#include <net/if.h>
#include "networkd.h"
+#include "networkd-link.h"
#include "utf8.h"
#include "util.h"
#include "conf-parser.h"
-#include "net-util.h"
+#include "network-internal.h"
-int address_new(Network *network, unsigned section, Address **ret) {
+static void address_init(Address *address) {
+ assert(address);
+
+ address->family = AF_UNSPEC;
+ address->scope = RT_SCOPE_UNIVERSE;
+ address->cinfo.ifa_prefered = CACHE_INFO_INFINITY_LIFE_TIME;
+ address->cinfo.ifa_valid = CACHE_INFO_INFINITY_LIFE_TIME;
+}
+
+int address_new_static(Network *network, unsigned section, Address **ret) {
_cleanup_address_free_ Address *address = NULL;
if (section) {
- uint64_t key = section;
- address = hashmap_get(network->addresses_by_section, &key);
+ address = hashmap_get(network->addresses_by_section, UINT_TO_PTR(section));
if (address) {
*ret = address;
address = NULL;
if (!address)
return -ENOMEM;
+ address_init(address);
+
address->network = network;
- LIST_PREPEND(addresses, network->addresses, address);
+ LIST_PREPEND(addresses, network->static_addresses, address);
if (section) {
address->section = section;
- hashmap_put(network->addresses_by_section, &address->section, address);
+ hashmap_put(network->addresses_by_section,
+ UINT_TO_PTR(address->section), address);
}
*ret = address;
return 0;
}
+int address_new_dynamic(Address **ret) {
+ _cleanup_address_free_ Address *address = NULL;
+
+ address = new0(Address, 1);
+ if (!address)
+ return -ENOMEM;
+
+ address_init(address);
+
+ *ret = address;
+ address = NULL;
+
+ return 0;
+}
+
void address_free(Address *address) {
if (!address)
return;
- LIST_REMOVE(addresses, address->network->addresses, address);
+ if (address->network) {
+ LIST_REMOVE(addresses, address->network->static_addresses, address);
- if (address->section)
- hashmap_remove(address->network->addresses_by_section,
- &address->section);
+ if (address->section)
+ hashmap_remove(address->network->addresses_by_section,
+ UINT_TO_PTR(address->section));
+ }
free(address);
}
-int address_configure(Address *address, Link *link,
- sd_rtnl_message_handler_t callback) {
- _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *req = NULL;
+int address_drop(Address *address, Link *link,
+ sd_rtnl_message_handler_t callback) {
+ _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
int r;
assert(address);
assert(link->manager);
assert(link->manager->rtnl);
- r = sd_rtnl_message_addr_new(RTM_NEWADDR, link->ifindex,
- address->family, address->prefixlen,
- IFA_F_PERMANENT, RT_SCOPE_UNIVERSE, &req);
- if (r < 0) {
- log_error("Could not allocate RTM_NEWADDR message: %s",
- strerror(-r));
- return r;
- }
+ r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_DELADDR,
+ link->ifindex, address->family);
+ if (r < 0)
+ return log_error_errno(r, "Could not allocate RTM_DELADDR message: %m");
+
+ r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen);
+ if (r < 0)
+ return log_error_errno(r, "Could not set prefixlen: %m");
+
+ if (address->family == AF_INET)
+ r = sd_rtnl_message_append_in_addr(req, IFA_LOCAL, &address->in_addr.in);
+ else if (address->family == AF_INET6)
+ r = sd_rtnl_message_append_in6_addr(req, IFA_LOCAL, &address->in_addr.in6);
+ if (r < 0)
+ return log_error_errno(r, "Could not append IFA_LOCAL attribute: %m");
+
+ r = sd_rtnl_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
+ if (r < 0)
+ return log_error_errno(r, "Could not send rtnetlink message: %m");
+
+ link_ref(link);
+
+ return 0;
+}
+
