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Diffstat (limited to 'net/dcb/dcbnl.c')
-rw-r--r--net/dcb/dcbnl.c1705
1 files changed, 1188 insertions, 517 deletions
diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c
index 19ac2b98548..f8b98d89c28 100644
--- a/net/dcb/dcbnl.c
+++ b/net/dcb/dcbnl.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2008, Intel Corporation.
+ * 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,
@@ -11,8 +11,7 @@
* 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.
+ * this program; if not, see <http://www.gnu.org/licenses/>.
*
* Author: Lucy Liu <lucy.liu@intel.com>
*/
@@ -23,11 +22,12 @@
#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
+/* 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:
@@ -66,6 +66,9 @@ static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = {
[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 */
@@ -122,6 +125,7 @@ static const struct nla_policy dcbnl_cap_nest[DCB_CAP_ATTR_MAX + 1] = {
[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. */
@@ -167,92 +171,89 @@ static const struct nla_policy dcbnl_app_nest[DCB_APP_ATTR_MAX + 1] = {
[DCB_APP_ATTR_PRIORITY] = {.type = NLA_U8},
};
-/* standard netlink reply call */
-static int dcbnl_reply(u8 value, u8 event, u8 cmd, u8 attr, u32 pid,
- u32 seq, u16 flags)
+/* 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 *dcbnl_skb;
+ struct sk_buff *skb;
struct dcbmsg *dcb;
struct nlmsghdr *nlh;
- int ret = -EINVAL;
- dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!dcbnl_skb)
- return ret;
+ skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!skb)
+ return NULL;
- nlh = NLMSG_NEW(dcbnl_skb, pid, seq, event, sizeof(*dcb), flags);
+ nlh = nlmsg_put(skb, port, seq, type, sizeof(*dcb), flags);
+ BUG_ON(!nlh);
- dcb = NLMSG_DATA(nlh);
+ dcb = nlmsg_data(nlh);
dcb->dcb_family = AF_UNSPEC;
dcb->cmd = cmd;
dcb->dcb_pad = 0;
- ret = nla_put_u8(dcbnl_skb, attr, value);
- if (ret)
- goto err;
-
- /* end the message, assign the nlmsg_len. */
- nlmsg_end(dcbnl_skb, nlh);
- ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
- if (ret)
- return -EINVAL;
+ if (nlhp)
+ *nlhp = nlh;
- return 0;
-nlmsg_failure:
-err:
- kfree_skb(dcbnl_skb);
- return ret;
+ return skb;
}
-static int dcbnl_getstate(struct net_device *netdev, struct nlattr **tb,
- u32 pid, u32 seq, u16 flags)
+static int dcbnl_getstate(struct net_device *netdev, struct nlmsghdr *nlh,
+ u32 seq, struct nlattr **tb, struct sk_buff *skb)
{
- int ret = -EINVAL;
-
/* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */
if (!netdev->dcbnl_ops->getstate)
- return ret;
-
- ret = dcbnl_reply(netdev->dcbnl_ops->getstate(netdev), RTM_GETDCB,
- DCB_CMD_GSTATE, DCB_ATTR_STATE, pid, seq, flags);
+ return -EOPNOTSUPP;
- return ret;
+ return nla_put_u8(skb, DCB_ATTR_STATE,
+ netdev->dcbnl_ops->getstate(netdev));
}
-static int dcbnl_getpfccfg(struct net_device *netdev, struct nlattr **tb,
- u32 pid, u32 seq, u16 flags)
+static int dcbnl_getpfccfg(struct net_device *netdev, struct nlmsghdr *nlh,
+ u32 seq, struct nlattr **tb, struct sk_buff *skb)
{
- struct sk_buff *dcbnl_skb;
- struct nlmsghdr *nlh;
- struct dcbmsg *dcb;
struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest;
u8 value;
- int ret = -EINVAL;
+ int ret;
int i;
int getall = 0;
- if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->getpfccfg)
- return ret;
+ 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)
- goto err_out;
-
- dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!dcbnl_skb)
- goto err_out;
-
- nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
