/net/dcb/dcbnl.c
C | 2065 lines | 1574 code | 349 blank | 142 comment | 324 complexity | 3da6c68d4288be363a4197b8ae0c7b86 MD5 | raw file
Possible License(s): AGPL-1.0, GPL-2.0, LGPL-2.0
- // SPDX-License-Identifier: GPL-2.0-only
- /*
- * Copyright (c) 2008-2011, Intel Corporation.
- *
- * Description: Data Center Bridging netlink interface
- * Author: Lucy Liu <lucy.liu@intel.com>
- */
- #include <linux/netdevice.h>
- #include <linux/netlink.h>
- #include <linux/slab.h>
- #include <net/netlink.h>
- #include <net/rtnetlink.h>
- #include <linux/dcbnl.h>
- #include <net/dcbevent.h>
- #include <linux/rtnetlink.h>
- #include <linux/init.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.
- */
- /**************** DCB attribute policies *************************************/
- /* DCB netlink attributes policy */
- static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = {
- [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},
- [DCB_ATTR_PERM_HWADDR] = {.type = NLA_FLAG},
- [DCB_ATTR_CAP] = {.type = NLA_NESTED},
- [DCB_ATTR_PFC_STATE] = {.type = NLA_U8},
- [DCB_ATTR_BCN] = {.type = NLA_NESTED},
- [DCB_ATTR_APP] = {.type = NLA_NESTED},
- [DCB_ATTR_IEEE] = {.type = NLA_NESTED},
- [DCB_ATTR_DCBX] = {.type = NLA_U8},
- [DCB_ATTR_FEATCFG] = {.type = NLA_NESTED},
- };
- /* DCB priority flow control to User Priority nested attributes */
- static const 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 const 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 const 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},
- };
- /* DCB capabilities nested attributes. */
- static const 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},
- [DCB_CAP_ATTR_DCBX] = {.type = NLA_U8},
- };
- /* DCB capabilities nested attributes. */
- static const 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},
- };
- /* DCB BCN nested attributes. */
- static const 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},
- [DCB_BCN_ATTR_BCNA_0] = {.type = NLA_U32},
- [DCB_BCN_ATTR_BCNA_1] = {.type = NLA_U32},
- [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},
- };
- /* DCB APP nested attributes. */
- static const struct nla_policy dcbnl_app_nest[DCB_APP_ATTR_MAX + 1] = {
- [DCB_APP_ATTR_IDTYPE] = {.type = NLA_U8},
- [DCB_APP_ATTR_ID] = {.type = NLA_U16},
- [DCB_APP_ATTR_PRIORITY] = {.type = NLA_U8},
- };
- /* IEEE 802.1Qaz nested attributes. */
- static const struct nla_policy dcbnl_ieee_policy[DCB_ATTR_IEEE_MAX + 1] = {
- [DCB_ATTR_IEEE_ETS] = {.len = sizeof(struct ieee_ets)},
- [DCB_ATTR_IEEE_PFC] = {.len = sizeof(struct ieee_pfc)},
- [DCB_ATTR_IEEE_APP_TABLE] = {.type = NLA_NESTED},
- [DCB_ATTR_IEEE_MAXRATE] = {.len = sizeof(struct ieee_maxrate)},
- [DCB_ATTR_IEEE_QCN] = {.len = sizeof(struct ieee_qcn)},
- [DCB_ATTR_IEEE_QCN_STATS] = {.len = sizeof(struct ieee_qcn_stats)},
- [DCB_ATTR_DCB_BUFFER] = {.len = sizeof(struct dcbnl_buffer)},
- };
- /* DCB number of traffic classes nested attributes. */
- static const struct nla_policy dcbnl_featcfg_nest[DCB_FEATCFG_ATTR_MAX + 1] = {
- [DCB_FEATCFG_ATTR_ALL] = {.type = NLA_FLAG},
- [DCB_FEATCFG_ATTR_PG] = {.type = NLA_U8},
- [DCB_FEATCFG_ATTR_PFC] = {.type = NLA_U8},
- [DCB_FEATCFG_ATTR_APP] = {.type = NLA_U8},
- };
- static LIST_HEAD(dcb_app_list);
- static DEFINE_SPINLOCK(dcb_lock);
- static struct sk_buff *dcbnl_newmsg(int type, u8 cmd, u32 port, u32 seq,
- u32 flags, struct nlmsghdr **nlhp)
- {
- struct sk_buff *skb;
- struct dcbmsg *dcb;
- struct nlmsghdr *nlh;
- skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!skb)
- return NULL;
- nlh = nlmsg_put(skb, port, seq, type, sizeof(*dcb), flags);
- BUG_ON(!nlh);
- dcb = nlmsg_data(nlh);
- dcb->dcb_family = AF_UNSPEC;
- dcb->cmd = cmd;
- dcb->dcb_pad = 0;
- if (nlhp)
- *nlhp = nlh;
- return skb;
- }
- static int dcbnl_getstate(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- /* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */
- if (!netdev->dcbnl_ops->getstate)
- return -EOPNOTSUPP;
- return nla_put_u8(skb, DCB_ATTR_STATE,
- netdev->dcbnl_ops->getstate(netdev));
- }
- static int dcbnl_getpfccfg(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest;
- u8 value;
- int ret;
- int i;
- int getall = 0;
- if (!tb[DCB_ATTR_PFC_CFG])
- return -EINVAL;
- if (!netdev->dcbnl_ops->getpfccfg)
- return -EOPNOTSUPP;
- ret = nla_parse_nested_deprecated(data, DCB_PFC_UP_ATTR_MAX,
- tb[DCB_ATTR_PFC_CFG],
- dcbnl_pfc_up_nest, NULL);
- if (ret)
- return ret;
- nest = nla_nest_start_noflag(skb, DCB_ATTR_PFC_CFG);
- if (!nest)
- return -EMSGSIZE;
- 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(skb, i, value);
- if (ret) {
- nla_nest_cancel(skb, nest);
- return ret;
- }
- }
- nla_nest_end(skb, nest);
- return 0;
- }
- static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- u8 perm_addr[MAX_ADDR_LEN];
- if (!netdev->dcbnl_ops->getpermhwaddr)
- return -EOPNOTSUPP;
- memset(perm_addr, 0, sizeof(perm_addr));
- netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr);
- return nla_put(skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr), perm_addr);
- }
- static int dcbnl_getcap(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest;
- u8 value;
- int ret;
- int i;
- int getall = 0;
- if (!tb[DCB_ATTR_CAP])
- return -EINVAL;
- if (!netdev->dcbnl_ops->getcap)
- return -EOPNOTSUPP;
- ret = nla_parse_nested_deprecated(data, DCB_CAP_ATTR_MAX,
