From 2f90b8657ec942d1880f720e0177ee71df7c8e3c Mon Sep 17 00:00:00 2001
From: Alexander Duyck <alexander.h.duyck@intel.com>
Date: Thu, 20 Nov 2008 20:52:10 -0800
Subject: ixgbe: this patch adds support for DCB to the kernel and ixgbe driver
This adds support for Data Center Bridging (DCB) features in the ixgbe
driver and adds an rtnetlink interface for configuring DCB to the
kernel. The DCB feature support included are Priority Grouping (PG) -
which allows bandwidth guarantees to be allocated to groups to traffic
based on the 802.1q priority, and Priority Based Flow Control (PFC) -
which introduces a new MAC control PAUSE frame which works at
granularity of the 802.1p priority instead of the link (IEEE 802.3x).
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
include/linux/dcbnl.h | 230 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 230 insertions(+)
create mode 100644 include/linux/dcbnl.h
(limited to 'include/linux/dcbnl.h')
diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h
new file mode 100644
index 00000000000..32d32c1ee41
--- /dev/null
+++ b/include/linux/dcbnl.h
@@ -0,0 +1,230 @@
+/*
+ * Copyright (c) 2008, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * Author: Lucy Liu <lucy.liu@intel.com>
+ */
+
+#ifndef __LINUX_DCBNL_H__
+#define __LINUX_DCBNL_H__
+
+#define DCB_PROTO_VERSION 1
+
+struct dcbmsg {
+ unsigned char dcb_family;
+ __u8 cmd;
+ __u16 dcb_pad;
+};
+
+/**
+ * enum dcbnl_commands - supported DCB commands
+ *
+ * @DCB_CMD_UNDEFINED: unspecified command to catch errors
+ * @DCB_CMD_GSTATE: request the state of DCB in the device
+ * @DCB_CMD_SSTATE: set the state of DCB in the device
+ * @DCB_CMD_PGTX_GCFG: request the priority group configuration for Tx
+ * @DCB_CMD_PGTX_SCFG: set the priority group configuration for Tx
+ * @DCB_CMD_PGRX_GCFG: request the priority group configuration for Rx
+ * @DCB_CMD_PGRX_SCFG: set the priority group configuration for Rx
+ * @DCB_CMD_PFC_GCFG: request the priority flow control configuration
+ * @DCB_CMD_PFC_SCFG: set the priority flow control configuration
+ * @DCB_CMD_SET_ALL: apply all changes to the underlying device
+ * @DCB_CMD_GPERM_HWADDR: get the permanent MAC address of the underlying
+ * device. Only useful when using bonding.
+ */
+enum dcbnl_commands {
+ DCB_CMD_UNDEFINED,
+
+ DCB_CMD_GSTATE,
+ DCB_CMD_SSTATE,
+
+ DCB_CMD_PGTX_GCFG,
+ DCB_CMD_PGTX_SCFG,
+ DCB_CMD_PGRX_GCFG,
+ DCB_CMD_PGRX_SCFG,
+
+ DCB_CMD_PFC_GCFG,
+ DCB_CMD_PFC_SCFG,
+
+ DCB_CMD_SET_ALL,
+ DCB_CMD_GPERM_HWADDR,
+
+ __DCB_CMD_ENUM_MAX,
+ DCB_CMD_MAX = __DCB_CMD_ENUM_MAX - 1,
+};
+
+
+/**
+ * enum dcbnl_attrs - DCB top-level netlink attributes
+ *
+ * @DCB_ATTR_UNDEFINED: unspecified attribute to catch errors
+ * @DCB_ATTR_IFNAME: interface name of the underlying device (NLA_STRING)
+ * @DCB_ATTR_STATE: enable state of DCB in the device (NLA_U8)
+ * @DCB_ATTR_PFC_STATE: enable state of PFC in the device (NLA_U8)
+ * @DCB_ATTR_PFC_CFG: priority flow control configuration (NLA_NESTED)
+ * @DCB_ATTR_NUM_TC: number of traffic classes supported in the device (NLA_U8)
+ * @DCB_ATTR_PG_CFG: priority group configuration (NLA_NESTED)
+ * @DCB_ATTR_SET_ALL: bool to commit changes to hardware or not (NLA_U8)
+ * @DCB_ATTR_PERM_HWADDR: MAC address of the physical device (NLA_NESTED)
+ */
+enum dcbnl_attrs {
+ DCB_ATTR_UNDEFINED,
+
+ DCB_ATTR_IFNAME,
+ DCB_ATTR_STATE,
+ DCB_ATTR_PFC_STATE,
+ DCB_ATTR_PFC_CFG,
+ DCB_ATTR_NUM_TC,
+ DCB_ATTR_PG_CFG,
+ DCB_ATTR_SET_ALL,
+ DCB_ATTR_PERM_HWADDR,
+
+ __DCB_ATTR_ENUM_MAX,
+ DCB_ATTR_MAX = __DCB_ATTR_ENUM_MAX - 1,
+};
+
+/**
+ * enum dcbnl_pfc_attrs - DCB Priority Flow Control user priority nested attrs
+ *
+ * @DCB_PFC_UP_ATTR_UNDEFINED: unspecified attribute to catch errors
+ * @DCB_PFC_UP_ATTR_0: Priority Flow Control value for User Priority 0 (NLA_U8)
+ * @DCB_PFC_UP_ATTR_1: Priority Flow Control value for User Priority 1 (NLA_U8)
+ * @DCB_PFC_UP_ATTR_2: Priority Flow Control value for User Priority 2 (NLA_U8)
+ * @DCB_PFC_UP_ATTR_3: Priority Flow Control value for User Priority 3 (NLA_U8)
+ * @DCB_PFC_UP_ATTR_4: Priority Flow Control value for User Priority 4 (NLA_U8)
+ * @DCB_PFC_UP_ATTR_5: Priority Flow Control value for User Priority 5 (NLA_U8)
+ * @DCB_PFC_UP_ATTR_6: Priority Flow Control value for User Priority 6 (NLA_U8)
+ * @DCB_PFC_UP_ATTR_7: Priority Flow Control value for User Priority 7 (NLA_U8)
+ * @DCB_PFC_UP_ATTR_MAX: highest attribute number currently defined
+ * @DCB_PFC_UP_ATTR_ALL: apply to all priority flow control attrs (NLA_FLAG)
+ *
+ */
+enum dcbnl_pfc_up_attrs {
+ DCB_PFC_UP_ATTR_UNDEFINED,
+
+ DCB_PFC_UP_ATTR_0,
+ DCB_PFC_UP_ATTR_1,
+ DCB_PFC_UP_ATTR_2,
+ DCB_PFC_UP_ATTR_3,
+ DCB_PFC_UP_ATTR_4,
+ DCB_PFC_UP_ATTR_5,
+ DCB_PFC_UP_ATTR_6,
+ DCB_PFC_UP_ATTR_7,
+ DCB_PFC_UP_ATTR_ALL,
+
+ __DCB_PFC_UP_ATTR_ENUM_MAX,
+ DCB_PFC_UP_ATTR_MAX = __DCB_PFC_UP_ATTR_ENUM_MAX - 1,
+};
+
+/**
+ * enum dcbnl_pg_attrs - DCB Priority Group attributes
+ *
+ * @DCB_PG_ATTR_UNDEFINED: unspecified attribute to catch errors
+ * @DCB_PG_ATTR_TC_0: Priority Group Traffic Class 0 configuration (NLA_NESTED)
+ * @DCB_PG_ATTR_TC_1: Priority Group Traffic Class 1 configuration (NLA_NESTED)
+ * @DCB_PG_ATTR_TC_2: Priority Group Traffic Class 2 configuration (NLA_NESTED)
+ * @DCB_PG_ATTR_TC_3: Priority Group Traffic Class 3 configuration (NLA_NESTED)
+ * @DCB_PG_ATTR_TC_4: Priority Group Traffic Class 4 configuration (NLA_NESTED)
+ * @DCB_PG_ATTR_TC_5: Priority Group Traffic Class 5 configuration (NLA_NESTED)
