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2046976866
This commit addresses several spelling errors identified by the `codespell` tool. The corrections apply to: - Code comments in `fwd.c`, `ip.h`, `isolation.c`, and `log.c`. - An error message string in `vhost_user.c`. Specifically, the following misspellings were corrected: - "adddress" to "address" - "capabilites" to "capabilities" - "Musn't" to "Mustn't" - "calculatd" to "calculated" - "Invalide" to "Invalid" Signed-off-by: Laurent Vivier <lvivier@redhat.com> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
139 lines
3.6 KiB
C
139 lines
3.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright (c) 2021 Red Hat GmbH
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* Author: Stefano Brivio <sbrivio@redhat.com>
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*/
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#ifndef IP_H
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#define IP_H
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#include <netinet/ip.h>
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#include <netinet/ip6.h>
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#define IN4_IS_ADDR_UNSPECIFIED(a) \
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(((struct in_addr *)(a))->s_addr == htonl_constant(INADDR_ANY))
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#define IN4_IS_ADDR_BROADCAST(a) \
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(((struct in_addr *)(a))->s_addr == htonl_constant(INADDR_BROADCAST))
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#define IN4_IS_ADDR_LOOPBACK(a) \
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(ntohl(((struct in_addr *)(a))->s_addr) >> IN_CLASSA_NSHIFT == IN_LOOPBACKNET)
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#define IN4_IS_ADDR_MULTICAST(a) \
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(IN_MULTICAST(ntohl(((struct in_addr *)(a))->s_addr)))
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#define IN4_ARE_ADDR_EQUAL(a, b) \
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(((struct in_addr *)(a))->s_addr == ((struct in_addr *)b)->s_addr)
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#define IN4ADDR_LOOPBACK_INIT \
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{ .s_addr = htonl_constant(INADDR_LOOPBACK) }
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#define IN4ADDR_ANY_INIT \
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{ .s_addr = htonl_constant(INADDR_ANY) }
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#define IN4_IS_ADDR_LINKLOCAL(a) \
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((ntohl(((struct in_addr *)(a))->s_addr) >> 16) == 0xa9fe)
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#define IN4_IS_PREFIX_LINKLOCAL(a, len) \
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((len) >= 16 && IN4_IS_ADDR_LINKLOCAL(a))
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#define L2_BUF_IP4_INIT(proto) \
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{ \
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.version = 4, \
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.ihl = 5, \
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.tos = 0, \
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.tot_len = 0, \
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.id = 0, \
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.frag_off = htons(IP_DF), \
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.ttl = 0xff, \
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.protocol = (proto), \
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.saddr = 0, \
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.daddr = 0, \
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}
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#define L2_BUF_IP4_PSUM(proto) ((uint32_t)htons_constant(0x4500) + \
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(uint32_t)htons_constant(IP_DF) + \
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(uint32_t)htons(0xff00 | (proto)))
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#define IN6_IS_PREFIX_LINKLOCAL(a, len) \
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((len) >= 10 && IN6_IS_ADDR_LINKLOCAL(a))
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#define L2_BUF_IP6_INIT(proto) \
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{ \
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.priority = 0, \
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.version = 6, \
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.flow_lbl = { 0 }, \
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.payload_len = 0, \
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.nexthdr = (proto), \
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.hop_limit = 255, \
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.saddr = IN6ADDR_ANY_INIT, \
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.daddr = IN6ADDR_ANY_INIT, \
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}
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struct ipv6hdr {
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wpedantic"
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#if __BYTE_ORDER == __BIG_ENDIAN
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uint8_t version:4,
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priority:4;
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#else
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uint8_t priority:4,
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version:4;
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#endif
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#pragma GCC diagnostic pop
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uint8_t flow_lbl[3];
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uint16_t payload_len;
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uint8_t nexthdr;
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uint8_t hop_limit;
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struct in6_addr saddr;
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struct in6_addr daddr;
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};
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struct ipv6_opt_hdr {
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uint8_t nexthdr;
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uint8_t hdrlen;
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/*
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* TLV encoded option data follows.
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*/
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} __attribute__((packed)); /* required for some archs */
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/**
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* ip6_set_flow_lbl() - Set flow label in an IPv6 header
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* @ip6h: Pointer to IPv6 header, updated
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* @flow: Set @ip6h flow label to the low 20 bits of this integer
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*/
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static inline void ip6_set_flow_lbl(struct ipv6hdr *ip6h, uint32_t flow)
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{
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ip6h->flow_lbl[0] = (flow >> 16) & 0xf;
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ip6h->flow_lbl[1] = (flow >> 8) & 0xff;
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ip6h->flow_lbl[2] = (flow >> 0) & 0xff;
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}
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/** ip6_get_flow_lbl() - Get flow label from an IPv6 header
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* @ip6h: Pointer to IPv6 header
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*
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* Return: flow label from @ip6h as an integer (<= 20 bits)
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*/
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static inline uint32_t ip6_get_flow_lbl(const struct ipv6hdr *ip6h)
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{
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return (ip6h->flow_lbl[0] & 0xf) << 16 |
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ip6h->flow_lbl[1] << 8 |
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ip6h->flow_lbl[2];
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}
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char *ipv6_l4hdr(const struct pool *p, int idx, size_t offset, uint8_t *proto,
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size_t *dlen);
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/* IPv6 link-local all-nodes multicast address, ff02::1 */
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static const struct in6_addr in6addr_ll_all_nodes = {
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.s6_addr = {
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0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
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},
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};
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/* IPv4 Limited Broadcast (RFC 919, Section 7), 255.255.255.255 */
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static const struct in_addr in4addr_broadcast = { 0xffffffff };
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#ifndef IPV4_MIN_MTU
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#define IPV4_MIN_MTU 68
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#endif
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#ifndef IPV6_MIN_MTU
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#define IPV6_MIN_MTU 1280
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#endif
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#endif /* IP_H */
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