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libnm-platform: add NM_PLATFORM_MATCH_WITH_ADDRSTATE_DEPRECATED

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Add a new flag to match deprecated addresses. An address is deprecated
when its preferred lifetime has expired but its valid lifetime has
not.

Address deprecation is one of the criteria for source address
selection in IPv6. For IPv4 the deprecation doesn't have any
real effect.

Note that this commit changes the behavior of
nm_ip_config_get_first_address(WITH_ADDRSTATE_NORMAL), since now
deprecated addresses are not returned. However this should not impact
existing callers since they either:

 - request a IPv6 (WITH_ADDRTYPE_LINKLOCAL | WITH_ADDRSTATE_NORMAL)
   address; IPv6 link-local addresses are supposed to have infinite
   lifetimes;

 or

 - request a IPv6 (WITH_ADDRTYPE_NORMAL | WITH_ADDRSTATE__ANY)
   address.
This commit is contained in:
Beniamino Galvani 2021-06-10 22:53:31 +02:00
parent ca31cbbc74
commit ff84a4736d
2 changed files with 10 additions and 6 deletions
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3
src/libnm-platform/nm-platform.c
View file

@ -3448,6 +3448,9 @@ nm_platform_ip_address_match(int addr_family,
&& !NM_FLAGS_HAS(address->n_ifa_flags, IFA_F_OPTIMISTIC)) {
if (!NM_FLAGS_HAS(match_flag, NM_PLATFORM_MATCH_WITH_ADDRSTATE_TENTATIVE))
return FALSE;
} else if (NM_FLAGS_HAS(address->n_ifa_flags, IFA_F_DEPRECATED)) {
if (!NM_FLAGS_HAS(match_flag, NM_PLATFORM_MATCH_WITH_ADDRSTATE_DEPRECATED))
return FALSE;
} else {
if (!NM_FLAGS_HAS(match_flag, NM_PLATFORM_MATCH_WITH_ADDRSTATE_NORMAL))
return FALSE;

13
src/libnm-platform/nm-platform.h
View file

@ -176,12 +176,13 @@ typedef enum {
NM_PLATFORM_MATCH_WITH_ADDRTYPE__ANY =
NM_PLATFORM_MATCH_WITH_ADDRTYPE_NORMAL | NM_PLATFORM_MATCH_WITH_ADDRTYPE_LINKLOCAL,
NM_PLATFORM_MATCH_WITH_ADDRSTATE_NORMAL = (1LL << 2),
NM_PLATFORM_MATCH_WITH_ADDRSTATE_TENTATIVE = (1LL << 3),
NM_PLATFORM_MATCH_WITH_ADDRSTATE_DADFAILED = (1LL << 4),
NM_PLATFORM_MATCH_WITH_ADDRSTATE__ANY = NM_PLATFORM_MATCH_WITH_ADDRSTATE_NORMAL
| NM_PLATFORM_MATCH_WITH_ADDRSTATE_TENTATIVE
| NM_PLATFORM_MATCH_WITH_ADDRSTATE_DADFAILED,
NM_PLATFORM_MATCH_WITH_ADDRSTATE_NORMAL = (1LL << 2),
NM_PLATFORM_MATCH_WITH_ADDRSTATE_TENTATIVE = (1LL << 3),
NM_PLATFORM_MATCH_WITH_ADDRSTATE_DADFAILED = (1LL << 4),
NM_PLATFORM_MATCH_WITH_ADDRSTATE_DEPRECATED = (1LL << 5),
NM_PLATFORM_MATCH_WITH_ADDRSTATE__ANY =
NM_PLATFORM_MATCH_WITH_ADDRSTATE_NORMAL | NM_PLATFORM_MATCH_WITH_ADDRSTATE_TENTATIVE
| NM_PLATFORM_MATCH_WITH_ADDRSTATE_DADFAILED | NM_PLATFORM_MATCH_WITH_ADDRSTATE_DEPRECATED,
} NMPlatformMatchFlags;
#define NM_PLATFORM_LINK_OTHER_NETNS (-1)