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author | Yu Watanabe <watanabe.yu+github@gmail.com> | 2021-06-21 02:29:46 +0900 |
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committer | Yu Watanabe <watanabe.yu+github@gmail.com> | 2021-07-01 00:49:02 +0900 |
commit | fcb7345950beb1f21237df93e1e288c3e222493e (patch) | |
tree | eee434e65b038d887f9b8f0a159b06b7ae62ef57 /src/libsystemd-network/sd-ipv4acd.c | |
parent | d17ed573aae791ee440a1c84746868194896aa71 (diff) | |
download | systemd-fcb7345950beb1f21237df93e1e288c3e222493e.tar.gz |
sd-ipv4acd: allow to change MAC address without restarting sd-ipv4acd
This also makes sd_ipv4acd_set_mac() refuses null MAC address.
Diffstat (limited to 'src/libsystemd-network/sd-ipv4acd.c')
-rw-r--r-- | src/libsystemd-network/sd-ipv4acd.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/libsystemd-network/sd-ipv4acd.c b/src/libsystemd-network/sd-ipv4acd.c index ee4f215002..d763ba8e62 100644 --- a/src/libsystemd-network/sd-ipv4acd.c +++ b/src/libsystemd-network/sd-ipv4acd.c @@ -432,12 +432,24 @@ const char *sd_ipv4acd_get_ifname(sd_ipv4acd *acd) { } int sd_ipv4acd_set_mac(sd_ipv4acd *acd, const struct ether_addr *addr) { + int r; + assert_return(acd, -EINVAL); assert_return(addr, -EINVAL); - assert_return(acd->state == IPV4ACD_STATE_INIT, -EBUSY); + assert_return(!ether_addr_is_null(addr), -EINVAL); acd->mac_addr = *addr; + if (!sd_ipv4acd_is_running(acd)) + return 0; + + assert(acd->fd >= 0); + r = arp_update_filter(acd->fd, &acd->address, &acd->mac_addr); + if (r < 0) { + ipv4acd_reset(acd); + return r; + } + return 0; } |