LCOV - code coverage report
Current view: top level - include/linux - in.h (source / functions) Hit Total Coverage
Test: landlock.info Lines: 8 16 50.0 %
Date: 2021-04-22 12:43:58 Functions: 0 1 0.0 %

          Line data    Source code
       1             : /* SPDX-License-Identifier: GPL-2.0-or-later */
       2             : /*
       3             :  * INET         An implementation of the TCP/IP protocol suite for the LINUX
       4             :  *              operating system.  INET is implemented using the  BSD Socket
       5             :  *              interface as the means of communication with the user level.
       6             :  *
       7             :  *              Definitions of the Internet Protocol.
       8             :  *
       9             :  * Version:     @(#)in.h        1.0.1   04/21/93
      10             :  *
      11             :  * Authors:     Original taken from the GNU Project <netinet/in.h> file.
      12             :  *              Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
      13             :  */
      14             : #ifndef _LINUX_IN_H
      15             : #define _LINUX_IN_H
      16             : 
      17             : 
      18             : #include <linux/errno.h>
      19             : #include <uapi/linux/in.h>
      20             : 
      21           0 : static inline int proto_ports_offset(int proto)
      22             : {
      23           0 :         switch (proto) {
      24             :         case IPPROTO_TCP:
      25             :         case IPPROTO_UDP:
      26             :         case IPPROTO_DCCP:
      27             :         case IPPROTO_ESP:       /* SPI */
      28             :         case IPPROTO_SCTP:
      29             :         case IPPROTO_UDPLITE:
      30             :                 return 0;
      31           0 :         case IPPROTO_AH:        /* SPI */
      32           0 :                 return 4;
      33           0 :         default:
      34           0 :                 return -EINVAL;
      35             :         }
      36             : }
      37             : 
      38         135 : static inline bool ipv4_is_loopback(__be32 addr)
      39             : {
      40         113 :         return (addr & htonl(0xff000000)) == htonl(0x7f000000);
      41             : }
      42             : 
      43         250 : static inline bool ipv4_is_multicast(__be32 addr)
      44             : {
      45         250 :         return (addr & htonl(0xf0000000)) == htonl(0xe0000000);
      46             : }
      47             : 
      48           0 : static inline bool ipv4_is_local_multicast(__be32 addr)
      49             : {
      50           0 :         return (addr & htonl(0xffffff00)) == htonl(0xe0000000);
      51             : }
      52             : 
      53         197 : static inline bool ipv4_is_lbcast(__be32 addr)
      54             : {
      55             :         /* limited broadcast */
      56         173 :         return addr == htonl(INADDR_BROADCAST);
      57             : }
      58             : 
      59             : static inline bool ipv4_is_all_snoopers(__be32 addr)
      60             : {
      61             :         return addr == htonl(INADDR_ALLSNOOPERS_GROUP);
      62             : }
      63             : 
      64         176 : static inline bool ipv4_is_zeronet(__be32 addr)
      65             : {
      66         154 :         return (addr == 0);
      67             : }
      68             : 
      69             : /* Special-Use IPv4 Addresses (RFC3330) */
      70             : 
      71             : static inline bool ipv4_is_private_10(__be32 addr)
      72             : {
      73             :         return (addr & htonl(0xff000000)) == htonl(0x0a000000);
      74             : }
      75             : 
      76             : static inline bool ipv4_is_private_172(__be32 addr)
      77             : {
      78             :         return (addr & htonl(0xfff00000)) == htonl(0xac100000);
      79             : }
      80             : 
      81             : static inline bool ipv4_is_private_192(__be32 addr)
      82             : {
      83             :         return (addr & htonl(0xffff0000)) == htonl(0xc0a80000);
      84             : }
      85             : 
      86             : static inline bool ipv4_is_linklocal_169(__be32 addr)
      87             : {
      88             :         return (addr & htonl(0xffff0000)) == htonl(0xa9fe0000);
      89             : }
      90             : 
      91             : static inline bool ipv4_is_anycast_6to4(__be32 addr)
      92             : {
      93             :         return (addr & htonl(0xffffff00)) == htonl(0xc0586300);
      94             : }
      95             : 
      96             : static inline bool ipv4_is_test_192(__be32 addr)
      97             : {
      98             :         return (addr & htonl(0xffffff00)) == htonl(0xc0000200);
      99             : }
     100             : 
     101             : static inline bool ipv4_is_test_198(__be32 addr)
     102             : {
     103             :         return (addr & htonl(0xfffe0000)) == htonl(0xc6120000);
     104             : }
     105             : #endif  /* _LINUX_IN_H */

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