- tb[DCB_ATTR_CAP], dcbnl_cap_nest,
- NULL);
- if (ret)
- return ret;
- nest = nla_nest_start_noflag(skb, DCB_ATTR_CAP);
- if (!nest)
- return -EMSGSIZE;
- 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(skb, i, value);
- if (ret) {
- nla_nest_cancel(skb, nest);
- return ret;
- }
- }
- }
- nla_nest_end(skb, nest);
- return 0;
- }
- static int dcbnl_getnumtcs(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest;
- u8 value;
- int ret;
- int i;
- int getall = 0;
- if (!tb[DCB_ATTR_NUMTCS])
- return -EINVAL;
- if (!netdev->dcbnl_ops->getnumtcs)
- return -EOPNOTSUPP;
- ret = nla_parse_nested_deprecated(data, DCB_NUMTCS_ATTR_MAX,
- tb[DCB_ATTR_NUMTCS],
- dcbnl_numtcs_nest, NULL);
- if (ret)
- return ret;
- nest = nla_nest_start_noflag(skb, DCB_ATTR_NUMTCS);
- if (!nest)
- return -EMSGSIZE;
- 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(skb, i, value);
- if (ret) {
- nla_nest_cancel(skb, nest);
- return ret;
- }
- } else
- return -EINVAL;
- }
- nla_nest_end(skb, nest);
- return 0;
- }
- static int dcbnl_setnumtcs(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1];
- int ret;
- u8 value;
- int i;
- if (!tb[DCB_ATTR_NUMTCS])
- return -EINVAL;
- if (!netdev->dcbnl_ops->setnumtcs)
- return -EOPNOTSUPP;
- ret = nla_parse_nested_deprecated(data, DCB_NUMTCS_ATTR_MAX,
- tb[DCB_ATTR_NUMTCS],
- dcbnl_numtcs_nest, NULL);
- if (ret)
- return ret;
- 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)
- break;
- }
- return nla_put_u8(skb, DCB_ATTR_NUMTCS, !!ret);
- }
- static int dcbnl_getpfcstate(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- if (!netdev->dcbnl_ops->getpfcstate)
- return -EOPNOTSUPP;
- return nla_put_u8(skb, DCB_ATTR_PFC_STATE,
- netdev->dcbnl_ops->getpfcstate(netdev));
- }
- static int dcbnl_setpfcstate(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- u8 value;
- if (!tb[DCB_ATTR_PFC_STATE])
- return -EINVAL;
- if (!netdev->dcbnl_ops->setpfcstate)
- return -EOPNOTSUPP;
- value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]);
- netdev->dcbnl_ops->setpfcstate(netdev, value);
- return nla_put_u8(skb, DCB_ATTR_PFC_STATE, 0);
- }
- static int dcbnl_getapp(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- struct nlattr *app_nest;
- struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
- u16 id;
- u8 up, idtype;
- int ret;
- if (!tb[DCB_ATTR_APP])
- return -EINVAL;
- ret = nla_parse_nested_deprecated(app_tb, DCB_APP_ATTR_MAX,
- tb[DCB_ATTR_APP], dcbnl_app_nest,
- NULL);
- if (ret)
- return ret;
- /* all must be non-null */
- if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
- (!app_tb[DCB_APP_ATTR_ID]))
- return -EINVAL;
- /* either by eth type or by socket number */
- idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
- if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
- (idtype != DCB_APP_IDTYPE_PORTNUM))
- return -EINVAL;
- id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
- if (netdev->dcbnl_ops->getapp) {
- ret = netdev->dcbnl_ops->getapp(netdev, idtype, id);
- if (ret < 0)
- return ret;
- else
- up = ret;
- } else {
- struct dcb_app app = {
- .selector = idtype,
- .protocol = id,
- };
- up = dcb_getapp(netdev, &app);
- }
- app_nest = nla_nest_start_noflag(skb, DCB_ATTR_APP);
- if (!app_nest)
- return -EMSGSIZE;
- ret = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE, idtype);
- if (ret)
- goto out_cancel;
- ret = nla_put_u16(skb, DCB_APP_ATTR_ID, id);
- if (ret)
- goto out_cancel;
- ret = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY, up);
- if (ret)
- goto out_cancel;
- nla_nest_end(skb, app_nest);
- return 0;
- out_cancel:
- nla_nest_cancel(skb, app_nest);
- return ret;
- }
- static int dcbnl_setapp(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- int ret;
- u16 id;
- u8 up, idtype;
- struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
- if (!tb[DCB_ATTR_APP])
- return -EINVAL;
- ret = nla_parse_nested_deprecated(app_tb, DCB_APP_ATTR_MAX,
- tb[DCB_ATTR_APP], dcbnl_app_nest,
- NULL);
- if (ret)
- return ret;
- /* all must be non-null */
- if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
- (!app_tb[DCB_APP_ATTR_ID]) ||
- (!app_tb[DCB_APP_ATTR_PRIORITY]))
- return -EINVAL;
- /* either by eth type or by socket number */
- idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
- if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
- (idtype != DCB_APP_IDTYPE_PORTNUM))
- return -EINVAL;
- id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
- up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]);
- if (netdev->dcbnl_ops->setapp) {
- ret = netdev->dcbnl_ops->setapp(netdev, idtype, id, up);
- if (ret < 0)
- return ret;
- } else {
- struct dcb_app app;
- app.selector = idtype;
- app.protocol = id;
- app.priority = up;
- ret = dcb_setapp(netdev, &app);
- }
- ret = nla_put_u8(skb, DCB_ATTR_APP, ret);
- dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SAPP, seq, 0);
- return ret;
- }
- static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
- struct nlattr **tb, struct sk_buff *skb, int dir)
- {
- 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;
- int getall = 0;
- int i;
- if (!tb[DCB_ATTR_PG_CFG])
- return -EINVAL;
- if (!netdev->dcbnl_ops->getpgtccfgtx ||
- !netdev->dcbnl_ops->getpgtccfgrx ||
- !netdev->dcbnl_ops->getpgbwgcfgtx ||
- !netdev->dcbnl_ops->getpgbwgcfgrx)
- return -EOPNOTSUPP;