+int address_update(Address *address, Link *link,
+ sd_rtnl_message_handler_t callback) {
+ _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
+ int r;
+
+ assert(address);
+ assert(address->family == AF_INET || address->family == AF_INET6);
+ assert(link->ifindex > 0);
+ assert(link->manager);
+ assert(link->manager->rtnl);
+
+ r = sd_rtnl_message_new_addr_update(link->manager->rtnl, &req,
+ link->ifindex, address->family);
+ if (r < 0)
+ return log_error_errno(r, "Could not allocate RTM_NEWADDR message: %m");
+
+ r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen);
+ if (r < 0)
+ return log_error_errno(r, "Could not set prefixlen: %m");
+
+ r = sd_rtnl_message_addr_set_flags(req, IFA_F_PERMANENT);
+ if (r < 0)
+ return log_error_errno(r, "Could not set flags: %m");
+
+ r = sd_rtnl_message_addr_set_scope(req, address->scope);
+ if (r < 0)
+ return log_error_errno(r, "Could not set scope: %m");
if (address->family == AF_INET)
r = sd_rtnl_message_append_in_addr(req, IFA_LOCAL, &address->in_addr.in);
else if (address->family == AF_INET6)
r = sd_rtnl_message_append_in6_addr(req, IFA_LOCAL, &address->in_addr.in6);
+ if (r < 0)
+ return log_error_errno(r, "Could not append IFA_LOCAL attribute: %m");
+
+ if (address->family == AF_INET) {
+ r = sd_rtnl_message_append_in_addr(req, IFA_BROADCAST, &address->broadcast);
+ if (r < 0)
+ return log_error_errno(r, "Could not append IFA_BROADCAST attribute: %m");
+ }
+
+ if (address->label) {
+ r = sd_rtnl_message_append_string(req, IFA_LABEL, address->label);
+ if (r < 0)
+ return log_error_errno(r, "Could not append IFA_LABEL attribute: %m");
+ }
+
+ r = sd_rtnl_message_append_cache_info(req, IFA_CACHEINFO, &address->cinfo);
+ if (r < 0)
+ return log_error_errno(r, "Could not append IFA_CACHEINFO attribute: %m");
+
+ r = sd_rtnl_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
+ if (r < 0)
+ return log_error_errno(r, "Could not send rtnetlink message: %m");
+
+ link_ref(link);
+
+ return 0;
+}
+
+static int address_acquire(Link *link, Address *original, Address **ret) {
+ union in_addr_union in_addr = {};
+ struct in_addr broadcast = {};
+ _cleanup_address_free_ Address *na = NULL;
+ int r;
+
+ assert(link);
+ assert(original);
+ assert(ret);
+
+ /* Something useful was configured? just use it */
+ if (in_addr_is_null(original->family, &original->in_addr) <= 0)
+ return 0;
+
+ /* The address is configured to be 0.0.0.0 or [::] by the user?
+ * Then let's acquire something more useful from the pool. */
+ r = manager_address_pool_acquire(link->manager, original->family, original->prefixlen, &in_addr);
if (r < 0) {
- log_error("Could not append IFA_LOCAL attribute: %s",
- strerror(-r));
+ log_link_error(link, "Failed to acquire address from pool: %s", strerror(-r));
return r;
}
+ if (r == 0) {
+ log_link_error(link, "Couldn't find free address for interface, all taken.");
+ return -EBUSY;
+ }
- if (address->family == AF_INET) {
- struct in_addr broadcast;
+ if (original->family == AF_INET) {
+ /* Pick first address in range for ourselves ... */
+ in_addr.in.s_addr = in_addr.in.s_addr | htobe32(1);
- broadcast.s_addr = address->in_addr.in.s_addr | address->netmask.s_addr;
+ /* .. and use last as broadcast address */
+ broadcast.s_addr = in_addr.in.s_addr | htobe32(0xFFFFFFFFUL >> original->prefixlen);
+ } else if (original->family == AF_INET6)
+ in_addr.in6.s6_addr[15] |= 1;
- r = sd_rtnl_message_append_in_addr(req, IFA_BROADCAST, &broadcast);
- if (r < 0) {
