-/*-
- * 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_
uint8_t inner_l4_len;
};
+/**
+ * Skip IPv6 header extensions.
+ *
+ * This function skips all IPv6 extensions, returning size of
+ * complete header including options and final protocol value.
+ *
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * @param proto
+ * Protocol field of IPv6 header.
+ * @param m
+ * The packet mbuf to be parsed.
+ * @param off
+ * On input, must contain the offset to the first byte following
+ * IPv6 header, on output, contains offset to the first byte
+ * of next layer (after any IPv6 extension header)
+ * @param frag
+ * Contains 1 in output if packet is an IPv6 fragment.
+ * @return
+ * Protocol that follows IPv6 header.
+ * -1 if an error occurs during mbuf parsing.
+ */
+int __rte_experimental
+rte_net_skip_ip6_ext(uint16_t proto, const struct rte_mbuf *m, uint32_t *off,
+ int *frag);
+
/**
* Parse an Ethernet packet to get its packet type.
*
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;
+ struct rte_ipv4_hdr *ipv4_hdr;
+ struct rte_ipv6_hdr *ipv6_hdr;
+ struct rte_tcp_hdr *tcp_hdr;
+ struct rte_udp_hdr *udp_hdr;
uint64_t inner_l3_offset = m->l2_len;
- if (ol_flags & PKT_TX_OUTER_IP_CKSUM)
+#ifdef RTE_LIBRTE_ETHDEV_DEBUG
+ /*
+ * Does packet set any of available offloads?
+ * Mainly it is required to avoid fragmented headers check if
+ * no offloads are requested.
+ */
+ if (!(ol_flags & PKT_TX_OFFLOAD_MASK))
+ return 0;
+#endif
+
+ 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);
+#ifdef RTE_LIBRTE_ETHDEV_DEBUG
+ /*
+ * Check if headers are fragmented.
+ * The check could be less strict depending on which offloads are
+ * requested and headers to be used, but let's keep it simple.
+ */
+ if (unlikely(rte_pktmbuf_data_len(m) <
+ inner_l3_offset + m->l3_len + m->l4_len))
+ return -ENOTSUP;
+#endif
- if (ol_flags & PKT_TX_IP_CKSUM)
- ipv4_hdr->hdr_checksum = 0;
+ if (ol_flags & PKT_TX_IPV4) {
+ ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct rte_ipv4_hdr *,
+ inner_l3_offset);
- udp_hdr = (struct udp_hdr *)((char *)ipv4_hdr +
+ if (ol_flags & PKT_TX_IP_CKSUM)
+ ipv4_hdr->hdr_checksum = 0;
+ }
+
+ if ((ol_flags & PKT_TX_UDP_CKSUM) == PKT_TX_UDP_CKSUM) {
+ if (ol_flags & PKT_TX_IPV4) {
+ udp_hdr = (struct rte_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);
+ ipv6_hdr = rte_pktmbuf_mtod_offset(m,
+ struct rte_ipv6_hdr *, inner_l3_offset);
/* non-TSO udp */
- udp_hdr = rte_pktmbuf_mtod_offset(m, struct udp_hdr *,
+ udp_hdr = rte_pktmbuf_mtod_offset(m,
+ struct rte_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 +
+ tcp_hdr = (struct rte_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);
+ ipv6_hdr = rte_pktmbuf_mtod_offset(m,
+ struct rte_ipv6_hdr *, inner_l3_offset);
/* non-TSO tcp or TSO */
- tcp_hdr = rte_pktmbuf_mtod_offset(m, struct tcp_hdr *,
+ tcp_hdr = rte_pktmbuf_mtod_offset(m,
+ struct rte_tcp_hdr *,
inner_l3_offset + m->l3_len);
tcp_hdr->cksum = rte_ipv6_phdr_cksum(ipv6_hdr,
ol_flags);
git.droids-corp.org / dpdk.git / blobdiff