- ret = nla_parse_nested_deprecated(pg_tb, DCB_PG_ATTR_MAX,
- tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest,
- NULL);
- if (ret)
- return ret;
- pg_nest = nla_nest_start_noflag(skb, DCB_ATTR_PG_CFG);
- if (!pg_nest)
- return -EMSGSIZE;
- 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_deprecated(param_tb,
- DCB_TC_ATTR_PARAM_MAX, data,
- dcbnl_tc_param_nest, NULL);
- if (ret)
- goto err_pg;
- param_nest = nla_nest_start_noflag(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(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(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(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(skb, DCB_TC_ATTR_PARAM_BW_PCT,
- tc_pct);
- if (ret)
- goto err_param;
- }
- nla_nest_end(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(skb, i, tc_pct);
- if (ret)
- goto err_pg;
- }
- nla_nest_end(skb, pg_nest);
- return 0;
- err_param:
- nla_nest_cancel(skb, param_nest);
- err_pg:
- nla_nest_cancel(skb, pg_nest);
- return -EMSGSIZE;
- }
- static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, 0);
- }
- static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, 1);
- }
- static int dcbnl_setstate(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- u8 value;
- if (!tb[DCB_ATTR_STATE])
- return -EINVAL;
- if (!netdev->dcbnl_ops->setstate)
- return -EOPNOTSUPP;
- value = nla_get_u8(tb[DCB_ATTR_STATE]);
- return nla_put_u8(skb, DCB_ATTR_STATE,
- netdev->dcbnl_ops->setstate(netdev, value));
- }
- static int dcbnl_setpfccfg(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1];
- int i;
- int ret;
- u8 value;
- if (!tb[DCB_ATTR_PFC_CFG])
- return -EINVAL;
- if (!netdev->dcbnl_ops->setpfccfg)
- return -EOPNOTSUPP;
- ret = nla_parse_nested_deprecated(data, DCB_PFC_UP_ATTR_MAX,
- tb[DCB_ATTR_PFC_CFG],
- dcbnl_pfc_up_nest, NULL);
- if (ret)
- return ret;
- 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);
- }
- return nla_put_u8(skb, DCB_ATTR_PFC_CFG, 0);
- }
- static int dcbnl_setall(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- int ret;
- if (!tb[DCB_ATTR_SET_ALL])
- return -EINVAL;
- if (!netdev->dcbnl_ops->setall)
- return -EOPNOTSUPP;
- ret = nla_put_u8(skb, DCB_ATTR_SET_ALL,
- netdev->dcbnl_ops->setall(netdev));
- dcbnl_cee_notify(netdev, RTM_SETDCB, DCB_CMD_SET_ALL, seq, 0);
- return ret;
- }
- static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb,
- int dir)
- {
- struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
- struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
- int ret;
- int i;
- u8 pgid;
- u8 up_map;
- u8 prio;
- u8 tc_pct;
- if (!tb[DCB_ATTR_PG_CFG])
- return -EINVAL;
- if (!netdev->dcbnl_ops->setpgtccfgtx ||
- !netdev->dcbnl_ops->setpgtccfgrx ||
- !netdev->dcbnl_ops->setpgbwgcfgtx ||
- !netdev->dcbnl_ops->setpgbwgcfgrx)
- return -EOPNOTSUPP;
- ret = nla_parse_nested_deprecated(pg_tb, DCB_PG_ATTR_MAX,
- tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest,
- NULL);
- if (ret)
- return ret;
- for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
- if (!pg_tb[i])
- continue;
- ret = nla_parse_nested_deprecated(param_tb,
- DCB_TC_ATTR_PARAM_MAX,
- pg_tb[i],
- dcbnl_tc_param_nest, NULL);
- if (ret)
- return ret;
- 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);
- }
- }
- return nla_put_u8(skb, DCB_ATTR_PG_CFG, 0);
- }
- static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, 0);
- }
- static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, 1);
- }
- static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- struct nlattr *bcn_nest;
- struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1];
- u8 value_byte;
- u32 value_integer;
- int ret;
- bool getall = false;
- int i;
- if (!tb[DCB_ATTR_BCN])
- return -EINVAL;
- if (!netdev->dcbnl_ops->getbcnrp ||
- !netdev->dcbnl_ops->getbcncfg)
- return -EOPNOTSUPP;
- ret = nla_parse_nested_deprecated(bcn_tb, DCB_BCN_ATTR_MAX,
- tb[DCB_ATTR_BCN], dcbnl_bcn_nest,
- NULL);
- if (ret)
- return ret;
- bcn_nest = nla_nest_start_noflag(skb, DCB_ATTR_BCN);
- if (!bcn_nest)
- return -EMSGSIZE;
- 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(skb, i, value_byte);
- if (ret)
- goto err_bcn;
- }
- for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
- if (!getall && !bcn_tb[i])
- continue;
- netdev->dcbnl_ops->getbcncfg(netdev, i,
- &value_integer);
- ret = nla_put_u32(skb, i, value_integer);
- if (ret)
- goto err_bcn;
- }
- nla_nest_end(skb, bcn_nest);
- return 0;
- err_bcn:
- nla_nest_cancel(skb, bcn_nest);
- return ret;
- }
- static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- struct nlattr *data[DCB_BCN_ATTR_MAX + 1];
- int i;
- int ret;
- u8 value_byte;
- u32 value_int;
- if (!tb[DCB_ATTR_BCN])
- return -EINVAL;
- if (!netdev->dcbnl_ops->setbcncfg ||
- !netdev->dcbnl_ops->setbcnrp)
- return -EOPNOTSUPP;
- ret = nla_parse_nested_deprecated(data, DCB_BCN_ATTR_MAX,
- tb[DCB_ATTR_BCN], dcbnl_pfc_up_nest,
- NULL);
- if (ret)
- return ret;
- 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);
- }
- for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
- if (data[i] == NULL)
- continue;
- value_int = nla_get_u32(data[i]);
- netdev->dcbnl_ops->setbcncfg(netdev,
- i, value_int);
- }
- return nla_put_u8(skb, DCB_ATTR_BCN, 0);
- }
- static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb,
- int app_nested_type, int app_info_type,
