From: Susant Sahani Date: Tue, 25 Apr 2017 04:15:05 +0000 (+0530) Subject: networkd: Introduce GENEVE netdev X-Git-Tag: v234~288^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6598e04641a17cc56216f907be5a62535b433806;p=platform%2Fupstream%2Fsystemd.git networkd: Introduce GENEVE netdev This work enables cration of geneve tunnel --- diff --git a/Makefile.am b/Makefile.am index 46a842c..b8db4f1 100644 --- a/Makefile.am +++ b/Makefile.am @@ -5776,6 +5776,8 @@ libnetworkd_core_la_SOURCES = \ src/network/netdev/veth.c \ src/network/netdev/vxlan.h \ src/network/netdev/vxlan.c \ + src/network/netdev/geneve.h \ + src/network/netdev/geneve.c \ src/network/netdev/vlan.h \ src/network/netdev/vlan.c \ src/network/netdev/macvlan.h \ diff --git a/man/systemd.netdev.xml b/man/systemd.netdev.xml index 4ec672f..cb2bd23 100644 --- a/man/systemd.netdev.xml +++ b/man/systemd.netdev.xml @@ -169,6 +169,9 @@ vxlan A virtual extensible LAN (vxlan), for connecting Cloud computing deployments. + geneve + A GEneric NEtwork Virtualization Encapsulation (GENEVE) netdev driver. + vrf A Virtual Routing and Forwarding (VRF) interface to create separate routing and forwarding domains. @@ -622,6 +625,69 @@ + [GENEVE] Section Options + The [GENEVE] section only applies for + netdevs of kind geneve, and accepts the + following keys: + + + + Id= + + Specifies the Virtual Network Identifer (VNI) to use. Ranges [0-16777215]. + + + + Remote= + + Specifies the unicast destination IP address to use in outgoing packets. + + + + TOS= + + Specifies the TOS value to use in outgoing packets. Ranges [1-255]. + + + + TTL= + + Specifies the TTL value to use in outgoing packets. Ranges [1-255]. + + + + UDPChecksum= + + A boolean. When true, specifies if UDP checksum is calculated for transmitted packets over IPv4. + + + + UDP6ZeroChecksumTx= + + A boolean. When true, skip UDP checksum calculation for transmitted packets over IPv6. + + + + UDP6ZeroChecksumRx= + + A boolean. When true, allows incoming UDP packets over IPv6 with zero checksum field. + + + + DestinationPort= + + Specifies destination port. Defaults to 6081. + + + + FlowLabel= + + Specifies the flow label to use in outgoing packets. + + + + + [Tunnel] Section Options The [Tunnel] section only applies for diff --git a/src/network/netdev/geneve.c b/src/network/netdev/geneve.c new file mode 100644 index 0000000..bb9807b --- /dev/null +++ b/src/network/netdev/geneve.c @@ -0,0 +1,394 @@ +/*** + This file is part of systemd. + + Copyright 2017 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 . +***/ + +#include + +#include "alloc-util.h" +#include "conf-parser.h" +#include "extract-word.h" +#include "geneve.h" +#include "parse-util.h" +#include "sd-netlink.h" +#include "string-util.h" +#include "strv.h" +#include "missing.h" +#include "networkd-manager.h" + +#define GENEVE_FLOW_LABEL_MAX_MASK 0xFFFFFU +#define DEFAULT_GENEVE_DESTINATION_PORT 6081 + +/* callback for geneve netdev's created without a backing Link */ +static int geneve_netdev_create_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { + _cleanup_netdev_unref_ NetDev *netdev = userdata; + int r; + + assert(netdev->state != _NETDEV_STATE_INVALID); + + r = sd_netlink_message_get_errno(m); + if (r == -EEXIST) + log_netdev_info(netdev, "Geneve netdev exists, using existing without changing its parameters"); + else if (r < 0) { + log_netdev_warning_errno(netdev, r, "Geneve netdev could not be created: %m"); + netdev_drop(netdev); + + return 1; + } + + log_netdev_debug(netdev, "Geneve created"); + + return 1; +} + +static int netdev_geneve_create(NetDev *netdev) { + _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL; + Geneve *v; + int r; + + assert(netdev); + + v = GENEVE(netdev); + + r = sd_rtnl_message_new_link(netdev->manager->rtnl, &m, RTM_NEWLINK, 0); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not allocate RTM_NEWLINK message: %m"); + + r = sd_netlink_message_append_string(m, IFLA_IFNAME, netdev->ifname); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_IFNAME, attribute: %m"); + + if (netdev->mac) { + r = sd_netlink_message_append_ether_addr(m, IFLA_ADDRESS, netdev->mac); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_ADDRESS attribute: %m"); + } + + if (netdev->mtu) { + r = sd_netlink_message_append_u32(m, IFLA_MTU, netdev->mtu); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_MTU attribute: %m"); + } + + r = sd_netlink_message_open_container(m, IFLA_LINKINFO); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_LINKINFO attribute: %m"); + + r = sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, netdev_kind_to_string(netdev->kind)); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m"); + + if (v->id <= GENEVE_VID_MAX) { + r = sd_netlink_message_append_u32(m, IFLA_GENEVE_ID, v->id); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_ID attribute: %m"); + } + + if (!in_addr_is_null(v->remote_family, &v->remote)) { + + if (v->remote_family == AF_INET) + r = sd_netlink_message_append_in_addr(m, IFLA_GENEVE_REMOTE, &v->remote.in); + else + r = sd_netlink_message_append_in6_addr(m, IFLA_GENEVE_REMOTE6, &v->remote.in6); + + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_GROUP attribute: %m"); + + } + + if (v->ttl) { + r = sd_netlink_message_append_u8(m, IFLA_GENEVE_TTL, v->ttl); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_TTL attribute: %m"); + } + + r = sd_netlink_message_append_u8(m, IFLA_GENEVE_TOS, v->tos); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_TOS attribute: %m"); + + r = sd_netlink_message_append_u8(m, IFLA_GENEVE_UDP_CSUM, v->udpcsum); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_UDP_CSUM attribute: %m"); + + r = sd_netlink_message_append_u8(m, IFLA_GENEVE_UDP_ZERO_CSUM6_TX, v->udp6zerocsumtx); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_UDP_ZERO_CSUM6_TX attribute: %m"); + + r = sd_netlink_message_append_u8(m, IFLA_GENEVE_UDP_ZERO_CSUM6_RX, v->udp6zerocsumrx); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_UDP_ZERO_CSUM6_RX attribute: %m"); + + if (v->dest_port != DEFAULT_GENEVE_DESTINATION_PORT) { + r = sd_netlink_message_append_u16(m, IFLA_GENEVE_PORT, htobe16(v->dest_port)); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_PORT attribute: %m"); + } + + if (v->flow_label > 0) { + r = sd_netlink_message_append_u32(m, IFLA_GENEVE_LABEL, htobe32(v->flow_label)); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_LABEL attribute: %m"); + } + + r = sd_netlink_message_close_container(m); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m"); + + r = sd_netlink_message_close_container(m); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not append IFLA_LINKINFO attribute: %m"); + + r = sd_netlink_call_async(netdev->manager->rtnl, m, geneve_netdev_create_handler, netdev, 0, NULL); + if (r < 0) + return log_netdev_error_errno(netdev, r, "Could not send rtnetlink message: %m"); + + netdev_ref(netdev); + + netdev->state = NETDEV_STATE_CREATING; + + log_netdev_debug(netdev, "Creating"); + + + return r; +} + +int config_parse_geneve_vni(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) { + Geneve *v = userdata; + uint32_t f; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(data); + + r = safe_atou32(rvalue, &f); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse Geneve VNI '%s'.", rvalue); + return 0; + } + + if (f > GENEVE_VID_MAX){ + log_syntax(unit, LOG_ERR, filename, line, r, "Geneve VNI out is of range '%s'.", rvalue); + return 0; + } + + v->id = f; + + return 0; +} + +int config_parse_geneve_tos(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) { + Geneve *v = userdata; + uint8_t f; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(data); + + r = safe_atou8(rvalue, &f); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse Geneve TOS '%s'.", rvalue); + return 0; + } + + v->tos = f; + + return 0; +} + +int config_parse_geneve_ttl(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) { + Geneve *v = userdata; + uint8_t f; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(data); + + r = safe_atou8(rvalue, &f); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse Geneve TTL '%s'.", rvalue); + return 0; + } + + if (f == 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Invalid Geneve TTL '%s'.", rvalue); + return 0; + } + + v->ttl = f; + + return 0; +} + +int config_parse_geneve_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) { + Geneve *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, "geneve '%s' address is invalid, ignoring assignment: %s", lvalue, rvalue); + return 0; + } + + r = in_addr_is_multicast(f, &buffer); + if (r > 0) { + log_syntax(unit, LOG_ERR, filename, line, 0, "geneve invalid multicast '%s' address, ignoring assignment: %s", lvalue, rvalue); + return 0; + } + + v->remote_family = f; + *addr = buffer; + + return 0; +} + +int config_parse_geneve_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) { + Geneve *v = userdata; + uint16_t port; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(data); + + r = parse_ip_port(rvalue, &port); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse Geneve destination port '%s'.", rvalue); + return 0; + } + + v->dest_port = port; + + return 0; +} + +int config_parse_geneve_flow_label(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) { + Geneve *v = userdata; + uint32_t f; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(data); + + r = safe_atou32(rvalue, &f); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse Geneve flow label '%s'.", rvalue); + return 0; + } + + if (f & ~GENEVE_FLOW_LABEL_MAX_MASK) { + log_syntax(unit, LOG_ERR, filename, line, r, + "Geneve flow label '%s' not valid. Flow label range should be [0-1048575].", rvalue); + return 0; + } + + v->flow_label = f; + + return 0; +} + +static void geneve_init(NetDev *netdev) { + Geneve *v; + + assert(netdev); + + v = GENEVE(netdev); + + assert(v); + + v->id = GENEVE_VID_MAX + 1; + v->dest_port = DEFAULT_GENEVE_DESTINATION_PORT; + v->udpcsum = false; + v->udp6zerocsumtx = false; + v->udp6zerocsumrx = false; +} + +const NetDevVTable geneve_vtable = { + .object_size = sizeof(Geneve), + .init = geneve_init, + .sections = "Match\0NetDev\0GENEVE\0", + .create = netdev_geneve_create, + .create_type = NETDEV_CREATE_INDEPENDENT, +}; diff --git a/src/network/netdev/geneve.h b/src/network/netdev/geneve.h new file mode 100644 index 0000000..3ba599a --- /dev/null +++ b/src/network/netdev/geneve.h @@ -0,0 +1,119 @@ +#pragma once + +/*** + This file is part of systemd. + + Copyright 2017 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 . +***/ + +typedef struct Geneve Geneve; + +#include "in-addr-util.h" +#include "netdev.h" +#include "networkd-link.h" +#include "networkd-network.h" +#include "netdev.h" + +#define GENEVE_VID_MAX (1u << 24) - 1 + +struct Geneve { + NetDev meta; + + uint32_t id; + uint32_t flow_label; + + int remote_family; + + uint8_t tos; + uint8_t ttl; + + uint16_t dest_port; + + bool udpcsum; + bool udp6zerocsumtx; + bool udp6zerocsumrx; + + union in_addr_union remote; +}; + +DEFINE_NETDEV_CAST(GENEVE, Geneve); +extern const NetDevVTable geneve_vtable; + +int config_parse_geneve_vni(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); + +int config_parse_geneve_tos(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); + +int config_parse_geneve_ttl(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); + +int config_parse_geneve_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); + +int config_parse_geneve_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); + +int config_parse_geneve_flow_label(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); diff --git a/src/network/netdev/netdev-gperf.gperf b/src/network/netdev/netdev-gperf.gperf index 077fbc1..a27a3d5 100644 --- a/src/network/netdev/netdev-gperf.gperf +++ b/src/network/netdev/netdev-gperf.gperf @@ -4,6 +4,7 @@ #include "network-internal.h" #include "netdev/bond.h" #include "netdev/bridge.h" +#include "netdev/geneve.h" #include "netdev/ipvlan.h" #include "netdev/macvlan.h" #include "netdev/tunnel.h" @@ -80,6 +81,15 @@ VXLAN.MaximumFDBEntries, config_parse_unsigned, 0, VXLAN.PortRange, config_parse_port_range, 0, 0 VXLAN.DestinationPort, config_parse_destination_port, 0, offsetof(VxLan, dest_port) VXLAN.FlowLabel, config_parse_flow_label, 0, 0 +GENEVE.Id, config_parse_geneve_vni, 0, offsetof(Geneve, id) +GENEVE.Remote, config_parse_geneve_address, 0, offsetof(Geneve, remote) +GENEVE.TOS, config_parse_geneve_tos, 0, offsetof(Geneve, tos) +GENEVE.TTL, config_parse_geneve_ttl, 0, offsetof(Geneve, ttl) +GENEVE.UDPChecksum, config_parse_bool, 0, offsetof(Geneve, udpcsum) +GENEVE.UDP6ZeroCheckSumRx, config_parse_bool, 0, offsetof(Geneve, udp6zerocsumrx) +GENEVE.UDP6ZeroCheckSumTx, config_parse_bool, 0, offsetof(Geneve, udp6zerocsumtx) +GENEVE.DestinationPort, config_parse_geneve_destination_port, 0, offsetof(Geneve, dest_port) +GENEVE.FlowLabel, config_parse_geneve_flow_label, 0, 0 Tun.OneQueue, config_parse_bool, 0, offsetof(TunTap, one_queue) Tun.MultiQueue, config_parse_bool, 0, offsetof(TunTap, multi_queue) Tun.PacketInfo, config_parse_bool, 0, offsetof(TunTap, packet_info) diff --git a/src/network/netdev/netdev.c b/src/network/netdev/netdev.c index 9b9e83d..3848c86 100644 --- a/src/network/netdev/netdev.c +++ b/src/network/netdev/netdev.c @@ -35,6 +35,7 @@ #include "netdev/bridge.h" #include "netdev/bond.h" +#include "netdev/geneve.h" #include "netdev/vlan.h" #include "netdev/macvlan.h" #include "netdev/ipvlan.h" @@ -69,6 +70,7 @@ const NetDevVTable * const netdev_vtable[_NETDEV_KIND_MAX] = { [NETDEV_KIND_IP6TNL] = &ip6tnl_vtable, [NETDEV_KIND_VRF] = &vrf_vtable, [NETDEV_KIND_VCAN] = &vcan_vtable, + [NETDEV_KIND_GENEVE] = &geneve_vtable, }; static const char* const netdev_kind_table[_NETDEV_KIND_MAX] = { @@ -94,6 +96,7 @@ static const char* const netdev_kind_table[_NETDEV_KIND_MAX] = { [NETDEV_KIND_IP6TNL] = "ip6tnl", [NETDEV_KIND_VRF] = "vrf", [NETDEV_KIND_VCAN] = "vcan", + [NETDEV_KIND_GENEVE] = "geneve", }; DEFINE_STRING_TABLE_LOOKUP(netdev_kind, NetDevKind); diff --git a/src/network/netdev/netdev.h b/src/network/netdev/netdev.h index 37c7431..a961e2a 100644 --- a/src/network/netdev/netdev.h +++ b/src/network/netdev/netdev.h @@ -57,6 +57,7 @@ typedef enum NetDevKind { NETDEV_KIND_TAP, NETDEV_KIND_VRF, NETDEV_KIND_VCAN, + NETDEV_KIND_GENEVE, _NETDEV_KIND_MAX, _NETDEV_KIND_INVALID = -1 } NetDevKind;