-
- dcb = NLMSG_DATA(nlh);
- dcb->dcb_family = AF_UNSPEC;
- dcb->cmd = DCB_CMD_PFC_GCFG;
+ return ret;
- nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PFC_CFG);
+ nest = nla_nest_start(skb, DCB_ATTR_PFC_CFG);
if (!nest)
- goto err;
+ return -EMSGSIZE;
if (data[DCB_PFC_UP_ATTR_ALL])
getall = 1;
@@ -263,103 +264,54 @@ static int dcbnl_getpfccfg(struct net_device *netdev, struct nlattr **tb,
netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0,
&value);
- ret = nla_put_u8(dcbnl_skb, i, value);
-
+ ret = nla_put_u8(skb, i, value);
if (ret) {
- nla_nest_cancel(dcbnl_skb, nest);
- goto err;
+ nla_nest_cancel(skb, nest);
+ return ret;
}
}
- nla_nest_end(dcbnl_skb, nest);
-
- nlmsg_end(dcbnl_skb, nlh);
-
- ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
- if (ret)
- goto err_out;
+ nla_nest_end(skb, nest);
return 0;
-nlmsg_failure:
-err:
- kfree_skb(dcbnl_skb);
-err_out:
- return -EINVAL;
}
-static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlattr **tb,
- u32 pid, u32 seq, u16 flags)
+static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlmsghdr *nlh,
+ u32 seq, struct nlattr **tb, struct sk_buff *skb)
{
- struct sk_buff *dcbnl_skb;
- struct nlmsghdr *nlh;
- struct dcbmsg *dcb;
u8 perm_addr[MAX_ADDR_LEN];
- int ret = -EINVAL;
if (!netdev->dcbnl_ops->getpermhwaddr)
- return ret;
-
- dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!dcbnl_skb)
- goto err_out;
-
- nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
-
- dcb = NLMSG_DATA(nlh);
- dcb->dcb_family = AF_UNSPEC;
- dcb->cmd = DCB_CMD_GPERM_HWADDR;
+ return -EOPNOTSUPP;
+ memset(perm_addr, 0, sizeof(perm_addr));
netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr);
- ret = nla_put(dcbnl_skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr),
- perm_addr);
-
- nlmsg_end(dcbnl_skb, nlh);
-
- ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
- if (ret)
- goto err_out;
-
- return 0;
-
-nlmsg_failure:
- kfree_skb(dcbnl_skb);
-err_out:
- return -EINVAL;
+ return nla_put(skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr), perm_addr);
}
-static int dcbnl_getcap(struct net_device *netdev, struct nlattr **tb,
- u32 pid, u32 seq, u16 flags)
+static int dcbnl_getcap(struct net_device *netdev, struct nlmsghdr *nlh,
+ u32 seq, struct nlattr **tb, struct sk_buff *skb)
{
- struct sk_buff *dcbnl_skb;
- struct nlmsghdr *nlh;
- struct dcbmsg *dcb;
struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest;
u8 value;
- int ret = -EINVAL;
+ int ret;
int i;
int getall = 0;
- if (!tb[DCB_ATTR_CAP] || !netdev->dcbnl_ops->getcap)
- return ret;
+ 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)
- goto err_out;
-
- dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!dcbnl_skb)
- goto err_out;
-
- nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
-
- dcb = NLMSG_DATA(nlh);
- dcb->dcb_family = AF_UNSPEC;
- dcb->cmd = DCB_CMD_GCAP;
+ return ret;
- nest = nla_nest_start(dcbnl_skb, DCB_ATTR_CAP);
+ nest = nla_nest_start(skb, DCB_ATTR_CAP);
if (!nest)
- goto err;
+ return -EMSGSIZE;
if (data[DCB_CAP_ATTR_ALL])
getall = 1;
@@ -369,69 +321,41 @@ static int dcbnl_getcap(struct net_device *netdev, struct nlattr **tb,
continue;
if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) {
- ret = nla_put_u8(dcbnl_skb, i, value);
-
+ ret = nla_put_u8(skb, i, value);
if (ret) {
- nla_nest_cancel(dcbnl_skb, nest);
- goto err;
+ nla_nest_cancel(skb, nest);
+ return ret;
}
}
}
- nla_nest_end(dcbnl_skb, nest);
-
- nlmsg_end(dcbnl_skb, nlh);
-
- ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
- if (ret)