- int app_entry_type)
- {
- struct dcb_peer_app_info info;
- struct dcb_app *table = NULL;
- const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
- u16 app_count;
- int err;
- /**
- * retrieve the peer app configuration form the driver. If the driver
- * handlers fail exit without doing anything
- */
- err = ops->peer_getappinfo(netdev, &info, &app_count);
- if (!err && app_count) {
- table = kmalloc_array(app_count, sizeof(struct dcb_app),
- GFP_KERNEL);
- if (!table)
- return -ENOMEM;
- err = ops->peer_getapptable(netdev, table);
- }
- if (!err) {
- u16 i;
- struct nlattr *app;
- /**
- * build the message, from here on the only possible failure
- * is due to the skb size
- */
- err = -EMSGSIZE;
- app = nla_nest_start_noflag(skb, app_nested_type);
- if (!app)
- goto nla_put_failure;
- if (app_info_type &&
- nla_put(skb, app_info_type, sizeof(info), &info))
- goto nla_put_failure;
- for (i = 0; i < app_count; i++) {
- if (nla_put(skb, app_entry_type, sizeof(struct dcb_app),
- &table[i]))
- goto nla_put_failure;
- }
- nla_nest_end(skb, app);
- }
- err = 0;
- nla_put_failure:
- kfree(table);
- return err;
- }
- /* Handle IEEE 802.1Qaz/802.1Qau/802.1Qbb GET commands. */
- static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
- {
- struct nlattr *ieee, *app;
- struct dcb_app_type *itr;
- const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
- int dcbx;
- int err;
- if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name))
- return -EMSGSIZE;
- ieee = nla_nest_start_noflag(skb, DCB_ATTR_IEEE);
- if (!ieee)
- return -EMSGSIZE;
- if (ops->ieee_getets) {
- struct ieee_ets ets;
- memset(&ets, 0, sizeof(ets));
- err = ops->ieee_getets(netdev, &ets);
- if (!err &&
- nla_put(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets))
- return -EMSGSIZE;
- }
- if (ops->ieee_getmaxrate) {
- struct ieee_maxrate maxrate;
- memset(&maxrate, 0, sizeof(maxrate));
- err = ops->ieee_getmaxrate(netdev, &maxrate);
- if (!err) {
- err = nla_put(skb, DCB_ATTR_IEEE_MAXRATE,
- sizeof(maxrate), &maxrate);
- if (err)
- return -EMSGSIZE;
- }
- }
- if (ops->ieee_getqcn) {
- struct ieee_qcn qcn;
- memset(&qcn, 0, sizeof(qcn));
- err = ops->ieee_getqcn(netdev, &qcn);
- if (!err) {
- err = nla_put(skb, DCB_ATTR_IEEE_QCN,
- sizeof(qcn), &qcn);
- if (err)
- return -EMSGSIZE;
- }
- }
- if (ops->ieee_getqcnstats) {
- struct ieee_qcn_stats qcn_stats;
- memset(&qcn_stats, 0, sizeof(qcn_stats));
- err = ops->ieee_getqcnstats(netdev, &qcn_stats);
- if (!err) {
- err = nla_put(skb, DCB_ATTR_IEEE_QCN_STATS,
- sizeof(qcn_stats), &qcn_stats);
- if (err)
- return -EMSGSIZE;
- }
- }
- if (ops->ieee_getpfc) {
- struct ieee_pfc pfc;
- memset(&pfc, 0, sizeof(pfc));
- err = ops->ieee_getpfc(netdev, &pfc);
- if (!err &&
- nla_put(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc))
- return -EMSGSIZE;
- }
- if (ops->dcbnl_getbuffer) {
- struct dcbnl_buffer buffer;
- memset(&buffer, 0, sizeof(buffer));
- err = ops->dcbnl_getbuffer(netdev, &buffer);
- if (!err &&
- nla_put(skb, DCB_ATTR_DCB_BUFFER, sizeof(buffer), &buffer))
- return -EMSGSIZE;
- }
- app = nla_nest_start_noflag(skb, DCB_ATTR_IEEE_APP_TABLE);
- if (!app)
- return -EMSGSIZE;
- spin_lock_bh(&dcb_lock);
- list_for_each_entry(itr, &dcb_app_list, list) {
- if (itr->ifindex == netdev->ifindex) {
- err = nla_put(skb, DCB_ATTR_IEEE_APP, sizeof(itr->app),
- &itr->app);
- if (err) {
- spin_unlock_bh(&dcb_lock);
- return -EMSGSIZE;
- }
- }
- }
- if (netdev->dcbnl_ops->getdcbx)
- dcbx = netdev->dcbnl_ops->getdcbx(netdev);
- else
- dcbx = -EOPNOTSUPP;
- spin_unlock_bh(&dcb_lock);
- nla_nest_end(skb, app);
- /* get peer info if available */
- if (ops->ieee_peer_getets) {
- struct ieee_ets ets;
- memset(&ets, 0, sizeof(ets));
- err = ops->ieee_peer_getets(netdev, &ets);
- if (!err &&
- nla_put(skb, DCB_ATTR_IEEE_PEER_ETS, sizeof(ets), &ets))
- return -EMSGSIZE;
- }
- if (ops->ieee_peer_getpfc) {
- struct ieee_pfc pfc;
- memset(&pfc, 0, sizeof(pfc));
- err = ops->ieee_peer_getpfc(netdev, &pfc);
- if (!err &&
- nla_put(skb, DCB_ATTR_IEEE_PEER_PFC, sizeof(pfc), &pfc))
- return -EMSGSIZE;
- }
- if (ops->peer_getappinfo && ops->peer_getapptable) {
- err = dcbnl_build_peer_app(netdev, skb,
- DCB_ATTR_IEEE_PEER_APP,
- DCB_ATTR_IEEE_APP_UNSPEC,
- DCB_ATTR_IEEE_APP);
- if (err)
- return -EMSGSIZE;
- }
- nla_nest_end(skb, ieee);
- if (dcbx >= 0) {
- err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
- if (err)
- return -EMSGSIZE;
- }
- return 0;
- }
- static int dcbnl_cee_pg_fill(struct sk_buff *skb, struct net_device *dev,
- int dir)
- {
- u8 pgid, up_map, prio, tc_pct;
- const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops;
- int i = dir ? DCB_ATTR_CEE_TX_PG : DCB_ATTR_CEE_RX_PG;
- struct nlattr *pg = nla_nest_start_noflag(skb, i);
- if (!pg)
- return -EMSGSIZE;
- for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
- struct nlattr *tc_nest = nla_nest_start_noflag(skb, i);
- if (!tc_nest)
- return -EMSGSIZE;
- pgid = DCB_ATTR_VALUE_UNDEFINED;
- prio = DCB_ATTR_VALUE_UNDEFINED;
- tc_pct = DCB_ATTR_VALUE_UNDEFINED;
- up_map = DCB_ATTR_VALUE_UNDEFINED;
- if (!dir)
- ops->getpgtccfgrx(dev, i - DCB_PG_ATTR_TC_0,
- &prio, &pgid, &tc_pct, &up_map);
- else
- ops->getpgtccfgtx(dev, i - DCB_PG_ATTR_TC_0,
- &prio, &pgid, &tc_pct, &up_map);
- if (nla_put_u8(skb, DCB_TC_ATTR_PARAM_PGID, pgid) ||
