src/network/netdev/ipoib.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <linux/if_arp.h>
   4 #include <linux/if_link.h>
   5
   6 #include "ipoib.h"
   7 #include "networkd-network.h"
   8 #include "parse-util.h"
   9 #include "string-table.h"
  10
  11 assert_cc((int) IP_OVER_INFINIBAND_MODE_DATAGRAM  == (int) IPOIB_MODE_DATAGRAM);
  12 assert_cc((int) IP_OVER_INFINIBAND_MODE_CONNECTED == (int) IPOIB_MODE_CONNECTED);
  13
  14 static void netdev_ipoib_init(NetDev *netdev) {
  15         IPoIB *ipoib;
  16
  17         assert(netdev);
  18
  19         ipoib = IPOIB(netdev);
  20
  21         assert(ipoib);
  22
  23         ipoib->mode = _IP_OVER_INFINIBAND_MODE_INVALID;
  24         ipoib->umcast = -1;
  25 }
  26
  27 static int netdev_ipoib_fill_message_create(NetDev *netdev, Link *link, sd_netlink_message *m) {
  28         IPoIB *ipoib;
  29         int r;
  30
  31         assert(netdev);
  32         assert(link);
  33         assert(m);
  34
  35         ipoib = IPOIB(netdev);
  36
  37         assert(ipoib);
  38
  39         if (ipoib->pkey > 0) {
  40                 r = sd_netlink_message_append_u16(m, IFLA_IPOIB_PKEY, ipoib->pkey);
  41                 if (r < 0)
  42                         return r;
  43         }
  44
  45         if (ipoib->mode >= 0) {
  46                 r = sd_netlink_message_append_u16(m, IFLA_IPOIB_MODE, ipoib->mode);
  47                 if (r < 0)
  48                         return r;
  49         }
  50
  51         if (ipoib->umcast >= 0) {
  52                 r = sd_netlink_message_append_u16(m, IFLA_IPOIB_UMCAST, ipoib->umcast);
  53                 if (r < 0)
  54                         return r;
  55         }
  56
  57         return 0;
  58 }
  59
  60 int ipoib_set_netlink_message(Link *link, sd_netlink_message *m) {
  61         int r;
  62
  63         assert(link);
  64         assert(link->network);
  65         assert(m);
  66
  67         r = sd_netlink_message_set_flags(m, NLM_F_REQUEST | NLM_F_ACK);
  68         if (r < 0)
  69                 return r;
  70
  71         r = sd_netlink_message_open_container(m, IFLA_LINKINFO);
  72         if (r < 0)
  73                 return r;
  74
  75         r = sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, link->kind);
  76         if (r < 0)
  77                 return r;
  78
  79         if (link->network->ipoib_mode >= 0) {
  80                 r = sd_netlink_message_append_u16(m, IFLA_IPOIB_MODE, link->network->ipoib_mode);
  81                 if (r < 0)
  82                         return r;
  83         }
  84
  85         if (link->network->ipoib_umcast >= 0) {
  86                 r = sd_netlink_message_append_u16(m, IFLA_IPOIB_UMCAST, link->network->ipoib_umcast);
  87                 if (r < 0)
  88                         return r;
  89         }
  90
  91         r = sd_netlink_message_close_container(m);
  92         if (r < 0)
  93                 return r;
  94
  95         r = sd_netlink_message_close_container(m);
  96         if (r < 0)
  97                 return r;
  98
  99         return 0;
 100 }
 101
 102 static const char * const ipoib_mode_table[_IP_OVER_INFINIBAND_MODE_MAX] = {
 103         [IP_OVER_INFINIBAND_MODE_DATAGRAM]  = "datagram",
 104         [IP_OVER_INFINIBAND_MODE_CONNECTED] = "connected",
 105 };
 106
 107 DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(ipoib_mode, IPoIBMode);
 108 DEFINE_CONFIG_PARSE_ENUM(config_parse_ipoib_mode, ipoib_mode, IPoIBMode, "Failed to parse IPoIB mode");
 109
 110 int config_parse_ipoib_pkey(
 111                 const char *unit,
 112                 const char *filename,
 113                 unsigned line,
 114                 const char *section,
 115                 unsigned section_line,
 116                 const char *lvalue,
 117                 int ltype,
 118                 const char *rvalue,
 119                 void *data,
 120                 void *userdata) {
 121
 122         uint16_t u, *pkey = ASSERT_PTR(data);
 123         int r;
 124
 125         assert(filename);
 126         assert(lvalue);
 127         assert(rvalue);
 128
 129         if (isempty(rvalue)) {
 130                 *pkey = 0; /* 0 means unset. */
 131                 return 0;
 132         }
 133
 134         r = safe_atou16(rvalue, &u);
 135         if (r < 0) {
 136                 log_syntax(unit, LOG_WARNING, filename, line, r,
 137                            "Failed to parse IPoIB pkey '%s', ignoring assignment: %m",
 138                            rvalue);
 139                 return 0;
 140         }
 141         if (IN_SET(u, 0, 0x8000)) {
 142                 log_syntax(unit, LOG_WARNING, filename, line, 0,
 143                            "IPoIB pkey cannot be 0 nor 0x8000, ignoring assignment: %s",
 144                            rvalue);
 145                 return 0;
 146         }
 147
 148         *pkey = u;
 149         return 0;
 150 }
 151
 152
 153 const NetDevVTable ipoib_vtable = {
 154         .object_size = sizeof(IPoIB),
 155         .sections = NETDEV_COMMON_SECTIONS "IPoIB\0",
 156         .init = netdev_ipoib_init,
 157         .fill_message_create = netdev_ipoib_fill_message_create,
 158         .create_type = NETDEV_CREATE_STACKED,
 159         .iftype = ARPHRD_INFINIBAND,
 160         .generate_mac = true,
 161 };