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Diffstat (limited to 'src/network/networkd-link.c')
-rw-r--r--src/network/networkd-link.c140
1 files changed, 81 insertions, 59 deletions
diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index 63c7a8bf24..12944a03a3 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -23,16 +23,16 @@
#include <linux/if.h>
#include <unistd.h>
-#include "networkd-link.h"
-#include "networkd-netdev.h"
-#include "libudev-private.h"
-#include "udev-util.h"
#include "util.h"
#include "virt.h"
+#include "fileio.h"
#include "bus-util.h"
+#include "udev-util.h"
+#include "libudev-private.h"
#include "network-internal.h"
+#include "networkd-link.h"
+#include "networkd-netdev.h"
#include "conf-parser.h"
-
#include "dhcp-lease-internal.h"
static bool link_dhcp6_enabled(Link *link) {
@@ -82,12 +82,22 @@ static bool link_lldp_enabled(Link *link) {
if (!link->network)
return false;
- if(link->network->bridge)
+ if (link->network->bridge)
return false;
return link->network->lldp;
}
+static bool link_ip_forward_enabled(Link *link) {
+ if (link->flags & IFF_LOOPBACK)
+ return false;
+
+ if (!link->network)
+ return false;
+
+ return link->network->ip_forward;
+}
+
#define FLAG_STRING(string, flag, old, new) \
(((old ^ new) & flag) \
? ((old & flag) ? (" -" string) : (" +" string)) \
@@ -653,9 +663,7 @@ static int link_enter_set_addresses(Link *link) {
LIST_FOREACH(addresses, ad, link->network->static_addresses) {
r = address_configure(ad, link, &address_handler);
if (r < 0) {
- log_link_warning(link,
- "could not set addresses: %s",
- strerror(-r));
+ log_link_warning_errno(link, r, "Could not set addresses: %m");
link_enter_failed(link);
return r;
}
@@ -1217,6 +1225,18 @@ static int link_enter_join_netdev(Link *link) {
return 0;
}
+static int link_set_ip_forward(Link *link) {
+ const char *p = NULL;
+ int r;
+
+ p = strappenda("/proc/sys/net/ipv4/conf/", link->ifname, "/forwarding");
+ r = write_string_file_no_create(p, link_ip_forward_enabled(link) ? "1" : "0");
+ if (r < 0)
+ log_link_warning_errno(link, r, "Cannot configure IP forwarding for interface: %m");
+
+ return 0;
+}
+
static int link_configure(Link *link) {
int r;
@@ -1228,6 +1248,10 @@ static int link_configure(Link *link) {
if (r < 0)
return r;
+ r = link_set_ip_forward(link);
+ if (r < 0)
+ return r;
+
if (link_ipv4ll_enabled(link)) {
r = ipv4ll_configure(link);
if (r < 0)
@@ -1364,16 +1388,27 @@ int link_initialized(Link *link, struct udev_device *device) {
return 0;
}
+static Address* link_get_equal_address(Link *link, Address *needle) {
+ Address *i;
+
+ assert(link);
+ assert(needle);
+
+ LIST_FOREACH(addresses, i, link->addresses)
+ if (address_equal(i, needle))
+ return i;
+
+ return NULL;
+}
+
int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *userdata) {
Manager *m = userdata;
Link *link = NULL;
uint16_t type;
_cleanup_address_free_ Address *address = NULL;
- Address *ad;
- char buf[INET6_ADDRSTRLEN];
- char valid_buf[FORMAT_TIMESPAN_MAX];
+ Address *existing;
+ char buf[INET6_ADDRSTRLEN], valid_buf[FORMAT_TIMESPAN_MAX];
const char *valid_str = NULL;
- bool address_dropped = false;
int r, ifindex;
assert(rtnl);
@@ -1415,50 +1450,42 @@ int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *use
r = sd_rtnl_message_addr_get_family(message, &address->family);
if (r < 0 || !IN_SET(address->family, AF_INET, AF_INET6)) {
- log_link_warning(link,
- "rtnl: received address with invalid family, ignoring");
+ log_link_warning(link, "rtnl: received address with invalid family, ignoring");
return 0;
}
r = sd_rtnl_message_addr_get_prefixlen(message, &address->prefixlen);
if (r < 0) {
- log_link_warning(link,
- "rtnl: received address with invalid prefixlen, ignoring");
+ log_link_warning(link, "rtnl: received address with invalid prefixlen, ignoring");
return 0;
}
