PG_CFG]      = {.type = NLA_NESTED},
	[DCB_ATTR_SET_ALL]     = {.type = NLA_U8},
63
	[DCB_ATTR_PERM_HWADDR] = {.type = NLA_FLAG},
A
Alexander Duyck 已提交
64 65 66
	[DCB_ATTR_CAP]         = {.type = NLA_NESTED},
	[DCB_ATTR_PFC_STATE]   = {.type = NLA_U8},
	[DCB_ATTR_BCN]         = {.type = NLA_NESTED},
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
};

/* DCB priority flow control to User Priority nested attributes */
static struct nla_policy dcbnl_pfc_up_nest[DCB_PFC_UP_ATTR_MAX + 1] = {
	[DCB_PFC_UP_ATTR_0]   = {.type = NLA_U8},
	[DCB_PFC_UP_ATTR_1]   = {.type = NLA_U8},
	[DCB_PFC_UP_ATTR_2]   = {.type = NLA_U8},
	[DCB_PFC_UP_ATTR_3]   = {.type = NLA_U8},
	[DCB_PFC_UP_ATTR_4]   = {.type = NLA_U8},
	[DCB_PFC_UP_ATTR_5]   = {.type = NLA_U8},
	[DCB_PFC_UP_ATTR_6]   = {.type = NLA_U8},
	[DCB_PFC_UP_ATTR_7]   = {.type = NLA_U8},
	[DCB_PFC_UP_ATTR_ALL] = {.type = NLA_FLAG},
};

/* DCB priority grouping nested attributes */
static struct nla_policy dcbnl_pg_nest[DCB_PG_ATTR_MAX + 1] = {
	[DCB_PG_ATTR_TC_0]      = {.type = NLA_NESTED},
	[DCB_PG_ATTR_TC_1]      = {.type = NLA_NESTED},
	[DCB_PG_ATTR_TC_2]      = {.type = NLA_NESTED},
	[DCB_PG_ATTR_TC_3]      = {.type = NLA_NESTED},
	[DCB_PG_ATTR_TC_4]      = {.type = NLA_NESTED},
	[DCB_PG_ATTR_TC_5]      = {.type = NLA_NESTED},
	[DCB_PG_ATTR_TC_6]      = {.type = NLA_NESTED},
	[DCB_PG_ATTR_TC_7]      = {.type = NLA_NESTED},
	[DCB_PG_ATTR_TC_ALL]    = {.type = NLA_NESTED},
	[DCB_PG_ATTR_BW_ID_0]   = {.type = NLA_U8},
	[DCB_PG_ATTR_BW_ID_1]   = {.type = NLA_U8},
	[DCB_PG_ATTR_BW_ID_2]   = {.type = NLA_U8},
	[DCB_PG_ATTR_BW_ID_3]   = {.type = NLA_U8},
	[DCB_PG_ATTR_BW_ID_4]   = {.type = NLA_U8},
	[DCB_PG_ATTR_BW_ID_5]   = {.type = NLA_U8},
	[DCB_PG_ATTR_BW_ID_6]   = {.type = NLA_U8},
	[DCB_PG_ATTR_BW_ID_7]   = {.type = NLA_U8},
	[DCB_PG_ATTR_BW_ID_ALL] = {.type = NLA_FLAG},
};

/* DCB traffic class nested attributes. */
static struct nla_policy dcbnl_tc_param_nest[DCB_TC_ATTR_PARAM_MAX + 1] = {
	[DCB_TC_ATTR_PARAM_PGID]            = {.type = NLA_U8},
	[DCB_TC_ATTR_PARAM_UP_MAPPING]      = {.type = NLA_U8},
	[DCB_TC_ATTR_PARAM_STRICT_PRIO]     = {.type = NLA_U8},
	[DCB_TC_ATTR_PARAM_BW_PCT]          = {.type = NLA_U8},
	[DCB_TC_ATTR_PARAM_ALL]             = {.type = NLA_FLAG},
};