+ * @DCB_PG_ATTR_TC_6: Priority Group Traffic Class 6 configuration (NLA_NESTED)
+ * @DCB_PG_ATTR_TC_7: Priority Group Traffic Class 7 configuration (NLA_NESTED)
+ * @DCB_PG_ATTR_TC_MAX: highest attribute number currently defined
+ * @DCB_PG_ATTR_TC_ALL: apply to all traffic classes (NLA_NESTED)
+ * @DCB_PG_ATTR_BW_ID_0: Percent of link bandwidth for Priority Group 0 (NLA_U8)
+ * @DCB_PG_ATTR_BW_ID_1: Percent of link bandwidth for Priority Group 1 (NLA_U8)
+ * @DCB_PG_ATTR_BW_ID_2: Percent of link bandwidth for Priority Group 2 (NLA_U8)
+ * @DCB_PG_ATTR_BW_ID_3: Percent of link bandwidth for Priority Group 3 (NLA_U8)
+ * @DCB_PG_ATTR_BW_ID_4: Percent of link bandwidth for Priority Group 4 (NLA_U8)
+ * @DCB_PG_ATTR_BW_ID_5: Percent of link bandwidth for Priority Group 5 (NLA_U8)
+ * @DCB_PG_ATTR_BW_ID_6: Percent of link bandwidth for Priority Group 6 (NLA_U8)
+ * @DCB_PG_ATTR_BW_ID_7: Percent of link bandwidth for Priority Group 7 (NLA_U8)
+ * @DCB_PG_ATTR_BW_ID_MAX: highest attribute number currently defined
+ * @DCB_PG_ATTR_BW_ID_ALL: apply to all priority groups (NLA_FLAG)
+ *
+ */
+enum dcbnl_pg_attrs {
+ DCB_PG_ATTR_UNDEFINED,
+
+ DCB_PG_ATTR_TC_0,
+ DCB_PG_ATTR_TC_1,
+ DCB_PG_ATTR_TC_2,
+ DCB_PG_ATTR_TC_3,
+ DCB_PG_ATTR_TC_4,
+ DCB_PG_ATTR_TC_5,
+ DCB_PG_ATTR_TC_6,
+ DCB_PG_ATTR_TC_7,
+ DCB_PG_ATTR_TC_MAX,
+ DCB_PG_ATTR_TC_ALL,
+
+ DCB_PG_ATTR_BW_ID_0,
+ DCB_PG_ATTR_BW_ID_1,
+ DCB_PG_ATTR_BW_ID_2,
+ DCB_PG_ATTR_BW_ID_3,
+ DCB_PG_ATTR_BW_ID_4,
+ DCB_PG_ATTR_BW_ID_5,
+ DCB_PG_ATTR_BW_ID_6,
+ DCB_PG_ATTR_BW_ID_7,
+ DCB_PG_ATTR_BW_ID_MAX,
+ DCB_PG_ATTR_BW_ID_ALL,
+
+ __DCB_PG_ATTR_ENUM_MAX,
+ DCB_PG_ATTR_MAX = __DCB_PG_ATTR_ENUM_MAX - 1,
+};
+
+/**
+ * enum dcbnl_tc_attrs - DCB Traffic Class attributes
+ *
+ * @DCB_TC_ATTR_PARAM_UNDEFINED: unspecified attribute to catch errors
+ * @DCB_TC_ATTR_PARAM_PGID: (NLA_U8) Priority group the traffic class belongs to
+ * Valid values are: 0-7
+ * @DCB_TC_ATTR_PARAM_UP_MAPPING: (NLA_U8) Traffic class to user priority map
+ * Some devices may not support changing the
+ * user priority map of a TC.
+ * @DCB_TC_ATTR_PARAM_STRICT_PRIO: (NLA_U8) Strict priority setting
+ * 0 - none
+ * 1 - group strict
+ * 2 - link strict
+ * @DCB_TC_ATTR_PARAM_BW_PCT: optional - (NLA_U8) If supported by the device and
+ * not configured to use link strict priority,
+ * this is the percentage of bandwidth of the
+ * priority group this traffic class belongs to
+ * @DCB_TC_ATTR_PARAM_ALL: (NLA_FLAG) all traffic class parameters
+ *
+ */
+enum dcbnl_tc_attrs {
+ DCB_TC_ATTR_PARAM_UNDEFINED,
+
+ DCB_TC_ATTR_PARAM_PGID,
+ DCB_TC_ATTR_PARAM_UP_MAPPING,
+ DCB_TC_ATTR_PARAM_STRICT_PRIO,
+ DCB_TC_ATTR_PARAM_BW_PCT,
+ DCB_TC_ATTR_PARAM_ALL,
+
+ __DCB_TC_ATTR_PARAM_ENUM_MAX,
+ DCB_TC_ATTR_PARAM_MAX = __DCB_TC_ATTR_PARAM_ENUM_MAX - 1,
+};
+
+/**
+ * enum dcb_general_attr_values - general DCB attribute values
+ *
+ * @DCB_ATTR_UNDEFINED: value used to indicate an attribute is not supported
+ *
+ */
+enum dcb_general_attr_values {
+ DCB_ATTR_VALUE_UNDEFINED = 0xff
+};
+
+
+#endif /* __LINUX_DCBNL_H__ */
--
cgit v1.2.3-70-g09d2
From 46132188bf72e22ef097f16ed5c969ee8cea1e8b Mon Sep 17 00:00:00 2001
From: Alexander Duyck <alexander.h.duyck@intel.com>
Date: Thu, 20 Nov 2008 21:05:08 -0800
Subject: DCB: Add interface to query for the DCB capabilities of an device.
Adds to the netlink interface for Data Center Bridging (DCB), allowing
the DCB capabilities supported by a device to be queried.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ixgbe/ixgbe_dcb_nl.c | 42 +++++++++++++++++++-
include/linux/dcbnl.h | 37 ++++++++++++++++++
include/net/dcbnl.h | 1 +
net/dcb/dcbnl.c | 82 ++++++++++++++++++++++++++++++++++++++++
4 files changed, 161 insertions(+), 1 deletion(-)
(limited to 'include/linux/dcbnl.h')
diff --git a/drivers/net/ixgbe/ixgbe_dcb_nl.c b/drivers/net/ixgbe/ixgbe_dcb_nl.c
index 50bff2af6b0..eb3a6cea1aa 100644
--- a/drivers/net/ixgbe/ixgbe_dcb_nl.c
+++ b/drivers/net/ixgbe/ixgbe_dcb_nl.c
@@ -337,6 +337,45 @@ static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
return ret;
}
+static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+ u8 rval = 0;
+
+ if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
+ switch (capid) {
+ case DCB_CAP_ATTR_PG:
+ *cap = true;
+ break;
+ case DCB_CAP_ATTR_PFC:
+ *cap = true;
+ break;
+ case DCB_CAP_ATTR_UP2TC:
+ *cap = false;
+ break;
+ case DCB_CAP_ATTR_PG_TCS:
+ *cap = 0x80;
+ break;
+ case DCB_CAP_ATTR_PFC_TCS:
+ *cap = 0x80;
+ break;
+ case DCB_CAP_ATTR_GSP:
+ *cap = true;
+ break;
+ case DCB_CAP_ATTR_BCN:
+ *cap = false;
+ break;
+ default:
+ rval = -EINVAL;
+ break;
+ }
+ } else {
+ rval = -EINVAL;
+ }
+
+ return rval;
+}
+
struct dcbnl_rtnl_ops dcbnl_ops = {
.getstate = ixgbe_dcbnl_get_state,
.setstate = ixgbe_dcbnl_set_state,
@@ -351,6 +390,7 @@ struct dcbnl_rtnl_ops dcbnl_ops = {
.getpgbwgcfgrx = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
.setpfccfg = ixgbe_dcbnl_set_pfc_cfg,
.getpfccfg = ixgbe_dcbnl_get_pfc_cfg,
- .setall = ixgbe_dcbnl_set_all
+ .setall = ixgbe_dcbnl_set_all,
+ .getcap = ixgbe_dcbnl_getcap
};
diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h
index 32d32c1ee41..13f0c638a69 100644
--- a/include/linux/dcbnl.h
+++ b/include/linux/dcbnl.h
@@ -43,6 +43,7 @@ struct dcbmsg {
* @DCB_CMD_SET_ALL: apply all changes to the underlying device
* @DCB_CMD_GPERM_HWADDR: get the permanent MAC address of the underlying
* device. Only useful when using bonding.
