src/network/networkd-netdev-bond.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4     This file is part of systemd.
   5
   6     Copyright 2014  Tom Gundersen <teg@jklm.no>
   7     Copyright 2014  Susant Sahani
   8
   9     systemd is free software; you can redistribute it and/or modify it
  10     under the terms of the GNU Lesser General Public License as published by
  11     the Free Software Foundation; either version 2.1 of the License, or
  12     (at your option) any later version.
  13
  14     systemd is distributed in the hope that it will be useful, but
  15     WITHOUT ANY WARRANTY; without even the implied warranty of
  16     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17     Lesser General Public License for more details.
  18
  19     You should have received a copy of the GNU Lesser General Public License
  20     along with systemd; If not, see <http://www.gnu.org/licenses/>.
  21 ***/
  22
  23 #include <netinet/ether.h>
  24 #include <arpa/inet.h>
  25 #include <linux/if_bonding.h>
  26
  27 #include "conf-parser.h"
  28 #include "sd-rtnl.h"
  29 #include "networkd-netdev-bond.h"
  30 #include "missing.h"
  31
  32 static const char* const bond_mode_table[_NETDEV_BOND_MODE_MAX] = {
  33         [NETDEV_BOND_MODE_BALANCE_RR] = "balance-rr",
  34         [NETDEV_BOND_MODE_ACTIVE_BACKUP] = "active-backup",
  35         [NETDEV_BOND_MODE_BALANCE_XOR] = "balance-xor",
  36         [NETDEV_BOND_MODE_BROADCAST] = "broadcast",
  37         [NETDEV_BOND_MODE_802_3AD] = "802.3ad",
  38         [NETDEV_BOND_MODE_BALANCE_TLB] = "balance-tlb",
  39         [NETDEV_BOND_MODE_BALANCE_ALB] = "balance-alb",
  40 };
  41
  42 DEFINE_STRING_TABLE_LOOKUP(bond_mode, BondMode);
  43 DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_mode, bond_mode, BondMode, "Failed to parse bond mode");
  44
  45
  46 static const char* const bond_xmit_hash_policy_table[_NETDEV_BOND_XMIT_HASH_POLICY_MAX] = {
  47         [NETDEV_BOND_XMIT_HASH_POLICY_LAYER2] = "layer2",
  48         [NETDEV_BOND_XMIT_HASH_POLICY_LAYER34] = "layer3+4",
  49         [NETDEV_BOND_XMIT_HASH_POLICY_LAYER23] = "layer2+3",
  50         [NETDEV_BOND_XMIT_HASH_POLICY_ENCAP23] = "encap2+3",
  51         [NETDEV_BOND_XMIT_HASH_POLICY_ENCAP34] = "encap3+4",
  52 };
  53
  54 DEFINE_STRING_TABLE_LOOKUP(bond_xmit_hash_policy, BondXmitHashPolicy);
  55 DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_xmit_hash_policy,
  56                          bond_xmit_hash_policy,
  57                          BondXmitHashPolicy,
  58                          "Failed to parse bond transmit hash policy")
  59
  60 static const char* const bond_lacp_rate_table[_NETDEV_BOND_LACP_RATE_MAX] = {
  61         [NETDEV_BOND_LACP_RATE_SLOW] = "slow",
  62         [NETDEV_BOND_LACP_RATE_FAST] = "fast",
  63 };
  64
  65 DEFINE_STRING_TABLE_LOOKUP(bond_lacp_rate, BondLacpRate);
  66 DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_lacp_rate, bond_lacp_rate, BondLacpRate, "Failed to parse bond lacp rate")
  67
  68 static uint8_t bond_mode_to_kernel(BondMode mode) {
  69         switch (mode) {
  70         case NETDEV_BOND_MODE_BALANCE_RR:
  71                 return BOND_MODE_ROUNDROBIN;
  72         case NETDEV_BOND_MODE_ACTIVE_BACKUP:
  73                 return BOND_MODE_ACTIVEBACKUP;
  74         case NETDEV_BOND_MODE_BALANCE_XOR:
  75                 return BOND_MODE_XOR;
  76         case NETDEV_BOND_MODE_BROADCAST:
  77                 return BOND_MODE_BROADCAST;
  78         case NETDEV_BOND_MODE_802_3AD:
  79                 return BOND_MODE_8023AD;
  80         case NETDEV_BOND_MODE_BALANCE_TLB:
  81                 return BOND_MODE_TLB;
  82         case NETDEV_BOND_MODE_BALANCE_ALB:
  83                 return BOND_MODE_ALB;
  84         default:
  85                 return (uint8_t) -1;
  86         }
  87 }
  88
  89 static uint8_t bond_xmit_hash_policy_to_kernel(BondXmitHashPolicy policy) {
  90         switch (policy) {
  91         case NETDEV_BOND_XMIT_HASH_POLICY_LAYER2:
  92                 return BOND_XMIT_POLICY_LAYER2;
  93         case NETDEV_BOND_XMIT_HASH_POLICY_LAYER34:
  94                 return BOND_XMIT_POLICY_LAYER34;
  95         case NETDEV_BOND_XMIT_HASH_POLICY_LAYER23:
  96                 return BOND_XMIT_POLICY_LAYER23;
  97         case NETDEV_BOND_XMIT_HASH_POLICY_ENCAP23:
  98                 return BOND_XMIT_POLICY_ENCAP23;
  99         case NETDEV_BOND_XMIT_HASH_POLICY_ENCAP34:
 100                 return BOND_XMIT_POLICY_ENCAP34;
 101         default:
 102                 return (uint8_t) -1;
 103         }
 104 }
 105
 106 static int netdev_bond_fill_message_create(NetDev *netdev, Link *link, sd_rtnl_message *m) {
 107         Bond *b = BOND(netdev);
 108         int r;
 109
 110         assert(netdev);
 111         assert(!link);
 112         assert(b);
 113         assert(m);
 114
 115         if (b->mode != _NETDEV_BOND_MODE_INVALID) {
 116                 r = sd_rtnl_message_append_u8(m, IFLA_BOND_MODE,
 117                                               bond_mode_to_kernel(b->mode));
 118                 if (r < 0) {
 119                         log_error_netdev(netdev,
 120                                          "Could not append IFLA_BOND_MODE attribute: %s",
 121                                          strerror(-r));
 122                         return r;
 123                 }
 124         }
 125
 126         if (b->xmit_hash_policy != _NETDEV_BOND_XMIT_HASH_POLICY_INVALID) {
 127                 r = sd_rtnl_message_append_u8(m, IFLA_BOND_XMIT_HASH_POLICY,
 128                                               bond_xmit_hash_policy_to_kernel(b->xmit_hash_policy));
 129                 if (r < 0) {
 130                         log_error_netdev(netdev,
 131                                          "Could not append IFLA_BOND_XMIT_HASH_POLICY attribute: %s",
 132                                          strerror(-r));
 133                         return r;
 134                 }
 135         }
 136
 137         if (b->lacp_rate != _NETDEV_BOND_LACP_RATE_INVALID &&
 138             b->mode == NETDEV_BOND_MODE_802_3AD) {
 139                 r = sd_rtnl_message_append_u8(m, IFLA_BOND_AD_LACP_RATE, b->lacp_rate );
 140                 if (r < 0) {
 141                         log_error_netdev(netdev,
 142                                          "Could not append IFLA_BOND_AD_LACP_RATE attribute: %s",
 143                                          strerror(-r));
 144                         return r;
 145                 }
 146         }
 147
 148         return 0;
 149 }
 150
 151 static void bond_init(NetDev *netdev) {
 152         Bond *b = BOND(netdev);
 153
 154         assert(netdev);
 155         assert(b);
 156
 157         b->mode = _NETDEV_BOND_MODE_INVALID;
 158         b->xmit_hash_policy = _NETDEV_BOND_XMIT_HASH_POLICY_INVALID;
 159         b->lacp_rate = _NETDEV_BOND_LACP_RATE_INVALID;
 160 }
 161
 162 const NetDevVTable bond_vtable = {
 163         .object_size = sizeof(Bond),
 164         .init = bond_init,
 165         .sections = "Match\0NetDev\0Bond\0",
 166         .fill_message_create = netdev_bond_fill_message_create,
 167         .create_type = NETDEV_CREATE_MASTER,
 168 };