[systemd-commits] 4 commits - src/network TODO
Tom Gundersen
tomegun at kemper.freedesktop.org
Thu Sep 4 05:29:51 PDT 2014
TODO | 3
src/network/networkd-link.c | 244 ++++++++++++++++++++++----------------------
src/network/networkd-link.h | 2
3 files changed, 128 insertions(+), 121 deletions(-)
New commits:
commit a821cbb00c3f6e33d99e9e38ec1538a16dd90ce3
Author: Tom Gundersen <teg at jklm.no>
Date: Thu Sep 4 14:16:56 2014 +0200
networkd: link - clarify log message when receiving address for unknown link
diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index f726e2b..bcd2e6d 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -1336,7 +1336,7 @@ int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message,
} else {
r = link_get(m, ifindex, &link);
if (r < 0 || !link) {
- log_warning("rtnl: received address for a nonexistent link, ignoring");
+ log_warning("rtnl: received address for a nonexistent link (%d), ignoring", ifindex);
return 0;
}
}
commit bd2efe9219a3791b47c2c5c2ef0fe2579ffd547d
Author: Tom Gundersen <teg at jklm.no>
Date: Thu Sep 4 13:40:24 2014 +0200
networkd: link - do not manage loopback links
Fixes https://bugs.freedesktop.org/show_bug.cgi?id=83134.
diff --git a/TODO b/TODO
index f0f2bcb..380fd49 100644
--- a/TODO
+++ b/TODO
@@ -78,9 +78,6 @@ Features:
- ipv4ll with multiple interfaces doesn't work when both dhcp and
ipv4ll is used. for some reasons the kernel will currently pick an
ipv4ll source address to reach non-ipv4ll gateways.
- - dhcp and ipv4ll should probably be skipped for "lo" devices, even
- if the user has a catchall .network file installed, that might
- theoretically match it.
- the DHCP lease data (such as NTP/DNS) is still made available when
a carrier is lost on a link. It should be removed instantly.
- .network setting that allows overriding of the hostname to send to the dhcp server
diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index 1b7b189..f726e2b 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -1250,6 +1250,12 @@ static int link_initialized_and_synced(sd_rtnl *rtnl, sd_rtnl_message *m,
} else if (r < 0)
return r;
+ if (link->flags & IFF_LOOPBACK) {
+ log_debug_link(link, "matching network ignored for loopback link");
+ link_enter_unmanaged(link);
+ return 1;
+ }
+
r = network_apply(link->manager, network, link);
if (r < 0)
return r;
commit 51d18171529dcdad1366e422e42d538434af0ff6
Author: Tom Gundersen <teg at jklm.no>
Date: Thu Sep 4 14:10:43 2014 +0200
networkd: link - save link flags when the link is added
Don't wait for the link to be fully synchronised.
diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index 57e7194..1b7b189 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -35,6 +35,85 @@
#include "dhcp-lease-internal.h"
+#define FLAG_STRING(string, flag, old, new) \
+ (((old ^ new) & flag) \
+ ? ((old & flag) ? (" -" string) : (" +" string)) \
+ : "")
+
+static int link_update_flags(Link *link, sd_rtnl_message *m) {
+ unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags;
+ uint8_t operstate;
+ int r;
+
+ assert(link);
+
+ 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->kernel_operstate;
+
+ if ((link->flags == flags) && (link->kernel_operstate == operstate))
+ return 0;
+
+ if (link->flags != flags) {
+ log_debug_link(link, "flags change:%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
+ FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags),
+ FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags),
+ FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags),
+ FLAG_STRING("UP", IFF_UP, link->flags, flags),
+ FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags),
+ FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags),
+ FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags),
+ FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags),
+ FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags),
+ FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags),
+ FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags),
+ FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags),
+ FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags),
+ FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags),
+ FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags),
+ FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags),
+ FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags),
+ FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags),
+ FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags));
+
+ unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP |
+ IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING |
+ IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT |
+ IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL |
+ IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP |
+ IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO);
+ unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags);
+ unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags);
+
+ /* link flags are currently at most 18 bits, let's align to
+ * printing 20 */
+ if (unknown_flags_added)
+ log_debug_link(link,
+ "unknown link flags gained: %#.5x (ignoring)",
+ unknown_flags_added);
+
+ if (unknown_flags_removed)
+ log_debug_link(link,
+ "unknown link flags lost: %#.5x (ignoring)",
+ unknown_flags_removed);
+ }
+
+ link->flags = flags;
+ link->kernel_operstate = operstate;
+
+ link_save(link);
+
+ return 0;
+}
+
static int link_new(Manager *manager, sd_rtnl_message *message, Link **ret) {
_cleanup_link_unref_ Link *link = NULL;
uint16_t type;
@@ -95,6 +174,10 @@ static int link_new(Manager *manager, sd_rtnl_message *message, Link **ret) {
if (r < 0)
return r;
+ r = link_update_flags(link, message);
+ if (r < 0)
+ return r;
+
*ret = link;
link = NULL;
@@ -877,85 +960,6 @@ bool link_has_carrier(Link *link) {
return false;
}
-#define FLAG_STRING(string, flag, old, new) \
- (((old ^ new) & flag) \
- ? ((old & flag) ? (" -" string) : (" +" string)) \
- : "")
-
-static int link_update_flags(Link *link, sd_rtnl_message *m) {
- unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags;
- uint8_t operstate;
- int r;
-
- assert(link);
-
- 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->kernel_operstate;
-
- if ((link->flags == flags) && (link->kernel_operstate == operstate))
- return 0;
-
- if (link->flags != flags) {
- log_debug_link(link, "flags change:%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
- FLAG_STRING("LOOPBACK", IFF_LOOPBACK, link->flags, flags),
- FLAG_STRING("MASTER", IFF_MASTER, link->flags, flags),
- FLAG_STRING("SLAVE", IFF_SLAVE, link->flags, flags),
- FLAG_STRING("UP", IFF_UP, link->flags, flags),
- FLAG_STRING("DORMANT", IFF_DORMANT, link->flags, flags),
- FLAG_STRING("LOWER_UP", IFF_LOWER_UP, link->flags, flags),
- FLAG_STRING("RUNNING", IFF_RUNNING, link->flags, flags),
- FLAG_STRING("MULTICAST", IFF_MULTICAST, link->flags, flags),
- FLAG_STRING("BROADCAST", IFF_BROADCAST, link->flags, flags),
- FLAG_STRING("POINTOPOINT", IFF_POINTOPOINT, link->flags, flags),
- FLAG_STRING("PROMISC", IFF_PROMISC, link->flags, flags),
- FLAG_STRING("ALLMULTI", IFF_ALLMULTI, link->flags, flags),
- FLAG_STRING("PORTSEL", IFF_PORTSEL, link->flags, flags),
- FLAG_STRING("AUTOMEDIA", IFF_AUTOMEDIA, link->flags, flags),
- FLAG_STRING("DYNAMIC", IFF_DYNAMIC, link->flags, flags),
- FLAG_STRING("NOARP", IFF_NOARP, link->flags, flags),
- FLAG_STRING("NOTRAILERS", IFF_NOTRAILERS, link->flags, flags),
- FLAG_STRING("DEBUG", IFF_DEBUG, link->flags, flags),
- FLAG_STRING("ECHO", IFF_ECHO, link->flags, flags));
-
- unknown_flags = ~(IFF_LOOPBACK | IFF_MASTER | IFF_SLAVE | IFF_UP |
- IFF_DORMANT | IFF_LOWER_UP | IFF_RUNNING |
- IFF_MULTICAST | IFF_BROADCAST | IFF_POINTOPOINT |
- IFF_PROMISC | IFF_ALLMULTI | IFF_PORTSEL |
- IFF_AUTOMEDIA | IFF_DYNAMIC | IFF_NOARP |
- IFF_NOTRAILERS | IFF_DEBUG | IFF_ECHO);
- unknown_flags_added = ((link->flags ^ flags) & flags & unknown_flags);
- unknown_flags_removed = ((link->flags ^ flags) & link->flags & unknown_flags);
-
- /* link flags are currently at most 18 bits, let's align to
- * printing 20 */
- if (unknown_flags_added)
- log_debug_link(link,
- "unknown link flags gained: %#.5x (ignoring)",
- unknown_flags_added);
-
- if (unknown_flags_removed)
- log_debug_link(link,
- "unknown link flags lost: %#.5x (ignoring)",
- unknown_flags_removed);
- }
-
- link->flags = flags;
- link->kernel_operstate = operstate;
-
- link_save(link);
-
- return 0;
-}
-
static int link_up_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
_cleanup_link_unref_ Link *link = userdata;
int r;
commit a61bb41c29c370a7e64285525ec35baac8944149
Author: Tom Gundersen <teg at jklm.no>
Date: Thu Sep 4 14:05:54 2014 +0200
networkd: move carrier gained/lost handling from link_update_flags() to link_update()
This allows us also to simplify link_has_carrier() a bit.
diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index dff3270..57e7194 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -863,15 +863,15 @@ static int link_acquire_conf(Link *link) {
return 0;
}
-bool link_has_carrier(unsigned flags, uint8_t operstate) {
+bool link_has_carrier(Link *link) {
/* see Documentation/networking/operstates.txt in the kernel sources */
- if (operstate == IF_OPER_UP)
+ if (link->kernel_operstate == IF_OPER_UP)
return true;
- if (operstate == IF_OPER_UNKNOWN)
+ if (link->kernel_operstate == IF_OPER_UNKNOWN)
/* operstate may not be implemented, so fall back to flags */
- if ((flags & IFF_LOWER_UP) && !(flags & IFF_DORMANT))
+ if ((link->flags & IFF_LOWER_UP) && !(link->flags & IFF_DORMANT))
return true;
return false;
@@ -885,7 +885,6 @@ bool link_has_carrier(unsigned flags, uint8_t operstate) {
static int link_update_flags(Link *link, sd_rtnl_message *m) {
unsigned flags, unknown_flags_added, unknown_flags_removed, unknown_flags;
uint8_t operstate;
- bool carrier_gained = false, carrier_lost = false;
int r;
assert(link);
@@ -949,40 +948,11 @@ static int link_update_flags(Link *link, sd_rtnl_message *m) {
unknown_flags_removed);
}
- carrier_gained = !link_has_carrier(link->flags, link->kernel_operstate) &&
- link_has_carrier(flags, operstate);
- carrier_lost = link_has_carrier(link->flags, link->kernel_operstate) &&
- !link_has_carrier(flags, operstate);
-
link->flags = flags;
link->kernel_operstate = operstate;
link_save(link);
- if (link->state == LINK_STATE_FAILED ||
- link->state == LINK_STATE_UNMANAGED)
- return 0;
-
- if (carrier_gained) {
- log_info_link(link, "gained carrier");
-
- if (link->network) {
- r = link_acquire_conf(link);
- if (r < 0) {
- link_enter_failed(link);
- return r;
- }
- }
- } else if (carrier_lost) {
- log_info_link(link, "lost carrier");
-
- r = link_stop_clients(link);
- if (r < 0) {
- link_enter_failed(link);
- return r;
- }
- }
-
return 0;
}
@@ -1244,7 +1214,7 @@ static int link_configure(Link *link) {
return r;
}
- if (link_has_carrier(link->flags, link->kernel_operstate)) {
+ if (link_has_carrier(link)) {
r = link_acquire_conf(link);
if (r < 0)
return r;
@@ -1554,6 +1524,7 @@ int link_update(Link *link, sd_rtnl_message *m) {
struct ether_addr mac;
const char *ifname;
uint32_t mtu;
+ bool had_carrier, carrier_gained, carrier_lost;
int r;
assert(link);
@@ -1650,7 +1621,36 @@ int link_update(Link *link, sd_rtnl_message *m) {
}
}
- return link_update_flags(link, m);
+ had_carrier = link_has_carrier(link);
+
+ r = link_update_flags(link, m);
+ if (r < 0)
+ return r;
+
+ carrier_gained = !had_carrier && link_has_carrier(link);
+ carrier_lost = had_carrier && !link_has_carrier(link);
+
+ if (carrier_gained) {
+ log_info_link(link, "gained carrier");
+
+ if (link->network) {
+ r = link_acquire_conf(link);
+ if (r < 0) {
+ link_enter_failed(link);
+ return r;
+ }
+ }
+ } else if (carrier_lost) {
+ log_info_link(link, "lost carrier");
+
+ r = link_stop_clients(link);
+ if (r < 0) {
+ link_enter_failed(link);
+ return r;
+ }
+ }
+
+ return 0;
}
static void link_update_operstate(Link *link) {
@@ -1659,7 +1659,7 @@ static void link_update_operstate(Link *link) {
if (link->kernel_operstate == IF_OPER_DORMANT)
link->operstate = LINK_OPERSTATE_DORMANT;
- else if (link_has_carrier(link->flags, link->kernel_operstate)) {
+ else if (link_has_carrier(link)) {
Address *address;
uint8_t scope = RT_SCOPE_NOWHERE;
diff --git a/src/network/networkd-link.h b/src/network/networkd-link.h
index 0f73ec7..7acf404 100644
--- a/src/network/networkd-link.h
+++ b/src/network/networkd-link.h
@@ -113,7 +113,7 @@ int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *use
int link_save(Link *link);
-bool link_has_carrier(unsigned flags, uint8_t operstate);
+bool link_has_carrier(Link *link);
int link_set_mtu(Link *link, uint32_t mtu);
int link_set_hostname(Link *link, const char *hostname);
More information about the systemd-commits
mailing list