+ * @DCB_CMD_GCAP: request the DCB capabilities of the device
*/
enum dcbnl_commands {
DCB_CMD_UNDEFINED,
@@ -60,6 +61,7 @@ enum dcbnl_commands {
DCB_CMD_SET_ALL,
DCB_CMD_GPERM_HWADDR,
+ DCB_CMD_GCAP,
__DCB_CMD_ENUM_MAX,
DCB_CMD_MAX = __DCB_CMD_ENUM_MAX - 1,
@@ -78,6 +80,7 @@ enum dcbnl_commands {
* @DCB_ATTR_PG_CFG: priority group configuration (NLA_NESTED)
* @DCB_ATTR_SET_ALL: bool to commit changes to hardware or not (NLA_U8)
* @DCB_ATTR_PERM_HWADDR: MAC address of the physical device (NLA_NESTED)
+ * @DCB_ATTR_CAP: DCB capabilities of the device (NLA_NESTED)
*/
enum dcbnl_attrs {
DCB_ATTR_UNDEFINED,
@@ -90,6 +93,7 @@ enum dcbnl_attrs {
DCB_ATTR_PG_CFG,
DCB_ATTR_SET_ALL,
DCB_ATTR_PERM_HWADDR,
+ DCB_ATTR_CAP,
__DCB_ATTR_ENUM_MAX,
DCB_ATTR_MAX = __DCB_ATTR_ENUM_MAX - 1,
@@ -216,6 +220,39 @@ enum dcbnl_tc_attrs {
DCB_TC_ATTR_PARAM_MAX = __DCB_TC_ATTR_PARAM_ENUM_MAX - 1,
};
+/**
+ * enum dcbnl_cap_attrs - DCB Capability attributes
+ *
+ * @DCB_CAP_ATTR_UNDEFINED: unspecified attribute to catch errors
+ * @DCB_CAP_ATTR_ALL: (NLA_FLAG) all capability parameters
+ * @DCB_CAP_ATTR_PG: (NLA_U8) device supports Priority Groups
+ * @DCB_CAP_ATTR_PFC: (NLA_U8) device supports Priority Flow Control
+ * @DCB_CAP_ATTR_UP2TC: (NLA_U8) device supports user priority to
+ * traffic class mapping
+ * @DCB_CAP_ATTR_PG_TCS: (NLA_U8) bitmap where each bit represents a
+ * number of traffic classes the device
+ * can be configured to use for Priority Groups
+ * @DCB_CAP_ATTR_PFC_TCS: (NLA_U8) bitmap where each bit represents a
+ * number of traffic classes the device can be
+ * configured to use for Priority Flow Control
+ * @DCB_CAP_ATTR_GSP: (NLA_U8) device supports group strict priority
+ * @DCB_CAP_ATTR_BCN: (NLA_U8) device supports Backwards Congestion
+ * Notification
+ */
+enum dcbnl_cap_attrs {
+ DCB_CAP_ATTR_UNDEFINED,
+ DCB_CAP_ATTR_ALL,
+ DCB_CAP_ATTR_PG,
+ DCB_CAP_ATTR_PFC,
+ DCB_CAP_ATTR_UP2TC,
+ DCB_CAP_ATTR_PG_TCS,
+ DCB_CAP_ATTR_PFC_TCS,
+ DCB_CAP_ATTR_GSP,
+ DCB_CAP_ATTR_BCN,
+
+ __DCB_CAP_ATTR_ENUM_MAX,
+ DCB_CAP_ATTR_MAX = __DCB_CAP_ATTR_ENUM_MAX - 1,
+};
/**
* enum dcb_general_attr_values - general DCB attribute values
*
diff --git a/include/net/dcbnl.h b/include/net/dcbnl.h
index 0ef0c5a46d8..183ed040cf4 100644
--- a/include/net/dcbnl.h
+++ b/include/net/dcbnl.h
@@ -39,6 +39,7 @@ struct dcbnl_rtnl_ops {
void (*setpfccfg)(struct net_device *, int, u8);
void (*getpfccfg)(struct net_device *, int, u8 *);
u8 (*setall)(struct net_device *);
+ u8 (*getcap)(struct net_device *, int, u8 *);
};
#endif /* __NET_DCBNL_H__ */
diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c
index 516e8be83d7..de61d64d102 100644
--- a/net/dcb/dcbnl.c
+++ b/net/dcb/dcbnl.c
@@ -61,6 +61,7 @@ static struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = {
[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 priority flow control to User Priority nested attributes */
@@ -107,6 +108,17 @@ static struct nla_policy dcbnl_tc_param_nest[DCB_TC_ATTR_PARAM_MAX + 1] = {
[DCB_TC_ATTR_PARAM_ALL] = {.type = NLA_FLAG},
};
+/* DCB capabilities nested attributes. */
+static struct nla_policy dcbnl_cap_nest[DCB_CAP_ATTR_MAX + 1] = {
+ [DCB_CAP_ATTR_ALL] = {.type = NLA_FLAG},
+ [DCB_CAP_ATTR_PG] = {.type = NLA_U8},
+ [DCB_CAP_ATTR_PFC] = {.type = NLA_U8},
+ [DCB_CAP_ATTR_UP2TC] = {.type = NLA_U8},
+ [DCB_CAP_ATTR_PG_TCS] = {.type = NLA_U8},
+ [DCB_CAP_ATTR_PFC_TCS] = {.type = NLA_U8},
+ [DCB_CAP_ATTR_GSP] = {.type = NLA_U8},
+ [DCB_CAP_ATTR_BCN] = {.type = NLA_U8},
+};
/* standard netlink reply call */
static int dcbnl_reply(u8 value, u8 event, u8 cmd, u8 attr, u32 pid,
@@ -269,6 +281,72 @@ err_out:
return -EINVAL;
}
+static int dcbnl_getcap(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ struct sk_buff *dcbnl_skb;
+ struct nlmsghdr *nlh;
+ struct dcbmsg *dcb;
+ struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest;
+ u8 value;
+ int ret = -EINVAL;
+ int i;
+ int getall = 0;
+
+ if (!tb[DCB_ATTR_CAP] || !netdev->dcbnl_ops->getcap)
+ return ret;
+
+ ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP],
+ dcbnl_cap_nest);
+ if (ret)
+ goto err_out;
+
+ dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!dcbnl_skb)
+ goto err_out;
+
+ nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
+
+ dcb = NLMSG_DATA(nlh);
+ dcb->dcb_family = AF_UNSPEC;
+ dcb->cmd = DCB_CMD_GCAP;
+
+ nest = nla_nest_start(dcbnl_skb, DCB_ATTR_CAP);
+ if (!nest)
+ goto err;
+
+ if (data[DCB_CAP_ATTR_ALL])
+ getall = 1;
+
+ for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) {
+ if (!getall && !data[i])
+ continue;
+
+ if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) {
+ ret = nla_put_u8(dcbnl_skb, i, value);
+
+ if (ret) {
+ nla_nest_cancel(dcbnl_skb, nest);
+ goto err;
+ }
+ }
+ }
+ nla_nest_end(dcbnl_skb, nest);
+
+ nlmsg_end(dcbnl_skb, nlh);
+
+ ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
+ if (ret)
+ goto err;
+
+ return 0;
+nlmsg_failure:
+err:
+ kfree(dcbnl_skb);
+err_out:
+ return -EINVAL;
+}
+
static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlattr **tb,
u32 pid, u32 seq, u16 flags, int dir)
{
@@ -675,6 +753,10 @@ static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
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;
default:
goto errout;
}
--
cgit v1.2.3-70-g09d2
From 33dbabc4a7f7bd72313c73a3c199f31f3900336f Mon Sep 17 00:00:00 2001
From: Alexander Duyck <alexander.h.duyck@intel.com>
Date: Thu, 20 Nov 2008 21:08:19 -0800
Subject: DCB: Add interface to query # of TCs supported by device
Adds interface for Data Center Bridging (DCB) to query (and set if
supported) the number of traffic classes currently supported by the
device for the two (DCB) features: priority groups (PG) and priority
flow control (PFC).
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ixgbe/ixgbe_dcb_nl.c | 33 +++++++++-
include/linux/dcbnl.h | 27 ++++++++
include/net/dcbnl.h | 2 +
net/dcb/dcbnl.c | 132 +++++++++++++++++++++++++++++++++++++++
4 files changed, 193 insertions(+), 1 deletion(-)
(limited to 'include/linux/dcbnl.h')
diff --git a/drivers/net/ixgbe/ixgbe_dcb_nl.c b/drivers/net/ixgbe/ixgbe_dcb_nl.c
index eb3a6cea1aa..5921795f840 100644
--- a/drivers/net/ixgbe/ixgbe_dcb_nl.c
+++ b/drivers/net/ixgbe/ixgbe_dcb_nl.c
@@ -376,6 +376,35 @@ static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
return rval;
}
+static u8 ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+ u8 rval = 0;
+
+ if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
+ switch (tcid) {
+ case DCB_NUMTCS_ATTR_PG:
+ *num = MAX_TRAFFIC_CLASS;
+ break;
+ case DCB_NUMTCS_ATTR_PFC:
+ *num = MAX_TRAFFIC_CLASS;
+ break;
+ default:
+ rval = -EINVAL;
+ break;
+ }
+ } else {
+ rval = -EINVAL;
+ }
+
+ return rval;
+}
+
+static u8 ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
+{
+ return -EINVAL;
+}
+
struct dcbnl_rtnl_ops dcbnl_ops = {
.getstate = ixgbe_dcbnl_get_state,
.setstate = ixgbe_dcbnl_set_state,
@@ -391,6 +420,8 @@ struct dcbnl_rtnl_ops dcbnl_ops = {
.setpfccfg = ixgbe_dcbnl_set_pfc_cfg,
.getpfccfg = ixgbe_dcbnl_get_pfc_cfg,
.setall = ixgbe_dcbnl_set_all,
- .getcap = ixgbe_dcbnl_getcap
+ .getcap = ixgbe_dcbnl_getcap,
+ .getnumtcs = ixgbe_dcbnl_getnumtcs,
+ .setnumtcs = ixgbe_dcbnl_setnumtcs
};
diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h
index 13f0c638a69..1077fba1dad 100644
--- a/include/linux/dcbnl.h
+++ b/include/linux/dcbnl.h
@@ -44,6 +44,8 @@ struct dcbmsg {
* @DCB_CMD_GPERM_HWADDR: get the permanent MAC address of the underlying
* device. Only useful when using bonding.