- log_error("Could not append IFA_BROADCAST attribute: %s",
- strerror(-r));
- return r;
+ r = address_new_dynamic(&na);
+ if (r < 0)
+ return r;
+
+ na->family = original->family;
+ na->prefixlen = original->prefixlen;
+ na->scope = original->scope;
+ na->cinfo = original->cinfo;
+
+ if (original->label) {
+ na->label = strdup(original->label);
+ if (!na->label)
+ return -ENOMEM;
+ }
+
+ na->broadcast = broadcast;
+ na->in_addr = in_addr;
+
+ LIST_PREPEND(addresses, link->pool_addresses, na);
+
+ *ret = na;
+ na = NULL;
+
+ return 0;
+}
+
+int address_configure(Address *address, Link *link,
+ sd_rtnl_message_handler_t callback) {
+ _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
+ int r;
+
+ assert(address);
+ assert(address->family == AF_INET || address->family == AF_INET6);
+ assert(link);
+ assert(link->ifindex > 0);
+ assert(link->manager);
+ assert(link->manager->rtnl);
+
+ r = address_acquire(link, address, &address);
+ if (r < 0)
+ return r;
+
+ r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_NEWADDR,
+ link->ifindex, address->family);
+ if (r < 0)
+ return log_error_errno(r, "Could not allocate RTM_NEWADDR message: %m");
+
+ r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen);
+ if (r < 0)
+ return log_error_errno(r, "Could not set prefixlen: %m");
+
+ r = sd_rtnl_message_addr_set_flags(req, IFA_F_PERMANENT);
+ if (r < 0)
+ return log_error_errno(r, "Could not set flags: %m");
+
+ r = sd_rtnl_message_addr_set_scope(req, address->scope);
+ if (r < 0)
+ return log_error_errno(r, "Could not set scope: %m");
+
+ if (address->family == AF_INET)
+ r = sd_rtnl_message_append_in_addr(req, IFA_LOCAL, &address->in_addr.in);
+ else if (address->family == AF_INET6)
+ r = sd_rtnl_message_append_in6_addr(req, IFA_LOCAL, &address->in_addr.in6);
+ if (r < 0)
+ return log_error_errno(r, "Could not append IFA_LOCAL attribute: %m");
+
+ if (!in_addr_is_null(address->family, &address->in_addr_peer)) {
+ if (address->family == AF_INET)
+ r = sd_rtnl_message_append_in_addr(req, IFA_ADDRESS, &address->in_addr_peer.in);
+ else if (address->family == AF_INET6)
+ r = sd_rtnl_message_append_in6_addr(req, IFA_ADDRESS, &address->in_addr_peer.in6);
+ if (r < 0)
+ return log_error_errno(r, "Could not append IFA_ADDRESS attribute: %m");
+ } else {
+ if (address->family == AF_INET) {
+ r = sd_rtnl_message_append_in_addr(req, IFA_BROADCAST, &address->broadcast);
+ if (r < 0)
+ return log_error_errno(r, "Could not append IFA_BROADCAST attribute: %m");
}
}
if (address->label) {
r = sd_rtnl_message_append_string(req, IFA_LABEL, address->label);
- if (r < 0) {
- log_error("Could not append IFA_LABEL attribute: %s",
- strerror(-r));
- return r;
- }
+ if (r < 0)
+ return log_error_errno(r, "Could not append IFA_LABEL attribute: %m");
}
+ r = sd_rtnl_message_append_cache_info(req, IFA_CACHEINFO,
+ &address->cinfo);
+ if (r < 0)
+ return log_error_errno(r, "Could not append IFA_CACHEINFO attribute: %m");
+
r = sd_rtnl_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
- if (r < 0) {
- log_error("Could not send rtnetlink message: %s", strerror(-r));
+ if (r < 0)
+ return log_error_errno(r, "Could not send rtnetlink message: %m");
+
+ link_ref(link);
+
+ return 0;
+}
+
+int config_parse_broadcast(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ Network *network = userdata;
+ _cleanup_address_free_ Address *n = NULL;
+ int r;
+
+ assert(filename);
+ assert(section);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = address_new_static(network, section_line, &n);
