net: Add ndo_{set|get}_vf_port support for enic dynamic vnics

Add enic ndo_{set|get}_vf_port ops to support setting/getting
port-profile for enic dynamic devices.  Enic dynamic devices are just like
normal enic eth devices except dynamic enics require an extra configuration
step to assign a port-profile identifier to the interface before the
interface is useable.  Once a port-profile is assigned, link comes up on the
interface and is ready for I/O.  The port-profile is used to configure the
network port assigned to the interface.  The network port configuration
includes VLAN membership, QoS policies, and port security settings typical
of a data center network.

A dynamic enic initially has a zero-mac address.  Before a port-profile is
assigned, a valid non-zero unicast mac address should be assign to the
dynamic enic interface.

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: Roopa Prabhu <roprabhu@cisco.com>

1 files changed, 73 insertions, 0 deletions

diff --git a/drivers/net/enic/vnic_vic.c b/drivers/net/enic/vnic_vic.c
new file mode 100644
index 0000000..d769772
--- /dev/null
+++ b/drivers/net/enic/vnic_vic.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2010 Cisco Systems, Inc.  All rights reserved.
+ *
+ * This program is free software; you may redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+
+#include "vnic_vic.h"
+
+struct vic_provinfo *vic_provinfo_alloc(gfp_t flags, u8 *oui, u8 type)
+{
+	struct vic_provinfo *vp = kzalloc(VIC_PROVINFO_MAX_DATA, flags);
+
+	if (!vp || !oui)
+		return NULL;
+
+	memcpy(vp->oui, oui, sizeof(vp->oui));
+	vp->type = type;
+	vp->length = htonl(sizeof(vp->num_tlvs));
+
+	return vp;
+}
+
+void vic_provinfo_free(struct vic_provinfo *vp)
+{
+	kfree(vp);
+}
+
+int vic_provinfo_add_tlv(struct vic_provinfo *vp, u16 type, u16 length,
+	void *value)
+{
+	struct vic_provinfo_tlv *tlv;
+
+	if (!vp || !value)
+		return -EINVAL;
+
+	if (ntohl(vp->length) + sizeof(*tlv) + length >
+		VIC_PROVINFO_MAX_TLV_DATA)
+		return -ENOMEM;
+
+	tlv = (struct vic_provinfo_tlv *)((u8 *)vp->tlv +
+		ntohl(vp->length) - sizeof(vp->num_tlvs));
+
+	tlv->type = htons(type);
+	tlv->length = htons(length);
+	memcpy(tlv->value, value, length);
+
+	vp->num_tlvs = htonl(ntohl(vp->num_tlvs) + 1);
+	vp->length = htonl(ntohl(vp->length) + sizeof(*tlv) + length);
+
+	return 0;
+}
+
+size_t vic_provinfo_size(struct vic_provinfo *vp)
+{
+	return vp ?  ntohl(vp->length) + sizeof(*vp) - sizeof(vp->num_tlvs) : 0;
+}