* @DCB_CMD_GCAP: request the DCB capabilities of the device
+ * @DCB_CMD_GNUMTCS: get the number of traffic classes currently supported
+ * @DCB_CMD_SNUMTCS: set the number of traffic classes
*/
enum dcbnl_commands {
DCB_CMD_UNDEFINED,
@@ -62,6 +64,8 @@ enum dcbnl_commands {
DCB_CMD_SET_ALL,
DCB_CMD_GPERM_HWADDR,
DCB_CMD_GCAP,
+ DCB_CMD_GNUMTCS,
+ DCB_CMD_SNUMTCS,
__DCB_CMD_ENUM_MAX,
DCB_CMD_MAX = __DCB_CMD_ENUM_MAX - 1,
@@ -81,6 +85,7 @@ enum dcbnl_commands {
* @DCB_ATTR_SET_ALL: bool to commit changes to hardware or not (NLA_U8)
* @DCB_ATTR_PERM_HWADDR: MAC address of the physical device (NLA_NESTED)
* @DCB_ATTR_CAP: DCB capabilities of the device (NLA_NESTED)
+ * @DCB_ATTR_NUMTCS: number of traffic classes supported (NLA_NESTED)
*/
enum dcbnl_attrs {
DCB_ATTR_UNDEFINED,
@@ -94,6 +99,7 @@ enum dcbnl_attrs {
DCB_ATTR_SET_ALL,
DCB_ATTR_PERM_HWADDR,
DCB_ATTR_CAP,
+ DCB_ATTR_NUMTCS,
__DCB_ATTR_ENUM_MAX,
DCB_ATTR_MAX = __DCB_ATTR_ENUM_MAX - 1,
@@ -253,6 +259,27 @@ enum dcbnl_cap_attrs {
__DCB_CAP_ATTR_ENUM_MAX,
DCB_CAP_ATTR_MAX = __DCB_CAP_ATTR_ENUM_MAX - 1,
};
+
+/**
+ * enum dcbnl_numtcs_attrs - number of traffic classes
+ *
+ * @DCB_NUMTCS_ATTR_UNDEFINED: unspecified attribute to catch errors
+ * @DCB_NUMTCS_ATTR_ALL: (NLA_FLAG) all traffic class attributes
+ * @DCB_NUMTCS_ATTR_PG: (NLA_U8) number of traffic classes used for
+ * priority groups
+ * @DCB_NUMTCS_ATTR_PFC: (NLA_U8) number of traffic classes which can
+ * support priority flow control
+ */
+enum dcbnl_numtcs_attrs {
+ DCB_NUMTCS_ATTR_UNDEFINED,
+ DCB_NUMTCS_ATTR_ALL,
+ DCB_NUMTCS_ATTR_PG,
+ DCB_NUMTCS_ATTR_PFC,
+
+ __DCB_NUMTCS_ATTR_ENUM_MAX,
+ DCB_NUMTCS_ATTR_MAX = __DCB_NUMTCS_ATTR_ENUM_MAX - 1,
+};
+
/**
* enum dcb_general_attr_values - general DCB attribute values
*
diff --git a/include/net/dcbnl.h b/include/net/dcbnl.h
index 183ed040cf4..f0a65281ea7 100644
--- a/include/net/dcbnl.h
+++ b/include/net/dcbnl.h
@@ -40,6 +40,8 @@ struct dcbnl_rtnl_ops {
void (*getpfccfg)(struct net_device *, int, u8 *);
u8 (*setall)(struct net_device *);
u8 (*getcap)(struct net_device *, int, u8 *);
+ u8 (*getnumtcs)(struct net_device *, int, u8 *);
+ u8 (*setnumtcs)(struct net_device *, int, u8);
};
#endif /* __NET_DCBNL_H__ */
diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c
index de61d64d102..5ff7e3c0c17 100644
--- a/net/dcb/dcbnl.c
+++ b/net/dcb/dcbnl.c
@@ -120,6 +120,13 @@ static struct nla_policy dcbnl_cap_nest[DCB_CAP_ATTR_MAX + 1] = {
[DCB_CAP_ATTR_BCN] = {.type = NLA_U8},
};
+/* DCB capabilities nested attributes. */
+static struct nla_policy dcbnl_numtcs_nest[DCB_NUMTCS_ATTR_MAX + 1] = {
+ [DCB_NUMTCS_ATTR_ALL] = {.type = NLA_FLAG},
+ [DCB_NUMTCS_ATTR_PG] = {.type = NLA_U8},
+ [DCB_NUMTCS_ATTR_PFC] = {.type = NLA_U8},
+};
+
/* standard netlink reply call */
static int dcbnl_reply(u8 value, u8 event, u8 cmd, u8 attr, u32 pid,
u32 seq, u16 flags)
@@ -347,6 +354,123 @@ err_out:
return -EINVAL;
}
+static int dcbnl_getnumtcs(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ struct sk_buff *dcbnl_skb;
+ struct nlmsghdr *nlh;
+ struct dcbmsg *dcb;
+ struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest;
+ u8 value;
+ int ret = -EINVAL;
+ int i;
+ int getall = 0;
+
+ if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->getnumtcs)
+ return ret;
+
+ ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
+ dcbnl_numtcs_nest);
+ if (ret) {
+ ret = -EINVAL;
+ goto err_out;
+ }
+
+ dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!dcbnl_skb) {
+ ret = -EINVAL;
+ goto err_out;
+ }
+
+ nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
+
+ dcb = NLMSG_DATA(nlh);
+ dcb->dcb_family = AF_UNSPEC;
+ dcb->cmd = DCB_CMD_GNUMTCS;
+
+ nest = nla_nest_start(dcbnl_skb, DCB_ATTR_NUMTCS);
+ if (!nest) {
+ ret = -EINVAL;
+ goto err;
+ }
+
+ if (data[DCB_NUMTCS_ATTR_ALL])
+ getall = 1;
+
+ for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
+ if (!getall && !data[i])
+ continue;
+
+ ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value);
+ if (!ret) {
+ ret = nla_put_u8(dcbnl_skb, i, value);
+
+ if (ret) {
+ nla_nest_cancel(dcbnl_skb, nest);
+ ret = -EINVAL;
+ goto err;
+ }
+ } else {
+ goto err;
+ }
+ }
+ nla_nest_end(dcbnl_skb, nest);
+
+ nlmsg_end(dcbnl_skb, nlh);
+
+ ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
+ if (ret) {
+ ret = -EINVAL;
+ goto err;
+ }
+
+ return 0;
+nlmsg_failure:
+err:
+ kfree(dcbnl_skb);
+err_out:
+ return ret;
+}
+
+static int dcbnl_setnumtcs(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1];
+ int ret = -EINVAL;
+ u8 value;
+ int i;
+
+ if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->setstate)
+ return ret;
+
+ ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
+ dcbnl_numtcs_nest);
+
+ if (ret) {
+ ret = -EINVAL;
+ goto err;
+ }
+
+ for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
+ if (data[i] == NULL)
+ continue;
+
+ value = nla_get_u8(data[i]);
+
+ ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value);
+
+ if (ret)
+ goto operr;
+ }
+
+operr:
+ ret = dcbnl_reply(!!ret, RTM_SETDCB, DCB_CMD_SNUMTCS,
+ DCB_ATTR_NUMTCS, pid, seq, flags);
+
+err:
+ return ret;
+}
+
static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlattr **tb,
u32 pid, u32 seq, u16 flags, int dir)
{
@@ -757,6 +881,14 @@ static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
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;
default:
goto errout;
}
--
cgit v1.2.3-70-g09d2
From 0eb3aa9bab20217fb42244ccdcb5bf8a002f504c Mon Sep 17 00:00:00 2001
From: Alexander Duyck <alexander.h.duyck@intel.com>
Date: Thu, 20 Nov 2008 21:09:23 -0800
Subject: DCB: Add interface to query the state of PFC feature.
