1 /* SPDX-License-Identifier: LGPL-2.1+ */
3 This file is part of systemd.
5 Copyright 2017 Susant Sahani
10 #include "alloc-util.h"
11 #include "conf-parser.h"
12 #include "extract-word.h"
14 #include "parse-util.h"
15 #include "sd-netlink.h"
16 #include "string-util.h"
19 #include "networkd-manager.h"
21 #define GENEVE_FLOW_LABEL_MAX_MASK 0xFFFFFU
22 #define DEFAULT_GENEVE_DESTINATION_PORT 6081
24 /* callback for geneve netdev's created without a backing Link */
25 static int geneve_netdev_create_handler(sd_netlink
*rtnl
, sd_netlink_message
*m
, void *userdata
) {
26 _cleanup_(netdev_unrefp
) NetDev
*netdev
= userdata
;
29 assert(netdev
->state
!= _NETDEV_STATE_INVALID
);
31 r
= sd_netlink_message_get_errno(m
);
33 log_netdev_info(netdev
, "Geneve netdev exists, using existing without changing its parameters");
35 log_netdev_warning_errno(netdev
, r
, "Geneve netdev could not be created: %m");
41 log_netdev_debug(netdev
, "Geneve created");
46 static int netdev_geneve_create(NetDev
*netdev
) {
47 _cleanup_(sd_netlink_message_unrefp
) sd_netlink_message
*m
= NULL
;
55 r
= sd_rtnl_message_new_link(netdev
->manager
->rtnl
, &m
, RTM_NEWLINK
, 0);
57 return log_netdev_error_errno(netdev
, r
, "Could not allocate RTM_NEWLINK message: %m");
59 r
= sd_netlink_message_append_string(m
, IFLA_IFNAME
, netdev
->ifname
);
61 return log_netdev_error_errno(netdev
, r
, "Could not append IFLA_IFNAME, attribute: %m");
64 r
= sd_netlink_message_append_ether_addr(m
, IFLA_ADDRESS
, netdev
->mac
);
66 return log_netdev_error_errno(netdev
, r
, "Could not append IFLA_ADDRESS attribute: %m");
70 r
= sd_netlink_message_append_u32(m
, IFLA_MTU
, netdev
->mtu
);
72 return log_netdev_error_errno(netdev
, r
, "Could not append IFLA_MTU attribute: %m");
75 r
= sd_netlink_message_open_container(m
, IFLA_LINKINFO
);
77 return log_netdev_error_errno(netdev
, r
, "Could not append IFLA_LINKINFO attribute: %m");
79 r
= sd_netlink_message_open_container_union(m
, IFLA_INFO_DATA
, netdev_kind_to_string(netdev
->kind
));
81 return log_netdev_error_errno(netdev
, r
, "Could not append IFLA_INFO_DATA attribute: %m");
83 if (v
->id
<= GENEVE_VID_MAX
) {
84 r
= sd_netlink_message_append_u32(m
, IFLA_GENEVE_ID
, v
->id
);
86 return log_netdev_error_errno(netdev
, r
, "Could not append IFLA_GENEVE_ID attribute: %m");
89 if (!in_addr_is_null(v
->remote_family
, &v
->remote
)) {
91 if (v
->remote_family
== AF_INET
)
92 r
= sd_netlink_message_append_in_addr(m
, IFLA_GENEVE_REMOTE
, &v
->remote
.in
);
94 r
= sd_netlink_message_append_in6_addr(m
, IFLA_GENEVE_REMOTE6
, &v
->remote
.in6
);
97 return log_netdev_error_errno(netdev
, r
, "Could not append IFLA_GENEVE_GROUP attribute: %m");
102 r
= sd_netlink_message_append_u8(m
, IFLA_GENEVE_TTL
, v
->ttl
);
104 return log_netdev_error_errno(netdev
, r
, "Could not append IFLA_GENEVE_TTL attribute: %m");
107 r
= sd_netlink_message_append_u8(m
, IFLA_GENEVE_TOS
, v
->tos
);
109 return log_netdev_error_errno(netdev
, r
, "Could not append IFLA_GENEVE_TOS attribute: %m");
111 r
= sd_netlink_message_append_u8(m
, IFLA_GENEVE_UDP_CSUM
, v
->udpcsum
);
113 return log_netdev_error_errno(netdev
, r
, "Could not append IFLA_GENEVE_UDP_CSUM attribute: %m");
115 r
= sd_netlink_message_append_u8(m
, IFLA_GENEVE_UDP_ZERO_CSUM6_TX
, v
->udp6zerocsumtx
);
117 return log_netdev_error_errno(netdev
, r