- nla_put_u8(skb, DCB_TC_ATTR_PARAM_UP_MAPPING, up_map) ||
- nla_put_u8(skb, DCB_TC_ATTR_PARAM_STRICT_PRIO, prio) ||
- nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT, tc_pct))
- return -EMSGSIZE;
- nla_nest_end(skb, tc_nest);
- }
- for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
- tc_pct = DCB_ATTR_VALUE_UNDEFINED;
- if (!dir)
- ops->getpgbwgcfgrx(dev, i - DCB_PG_ATTR_BW_ID_0,
- &tc_pct);
- else
- ops->getpgbwgcfgtx(dev, i - DCB_PG_ATTR_BW_ID_0,
- &tc_pct);
- if (nla_put_u8(skb, i, tc_pct))
- return -EMSGSIZE;
- }
- nla_nest_end(skb, pg);
- return 0;
- }
- static int dcbnl_cee_fill(struct sk_buff *skb, struct net_device *netdev)
- {
- struct nlattr *cee, *app;
- struct dcb_app_type *itr;
- const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
- int dcbx, i, err = -EMSGSIZE;
- u8 value;
- if (nla_put_string(skb, DCB_ATTR_IFNAME, netdev->name))
- goto nla_put_failure;
- cee = nla_nest_start_noflag(skb, DCB_ATTR_CEE);
- if (!cee)
- goto nla_put_failure;
- /* local pg */
- if (ops->getpgtccfgtx && ops->getpgbwgcfgtx) {
- err = dcbnl_cee_pg_fill(skb, netdev, 1);
- if (err)
- goto nla_put_failure;
- }
- if (ops->getpgtccfgrx && ops->getpgbwgcfgrx) {
- err = dcbnl_cee_pg_fill(skb, netdev, 0);
- if (err)
- goto nla_put_failure;
- }
- /* local pfc */
- if (ops->getpfccfg) {
- struct nlattr *pfc_nest = nla_nest_start_noflag(skb,
- DCB_ATTR_CEE_PFC);
- if (!pfc_nest)
- goto nla_put_failure;
- for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
- ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, &value);
- if (nla_put_u8(skb, i, value))
- goto nla_put_failure;
- }
- nla_nest_end(skb, pfc_nest);
- }
- /* local app */
- spin_lock_bh(&dcb_lock);
- app = nla_nest_start_noflag(skb, DCB_ATTR_CEE_APP_TABLE);
- if (!app)
- goto dcb_unlock;
- list_for_each_entry(itr, &dcb_app_list, list) {
- if (itr->ifindex == netdev->ifindex) {
- struct nlattr *app_nest = nla_nest_start_noflag(skb,
- DCB_ATTR_APP);
- if (!app_nest)
- goto dcb_unlock;
- err = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE,
- itr->app.selector);
- if (err)
- goto dcb_unlock;
- err = nla_put_u16(skb, DCB_APP_ATTR_ID,
- itr->app.protocol);
- if (err)
- goto dcb_unlock;
- err = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY,
- itr->app.priority);
- if (err)
- goto dcb_unlock;
- nla_nest_end(skb, app_nest);
- }
- }
- nla_nest_end(skb, app);
- if (netdev->dcbnl_ops->getdcbx)
- dcbx = netdev->dcbnl_ops->getdcbx(netdev);
- else
- dcbx = -EOPNOTSUPP;
- spin_unlock_bh(&dcb_lock);
- /* features flags */
- if (ops->getfeatcfg) {
- struct nlattr *feat = nla_nest_start_noflag(skb,
- DCB_ATTR_CEE_FEAT);
- if (!feat)
- goto nla_put_failure;
- for (i = DCB_FEATCFG_ATTR_ALL + 1; i <= DCB_FEATCFG_ATTR_MAX;
- i++)
- if (!ops->getfeatcfg(netdev, i, &value) &&
- nla_put_u8(skb, i, value))
- goto nla_put_failure;
- nla_nest_end(skb, feat);
- }
- /* peer info if available */
- if (ops->cee_peer_getpg) {
- struct cee_pg pg;
- memset(&pg, 0, sizeof(pg));
- err = ops->cee_peer_getpg(netdev, &pg);
- if (!err &&
- nla_put(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg))
- goto nla_put_failure;
- }
- if (ops->cee_peer_getpfc) {
- struct cee_pfc pfc;
- memset(&pfc, 0, sizeof(pfc));
- err = ops->cee_peer_getpfc(netdev, &pfc);
- if (!err &&
- nla_put(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc))
- goto nla_put_failure;
- }
- if (ops->peer_getappinfo && ops->peer_getapptable) {
- err = dcbnl_build_peer_app(netdev, skb,
- DCB_ATTR_CEE_PEER_APP_TABLE,
- DCB_ATTR_CEE_PEER_APP_INFO,
- DCB_ATTR_CEE_PEER_APP);
- if (err)
- goto nla_put_failure;
- }
- nla_nest_end(skb, cee);
- /* DCBX state */
- if (dcbx >= 0) {
- err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
- if (err)
- goto nla_put_failure;
- }
- return 0;
- dcb_unlock:
- spin_unlock_bh(&dcb_lock);
- nla_put_failure:
- err = -EMSGSIZE;
- return err;
- }
- static int dcbnl_notify(struct net_device *dev, int event, int cmd,
- u32 seq, u32 portid, int dcbx_ver)
- {
- struct net *net = dev_net(dev);
- struct sk_buff *skb;
- struct nlmsghdr *nlh;
- const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops;
- int err;
- if (!ops)
- return -EOPNOTSUPP;
- skb = dcbnl_newmsg(event, cmd, portid, seq, 0, &nlh);
- if (!skb)
- return -ENOBUFS;
- if (dcbx_ver == DCB_CAP_DCBX_VER_IEEE)
- err = dcbnl_ieee_fill(skb, dev);
- else
- err = dcbnl_cee_fill(skb, dev);
- if (err < 0) {
- /* Report error to broadcast listeners */
- nlmsg_free(skb);
- rtnl_set_sk_err(net, RTNLGRP_DCB, err);
- } else {
- /* End nlmsg and notify broadcast listeners */
- nlmsg_end(skb, nlh);
- rtnl_notify(skb, net, 0, RTNLGRP_DCB, NULL, GFP_KERNEL);
- }
- return err;
- }
- int dcbnl_ieee_notify(struct net_device *dev, int event, int cmd,
- u32 seq, u32 portid)
- {
- return dcbnl_notify(dev, event, cmd, seq, portid, DCB_CAP_DCBX_VER_IEEE);
- }
- EXPORT_SYMBOL(dcbnl_ieee_notify);
- int dcbnl_cee_notify(struct net_device *dev, int event, int cmd,
- u32 seq, u32 portid)
- {
- return dcbnl_notify(dev, event, cmd, seq, portid, DCB_CAP_DCBX_VER_CEE);
- }
- EXPORT_SYMBOL(dcbnl_cee_notify);
- /* Handle IEEE 802.1Qaz/802.1Qau/802.1Qbb SET commands.
- * If any requested operation can not be completed
- * the entire msg is aborted and error value is returned.
- * No attempt is made to reconcile the case where only part of the
- * cmd can be completed.
