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 <linux/if_bonding.h>
  25
  26 #include "conf-parser.h"
  27 #include "sd-rtnl.h"
  28 #include "networkd-netdev-bond.h"
  29 #include "missing.h"
  30
  31 static const char* const bond_mode_table[_NETDEV_BOND_MODE_MAX] = {
  32         [NETDEV_BOND_MODE_BALANCE_RR] = "balance-rr",
  33         [NETDEV_BOND_MODE_ACTIVE_BACKUP] = "active-backup",
  34         [NETDEV_BOND_MODE_BALANCE_XOR] = "balance-xor",
  35         [NETDEV_BOND_MODE_BROADCAST] = "broadcast",
  36         [NETDEV_BOND_MODE_802_3AD] = "802.3ad",
  37         [NETDEV_BOND_MODE_BALANCE_TLB] = "balance-tlb",
  38         [NETDEV_BOND_MODE_BALANCE_ALB] = "balance-alb",
  39 };
  40
  41 DEFINE_STRING_TABLE_LOOKUP(bond_mode, BondMode);
  42 DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_mode, bond_mode, BondMode, "Failed to parse bond mode");
  43
  44
  45 static const char* const bond_xmit_hash_policy_table[_NETDEV_BOND_XMIT_HASH_POLICY_MAX] = {
  46         [NETDEV_BOND_XMIT_HASH_POLICY_LAYER2] = "layer2",
  47         [NETDEV_BOND_XMIT_HASH_POLICY_LAYER34] = "layer3+4",
  48         [NETDEV_BOND_XMIT_HASH_POLICY_LAYER23] = "layer2+3",
  49         [NETDEV_BOND_XMIT_HASH_POLICY_ENCAP23] = "encap2+3",
  50         [NETDEV_BOND_XMIT_HASH_POLICY_ENCAP34] = "encap3+4",
  51 };
  52
  53 DEFINE_STRING_TABLE_LOOKUP(bond_xmit_hash_policy, BondXmitHashPolicy);
  54 DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_xmit_hash_policy,
  55                          bond_xmit_hash_policy,
  56                          BondXmitHashPolicy,
  57                          "Failed to parse bond transmit hash policy")
  58
  59 static const char* const bond_lacp_rate_table[_NETDEV_BOND_LACP_RATE_MAX] = {
  60         [NETDEV_BOND_LACP_RATE_SLOW] = "slow",
  61         [NETDEV_BOND_LACP_RATE_FAST] = "fast",
  62 };
  63
  64 DEFINE_STRING_TABLE_LOOKUP(bond_lacp_rate, BondLacpRate);
  65 DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_lacp_rate, bond_lacp_rate, BondLacpRate, "Failed to parse bond lacp rate")
  66
  67 static uint8_t bond_mode_to_kernel(BondMode mode) {
  68         switch (mode) {
  69         case NETDEV_BOND_MODE_BALANCE_RR:
  70                 return BOND_MODE_ROUNDROBIN;
  71         case NETDEV_BOND_MODE_ACTIVE_BACKUP:
  72                 return BOND_MODE_ACTIVEBACKUP;
  73         case NETDEV_BOND_MODE_BALANCE_XOR:
  74                 return BOND_MODE_XOR;
  75         case NETDEV_BOND_MODE_BROADCAST:
  76                 return BOND_MODE_BROADCAST;
  77         case NETDEV_BOND_MODE_802_3AD:
  78                 return BOND_MODE_8023AD;
  79         case NETDEV_BOND_MODE_BALANCE_TLB:
  80                 return BOND_MODE_TLB;
  81         case NETDEV_BOND_MODE_BALANCE_ALB:
  82                 return BOND_MODE_ALB;
  83         default:
  84                 return (uint8_t) -1;
  85         }
  86 }
  87
  88 static uint8_t bond_xmit_hash_policy_to_kernel(BondXmitHashPolicy policy) {
  89         switch (policy) {
  90         case NETDEV_BOND_XMIT_HASH_POLICY_LAYER2:
  91                 return BOND_XMIT_POLICY_LAYER2;
  92         case NETDEV_BOND_XMIT_HASH_POLICY_LAYER34:
  93                 return BOND_XMIT_POLICY_LAYER34;
  94         case NETDEV_BOND_XMIT_HASH_POLICY_LAYER23:
  95                 return BOND_XMIT_POLICY_LAYER23;
  96         case NETDEV_BOND_XMIT_HASH_POLICY_ENCAP23:
  97                 return BOND_XMIT_POLICY_ENCAP23;
  98         case NETDEV_BOND_XMIT_HASH_POLICY_ENCAP34:
  99                 return BOND_XMIT_POLICY_ENCAP34;
 100         default:
 101                 return (uint8_t) -1;
 102         }
 103 }
 104
 105 static int netdev_bond_fill_message_create(NetDev *netdev, Link *link, sd_rtnl_message *m) {
 106         Bond *b = BOND(netdev);
 107         int r;
 108
 109         assert(netdev);
