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authorTom Gundersen <teg@jklm.no>2014-12-08 19:54:06 +0100
committerTom Gundersen <teg@jklm.no>2014-12-08 22:13:40 +0100
commit45af44d47da6933b260c734ad9ff721f63f80a4d (patch)
tree0aae958af8aba2c93a202b9e681749cfc9e19b66
parent2173cbf847fc53ca24950e77958c902edecfc207 (diff)
networkd: manager - enumerate addresses globally, rather than per-link
The kernel always returns all addresses, rather than only for the given link, so let's only enumerate once.
-rw-r--r--src/libsystemd/sd-rtnl/rtnl-message.c9
-rw-r--r--src/network/networkd-dhcp4.c7
-rw-r--r--src/network/networkd-ipv4ll.c7
-rw-r--r--src/network/networkd-link.c63
-rw-r--r--src/network/networkd-link.h1
-rw-r--r--src/network/networkd-manager.c61
-rw-r--r--src/network/networkd.c6
-rw-r--r--src/network/networkd.h1
-rw-r--r--src/systemd/sd-rtnl.h1
9 files changed, 84 insertions, 72 deletions
diff --git a/src/libsystemd/sd-rtnl/rtnl-message.c b/src/libsystemd/sd-rtnl/rtnl-message.c
index ac920b2d30..5c627f96ab 100644
--- a/src/libsystemd/sd-rtnl/rtnl-message.c
+++ b/src/libsystemd/sd-rtnl/rtnl-message.c
@@ -1194,13 +1194,20 @@ uint32_t rtnl_message_get_serial(sd_rtnl_message *m) {
return m->hdr->nlmsg_seq;
}
+int sd_rtnl_message_is_error(sd_rtnl_message *m) {
+ assert_return(m, 0);
+ assert_return(m->hdr, 0);
+
+ return m->hdr->nlmsg_type == NLMSG_ERROR;
+}
+
int sd_rtnl_message_get_errno(sd_rtnl_message *m) {
struct nlmsgerr *err;
assert_return(m, -EINVAL);
assert_return(m->hdr, -EINVAL);
- if (m->hdr->nlmsg_type != NLMSG_ERROR)
+ if (!sd_rtnl_message_is_error(m))
return 0;
err = NLMSG_DATA(m->hdr);
diff --git a/src/network/networkd-dhcp4.c b/src/network/networkd-dhcp4.c
index ac59fd48c8..1c2edc5b87 100644
--- a/src/network/networkd-dhcp4.c
+++ b/src/network/networkd-dhcp4.c
@@ -296,11 +296,8 @@ static int dhcp4_address_handler(sd_rtnl *rtnl, sd_rtnl_message *m,
log_link_error(link, "could not set DHCPv4 address: %s",
strerror(-r));
link_enter_failed(link);
- } else if (r >= 0) {
- /* calling handler directly so take a ref */
- link_ref(link);
- link_get_address_handler(rtnl, m, link);
- }
+ } else if (r >= 0)
+ link_rtnl_process_address(rtnl, m, link->manager);
link_set_dhcp_routes(link);
diff --git a/src/network/networkd-ipv4ll.c b/src/network/networkd-ipv4ll.c
index beac939b39..339bf4d190 100644
--- a/src/network/networkd-ipv4ll.c
+++ b/src/network/networkd-ipv4ll.c
@@ -105,11 +105,8 @@ static int ipv4ll_address_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userd
if (r < 0 && r != -EEXIST) {
log_link_error(link, "could not set ipv4ll address: %s", strerror(-r));
link_enter_failed(link);
- } else if (r >= 0) {
- /* calling handler directly so take a ref */
- link_ref(link);
- link_get_address_handler(rtnl, m, link);
- }
+ } else if (r >= 0)
+ link_rtnl_process_address(rtnl, m, link->manager);
link->ipv4ll_address = true;
diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index 4ad0bb47f8..b9f1b992d3 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -576,32 +576,6 @@ int link_route_drop_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
return 1;
}
-int link_get_address_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
- _cleanup_link_unref_ Link *link = userdata;
- int r;
-
- assert(rtnl);
- assert(m);
- assert(link);
- assert(link->manager);
-
- for (; m; m = sd_rtnl_message_next(m)) {
- r = sd_rtnl_message_get_errno(m);
- if (r < 0) {
- log_link_debug(link, "getting address failed: %s",
- strerror(-r));
- continue;
- }
-
- r = link_rtnl_process_address(rtnl, m, link->manager);
- if (r < 0)
- log_link_warning(link, "could not process address: %s",
- strerror(-r));
- }
-