- goto err_out;
+ nla_nest_end(skb, nest);
return 0;
-nlmsg_failure:
-err:
- kfree_skb(dcbnl_skb);
-err_out:
- return -EINVAL;
}
-static int dcbnl_getnumtcs(struct net_device *netdev, struct nlattr **tb,
- u32 pid, u32 seq, u16 flags)
+static int dcbnl_getnumtcs(struct net_device *netdev, struct nlmsghdr *nlh,
+ u32 seq, struct nlattr **tb, struct sk_buff *skb)
{
- struct sk_buff *dcbnl_skb;
- struct nlmsghdr *nlh;
- struct dcbmsg *dcb;
struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest;
u8 value;
- int ret = -EINVAL;
+ int ret;
int i;
int getall = 0;
- if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->getnumtcs)
- return ret;
+ 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) {
- ret = -EINVAL;
- goto err_out;
- }
-
- dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!dcbnl_skb) {
- ret = -EINVAL;
- goto err_out;
- }
-
- nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
-
- dcb = NLMSG_DATA(nlh);
- dcb->dcb_family = AF_UNSPEC;
- dcb->cmd = DCB_CMD_GNUMTCS;
+ if (ret)
+ return ret;
- nest = nla_nest_start(dcbnl_skb, DCB_ATTR_NUMTCS);
- if (!nest) {
- ret = -EINVAL;
- goto err;
- }
+ nest = nla_nest_start(skb, DCB_ATTR_NUMTCS);
+ if (!nest)
+ return -EMSGSIZE;
if (data[DCB_NUMTCS_ATTR_ALL])
getall = 1;
@@ -442,53 +366,37 @@ static int dcbnl_getnumtcs(struct net_device *netdev, struct nlattr **tb,
ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value);
if (!ret) {
- ret = nla_put_u8(dcbnl_skb, i, value);
-
+ ret = nla_put_u8(skb, i, value);
if (ret) {
- nla_nest_cancel(dcbnl_skb, nest);
- ret = -EINVAL;
- goto err;
+ nla_nest_cancel(skb, nest);
+ return ret;
}
- } else {
- goto err;
- }
- }
- nla_nest_end(dcbnl_skb, nest);
-
- nlmsg_end(dcbnl_skb, nlh);
-
- ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
- if (ret) {
- ret = -EINVAL;
- goto err_out;
+ } else
+ return -EINVAL;
}
+ nla_nest_end(skb, nest);
return 0;
-nlmsg_failure:
-err:
- kfree_skb(dcbnl_skb);
-err_out:
- return ret;
}
-static int dcbnl_setnumtcs(struct net_device *netdev, struct nlattr **tb,
- u32 pid, u32 seq, u16 flags)
+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 = -EINVAL;
+ int ret;
u8 value;
int i;
- if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->setnumtcs)
- return ret;
+ 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) {
- ret = -EINVAL;
- goto err;
- }
+ if (ret)
+ return ret;
for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
if (data[i] == NULL)
@@ -497,207 +405,181 @@ static int dcbnl_setnumtcs(struct net_device *netdev, struct nlattr **tb,
value = nla_get_u8(data[i]);
ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value);
-
if (ret)
- goto operr;
+ break;
}
-operr:
- ret = dcbnl_reply(!!ret, RTM_SETDCB, DCB_CMD_SNUMTCS,
- DCB_ATTR_NUMTCS, pid, seq, flags);
-
-err:
- return ret;
+ return nla_put_u8(skb, DCB_ATTR_NUMTCS, !!ret);
}
-static int dcbnl_getpfcstate(struct net_device *netdev, struct nlattr **tb,
- u32 pid, u32 seq, u16 flags)
+static int dcbnl_getpfcstate(struct net_device *netdev, struct nlmsghdr *nlh,
+ u32 seq, struct nlattr **tb, struct sk_buff *skb)
{
- int ret = -EINVAL;
-
if (!netdev->dcbnl_ops->getpfcstate)
- return ret;
-
- ret = dcbnl_reply(netdev->dcbnl_ops->getpfcstate(netdev), RTM_GETDCB,
- DCB_CMD_PFC_GSTATE, DCB_ATTR_PFC_STATE,
- pid, seq, flags);
+ return -EOPNOTSUPP;
- return ret;
+ return nla_put_u8(skb, DCB_ATTR_PFC_STATE,
+ netdev->dcbnl_ops->getpfcstate(netdev));
}
-static int dcbnl_setpfcstate(struct net_device *netdev, struct nlattr **tb,
- u32 pid, u32 seq, u16 flags)
+static int dcbnl_setpfcstate(struct net_device *netdev, struct nlmsghdr *nlh,
+ u32 seq, struct nlattr **tb, struct sk_buff *skb)
{
- int ret = -EINVAL;
u8 value;
- if (!tb[DCB_ATTR_PFC_STATE] || !netdev->dcbnl_ops->setpfcstate)
- return ret;
+ 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);
- ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SSTATE, DCB_ATTR_PFC_STATE,
- pid, seq, flags);
-
- return ret;
+ return nla_put_u8(skb, DCB_ATTR_PFC_STATE, 0);
}
-static int dcbnl_getapp(struct net_device *netdev, struct nlattr **tb,
- u32 pid, u32 seq, u16 flags)
+static int dcbnl_getapp(struct net_device *netdev, struct nlmsghdr *nlh,
+ u32 seq, struct nlattr **tb, struct sk_buff *skb)
{
- struct sk_buff *dcbnl_skb;
- struct nlmsghdr *nlh;
- struct dcbmsg *dcb;
struct nlattr *app_nest;
struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
u16 id;
u8 up, idtype;
- int ret = -EINVAL;
+ int ret;
- if (!tb[DCB_ATTR_APP] || !netdev->dcbnl_ops->getapp)
- goto out;
+ 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)
- goto out;
+ return ret;
- ret = -EINVAL;
/* all must be non-null */
if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
(!app_tb[DCB_APP_ATTR_ID]))
- goto out;
+ 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))
- goto out;
+ return -EINVAL;
id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
- up = netdev->dcbnl_ops->getapp(netdev, idtype, id);
- /* send this back */
- dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!dcbnl_skb)
- goto out;
+ 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);
+ }
- nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
- dcb = NLMSG_DATA(nlh);
- dcb->dcb_family = AF_UNSPEC;
- dcb->cmd = DCB_CMD_GAPP;
+ app_nest = nla_nest_start(skb, DCB_ATTR_APP);
+ if (!app_nest)
+ return -EMSGSIZE;
- app_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_APP);
- ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_IDTYPE, idtype);
+ ret = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE, idtype);
if (ret)
goto out_cancel;
- ret = nla_put_u16(dcbnl_skb, DCB_APP_ATTR_ID, id);
+ ret = nla_put_u16(skb, DCB_APP_ATTR_ID, id);
if (ret)
goto out_cancel;
- ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_PRIORITY, up);
+ ret = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY, up);
if (ret)
goto out_cancel;
- nla_nest_end(dcbnl_skb, app_nest);
- nlmsg_end(dcbnl_skb, nlh);
+ nla_nest_end(skb, app_nest);
- ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
- if (ret)
- goto nlmsg_failure;
-
- goto out;
+ return 0;
out_cancel:
- nla_nest_cancel(dcbnl_skb, app_nest);
-nlmsg_failure:
- kfree_skb(dcbnl_skb);
-out:
+ nla_nest_cancel(skb, app_nest);
return ret;
}
-static int dcbnl_setapp(struct net_device *netdev, struct nlattr **tb,
- u32 pid, u32 seq, u16 flags)
+static int dcbnl_setapp(struct net_device *netdev, struct nlmsghdr *nlh,
+ u32 seq, struct nlattr **tb, struct sk_buff *skb)
{
- int ret = -EINVAL;
+ int ret;
u16 id;
u8 up, idtype;
struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
- if (!tb[DCB_ATTR_APP] || !netdev->dcbnl_ops->setapp)
- goto out;
+ 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)
- goto out;
+ return ret;
- ret = -EINVAL;
/* all must be non-null */
if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
(!app_tb[DCB_APP_ATTR_ID]) ||
(!app_tb[DCB_APP_ATTR_PRIORITY]))
- goto out;
+ 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))
- goto out;
+ return -EINVAL;
id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]);
- ret = dcbnl_reply(netdev->dcbnl_ops->setapp(netdev, idtype, id, up),
- RTM_SETDCB, DCB_CMD_SAPP, DCB_ATTR_APP,
