diff options
Diffstat (limited to 'src/network')
| -rw-r--r-- | src/network/networkd-link.c | 108 | ||||
| -rw-r--r-- | src/network/networkd.h | 1 |
2 files changed, 51 insertions, 58 deletions
diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c index 723b919a5e..51cd1d62e8 100644 --- a/src/network/networkd-link.c +++ b/src/network/networkd-link.c @@ -1098,9 +1098,24 @@ static int link_acquire_conf(Link *link) { return 0; } -static int link_update_flags(Link *link, unsigned flags) { - unsigned flags_added, flags_removed, generic_flags; - bool carrier_gained, carrier_lost; +static bool link_has_carrier(unsigned flags, uint8_t operstate) { + /* see Documentation/networking/operstates.txt in the kernel sources */ + + if (operstate == IF_OPER_UP) + return true; + + if (operstate == IF_OPER_UNKNOWN) + /* operstate may not be implemented, so fall back to flags */ + if ((flags & IFF_LOWER_UP) && !(flags & IFF_DORMANT)) + return true; + + return false; +} + +static int link_update_flags(Link *link, sd_rtnl_message *m) { + unsigned flags, flags_added, flags_removed, generic_flags; + uint8_t operstate; + bool carrier_gained = false, carrier_lost = false; int r; assert(link); @@ -1108,7 +1123,19 @@ static int link_update_flags(Link *link, unsigned flags) { if (link->state == LINK_STATE_FAILED) return 0; - if (link->flags == flags) + r = sd_rtnl_message_link_get_flags(m, &flags); + if (r < 0) { + log_warning_link(link, "Could not get link flags"); + return r; + } + + r = sd_rtnl_message_read_u8(m, IFLA_OPERSTATE, &operstate); + if (r < 0) + /* if we got a message without operstate, take it to mean + the state was unchanged */ + operstate = link->operstate; + + if ((link->flags == flags) && (link->operstate == operstate)) return 0; flags_added = (link->flags ^ flags) & flags; @@ -1117,26 +1144,6 @@ static int link_update_flags(Link *link, unsigned flags) { IFF_MULTICAST | IFF_BROADCAST | IFF_PROMISC | IFF_NOARP | IFF_MASTER | IFF_SLAVE); - /* consider link to have carrier when LOWER_UP and !DORMANT - - TODO: use proper operstates once we start supporting 802.1X - - see Documentation/networking/operstates.txt in the kernel sources - */ - carrier_gained = (((flags_added & IFF_LOWER_UP) && !(flags & IFF_DORMANT)) || - ((flags_removed & IFF_DORMANT) && (flags & IFF_LOWER_UP))); - carrier_lost = ((link->flags & IFF_LOWER_UP) && !(link->flags & IFF_DORMANT)) && - ((flags_removed & IFF_LOWER_UP) || (flags_added & IFF_DORMANT)); - - link->flags = flags; - - if (!link->network) - /* not currently managing this link - we track state changes, but don't log them - they will be logged if and when a network is - applied */ - return 0; - if (flags_added & IFF_UP) log_info_link(link, "link is up"); else if (flags_removed & IFF_UP) @@ -1196,13 +1203,20 @@ static int link_update_flags(Link *link, unsigned flags) { log_debug_link(link, "unknown link flags lost: %#.5x (ignoring)", flags_removed & generic_flags); + carrier_gained = !link_has_carrier(link->flags, link->operstate) && + link_has_carrier(flags, operstate); + carrier_lost = link_has_carrier(link->flags, link->operstate) && + !link_has_carrier(flags, operstate); + + link->flags = flags; + link->operstate = operstate; + if (carrier_gained) { log_info_link(link, "gained carrier"); - if (link->network->dhcp || link->network->ipv4ll) { + if (link->network) { r = link_acquire_conf(link); if (r < 0) { - log_warning_link(link, "Could not acquire configuration: %s", strerror(-r)); link_enter_failed(link); return r; } @@ -1210,22 +1224,10 @@ static int link_update_flags(Link *link, unsigned flags) { } else if (carrier_lost) { log_info_link(link, "lost carrier"); - if (link->network->dhcp) { - r = sd_dhcp_client_stop(link->dhcp_client); - if (r < 0) { - log_warning_link(link, "Could not stop DHCPv4 client: %s", strerror(-r)); - link_enter_failed(link); - return r; - } - } - - if (link->network->ipv4ll) { - r = sd_ipv4ll_stop(link->ipv4ll); - if (r < 0) { - log_warning_link(link, "Could not stop IPv4 link-local: %s", strerror(-r)); - link_enter_failed(link); - return r; - } + r = link_stop_clients(link); + if (r < 0) { + link_enter_failed(link); + return r; } } @@ -1506,12 +1508,16 @@ static int link_configure(Link *link) { } } + if (link_has_carrier(link->flags, link->operstate)) + r = link_acquire_conf(link); + if (r < 0) + return r; + return link_enter_enslave(link); } int link_initialized(Link *link, struct udev_device *device) { Network *network; - unsigned flags; int r; assert(link); @@ -1541,13 +1547,6 @@ int link_initialized(Link *link, struct udev_device *device) { if (r < 0) return r; - /* re-trigger all state updates */ - flags = link->flags; - link->flags = 0; - r = link_update_flags(link, flags); - if (r < 0) - return r; - return 0; } @@ -1591,7 +1590,6 @@ int link_add(Manager *m, sd_rtnl_message *message, Link **ret) { } int link_update(Link *link, sd_rtnl_message *m) { - unsigned flags; struct ether_addr mac; char *ifname; int r; @@ -1659,13 +1657,7 @@ int link_update(Link *link, sd_rtnl_message *m) { } } - r = sd_rtnl_message_link_get_flags(m, &flags); - if (r < 0) { - log_warning_link(link, "Could not get link flags"); - return r; - } - - return link_update_flags(link, flags); + return link_update_flags(link, m); } int link_save(Link *link) { diff --git a/src/network/networkd.h b/src/network/networkd.h index f481ddec5c..d31844aefd 100644 --- a/src/network/networkd.h +++ b/src/network/networkd.h @@ -206,6 +206,7 @@ struct Link { struct udev_device *udev_device; unsigned flags; + uint8_t operstate; Network *network; |