Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / net / ethernet / cisco / enic / vnic_vic.c

diff --git a/kernel/drivers/net/ethernet/cisco/enic/vnic_vic.c b/kernel/drivers/net/ethernet/cisco/enic/vnic_vic.c
new file mode 100644 (file)
index 0000000..24ef8cd
--- /dev/null
+++ b/kernel/drivers/net/ethernet/cisco/enic/vnic_vic.c
@@ -0,0 +1,79 @@
+/*
+ * 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, const u8 *oui,
+       const u8 type)
+{
+       struct vic_provinfo *vp;
+
+       if (!oui)
+               return NULL;
+
+       vp = kzalloc(VIC_PROVINFO_MAX_DATA, flags);
+       if (!vp)
+               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,
+       const void *value)
+{
+       struct vic_provinfo_tlv *tlv;
+
+       if (!vp || !value)
+               return -EINVAL;
+
+       if (ntohl(vp->length) + offsetof(struct vic_provinfo_tlv, value) +
+               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) +
+               offsetof(struct vic_provinfo_tlv, value) + length);
+
+       return 0;
+}
+
+size_t vic_provinfo_size(struct vic_provinfo *vp)
+{
+       return vp ?  ntohl(vp->length) + sizeof(*vp) - sizeof(vp->num_tlvs) : 0;
+}