- pid, seq, flags);
-out:
+ 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 nlattr **tb,
- u32 pid, u32 seq, u16 flags, int dir)
+static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
+ struct nlattr **tb, struct sk_buff *skb, int dir)
{
- struct sk_buff *dcbnl_skb;
- struct nlmsghdr *nlh;
- struct dcbmsg *dcb;
struct nlattr *pg_nest, *param_nest, *data;
struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
u8 prio, pgid, tc_pct, up_map;
- int ret = -EINVAL;
+ int ret;
int getall = 0;
int i;
- if (!tb[DCB_ATTR_PG_CFG] ||
- !netdev->dcbnl_ops->getpgtccfgtx ||
+ 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 ret;
+ return -EOPNOTSUPP;
ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
-
if (ret)
- goto err_out;
-
- dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!dcbnl_skb)
- goto err_out;
-
- nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
-
- dcb = NLMSG_DATA(nlh);
- dcb->dcb_family = AF_UNSPEC;
- dcb->cmd = (dir) ? DCB_CMD_PGRX_GCFG : DCB_CMD_PGTX_GCFG;
+ return ret;
- pg_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PG_CFG);
+ pg_nest = nla_nest_start(skb, DCB_ATTR_PG_CFG);
if (!pg_nest)
- goto err;
+ return -EMSGSIZE;
if (pg_tb[DCB_PG_ATTR_TC_ALL])
getall = 1;
@@ -715,7 +597,7 @@ static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlattr **tb,
if (ret)
goto err_pg;
- param_nest = nla_nest_start(dcbnl_skb, i);
+ param_nest = nla_nest_start(skb, i);
if (!param_nest)
goto err_pg;
@@ -738,33 +620,33 @@ static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlattr **tb,
if (param_tb[DCB_TC_ATTR_PARAM_PGID] ||
param_tb[DCB_TC_ATTR_PARAM_ALL]) {
- ret = nla_put_u8(dcbnl_skb,
+ 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(dcbnl_skb,
+ 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(dcbnl_skb,
+ 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(dcbnl_skb, DCB_TC_ATTR_PARAM_BW_PCT,
+ ret = nla_put_u8(skb, DCB_TC_ATTR_PARAM_BW_PCT,
tc_pct);
if (ret)
goto err_param;
}
- nla_nest_end(dcbnl_skb, param_nest);
+ nla_nest_end(skb, param_nest);
}
if (pg_tb[DCB_PG_ATTR_BW_ID_ALL])
@@ -787,80 +669,71 @@ static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlattr **tb,
netdev->dcbnl_ops->getpgbwgcfgtx(netdev,
i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
}
- ret = nla_put_u8(dcbnl_skb, i, tc_pct);
-
+ ret = nla_put_u8(skb, i, tc_pct);
if (ret)
goto err_pg;
}
- nla_nest_end(dcbnl_skb, pg_nest);
-
- nlmsg_end(dcbnl_skb, nlh);
-
- ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
- if (ret)
- goto err_out;
+ nla_nest_end(skb, pg_nest);
return 0;
err_param:
- nla_nest_cancel(dcbnl_skb, param_nest);
+ nla_nest_cancel(skb, param_nest);
err_pg:
- nla_nest_cancel(dcbnl_skb, pg_nest);
-nlmsg_failure:
-err:
- kfree_skb(dcbnl_skb);
-err_out:
- ret = -EINVAL;
- return ret;
+ nla_nest_cancel(skb, pg_nest);
+
+ return -EMSGSIZE;
}
-static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlattr **tb,
- u32 pid, u32 seq, u16 flags)
+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, tb, pid, seq, flags, 0);
+ return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, 0);
}
-static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlattr **tb,
- u32 pid, u32 seq, u16 flags)
+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, tb, pid, seq, flags, 1);
+ return __dcbnl_pg_getcfg(netdev, nlh, tb, skb, 1);
}
-static int dcbnl_setstate(struct net_device *netdev, struct nlattr **tb,
- u32 pid, u32 seq, u16 flags)
+static int dcbnl_setstate(struct net_device *netdev, struct nlmsghdr *nlh,
+ u32 seq, struct nlattr **tb, struct sk_buff *skb)
{
