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-rw-r--r--include/linux/in.h282
1 files changed, 66 insertions, 216 deletions
diff --git a/include/linux/in.h b/include/linux/in.h
index ba355384016..31b49373476 100644
--- a/include/linux/in.h
+++ b/include/linux/in.h
@@ -18,237 +18,87 @@
#ifndef _LINUX_IN_H
#define _LINUX_IN_H
-#include <linux/types.h>
-#include <linux/socket.h>
-
-/* Standard well-defined IP protocols. */
-enum {
- IPPROTO_IP = 0, /* Dummy protocol for TCP */
- IPPROTO_ICMP = 1, /* Internet Control Message Protocol */
- IPPROTO_IGMP = 2, /* Internet Group Management Protocol */
- IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94) */
- IPPROTO_TCP = 6, /* Transmission Control Protocol */
- IPPROTO_EGP = 8, /* Exterior Gateway Protocol */
- IPPROTO_PUP = 12, /* PUP protocol */
- IPPROTO_UDP = 17, /* User Datagram Protocol */
- IPPROTO_IDP = 22, /* XNS IDP protocol */
- IPPROTO_DCCP = 33, /* Datagram Congestion Control Protocol */
- IPPROTO_RSVP = 46, /* RSVP protocol */
- IPPROTO_GRE = 47, /* Cisco GRE tunnels (rfc 1701,1702) */
-
- IPPROTO_IPV6 = 41, /* IPv6-in-IPv4 tunnelling */
-
- IPPROTO_ESP = 50, /* Encapsulation Security Payload protocol */
- IPPROTO_AH = 51, /* Authentication Header protocol */
- IPPROTO_PIM = 103, /* Protocol Independent Multicast */
-
- IPPROTO_COMP = 108, /* Compression Header protocol */
- IPPROTO_SCTP = 132, /* Stream Control Transport Protocol */
-
- IPPROTO_RAW = 255, /* Raw IP packets */
- IPPROTO_MAX
-};
-
-
-/* Internet address. */
-struct in_addr {
- __u32 s_addr;
-};
-
-#define IP_TOS 1
-#define IP_TTL 2
-#define IP_HDRINCL 3
-#define IP_OPTIONS 4
-#define IP_ROUTER_ALERT 5
-#define IP_RECVOPTS 6
-#define IP_RETOPTS 7
-#define IP_PKTINFO 8
-#define IP_PKTOPTIONS 9
-#define IP_MTU_DISCOVER 10
-#define IP_RECVERR 11
-#define IP_RECVTTL 12
-#define IP_RECVTOS 13
-#define IP_MTU 14
-#define IP_FREEBIND 15
-#define IP_IPSEC_POLICY 16
-#define IP_XFRM_POLICY 17
-
-/* BSD compatibility */
-#define IP_RECVRETOPTS IP_RETOPTS
-
-/* IP_MTU_DISCOVER values */
-#define IP_PMTUDISC_DONT 0 /* Never send DF frames */
-#define IP_PMTUDISC_WANT 1 /* Use per route hints */
-#define IP_PMTUDISC_DO 2 /* Always DF */
-
-#define IP_MULTICAST_IF 32
-#define IP_MULTICAST_TTL 33
-#define IP_MULTICAST_LOOP 34
-#define IP_ADD_MEMBERSHIP 35
-#define IP_DROP_MEMBERSHIP 36
-#define IP_UNBLOCK_SOURCE 37
-#define IP_BLOCK_SOURCE 38
-#define IP_ADD_SOURCE_MEMBERSHIP 39
-#define IP_DROP_SOURCE_MEMBERSHIP 40
-#define IP_MSFILTER 41
-#define MCAST_JOIN_GROUP 42
-#define MCAST_BLOCK_SOURCE 43
-#define MCAST_UNBLOCK_SOURCE 44
-#define MCAST_LEAVE_GROUP 45
-#define MCAST_JOIN_SOURCE_GROUP 46
-#define MCAST_LEAVE_SOURCE_GROUP 47
-#define MCAST_MSFILTER 48
-
-#define MCAST_EXCLUDE 0
-#define MCAST_INCLUDE 1
-
-/* These need to appear somewhere around here */
-#define IP_DEFAULT_MULTICAST_TTL 1
-#define IP_DEFAULT_MULTICAST_LOOP 1
-
-/* Request struct for multicast socket ops */
