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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 18:24:20 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 18:24:20 +0000
commit483eb2f56657e8e7f419ab1a4fab8dce9ade8609 (patch)
treee5d88d25d870d5dedacb6bbdbe2a966086a0a5cf /src/spdk/dpdk/lib/librte_net/rte_net.h
parentInitial commit. (diff)
downloadceph-upstream.tar.xz
ceph-upstream.zip
Adding upstream version 14.2.21.upstream/14.2.21upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/spdk/dpdk/lib/librte_net/rte_net.h')
-rw-r--r--src/spdk/dpdk/lib/librte_net/rte_net.h203
1 files changed, 203 insertions, 0 deletions
diff --git a/src/spdk/dpdk/lib/librte_net/rte_net.h b/src/spdk/dpdk/lib/librte_net/rte_net.h
new file mode 100644
index 00000000..b6ab6e1d
--- /dev/null
+++ b/src/spdk/dpdk/lib/librte_net/rte_net.h
@@ -0,0 +1,203 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2016 6WIND S.A.
+ */
+
+#ifndef _RTE_NET_PTYPE_H_
+#define _RTE_NET_PTYPE_H_
+
+#ifdef __cplusplus
+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().
+ */
+struct rte_net_hdr_lens {
+ uint8_t l2_len;
+ uint8_t l3_len;
+ uint8_t l4_len;
+ uint8_t tunnel_len;
+ uint8_t inner_l2_len;
+ uint8_t inner_l3_len;
+ 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.
+ *
+ * This function parses the network headers in mbuf data and return its
+ * packet type.
+ *
+ * If it is provided by the user, it also fills a rte_net_hdr_lens
+ * structure that contains the lengths of the parsed network
+ * headers. Each length field is valid only if the associated packet
+ * type is set. For instance, hdr_lens->l2_len is valid only if
+ * (retval & RTE_PTYPE_L2_MASK) != RTE_PTYPE_UNKNOWN.
+ *
+ * Supported packet types are:
+ * L2: Ether, Vlan, QinQ
+ * L3: IPv4, IPv6
+ * L4: TCP, UDP, SCTP
+ * Tunnels: IPv4, IPv6, Gre, Nvgre
+ *
+ * @param m
+ * The packet mbuf to be parsed.
+ * @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, 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
+}
+#endif
+
+
+#endif /* _RTE_NET_PTYPE_H_ */