- int ret = -EINVAL;
u8 value;
- if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->setstate)
- return ret;
+ if (!tb[DCB_ATTR_STATE])
+ return -EINVAL;
- value = nla_get_u8(tb[DCB_ATTR_STATE]);
+ if (!netdev->dcbnl_ops->setstate)
+ return -EOPNOTSUPP;
- ret = dcbnl_reply(netdev->dcbnl_ops->setstate(netdev, value),
- RTM_SETDCB, DCB_CMD_SSTATE, DCB_ATTR_STATE,
- pid, seq, flags);
+ value = nla_get_u8(tb[DCB_ATTR_STATE]);
- return ret;
+ return nla_put_u8(skb, DCB_ATTR_STATE,
+ netdev->dcbnl_ops->setstate(netdev, value));
}
-static int dcbnl_setpfccfg(struct net_device *netdev, struct nlattr **tb,
- u32 pid, u32 seq, u16 flags)
+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 = -EINVAL;
+ int ret;
u8 value;
- if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->setpfccfg)
- return ret;
+ 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)
- goto err;
+ return ret;
for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
if (data[i] == NULL)
@@ -870,49 +743,53 @@ static int dcbnl_setpfccfg(struct net_device *netdev, struct nlattr **tb,
data[i]->nla_type - DCB_PFC_UP_ATTR_0, value);
}
- ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SCFG, DCB_ATTR_PFC_CFG,
- pid, seq, flags);
-err:
- return ret;
+ return nla_put_u8(skb, DCB_ATTR_PFC_CFG, 0);
}
-static int dcbnl_setall(struct net_device *netdev, struct nlattr **tb,
- u32 pid, u32 seq, u16 flags)
+static int dcbnl_setall(struct net_device *netdev, struct nlmsghdr *nlh,
+ u32 seq, struct nlattr **tb, struct sk_buff *skb)
{
- int ret = -EINVAL;
+ int ret;
- if (!tb[DCB_ATTR_SET_ALL] || !netdev->dcbnl_ops->setall)
- return ret;
+ if (!tb[DCB_ATTR_SET_ALL])
+ return -EINVAL;
- ret = dcbnl_reply(netdev->dcbnl_ops->setall(netdev), RTM_SETDCB,
- DCB_CMD_SET_ALL, DCB_ATTR_SET_ALL, pid, seq, flags);
+ 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 nlattr **tb,
- u32 pid, u32 seq, u16 flags, int dir)
+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 = -EINVAL;
+ int ret;
int i;
u8 pgid;
u8 up_map;
u8 prio;
u8 tc_pct;
- if (!tb[DCB_ATTR_PG_CFG] ||
- !netdev->dcbnl_ops->setpgtccfgtx ||
+ 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 ret;
+ return -EOPNOTSUPP;
ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
if (ret)
- goto err;
+ return ret;
for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
if (!pg_tb[i])
@@ -921,7 +798,7 @@ static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlattr **tb,
ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
pg_tb[i], dcbnl_tc_param_nest);
if (ret)
- goto err;
+ return ret;
pgid = DCB_ATTR_VALUE_UNDEFINED;
prio = DCB_ATTR_VALUE_UNDEFINED;
@@ -974,63 +851,47 @@ static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlattr **tb,
}
}
- ret = dcbnl_reply(0, RTM_SETDCB,
- (dir ? DCB_CMD_PGRX_SCFG : DCB_CMD_PGTX_SCFG),
- DCB_ATTR_PG_CFG, pid, seq, flags);
-
-err:
- return ret;
+ return nla_put_u8(skb, DCB_ATTR_PG_CFG, 0);
}
-static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlattr **tb,
- u32 pid, u32 seq, u16 flags)
+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, tb, pid, seq, flags, 0);
+ return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, 0);
}
-static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlattr **tb,
- u32 pid, u32 seq, u16 flags)
+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, tb, pid, seq, flags, 1);
+ return __dcbnl_pg_setcfg(netdev, nlh, seq, tb, skb, 1);
}
-static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlattr **tb,
- u32 pid, u32 seq, u16 flags)
+static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlmsghdr *nlh,
