diff options
Diffstat (limited to 'src/network/netdev/macvlan.c')
| -rw-r--r-- | src/network/netdev/macvlan.c | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/src/network/netdev/macvlan.c b/src/network/netdev/macvlan.c new file mode 100644 index 0000000..1114bb0 --- /dev/null +++ b/src/network/netdev/macvlan.c @@ -0,0 +1,170 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <net/if.h> +#include <netinet/in.h> +#include <linux/if_arp.h> + +#include "conf-parser.h" +#include "macvlan.h" +#include "macvlan-util.h" +#include "networkd-network.h" +#include "parse-util.h" + +DEFINE_CONFIG_PARSE_ENUM(config_parse_macvlan_mode, macvlan_mode, MacVlanMode, "Failed to parse macvlan mode"); + +static int netdev_macvlan_fill_message_create(NetDev *netdev, Link *link, sd_netlink_message *req) { + MacVlan *m; + int r; + + assert(netdev); + assert(link); + assert(netdev->ifname); + assert(link->network); + + if (netdev->kind == NETDEV_KIND_MACVLAN) + m = MACVLAN(netdev); + else + m = MACVTAP(netdev); + + assert(m); + + if (m->mode == NETDEV_MACVLAN_MODE_SOURCE && !set_isempty(m->match_source_mac)) { + const struct ether_addr *mac_addr; + + r = sd_netlink_message_append_u32(req, IFLA_MACVLAN_MACADDR_MODE, MACVLAN_MACADDR_SET); + if (r < 0) + return r; + + r = sd_netlink_message_open_container(req, IFLA_MACVLAN_MACADDR_DATA); + if (r < 0) + return r; + + SET_FOREACH(mac_addr, m->match_source_mac) { + r = sd_netlink_message_append_ether_addr(req, IFLA_MACVLAN_MACADDR, mac_addr); + if (r < 0) + return r; + } + + r = sd_netlink_message_close_container(req); + if (r < 0) + return r; + } + + if (m->mode != _NETDEV_MACVLAN_MODE_INVALID) { + r = sd_netlink_message_append_u32(req, IFLA_MACVLAN_MODE, m->mode); + if (r < 0) + return r; + } + + /* set the nopromisc flag if Promiscuous= of the link is explicitly set to false */ + if (m->mode == NETDEV_MACVLAN_MODE_PASSTHRU && link->network->promiscuous == 0) { + r = sd_netlink_message_append_u16(req, IFLA_MACVLAN_FLAGS, MACVLAN_FLAG_NOPROMISC); + if (r < 0) + return r; + } + + if (m->bc_queue_length != UINT32_MAX) { + r = sd_netlink_message_append_u32(req, IFLA_MACVLAN_BC_QUEUE_LEN, m->bc_queue_length); + if (r < 0) + return r; + } + + return 0; +} + +int config_parse_macvlan_broadcast_queue_size( + 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) { + + MacVlan *m = ASSERT_PTR(userdata); + uint32_t v; + int r; + + assert(filename); + assert(section); + assert(lvalue); + assert(rvalue); + assert(data); + + if (isempty(rvalue)) { + m->bc_queue_length = UINT32_MAX; + return 0; + } + + r = safe_atou32(rvalue, &v); + if (r < 0) { + log_syntax(unit, LOG_WARNING, filename, line, r, + "Failed to parse BroadcastMulticastQueueLength=%s, ignoring assignment: %m", rvalue); + return 0; + } + + if (v == UINT32_MAX) { + log_syntax(unit, LOG_WARNING, filename, line, 0, + "Invalid BroadcastMulticastQueueLength=%s, ignoring assignment: %m", rvalue); + return 0; + } + + m->bc_queue_length = v; + return 0; +} + +static void macvlan_done(NetDev *n) { + MacVlan *m; + + assert(n); + + if (n->kind == NETDEV_KIND_MACVLAN) + m = MACVLAN(n); + else + m = MACVTAP(n); + + assert(m); + + set_free(m->match_source_mac); +} + +static void macvlan_init(NetDev *n) { + MacVlan *m; + + assert(n); + + if (n->kind == NETDEV_KIND_MACVLAN) + m = MACVLAN(n); + else + m = MACVTAP(n); + + assert(m); + + m->mode = _NETDEV_MACVLAN_MODE_INVALID; + m->bc_queue_length = UINT32_MAX; +} + +const NetDevVTable macvtap_vtable = { + .object_size = sizeof(MacVlan), + .init = macvlan_init, + .done = macvlan_done, + .sections = NETDEV_COMMON_SECTIONS "MACVTAP\0", + .fill_message_create = netdev_macvlan_fill_message_create, + .create_type = NETDEV_CREATE_STACKED, + .iftype = ARPHRD_ETHER, + .generate_mac = true, +}; + +const NetDevVTable macvlan_vtable = { + .object_size = sizeof(MacVlan), + .init = macvlan_init, + .done = macvlan_done, + .sections = NETDEV_COMMON_SECTIONS "MACVLAN\0", + .fill_message_create = netdev_macvlan_fill_message_create, + .create_type = NETDEV_CREATE_STACKED, + .iftype = ARPHRD_ETHER, + .generate_mac = true, +}; |