net/sfc: support API to negotiate delivery of Rx metadata

[dpdk.git] / drivers / net / sfc / sfc_tso.h

diff --git a/drivers/net/sfc/sfc_tso.h b/drivers/net/sfc/sfc_tso.h
index f89aef0..f081e85 100644 (file)
--- a/drivers/net/sfc/sfc_tso.h
+++ b/drivers/net/sfc/sfc_tso.h
@@ -1,7 +1,7 @@
 /* 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.
@@ -10,6 +10,8 @@
 #ifndef _SFC_TSO_H
 #define _SFC_TSO_H
 
+#include <rte_udp.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -18,13 +20,55 @@ extern "C" {
 #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 & PKT_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);