/* SPDX-License-Identifier: BSD-3-Clause
*
- * Copyright (c) 2016-2018 Solarflare Communications Inc.
- * All rights reserved.
+ * Copyright(c) 2019-2020 Xilinx, Inc.
+ * Copyright(c) 2016-2019 Solarflare Communications Inc.
*
* This software was jointly developed between OKTET Labs (under contract
* for Solarflare) and Solarflare Communications, Inc.
unsigned int *pkt_descs, size_t *pkt_len)
{
uint8_t *tsoh;
- const struct tcp_hdr *th;
+ const struct rte_tcp_hdr *th;
efsys_dma_addr_t header_paddr;
- uint16_t packet_id;
+ uint16_t packet_id = 0;
uint32_t sent_seq;
struct rte_mbuf *m = *in_seg;
size_t nh_off = m->l2_len; /* IP header offset */
size_t tcph_off = m->l2_len + m->l3_len; /* TCP header offset */
size_t header_len = m->l2_len + m->l3_len + m->l4_len;
- const efx_nic_cfg_t *encp = efx_nic_cfg_get(txq->evq->sa->nic);
- idx += SFC_TSO_OPT_DESCS_NUM;
-
- /*
- * The TCP header must start at most 208 bytes into the frame.
- * If it starts later than this then the NIC won't realise
- * it's a TCP packet and TSO edits won't be applied
- */
- if (unlikely(tcph_off > encp->enc_tx_tso_tcp_header_offset_limit))
- return EMSGSIZE;
+ idx += SFC_EF10_TSO_OPT_DESCS_NUM;
header_paddr = rte_pktmbuf_iova(m);
/*
* Discard a packet if header linearization is needed but
* the header is too big.
+ * Duplicate Tx prepare check here to avoid spoil of
+ * memory if Tx prepare is skipped.
*/
if (unlikely(header_len > SFC_TSOH_STD_LEN))
return EMSGSIZE;
tsoh = rte_pktmbuf_mtod(m, uint8_t *);
}
- /* Handle IP header */
- if (m->ol_flags & PKT_TX_IPV4) {
- const struct ipv4_hdr *iphe4;
+ /*
+ * 8000-series EF10 hardware requires that innermost IP length
+ * be greater than or equal to the value which each segment is
+ * supposed to have; otherwise, TCP checksum will be incorrect.
+ */
+ sfc_tso_innermost_ip_fix_len(m, tsoh, nh_off);
- iphe4 = (const struct ipv4_hdr *)(tsoh + nh_off);
- rte_memcpy(&packet_id, &iphe4->packet_id, sizeof(uint16_t));
- packet_id = rte_be_to_cpu_16(packet_id);
- } else if (m->ol_flags & PKT_TX_IPV6) {
- packet_id = 0;
- } else {
- return EINVAL;
- }
+ /*
+ * Handle IP header. Tx prepare has debug-only checks that offload flags
+ * are correctly filled in in TSO mbuf. Use zero IPID if there is no
+ * IPv4 flag. If the packet is still IPv4, HW will simply start from
+ * zero IPID.
+ */
+ if (m->ol_flags & PKT_TX_IPV4)
+ packet_id = sfc_tso_ip4_get_ipid(tsoh, nh_off);
/* Handle TCP header */
- th = (const struct tcp_hdr *)(tsoh + tcph_off);
+ th = (const struct rte_tcp_hdr *)(tsoh + tcph_off);
rte_memcpy(&sent_seq, &th->sent_seq, sizeof(uint32_t));
sent_seq = rte_be_to_cpu_32(sent_seq);