From 413708d106afb5ec36464c3fad56f081373320e0 Mon Sep 17 00:00:00 2001 From: Vinay Kulkarni Date: Wed, 30 Mar 2016 16:33:55 -0700 Subject: DHCP DUID, IAID configuration options --- src/libsystemd-network/sd-dhcp-client.c | 48 ++++++++++++++++++++++++++++++++- 1 file changed, 47 insertions(+), 1 deletion(-) (limited to 'src/libsystemd-network/sd-dhcp-client.c') diff --git a/src/libsystemd-network/sd-dhcp-client.c b/src/libsystemd-network/sd-dhcp-client.c index 1188b31500..287b6e26fa 100644 --- a/src/libsystemd-network/sd-dhcp-client.c +++ b/src/libsystemd-network/sd-dhcp-client.c @@ -82,7 +82,7 @@ struct sd_dhcp_client { } _packed_ ll; struct { /* 255: Node-specific (RFC 4361) */ - uint32_t iaid; + be32_t iaid; struct duid duid; } _packed_ ns; struct { @@ -298,6 +298,52 @@ int sd_dhcp_client_set_client_id(sd_dhcp_client *client, uint8_t type, return 0; } +int sd_dhcp_client_set_iaid_duid(sd_dhcp_client *client, uint32_t iaid, + uint16_t duid_type, uint8_t *duid, size_t duid_len) { + DHCP_CLIENT_DONT_DESTROY(client); + int r; + assert_return(client, -EINVAL); + zero(client->client_id); + + client->client_id.type = 255; + + /* If IAID is not configured, generate it. */ + if (iaid == 0) { + r = dhcp_identifier_set_iaid(client->index, client->mac_addr, + client->mac_addr_len, + &client->client_id.ns.iaid); + if (r < 0) + return r; + } else + client->client_id.ns.iaid = htobe32(iaid); + + /* If DUID is not configured, generate DUID-EN. */ + if (duid_len == 0) { + r = dhcp_identifier_set_duid_en(&client->client_id.ns.duid, + &duid_len); + if (r < 0) + return r; + } else { + r = dhcp_validate_duid_len(client->client_id.type, duid_len); + if (r < 0) + return r; + client->client_id.ns.duid.type = htobe16(duid_type); + memcpy(&client->client_id.ns.duid.raw.data, duid, duid_len); + duid_len += sizeof(client->client_id.ns.duid.type); + } + + client->client_id_len = sizeof(client->client_id.type) + duid_len + + sizeof(client->client_id.ns.iaid); + + if (!IN_SET(client->state, DHCP_STATE_INIT, DHCP_STATE_STOPPED)) { + log_dhcp_client(client, "Configured IAID+DUID, restarting."); + client_stop(client, SD_DHCP_CLIENT_EVENT_STOP); + sd_dhcp_client_start(client); + } + + return 0; +} + int sd_dhcp_client_set_hostname(sd_dhcp_client *client, const char *hostname) { char *new_hostname = NULL; -- cgit v1.2.3-54-g00ecf