~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/include/linux/sunrpc/addr.h

Version: ~ [ linux-5.15-rc5 ] ~ [ linux-5.14.11 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.72 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.152 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.210 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.250 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.286 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.288 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.18.140 ] ~ [ linux-3.16.85 ] ~ [ linux-3.14.79 ] ~ [ linux-3.12.74 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  * linux/include/linux/sunrpc/addr.h
  3  *
  4  * Various routines for copying and comparing sockaddrs and for
  5  * converting them to and from presentation format.
  6  */
  7 #ifndef _LINUX_SUNRPC_ADDR_H
  8 #define _LINUX_SUNRPC_ADDR_H
  9 
 10 #include <linux/socket.h>
 11 #include <linux/in.h>
 12 #include <linux/in6.h>
 13 #include <net/ipv6.h>
 14 
 15 size_t          rpc_ntop(const struct sockaddr *, char *, const size_t);
 16 size_t          rpc_pton(struct net *, const char *, const size_t,
 17                          struct sockaddr *, const size_t);
 18 char *          rpc_sockaddr2uaddr(const struct sockaddr *, gfp_t);
 19 size_t          rpc_uaddr2sockaddr(struct net *, const char *, const size_t,
 20                                    struct sockaddr *, const size_t);
 21 
 22 static inline unsigned short rpc_get_port(const struct sockaddr *sap)
 23 {
 24         switch (sap->sa_family) {
 25         case AF_INET:
 26                 return ntohs(((struct sockaddr_in *)sap)->sin_port);
 27         case AF_INET6:
 28                 return ntohs(((struct sockaddr_in6 *)sap)->sin6_port);
 29         }
 30         return 0;
 31 }
 32 
 33 static inline void rpc_set_port(struct sockaddr *sap,
 34                                 const unsigned short port)
 35 {
 36         switch (sap->sa_family) {
 37         case AF_INET:
 38                 ((struct sockaddr_in *)sap)->sin_port = htons(port);
 39                 break;
 40         case AF_INET6:
 41                 ((struct sockaddr_in6 *)sap)->sin6_port = htons(port);
 42                 break;
 43         }
 44 }
 45 
 46 #define IPV6_SCOPE_DELIMITER            '%'
 47 #define IPV6_SCOPE_ID_LEN               sizeof("%nnnnnnnnnn")
 48 
 49 static inline bool rpc_cmp_addr4(const struct sockaddr *sap1,
 50                                  const struct sockaddr *sap2)
 51 {
 52         const struct sockaddr_in *sin1 = (const struct sockaddr_in *)sap1;
 53         const struct sockaddr_in *sin2 = (const struct sockaddr_in *)sap2;
 54 
 55         return sin1->sin_addr.s_addr == sin2->sin_addr.s_addr;
 56 }
 57 
 58 static inline bool __rpc_copy_addr4(struct sockaddr *dst,
 59                                     const struct sockaddr *src)
 60 {
 61         const struct sockaddr_in *ssin = (struct sockaddr_in *) src;
 62         struct sockaddr_in *dsin = (struct sockaddr_in *) dst;
 63 
 64         dsin->sin_family = ssin->sin_family;
 65         dsin->sin_addr.s_addr = ssin->sin_addr.s_addr;
 66         return true;
 67 }
 68 
 69 #if IS_ENABLED(CONFIG_IPV6)
 70 static inline bool rpc_cmp_addr6(const struct sockaddr *sap1,
 71                                  const struct sockaddr *sap2)
 72 {
 73         const struct sockaddr_in6 *sin1 = (const struct sockaddr_in6 *)sap1;
 74         const struct sockaddr_in6 *sin2 = (const struct sockaddr_in6 *)sap2;
 75 
 76         if (!ipv6_addr_equal(&sin1->sin6_addr, &sin2->sin6_addr))
 77                 return false;
 78         else if (ipv6_addr_type(&sin1->sin6_addr) & IPV6_ADDR_LINKLOCAL)