+ if (r < 0)
return r;
+
+ if (n->family == AF_INET6) {
+ log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+ "Broadcast is not valid for IPv6 addresses, ignoring assignment: %s", rvalue);
+ return 0;
}
+ r = in_addr_from_string(AF_INET, rvalue, (union in_addr_union*) &n->broadcast);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+ "Broadcast is invalid, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+
+ n->family = AF_INET;
+ n = NULL;
+
return 0;
}
const char *rvalue,
void *data,
void *userdata) {
+
Network *network = userdata;
_cleanup_address_free_ Address *n = NULL;
- _cleanup_free_ char *address = NULL;
- const char *e;
- int r;
+ const char *address, *e;
+ union in_addr_union buffer;
+ int r, f;
assert(filename);
assert(section);
section_line = 0;
}
- r = address_new(network, section_line, &n);
+ r = address_new_static(network, section_line, &n);
if (r < 0)
return r;
r = safe_atou(e + 1, &i);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
- "Interface prefix length is invalid, "
- "ignoring assignment: %s", e + 1);
+ "Prefix length is invalid, ignoring assignment: %s", e + 1);
return 0;
}
n->prefixlen = (unsigned char) i;
- n->netmask.s_addr = htonl(0xfffffffflu >> n->prefixlen);
- address = strndup(rvalue, e - rvalue);
- if (!address)
- return log_oom();
- } else {
- address = strdup(rvalue);
- if (!address)
- return log_oom();
- }
+ address = strndupa(rvalue, e - rvalue);
+ } else
+ address = rvalue;
- r = net_parse_inaddr(address, &n->family, &n->in_addr);
+ r = in_addr_from_string_auto(address, &f, &buffer);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Address is invalid, ignoring assignment: %s", address);
return 0;
}
+ if (!e && f == AF_INET) {
+ r = in_addr_default_prefixlen(&buffer.in, &n->prefixlen);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+ "Prefix length not specified, and a default one can not be deduced for '%s', ignoring assignment", address);
+ return 0;
+ }
+ }
+
+ if (n->family != AF_UNSPEC && f != n->family) {
+ log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+ "Address is incompatible, ignoring assignment: %s", address);
+ return 0;
+ }
+
+ n->family = f;
+
+ if (streq(lvalue, "Address"))
+ n->in_addr = buffer;
+ else
+ n->in_addr_peer = buffer;
+
+ if (n->family == AF_INET && n->broadcast.s_addr == 0)
+ n->broadcast.s_addr = n->in_addr.in.s_addr | htonl(0xfffffffflu >> n->prefixlen);
+
n = NULL;
return 0;
assert(rvalue);
assert(data);
- r = address_new(network, section_line, &n);
+ r = address_new_static(network, section_line, &n);
if (r < 0)
return r;
return 0;
}
+
+bool address_equal(Address *a1, Address *a2) {
+ /* same object */
+ if (a1 == a2)
+ return true;
+
+ /* one, but not both, is NULL */
+ if (!a1 || !a2)
+ return false;
+
+ if (a1->family != a2->family)
+ return false;
+
+ switch (a1->family) {
+ /* use the same notion of equality as the kernel does */
+ case AF_UNSPEC:
+ return true;
+
+ case AF_INET:
+ if (a1->prefixlen != a2->prefixlen)
+ return false;
+ else {
+ uint32_t b1, b2;
+
+ b1 = be32toh(a1->in_addr.in.s_addr);
+ b2 = be32toh(a2->in_addr.in.s_addr);
+
+ return (b1 >> (32 - a1->prefixlen)) == (b2 >> (32 - a1->prefixlen));
+ }
+
+ case AF_INET6:
+ {
+ uint64_t *b1, *b2;
+
+ b1 = (uint64_t*)&a1->in_addr.in6;
+ b2 = (uint64_t*)&a2->in_addr.in6;
+
+ return (((b1[0] ^ b2[0]) | (b1[1] ^ b2[1])) == 0UL);
+ }
+ default:
+ assert_not_reached("Invalid address family");
+ }
+}
~ianmdlvl / elogind.git / blobdiff