diff options
Diffstat (limited to 'src/network/netdev/vxlan.c')
| -rw-r--r-- | src/network/netdev/vxlan.c | 304 |
1 files changed, 304 insertions, 0 deletions
diff --git a/src/network/netdev/vxlan.c b/src/network/netdev/vxlan.c new file mode 100644 index 0000000000..10c892b044 --- /dev/null +++ b/src/network/netdev/vxlan.c @@ -0,0 +1,304 @@ +/*** + This file is part of systemd. + + Copyright 2014 Susant Sahani + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see <http://www.gnu.org/licenses/>. +***/ + +#include <net/if.h> + +#include "sd-netlink.h" + +#include "conf-parser.h" +#include "alloc-util.h" +#include "extract-word.h" +#include "parse-util.h" +#include "missing.h" + +#include "networkd-link.h" +#include "netdev/vxlan.h" + +static int netdev_vxlan_fill_message_create(NetDev *netdev, Link *link, sd_netlink_message *m) { + VxLan *v; + int r; + + assert(netdev); + assert(link); + assert(m); + + v = VXLAN(netdev); + + assert(v); + + if (v->id <= VXLAN_VID_MAX) { + r = sd_netlink_message_append_u32(m, IFLA_VXLAN_ID, v->id); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_ID attribute: %m"); + } + + r = sd_netlink_message_append_in_addr(m, IFLA_VXLAN_GROUP, &v->group.in); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_GROUP attribute: %m"); + + r = sd_netlink_message_append_u32(m, IFLA_VXLAN_LINK, link->ifindex); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_LINK attribute: %m"); + + if (v->ttl) { + r = sd_netlink_message_append_u8(m, IFLA_VXLAN_TTL, v->ttl); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_TTL attribute: %m"); + } + + if (v->tos) { + r = sd_netlink_message_append_u8(m, IFLA_VXLAN_TOS, v->tos); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_TOS attribute: %m"); + } + + r = sd_netlink_message_append_u8(m, IFLA_VXLAN_LEARNING, v->learning); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_LEARNING attribute: %m"); + + r = sd_netlink_message_append_u8(m, IFLA_VXLAN_RSC, v->route_short_circuit); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_RSC attribute: %m"); + + r = sd_netlink_message_append_u8(m, IFLA_VXLAN_PROXY, v->arp_proxy); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_PROXY attribute: %m"); + + r = sd_netlink_message_append_u8(m, IFLA_VXLAN_L2MISS, v->l2miss); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_L2MISS attribute: %m"); + + r = sd_netlink_message_append_u8(m, IFLA_VXLAN_L3MISS, v->l3miss); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_L3MISS attribute: %m"); + + if (v->fdb_ageing) { + r = sd_netlink_message_append_u32(m, IFLA_VXLAN_AGEING, v->fdb_ageing / USEC_PER_SEC); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_AGEING attribute: %m"); + } + + if (v->max_fdb) { + r = sd_netlink_message_append_u32(m, IFLA_VXLAN_LIMIT, v->max_fdb); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_LIMIT attribute: %m"); + } + + r = sd_netlink_message_append_u8(m, IFLA_VXLAN_UDP_CSUM, v->udpcsum); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_UDP_CSUM attribute: %m"); + + r = sd_netlink_message_append_u8(m, IFLA_VXLAN_UDP_ZERO_CSUM6_TX, v->udp6zerocsumtx); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_UDP_ZERO_CSUM6_TX attribute: %m"); + + r = sd_netlink_message_append_u8(m, IFLA_VXLAN_UDP_ZERO_CSUM6_RX, v->udp6zerocsumrx); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_UDP_ZERO_CSUM6_RX attribute: %m"); + + r = sd_netlink_message_append_u8(m, IFLA_VXLAN_REMCSUM_TX, v->remote_csum_tx); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_REMCSUM_TX attribute: %m"); + + r = sd_netlink_message_append_u8(m, IFLA_VXLAN_REMCSUM_RX, v->remote_csum_rx); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_REMCSUM_RX attribute: %m"); + + r = sd_netlink_message_append_u16(m, IFLA_VXLAN_PORT, htobe16(v->dest_port)); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_PORT attribute: %m"); + + if (v->port_range.low || v->port_range.high) { + struct ifla_vxlan_port_range port_range; + + port_range.low = htobe16(v->port_range.low); + port_range.high = htobe16(v->port_range.high); + + r = sd_netlink_message_append_data(m, IFLA_VXLAN_PORT_RANGE, &port_range, sizeof(port_range)); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_PORT_RANGE attribute: %m"); + } + + if (v->group_policy) { + r = sd_netlink_message_append_flag(m, IFLA_VXLAN_GBP); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_VXLAN_GBP attribute: %m"); + } + + return r; +} + +int config_parse_vxlan_group_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) { + VxLan *v = userdata; + union in_addr_union *addr = data, buffer; + int r, f; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(data); + + r = in_addr_from_string_auto(rvalue, &f, &buffer); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "vxlan multicast group address is invalid, ignoring assignment: %s", rvalue); + return 0; + } + + if (v->family != AF_UNSPEC && v->family != f) { + log_syntax(unit, LOG_ERR, filename, line, 0, "vxlan multicast group incompatible, ignoring assignment: %s", rvalue); + return 0; + } + + v->family = f; + *addr = buffer; + + return 0; +} + +int config_parse_port_range(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) { + _cleanup_free_ char *word = NULL; + VxLan *v = userdata; + unsigned low, high; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(data); + + r = extract_first_word(&rvalue, &word, NULL, 0); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract VXLAN port range, ignoring: %s", rvalue); + return 0; + } + + if (r == 0) + return 0; + + r = parse_range(word, &low, &high); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse VXLAN port range '%s'", word); + return 0; + } + + if (low <= 0 || low > 65535 || high <= 0 || high > 65535) { + log_syntax(unit, LOG_ERR, filename, line, r, + "Failed to parse VXLAN port range '%s'. Port should be greater than 0 and less than 65535.", word); + return 0; + } + + if (high < low) { + log_syntax(unit, LOG_ERR, filename, line, r, + "Failed to parse VXLAN port range '%s'. Port range %u .. %u not valid", word, low, high); + return 0; + } + + v->port_range.low = low; + v->port_range.high = high; + + return 0; +} + +int config_parse_destination_port(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) { + VxLan *v = userdata; + uint16_t port; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(data); + + r = safe_atou16(rvalue, &port); + if (r < 0 || port <= 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse VXLAN destination port '%s'.", rvalue); + return 0; + } + + v->dest_port = port; + + return 0; +} + +static int netdev_vxlan_verify(NetDev *netdev, const char *filename) { + VxLan *v = VXLAN(netdev); + + assert(netdev); + assert(v); + assert(filename); + + if (v->id > VXLAN_VID_MAX) { + log_warning("VXLAN without valid Id configured in %s. Ignoring", filename); + return -EINVAL; + } + + return 0; +} + +static void vxlan_init(NetDev *netdev) { + VxLan *v; + + assert(netdev); + + v = VXLAN(netdev); + + assert(v); + + v->id = VXLAN_VID_MAX + 1; + v->learning = true; + v->udpcsum = false; + v->udp6zerocsumtx = false; + v->udp6zerocsumrx = false; +} + +const NetDevVTable vxlan_vtable = { + .object_size = sizeof(VxLan), + .init = vxlan_init, + .sections = "Match\0NetDev\0VXLAN\0", + .fill_message_create = netdev_vxlan_fill_message_create, + .create_type = NETDEV_CREATE_STACKED, + .config_verify = netdev_vxlan_verify, +}; |