113 114 115 116 117 118 119 120 121 122 123
/* DCB capabilities nested attributes. */
static struct nla_policy dcbnl_cap_nest[DCB_CAP_ATTR_MAX + 1] = {
	[DCB_CAP_ATTR_ALL]     = {.type = NLA_FLAG},
	[DCB_CAP_ATTR_PG]      = {.type = NLA_U8},
	[DCB_CAP_ATTR_PFC]     = {.type = NLA_U8},
	[DCB_CAP_ATTR_UP2TC]   = {.type = NLA_U8},
	[DCB_CAP_ATTR_PG_TCS]  = {.type = NLA_U8},
	[DCB_CAP_ATTR_PFC_TCS] = {.type = NLA_U8},
	[DCB_CAP_ATTR_GSP]     = {.type = NLA_U8},
	[DCB_CAP_ATTR_BCN]     = {.type = NLA_U8},
};
124

125 126 127 128 129 130 131
/* DCB capabilities nested attributes. */
static struct nla_policy dcbnl_numtcs_nest[DCB_NUMTCS_ATTR_MAX + 1] = {
	[DCB_NUMTCS_ATTR_ALL]     = {.type = NLA_FLAG},
	[DCB_NUMTCS_ATTR_PG]      = {.type = NLA_U8},
	[DCB_NUMTCS_ATTR_PFC]     = {.type = NLA_U8},
};

A
Alexander Duyck 已提交
132 133 134 135 136 137 138 139 140 141 142
/* DCB BCN nested attributes. */
static struct nla_policy dcbnl_bcn_nest[DCB_BCN_ATTR_MAX + 1] = {
	[DCB_BCN_ATTR_RP_0]         = {.type = NLA_U8},
	[DCB_BCN_ATTR_RP_1]         = {.type = NLA_U8},
	[DCB_BCN_ATTR_RP_2]         = {.type = NLA_U8},
	[DCB_BCN_ATTR_RP_3]         = {.type = NLA_U8},
	[DCB_BCN_ATTR_RP_4]         = {.type = NLA_U8},
	[DCB_BCN_ATTR_RP_5]         = {.type = NLA_U8},
	[DCB_BCN_ATTR_RP_6]         = {.type = NLA_U8},
	[DCB_BCN_ATTR_RP_7]         = {.type = NLA_U8},
	[DCB_BCN_ATTR_RP_ALL]       = {.type = NLA_FLAG},
143 144
	[DCB_BCN_ATTR_BCNA_0]       = {.type = NLA_U32},
	[DCB_BCN_ATTR_BCNA_1]       = {.type = NLA_U32},
A
Alexander Duyck 已提交
145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160
	[DCB_BCN_ATTR_ALPHA]        = {.type = NLA_U32},
	[DCB_BCN_ATTR_BETA]         = {.type = NLA_U32},
	[DCB_BCN_ATTR_GD]           = {.type = NLA_U32},
	[DCB_BCN_ATTR_GI]           = {.type = NLA_U32},
	[DCB_BCN_ATTR_TMAX]         = {.type = NLA_U32},
	[DCB_BCN_ATTR_TD]           = {.type = NLA_U32},
	[DCB_BCN_ATTR_RMIN]         = {.type = NLA_U32},
	[DCB_BCN_ATTR_W]            = {.type = NLA_U32},
	[DCB_BCN_ATTR_RD]           = {.type = NLA_U32},
	[DCB_BCN_ATTR_RU]           = {.type = NLA_U32},
	[DCB_BCN_ATTR_WRTT]         = {.type = NLA_U32},
	[DCB_BCN_ATTR_RI]           = {.type = NLA_U32},
	[DCB_BCN_ATTR_C]            = {.type = NLA_U32},
	[DCB_BCN_ATTR_ALL]          = {.type = NLA_FLAG},
};

161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321
/* standard netlink reply call */
static int dcbnl_reply(u8 value, u8 event, u8 cmd, u8 attr, u32 pid,
                       u32 seq, u16 flags)
{
	struct sk_buff *dcbnl_skb;
	struct dcbmsg *dcb;
	struct nlmsghdr *nlh;
	int ret = -EINVAL;

	dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
	if (!dcbnl_skb)
		return ret;

	nlh = NLMSG_NEW(dcbnl_skb, pid, seq, event, sizeof(*dcb), flags);

	dcb = NLMSG_DATA(nlh);
	dcb->dcb_family = AF_UNSPEC;
	dcb->cmd = cmd;
	dcb->dcb_pad = 0;

	ret = nla_put_u8(dcbnl_skb, attr, value);
	if (ret)
		goto err;

