summaryrefslogtreecommitdiffstats
path: root/src/network/netdev/bond.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/network/netdev/bond.c')
-rw-r--r--src/network/netdev/bond.c415
1 files changed, 415 insertions, 0 deletions
diff --git a/src/network/netdev/bond.c b/src/network/netdev/bond.c
new file mode 100644
index 0000000..4d75a0d
--- /dev/null
+++ b/src/network/netdev/bond.c
@@ -0,0 +1,415 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <netinet/in.h>
+#include <linux/if_arp.h>
+
+#include "alloc-util.h"
+#include "bond.h"
+#include "bond-util.h"
+#include "conf-parser.h"
+#include "ether-addr-util.h"
+#include "extract-word.h"
+#include "netlink-util.h"
+#include "networkd-manager.h"
+#include "string-table.h"
+
+/*
+ * Number of seconds between instances where the bonding
+ * driver sends learning packets to each slaves peer switch
+ */
+#define LEARNING_PACKETS_INTERVAL_MIN_SEC (1 * USEC_PER_SEC)
+#define LEARNING_PACKETS_INTERVAL_MAX_SEC (0x7fffffff * USEC_PER_SEC)
+
+/* Number of IGMP membership reports to be issued after
+ * a failover event.
+ */
+#define RESEND_IGMP_MIN 0
+#define RESEND_IGMP_MAX 255
+#define RESEND_IGMP_DEFAULT 1
+
+/*
+ * Number of packets to transmit through a slave before
+ * moving to the next one.
+ */
+#define PACKETS_PER_SLAVE_MIN 0
+#define PACKETS_PER_SLAVE_MAX 65535
+#define PACKETS_PER_SLAVE_DEFAULT 1
+
+/*
+ * Number of peer notifications (gratuitous ARPs and
+ * unsolicited IPv6 Neighbor Advertisements) to be issued after a
+ * failover event.
+ */
+#define GRATUITOUS_ARP_MIN 0
+#define GRATUITOUS_ARP_MAX 255
+#define GRATUITOUS_ARP_DEFAULT 1
+
+DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_mode, bond_mode, BondMode, "Failed to parse bond mode");
+DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_xmit_hash_policy,
+ bond_xmit_hash_policy,
+ BondXmitHashPolicy,
+ "Failed to parse bond transmit hash policy");
+DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_lacp_rate, bond_lacp_rate, BondLacpRate, "Failed to parse bond lacp rate");
+DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_ad_select, bond_ad_select, BondAdSelect, "Failed to parse bond AD select");
+DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_fail_over_mac, bond_fail_over_mac, BondFailOverMac, "Failed to parse bond fail over MAC");
+DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_arp_validate, bond_arp_validate, BondArpValidate, "Failed to parse bond arp validate");
+DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_arp_all_targets, bond_arp_all_targets, BondArpAllTargets, "Failed to parse bond Arp all targets");
+DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_primary_reselect, bond_primary_reselect, BondPrimaryReselect, "Failed to parse bond primary reselect");
+
+static int netdev_bond_fill_message_create(NetDev *netdev, Link *link, sd_netlink_message *m) {
+ assert(!link);
+ assert(m);
+
+ Bond *b = BOND(netdev);
+ int r;
+
+ if (b->mode != _NETDEV_BOND_MODE_INVALID) {
