| // 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_ATTR_DCB_APP_TRUST_TABLE] = {.type = NLA_NESTED}, |
| }; |
| |
| /* 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 enum ieee_attrs_app dcbnl_app_attr_type_get(u8 selector) |
| { |
| switch (selector) { |
| case IEEE_8021QAZ_APP_SEL_ETHERTYPE: |
| case IEEE_8021QAZ_APP_SEL_STREAM: |
| case IEEE_8021QAZ_APP_SEL_DGRAM: |
| case IEEE_8021QAZ_APP_SEL_ANY: |
| case IEEE_8021QAZ_APP_SEL_DSCP: |
| return DCB_ATTR_IEEE_APP; |
| case DCB_APP_SEL_PCP: |
| return DCB_ATTR_DCB_APP; |
| default: |
| return DCB_ATTR_IEEE_APP_UNSPEC; |
| } |
| } |
| |
| static bool dcbnl_app_attr_type_validate(enum ieee_attrs_app type) |
| { |
| switch (type) { |
| case DCB_ATTR_IEEE_APP: |
| case DCB_ATTR_DCB_APP: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| static bool dcbnl_app_selector_validate(enum ieee_attrs_app type, u8 selector) |
| { |
| return dcbnl_app_attr_type_get(selector) == type; |
| } |
| |
| 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; |
| } |
| |
| static int dcbnl_getapptrust(struct net_device *netdev, struct sk_buff *skb) |
| { |
| const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
| enum ieee_attrs_app type; |
| struct nlattr *apptrust; |
| int nselectors, err, i; |
| u8 *selectors; |
| |
| selectors = kzalloc(IEEE_8021QAZ_APP_SEL_MAX + 1, GFP_KERNEL); |
| if (!selectors) |
| return -ENOMEM; |
| |
| err = ops->dcbnl_getapptrust(netdev, selectors, &nselectors); |
| if (err) { |
| err = 0; |
| goto out; |
| } |
| |
| apptrust = nla_nest_start(skb, DCB_ATTR_DCB_APP_TRUST_TABLE); |
| if (!apptrust) { |
| err = -EMSGSIZE; |
| goto out; |
| } |
| |
| for (i = 0; i < nselectors; i++) { |
| type = dcbnl_app_attr_type_get(selectors[i]); |
| err = nla_put_u8(skb, type, selectors[i]); |
| if (err) { |
| nla_nest_cancel(skb, apptrust); |
| goto out; |
| } |
| } |
| nla_nest_end(skb, apptrust); |
| |
| out: |
| kfree(selectors); |
| 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) |
| { |
| const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops; |
| struct nlattr *ieee, *app; |
| struct dcb_app_type *itr; |
| 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) { |
| enum ieee_attrs_app type = |
| dcbnl_app_attr_type_get(itr->app.selector); |
| err = nla_put(skb, type, 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); |
| |
| if (ops->dcbnl_getapptrust) { |
| err = dcbnl_getapptrust(netdev, skb); |
| if (err) |
| return err; |
| } |
| |
| /* 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 -ENOMEM; |
| |
| 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 prio; |
| 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]); |
| |
| for (prio = 0; prio < ARRAY_SIZE(buffer->prio2buffer); prio++) { |
| if (buffer->prio2buffer[prio] >= DCBX_MAX_BUFFERS) { |
| err = -EINVAL; |
| goto err; |
| } |
| } |
| |
| 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) { |
| enum ieee_attrs_app type = nla_type(attr); |
| struct dcb_app *app_data; |
| |
| if (!dcbnl_app_attr_type_validate(type)) |
| continue; |
| |
| if (nla_len(attr) < sizeof(struct dcb_app)) { |
| err = -ERANGE; |
| goto err; |
| } |
| |
| app_data = nla_data(attr); |
| |
| if (!dcbnl_app_selector_validate(type, |
| app_data->selector)) { |
| err = -EINVAL; |
| goto err; |
| } |
| |
| if (ops->ieee_setapp) |
| err = ops->ieee_setapp(netdev, app_data); |
| else |
| err = dcb_ieee_setapp(netdev, app_data); |
| if (err) |
| goto err; |
| } |
| } |
| |
| if (ieee[DCB_ATTR_DCB_APP_TRUST_TABLE]) { |
| u8 selectors[IEEE_8021QAZ_APP_SEL_MAX + 1] = {0}; |
| struct nlattr *attr; |