Adds a netlink interface for Data Center Bridging (DCB) to get and set
the enable state of the Priority Flow Control (PFC) feature.
Primarily, this is a way to turn off PFC in the driver while DCB
remains enabled.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ixgbe/ixgbe_dcb_nl.c | 16 ++++++++++++++-
include/linux/dcbnl.h | 2 ++
include/net/dcbnl.h | 2 ++
net/dcb/dcbnl.c | 43 ++++++++++++++++++++++++++++++++++++++++
4 files changed, 62 insertions(+), 1 deletion(-)
(limited to 'include/linux/dcbnl.h')
diff --git a/drivers/net/ixgbe/ixgbe_dcb_nl.c b/drivers/net/ixgbe/ixgbe_dcb_nl.c
index 5921795f840..dd940a8f935 100644
--- a/drivers/net/ixgbe/ixgbe_dcb_nl.c
+++ b/drivers/net/ixgbe/ixgbe_dcb_nl.c
@@ -405,6 +405,18 @@ static u8 ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
return -EINVAL;
}
+static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+
+ return !!(adapter->flags & IXGBE_FLAG_DCB_ENABLED);
+}
+
+static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
+{
+ return;
+}
+
struct dcbnl_rtnl_ops dcbnl_ops = {
.getstate = ixgbe_dcbnl_get_state,
.setstate = ixgbe_dcbnl_set_state,
@@ -422,6 +434,8 @@ struct dcbnl_rtnl_ops dcbnl_ops = {
.setall = ixgbe_dcbnl_set_all,
.getcap = ixgbe_dcbnl_getcap,
.getnumtcs = ixgbe_dcbnl_getnumtcs,
- .setnumtcs = ixgbe_dcbnl_setnumtcs
+ .setnumtcs = ixgbe_dcbnl_setnumtcs,
+ .getpfcstate = ixgbe_dcbnl_getpfcstate,
+ .setpfcstate = ixgbe_dcbnl_setpfcstate
};
diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h
index 1077fba1dad..6cc4560bc37 100644
--- a/include/linux/dcbnl.h
+++ b/include/linux/dcbnl.h
@@ -66,6 +66,8 @@ enum dcbnl_commands {
DCB_CMD_GCAP,
DCB_CMD_GNUMTCS,
DCB_CMD_SNUMTCS,
+ DCB_CMD_PFC_GSTATE,
+ DCB_CMD_PFC_SSTATE,
__DCB_CMD_ENUM_MAX,
DCB_CMD_MAX = __DCB_CMD_ENUM_MAX - 1,
diff --git a/include/net/dcbnl.h b/include/net/dcbnl.h
index f0a65281ea7..c7d87caf3f9 100644
--- a/include/net/dcbnl.h
+++ b/include/net/dcbnl.h
@@ -42,6 +42,8 @@ struct dcbnl_rtnl_ops {
u8 (*getcap)(struct net_device *, int, u8 *);
u8 (*getnumtcs)(struct net_device *, int, u8 *);
u8 (*setnumtcs)(struct net_device *, int, u8);
+ u8 (*getpfcstate)(struct net_device *);
+ void (*setpfcstate)(struct net_device *, u8);
};
#endif /* __NET_DCBNL_H__ */
diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c
index 5ff7e3c0c17..758419c6f59 100644
--- a/net/dcb/dcbnl.c
+++ b/net/dcb/dcbnl.c
@@ -62,6 +62,7 @@ static struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = {
[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 priority flow control to User Priority nested attributes */
@@ -471,6 +472,40 @@ err:
return ret;
}
+static int dcbnl_getpfcstate(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ int ret = -EINVAL;
+
+ if (!netdev->dcbnl_ops->getpfcstate)
+ return ret;
+
+ ret = dcbnl_reply(netdev->dcbnl_ops->getpfcstate(netdev), RTM_GETDCB,
+ DCB_CMD_PFC_GSTATE, DCB_ATTR_PFC_STATE,
+ pid, seq, flags);
+
+ return ret;
+}
+
+static int dcbnl_setpfcstate(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ int ret = -EINVAL;
+ u8 value;
+
+ if (!tb[DCB_ATTR_PFC_STATE] || !netdev->dcbnl_ops->setpfcstate)
+ return ret;
+
+ value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]);
+
+ netdev->dcbnl_ops->setpfcstate(netdev, value);
+
+ ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SSTATE, DCB_ATTR_PFC_STATE,
+ pid, seq, flags);
+
+ return ret;
+}
+
static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlattr **tb,
u32 pid, u32 seq, u16 flags, int dir)
{
@@ -889,6 +924,14 @@ static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
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;
default:
goto errout;
}
--
cgit v1.2.3-70-g09d2
From 859ee3c43812051e21816c6d6d4cc04fb7ce9b2e Mon Sep 17 00:00:00 2001
From: Alexander Duyck <alexander.h.duyck@intel.com>
Date: Thu, 20 Nov 2008 21:10:23 -0800
Subject: DCB: Add support for DCB BCN
Adds an interface to configure the Backward Congestion Notification
(BCN) feature. In a BCN capabale network, congestion notifications
from congested points out in the network can cause the end station
limit the rate of a given traffic flow.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ixgbe/ixgbe_dcb.h | 27 ++++++
drivers/net/ixgbe/ixgbe_dcb_nl.c | 176 ++++++++++++++++++++++++++++++++++++++-
include/linux/dcbnl.h | 44 +++++++++-
include/net/dcbnl.h | 4 +
net/dcb/dcbnl.c | 174 ++++++++++++++++++++++++++++++++++++--
5 files changed, 416 insertions(+), 9 deletions(-)
(limited to 'include/linux/dcbnl.h')
diff --git a/drivers/net/ixgbe/ixgbe_dcb.h b/drivers/net/ixgbe/ixgbe_dcb.h
index 62dfd243bed..75f6efe1e36 100644
--- a/drivers/net/ixgbe/ixgbe_dcb.h
+++ b/drivers/net/ixgbe/ixgbe_dcb.h
@@ -108,7 +108,34 @@ enum dcb_rx_pba_cfg {
pba_80_48 /* PBA[0-3] each use 80KB, PBA[4-7] each use 48KB */
};
+/*
+ * This structure contains many values encoded as fixed-point
+ * numbers, meaning that some of bits are dedicated to the
+ * magnitude and others to the fraction part. In the comments
+ * this is shown as f=n, where n is the number of fraction bits.
+ * These fraction bits are always the low-order bits. The size
+ * of the magnitude is not specified.
