/* SPDX-License-Identifier: BSD-3-Clause
*
- * Copyright (c) 2018 Solarflare Communications Inc.
- * All rights reserved.
+ * Copyright(c) 2019-2021 Xilinx, Inc.
+ * Copyright(c) 2018-2019 Solarflare Communications Inc.
*
* This software was jointly developed between OKTET Labs (under contract
* for Solarflare) and Solarflare Communications, Inc.
*/
+#ifndef _SFC_TSO_H
+#define _SFC_TSO_H
+
+#include <rte_udp.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_TSO_OPT_DESCS_NUM 2
+#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_TSO_HDR_DESCS_NUM 1
+#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 rte_ipv4_hdr *ip_hdrp;
+ uint16_t ipid;
+
+ ip_hdrp = (const struct rte_ipv4_hdr *)(pkt_hdrp + ip_hdr_off);
+ rte_memcpy(&ipid, &ip_hdrp->packet_id, sizeof(ipid));
+
+ return rte_be_to_cpu_16(ipid);
+}
+
+static inline void
+sfc_tso_outer_udp_fix_len(const struct rte_mbuf *m, uint8_t *tsoh)
+{
+ rte_be16_t len = rte_cpu_to_be_16(m->l2_len + m->l3_len + m->l4_len +
+ m->tso_segsz);
+
+ rte_memcpy(tsoh + m->outer_l2_len + m->outer_l3_len +
+ offsetof(struct rte_udp_hdr, dgram_len),
+ &len, sizeof(len));
+}
+
+static inline void
+sfc_tso_innermost_ip_fix_len(const struct rte_mbuf *m, uint8_t *tsoh,
+ size_t iph_ofst)
+{
+ size_t ip_payload_len = m->l4_len + m->tso_segsz;
+ size_t field_ofst;
+ rte_be16_t len;
+
+ if (m->ol_flags & RTE_MBUF_F_TX_IPV4) {
+ field_ofst = offsetof(struct rte_ipv4_hdr, total_length);
+ len = rte_cpu_to_be_16(m->l3_len + ip_payload_len);
+ } else {
+ field_ofst = offsetof(struct rte_ipv6_hdr, payload_len);
+ len = rte_cpu_to_be_16(ip_payload_len);
+ }
+
+ rte_memcpy(tsoh + iph_ofst + field_ofst, &len, sizeof(len));
+}
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 */