![Mathias Krause](/assets/img/avatar_default.png)
The dcb netlink interface leaks stack memory in various places: * perm_addr[] buffer is only filled at max with 12 of the 32 bytes but copied completely, * no in-kernel driver fills all fields of an IEEE 802.1Qaz subcommand, so we're leaking up to 58 bytes for ieee_ets structs, up to 136 bytes for ieee_pfc structs, etc., * the same is true for CEE -- no in-kernel driver fills the whole struct, Prevent all of the above stack info leaks by properly initializing the buffers/structures involved. Signed-off-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
1930 lines
48 KiB
C
1930 lines
48 KiB
C
/*
|
|
* Copyright (c) 2008-2011, Intel Corporation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with
|
|
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
|
|
* Place - Suite 330, Boston, MA 02111-1307 USA.
|
|
*
|
|
* Author: Lucy Liu <lucy.liu@intel.com>
|
|
*/
|
|
|
|
#include <linux/netdevice.h>
|
|
#include <linux/netlink.h>
|
|
#include <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/module.h>
|
|
#include <net/sock.h>
|
|
|
|
/* Data Center Bridging (DCB) is a collection of Ethernet enhancements
|
|
* intended to allow network traffic with differing requirements
|
|
* (highly reliable, no drops vs. best effort vs. low latency) to operate
|
|
* and co-exist on Ethernet. Current DCB features are:
|
|
*
|
|
* Enhanced Transmission Selection (aka Priority Grouping [PG]) - provides a
|
|
* framework for assigning bandwidth guarantees to traffic classes.
|
|
*
|
|
* Priority-based Flow Control (PFC) - provides a flow control mechanism which
|
|
* can work independently for each 802.1p priority.
|
|
*
|
|
* Congestion Notification - provides a mechanism for end-to-end congestion
|
|
* control for protocols which do not have built-in congestion management.
|
|
*
|
|
* More information about the emerging standards for these Ethernet features
|
|
* can be found at: http://www.ieee802.org/1/pages/dcbridges.html
|
|
*
|
|
* This file implements an rtnetlink interface to allow configuration of DCB
|
|
* features for capable devices.
|
|
*/
|
|
|
|
MODULE_AUTHOR("Lucy Liu, <lucy.liu@intel.com>");
|
|
MODULE_DESCRIPTION("Data Center Bridging netlink interface");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
/**************** 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)},
|
|
};
|
|
|
|
static const struct nla_policy dcbnl_ieee_app[DCB_ATTR_IEEE_APP_MAX + 1] = {
|
|
[DCB_ATTR_IEEE_APP] = {.len = sizeof(struct dcb_app)},
|
|
};
|
|
|
|
/* 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(data, DCB_PFC_UP_ATTR_MAX,
|
|
tb[DCB_ATTR_PFC_CFG],
|
|
dcbnl_pfc_up_nest);
|
|
if (ret)
|
|
return ret;
|
|
|
|
nest = nla_nest_start(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(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP],
|
|
dcbnl_cap_nest);
|
|
if (ret)
|
|
return ret;
|
|
|
|
nest = nla_nest_start(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(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
|
|
dcbnl_numtcs_nest);
|
|
if (ret)
|
|
return ret;
|
|
|
|
nest = nla_nest_start(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(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
|
|
dcbnl_numtcs_nest);
|
|
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(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
|
|
dcbnl_app_nest);
|
|
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) {
|
|
up = netdev->dcbnl_ops->getapp(netdev, idtype, id);
|
|
} else {
|
|
struct dcb_app app = {
|
|
.selector = idtype,
|
|
.protocol = id,
|
|
};
|
|
up = dcb_getapp(netdev, &app);
|
|
}
|
|
|
|
app_nest = nla_nest_start(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(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
|
|
dcbnl_app_nest);
|
|
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);
|
|
} 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(pg_tb, DCB_PG_ATTR_MAX,
|
|
tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
|
|
if (ret)
|
|
return ret;
|
|
|
|
pg_nest = nla_nest_start(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(param_tb, DCB_TC_ATTR_PARAM_MAX,
|
|
data, dcbnl_tc_param_nest);
|
|
if (ret)
|
|
goto err_pg;
|
|
|
|
param_nest = nla_nest_start(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(data, DCB_PFC_UP_ATTR_MAX,
|
|
tb[DCB_ATTR_PFC_CFG],
|
|
dcbnl_pfc_up_nest);
|
|
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(pg_tb, DCB_PG_ATTR_MAX,
|
|
tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
|
|
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(param_tb, DCB_TC_ATTR_PARAM_MAX,
|
|
pg_tb[i], dcbnl_tc_param_nest);
|
|
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(bcn_tb, DCB_BCN_ATTR_MAX,
|
|
tb[DCB_ATTR_BCN], dcbnl_bcn_nest);
|
|
if (ret)
|
|
return ret;
|
|
|
|