- */
- static int dcbnl_ieee_set(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
- struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
- int err;
- if (!ops)
- return -EOPNOTSUPP;
- if (!tb[DCB_ATTR_IEEE])
- return -EINVAL;
- err = nla_parse_nested_deprecated(ieee, DCB_ATTR_IEEE_MAX,
- tb[DCB_ATTR_IEEE],
- dcbnl_ieee_policy, NULL);
- if (err)
- return err;
- if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) {
- struct ieee_ets *ets = nla_data(ieee[DCB_ATTR_IEEE_ETS]);
- err = ops->ieee_setets(netdev, ets);
- if (err)
- goto err;
- }
- if (ieee[DCB_ATTR_IEEE_MAXRATE] && ops->ieee_setmaxrate) {
- struct ieee_maxrate *maxrate =
- nla_data(ieee[DCB_ATTR_IEEE_MAXRATE]);
- err = ops->ieee_setmaxrate(netdev, maxrate);
- if (err)
- goto err;
- }
- if (ieee[DCB_ATTR_IEEE_QCN] && ops->ieee_setqcn) {
- struct ieee_qcn *qcn =
- nla_data(ieee[DCB_ATTR_IEEE_QCN]);
- err = ops->ieee_setqcn(netdev, qcn);
- if (err)
- goto err;
- }
- if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setpfc) {
- struct ieee_pfc *pfc = nla_data(ieee[DCB_ATTR_IEEE_PFC]);
- err = ops->ieee_setpfc(netdev, pfc);
- if (err)
- goto err;
- }
- if (ieee[DCB_ATTR_DCB_BUFFER] && ops->dcbnl_setbuffer) {
- struct dcbnl_buffer *buffer =
- nla_data(ieee[DCB_ATTR_DCB_BUFFER]);
- err = ops->dcbnl_setbuffer(netdev, buffer);
- if (err)
- goto err;
- }
- if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
- struct nlattr *attr;
- int rem;
- nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
- struct dcb_app *app_data;
- if (nla_type(attr) != DCB_ATTR_IEEE_APP)
- continue;
- if (nla_len(attr) < sizeof(struct dcb_app)) {
- err = -ERANGE;
- goto err;
- }
- app_data = nla_data(attr);
- if (ops->ieee_setapp)
- err = ops->ieee_setapp(netdev, app_data);
- else
- err = dcb_ieee_setapp(netdev, app_data);
- if (err)
- goto err;
- }
- }
- err:
- err = nla_put_u8(skb, DCB_ATTR_IEEE, err);
- dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_SET, seq, 0);
- return err;
- }
- static int dcbnl_ieee_get(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
- if (!ops)
- return -EOPNOTSUPP;
- return dcbnl_ieee_fill(skb, netdev);
- }
- static int dcbnl_ieee_del(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
- struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
- int err;
- if (!ops)
- return -EOPNOTSUPP;
- if (!tb[DCB_ATTR_IEEE])
- return -EINVAL;
- err = nla_parse_nested_deprecated(ieee, DCB_ATTR_IEEE_MAX,
- tb[DCB_ATTR_IEEE],
- dcbnl_ieee_policy, NULL);
- if (err)
- return err;
- if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
- struct nlattr *attr;
- int rem;
- nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
- struct dcb_app *app_data;
- if (nla_type(attr) != DCB_ATTR_IEEE_APP)
- continue;
- app_data = nla_data(attr);
- if (ops->ieee_delapp)
- err = ops->ieee_delapp(netdev, app_data);
- else
- err = dcb_ieee_delapp(netdev, app_data);
- if (err)
- goto err;
- }
- }
- err:
- err = nla_put_u8(skb, DCB_ATTR_IEEE, err);
- dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_DEL, seq, 0);
- return err;
- }
- /* DCBX configuration */
- static int dcbnl_getdcbx(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- if (!netdev->dcbnl_ops->getdcbx)
- return -EOPNOTSUPP;
- return nla_put_u8(skb, DCB_ATTR_DCBX,
- netdev->dcbnl_ops->getdcbx(netdev));
- }
- static int dcbnl_setdcbx(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- u8 value;
- if (!netdev->dcbnl_ops->setdcbx)
- return -EOPNOTSUPP;
- if (!tb[DCB_ATTR_DCBX])
- return -EINVAL;
- value = nla_get_u8(tb[DCB_ATTR_DCBX]);
- return nla_put_u8(skb, DCB_ATTR_DCBX,
- netdev->dcbnl_ops->setdcbx(netdev, value));
- }
- static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest;
- u8 value;
- int ret, i;
- int getall = 0;
- if (!netdev->dcbnl_ops->getfeatcfg)
- return -EOPNOTSUPP;
- if (!tb[DCB_ATTR_FEATCFG])
- return -EINVAL;
- ret = nla_parse_nested_deprecated(data, DCB_FEATCFG_ATTR_MAX,
- tb[DCB_ATTR_FEATCFG],
- dcbnl_featcfg_nest, NULL);
- if (ret)
- return ret;
- nest = nla_nest_start_noflag(skb, DCB_ATTR_FEATCFG);
- if (!nest)
- return -EMSGSIZE;
- if (data[DCB_FEATCFG_ATTR_ALL])
- getall = 1;
- for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
- if (!getall && !data[i])
- continue;
- ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value);
- if (!ret)
- ret = nla_put_u8(skb, i, value);
- if (ret) {
- nla_nest_cancel(skb, nest);
- goto nla_put_failure;
- }
- }
- nla_nest_end(skb, nest);
- nla_put_failure:
- return ret;
- }
- static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1];
- int ret, i;
- u8 value;
- if (!netdev->dcbnl_ops->setfeatcfg)
- return -ENOTSUPP;
- if (!tb[DCB_ATTR_FEATCFG])
- return -EINVAL;
- ret = nla_parse_nested_deprecated(data, DCB_FEATCFG_ATTR_MAX,
- tb[DCB_ATTR_FEATCFG],
- dcbnl_featcfg_nest, NULL);
- if (ret)
- goto err;
- for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
- if (data[i] == NULL)
- continue;
- value = nla_get_u8(data[i]);
- ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value);
- if (ret)
- goto err;
- }
- err:
- ret = nla_put_u8(skb, DCB_ATTR_FEATCFG, ret);
- return ret;
- }
- /* Handle CEE DCBX GET commands. */
- static int dcbnl_cee_get(struct net_device *netdev, struct nlmsghdr *nlh,
- u32 seq, struct nlattr **tb, struct sk_buff *skb)
- {
- const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
- if (!ops)
- return -EOPNOTSUPP;
- return dcbnl_cee_fill(skb, netdev);
- }
- struct reply_func {
- /* reply netlink message type */
- int type;
- /* function to fill message contents */
- int (*cb)(struct net_device *, struct nlmsghdr *, u32,