-
-struct ip_mreq
-{
- struct in_addr imr_multiaddr; /* IP multicast address of group */
- struct in_addr imr_interface; /* local IP address of interface */
-};
-struct ip_mreqn
+#include <linux/errno.h>
+#include <uapi/linux/in.h>
+
+static inline int proto_ports_offset(int proto)
{
- struct in_addr imr_multiaddr; /* IP multicast address of group */
- struct in_addr imr_address; /* local IP address of interface */
- int imr_ifindex; /* Interface index */
-};
-
-struct ip_mreq_source {
- __u32 imr_multiaddr;
- __u32 imr_interface;
- __u32 imr_sourceaddr;
-};
-
-struct ip_msfilter {
- __u32 imsf_multiaddr;
- __u32 imsf_interface;
- __u32 imsf_fmode;
- __u32 imsf_numsrc;
- __u32 imsf_slist[1];
-};
-
-#define IP_MSFILTER_SIZE(numsrc) \
- (sizeof(struct ip_msfilter) - sizeof(__u32) \
- + (numsrc) * sizeof(__u32))
-
-struct group_req
+ switch (proto) {
+ case IPPROTO_TCP:
+ case IPPROTO_UDP:
+ case IPPROTO_DCCP:
+ case IPPROTO_ESP: /* SPI */
+ case IPPROTO_SCTP:
+ case IPPROTO_UDPLITE:
+ return 0;
+ case IPPROTO_AH: /* SPI */
+ return 4;
+ default:
+ return -EINVAL;
+ }
+}
+
+static inline bool ipv4_is_loopback(__be32 addr)
{
- __u32 gr_interface; /* interface index */
- struct __kernel_sockaddr_storage gr_group; /* group address */
-};
+ return (addr & htonl(0xff000000)) == htonl(0x7f000000);
+}
-struct group_source_req
+static inline bool ipv4_is_multicast(__be32 addr)
{
- __u32 gsr_interface; /* interface index */
- struct __kernel_sockaddr_storage gsr_group; /* group address */
- struct __kernel_sockaddr_storage gsr_source; /* source address */
-};
+ return (addr & htonl(0xf0000000)) == htonl(0xe0000000);
+}
-struct group_filter
-{
- __u32 gf_interface; /* interface index */
- struct __kernel_sockaddr_storage gf_group; /* multicast address */
- __u32 gf_fmode; /* filter mode */
- __u32 gf_numsrc; /* number of sources */
- struct __kernel_sockaddr_storage gf_slist[1]; /* interface index */
-};
-
-#define GROUP_FILTER_SIZE(numsrc) \
- (sizeof(struct group_filter) - sizeof(struct __kernel_sockaddr_storage) \
- + (numsrc) * sizeof(struct __kernel_sockaddr_storage))
-
-struct in_pktinfo
+static inline bool ipv4_is_local_multicast(__be32 addr)
{
- int ipi_ifindex;
- struct in_addr ipi_spec_dst;
- struct in_addr ipi_addr;
-};
-
-/* Structure describing an Internet (IP) socket address. */
-#define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */
-struct sockaddr_in {
- sa_family_t sin_family; /* Address family */
- unsigned short int sin_port; /* Port number */
- struct in_addr sin_addr; /* Internet address */
-
- /* Pad to size of `struct sockaddr'. */
- unsigned char __pad[__SOCK_SIZE__ - sizeof(short int) -
- sizeof(unsigned short int) - sizeof(struct in_addr)];
-};
-#define sin_zero __pad /* for BSD UNIX comp. -FvK */
-
-
-/*
- * Definitions of the bits in an Internet address integer.
- * On subnets, host and network parts are found according
- * to the subnet mask, not these masks.