- return 1;
-}
-
static int address_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
_cleanup_link_unref_ Link *link = userdata;
int r;
@@ -622,11 +596,8 @@ static int address_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
r = sd_rtnl_message_get_errno(m);
if (r < 0 && r != -EEXIST)
log_link_warning_errno(link, -r, "%-*s: could not set address: %m", IFNAMSIZ, link->ifname);
- else if (r >= 0) {
- /* calling handler directly so take a ref */
- link_ref(link);
- link_get_address_handler(rtnl, m, link);
- }
+ else if (r >= 0)
+ link_rtnl_process_address(rtnl, m, link->manager);
if (link->link_messages == 0) {
log_link_debug(link, "addresses set");
@@ -1417,8 +1388,7 @@ int link_initialized(Link *link, struct udev_device *device) {
return 0;
}
-int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message,
- void *userdata) {
+int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata) {
Manager *m = userdata;
Link *link = NULL;
uint16_t type;
@@ -1434,6 +1404,14 @@ int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message,
assert(message);
assert(m);
+ if (sd_rtnl_message_is_error(message)) {
+ r = sd_rtnl_message_get_errno(message);
+ if (r < 0)
+ log_warning_errno(r, "rtnl: failed to receive address: %m");
+
+ return 0;
+ }
+
r = sd_rtnl_message_get_type(message, &type);
if (r < 0) {
log_warning("rtnl: could not get message type");
@@ -1441,8 +1419,11 @@ int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message,
}
r = sd_rtnl_message_addr_get_ifindex(message, &ifindex);
- if (r < 0 || ifindex <= 0) {
- log_warning("rtnl: received address message without valid ifindex, ignoring");
+ if (r < 0) {
+ log_warning_errno(r, "rtnl: could not get ifindex: %m");
+ return 0;
+ } else if (ifindex <= 0) {
+ log_warning("rtnl: received address message with invalid ifindex: %d", ifindex);
return 0;
} else {
r = link_get(m, ifindex, &link);
@@ -1594,18 +1575,6 @@ int link_add(Manager *m, sd_rtnl_message *message, Link **ret) {
log_link_debug(link, "link %d added", link->ifindex);
- r = sd_rtnl_message_new_addr(m->rtnl, &req, RTM_GETADDR, link->ifindex,
- 0);
- if (r < 0)
- return r;
-
- r = sd_rtnl_call_async(m->rtnl, req, link_get_address_handler, link, 0,
- NULL);
- if (r < 0)
- return r;
-
- link_ref(link);
-
if (detect_container(NULL) <= 0) {
/* not in a container, udev will be around */
sprintf(ifindex_str, "n%d", link->ifindex);
diff --git a/src/network/networkd-link.h b/src/network/networkd-link.h
index 56631757a9..31688c3ba3 100644
--- a/src/network/networkd-link.h
+++ b/src/network/networkd-link.h
@@ -99,7 +99,6 @@ int link_get(Manager *m, int ifindex, Link **ret);
int link_add(Manager *manager, sd_rtnl_message *message, Link **ret);
void link_drop(Link *link);
-int link_get_address_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata);
int link_address_drop_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata);
int link_route_drop_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata);
diff --git a/src/network/networkd-manager.c b/src/network/networkd-manager.c
index a708e905f4..fe9008a3df 100644
--- a/src/network/networkd-manager.c
+++ b/src/network/networkd-manager.c
@@ -236,22 +236,33 @@ static int manager_rtnl_process_link(sd_rtnl *rtnl, sd_rtnl_message *message, vo
assert(message);
assert(m);
+ if (sd_rtnl_message_is_error(message)) {
+ r = sd_rtnl_message_get_errno(message);
+ if (r < 0)
+ log_warning_errno(r, "rtnl: could not receive link: %m");
+
+ return 0;
+ }
+
r = sd_rtnl_message_get_type(message, &type);
if (r < 0) {
- log_warning("rtnl: could not get message type");
+ log_warning_errno(r, "rtnl: could not get message type: %m");
return 0;
}
