1 files changed, 48 insertions, 0 deletions
diff --git a/src/seastar/dpdk/drivers/net/sfc/sfc_tso.h b/src/seastar/dpdk/drivers/net/sfc/sfc_tso.h
new file mode 100644
index 000000000..8ecefdfd2
--- /dev/null
+++ b/src/seastar/dpdk/drivers/net/sfc/sfc_tso.h
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 2018 Solarflare Communications Inc.
+ * All rights reserved.
+ *
+ * This software was jointly developed between OKTET Labs (under contract
+ * for Solarflare) and Solarflare Communications, Inc.
+ */
+
+#ifndef _SFC_TSO_H
+#define _SFC_TSO_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Standard TSO header length */
+#define SFC_TSOH_STD_LEN	256
+
+/** The number of TSO option descriptors that precede the packet descriptors */
+#define SFC_EF10_TSO_OPT_DESCS_NUM	2
+
+/**
+ * The number of DMA descriptors for TSO header that may or may not precede the
+ * packet's payload descriptors
+ */
+#define SFC_EF10_TSO_HDR_DESCS_NUM	1
+
+static inline uint16_t
+sfc_tso_ip4_get_ipid(const uint8_t *pkt_hdrp, size_t ip_hdr_off)
+{
+	const struct ipv4_hdr *ip_hdrp;
+	uint16_t ipid;
+
+	ip_hdrp = (const struct ipv4_hdr *)(pkt_hdrp + ip_hdr_off);
+	rte_memcpy(&ipid, &ip_hdrp->packet_id, sizeof(ipid));
+
+	return rte_be_to_cpu_16(ipid);
+}
+
+unsigned int sfc_tso_prepare_header(uint8_t *tsoh, size_t header_len,
+				    struct rte_mbuf **in_seg, size_t *in_off);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  /* _SFC_TSO_H */