- struct nlattr **, struct sk_buff *);
- };
- static const struct reply_func reply_funcs[DCB_CMD_MAX+1] = {
- [DCB_CMD_GSTATE] = { RTM_GETDCB, dcbnl_getstate },
- [DCB_CMD_SSTATE] = { RTM_SETDCB, dcbnl_setstate },
- [DCB_CMD_PFC_GCFG] = { RTM_GETDCB, dcbnl_getpfccfg },
- [DCB_CMD_PFC_SCFG] = { RTM_SETDCB, dcbnl_setpfccfg },
- [DCB_CMD_GPERM_HWADDR] = { RTM_GETDCB, dcbnl_getperm_hwaddr },
- [DCB_CMD_GCAP] = { RTM_GETDCB, dcbnl_getcap },
- [DCB_CMD_GNUMTCS] = { RTM_GETDCB, dcbnl_getnumtcs },
- [DCB_CMD_SNUMTCS] = { RTM_SETDCB, dcbnl_setnumtcs },
- [DCB_CMD_PFC_GSTATE] = { RTM_GETDCB, dcbnl_getpfcstate },
- [DCB_CMD_PFC_SSTATE] = { RTM_SETDCB, dcbnl_setpfcstate },
- [DCB_CMD_GAPP] = { RTM_GETDCB, dcbnl_getapp },
- [DCB_CMD_SAPP] = { RTM_SETDCB, dcbnl_setapp },
- [DCB_CMD_PGTX_GCFG] = { RTM_GETDCB, dcbnl_pgtx_getcfg },
- [DCB_CMD_PGTX_SCFG] = { RTM_SETDCB, dcbnl_pgtx_setcfg },
- [DCB_CMD_PGRX_GCFG] = { RTM_GETDCB, dcbnl_pgrx_getcfg },
- [DCB_CMD_PGRX_SCFG] = { RTM_SETDCB, dcbnl_pgrx_setcfg },
- [DCB_CMD_SET_ALL] = { RTM_SETDCB, dcbnl_setall },
- [DCB_CMD_BCN_GCFG] = { RTM_GETDCB, dcbnl_bcn_getcfg },
- [DCB_CMD_BCN_SCFG] = { RTM_SETDCB, dcbnl_bcn_setcfg },
- [DCB_CMD_IEEE_GET] = { RTM_GETDCB, dcbnl_ieee_get },
- [DCB_CMD_IEEE_SET] = { RTM_SETDCB, dcbnl_ieee_set },
- [DCB_CMD_IEEE_DEL] = { RTM_SETDCB, dcbnl_ieee_del },
- [DCB_CMD_GDCBX] = { RTM_GETDCB, dcbnl_getdcbx },
- [DCB_CMD_SDCBX] = { RTM_SETDCB, dcbnl_setdcbx },
- [DCB_CMD_GFEATCFG] = { RTM_GETDCB, dcbnl_getfeatcfg },
- [DCB_CMD_SFEATCFG] = { RTM_SETDCB, dcbnl_setfeatcfg },
- [DCB_CMD_CEE_GET] = { RTM_GETDCB, dcbnl_cee_get },
- };
- static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct netlink_ext_ack *extack)
- {
- struct net *net = sock_net(skb->sk);
- struct net_device *netdev;
- struct dcbmsg *dcb = nlmsg_data(nlh);
- struct nlattr *tb[DCB_ATTR_MAX + 1];
- u32 portid = skb ? NETLINK_CB(skb).portid : 0;
- int ret = -EINVAL;
- struct sk_buff *reply_skb;
- struct nlmsghdr *reply_nlh = NULL;
- const struct reply_func *fn;
- if ((nlh->nlmsg_type == RTM_SETDCB) && !netlink_capable(skb, CAP_NET_ADMIN))
- return -EPERM;
- ret = nlmsg_parse_deprecated(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX,
- dcbnl_rtnl_policy, extack);
- if (ret < 0)
- return ret;
- if (dcb->cmd > DCB_CMD_MAX)
- return -EINVAL;
- /* check if a reply function has been defined for the command */
- fn = &reply_funcs[dcb->cmd];
- if (!fn->cb)
- return -EOPNOTSUPP;
- if (!tb[DCB_ATTR_IFNAME])
- return -EINVAL;
- netdev = __dev_get_by_name(net, nla_data(tb[DCB_ATTR_IFNAME]));
- if (!netdev)
- return -ENODEV;
- if (!netdev->dcbnl_ops)
- return -EOPNOTSUPP;
- reply_skb = dcbnl_newmsg(fn->type, dcb->cmd, portid, nlh->nlmsg_seq,
- nlh->nlmsg_flags, &reply_nlh);
- if (!reply_skb)
- return -ENOBUFS;
- ret = fn->cb(netdev, nlh, nlh->nlmsg_seq, tb, reply_skb);
- if (ret < 0) {
- nlmsg_free(reply_skb);
- goto out;
- }
- nlmsg_end(reply_skb, reply_nlh);
- ret = rtnl_unicast(reply_skb, net, portid);
- out:
- return ret;
- }
- static struct dcb_app_type *dcb_app_lookup(const struct dcb_app *app,
- int ifindex, int prio)
- {
- struct dcb_app_type *itr;
- list_for_each_entry(itr, &dcb_app_list, list) {
- if (itr->app.selector == app->selector &&
- itr->app.protocol == app->protocol &&
- itr->ifindex == ifindex &&
- ((prio == -1) || itr->app.priority == prio))
- return itr;
- }
- return NULL;
- }
- static int dcb_app_add(const struct dcb_app *app, int ifindex)
- {
- struct dcb_app_type *entry;
- entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
- if (!entry)
- return -ENOMEM;
- memcpy(&entry->app, app, sizeof(*app));
- entry->ifindex = ifindex;
- list_add(&entry->list, &dcb_app_list);
- return 0;
- }
- /**
- * dcb_getapp - retrieve the DCBX application user priority
- *
- * On success returns a non-zero 802.1p user priority bitmap
- * otherwise returns 0 as the invalid user priority bitmap to
- * indicate an error.
- */
- u8 dcb_getapp(struct net_device *dev, struct dcb_app *app)
- {
- struct dcb_app_type *itr;
- u8 prio = 0;
- spin_lock_bh(&dcb_lock);
- itr = dcb_app_lookup(app, dev->ifindex, -1);
- if (itr)
- prio = itr->app.priority;
- spin_unlock_bh(&dcb_lock);
- return prio;
- }
- EXPORT_SYMBOL(dcb_getapp);
- /**
- * dcb_setapp - add CEE dcb application data to app list
- *
- * Priority 0 is an invalid priority in CEE spec. This routine
- * removes applications from the app list if the priority is
- * set to zero. Priority is expected to be 8-bit 802.1p user priority bitmap
- */
- int dcb_setapp(struct net_device *dev, struct dcb_app *new)
- {
- struct dcb_app_type *itr;
- struct dcb_app_type event;
- int err = 0;
- event.ifindex = dev->ifindex;
- memcpy(&event.app, new, sizeof(event.app));
- if (dev->dcbnl_ops->getdcbx)
- event.dcbx = dev->dcbnl_ops->getdcbx(dev);
- spin_lock_bh(&dcb_lock);
- /* Search for existing match and replace */
- itr = dcb_app_lookup(new, dev->ifindex, -1);
- if (itr) {
- if (new->priority)
- itr->app.priority = new->priority;
- else {
- list_del(&itr->list);
- kfree(itr);
- }
- goto out;
- }
- /* App type does not exist add new application type */
- if (new->priority)
- err = dcb_app_add(new, dev->ifindex);
- out:
- spin_unlock_bh(&dcb_lock);
- if (!err)
- call_dcbevent_notifiers(DCB_APP_EVENT, &event);
- return err;
- }
- EXPORT_SYMBOL(dcb_setapp);
- /**
- * dcb_ieee_getapp_mask - retrieve the IEEE DCB application priority
- *
- * Helper routine which on success returns a non-zero 802.1Qaz user
- * priority bitmap otherwise returns 0 to indicate the dcb_app was
- * not found in APP list.