+ u32 seq, struct nlattr **tb, struct sk_buff *skb)
{
- struct sk_buff *dcbnl_skb;
- struct nlmsghdr *nlh;
- struct dcbmsg *dcb;
struct nlattr *bcn_nest;
struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1];
u8 value_byte;
u32 value_integer;
- int ret = -EINVAL;
+ int ret;
bool getall = false;
int i;
- if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->getbcnrp ||
+ if (!tb[DCB_ATTR_BCN])
+ return -EINVAL;
+
+ if (!netdev->dcbnl_ops->getbcnrp ||
!netdev->dcbnl_ops->getbcncfg)
- return ret;
+ return -EOPNOTSUPP;
ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX,
tb[DCB_ATTR_BCN], dcbnl_bcn_nest);
-
if (ret)
- goto err_out;
-
- dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!dcbnl_skb)
- goto err_out;
-
- nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
-
- dcb = NLMSG_DATA(nlh);
- dcb->dcb_family = AF_UNSPEC;
- dcb->cmd = DCB_CMD_BCN_GCFG;
+ return ret;
- bcn_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_BCN);
+ bcn_nest = nla_nest_start(skb, DCB_ATTR_BCN);
if (!bcn_nest)
- goto err;
+ return -EMSGSIZE;
if (bcn_tb[DCB_BCN_ATTR_ALL])
getall = true;
@@ -1041,7 +902,7 @@ static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlattr **tb,
netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0,
&value_byte);
- ret = nla_put_u8(dcbnl_skb, i, value_byte);
+ ret = nla_put_u8(skb, i, value_byte);
if (ret)
goto err_bcn;
}
@@ -1052,49 +913,41 @@ static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlattr **tb,
netdev->dcbnl_ops->getbcncfg(netdev, i,
&value_integer);
- ret = nla_put_u32(dcbnl_skb, i, value_integer);
+ ret = nla_put_u32(skb, i, value_integer);
if (ret)
goto err_bcn;
}
- nla_nest_end(dcbnl_skb, bcn_nest);
-
- nlmsg_end(dcbnl_skb, nlh);
-
- ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
- if (ret)
- goto err_out;
+ nla_nest_end(skb, bcn_nest);
return 0;
err_bcn:
- nla_nest_cancel(dcbnl_skb, bcn_nest);
-nlmsg_failure:
-err:
- kfree_skb(dcbnl_skb);
-err_out:
- ret = -EINVAL;
+ nla_nest_cancel(skb, bcn_nest);
return ret;
}
-static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlattr **tb,
- u32 pid, u32 seq, u16 flags)
+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 = -EINVAL;
+ int ret;
u8 value_byte;
u32 value_int;
- if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->setbcncfg ||
+ if (!tb[DCB_ATTR_BCN])
+ return -EINVAL;
+
+ if (!netdev->dcbnl_ops->setbcncfg ||
!netdev->dcbnl_ops->setbcnrp)
- return ret;
+ return -EOPNOTSUPP;
ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX,
tb[DCB_ATTR_BCN],
dcbnl_pfc_up_nest);
if (ret)
- goto err;
+ return ret;
for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
if (data[i] == NULL)
@@ -1112,131 +965,950 @@ static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlattr **tb,
i, value_int);
}
- ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_BCN_SCFG, DCB_ATTR_BCN,
- pid, seq, flags);
+ 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;
}
-static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
+/* 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 net *net = sock_net(skb->sk);
struct net_device *netdev;
- struct dcbmsg *dcb = (struct dcbmsg *)NLMSG_DATA(nlh);
+ struct dcbmsg *dcb = nlmsg_data(nlh);
struct nlattr *tb[DCB_ATTR_MAX + 1];
- u32 pid = skb ? NETLINK_CB(skb).pid : 0;
+ 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 (!net_eq(net, &init_net))
- return -EINVAL;
+ if ((nlh->nlmsg_type == RTM_SETDCB) && !netlink_capable(skb, 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(&init_net, nla_data(tb[DCB_ATTR_IFNAME]));