	/* end the message, assign the nlmsg_len. */
	nlmsg_end(dcbnl_skb, nlh);
	ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
	if (ret)
		goto err;

	return 0;
nlmsg_failure:
err:
	kfree(dcbnl_skb);
	return ret;
}

static int dcbnl_getstate(struct net_device *netdev, struct nlattr **tb,
                          u32 pid, u32 seq, u16 flags)
{
	int ret = -EINVAL;

	/* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */
	if (!netdev->dcbnl_ops->getstate)
		return ret;

	ret = dcbnl_reply(netdev->dcbnl_ops->getstate(netdev), RTM_GETDCB,
	                  DCB_CMD_GSTATE, DCB_ATTR_STATE, pid, seq, flags);

	return ret;
}

static int dcbnl_getpfccfg(struct net_device *netdev, struct nlattr **tb,
                           u32 pid, u32 seq, u16 flags)
{
	struct sk_buff *dcbnl_skb;
	struct nlmsghdr *nlh;
	struct dcbmsg *dcb;
	struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest;
	u8 value;
	int ret = -EINVAL;
	int i;
	int getall = 0;

	if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->getpfccfg)
		return ret;

	ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
	                       tb[DCB_ATTR_PFC_CFG],
	                       dcbnl_pfc_up_nest);
	if (ret)
		goto err_out;

	dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
	if (!dcbnl_skb)
		goto err_out;

	nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);

	dcb = NLMSG_DATA(nlh);
	dcb->dcb_family = AF_UNSPEC;
	dcb->cmd = DCB_CMD_PFC_GCFG;

	nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PFC_CFG);
	if (!nest)
		goto err;

	if (data[DCB_PFC_UP_ATTR_ALL])
		getall = 1;

	for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
		if (!getall && !data[i])
			continue;

		netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0,
		                             &value);
		ret = nla_put_u8(dcbnl_skb, i, value);

		if (ret) {
			nla_nest_cancel(dcbnl_skb, nest);
			goto err;
		}
	}
	nla_nest_end(dcbnl_skb, nest);

	nlmsg_end(dcbnl_skb, nlh);

	ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
	if (ret)
		goto err;

	return 0;
nlmsg_failure:
err:
	kfree(dcbnl_skb);
err_out:
	return -EINVAL;
}

static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlattr **tb,
                                u32 pid, u32 seq, u16 flags)
{
	struct sk_buff *dcbnl_skb;
	struct nlmsghdr *nlh;
	struct dcbmsg *dcb;
	u8 perm_addr[MAX_ADDR_LEN];
	int ret = -EINVAL;

	if (!netdev->dcbnl_ops->getpermhwaddr)
		return ret;

	dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
	if (!dcbnl_skb)
		goto err_out;

	nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);

	dcb = NLMSG_DATA(nlh);
	dcb->dcb_family = AF_UNSPEC;
	dcb->cmd = DCB_CMD_GPERM_HWADDR;

	netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr);

	ret = nla_put(dcbnl_skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr),
	              perm_addr);

	nlmsg_end(dcbnl_skb, nlh);

	ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
	if (ret)
		goto err;

	return 0;

nlmsg_failure:
err:
	kfree(dcbnl_skb);
err_out:
	return -EINVAL;
}

322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387
static int dcbnl_getcap(struct net_device *netdev, struct nlattr **tb,
                        u32 pid, u32 seq, u16 flags)
{
	struct sk_buff *dcbnl_skb;
	struct nlmsghdr *nlh;
	struct dcbmsg *dcb;
	struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest;
	u8 value;
	int ret = -EINVAL;
	int i;
	int getall = 0;

	if (!tb[DCB_ATTR_CAP] || !netdev->dcbnl_ops->getcap)
		return ret;

	ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP],
	                       dcbnl_cap_nest);
	if (ret)
		goto err_out;

	dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
	if (!dcbnl_skb)
		goto err_out;

	nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);

	dcb = NLMSG_DATA(nlh);
	dcb->dcb_family = AF_UNSPEC;
	dcb->cmd = DCB_CMD_GCAP;

	nest = nla_nest_start(dcbnl_skb, DCB_ATTR_CAP);
	if (!nest)
		goto err;

	if (data[DCB_CAP_ATTR_ALL])
		getall = 1;

	for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) {
		if (!getall && !data[i])
			continue;

		if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) {
			ret = nla_put_u8(dcbnl_skb, i, value);

			if (ret) {
				nla_nest_cancel(dcbnl_skb, nest);
				goto err;
			}
		}
	}
	nla_nest_end(dcbnl_skb, nest);

	nlmsg_end(dcbnl_skb, nlh);

	ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
	if (ret)
		goto err;

	return 0;
nlmsg_failure:
err:
	kfree(dcbnl_skb);
err_out:
	return -EINVAL;
}

388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473
static int dcbnl_getnumtcs(struct net_device *netdev, struct nlattr **tb,
                           u32 pid, u32 seq, u16 flags)
{
	struct sk_buff *dcbnl_skb;
	struct nlmsghdr *nlh;
	struct dcbmsg *dcb;
	struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest;
	u8 value;
	int ret = -EINVAL;
	int i;
	int getall = 0;

	if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->getnumtcs)
		return ret;

	ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
	                       dcbnl_numtcs_nest);
	if (ret) {
		ret = -EINVAL;
		goto err_out;
	}

	dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
	if (!dcbnl_skb) {
		ret = -EINVAL;
		goto err_out;
	}

	nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);

	dcb = NLMSG_DATA(nlh);
	dcb->dcb_family = AF_UNSPEC;
	dcb->cmd = DCB_CMD_GNUMTCS;

	nest = nla_nest_start(dcbnl_skb, DCB_ATTR_NUMTCS);
	if (!nest) {
		ret = -EINVAL;
		goto err;
	}

	if (data[DCB_NUMTCS_ATTR_ALL])
		getall = 1;

	for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
		if (!getall && !data[i])
			continue;

		ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value);
		if (!ret) {
			ret = nla_put_u8(dcbnl_skb, i, value);

			if (ret) {
				nla_nest_cancel(dcbnl_skb, nest);
				ret = -EINVAL;
				goto err;
			}
		} else {
			goto err;
		}
	}
	nla_nest_end(dcbnl_skb, nest);

	nlmsg_end(dcbnl_skb, nlh);

	ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
	if (ret) {
		ret = -EINVAL;
		goto err;
	}

	return 0;
nlmsg_failure:
err:
	kfree(dcbnl_skb);
err_out:
	return ret;
}

static int dcbnl_setnumtcs(struct net_device *netdev, struct nlattr **tb,
                           u32 pid, u32 seq, u16 flags)
{
	struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1];
	int ret = -EINVAL;
	u8 value;
	int i;

474
	if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->setnumtcs)
475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504
		return ret;

	ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
	                       dcbnl_numtcs_nest);

	if (ret) {
		ret = -EINVAL;
		goto err;
	}

	for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
		if (data[i] == NULL)
			continue;

		value = nla_get_u8(data[i]);

		ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value);

		if (ret)
			goto operr;
	}

operr:
	ret = dcbnl_reply(!!ret, RTM_SETDCB, DCB_CMD_SNUMTCS,
	                  DCB_ATTR_NUMTCS, pid, seq, flags);

err:
	return ret;
}

505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538
static int dcbnl_getpfcstate(struct net_device *netdev, struct nlattr **tb,
                             u32 pid, u32 seq, u16 flags)
{
	int ret = -EINVAL;

	if (!netdev->dcbnl_ops->getpfcstate)
		return ret;

	ret = dcbnl_reply(netdev->dcbnl_ops->getpfcstate(netdev), RTM_GETDCB,
	                  DCB_CMD_PFC_GSTATE, DCB_ATTR_PFC_STATE,
	                  pid, seq, flags);

	return ret;
}

static int dcbnl_setpfcstate(struct net_device *netdev, struct nlattr **tb,
                             u32 pid, u32 seq, u16 flags)
{
	int ret = -EINVAL;
	u8 value;

	if (!tb[DCB_ATTR_PFC_STATE] || !netdev->dcbnl_ops->setpfcstate)
		return ret;

	value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]);

	netdev->dcbnl_ops->setpfcstate(netdev, value);

	ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SSTATE, DCB_ATTR_PFC_STATE,
	                  pid, seq, flags);

	return ret;
}

539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718
static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlattr **tb,
                             u32 pid, u32 seq, u16 flags, int dir)
{
	struct sk_buff *dcbnl_skb;
	struct nlmsghdr *nlh;
	struct dcbmsg *dcb;
	struct nlattr *pg_nest, *param_nest, *data;
	struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
	struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
	u8 prio, pgid, tc_pct, up_map;
	int ret  = -EINVAL;
	int getall = 0;
	int i;

	if (!tb[DCB_ATTR_PG_CFG] ||
	    !netdev->dcbnl_ops->getpgtccfgtx ||
	    !netdev->dcbnl_ops->getpgtccfgrx ||
	    !netdev->dcbnl_ops->getpgbwgcfgtx ||
	    !netdev->dcbnl_ops->getpgbwgcfgrx)
		return ret;

	ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
	                       tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);

	if (ret)
		goto err_out;

	dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
	if (!dcbnl_skb)
		goto err_out;

	nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);

	dcb = NLMSG_DATA(nlh);
	dcb->dcb_family = AF_UNSPEC;
	dcb->cmd = (dir) ? DCB_CMD_PGRX_GCFG : DCB_CMD_PGTX_GCFG;

	pg_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PG_CFG);
	if (!pg_nest)
		goto err;

	if (pg_tb[DCB_PG_ATTR_TC_ALL])
		getall = 1;

	for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
		if (!getall && !pg_tb[i])
			continue;

		if (pg_tb[DCB_PG_ATTR_TC_ALL])
			data = pg_tb[DCB_PG_ATTR_TC_ALL];
		else
			data = pg_tb[i];
		ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
				       data, dcbnl_tc_param_nest);
		if (ret)
			goto err_pg;

		param_nest = nla_nest_start(dcbnl_skb, i);
		if (!param_nest)
			goto err_pg;

		pgid = DCB_ATTR_VALUE_UNDEFINED;
		prio = DCB_ATTR_VALUE_UNDEFINED;
		tc_pct = DCB_ATTR_VALUE_UNDEFINED;
		up_map = DCB_ATTR_VALUE_UNDEFINED;

		if (dir) {
			/* Rx */
			netdev->dcbnl_ops->getpgtccfgrx(netdev,
						i - DCB_PG_ATTR_TC_0, &prio,
						&pgid, &tc_pct, &up_map);
		} else {
			/* Tx */
			netdev->dcbnl_ops->getpgtccfgtx(netdev,
						i - DCB_PG_ATTR_TC_0, &prio,
						&pgid, &tc_pct, &up_map);
		}

		if (param_tb[DCB_TC_ATTR_PARAM_PGID] ||
		    param_tb[DCB_TC_ATTR_PARAM_ALL]) {
			ret = nla_put_u8(dcbnl_skb,
			                 DCB_TC_ATTR_PARAM_PGID, pgid);
			if (ret)
				goto err_param;
		}
		if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] ||
		    param_tb[DCB_TC_ATTR_PARAM_ALL]) {
			ret = nla_put_u8(dcbnl_skb,
			                 DCB_TC_ATTR_PARAM_UP_MAPPING, up_map);
			if (ret)
				goto err_param;
		}
		if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] ||
		    param_tb[DCB_TC_ATTR_PARAM_ALL]) {
			ret = nla_put_u8(dcbnl_skb,
			                 DCB_TC_ATTR_PARAM_STRICT_PRIO, prio);
			if (ret)
				goto err_param;
		}
		if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] ||
		    param_tb[DCB_TC_ATTR_PARAM_ALL]) {
			ret = nla_put_u8(dcbnl_skb, DCB_TC_ATTR_PARAM_BW_PCT,
			                 tc_pct);
			if (ret)
				goto err_param;
		}
		nla_nest_end(dcbnl_skb, param_nest);
	}

	if (pg_tb[DCB_PG_ATTR_BW_ID_ALL])
		getall = 1;
	else
		getall = 0;

	for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
		if (!getall && !pg_tb[i])
			continue;

		tc_pct = DCB_ATTR_VALUE_UNDEFINED;

		if (dir) {
			/* Rx */
			netdev->dcbnl_ops->getpgbwgcfgrx(netdev,
					i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
		} else {
			/* Tx */
			netdev->dcbnl_ops->getpgbwgcfgtx(netdev,
					i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
		}
		ret = nla_put_u8(dcbnl_skb, i, tc_pct);

		if (ret)
			goto err_pg;
	}

	nla_nest_end(dcbnl_skb, pg_nest);

	nlmsg_end(dcbnl_skb, nlh);

	ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
	if (ret)
		goto err;

	return 0;

err_param:
	nla_nest_cancel(dcbnl_skb, param_nest);
err_pg:
	nla_nest_cancel(dcbnl_skb, pg_nest);
nlmsg_failure:
err:
	kfree(dcbnl_skb);
err_out:
	ret  = -EINVAL;
	return ret;
}

static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlattr **tb,
                             u32 pid, u32 seq, u16 flags)
{
	return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 0);
}

static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlattr **tb,
                             u32 pid, u32 seq, u16 flags)
{
	return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 1);
}

static int dcbnl_setstate(struct net_device *netdev, struct nlattr **tb,
                          u32 pid, u32 seq, u16 flags)
{
	int ret = -EINVAL;
	u8 value;

	if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->setstate)
		return ret;

	value = nla_get_u8(tb[DCB_ATTR_STATE]);

719 720
	ret = dcbnl_reply(netdev->dcbnl_ops->setstate(netdev, value),
	                  RTM_SETDCB, DCB_CMD_SSTATE, DCB_ATTR_STATE,
721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874
	                  pid, seq, flags);

	return ret;
}

static int dcbnl_setpfccfg(struct net_device *netdev, struct nlattr **tb,
                           u32 pid, u32 seq, u16 flags)
{
	struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1];
	int i;
	int ret = -EINVAL;
	u8 value;

	if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->setpfccfg)
		return ret;

	ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
	                       tb[DCB_ATTR_PFC_CFG],
	                       dcbnl_pfc_up_nest);
	if (ret)
		goto err;

	for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
		if (data[i] == NULL)
			continue;
		value = nla_get_u8(data[i]);
		netdev->dcbnl_ops->setpfccfg(netdev,
			data[i]->nla_type - DCB_PFC_UP_ATTR_0, value);
	}

	ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SCFG, DCB_ATTR_PFC_CFG,
	                  pid, seq, flags);
err:
	return ret;
}

static int dcbnl_setall(struct net_device *netdev, struct nlattr **tb,
                        u32 pid, u32 seq, u16 flags)
{
	int ret = -EINVAL;

	if (!tb[DCB_ATTR_SET_ALL] || !netdev->dcbnl_ops->setall)
		return ret;

	ret = dcbnl_reply(netdev->dcbnl_ops->setall(netdev), RTM_SETDCB,
	                  DCB_CMD_SET_ALL, DCB_ATTR_SET_ALL, pid, seq, flags);

	return ret;
}

static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlattr **tb,
                             u32 pid, u32 seq, u16 flags, int dir)
{
	struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
	struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
	int ret = -EINVAL;
	int i;
	u8 pgid;
	u8 up_map;
	u8 prio;
	u8 tc_pct;

	if (!tb[DCB_ATTR_PG_CFG] ||
	    !netdev->dcbnl_ops->setpgtccfgtx ||
	    !netdev->dcbnl_ops->setpgtccfgrx ||
	    !netdev->dcbnl_ops->setpgbwgcfgtx ||
	    !netdev->dcbnl_ops->setpgbwgcfgrx)
		return ret;

	ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
	                       tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
	if (ret)
		goto err;

	for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
		if (!pg_tb[i])
			continue;

		ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
		                       pg_tb[i], dcbnl_tc_param_nest);
		if (ret)
			goto err;

		pgid = DCB_ATTR_VALUE_UNDEFINED;
		prio = DCB_ATTR_VALUE_UNDEFINED;
		tc_pct = DCB_ATTR_VALUE_UNDEFINED;
		up_map = DCB_ATTR_VALUE_UNDEFINED;

		if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO])
			prio =
			    nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]);

		if (param_tb[DCB_TC_ATTR_PARAM_PGID])
			pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]);

		if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT])
			tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]);

		if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING])
			up_map =
			     nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]);

		/* dir: Tx = 0, Rx = 1 */
		if (dir) {
			/* Rx */
			netdev->dcbnl_ops->setpgtccfgrx(netdev,
				i - DCB_PG_ATTR_TC_0,
				prio, pgid, tc_pct, up_map);
		} else {
			/* Tx */
			netdev->dcbnl_ops->setpgtccfgtx(netdev,
				i - DCB_PG_ATTR_TC_0,
				prio, pgid, tc_pct, up_map);
		}
	}

	for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
		if (!pg_tb[i])
			continue;

		tc_pct = nla_get_u8(pg_tb[i]);

