-/*-
- * BSD LICENSE
- *
- * Copyright 2016 6WIND S.A.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2016 6WIND S.A.
*/
#ifndef _RTE_NET_PTYPE_H_
extern "C" {
#endif
+#include <rte_ip.h>
+#include <rte_udp.h>
+#include <rte_tcp.h>
+#include <rte_sctp.h>
+
/**
* Structure containing header lengths associated to a packet, filled
* by rte_net_get_ptype().
* @param hdr_lens
* A pointer to a structure where the header lengths will be returned,
* or NULL.
+ * @param layers
+ * List of layers to parse. The function will stop at the first
+ * empty layer. Examples:
+ * - To parse all known layers, use RTE_PTYPE_ALL_MASK.
+ * - To parse only L2 and L3, use RTE_PTYPE_L2_MASK | RTE_PTYPE_L3_MASK
* @return
* The packet type of the packet.
*/
uint32_t rte_net_get_ptype(const struct rte_mbuf *m,
- struct rte_net_hdr_lens *hdr_lens);
+ struct rte_net_hdr_lens *hdr_lens, uint32_t layers);
+
+/**
+ * Prepare pseudo header checksum
+ *
+ * This function prepares pseudo header checksum for TSO and non-TSO tcp/udp in
+ * provided mbufs packet data and based on the requested offload flags.
+ *
+ * - for non-TSO tcp/udp packets full pseudo-header checksum is counted and set
+ * in packet data,
+ * - for TSO the IP payload length is not included in pseudo header.
+ *
+ * This function expects that used headers are in the first data segment of
+ * mbuf, are not fragmented and can be safely modified.
+ *
+ * @param m
+ * The packet mbuf to be fixed.
+ * @param ol_flags
+ * TX offloads flags to use with this packet.
+ * @return
+ * 0 if checksum is initialized properly
+ */
+static inline int
+rte_net_intel_cksum_flags_prepare(struct rte_mbuf *m, uint64_t ol_flags)
+{
+ struct ipv4_hdr *ipv4_hdr;
+ struct ipv6_hdr *ipv6_hdr;
+ struct tcp_hdr *tcp_hdr;
+ struct udp_hdr *udp_hdr;
+ uint64_t inner_l3_offset = m->l2_len;
+
+ if ((ol_flags & PKT_TX_OUTER_IP_CKSUM) ||
+ (ol_flags & PKT_TX_OUTER_IPV6))
+ inner_l3_offset += m->outer_l2_len + m->outer_l3_len;
+
+ if ((ol_flags & PKT_TX_UDP_CKSUM) == PKT_TX_UDP_CKSUM) {
+ if (ol_flags & PKT_TX_IPV4) {
+ ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct ipv4_hdr *,
+ inner_l3_offset);
+
+ if (ol_flags & PKT_TX_IP_CKSUM)
+ ipv4_hdr->hdr_checksum = 0;
+
+ udp_hdr = (struct udp_hdr *)((char *)ipv4_hdr +
+ m->l3_len);
+ udp_hdr->dgram_cksum = rte_ipv4_phdr_cksum(ipv4_hdr,
+ ol_flags);
+ } else {
+ ipv6_hdr = rte_pktmbuf_mtod_offset(m, struct ipv6_hdr *,
+ inner_l3_offset);
+ /* non-TSO udp */
+ udp_hdr = rte_pktmbuf_mtod_offset(m, struct udp_hdr *,
+ inner_l3_offset + m->l3_len);
+ udp_hdr->dgram_cksum = rte_ipv6_phdr_cksum(ipv6_hdr,
+ ol_flags);
+ }
+ } else if ((ol_flags & PKT_TX_TCP_CKSUM) ||
+ (ol_flags & PKT_TX_TCP_SEG)) {
+ if (ol_flags & PKT_TX_IPV4) {
+ ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct ipv4_hdr *,
+ inner_l3_offset);
+
+ if (ol_flags & PKT_TX_IP_CKSUM)
+ ipv4_hdr->hdr_checksum = 0;
+
+ /* non-TSO tcp or TSO */
+ tcp_hdr = (struct tcp_hdr *)((char *)ipv4_hdr +
+ m->l3_len);
+ tcp_hdr->cksum = rte_ipv4_phdr_cksum(ipv4_hdr,
+ ol_flags);
+ } else {
+ ipv6_hdr = rte_pktmbuf_mtod_offset(m, struct ipv6_hdr *,
+ inner_l3_offset);
+ /* non-TSO tcp or TSO */
+ tcp_hdr = rte_pktmbuf_mtod_offset(m, struct tcp_hdr *,
+ inner_l3_offset + m->l3_len);
+ tcp_hdr->cksum = rte_ipv6_phdr_cksum(ipv6_hdr,
+ ol_flags);
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * Prepare pseudo header checksum
+ *
+ * This function prepares pseudo header checksum for TSO and non-TSO tcp/udp in
+ * provided mbufs packet data.
+ *
+ * - for non-TSO tcp/udp packets full pseudo-header checksum is counted and set
+ * in packet data,
+ * - for TSO the IP payload length is not included in pseudo header.
+ *
+ * This function expects that used headers are in the first data segment of
+ * mbuf, are not fragmented and can be safely modified.
+ *
+ * @param m
+ * The packet mbuf to be fixed.
+ * @return
+ * 0 if checksum is initialized properly
+ */
+static inline int
+rte_net_intel_cksum_prepare(struct rte_mbuf *m)
+{
+ return rte_net_intel_cksum_flags_prepare(m, m->ol_flags);
+}
#ifdef __cplusplus
}
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