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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
commit | b750101eb236130cf056c675997decbac904cc49 (patch) | |
tree | a5df1a06754bdd014cb975c051c83b01c9a97532 /src/network/netdev/veth.c | |
parent | Initial commit. (diff) | |
download | systemd-upstream.tar.xz systemd-upstream.zip |
Adding upstream version 252.22.upstream/252.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/network/netdev/veth.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/src/network/netdev/veth.c b/src/network/netdev/veth.c new file mode 100644 index 0000000..fb00e66 --- /dev/null +++ b/src/network/netdev/veth.c @@ -0,0 +1,98 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <errno.h> +#include <net/if.h> +#include <netinet/in.h> +#include <linux/if_arp.h> +#include <linux/veth.h> + +#include "netlink-util.h" +#include "veth.h" + +static int netdev_veth_fill_message_create(NetDev *netdev, Link *link, sd_netlink_message *m) { + struct hw_addr_data hw_addr; + Veth *v; + int r; + + assert(netdev); + assert(!link); + assert(m); + + v = VETH(netdev); + + assert(v); + + r = sd_netlink_message_open_container(m, VETH_INFO_PEER); + if (r < 0) + return r; + + if (v->ifname_peer) { + r = sd_netlink_message_append_string(m, IFLA_IFNAME, v->ifname_peer); + if (r < 0) + return r; + } + + r = netdev_generate_hw_addr(netdev, NULL, v->ifname_peer, &v->hw_addr_peer, &hw_addr); + if (r < 0) + return r; + + if (hw_addr.length > 0) { + log_netdev_debug(netdev, "Using MAC address for peer: %s", HW_ADDR_TO_STR(&hw_addr)); + r = netlink_message_append_hw_addr(m, IFLA_ADDRESS, &hw_addr); + if (r < 0) + return r; + } + + if (netdev->mtu != 0) { + r = sd_netlink_message_append_u32(m, IFLA_MTU, netdev->mtu); + if (r < 0) + return r; + } + + r = sd_netlink_message_close_container(m); + if (r < 0) + return r; + + return 0; +} + +static int netdev_veth_verify(NetDev *netdev, const char *filename) { + Veth *v; + + assert(netdev); + assert(filename); + + v = VETH(netdev); + + assert(v); + + if (!v->ifname_peer) + return log_netdev_warning_errno(netdev, SYNTHETIC_ERRNO(EINVAL), + "Veth NetDev without peer name configured in %s. Ignoring", + filename); + + return 0; +} + +static void veth_done(NetDev *n) { + Veth *v; + + assert(n); + + v = VETH(n); + + assert(v); + + free(v->ifname_peer); +} + +const NetDevVTable veth_vtable = { + .object_size = sizeof(Veth), + .sections = NETDEV_COMMON_SECTIONS "Peer\0", + .done = veth_done, + .fill_message_create = netdev_veth_fill_message_create, + .create_type = NETDEV_CREATE_INDEPENDENT, + .config_verify = netdev_veth_verify, + .iftype = ARPHRD_ETHER, + .generate_mac = true, +}; |