| int nselectors = 0; |
| int rem; |
| |
| if (!ops->dcbnl_setapptrust) { |
| err = -EOPNOTSUPP; |
| goto err; |
| } |
| |
| nla_for_each_nested(attr, ieee[DCB_ATTR_DCB_APP_TRUST_TABLE], |
| rem) { |
| enum ieee_attrs_app type = nla_type(attr); |
| u8 selector; |
| int i; |
| |
| if (!dcbnl_app_attr_type_validate(type) || |
| nla_len(attr) != 1 || |
| nselectors >= sizeof(selectors)) { |
| err = -EINVAL; |
| goto err; |
| } |
| |
| selector = nla_get_u8(attr); |
| |
| if (!dcbnl_app_selector_validate(type, selector)) { |
| err = -EINVAL; |
| goto err; |
| } |
| |
| /* Duplicate selector ? */ |
| for (i = 0; i < nselectors; i++) { |
| if (selectors[i] == selector) { |
| err = -EINVAL; |
| goto err; |
| } |
| } |
| |
| selectors[nselectors++] = selector; |
| } |
| |
| err = ops->dcbnl_setapptrust(netdev, selectors, nselectors); |
| 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) { |
| enum ieee_attrs_app type = nla_type(attr); |
| struct dcb_app *app_data; |
| |
| if (!dcbnl_app_attr_type_validate(type)) |
| continue; |
| |
| app_data = nla_data(attr); |
| |
| if (!dcbnl_app_selector_validate(type, |
| app_data->selector)) { |
| err = -EINVAL; |
| goto err; |
| } |
| |
| 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 = NETLINK_CB(skb).portid; |
| 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 (fn->type == RTM_SETDCB && !netlink_capable(skb, CAP_NET_ADMIN)) |
| return -EPERM; |
| |
| 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 -ENOMEM; |
| |
| 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(struct list_head *list, 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, list); |
| |
| return 0; |
| } |
| |
| /** |
| * dcb_getapp - retrieve the DCBX application user priority |
| * @dev: network interface |
| * @app: application to get user priority of |
| * |
| * 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 |
| * @dev: network interface |
| * @new: application data to add |
| * |
| * 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(&dcb_app_list, 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 |
| * @dev: network interface |
| * @app: where to store the retrieve application data |
| * |
| * 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 |
| * @dev: network interface |
| * @new: application data to add |
| * |
| * 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(&dcb_app_list, 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 |
| * @dev: network interface |
| * @del: application data to delete |
| * |
| * 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 void dcbnl_flush_dev(struct net_device *dev) |
| { |
| struct dcb_app_type *itr, *tmp; |
| |
| spin_lock_bh(&dcb_lock); |
| |
| list_for_each_entry_safe(itr, tmp, &dcb_app_list, list) { |
| if (itr->ifindex == dev->ifindex) { |
| list_del(&itr->list); |
| kfree(itr); |
| } |
| } |
| |
| spin_unlock_bh(&dcb_lock); |
| } |
| |
| static int dcbnl_netdevice_event(struct notifier_block *nb, |
| unsigned long event, void *ptr) |
| { |
| struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
| |
| switch (event) { |
| case NETDEV_UNREGISTER: |
| if (!dev->dcbnl_ops) |
| return NOTIFY_DONE; |
| |
| dcbnl_flush_dev(dev); |
| |
| return NOTIFY_OK; |
| default: |
| return NOTIFY_DONE; |
| } |
| } |
| |
| static struct notifier_block dcbnl_nb __read_mostly = { |
| .notifier_call = dcbnl_netdevice_event, |
| }; |
| |
| static int __init dcbnl_init(void) |
| { |
| int err; |
| |
| err = register_netdevice_notifier(&dcbnl_nb); |
| if (err) |
| return err; |
| |
| 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); |