+ */
+struct bcn_config {
+ u32 rp_admin_mode[MAX_TRAFFIC_CLASS]; /* BCN enabled, per TC */
+ u32 bcna_option[2]; /* BCNA Port + MAC Addr */
+ u32 rp_w; /* Derivative Weight, f=3 */
+ u32 rp_gi; /* Increase Gain, f=12 */
+ u32 rp_gd; /* Decrease Gain, f=12 */
+ u32 rp_ru; /* Rate Unit */
+ u32 rp_alpha; /* Max Decrease Factor, f=12 */
+ u32 rp_beta; /* Max Increase Factor, f=12 */
+ u32 rp_ri; /* Initial Rate */
+ u32 rp_td; /* Drift Interval Timer */
+ u32 rp_rd; /* Drift Increase */
+ u32 rp_tmax; /* Severe Congestion Backoff Timer Range */
+ u32 rp_rmin; /* Severe Congestion Restart Rate */
+ u32 rp_wrtt; /* RTT Moving Average Weight */
+};
+
struct ixgbe_dcb_config {
+ struct bcn_config bcn;
+
struct tc_configuration tc_config[MAX_TRAFFIC_CLASS];
u8 bw_percentage[2][MAX_BW_GROUP]; /* One each for Tx/Rx */
diff --git a/drivers/net/ixgbe/ixgbe_dcb_nl.c b/drivers/net/ixgbe/ixgbe_dcb_nl.c
index dd940a8f935..615c2803202 100644
--- a/drivers/net/ixgbe/ixgbe_dcb_nl.c
+++ b/drivers/net/ixgbe/ixgbe_dcb_nl.c
@@ -34,6 +34,7 @@
#define BIT_PFC 0x02
#define BIT_PG_RX 0x04
#define BIT_PG_TX 0x08
+#define BIT_BCN 0x10
int ixgbe_copy_dcb_cfg(struct ixgbe_dcb_config *src_dcb_cfg,
struct ixgbe_dcb_config *dst_dcb_cfg, int tc_max)
@@ -88,6 +89,23 @@ int ixgbe_copy_dcb_cfg(struct ixgbe_dcb_config *src_dcb_cfg,
src_dcb_cfg->tc_config[i - DCB_PFC_UP_ATTR_0].dcb_pfc;
}
+ for (i = DCB_BCN_ATTR_RP_0; i < DCB_BCN_ATTR_RP_ALL; i++) {
+ dst_dcb_cfg->bcn.rp_admin_mode[i - DCB_BCN_ATTR_RP_0] =
+ src_dcb_cfg->bcn.rp_admin_mode[i - DCB_BCN_ATTR_RP_0];
+ }
+ dst_dcb_cfg->bcn.rp_alpha = src_dcb_cfg->bcn.rp_alpha;
+ dst_dcb_cfg->bcn.rp_beta = src_dcb_cfg->bcn.rp_beta;
+ dst_dcb_cfg->bcn.rp_gd = src_dcb_cfg->bcn.rp_gd;
+ dst_dcb_cfg->bcn.rp_gi = src_dcb_cfg->bcn.rp_gi;
+ dst_dcb_cfg->bcn.rp_tmax = src_dcb_cfg->bcn.rp_tmax;
+ dst_dcb_cfg->bcn.rp_td = src_dcb_cfg->bcn.rp_td;
+ dst_dcb_cfg->bcn.rp_rmin = src_dcb_cfg->bcn.rp_rmin;
+ dst_dcb_cfg->bcn.rp_w = src_dcb_cfg->bcn.rp_w;
+ dst_dcb_cfg->bcn.rp_rd = src_dcb_cfg->bcn.rp_rd;
+ dst_dcb_cfg->bcn.rp_ru = src_dcb_cfg->bcn.rp_ru;
+ dst_dcb_cfg->bcn.rp_wrtt = src_dcb_cfg->bcn.rp_wrtt;
+ dst_dcb_cfg->bcn.rp_ri = src_dcb_cfg->bcn.rp_ri;
+
return 0;
}
@@ -313,6 +331,7 @@ static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
struct ixgbe_adapter *adapter = netdev_priv(netdev);
int ret;
+ adapter->dcb_set_bitmap &= ~BIT_BCN; /* no set for BCN */
if (!adapter->dcb_set_bitmap)
return 1;
@@ -417,6 +436,157 @@ static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
return;
}
+static void ixgbe_dcbnl_getbcnrp(struct net_device *netdev, int priority,
+ u8 *setting)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+
+ *setting = adapter->dcb_cfg.bcn.rp_admin_mode[priority];
+}
+
+
+static void ixgbe_dcbnl_getbcncfg(struct net_device *netdev, int enum_index,
+ u32 *setting)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+
+ switch (enum_index) {
+ case DCB_BCN_ATTR_ALPHA:
+ *setting = adapter->dcb_cfg.bcn.rp_alpha;
+ break;
+ case DCB_BCN_ATTR_BETA:
+ *setting = adapter->dcb_cfg.bcn.rp_beta;
+ break;
+ case DCB_BCN_ATTR_GD:
+ *setting = adapter->dcb_cfg.bcn.rp_gd;
+ break;
+ case DCB_BCN_ATTR_GI:
+ *setting = adapter->dcb_cfg.bcn.rp_gi;
+ break;
+ case DCB_BCN_ATTR_TMAX:
+ *setting = adapter->dcb_cfg.bcn.rp_tmax;
+ break;
+ case DCB_BCN_ATTR_TD:
+ *setting = adapter->dcb_cfg.bcn.rp_td;
+ break;
+ case DCB_BCN_ATTR_RMIN:
+ *setting = adapter->dcb_cfg.bcn.rp_rmin;
+ break;
+ case DCB_BCN_ATTR_W:
+ *setting = adapter->dcb_cfg.bcn.rp_w;
+ break;
+ case DCB_BCN_ATTR_RD:
+ *setting = adapter->dcb_cfg.bcn.rp_rd;
+ break;
+ case DCB_BCN_ATTR_RU:
+ *setting = adapter->dcb_cfg.bcn.rp_ru;
+ break;
+ case DCB_BCN_ATTR_WRTT:
+ *setting = adapter->dcb_cfg.bcn.rp_wrtt;
+ break;
+ case DCB_BCN_ATTR_RI:
+ *setting = adapter->dcb_cfg.bcn.rp_ri;
+ break;
+ default:
+ *setting = -1;
+ }
+}
+
+static void ixgbe_dcbnl_setbcnrp(struct net_device *netdev, int priority,
+ u8 setting)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+
+ adapter->temp_dcb_cfg.bcn.rp_admin_mode[priority] = setting;
+
+ if (adapter->temp_dcb_cfg.bcn.rp_admin_mode[priority] !=
+ adapter->dcb_cfg.bcn.rp_admin_mode[priority])
+ adapter->dcb_set_bitmap |= BIT_BCN;
+}
+
+static void ixgbe_dcbnl_setbcncfg(struct net_device *netdev, int enum_index,
+ u32 setting)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+
+ switch (enum_index) {
+ case DCB_BCN_ATTR_ALPHA:
+ adapter->temp_dcb_cfg.bcn.rp_alpha = setting;
+ if (adapter->temp_dcb_cfg.bcn.rp_alpha !=
+ adapter->dcb_cfg.bcn.rp_alpha)
+ adapter->dcb_set_bitmap |= BIT_BCN;
+ break;
+ case DCB_BCN_ATTR_BETA:
+ adapter->temp_dcb_cfg.bcn.rp_beta = setting;
+ if (adapter->temp_dcb_cfg.bcn.rp_beta !=
+ adapter->dcb_cfg.bcn.rp_beta)
+ adapter->dcb_set_bitmap |= BIT_BCN;
+ break;
+ case DCB_BCN_ATTR_GD:
+ adapter->temp_dcb_cfg.bcn.rp_gd = setting;
+ if (adapter->temp_dcb_cfg.bcn.rp_gd !=
+ adapter->dcb_cfg.bcn.rp_gd)
+ adapter->dcb_set_bitmap |= BIT_BCN;
+ break;
+ case DCB_BCN_ATTR_GI:
+ adapter->temp_dcb_cfg.bcn.rp_gi = setting;
+ if (adapter->temp_dcb_cfg.bcn.rp_gi !=
+ adapter->dcb_cfg.bcn.rp_gi)
+ adapter->dcb_set_bitmap |= BIT_BCN;
+ break;
+ case DCB_BCN_ATTR_TMAX:
+ adapter->temp_dcb_cfg.bcn.rp_tmax = setting;
+ if (adapter->temp_dcb_cfg.bcn.rp_tmax !=
+ adapter->dcb_cfg.bcn.rp_tmax)
+ adapter->dcb_set_bitmap |= BIT_BCN;
+ break;
+ case DCB_BCN_ATTR_TD:
+ adapter->temp_dcb_cfg.bcn.rp_td = setting;
+ if (adapter->temp_dcb_cfg.bcn.rp_td !=
+ adapter->dcb_cfg.bcn.rp_td)
+ adapter->dcb_set_bitmap |= BIT_BCN;
+ break;
+ case DCB_BCN_ATTR_RMIN:
+ adapter->temp_dcb_cfg.bcn.rp_rmin = setting;
+ if (adapter->temp_dcb_cfg.bcn.rp_rmin !=
+ adapter->dcb_cfg.bcn.rp_rmin)
+ adapter->dcb_set_bitmap |= BIT_BCN;
+ break;
+ case DCB_BCN_ATTR_W:
+ adapter->temp_dcb_cfg.bcn.rp_w = setting;
+ if (adapter->temp_dcb_cfg.bcn.rp_w !=
+ adapter->dcb_cfg.bcn.rp_w)
+ adapter->dcb_set_bitmap |= BIT_BCN;
+ break;
+ case DCB_BCN_ATTR_RD:
+ adapter->temp_dcb_cfg.bcn.rp_rd = setting;
+ if (adapter->temp_dcb_cfg.bcn.rp_rd !=
+ adapter->dcb_cfg.bcn.rp_rd)
+ adapter->dcb_set_bitmap |= BIT_BCN;
+ break;
+ case DCB_BCN_ATTR_RU:
+ adapter->temp_dcb_cfg.bcn.rp_ru = setting;
+ if (adapter->temp_dcb_cfg.bcn.rp_ru !=
+ adapter->dcb_cfg.bcn.rp_ru)
+ adapter->dcb_set_bitmap |= BIT_BCN;
+ break;
+ case DCB_BCN_ATTR_WRTT:
+ adapter->temp_dcb_cfg.bcn.rp_wrtt = setting;
+ if (adapter->temp_dcb_cfg.bcn.rp_wrtt !=
+ adapter->dcb_cfg.bcn.rp_wrtt)
+ adapter->dcb_set_bitmap |= BIT_BCN;
+ break;
+ case DCB_BCN_ATTR_RI:
+ adapter->temp_dcb_cfg.bcn.rp_ri = setting;
+ if (adapter->temp_dcb_cfg.bcn.rp_ri !=
+ adapter->dcb_cfg.bcn.rp_ri)
+ adapter->dcb_set_bitmap |= BIT_BCN;
+ break;
+ default:
+ break;
+ }
+}
+
struct dcbnl_rtnl_ops dcbnl_ops = {
.getstate = ixgbe_dcbnl_get_state,
.setstate = ixgbe_dcbnl_set_state,
@@ -436,6 +606,10 @@ struct dcbnl_rtnl_ops dcbnl_ops = {
.getnumtcs = ixgbe_dcbnl_getnumtcs,
.setnumtcs = ixgbe_dcbnl_setnumtcs,
.getpfcstate = ixgbe_dcbnl_getpfcstate,
- .setpfcstate = ixgbe_dcbnl_setpfcstate
+ .setpfcstate = ixgbe_dcbnl_setpfcstate,
+ .getbcncfg = ixgbe_dcbnl_getbcncfg,
+ .getbcnrp = ixgbe_dcbnl_getbcnrp,
+ .setbcncfg = ixgbe_dcbnl_setbcncfg,
+ .setbcnrp = ixgbe_dcbnl_setbcnrp
};
diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h
index 6cc4560bc37..e73a61449ad 100644
--- a/include/linux/dcbnl.h
+++ b/include/linux/dcbnl.h
@@ -46,6 +46,8 @@ struct dcbmsg {
* @DCB_CMD_GCAP: request the DCB capabilities of the device
* @DCB_CMD_GNUMTCS: get the number of traffic classes currently supported
* @DCB_CMD_SNUMTCS: set the number of traffic classes
+ * @DCB_CMD_GBCN: set backward congestion notification configuration
+ * @DCB_CMD_SBCN: get backward congestion notification configration.
*/
enum dcbnl_commands {
DCB_CMD_UNDEFINED,
@@ -62,18 +64,24 @@ enum dcbnl_commands {
DCB_CMD_PFC_SCFG,
DCB_CMD_SET_ALL,
+
DCB_CMD_GPERM_HWADDR,
+
DCB_CMD_GCAP,
+
DCB_CMD_GNUMTCS,
DCB_CMD_SNUMTCS,
+
DCB_CMD_PFC_GSTATE,
DCB_CMD_PFC_SSTATE,
+ DCB_CMD_BCN_GCFG,
+ DCB_CMD_BCN_SCFG,
+
__DCB_CMD_ENUM_MAX,
DCB_CMD_MAX = __DCB_CMD_ENUM_MAX - 1,
};
-
/**
* enum dcbnl_attrs - DCB top-level netlink attributes
*
@@ -88,6 +96,7 @@ enum dcbnl_commands {
* @DCB_ATTR_PERM_HWADDR: MAC address of the physical device (NLA_NESTED)
* @DCB_ATTR_CAP: DCB capabilities of the device (NLA_NESTED)
* @DCB_ATTR_NUMTCS: number of traffic classes supported (NLA_NESTED)
+ * @DCB_ATTR_BCN: backward congestion notification configuration (NLA_NESTED)
*/
enum dcbnl_attrs {
DCB_ATTR_UNDEFINED,
@@ -102,6 +111,7 @@ enum dcbnl_attrs {
DCB_ATTR_PERM_HWADDR,
DCB_ATTR_CAP,
DCB_ATTR_NUMTCS,
+ DCB_ATTR_BCN,
__DCB_ATTR_ENUM_MAX,
DCB_ATTR_MAX = __DCB_ATTR_ENUM_MAX - 1,
@@ -282,6 +292,38 @@ enum dcbnl_numtcs_attrs {
DCB_NUMTCS_ATTR_MAX = __DCB_NUMTCS_ATTR_ENUM_MAX - 1,
};
+enum dcbnl_bcn_attrs{
+ DCB_BCN_ATTR_UNDEFINED = 0,
+
+ DCB_BCN_ATTR_RP_0,
+ DCB_BCN_ATTR_RP_1,
+ DCB_BCN_ATTR_RP_2,
+ DCB_BCN_ATTR_RP_3,
+ DCB_BCN_ATTR_RP_4,
+ DCB_BCN_ATTR_RP_5,
+ DCB_BCN_ATTR_RP_6,
+ DCB_BCN_ATTR_RP_7,
+ DCB_BCN_ATTR_RP_ALL,
+
+ DCB_BCN_ATTR_ALPHA,
+ DCB_BCN_ATTR_BETA,
+ DCB_BCN_ATTR_GD,
+ DCB_BCN_ATTR_GI,
+ DCB_BCN_ATTR_TMAX,
+ DCB_BCN_ATTR_TD,
+ DCB_BCN_ATTR_RMIN,
+ DCB_BCN_ATTR_W,
+ DCB_BCN_ATTR_RD,
+ DCB_BCN_ATTR_RU,
+ DCB_BCN_ATTR_WRTT,
+ DCB_BCN_ATTR_RI,
+ DCB_BCN_ATTR_C,
+ DCB_BCN_ATTR_ALL,
+
+ __DCB_BCN_ATTR_ENUM_MAX,
+ DCB_BCN_ATTR_MAX = __DCB_BCN_ATTR_ENUM_MAX - 1,
+};
+
/**
* enum dcb_general_attr_values - general DCB attribute values
*
diff --git a/include/net/dcbnl.h b/include/net/dcbnl.h
index c7d87caf3f9..91e0a3d7faf 100644
--- a/include/net/dcbnl.h
+++ b/include/net/dcbnl.h
@@ -44,6 +44,10 @@ struct dcbnl_rtnl_ops {
u8 (*setnumtcs)(struct net_device *, int, u8);
u8 (*getpfcstate)(struct net_device *);
void (*setpfcstate)(struct net_device *, u8);
+ void (*getbcncfg)(struct net_device *, int, u32 *);
+ void (*setbcncfg)(struct net_device *, int, u32);
+ void (*getbcnrp)(struct net_device *, int, u8 *);
+ void (*setbcnrp)(struct net_device *, int, u8);
};
#endif /* __NET_DCBNL_H__ */
diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c
index 758419c6f59..b2bda3f610d 100644
--- a/net/dcb/dcbnl.c
+++ b/net/dcb/dcbnl.c
@@ -55,14 +55,15 @@ MODULE_LICENSE("GPL");
/* DCB netlink attributes policy */
static struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = {
- [DCB_ATTR_IFNAME] = {.type = NLA_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_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_CAP] = {.type = NLA_NESTED},
+ [DCB_ATTR_PFC_STATE] = {.type = NLA_U8},
+ [DCB_ATTR_BCN] = {.type = NLA_NESTED},
};
/* DCB priority flow control to User Priority nested attributes */
@@ -128,6 +129,33 @@ static struct nla_policy dcbnl_numtcs_nest[DCB_NUMTCS_ATTR_MAX + 1] = {
[DCB_NUMTCS_ATTR_PFC] = {.type = NLA_U8},
};
+/* DCB BCN nested attributes. */
+static struct nla_policy dcbnl_bcn_nest[DCB_BCN_ATTR_MAX + 1] = {
+ [DCB_BCN_ATTR_RP_0] = {.type = NLA_U8},
+ [DCB_BCN_ATTR_RP_1] = {.type = NLA_U8},
+ [DCB_BCN_ATTR_RP_2] = {.type = NLA_U8},
+ [DCB_BCN_ATTR_RP_3] = {.type = NLA_U8},
+ [DCB_BCN_ATTR_RP_4] = {.type = NLA_U8},
+ [DCB_BCN_ATTR_RP_5] = {.type = NLA_U8},
+ [DCB_BCN_ATTR_RP_6] = {.type = NLA_U8},
+ [DCB_BCN_ATTR_RP_7] = {.type = NLA_U8},
+ [DCB_BCN_ATTR_RP_ALL] = {.type = NLA_FLAG},
+ [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},
+};
+
/* standard netlink reply call */
static int dcbnl_reply(u8 value, u8 event, u8 cmd, u8 attr, u32 pid,
u32 seq, u16 flags)
@@ -843,6 +871,130 @@ static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlattr **tb,
return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 1);
}
+static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ struct sk_buff *dcbnl_skb;
+ struct nlmsghdr *nlh;
+ struct dcbmsg *dcb;
+ struct nlattr *bcn_nest;
+ struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1];
+ u8 value_byte;
+ u32 value_integer;
+ int ret = -EINVAL;
+ bool getall = false;
+ int i;
+
+ if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->getbcnrp ||
+ !netdev->dcbnl_ops->getbcncfg)
+ return ret;
+
+ ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX,
+ tb[DCB_ATTR_BCN], dcbnl_bcn_nest);
+
+ if (ret)
+ goto err_out;
+
+ dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!dcbnl_skb)
+ goto err_out;
+
+ nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
+
+ dcb = NLMSG_DATA(nlh);
+ dcb->dcb_family = AF_UNSPEC;
+ dcb->cmd = DCB_CMD_BCN_GCFG;
+
+ bcn_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_BCN);
+ if (!bcn_nest)
+ goto err;
+
+ if (bcn_tb[DCB_BCN_ATTR_ALL])
+ getall = true;
+
+ for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
+ if (!getall && !bcn_tb[i])
+ continue;
+
+ netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0,
+ &value_byte);
+ ret = nla_put_u8(dcbnl_skb, i, value_byte);
+ if (ret)
+ goto err_bcn;
+ }
+
+ for (i = DCB_BCN_ATTR_ALPHA; i <= DCB_BCN_ATTR_RI; i++) {
+ if (!getall && !bcn_tb[i])
+ continue;
+
+ netdev->dcbnl_ops->getbcncfg(netdev, i,
+ &value_integer);
+ ret = nla_put_u32(dcbnl_skb, i, value_integer);
+ if (ret)
+ goto err_bcn;
+ }
+
+ nla_nest_end(dcbnl_skb, bcn_nest);
+
+ nlmsg_end(dcbnl_skb, nlh);
+
+ ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
