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-rw-r--r--include/net/tso.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/include/net/tso.h b/include/net/tso.h
new file mode 100644
index 0000000000..e7e157ae05
--- /dev/null
+++ b/include/net/tso.h
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _TSO_H
+#define _TSO_H
+
+#include <linux/skbuff.h>
+#include <net/ip.h>
+
+#define TSO_HEADER_SIZE 256
+
+struct tso_t {
+ int next_frag_idx;
+ int size;
+ void *data;
+ u16 ip_id;
+ u8 tlen; /* transport header len */
+ bool ipv6;
+ u32 tcp_seq;
+};
+
+/* Calculate the worst case buffer count */
+static inline int tso_count_descs(const struct sk_buff *skb)
+{
+ return skb_shinfo(skb)->gso_segs * 2 + skb_shinfo(skb)->nr_frags;
+}
+
+void tso_build_hdr(const struct sk_buff *skb, char *hdr, struct tso_t *tso,
+ int size, bool is_last);
+void tso_build_data(const struct sk_buff *skb, struct tso_t *tso, int size);
+int tso_start(struct sk_buff *skb, struct tso_t *tso);
+
+#endif /* _TSO_H */