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files >> //usr/include/libnl3/netlink/utils.h
/* SPDX-License-Identifier: LGPL-2.1-only */ /* * Copyright (c) 2003-2012 Thomas Graf <tgraf@suug.ch> */ #ifndef NETLINK_UTILS_H_ #define NETLINK_UTILS_H_ #include <netlink/netlink.h> #include <netlink/list.h> #ifdef __cplusplus extern "C" { #endif #if defined(__GNUC__) && __GNUC__ > 5 #define _nl_attribute_printf(a, b) __attribute__((__format__(printf, a, b))) #else #define _nl_attribute_printf(a, b) #endif /** * @name Probability Constants * @{ */ /** * Lower probability limit * @ingroup utils */ #define NL_PROB_MIN 0x0 /** * Upper probability limit nl_dump_type * @ingroup utils */ #define NL_PROB_MAX 0xffffffff /** @} */ enum { NL_BYTE_RATE, NL_BIT_RATE, }; /* unit pretty-printing */ extern double nl_cancel_down_bytes(unsigned long long, char **); extern double nl_cancel_down_bits(unsigned long long, char **); extern int nl_rate2str(unsigned long long, int, char *, size_t); extern double nl_cancel_down_us(uint32_t, char **); /* generic unit translations */ extern long nl_size2int(const char *); extern char * nl_size2str(const size_t, char *, const size_t); extern long nl_prob2int(const char *); /* time translations */ extern int nl_get_user_hz(void); extern int nl_get_psched_hz(void); extern uint32_t nl_us2ticks(uint32_t); extern uint32_t nl_ticks2us(uint32_t); extern int nl_str2msec(const char *, uint64_t *); extern char * nl_msec2str(uint64_t, char *, size_t); /* link layer protocol translations */ extern char * nl_llproto2str(int, char *, size_t); extern int nl_str2llproto(const char *); /* ethernet protocol translations */ extern char * nl_ether_proto2str(int, char *, size_t); extern int nl_str2ether_proto(const char *); /* IP protocol translations */ extern char * nl_ip_proto2str(int, char *, size_t); extern int nl_str2ip_proto(const char *); /* Dumping helpers */ extern void nl_new_line(struct nl_dump_params *); extern void nl_dump(struct nl_dump_params *, const char *, ...) _nl_attribute_printf(2, 3); extern void nl_dump_line(struct nl_dump_params *, const char *, ...) _nl_attribute_printf(2, 3); enum { NL_CAPABILITY_NONE, /** * rtnl_route_build_msg() no longer guesses the route scope * if explicitly set to RT_SCOPE_NOWHERE. * @ingroup utils */ NL_CAPABILITY_ROUTE_BUILD_MSG_SET_SCOPE = 1, #define NL_CAPABILITY_ROUTE_BUILD_MSG_SET_SCOPE NL_CAPABILITY_ROUTE_BUILD_MSG_SET_SCOPE /** * rtnl_link_veth_get_peer() now returns a reference that is owned by the * caller and must be released by the caller with rtnl_link_put(). */ NL_CAPABILITY_ROUTE_LINK_VETH_GET_PEER_OWN_REFERENCE = 2, #define NL_CAPABILITY_ROUTE_LINK_VETH_GET_PEER_OWN_REFERENCE NL_CAPABILITY_ROUTE_LINK_VETH_GET_PEER_OWN_REFERENCE /** * rtnl_u32_add_action() and rtnl_basic_add_action() now grab a reference to act * caller are free to release its own */ NL_CAPABILITY_ROUTE_LINK_CLS_ADD_ACT_OWN_REFERENCE = 3, #define NL_CAPABILITY_ROUTE_LINK_CLS_ADD_ACT_OWN_REFERENCE NL_CAPABILITY_ROUTE_LINK_CLS_ADD_ACT_OWN_REFERENCE /** * Indicate