diff options
| author | Umut Tezduyar Lindskog <umut.tezduyar@axis.com> | 2014-04-02 21:31:12 +0200 |
|---|---|---|
| committer | Tom Gundersen <teg@jklm.no> | 2014-04-03 16:00:25 +0200 |
| commit | aba496a58acf9d9c61314de71353550e579f85ee (patch) | |
| tree | e554123004bba327c3114539142047d4c124f40a /src/libsystemd-network/sd-ipv4ll.c | |
| parent | 3e790eae01ce74f94a5233adeab12c64508916e0 (diff) | |
networkd: smooth transition from ipv4ll to dhcp address
Currently when both ipv4ll and dhcp are enabled, ipv4ll
address (if one has been claimed) is removed when dhcp
address is aquired. This is not the best thing to do
since there might be clients unaware of the removal
trying to communicate.
This patch provides a smooth transition between ipv4ll
and dhcp. If ipv4ll address was claimed [1] before dhcp,
address is marked as deprecated. Deprecated address is still
a valid address and packets can be received on it but address
cannot be selected as a source address. If dhcp lease cannot
be extended, then ipv4ll address is marked as valid again.
[1] If there is no collision, claiming IPv4LL takes between 4 to
7 seconds.
Diffstat (limited to 'src/libsystemd-network/sd-ipv4ll.c')
| -rw-r--r-- | src/libsystemd-network/sd-ipv4ll.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/libsystemd-network/sd-ipv4ll.c b/src/libsystemd-network/sd-ipv4ll.c index a201139b08..81fe85b68b 100644 --- a/src/libsystemd-network/sd-ipv4ll.c +++ b/src/libsystemd-network/sd-ipv4ll.c @@ -481,6 +481,12 @@ error: return r; } +bool sd_ipv4ll_is_running(sd_ipv4ll *ll) { + assert_return(ll, -EINVAL); + + return ll->state != IPV4LL_STATE_INIT; +} + #define HASH_KEY SD_ID128_MAKE(df,04,22,98,3f,ad,14,52,f9,87,2e,d1,9c,70,e2,f2) int sd_ipv4ll_start (sd_ipv4ll *ll) { |