		/* dir: Tx = 0, Rx = 1 */
		if (dir) {
			/* Rx */
			netdev->dcbnl_ops->setpgbwgcfgrx(netdev,
					 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
		} else {
			/* Tx */
			netdev->dcbnl_ops->setpgbwgcfgtx(netdev,
					 i - DCB_PG_ATTR_BW_ID_0, tc_pct);
		}
	}

	ret = dcbnl_reply(0, RTM_SETDCB,
			  (dir ? DCB_CMD_PGRX_SCFG : DCB_CMD_PGTX_SCFG),
			  DCB_ATTR_PG_CFG, pid, seq, flags);

err:
	return ret;
}

static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlattr **tb,
                             u32 pid, u32 seq, u16 flags)
{
	return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 0);
}

static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlattr **tb,
                             u32 pid, u32 seq, u16 flags)
{
	return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 1);
}

A
Alexander Duyck 已提交
875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926
static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlattr **tb,
                            u32 pid, u32 seq, u16 flags)
{
	struct sk_buff *dcbnl_skb;
	struct nlmsghdr *nlh;
	struct dcbmsg *dcb;
	struct nlattr *bcn_nest;
	struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1];
	u8 value_byte;
	u32 value_integer;
	int ret  = -EINVAL;
	bool getall = false;
	int i;

	if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->getbcnrp ||
	    !netdev->dcbnl_ops->getbcncfg)
		return ret;

	ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX,
	                       tb[DCB_ATTR_BCN], dcbnl_bcn_nest);

	if (ret)
		goto err_out;

	dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
	if (!dcbnl_skb)
		goto err_out;

	nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);

	dcb = NLMSG_DATA(nlh);
	dcb->dcb_family = AF_UNSPEC;
	dcb->cmd = DCB_CMD_BCN_GCFG;

	bcn_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_BCN);
	if (!bcn_nest)
		goto err;

	if (bcn_tb[DCB_BCN_ATTR_ALL])
		getall = true;

	for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
		if (!getall && !bcn_tb[i])
			continue;

		netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0,
		                            &value_byte);
		ret = nla_put_u8(dcbnl_skb, i, value_byte);
		if (ret)
			goto err_bcn;
	}

927
	for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
A
Alexander Duyck 已提交
928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984
		if (!getall && !bcn_tb[i])
			continue;

		netdev->dcbnl_ops->getbcncfg(netdev, i,
		                             &value_integer);
		ret = nla_put_u32(dcbnl_skb, i, value_integer);
		if (ret)
			goto err_bcn;
	}

	nla_nest_end(dcbnl_skb, bcn_nest);

	nlmsg_end(dcbnl_skb, nlh);

	ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
	if (ret)
		goto err;

	return 0;

err_bcn:
	nla_nest_cancel(dcbnl_skb, bcn_nest);
nlmsg_failure:
err:
	kfree(dcbnl_skb);
err_out:
	ret  = -EINVAL;
	return ret;
}

static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlattr **tb,
                            u32 pid, u32 seq, u16 flags)
{
	struct nlattr *data[DCB_BCN_ATTR_MAX + 1];
	int i;
	int ret = -EINVAL;
	u8 value_byte;
	u32 value_int;

	if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->setbcncfg
	    || !netdev->dcbnl_ops->setbcnrp)
		return ret;

	ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX,
	                       tb[DCB_ATTR_BCN],
	                       dcbnl_pfc_up_nest);
	if (ret)
		goto err;

	for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
		if (data[i] == NULL)
			continue;
		value_byte = nla_get_u8(data[i]);
		netdev->dcbnl_ops->setbcnrp(netdev,
			data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte);
	}

985
	for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
A
Alexander Duyck 已提交
986 987 988 989 990 991 992 993 994 995 996 997 998
		if (data[i] == NULL)
			continue;
		value_int = nla_get_u32(data[i]);
		netdev->dcbnl_ops->setbcncfg(netdev,
	                                     i, value_int);
	}

	ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_BCN_SCFG, DCB_ATTR_BCN,
	                  pid, seq, flags);
err:
	return ret;
}