that the local port is unspecified until the user accesses * it (via nl_socket_get_local_port()) or until nl_connect(). More importantly, * if the port is left unspecified, nl_connect() will retry generating another * port when bind() fails with ADDRINUSE. */ NL_CAPABILITY_NL_CONNECT_RETRY_GENERATE_PORT_ON_ADDRINUSE = 4, #define NL_CAPABILITY_NL_CONNECT_RETRY_GENERATE_PORT_ON_ADDRINUSE NL_CAPABILITY_NL_CONNECT_RETRY_GENERATE_PORT_ON_ADDRINUSE /** * Indicate that rtnl_link_get_kernel() fails with -NLE_OPNOTSUPP in case * of older kernals not supporting lookup by ifname. This changes behavior * from returning -NLE_INVAL to return -NLE_OPNOTSUPP. */ NL_CAPABILITY_ROUTE_LINK_GET_KERNEL_FAIL_OPNOTSUPP = 5, #define NL_CAPABILITY_ROUTE_LINK_GET_KERNEL_FAIL_OPNOTSUPP NL_CAPABILITY_ROUTE_LINK_GET_KERNEL_FAIL_OPNOTSUPP /** * Also consider the a_cacheinfo field (ADDR_ATTR_CACHEINFO) that contains the * address timestamps and expiry when comparing struct rtnl_addr objects with * nl_object_diff(). */ NL_CAPABILITY_ROUTE_ADDR_COMPARE_CACHEINFO = 6, #define NL_CAPABILITY_ROUTE_ADDR_COMPARE_CACHEINFO NL_CAPABILITY_ROUTE_ADDR_COMPARE_CACHEINFO /** * The library version is libnl3 3.2.26 or newer. This capability should never be backported. */ NL_CAPABILITY_VERSION_3_2_26 = 7, #define NL_CAPABILITY_VERSION_3_2_26 NL_CAPABILITY_VERSION_3_2_26 /** * nl_recv() fails with NLE_MSG_TRUNC if a message got truncated * with NL_MSG_PEEK disabled. Previously, the failed message was wrongly * discarded and the next message received. */ NL_CAPABILITY_NL_RECV_FAIL_TRUNC_NO_PEEK = 8, #define NL_CAPABILITY_NL_RECV_FAIL_TRUNC_NO_PEEK NL_CAPABILITY_NL_RECV_FAIL_TRUNC_NO_PEEK /** * rtnl_link_build_change_request() and rtnl_link_change() would set ifi.ifi_flags but leave * ifi.ifi_change at zero. This was later fixed to set ifi.ifi_change to the flags that are actually * set in changes. */ NL_CAPABILITY_LINK_BUILD_CHANGE_REQUEST_SET_CHANGE = 9, #define NL_CAPABILITY_LINK_BUILD_CHANGE_REQUEST_SET_CHANGE NL_CAPABILITY_LINK_BUILD_CHANGE_REQUEST_SET_CHANGE /** * Between 3.2.14 (64fcb47a36ec12d7e7f00605f6a8952ce985dd08) and 3.2.22 (8571f58f23763d8db7365d02c9b27832ad3d7005), * rtnl_neigh_get() behaved differently and only returned objects with family AF_UNSPEC. * This capability indicates, that the function was fixed. The absense of the capability, * doesn't indicate however which behavior the function will have. So beware. */ NL_CAPABILITY_RTNL_NEIGH_GET_FILTER_AF_UNSPEC_FIX = 10, #define NL_CAPABILITY_RTNL_NEIGH_GET_FILTER_AF_UNSPEC_FIX NL_CAPABILITY_RTNL_NEIGH_GET_FILTER_AF_UNSPEC_FIX /** * The library version is libnl3 3.2.27 or newer. This capability should never be backported. */ NL_CAPABILITY_VERSION_3_2_27 = 11, #define NL_CAPABILITY_VERSION_3_2_27 NL_CAPABILITY_VERSION_3_2_27 /** * Properly serialize vlan protocol IFLA_VLAN_PROTOCOL. */ NL_CAPABILITY_RTNL_LINK_VLAN_PROTOCOL_SERIALZE = 12, #define NL_CAPABILITY_RTNL_LINK_VLAN_PROTOCOL_SERIALZE NL_CAPABILITY_RTNL_LINK_VLAN_PROTOCOL_SERIALZE /** * Properly read gre REMOTE