 110         assert(!link);
 111         assert(b);
 112         assert(m);
 113
 114         if (b->mode != _NETDEV_BOND_MODE_INVALID) {
 115                 r = sd_rtnl_message_append_u8(m, IFLA_BOND_MODE,
 116                                               bond_mode_to_kernel(b->mode));
 117                 if (r < 0) {
 118                         log_netdev_error(netdev,
 119                                          "Could not append IFLA_BOND_MODE attribute: %s",
 120                                          strerror(-r));
 121                         return r;
 122                 }
 123         }
 124
 125         if (b->xmit_hash_policy != _NETDEV_BOND_XMIT_HASH_POLICY_INVALID) {
 126                 r = sd_rtnl_message_append_u8(m, IFLA_BOND_XMIT_HASH_POLICY,
 127                                               bond_xmit_hash_policy_to_kernel(b->xmit_hash_policy));
 128                 if (r < 0) {
 129                         log_netdev_error(netdev,
 130                                          "Could not append IFLA_BOND_XMIT_HASH_POLICY attribute: %s",
 131                                          strerror(-r));
 132                         return r;
 133                 }
 134         }
 135
 136         if (b->lacp_rate != _NETDEV_BOND_LACP_RATE_INVALID &&
 137             b->mode == NETDEV_BOND_MODE_802_3AD) {
 138                 r = sd_rtnl_message_append_u8(m, IFLA_BOND_AD_LACP_RATE, b->lacp_rate );
 139                 if (r < 0) {
 140                         log_netdev_error(netdev,
 141                                          "Could not append IFLA_BOND_AD_LACP_RATE attribute: %s",
 142                                          strerror(-r));
 143                         return r;
 144                 }
 145         }
 146
 147         if (b->miimon != 0) {
 148                 r = sd_rtnl_message_append_u32(m, IFLA_BOND_MIIMON, b->miimon / USEC_PER_MSEC);
 149                 if (r < 0) {
 150                         log_netdev_error(netdev,
 151                                          "Could not append IFLA_BOND_BOND_MIIMON attribute: %s",
 152                                          strerror(-r));
 153                         return r;
 154                 }
 155         }
 156
 157         if (b->downdelay != 0) {
 158                 r = sd_rtnl_message_append_u32(m, IFLA_BOND_DOWNDELAY, b->downdelay / USEC_PER_MSEC);
 159                 if (r < 0) {
 160                         log_netdev_error(netdev,
 161                                          "Could not append IFLA_BOND_DOWNDELAY attribute: %s",
 162                                          strerror(-r));
 163                         return r;
 164                 }
 165         }
 166
 167         if (b->updelay != 0) {
 168                 r = sd_rtnl_message_append_u32(m, IFLA_BOND_UPDELAY, b->updelay / USEC_PER_MSEC);
 169                 if (r < 0) {
 170                         log_netdev_error(netdev,
 171                                          "Could not append IFLA_BOND_UPDELAY attribute: %s",
 172                                          strerror(-r));
 173                         return r;
 174                 }
 175         }
 176
 177         return 0;
 178 }
 179
 180 static void bond_init(NetDev *netdev) {
 181         Bond *b = BOND(netdev);
 182
 183         assert(netdev);
 184         assert(b);
 185
 186         b->mode = _NETDEV_BOND_MODE_INVALID;
 187         b->xmit_hash_policy = _NETDEV_BOND_XMIT_HASH_POLICY_INVALID;
 188         b->lacp_rate = _NETDEV_BOND_LACP_RATE_INVALID;
 189 }
 190
 191 const NetDevVTable bond_vtable = {
 192         .object_size = sizeof(Bond),
 193         .init = bond_init,
 194         .sections = "Match\0NetDev\0Bond\0",
 195         .fill_message_create = netdev_bond_fill_message_create,
 196         .create_type = NETDEV_CREATE_MASTER,
 197 };