From 6241b6259b16aa390ff4bf50f520685b3801200b Mon Sep 17 00:00:00 2001
From: Shmulik Ravid <shmulikr@broadcom.com>
Date: Thu, 30 Dec 2010 06:26:48 +0000
Subject: dcbnl: adding DCBX engine capability
Adding an optional DCBX capability and a pair for get-set routines for
setting the device DCBX mode. The DCBX capability is a bit field of
supported attributes. The user is expected to set the DCBX mode with a
subset of the advertised attributes.
This patch is dependent on the following patches:
[net-next-2.6 PATCH 1/3] dcbnl: add support for ieee8021Qaz attributes
[net-next-2.6 PATCH 2/3] dcbnl: add appliction tlv handlers
[net-next-2.6 PATCH 3/3] net_dcb: add application notifiers
Signed-off-by: Shmulik Ravid <shmulikr@broadcom.com>
Acked-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/dcb/dcbnl.c | 43 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 43 insertions(+)
(limited to 'net/dcb')
diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c
index 69144125fc4f..8f83ad859d9b 100644
--- a/net/dcb/dcbnl.c
+++ b/net/dcb/dcbnl.c
@@ -68,6 +68,7 @@ static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = {
[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 priority flow control to User Priority nested attributes */
@@ -124,6 +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. */
@@ -1271,6 +1273,39 @@ nlmsg_failure:
return -1;
}
+/* DCBX configuration */
+static int dcbnl_getdcbx(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ int ret = -EINVAL;
+
+ if (!netdev->dcbnl_ops->getdcbx)
+ return ret;
+
+ ret = dcbnl_reply(netdev->dcbnl_ops->getdcbx(netdev), RTM_GETDCB,
+ DCB_CMD_GDCBX, DCB_ATTR_DCBX, pid, seq, flags);
+
+ return ret;
+}
+
+static int dcbnl_setdcbx(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ int ret = -EINVAL;
+ u8 value;
+
+ if (!tb[DCB_ATTR_DCBX] || !netdev->dcbnl_ops->setdcbx)
+ return ret;
+
+ value = nla_get_u8(tb[DCB_ATTR_DCBX]);
+
+ ret = dcbnl_reply(netdev->dcbnl_ops->setdcbx(netdev, value),
+ RTM_SETDCB, DCB_CMD_SDCBX, DCB_ATTR_DCBX,
+ pid, seq, flags);
+
+ return ret;
+}
+
static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
struct net *net = sock_net(skb->sk);
@@ -1384,6 +1419,14 @@ static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
ret = dcbnl_ieee_get(netdev, tb, pid, nlh->nlmsg_seq,
nlh->nlmsg_flags);
goto out;
+ case DCB_CMD_GDCBX:
+ ret = dcbnl_getdcbx(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_SDCBX:
+ ret = dcbnl_setdcbx(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
default:
goto errout;
}
--
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