port. */ NL_CAPABILITY_RTNL_LINK_PARSE_GRE_REMOTE = 13, #define NL_CAPABILITY_RTNL_LINK_PARSE_GRE_REMOTE NL_CAPABILITY_RTNL_LINK_PARSE_GRE_REMOTE /** * Don't skip over vlan ingress-map entries with "to" field zero when serializing * a netlink message. Previously such entires would be ignored which inhibits the * user from clearing ingress map entries. */ NL_CAPABILITY_RTNL_LINK_VLAN_INGRESS_MAP_CLEAR = 14, #define NL_CAPABILITY_RTNL_LINK_VLAN_INGRESS_MAP_CLEAR NL_CAPABILITY_RTNL_LINK_VLAN_INGRESS_MAP_CLEAR /** * Consider vxlan link info for nl_object_diff(). */ NL_CAPABILITY_RTNL_LINK_VXLAN_IO_COMPARE = 15, #define NL_CAPABILITY_RTNL_LINK_VXLAN_IO_COMPARE NL_CAPABILITY_RTNL_LINK_VXLAN_IO_COMPARE /** * Support 64 bit attributes for nl_object_diff(). */ NL_CAPABILITY_NL_OBJECT_DIFF64 = 16, #define NL_CAPABILITY_NL_OBJECT_DIFF64 NL_CAPABILITY_NL_OBJECT_DIFF64 /** * Support omitting @key argument to xfrmnl_sa_get_*_params() to check * for required buffer size for key. */ NL_CAPABILITY_XFRM_SA_KEY_SIZE = 17, #define NL_CAPABILITY_XFRM_SA_KEY_SIZE NL_CAPABILITY_XFRM_SA_KEY_SIZE /** * Properly handle nl_object_identity() for AF_INET and AF_INET6 addresses * and properly handle the peer/IFA_ADDRESS for IPv4 addresses. */ NL_CAPABILITY_RTNL_ADDR_PEER_FIX = 18, #define NL_CAPABILITY_RTNL_ADDR_PEER_FIX NL_CAPABILITY_RTNL_ADDR_PEER_FIX /** * The library version is libnl3 3.2.28 or newer. This capability should never be backported. */ NL_CAPABILITY_VERSION_3_2_28 = 19, #define NL_CAPABILITY_VERSION_3_2_28 NL_CAPABILITY_VERSION_3_2_28 /** * After NL_CAPABILITY_RTNL_ADDR_PEER_FIX, a follow up regression to lookup * IPv4 addresses in the cache was fixed (PR#105). */ NL_CAPABILITY_RTNL_ADDR_PEER_ID_FIX = 20, #define NL_CAPABILITY_RTNL_ADDR_PEER_ID_FIX NL_CAPABILITY_RTNL_ADDR_PEER_ID_FIX /** * nl_addr_fill_sockaddr() properly checks that the provided address to * avoid read-out-of-bounds for invalid addresses. */ NL_CAPABILITY_NL_ADDR_FILL_SOCKADDR = 21, #define NL_CAPABILITY_NL_ADDR_FILL_SOCKADDR NL_CAPABILITY_NL_ADDR_FILL_SOCKADDR /** * Support omitting @ctx_str argument to xfrmnl_sa_get_sec_ctx() to check * for required buffer size for context string. */ NL_CAPABILITY_XFRM_SEC_CTX_LEN = 22, #define NL_CAPABILITY_XFRM_SEC_CTX_LEN NL_CAPABILITY_XFRM_SEC_CTX_LEN /** * rtnl_link_build_add_request() would set ifi.ifi_flags but leave ifi.ifi_change at zero. * This was later fixed to set ifi.ifi_change to the flags that are actually * set */ NL_CAPABILITY_LINK_BUILD_ADD_REQUEST_SET_CHANGE = 23, #define NL_CAPABILITY_LINK_BUILD_ADD_REQUEST_SET_CHANGE NL_CAPABILITY_LINK_BUILD_ADD_REQUEST_SET_CHANGE /* Older versions of libnl3 would not use MSG_PEEK for nl_recvmsgs() unless calling * nl_socket_enable_msg_peek(). Instead, the user had to specify the buffer size via * nl_socket_set_msg_buf_size(), which in turn would default to 4*getpagesize(). * * The default value might not be large enough, so users who were not aware of the * problem easily ended up using a too small receive buffer. Usually, one wants to * avoid