r = sd_rtnl_message_link_get_ifindex(message, &ifindex);
- if (r < 0 || ifindex <= 0) {
- log_warning("rtnl: received link message without valid ifindex");
+ if (r < 0) {
+ log_warning_errno(r, "rtnl: could not get ifindex: %m");
+ return 0;
+ } else if (ifindex <= 0) {
+ log_warning("rtnl: received link message with invalid ifindex: %d", ifindex);
return 0;
} else
link_get(m, ifindex, &link);
r = sd_rtnl_message_read_string(message, IFLA_IFNAME, &name);
- if (r < 0 || !name) {
- log_warning("rtnl: received link message without valid ifname");
+ if (r < 0) {
+ log_warning_errno(r, "rtnl: received link message without ifname: %m");
return 0;
} else
netdev_get(m, name, &netdev);
@@ -271,7 +282,7 @@ static int manager_rtnl_process_link(sd_rtnl *rtnl, sd_rtnl_message *message, vo
/* netdev exists, so make sure the ifindex matches */
r = netdev_set_ifindex(netdev, message);
if (r < 0) {
- log_debug("could not set ifindex on netdev");
+ log_debug_errno(r, "could not set ifindex on netdev: %m");
return 0;
}
}
@@ -298,7 +309,7 @@ static int manager_rtnl_process_link(sd_rtnl *rtnl, sd_rtnl_message *message, vo
int manager_rtnl_enumerate_links(Manager *m) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
sd_rtnl_message *link;
- int r, k;
+ int r;
assert(m);
assert(m->rtnl);
@@ -316,16 +327,40 @@ int manager_rtnl_enumerate_links(Manager *m) {
return r;
for (link = reply; link; link = sd_rtnl_message_next(link)) {
- uint16_t type;
+ int k;
- k = sd_rtnl_message_get_type(link, &type);
+ k = manager_rtnl_process_link(m->rtnl, link, m);
if (k < 0)
- return k;
+ r = k;
+ }
- if (type != RTM_NEWLINK)
- continue;
+ return r;
+}
- k = manager_rtnl_process_link(m->rtnl, link, m);
+int manager_rtnl_enumerate_addresses(Manager *m) {
+ _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
+ sd_rtnl_message *addr;
+ int r;
+
+ assert(m);
+ assert(m->rtnl);
+
+ r = sd_rtnl_message_new_addr(m->rtnl, &req, RTM_GETADDR, 0, 0);
+ if (r < 0)
+ return r;
+
+ r = sd_rtnl_message_request_dump(req, true);
+ if (r < 0)
+ return r;
+
+ r = sd_rtnl_call(m->rtnl, req, 0, &reply);
+ if (r < 0)
+ return r;
+
+ for (addr = reply; addr; addr = sd_rtnl_message_next(addr)) {
+ int k;
+
+ k = link_rtnl_process_address(m->rtnl, addr, m);
if (k < 0)
r = k;
}
diff --git a/src/network/networkd.c b/src/network/networkd.c
index 430d615f90..0b386d4069 100644
--- a/src/network/networkd.c
+++ b/src/network/networkd.c
@@ -110,6 +110,12 @@ int main(int argc, char *argv[]) {
goto out;
}
+ r = manager_rtnl_enumerate_addresses(m);
+ if (r < 0) {
+ log_error_errno(r, "Could not enumerate links: %m");
+ goto out;
+ }
+
sd_notify(false,
"READY=1\n"
"STATUS=Processing requests...");
diff --git a/src/network/networkd.h b/src/network/networkd.h
index 5f553fb3b9..4cdcd73c5d 100644
--- a/src/network/networkd.h
+++ b/src/network/networkd.h
@@ -203,6 +203,7 @@ int manager_load_config(Manager *m);
bool manager_should_reload(Manager *m);
int manager_rtnl_enumerate_links(Manager *m);
+int manager_rtnl_enumerate_addresses(Manager *m);
int manager_rtnl_listen(Manager *m);
int manager_udev_listen(Manager *m);
diff --git a/src/systemd/sd-rtnl.h b/src/systemd/sd-rtnl.h
index da8610c0a4..b05f83ce41 100644
--- a/src/systemd/sd-rtnl.h
+++ b/src/systemd/sd-rtnl.h
@@ -81,6 +81,7 @@ sd_rtnl_message *sd_rtnl_message_ref(sd_rtnl_message *m);
sd_rtnl_message *sd_rtnl_message_unref(sd_rtnl_message *m);
int sd_rtnl_message_request_dump(sd_rtnl_message *m, int dump);
+int sd_rtnl_message_is_error(sd_rtnl_message *m);
int sd_rtnl_message_get_errno(sd_rtnl_message *m);
int sd_rtnl_message_get_type(sd_rtnl_message *m, uint16_t *type);
int sd_rtnl_message_is_broadcast(sd_rtnl_message *m);