diff options
| author | Susant Sahani <ssahani@vmware.com> | 2019-09-14 16:44:22 +0530 |
|---|---|---|
| committer | Susant Sahani <ssahani@vmware.com> | 2019-09-17 12:09:59 +0200 |
| commit | 203d4df5732b1fdcf50db498ddeb74a934b21f87 (patch) | |
| tree | 1408614e0f70c9d3d170f7f4389d25511694b332 /src/libsystemd-network/radv-internal.h | |
| parent | 61cda4d7964ff00dfa6260f84219720d9b97671a (diff) | |
| download | systemd-203d4df5732b1fdcf50db498ddeb74a934b21f87.tar.gz | |
network: Add support to advertie ipv6 route
Implements https://tools.ietf.org/html/rfc4191
cat veth99.network
```
[Match]
Name=veth99
[Network]
DHCP=no
IPv6PrefixDelegation=yes
Address=2001:db8:0:1::1/64
[IPv6Prefix]
Prefix=2001:db8:0:1::4/64
[IPv6RoutePrefix]
Route=2001:db0:fff::/48
```
Wireshark
```
Frame 481: 142 bytes on wire (1136 bits), 142 bytes captured (1136 bits) on interface 0
Ethernet II, Src: 1e:04:f8:b8:2f:d4 (1e:04:f8:b8:2f:d4), Dst: IPv6mcast_01 (33:33:00:00:00:01)
Internet Protocol Version 6, Src: fe80::1c04:f8ff:feb8:2fd4, Dst: ff02::1
Internet Control Message Protocol v6
Type: Router Advertisement (134)
Code: 0
Checksum: 0xec77 [correct]
[Checksum Status: Good]
Cur hop limit: 0
Flags: 0x00, Prf (Default Router Preference): Medium
Router lifetime (s): 0
Reachable time (ms): 0
Retrans timer (ms): 0
ICMPv6 Option (Source link-layer address : 1e:04:f8:b8:2f:d4)
Type: Source link-layer address (1)
Length: 1 (8 bytes)
Link-layer address: 1e:04:f8:b8:2f:d4 (1e:04:f8:b8:2f:d4)
ICMPv6 Option (MTU : 1500)
Type: MTU (5)
Length: 1 (8 bytes)
Reserved
MTU: 1500
ICMPv6 Option (Prefix information : 2001:db8:0:1::4/64)
Type: Prefix information (3)
Length: 4 (32 bytes)
Prefix Length: 64
Flag: 0xc0, On-link flag(L), Autonomous address-configuration flag(A)
Valid Lifetime: 2592000
Preferred Lifetime: 604800
Reserved
Prefix: 2001:db8:0:1::4
ICMPv6 Option (Route Information : Medium 2001:db0:fff::/48)
Type: Route Information (24)
Length: 3 (24 bytes)
Prefix Length: 48
Flag: 0x00, Route Preference: Medium
...0 0... = Route Preference: Medium (0)
000. .000 = Reserved: 0
Route Lifetime: 604800
Prefix: 2001:db0:fff::
```
Diffstat (limited to 'src/libsystemd-network/radv-internal.h')
| -rw-r--r-- | src/libsystemd-network/radv-internal.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/libsystemd-network/radv-internal.h b/src/libsystemd-network/radv-internal.h index 7b09c7a66c..fb6617bedd 100644 --- a/src/libsystemd-network/radv-internal.h +++ b/src/libsystemd-network/radv-internal.h @@ -19,6 +19,7 @@ assert_cc(SD_RADV_DEFAULT_MIN_TIMEOUT_USEC <= SD_RADV_DEFAULT_MAX_TIMEOUT_USEC); #define SD_RADV_MIN_DELAY_BETWEEN_RAS 3 #define SD_RADV_MAX_RA_DELAY_TIME_USEC (500*USEC_PER_MSEC) +#define SD_RADV_OPT_ROUTE_INFORMATION 24 #define SD_RADV_OPT_RDNSS 25 #define SD_RADV_OPT_DNSSL 31 @@ -58,6 +59,9 @@ struct sd_radv { unsigned n_prefixes; LIST_HEAD(sd_radv_prefix, prefixes); + unsigned n_route_prefixes; + LIST_HEAD(sd_radv_route_prefix, route_prefixes); + size_t n_rdnss; struct sd_radv_opt_dns *rdnss; struct sd_radv_opt_dns *dnssl; @@ -98,6 +102,28 @@ struct sd_radv_prefix { usec_t preferred_until; }; +#define radv_route_prefix_opt__contents { \ + uint8_t type; \ + uint8_t length; \ + uint8_t prefixlen; \ + uint8_t flags_reserved; \ + be32_t lifetime; \ + struct in6_addr in6_addr; \ +} + +struct radv_route_prefix_opt radv_route_prefix_opt__contents; + +struct radv_route_prefix_opt__packed radv_route_prefix_opt__contents _packed_; +assert_cc(sizeof(struct radv_route_prefix_opt) == sizeof(struct radv_route_prefix_opt__packed)); + +struct sd_radv_route_prefix { + unsigned n_ref; + + struct radv_route_prefix_opt opt; + + LIST_FIELDS(struct sd_radv_route_prefix, prefix); +}; + #define log_radv_full(level, error, fmt, ...) log_internal(level, error, PROJECT_FILE, __LINE__, __func__, "RADV: " fmt, ##__VA_ARGS__) #define log_radv_errno(error, fmt, ...) log_radv_full(LOG_DEBUG, error, fmt, ##__VA_ARGS__) #define log_radv(fmt, ...) log_radv_errno(0, fmt, ##__VA_ARGS__) |