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network: rename Neighbor.MACAddress= to Neighbor.LinkLayerAddress=

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And make it support IPv4 address.

Closes #13015.
This commit is contained in:
Yu Watanabe 2019-07-11 02:23:41 +09:00
parent 49808e0e2d
commit b956364db0
5 changed files with 95 additions and 33 deletions
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4
man/systemd.network.xml
View File

@ -1016,9 +1016,9 @@
</listitem>
</varlistentry>
<varlistentry>
<term><varname>MACAddress=</varname></term>
<term><varname>LinkLayerAddress=</varname></term>
<listitem>
<para>The hardware address of the neighbor.</para>
<para>The link layer address (MAC address or IP address) of the neighbor.</para>
</listitem>
</varlistentry>
</variablelist>

105
src/network/networkd-neighbor.c
View File

@ -59,6 +59,7 @@ static int neighbor_new_static(Network *network, const char *filename, unsigned
*neighbor = (Neighbor) {
.network = network,
.family = AF_UNSPEC,
.lladdr_type = _NEIGHBOR_LLADDR_INVALID,
};
LIST_APPEND(neighbors, network->neighbors, neighbor);
@ -117,8 +118,8 @@ int neighbor_configure(Neighbor *neighbor, Link *link, link_netlink_message_hand
if (neighbor->family == AF_UNSPEC)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Neighbor without Address= configured");
if (!neighbor->mac_configured)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Neighbor without MACAddress= configured");
if (neighbor->lladdr_type < 0)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Neighbor without LinkLayerAddress= configured");
r = sd_rtnl_message_new_neigh(link->manager->rtnl, &req, RTM_NEWNEIGH,
link->ifindex, neighbor->family);
@ -133,7 +134,10 @@ int neighbor_configure(Neighbor *neighbor, Link *link, link_netlink_message_hand
if (r < 0)
return log_error_errno(r, "Could not set flags: %m");
r = sd_netlink_message_append_data(req, NDA_LLADDR, &neighbor->mac, sizeof(neighbor->mac));
if (neighbor->lladdr_type == NEIGHBOR_LLADDR_MAC)
r = sd_netlink_message_append_data(req, NDA_LLADDR, &neighbor->lladdr.mac, sizeof(neighbor->lladdr.mac));
else
r = sd_netlink_message_append_data(req, NDA_LLADDR, &neighbor->lladdr.ip.in, sizeof(neighbor->lladdr.ip.in));
if (r < 0)
return log_error_errno(r, "Could not append NDA_LLADDR attribute: %m");
@ -152,16 +156,17 @@ int neighbor_configure(Neighbor *neighbor, Link *link, link_netlink_message_hand
return 0;
}
int config_parse_neighbor_address(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) {
int config_parse_neighbor_address(
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_(neighbor_free_or_set_invalidp) Neighbor *n = NULL;
@ -188,16 +193,17 @@ int config_parse_neighbor_address(const char *unit,
return 0;
}
int config_parse_neighbor_hwaddr(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) {
int config_parse_neighbor_lladdr(
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_(neighbor_free_or_set_invalidp) Neighbor *n = NULL;
@ -213,13 +219,56 @@ int config_parse_neighbor_hwaddr(const char *unit,
if (r < 0)
return r;
r = ether_addr_from_string(rvalue, &n->mac);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Neighbor MACAddress is invalid, ignoring assignment: %s", rvalue);
return 0;
r = ether_addr_from_string(rvalue, &n->lladdr.mac);
if (r >= 0)
n->lladdr_type = NEIGHBOR_LLADDR_MAC;
else {
r = in_addr_from_string(AF_INET, rvalue, &n->lladdr.ip);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Neighbor LinkLayerAddress= is invalid, ignoring assignment: %s", rvalue);
return 0;
}
n->lladdr_type = NEIGHBOR_LLADDR_IP;
}
n->mac_configured = true;
TAKE_PTR(n);
return 0;
}
int config_parse_neighbor_hwaddr(
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_(neighbor_free_or_set_invalidp) Neighbor *n = NULL;
int r;
assert(filename);
assert(section);
assert(lvalue);
assert(rvalue);
assert(data);
r = neighbor_new_static(network, filename, section_line, &n);
if (r < 0)
return r;
r = ether_addr_from_string(rvalue, &n->lladdr.mac);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Neighbor MACAddress= is invalid, ignoring assignment: %s", rvalue);
return 0;
}
n->lladdr_type = NEIGHBOR_LLADDR_MAC;
TAKE_PTR(n);
return 0;

15
src/network/networkd-neighbor.h
View File

@ -15,6 +15,13 @@ typedef struct Neighbor Neighbor;
#include "networkd-network.h"
#include "networkd-util.h"
typedef enum {
NEIGHBOR_LLADDR_MAC,
NEIGHBOR_LLADDR_IP,
_NEIGHBOR_LLADDR_MAX,
_NEIGHBOR_LLADDR_INVALID = -1,
} NeighborLLAddressType;
struct Neighbor {
Network *network;
Link *link;
@ -22,8 +29,11 @@ struct Neighbor {
int family;
union in_addr_union in_addr;
bool mac_configured;
struct ether_addr mac;
union {
struct ether_addr mac;
union in_addr_union ip;
} lladdr;
NeighborLLAddressType lladdr_type;
LIST_FIELDS(Neighbor, neighbors);
};
@ -36,3 +46,4 @@ int neighbor_configure(Neighbor *neighbor, Link *link, link_netlink_message_hand
CONFIG_PARSER_PROTOTYPE(config_parse_neighbor_address);
CONFIG_PARSER_PROTOTYPE(config_parse_neighbor_hwaddr);
CONFIG_PARSER_PROTOTYPE(config_parse_neighbor_lladdr);

3
src/network/networkd-network-gperf.gperf
View File

@ -108,7 +108,8 @@ Address.Scope, config_parse_address_scope,
IPv6AddressLabel.Prefix, config_parse_address_label_prefix, 0, 0
IPv6AddressLabel.Label, config_parse_address_label, 0, 0
Neighbor.Address, config_parse_neighbor_address, 0, 0
Neighbor.MACAddress, config_parse_neighbor_hwaddr, 0, 0
Neighbor.LinkLayerAddress, config_parse_neighbor_lladdr, 0, 0
Neighbor.MACAddress, config_parse_neighbor_hwaddr, 0, 0 /* deprecated */
RoutingPolicyRule.TypeOfService, config_parse_routing_policy_rule_tos, 0, 0
RoutingPolicyRule.Priority, config_parse_routing_policy_rule_priority, 0, 0
RoutingPolicyRule.Table, config_parse_routing_policy_rule_table, 0, 0

1
test/fuzz/fuzz-network-parser/directives.network
View File

@ -223,6 +223,7 @@ Managed=
OtherInformation=
[Neighbor]
Address=
LinkLayerAddress=
MACAddress=
[IPv6AddressLabel]
Label=