+ netdev = __dev_get_by_name(net, nla_data(tb[DCB_ATTR_IFNAME]));
if (!netdev)
- return -EINVAL;
+ return -ENODEV;
if (!netdev->dcbnl_ops)
- goto errout;
+ return -EOPNOTSUPP;
- switch (dcb->cmd) {
- case DCB_CMD_GSTATE:
- ret = dcbnl_getstate(netdev, tb, pid, nlh->nlmsg_seq,
- nlh->nlmsg_flags);
- goto out;
- case DCB_CMD_PFC_GCFG:
- ret = dcbnl_getpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
- nlh->nlmsg_flags);
- goto out;
- case DCB_CMD_GPERM_HWADDR:
- ret = dcbnl_getperm_hwaddr(netdev, tb, pid, nlh->nlmsg_seq,
- nlh->nlmsg_flags);
- goto out;
- case DCB_CMD_PGTX_GCFG:
- ret = dcbnl_pgtx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
- nlh->nlmsg_flags);
- goto out;
- case DCB_CMD_PGRX_GCFG:
- ret = dcbnl_pgrx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
- nlh->nlmsg_flags);
- goto out;
- case DCB_CMD_BCN_GCFG:
- ret = dcbnl_bcn_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
- nlh->nlmsg_flags);
- goto out;
- case DCB_CMD_SSTATE:
- ret = dcbnl_setstate(netdev, tb, pid, nlh->nlmsg_seq,
- nlh->nlmsg_flags);
- goto out;
- case DCB_CMD_PFC_SCFG:
- ret = dcbnl_setpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
- nlh->nlmsg_flags);
- goto out;
+ reply_skb = dcbnl_newmsg(fn->type, dcb->cmd, portid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags, &reply_nlh);
+ if (!reply_skb)
+ return -ENOBUFS;
- case DCB_CMD_SET_ALL:
- ret = dcbnl_setall(netdev, tb, pid, nlh->nlmsg_seq,
- nlh->nlmsg_flags);
- goto out;
- case DCB_CMD_PGTX_SCFG:
- ret = dcbnl_pgtx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
- nlh->nlmsg_flags);
- goto out;
- case DCB_CMD_PGRX_SCFG:
- ret = dcbnl_pgrx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
- nlh->nlmsg_flags);
- goto out;
- case DCB_CMD_GCAP:
- ret = dcbnl_getcap(netdev, tb, pid, nlh->nlmsg_seq,
- nlh->nlmsg_flags);
- goto out;
- case DCB_CMD_GNUMTCS:
- ret = dcbnl_getnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
- nlh->nlmsg_flags);
- goto out;
- case DCB_CMD_SNUMTCS:
- ret = dcbnl_setnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
- nlh->nlmsg_flags);
- goto out;
- case DCB_CMD_PFC_GSTATE:
- ret = dcbnl_getpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
- nlh->nlmsg_flags);
- goto out;
- case DCB_CMD_PFC_SSTATE:
- ret = dcbnl_setpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
- nlh->nlmsg_flags);
- goto out;
- case DCB_CMD_BCN_SCFG:
- ret = dcbnl_bcn_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
- nlh->nlmsg_flags);
+ ret = fn->cb(netdev, nlh, nlh->nlmsg_seq, tb, reply_skb);
+ if (ret < 0) {
+ nlmsg_free(reply_skb);
goto out;
- case DCB_CMD_GAPP:
- ret = dcbnl_getapp(netdev, tb, pid, nlh->nlmsg_seq,
- nlh->nlmsg_flags);
+ }
+
+ 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 || 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;
- case DCB_CMD_SAPP:
- ret = dcbnl_setapp(netdev, tb, pid, nlh->nlmsg_seq,
- nlh->nlmsg_flags);
+ }
+ /* 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;
- default:
- goto errout;
}
-errout:
- ret = -EINVAL;
+
+ err = dcb_app_add(new, dev->ifindex);
out:
- dev_put(netdev);
- return ret;
+ 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)
{
- rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL);
- rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL);
+ 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;
}
@@ -1246,7 +1918,6 @@ static void __exit dcbnl_exit(void)
{
rtnl_unregister(PF_UNSPEC, RTM_GETDCB);
rtnl_unregister(PF_UNSPEC, RTM_SETDCB);
+ dcb_flushapp();
}
module_exit(dcbnl_exit);
-
-
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 13:27:58 +0000