a7c528e5d7
Add 'rte_' prefix to structures: - rename struct ipv4_hdr as struct rte_ipv4_hdr. - rename struct ipv6_hdr as struct rte_ipv6_hdr. Signed-off-by: Olivier Matz <olivier.matz@6wind.com> Reviewed-by: Stephen Hemminger <stephen@networkplumber.org> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com> Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
85 lines
1.8 KiB
C
85 lines
1.8 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2018 Intel Corporation
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*/
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#ifndef _IPH_H_
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#define _IPH_H_
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/**
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* @file iph.h
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* Contains functions/structures/macros to manipulate IPv4/IPv6 headers
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* used internally by ipsec library.
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*/
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/*
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* Move preceding (L3) headers down to remove ESP header and IV.
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*/
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static inline void
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remove_esph(char *np, char *op, uint32_t hlen)
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{
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uint32_t i;
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for (i = hlen; i-- != 0; np[i] = op[i])
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;
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}
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/*
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* Move preceding (L3) headers up to free space for ESP header and IV.
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*/
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static inline void
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insert_esph(char *np, char *op, uint32_t hlen)
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{
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uint32_t i;
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for (i = 0; i != hlen; i++)
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np[i] = op[i];
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}
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/* update original ip header fields for transport case */
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static inline int
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update_trs_l3hdr(const struct rte_ipsec_sa *sa, void *p, uint32_t plen,
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uint32_t l2len, uint32_t l3len, uint8_t proto)
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{
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struct rte_ipv4_hdr *v4h;
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struct rte_ipv6_hdr *v6h;
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int32_t rc;
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if ((sa->type & RTE_IPSEC_SATP_IPV_MASK) == RTE_IPSEC_SATP_IPV4) {
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v4h = p;
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rc = v4h->next_proto_id;
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v4h->next_proto_id = proto;
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v4h->total_length = rte_cpu_to_be_16(plen - l2len);
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} else if (l3len == sizeof(*v6h)) {
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v6h = p;
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rc = v6h->proto;
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v6h->proto = proto;
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v6h->payload_len = rte_cpu_to_be_16(plen - l2len -
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sizeof(*v6h));
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/* need to add support for IPv6 with options */
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} else
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rc = -ENOTSUP;
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return rc;
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}
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/* update original and new ip header fields for tunnel case */
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static inline void
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update_tun_l3hdr(const struct rte_ipsec_sa *sa, void *p, uint32_t plen,
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uint32_t l2len, rte_be16_t pid)
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{
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struct rte_ipv4_hdr *v4h;
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struct rte_ipv6_hdr *v6h;
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if (sa->type & RTE_IPSEC_SATP_MODE_TUNLV4) {
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v4h = p;
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v4h->packet_id = pid;
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v4h->total_length = rte_cpu_to_be_16(plen - l2len);
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} else {
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v6h = p;
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v6h->payload_len = rte_cpu_to_be_16(plen - l2len -
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sizeof(*v6h));
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}
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}
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#endif /* _IPH_H_ */
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