+ if (ret)
+ goto err;
+
+ return 0;
+
+err_bcn:
+ nla_nest_cancel(dcbnl_skb, bcn_nest);
+nlmsg_failure:
+err:
+ kfree(dcbnl_skb);
+err_out:
+ ret = -EINVAL;
+ return ret;
+}
+
+static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ struct nlattr *data[DCB_BCN_ATTR_MAX + 1];
+ int i;
+ int ret = -EINVAL;
+ u8 value_byte;
+ u32 value_int;
+
+ if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->setbcncfg
+ || !netdev->dcbnl_ops->setbcnrp)
+ return ret;
+
+ ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX,
+ tb[DCB_ATTR_BCN],
+ dcbnl_pfc_up_nest);
+ if (ret)
+ goto err;
+
+ for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
+ if (data[i] == NULL)
+ continue;
+ value_byte = nla_get_u8(data[i]);
+ netdev->dcbnl_ops->setbcnrp(netdev,
+ data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte);
+ }
+
+ for (i = DCB_BCN_ATTR_ALPHA; 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);
+ }
+
+ ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_BCN_SCFG, DCB_ATTR_BCN,
+ pid, seq, flags);
+err:
+ return ret;
+}
+
static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
struct net *net = sock_net(skb->sk);
@@ -891,6 +1043,10 @@ static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
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);
@@ -932,6 +1088,10 @@ static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
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);
+ goto out;
default:
goto errout;
}
--
cgit v1.2.3-70-g09d2
From f4314e815e87b4ab1c9b1115dd5853cd20ca999c Mon Sep 17 00:00:00 2001
From: Don Skidmore <donald.c.skidmore@intel.com>
Date: Sun, 21 Dec 2008 20:10:29 -0800
Subject: net: add DCNA attribute to the BCN interface for DCB
Adds the Backward Congestion Notification Address (BCNA) attribute to the
Backward Congestion Notification (BCN) interface for Data Center Bridging
(DCB), which was missing. Receive the BCNA attribute in the ixgbe driver.
The BCNA attribute is for a switch to inform the endstation about the physical
port identification in order to support BCN on aggregated links.
Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: Eric W Multanen <eric.w.multanen@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
drivers/net/ixgbe/ixgbe_dcb_nl.c | 20 ++++++++++++++++++++
include/linux/dcbnl.h | 2 ++
net/dcb/dcbnl.c | 6 ++++--
3 files changed, 26 insertions(+), 2 deletions(-)
(limited to 'include/linux/dcbnl.h')
diff --git a/drivers/net/ixgbe/ixgbe_dcb_nl.c b/drivers/net/ixgbe/ixgbe_dcb_nl.c
index 7d158a5c545..8ac639d0da0 100644
--- a/drivers/net/ixgbe/ixgbe_dcb_nl.c
+++ b/drivers/net/ixgbe/ixgbe_dcb_nl.c
@@ -93,6 +93,8 @@ int ixgbe_copy_dcb_cfg(struct ixgbe_dcb_config *src_dcb_cfg,
dst_dcb_cfg->bcn.rp_admin_mode[i - DCB_BCN_ATTR_RP_0] =
src_dcb_cfg->bcn.rp_admin_mode[i - DCB_BCN_ATTR_RP_0];
}
+ dst_dcb_cfg->bcn.bcna_option[0] = src_dcb_cfg->bcn.bcna_option[0];
+ dst_dcb_cfg->bcn.bcna_option[1] = src_dcb_cfg->bcn.bcna_option[1];
dst_dcb_cfg->bcn.rp_alpha = src_dcb_cfg->bcn.rp_alpha;
dst_dcb_cfg->bcn.rp_beta = src_dcb_cfg->bcn.rp_beta;
dst_dcb_cfg->bcn.rp_gd = src_dcb_cfg->bcn.rp_gd;
@@ -457,6 +459,12 @@ static void ixgbe_dcbnl_getbcncfg(struct net_device *netdev, int enum_index,
struct ixgbe_adapter *adapter = netdev_priv(netdev);
switch (enum_index) {
+ case DCB_BCN_ATTR_BCNA_0:
+ *setting = adapter->dcb_cfg.bcn.bcna_option[0];
+ break;
+ case DCB_BCN_ATTR_BCNA_1:
+ *setting = adapter->dcb_cfg.bcn.bcna_option[1];
+ break;
case DCB_BCN_ATTR_ALPHA:
*setting = adapter->dcb_cfg.bcn.rp_alpha;
break;
@@ -516,6 +524,18 @@ static void ixgbe_dcbnl_setbcncfg(struct net_device *netdev, int enum_index,
struct ixgbe_adapter *adapter = netdev_priv(netdev);
switch (enum_index) {
+ case DCB_BCN_ATTR_BCNA_0:
+ adapter->temp_dcb_cfg.bcn.bcna_option[0] = setting;
+ if (adapter->temp_dcb_cfg.bcn.bcna_option[0] !=
+ adapter->dcb_cfg.bcn.bcna_option[0])
+ adapter->dcb_set_bitmap |= BIT_BCN;
+ break;
+ case DCB_BCN_ATTR_BCNA_1:
+ adapter->temp_dcb_cfg.bcn.bcna_option[1] = setting;
+ if (adapter->temp_dcb_cfg.bcn.bcna_option[1] !=
+ adapter->dcb_cfg.bcn.bcna_option[1])
+ adapter->dcb_set_bitmap |= BIT_BCN;
+ break;
case DCB_BCN_ATTR_ALPHA:
adapter->temp_dcb_cfg.bcn.rp_alpha = setting;
if (adapter->temp_dcb_cfg.bcn.rp_alpha !=
diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h
index e73a61449ad..b0ef274e003 100644
--- a/include/linux/dcbnl.h
+++ b/include/linux/dcbnl.h
@@ -305,6 +305,8 @@ enum dcbnl_bcn_attrs{
DCB_BCN_ATTR_RP_7,
DCB_BCN_ATTR_RP_ALL,
+ DCB_BCN_ATTR_BCNA_0,
+ DCB_BCN_ATTR_BCNA_1,
DCB_BCN_ATTR_ALPHA,
DCB_BCN_ATTR_BETA,
DCB_BCN_ATTR_GD,
diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c
index fc88fc4d4f6..5dbfe5fdc0d 100644
--- a/net/dcb/dcbnl.c
+++ b/net/dcb/dcbnl.c
@@ -140,6 +140,8 @@ static struct nla_policy dcbnl_bcn_nest[DCB_BCN_ATTR_MAX + 1] = {
[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},
@@ -922,7 +924,7 @@ static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlattr **tb,
goto err_bcn;
}
- for (i = DCB_BCN_ATTR_ALPHA; i <= DCB_BCN_ATTR_RI; i++) {
+ for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
if (!getall && !bcn_tb[i])
continue;
@@ -980,7 +982,7 @@ static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlattr **tb,
data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte);
}
- for (i = DCB_BCN_ATTR_ALPHA; i <= DCB_BCN_ATTR_RI; i++) {
+ 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]);
--
cgit v1.2.3-70-g09d2