- */
- u8 dcb_ieee_getapp_mask(struct net_device *dev, struct dcb_app *app)
- {
- struct dcb_app_type *itr;
- u8 prio = 0;
- spin_lock_bh(&dcb_lock);
- itr = dcb_app_lookup(app, dev->ifindex, -1);
- if (itr)
- prio |= 1 << itr->app.priority;
- spin_unlock_bh(&dcb_lock);
- return prio;
- }
- EXPORT_SYMBOL(dcb_ieee_getapp_mask);
- /**
- * dcb_ieee_setapp - add IEEE dcb application data to app list
- *
- * This adds Application data to the list. Multiple application
- * entries may exists for the same selector and protocol as long
- * as the priorities are different. Priority is expected to be a
- * 3-bit unsigned integer
- */
- int dcb_ieee_setapp(struct net_device *dev, struct dcb_app *new)
- {
- struct dcb_app_type event;
- int err = 0;
- event.ifindex = dev->ifindex;
- memcpy(&event.app, new, sizeof(event.app));
- if (dev->dcbnl_ops->getdcbx)
- event.dcbx = dev->dcbnl_ops->getdcbx(dev);
- spin_lock_bh(&dcb_lock);
- /* Search for existing match and abort if found */
- if (dcb_app_lookup(new, dev->ifindex, new->priority)) {
- err = -EEXIST;
- goto out;
- }
- err = dcb_app_add(new, dev->ifindex);
- out:
- spin_unlock_bh(&dcb_lock);
- if (!err)
- call_dcbevent_notifiers(DCB_APP_EVENT, &event);
- return err;
- }
- EXPORT_SYMBOL(dcb_ieee_setapp);
- /**
- * dcb_ieee_delapp - delete IEEE dcb application data from list
- *
- * This removes a matching APP data from the APP list
- */
- int dcb_ieee_delapp(struct net_device *dev, struct dcb_app *del)
- {
- struct dcb_app_type *itr;
- struct dcb_app_type event;
- int err = -ENOENT;
- event.ifindex = dev->ifindex;
- memcpy(&event.app, del, sizeof(event.app));
- if (dev->dcbnl_ops->getdcbx)
- event.dcbx = dev->dcbnl_ops->getdcbx(dev);
- spin_lock_bh(&dcb_lock);
- /* Search for existing match and remove it. */
- if ((itr = dcb_app_lookup(del, dev->ifindex, del->priority))) {
- list_del(&itr->list);
- kfree(itr);
- err = 0;
- }
- spin_unlock_bh(&dcb_lock);
- if (!err)
- call_dcbevent_notifiers(DCB_APP_EVENT, &event);
- return err;
- }
- EXPORT_SYMBOL(dcb_ieee_delapp);
- /**
- * dcb_ieee_getapp_prio_dscp_mask_map - For a given device, find mapping from
- * priorities to the DSCP values assigned to that priority. Initialize p_map
- * such that each map element holds a bit mask of DSCP values configured for
- * that priority by APP entries.
- */
- void dcb_ieee_getapp_prio_dscp_mask_map(const struct net_device *dev,
- struct dcb_ieee_app_prio_map *p_map)
- {
- int ifindex = dev->ifindex;
- struct dcb_app_type *itr;
- u8 prio;
- memset(p_map->map, 0, sizeof(p_map->map));
- spin_lock_bh(&dcb_lock);
- list_for_each_entry(itr, &dcb_app_list, list) {
- if (itr->ifindex == ifindex &&
- itr->app.selector == IEEE_8021QAZ_APP_SEL_DSCP &&
- itr->app.protocol < 64 &&
- itr->app.priority < IEEE_8021QAZ_MAX_TCS) {
- prio = itr->app.priority;
- p_map->map[prio] |= 1ULL << itr->app.protocol;
- }
- }
- spin_unlock_bh(&dcb_lock);
- }
- EXPORT_SYMBOL(dcb_ieee_getapp_prio_dscp_mask_map);
- /**
- * dcb_ieee_getapp_dscp_prio_mask_map - For a given device, find mapping from
- * DSCP values to the priorities assigned to that DSCP value. Initialize p_map
- * such that each map element holds a bit mask of priorities configured for a
- * given DSCP value by APP entries.
- */
- void
- dcb_ieee_getapp_dscp_prio_mask_map(const struct net_device *dev,
- struct dcb_ieee_app_dscp_map *p_map)
- {
- int ifindex = dev->ifindex;
- struct dcb_app_type *itr;
- memset(p_map->map, 0, sizeof(p_map->map));
- spin_lock_bh(&dcb_lock);
- list_for_each_entry(itr, &dcb_app_list, list) {
- if (itr->ifindex == ifindex &&
- itr->app.selector == IEEE_8021QAZ_APP_SEL_DSCP &&
- itr->app.protocol < 64 &&
- itr->app.priority < IEEE_8021QAZ_MAX_TCS)
- p_map->map[itr->app.protocol] |= 1 << itr->app.priority;
- }
- spin_unlock_bh(&dcb_lock);
- }
- EXPORT_SYMBOL(dcb_ieee_getapp_dscp_prio_mask_map);
- /**
- * Per 802.1Q-2014, the selector value of 1 is used for matching on Ethernet
- * type, with valid PID values >= 1536. A special meaning is then assigned to
- * protocol value of 0: "default priority. For use when priority is not
- * otherwise specified".
- *
- * dcb_ieee_getapp_default_prio_mask - For a given device, find all APP entries
- * of the form {$PRIO, ETHERTYPE, 0} and construct a bit mask of all default
- * priorities set by these entries.
- */
- u8 dcb_ieee_getapp_default_prio_mask(const struct net_device *dev)
- {
- int ifindex = dev->ifindex;
- struct dcb_app_type *itr;
- u8 mask = 0;
- spin_lock_bh(&dcb_lock);
- list_for_each_entry(itr, &dcb_app_list, list) {
- if (itr->ifindex == ifindex &&
- itr->app.selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
- itr->app.protocol == 0 &&
- itr->app.priority < IEEE_8021QAZ_MAX_TCS)
- mask |= 1 << itr->app.priority;
- }
- spin_unlock_bh(&dcb_lock);
- return mask;
- }
- EXPORT_SYMBOL(dcb_ieee_getapp_default_prio_mask);
- static int __init dcbnl_init(void)
- {
- INIT_LIST_HEAD(&dcb_app_list);
- rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL, 0);
- rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL, 0);
- return 0;
- }
- device_initcall(dcbnl_init);