+ r = sd_netlink_message_append_u8(m, IFLA_BOND_MODE, b->mode);
+ if (r < 0)
+ return r;
+ }
+
+ if (b->xmit_hash_policy != _NETDEV_BOND_XMIT_HASH_POLICY_INVALID) {
+ r = sd_netlink_message_append_u8(m, IFLA_BOND_XMIT_HASH_POLICY, b->xmit_hash_policy);
+ if (r < 0)
+ return r;
+ }
+
+ if (b->lacp_rate != _NETDEV_BOND_LACP_RATE_INVALID &&
+ b->mode == NETDEV_BOND_MODE_802_3AD) {
+ r = sd_netlink_message_append_u8(m, IFLA_BOND_AD_LACP_RATE, b->lacp_rate);
+ if (r < 0)
+ return r;
+ }
+
+ if (b->miimon != 0) {
+ r = sd_netlink_message_append_u32(m, IFLA_BOND_MIIMON, b->miimon / USEC_PER_MSEC);
+ if (r < 0)
+ return r;
+ }
+
+ if (b->downdelay != 0) {
+ r = sd_netlink_message_append_u32(m, IFLA_BOND_DOWNDELAY, b->downdelay / USEC_PER_MSEC);
+ if (r < 0)
+ return r;
+ }
+
+ if (b->updelay != 0) {
+ r = sd_netlink_message_append_u32(m, IFLA_BOND_UPDELAY, b->updelay / USEC_PER_MSEC);
+ if (r < 0)
+ return r;
+ }
+
+ if (b->arp_interval != 0) {
+ r = sd_netlink_message_append_u32(m, IFLA_BOND_ARP_INTERVAL, b->arp_interval / USEC_PER_MSEC);
+ if (r < 0)
+ return r;
+
+ if (b->lp_interval >= LEARNING_PACKETS_INTERVAL_MIN_SEC &&
+ b->lp_interval <= LEARNING_PACKETS_INTERVAL_MAX_SEC) {
+ r = sd_netlink_message_append_u32(m, IFLA_BOND_LP_INTERVAL, b->lp_interval / USEC_PER_SEC);
+ if (r < 0)
+ return r;
+ }
+ }
+
+ if (b->ad_select != _NETDEV_BOND_AD_SELECT_INVALID &&
+ b->mode == NETDEV_BOND_MODE_802_3AD) {
+ r = sd_netlink_message_append_u8(m, IFLA_BOND_AD_SELECT, b->ad_select);
+ if (r < 0)
+ return r;
+ }
+
+ if (b->fail_over_mac != _NETDEV_BOND_FAIL_OVER_MAC_INVALID &&
+ b->mode == NETDEV_BOND_MODE_ACTIVE_BACKUP) {
+ r = sd_netlink_message_append_u8(m, IFLA_BOND_FAIL_OVER_MAC, b->fail_over_mac);
+ if (r < 0)
+ return r;
+ }
+
+ if (b->arp_validate != _NETDEV_BOND_ARP_VALIDATE_INVALID) {
+ r = sd_netlink_message_append_u32(m, IFLA_BOND_ARP_VALIDATE, b->arp_validate);
+ if (r < 0)
+ return r;
+ }
+
+ if (b->arp_all_targets != _NETDEV_BOND_ARP_ALL_TARGETS_INVALID) {
+ r = sd_netlink_message_append_u32(m, IFLA_BOND_ARP_ALL_TARGETS, b->arp_all_targets);
+ if (r < 0)
+ return r;
+ }
+
+ if (b->primary_reselect != _NETDEV_BOND_PRIMARY_RESELECT_INVALID) {
+ r = sd_netlink_message_append_u8(m, IFLA_BOND_PRIMARY_RESELECT, b->primary_reselect);
+ if (r < 0)
+ return r;
+ }
+
+ if (b->resend_igmp <= RESEND_IGMP_MAX) {
+ r = sd_netlink_message_append_u32(m, IFLA_BOND_RESEND_IGMP, b->resend_igmp);
+ if (r < 0)
+ return r;
+ }
+
+ if (b->packets_per_slave <= PACKETS_PER_SLAVE_MAX &&
+ b->mode == NETDEV_BOND_MODE_BALANCE_RR) {
+ r = sd_netlink_message_append_u32(m, IFLA_BOND_PACKETS_PER_SLAVE, b->packets_per_slave);
+ if (r < 0)
+ return r;
+ }
+
+ if (b->num_grat_arp <= GRATUITOUS_ARP_MAX) {
+ r = sd_netlink_message_append_u8(m, IFLA_BOND_NUM_PEER_NOTIF, b->num_grat_arp);
+ if (r < 0)
+ return r;
+ }
+
+ if (b->min_links != 0) {
+ r = sd_netlink_message_append_u32(m, IFLA_BOND_MIN_LINKS, b->min_links);
+ if (r < 0)
+ return r;
+ }
+