bcn_nest = nla_nest_start(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(data, DCB_BCN_ATTR_MAX,
|
|
tb[DCB_ATTR_BCN],
|
|
dcbnl_pfc_up_nest);
|
|
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(sizeof(struct dcb_app) * app_count, 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(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 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(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_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;
|
|
}
|
|
|
|
app = nla_nest_start(skb, DCB_ATTR_IEEE_APP_TABLE);
|
|
if (!app)
|
|
return -EMSGSIZE;
|
|
|
|
spin_lock(&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(&dcb_lock);
|
|
return -EMSGSIZE;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (netdev->dcbnl_ops->getdcbx)
|
|
dcbx = netdev->dcbnl_ops->getdcbx(netdev);
|
|
else
|
|
dcbx = -EOPNOTSUPP;
|
|
|
|
spin_unlock(&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(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(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(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(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(&dcb_lock);
|
|
app = nla_nest_start(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(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(&dcb_lock);
|
|
|
|
/* features flags */
|
|
if (ops->getfeatcfg) {
|
|
struct nlattr *feat = nla_nest_start(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(&dcb_lock);
|
|
nla_put_failure:
|
|
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 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(ieee, DCB_ATTR_IEEE_MAX,
|
|
tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
|
|
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_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_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_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(ieee, DCB_ATTR_IEEE_MAX,
|
|
tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
|
|
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(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
|
|
dcbnl_featcfg_nest);
|
|
if (ret)
|
|
return ret;
|
|
|
|
nest = nla_nest_start(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(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
|
|
dcbnl_featcfg_nest);
|
|
|
|
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, void *arg)
|
|
{
|
|
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) && !capable(CAP_NET_ADMIN))
|
|
return -EPERM;
|
|
|
|
ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX,
|
|
dcbnl_rtnl_policy);
|
|
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) {
|
|
ret = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
reply_skb = dcbnl_newmsg(fn->type, dcb->cmd, portid, nlh->nlmsg_seq,
|
|
nlh->nlmsg_flags, &reply_nlh);
|
|
if (!reply_skb) {
|
|
ret = -ENOBUFS;
|
|
goto out;
|
|
}
|
|
|
|
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:
|
|
dev_put(netdev);
|
|
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 || 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(&dcb_lock);
|
|
if ((itr = dcb_app_lookup(app, dev->ifindex, 0)))
|
|
prio = itr->app.priority;
|
|
spin_unlock(&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.
|
|
*/
|
|
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(&dcb_lock);
|
|
/* Search for existing match and replace */
|
|
if ((itr = dcb_app_lookup(new, dev->ifindex, 0))) {
|
|
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(&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(&dcb_lock);
|
|
if ((itr = dcb_app_lookup(app, dev->ifindex, 0)))
|
|
prio |= 1 << itr->app.priority;
|
|
spin_unlock(&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.
|
|
*/
|
|
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(&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(&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(&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(&dcb_lock);
|
|
if (!err)
|
|
call_dcbevent_notifiers(DCB_APP_EVENT, &event);
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL(dcb_ieee_delapp);
|
|
|
|
static void dcb_flushapp(void)
|
|
{
|
|
struct dcb_app_type *app;
|
|
struct dcb_app_type *tmp;
|
|
|
|
spin_lock(&dcb_lock);
|
|
list_for_each_entry_safe(app, tmp, &dcb_app_list, list) {
|
|
list_del(&app->list);
|
|
kfree(app);
|
|
}
|
|
spin_unlock(&dcb_lock);
|
|
}
|
|
|
|
static int __init dcbnl_init(void)
|
|
{
|
|
INIT_LIST_HEAD(&dcb_app_list);
|
|
|
|
rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL, NULL);
|
|
rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL, NULL);
|
|
|
|
return 0;
|
|
}
|
|
module_init(dcbnl_init);
|
|
|
|
static void __exit dcbnl_exit(void)
|
|
{
|
|
rtnl_unregister(PF_UNSPEC, RTM_GETDCB);
|
|
rtnl_unregister(PF_UNSPEC, RTM_SETDCB);
|
|
dcb_flushapp();
|
|
}
|
|
module_exit(dcbnl_exit);
|