, "Could not append IFLA_GENEVE_UDP_ZERO_CSUM6_TX attribute: %m");
119 r
= sd_netlink_message_append_u8(m
, IFLA_GENEVE_UDP_ZERO_CSUM6_RX
, v
->udp6zerocsumrx
);
121 return log_netdev_error_errno(netdev
, r
, "Could not append IFLA_GENEVE_UDP_ZERO_CSUM6_RX attribute: %m");
123 if (v
->dest_port
!= DEFAULT_GENEVE_DESTINATION_PORT
) {
124 r
= sd_netlink_message_append_u16(m
, IFLA_GENEVE_PORT
, htobe16(v
->dest_port
));
126 return log_netdev_error_errno(netdev
, r
, "Could not append IFLA_GENEVE_PORT attribute: %m");
129 if (v
->flow_label
> 0) {
130 r
= sd_netlink_message_append_u32(m
, IFLA_GENEVE_LABEL
, htobe32(v
->flow_label
));
132 return log_netdev_error_errno(netdev
, r
, "Could not append IFLA_GENEVE_LABEL attribute: %m");
135 r
= sd_netlink_message_close_container(m
);
137 return log_netdev_error_errno(netdev
, r
, "Could not append IFLA_INFO_DATA attribute: %m");
139 r
= sd_netlink_message_close_container(m
);
141 return log_netdev_error_errno(netdev
, r
, "Could not append IFLA_LINKINFO attribute: %m");
143 r
= sd_netlink_call_async(netdev
->manager
->rtnl
, m
, geneve_netdev_create_handler
, netdev
, 0, NULL
);
145 return log_netdev_error_errno(netdev
, r
, "Could not send rtnetlink message: %m");
149 netdev
->state
= NETDEV_STATE_CREATING
;
151 log_netdev_debug(netdev
, "Creating");
156 int config_parse_geneve_vni(const char *unit
,
157 const char *filename
,
160 unsigned section_line
,
166 Geneve
*v
= userdata
;
175 r
= safe_atou32(rvalue
, &f
);
177 log_syntax(unit
, LOG_ERR
, filename
, line
, r
, "Failed to parse Geneve VNI '%s'.", rvalue
);
181 if (f
> GENEVE_VID_MAX
){
182 log_syntax(unit
, LOG_ERR
, filename
, line
, r
, "Geneve VNI out is of range '%s'.", rvalue
);
191 int config_parse_geneve_address(const char *unit
,
192 const char *filename
,
195 unsigned section_line
,
201 Geneve
*v
= userdata
;
202 union in_addr_union
*addr
= data
, buffer
;
210 r
= in_addr_from_string_auto(rvalue
, &f
, &buffer
);
212 log_syntax(unit
, LOG_ERR
, filename
, line
, r
, "geneve '%s' address is invalid, ignoring assignment: %s", lvalue
, rvalue
);
216 r
= in_addr_is_multicast(f
, &buffer
);
218 log_syntax(unit
, LOG_ERR
, filename
, line
, 0, "geneve invalid multicast '%s' address, ignoring assignment: %s", lvalue
, rvalue
);
222 v
->remote_family
= f
;
228 int config_parse_geneve_flow_label(const char *unit
,
229 const char *filename
,
232 unsigned section_line
,
238 Geneve
*v
= userdata
;
247 r
= safe_atou32(rvalue
, &f
);
249 log_syntax(unit
, LOG_ERR
, filename
, line
, r
, "Failed to parse Geneve flow label '%s'.", rvalue
);
253 if (f
& ~GENEVE_FLOW_LABEL_MAX_MASK
) {
254 log_syntax(unit
, LOG_ERR
, filename
, line
, r
,
255 "Geneve flow label '%s' not valid. Flow label range should be [0-1048575].", rvalue
);
264 static int netdev_geneve_verify(NetDev
*netdev
, const char *filename
) {
265 Geneve
*v
= GENEVE(netdev
);
272 log_warning("Invalid Geneve TTL value '0' configured in '%s'. Ignoring", filename
);
279 static void geneve_init(NetDev
*netdev
) {
288 v
->id
= GENEVE_VID_MAX
+ 1;
289 v
->dest_port
= DEFAULT_GENEVE_DESTINATION_PORT
;
291 v
->udp6zerocsumtx
= false;
292 v
->udp6zerocsumrx
= false;
295 const NetDevVTable geneve_vtable
= {
296 .object_size
= sizeof(Geneve
),
298 .sections
= "Match\0NetDev\0GENEVE\0",
299 .create
= netdev_geneve_create
,
300 .create_type
= NETDEV_CREATE_INDEPENDENT
,
301 .config_verify
= netdev_geneve_verify
,