 79                 return sin1->sin6_scope_id == sin2->sin6_scope_id;
 80 
 81         return true;
 82 }
 83 
 84 static inline bool __rpc_copy_addr6(struct sockaddr *dst,
 85                                     const struct sockaddr *src)
 86 {
 87         const struct sockaddr_in6 *ssin6 = (const struct sockaddr_in6 *) src;
 88         struct sockaddr_in6 *dsin6 = (struct sockaddr_in6 *) dst;
 89 
 90         dsin6->sin6_family = ssin6->sin6_family;
 91         dsin6->sin6_addr = ssin6->sin6_addr;
 92         dsin6->sin6_scope_id = ssin6->sin6_scope_id;
 93         return true;
 94 }
 95 #else   /* !(IS_ENABLED(CONFIG_IPV6) */
 96 static inline bool rpc_cmp_addr6(const struct sockaddr *sap1,
 97                                    const struct sockaddr *sap2)
 98 {
 99         return false;
100 }
101 
102 static inline bool __rpc_copy_addr6(struct sockaddr *dst,
103                                     const struct sockaddr *src)
104 {
105         return false;
106 }
107 #endif  /* !(IS_ENABLED(CONFIG_IPV6) */
108 
109 /**
110  * rpc_cmp_addr - compare the address portion of two sockaddrs.
111  * @sap1: first sockaddr
112  * @sap2: second sockaddr
113  *
114  * Just compares the family and address portion. Ignores port, but
115  * compares the scope if it's a link-local address.
116  *
117  * Returns true if the addrs are equal, false if they aren't.
118  */
119 static inline bool rpc_cmp_addr(const struct sockaddr *sap1,
120                                 const struct sockaddr *sap2)
121 {
122         if (sap1->sa_family == sap2->sa_family) {
123                 switch (sap1->sa_family) {
124                 case AF_INET:
125                         return rpc_cmp_addr4(sap1, sap2);
126                 case AF_INET6:
127                         return rpc_cmp_addr6(sap1, sap2);
128                 }
129         }
130         return false;
131 }
132 
133 /**
134  * rpc_cmp_addr_port - compare the address and port number of two sockaddrs.
135  * @sap1: first sockaddr
136  * @sap2: second sockaddr
137  */
138 static inline bool rpc_cmp_addr_port(const struct sockaddr *sap1,
139                                      const struct sockaddr *sap2)
140 {
141         if (!rpc_cmp_addr(sap1, sap2))
142                 return false;
143         return rpc_get_port(sap1) == rpc_get_port(sap2);
144 }
145 
146 /**
147  * rpc_copy_addr - copy the address portion of one sockaddr to another
148  * @dst: destination sockaddr
149  * @src: source sockaddr
150  *
151  * Just copies the address portion and family. Ignores port, scope, etc.
152  * Caller is responsible for making certain that dst is large enough to hold
153  * the address in src. Returns true if address family is supported. Returns
154  * false otherwise.
155  */
156 static inline bool rpc_copy_addr(struct sockaddr *dst,
157                                  const struct sockaddr *src)
158 {
159         switch (src->sa_family) {
160         case AF_INET:
161                 return __rpc_copy_addr4(dst, src);
162         case AF_INET6:
163                 return __rpc_copy_addr6(dst, src);
164         }
165         return false;
166 }
167 
168 /**
169  * rpc_get_scope_id - return scopeid for a given sockaddr
170  * @sa: sockaddr to get scopeid from
171  *
172  * Returns the value of the sin6_scope_id for AF_INET6 addrs, or 0 if
173  * not an AF_INET6 address.
174  */
175 static inline u32 rpc_get_scope_id(const struct sockaddr *sa)
176 {
177         if (sa->sa_family != AF_INET6)
178                 return 0;
179 
180         return ((struct sockaddr_in6 *) sa)->sin6_scope_id;
181 }
182 
183 #endif /* _LINUX_SUNRPC_ADDR_H */
184 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp