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authorYotam Gigi <yotamg@mellanox.com>2017-02-01 15:30:02 +0200
committerDavid S. Miller <davem@davemloft.net>2017-02-03 15:16:45 -0500
commit1ce8460496c05379c66edc178c3c55ca4e953044 (patch)
treeb20cd3585da85f00946feb48549d5cdc7c87e2b5 /include/net/ife.h
parent1d5e7c859e81a66674d194c346119d154d31e9dc (diff)
net: Introduce ife encapsulation module
This module is responsible for the ife encapsulation protocol encode/decode logics. That module can: - ife_encode: encode skb and reserve space for the ife meta header - ife_decode: decode skb and extract the meta header size - ife_tlv_meta_encode - encodes one tlv entry into the reserved ife header space. - ife_tlv_meta_decode - decodes one tlv entry from the packet - ife_tlv_meta_next - advance to the next tlv Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Yotam Gigi <yotamg@mellanox.com> Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Roman Mashak <mrv@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/ife.h')
-rw-r--r--include/net/ife.h51
1 files changed, 51 insertions, 0 deletions
diff --git a/include/net/ife.h b/include/net/ife.h
new file mode 100644
index 000000000000..2d87d6898b0a
--- /dev/null
+++ b/include/net/ife.h
@@ -0,0 +1,51 @@
+#ifndef __NET_IFE_H
+#define __NET_IFE_H
+
+#include <linux/etherdevice.h>
+#include <linux/rtnetlink.h>
+#include <linux/module.h>
+#include <uapi/linux/ife.h>
+
+#if IS_ENABLED(CONFIG_NET_IFE)
+
+void *ife_encode(struct sk_buff *skb, u16 metalen);
+void *ife_decode(struct sk_buff *skb, u16 *metalen);
+
+void *ife_tlv_meta_decode(void *skbdata, u16 *attrtype, u16 *dlen, u16 *totlen);
+int ife_tlv_meta_encode(void *skbdata, u16 attrtype, u16 dlen,
+ const void *dval);
+
+void *ife_tlv_meta_next(void *skbdata);
+
+#else
+
+static inline void *ife_encode(struct sk_buff *skb, u16 metalen)
+{
+ return NULL;
+}
+
+static inline void *ife_decode(struct sk_buff *skb, u16 *metalen)
+{
+ return NULL;
+}
+
+static inline void *ife_tlv_meta_decode(void *skbdata, u16 *attrtype, u16 *dlen,
+ u16 *totlen)
+{
+ return NULL;
+}
+
+static inline int ife_tlv_meta_encode(void *skbdata, u16 attrtype, u16 dlen,
+ const void *dval)
+{
+ return 0;
+}
+
+static inline void *ife_tlv_meta_next(void *skbdata)
+{
+ return NULL;
+}
+
+#endif
+
+#endif /* __NET_IFE_H */