- */
-#define IN_CLASSA(a) ((((long int) (a)) & 0x80000000) == 0)
-#define IN_CLASSA_NET 0xff000000
-#define IN_CLASSA_NSHIFT 24
-#define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
-#define IN_CLASSA_MAX 128
-
-#define IN_CLASSB(a) ((((long int) (a)) & 0xc0000000) == 0x80000000)
-#define IN_CLASSB_NET 0xffff0000
-#define IN_CLASSB_NSHIFT 16
-#define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
-#define IN_CLASSB_MAX 65536
-
-#define IN_CLASSC(a) ((((long int) (a)) & 0xe0000000) == 0xc0000000)
-#define IN_CLASSC_NET 0xffffff00
-#define IN_CLASSC_NSHIFT 8
-#define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
-
-#define IN_CLASSD(a) ((((long int) (a)) & 0xf0000000) == 0xe0000000)
-#define IN_MULTICAST(a) IN_CLASSD(a)
-#define IN_MULTICAST_NET 0xF0000000
+ return (addr & htonl(0xffffff00)) == htonl(0xe0000000);
+}
-#define IN_EXPERIMENTAL(a) ((((long int) (a)) & 0xf0000000) == 0xf0000000)
-#define IN_BADCLASS(a) IN_EXPERIMENTAL((a))
-
-/* Address to accept any incoming messages. */
-#define INADDR_ANY ((unsigned long int) 0x00000000)
-
-/* Address to send to all hosts. */
-#define INADDR_BROADCAST ((unsigned long int) 0xffffffff)
+static inline bool ipv4_is_lbcast(__be32 addr)
+{
+ /* limited broadcast */
+ return addr == htonl(INADDR_BROADCAST);
+}
-/* Address indicating an error return. */
-#define INADDR_NONE ((unsigned long int) 0xffffffff)
+static inline bool ipv4_is_zeronet(__be32 addr)
+{
+ return (addr & htonl(0xff000000)) == htonl(0x00000000);
+}
-/* Network number for local host loopback. */
-#define IN_LOOPBACKNET 127
+/* Special-Use IPv4 Addresses (RFC3330) */
-/* Address to loopback in software to local host. */
-#define INADDR_LOOPBACK 0x7f000001 /* 127.0.0.1 */
-#define IN_LOOPBACK(a) ((((long int) (a)) & 0xff000000) == 0x7f000000)
+static inline bool ipv4_is_private_10(__be32 addr)
+{
+ return (addr & htonl(0xff000000)) == htonl(0x0a000000);
+}
-/* Defines for Multicast INADDR */
-#define INADDR_UNSPEC_GROUP 0xe0000000U /* 224.0.0.0 */
-#define INADDR_ALLHOSTS_GROUP 0xe0000001U /* 224.0.0.1 */
-#define INADDR_ALLRTRS_GROUP 0xe0000002U /* 224.0.0.2 */
-#define INADDR_MAX_LOCAL_GROUP 0xe00000ffU /* 224.0.0.255 */
+static inline bool ipv4_is_private_172(__be32 addr)
+{
+ return (addr & htonl(0xfff00000)) == htonl(0xac100000);
+}
+static inline bool ipv4_is_private_192(__be32 addr)
+{
+ return (addr & htonl(0xffff0000)) == htonl(0xc0a80000);
+}
-/* <asm/byteorder.h> contains the htonl type stuff.. */
-#include <asm/byteorder.h>
+static inline bool ipv4_is_linklocal_169(__be32 addr)
+{
+ return (addr & htonl(0xffff0000)) == htonl(0xa9fe0000);
+}
-#ifdef __KERNEL__
-/* Some random defines to make it easier in the kernel.. */
-#define LOOPBACK(x) (((x) & htonl(0xff000000)) == htonl(0x7f000000))
-#define MULTICAST(x) (((x) & htonl(0xf0000000)) == htonl(0xe0000000))
-#define BADCLASS(x) (((x) & htonl(0xf0000000)) == htonl(0xf0000000))
-#define ZERONET(x) (((x) & htonl(0xff000000)) == htonl(0x00000000))
-#define LOCAL_MCAST(x) (((x) & htonl(0xFFFFFF00)) == htonl(0xE0000000))
+static inline bool ipv4_is_anycast_6to4(__be32 addr)
+{
+ return (addr & htonl(0xffffff00)) == htonl(0xc0586300);
+}
-#endif
+static inline bool ipv4_is_test_192(__be32 addr)
+{
+ return (addr & htonl(0xffffff00)) == htonl(0xc0000200);
+}
+static inline bool ipv4_is_test_198(__be32 addr)
+{
+ return (addr & htonl(0xfffe0000)) == htonl(0xc6120000);
+}
#endif /* _LINUX_IN_H */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 17:32:00 +0000