999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046
static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
	struct net *net = sock_net(skb->sk);
	struct net_device *netdev;
	struct dcbmsg  *dcb = (struct dcbmsg *)NLMSG_DATA(nlh);
	struct nlattr *tb[DCB_ATTR_MAX + 1];
	u32 pid = skb ? NETLINK_CB(skb).pid : 0;
	int ret = -EINVAL;

	if (net != &init_net)
		return -EINVAL;

	ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX,
			  dcbnl_rtnl_policy);
	if (ret < 0)
		return ret;

	if (!tb[DCB_ATTR_IFNAME])
		return -EINVAL;

	netdev = dev_get_by_name(&init_net, nla_data(tb[DCB_ATTR_IFNAME]));
	if (!netdev)
		return -EINVAL;

	if (!netdev->dcbnl_ops)
		goto errout;

	switch (dcb->cmd) {
	case DCB_CMD_GSTATE:
		ret = dcbnl_getstate(netdev, tb, pid, nlh->nlmsg_seq,
		                     nlh->nlmsg_flags);
		goto out;
	case DCB_CMD_PFC_GCFG:
		ret = dcbnl_getpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
		                      nlh->nlmsg_flags);
		goto out;
	case DCB_CMD_GPERM_HWADDR:
		ret = dcbnl_getperm_hwaddr(netdev, tb, pid, nlh->nlmsg_seq,
		                           nlh->nlmsg_flags);
		goto out;
	case DCB_CMD_PGTX_GCFG:
		ret = dcbnl_pgtx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
		                        nlh->nlmsg_flags);
		goto out;
	case DCB_CMD_PGRX_GCFG:
		ret = dcbnl_pgrx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
		                        nlh->nlmsg_flags);
		goto out;
A
Alexander Duyck 已提交
1047 1048 1049 1050
	case DCB_CMD_BCN_GCFG:
		ret = dcbnl_bcn_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
		                       nlh->nlmsg_flags);
		goto out;
1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071
	case DCB_CMD_SSTATE:
		ret = dcbnl_setstate(netdev, tb, pid, nlh->nlmsg_seq,
		                     nlh->nlmsg_flags);
		goto out;
	case DCB_CMD_PFC_SCFG:
		ret = dcbnl_setpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
		                      nlh->nlmsg_flags);
		goto out;

	case DCB_CMD_SET_ALL:
		ret = dcbnl_setall(netdev, tb, pid, nlh->nlmsg_seq,
		                   nlh->nlmsg_flags);
		goto out;
	case DCB_CMD_PGTX_SCFG:
		ret = dcbnl_pgtx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
		                        nlh->nlmsg_flags);
		goto out;
	case DCB_CMD_PGRX_SCFG:
		ret = dcbnl_pgrx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
		                        nlh->nlmsg_flags);
		goto out;
1072 1073 1074 1075
	case DCB_CMD_GCAP:
		ret = dcbnl_getcap(netdev, tb, pid, nlh->nlmsg_seq,
		                   nlh->nlmsg_flags);
		goto out;
1076 1077 1078 1079 1080 1081 1082 1083
	case DCB_CMD_GNUMTCS:
		ret = dcbnl_getnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
		                      nlh->nlmsg_flags);
		goto out;
	case DCB_CMD_SNUMTCS:
		ret = dcbnl_setnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
		                      nlh->nlmsg_flags);
		goto out;
1084 1085 1086 1087 1088 1089 1090 1091
	case DCB_CMD_PFC_GSTATE:
		ret = dcbnl_getpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
		                        nlh->nlmsg_flags);
		goto out;
	case DCB_CMD_PFC_SSTATE:
		ret = dcbnl_setpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
		                        nlh->nlmsg_flags);
		goto out;
A
Alexander Duyck 已提交
1092 1093 1094 1095
	case DCB_CMD_BCN_SCFG:
		ret = dcbnl_bcn_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
		                       nlh->nlmsg_flags);
		goto out;
1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122
	default:
		goto errout;
	}
errout:
	ret = -EINVAL;
out:
	dev_put(netdev);
	return ret;
}

static int __init dcbnl_init(void)
{
	rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL);
	rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL);

	return 0;
}
module_init(dcbnl_init);

static void __exit dcbnl_exit(void)
{
	rtnl_unregister(PF_UNSPEC, RTM_GETDCB);
	rtnl_unregister(PF_UNSPEC, RTM_SETDCB);
}
module_exit(dcbnl_exit);