r = sd_rtnl_message_addr_get_scope(message, &address->scope);
if (r < 0) {
- log_link_warning(link,
- "rtnl: received address with invalid scope, ignoring");
+ log_link_warning(link, "rtnl: received address with invalid scope, ignoring");
return 0;
}
r = sd_rtnl_message_addr_get_flags(message, &address->flags);
if (r < 0) {
- log_link_warning(link,
- "rtnl: received address with invalid flags, ignoring");
+ log_link_warning(link, "rtnl: received address with invalid flags, ignoring");
return 0;
}
switch (address->family) {
case AF_INET:
- r = sd_rtnl_message_read_in_addr(message, IFA_LOCAL,
- &address->in_addr.in);
+ r = sd_rtnl_message_read_in_addr(message, IFA_LOCAL, &address->in_addr.in);
if (r < 0) {
- log_link_warning(link,
- "rtnl: received address without valid address, ignoring");
+ log_link_warning(link, "rtnl: received address without valid address, ignoring");
return 0;
}
break;
case AF_INET6:
- r = sd_rtnl_message_read_in6_addr(message, IFA_ADDRESS,
- &address->in_addr.in6);
+ r = sd_rtnl_message_read_in6_addr(message, IFA_ADDRESS, &address->in_addr.in6);
if (r < 0) {
- log_link_warning(link,
- "rtnl: received address without valid address, ignoring");
+ log_link_warning(link, "rtnl: received address without valid address, ignoring");
return 0;
}
@@ -1468,14 +1495,12 @@ int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *use
assert_not_reached("invalid address family");
}
- if (!inet_ntop(address->family, &address->in_addr, buf,
- INET6_ADDRSTRLEN)) {
+ if (!inet_ntop(address->family, &address->in_addr, buf, INET6_ADDRSTRLEN)) {
log_link_warning(link, "could not print address");
return 0;
}
- r = sd_rtnl_message_read_cache_info(message, IFA_CACHEINFO,
- &address->cinfo);
+ r = sd_rtnl_message_read_cache_info(message, IFA_CACHEINFO, &address->cinfo);
if (r >= 0) {
if (address->cinfo.ifa_valid == CACHE_INFO_INFINITY_LIFE_TIME)
valid_str = "ever";
@@ -1485,43 +1510,40 @@ int link_rtnl_process_address(sd_rtnl *rtnl, sd_rtnl_message *message, void *use
USEC_PER_SEC);
}
- LIST_FOREACH(addresses, ad, link->addresses) {
- if (address_equal(ad, address)) {
- LIST_REMOVE(addresses, link->addresses, ad);
+ existing = link_get_equal_address(link, address);
+
+ switch (type) {
+ case RTM_NEWADDR:
+ if (existing) {
+ log_link_debug(link, "Updating address: %s/%u (valid for %s)", buf, address->prefixlen, valid_str);
- address_free(ad);
- address_dropped = true;
+ existing->scope = address->scope;
+ existing->flags = address->flags;
+ existing->cinfo = address->cinfo;
- break;
- }
- }
+ } else {
+ log_link_debug(link, "Adding address: %s/%u (valid for %s)", buf, address->prefixlen, valid_str);
- switch (type) {
- case RTM_NEWADDR:
- if (!address_dropped)
- log_link_debug(link, "added address: %s/%u (valid for %s)",
- buf, address->prefixlen, valid_str);
- else
- log_link_debug(link, "updated address: %s/%u (valid for %s)",
- buf, address->prefixlen, valid_str);
+ LIST_PREPEND(addresses, link->addresses, address);
+ address_establish(address, link);
- LIST_PREPEND(addresses, link->addresses, address);
- address = NULL;
+ address = NULL;
- link_save(link);
+ link_save(link);
+ }
break;
+
case RTM_DELADDR:
- if (address_dropped) {
- log_link_debug(link, "removed address: %s/%u (valid for %s)",
- buf, address->prefixlen, valid_str);
- link_save(link);
+ if (existing) {
+ log_link_debug(link, "Removing address: %s/%u (valid for %s)", buf, address->prefixlen, valid_str);
+ address_release(existing, link);
+ LIST_REMOVE(addresses, link->addresses, existing);
+ address_free(existing);
} else
- log_link_warning(link,
- "removing non-existent address: %s/%u (valid for %s)",
- buf, address->prefixlen, valid_str);
+ log_link_warning(link, "Removing non-existent address: %s/%u (valid for %s)", buf, address->prefixlen, valid_str);
break;
default:
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-07-25 23:38:01 +0000