MSG_PEEK for recvmsg() because it requires an additional syscall. * * Now, as indicated by this capability, nl_recvmsgs() would use MSG_PEEK by default. The * user still can explicitly disable MSG_PEEK by calling nl_socket_disable_msg_peek() or * by setting the nl_socket_set_msg_buf_size() to a non-zero value. */ NL_CAPABILITY_NL_RECVMSGS_PEEK_BY_DEFAULT = 24, #define NL_CAPABILITY_NL_RECVMSGS_PEEK_BY_DEFAULT NL_CAPABILITY_NL_RECVMSGS_PEEK_BY_DEFAULT /** * The library version is libnl3 3.2.29 or newer. This capability should never be backported. */ NL_CAPABILITY_VERSION_3_2_29 = 25, #define NL_CAPABILITY_VERSION_3_2_29 NL_CAPABILITY_VERSION_3_2_29 /** * Support omitting @ctx_str argument to xfrmnl_sp_get_sec_ctx() to check * for required buffer size for context string. */ NL_CAPABILITY_XFRM_SP_SEC_CTX_LEN = 26, #define NL_CAPABILITY_XFRM_SP_SEC_CTX_LEN NL_CAPABILITY_XFRM_SP_SEC_CTX_LEN /** * The library version is libnl3 3.3.0 or newer. This capability should never be backported. */ NL_CAPABILITY_VERSION_3_3_0 = 27, #define NL_CAPABILITY_VERSION_3_3_0 NL_CAPABILITY_VERSION_3_3_0 /** * The library version is libnl3 3.4.0 or newer. This capability should never be backported. */ NL_CAPABILITY_VERSION_3_4_0 = 28, #define NL_CAPABILITY_VERSION_3_4_0 NL_CAPABILITY_VERSION_3_4_0 /** * Fixed memory corruption in rtnl_link_vlan_set_egress_map(). Previously, if you tried * to add more then 4 mappings, a buffer overflow occured. Also fixed nl_object_clone() * for VLAN links. */ NL_CAPABILITY_ROUTE_FIX_VLAN_SET_EGRESS_MAP = 29, #define NL_CAPABILITY_ROUTE_FIX_VLAN_SET_EGRESS_MAP NL_CAPABILITY_ROUTE_FIX_VLAN_SET_EGRESS_MAP /** * The library version is libnl3 3.5.0 or newer. This capability should never be backported. */ NL_CAPABILITY_VERSION_3_5_0 = 30, #define NL_CAPABILITY_VERSION_3_5_0 NL_CAPABILITY_VERSION_3_5_0 /** * nl_object_identical() can consider objects identical, if they both lack the same * set of ID attributes. */ NL_CAPABILITY_NL_OBJECT_IDENTICAL_PARTIAL = 31, #define NL_CAPABILITY_NL_OBJECT_IDENTICAL_PARTIAL NL_CAPABILITY_NL_OBJECT_IDENTICAL_PARTIAL /** * The library version is libnl3 3.6.0 or newer. This capability should never be backported. */ NL_CAPABILITY_VERSION_3_6_0 = 32, #define NL_CAPABILITY_VERSION_3_6_0 NL_CAPABILITY_VERSION_3_6_0 /** * The library version is libnl3 3.7.0 or newer. This capability should never be backported. */ NL_CAPABILITY_VERSION_3_7_0 = 33, #define NL_CAPABILITY_VERSION_3_7_0 NL_CAPABILITY_VERSION_3_7_0 __NL_CAPABILITY_MAX, NL_CAPABILITY_MAX = (__NL_CAPABILITY_MAX - 1), #define NL_CAPABILITY_MAX NL_CAPABILITY_MAX /** * The range 0x7000 to 0x7FFF is reserved for private capabilities. Upstream libnl3 will * not register capabilities in this range. However, instead of adding private capabilities, * better register their number with upstream libnl3. */ #define NL_CAPABILITY_IS_USER_RESERVED(cap) ( ((cap) & ~0x0FFF) == 0x7000 ) }; int nl_has_capability (int capability); #ifdef __cplusplus } #endif #endif
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