+ if (b->ad_actor_sys_prio != 0) {
+ r = sd_netlink_message_append_u16(m, IFLA_BOND_AD_ACTOR_SYS_PRIO, b->ad_actor_sys_prio);
+ if (r < 0)
+ return r;
+ }
+
+ if (b->ad_user_port_key != 0) {
+ r = sd_netlink_message_append_u16(m, IFLA_BOND_AD_USER_PORT_KEY, b->ad_user_port_key);
+ if (r < 0)
+ return r;
+ }
+
+ if (!ether_addr_is_null(&b->ad_actor_system)) {
+ r = sd_netlink_message_append_ether_addr(m, IFLA_BOND_AD_ACTOR_SYSTEM, &b->ad_actor_system);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_netlink_message_append_u8(m, IFLA_BOND_ALL_SLAVES_ACTIVE, b->all_slaves_active);
+ if (r < 0)
+ return r;
+
+ if (b->tlb_dynamic_lb >= 0) {
+ r = sd_netlink_message_append_u8(m, IFLA_BOND_TLB_DYNAMIC_LB, b->tlb_dynamic_lb);
+ if (r < 0)
+ return r;
+ }
+
+ if (b->arp_interval > 0 && !ordered_set_isempty(b->arp_ip_targets)) {
+ void *val;
+ int n = 0;
+
+ r = sd_netlink_message_open_container(m, IFLA_BOND_ARP_IP_TARGET);
+ if (r < 0)
+ return r;
+
+ ORDERED_SET_FOREACH(val, b->arp_ip_targets) {
+ r = sd_netlink_message_append_u32(m, n++, PTR_TO_UINT32(val));
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_netlink_message_close_container(m);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+int config_parse_arp_ip_target_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) {
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ Bond *b = BOND(userdata);
+ int r;
+
+ if (isempty(rvalue)) {
+ b->arp_ip_targets = ordered_set_free(b->arp_ip_targets);
+ return 0;
+ }
+
+ for (const char *p = rvalue;;) {
+ _cleanup_free_ char *n = NULL;
+ union in_addr_union ip;
+
+ r = extract_first_word(&p, &n, NULL, 0);
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse Bond ARP IP target address, ignoring assignment: %s",
+ rvalue);
+ return 0;
+ }
+ if (r == 0)
+ return 0;
+
+ r = in_addr_from_string(AF_INET, n, &ip);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Bond ARP IP target address is invalid, ignoring assignment: %s", n);
+ continue;
+ }
+
+ if (ordered_set_size(b->arp_ip_targets) >= NETDEV_BOND_ARP_TARGETS_MAX) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Too many ARP IP targets are specified. The maximum number is %d. Ignoring assignment: %s",
+ NETDEV_BOND_ARP_TARGETS_MAX, n);
+ continue;
+ }
+
+ r = ordered_set_ensure_put(&b->arp_ip_targets, NULL, UINT32_TO_PTR(ip.in.s_addr));
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r == -EEXIST)
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Bond ARP IP target address is duplicated, ignoring assignment: %s", n);
+ if (r < 0)
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to store bond ARP IP target address '%s', ignoring assignment: %m", n);
+ }
+}
+
+int config_parse_ad_actor_sys_prio(
+ 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) {
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ Bond *b = ASSERT_PTR(userdata);
+
+ return config_parse_uint16_bounded(
+ unit, filename, line, section, section_line, lvalue, rvalue,
+ 1, UINT16_MAX, true,
+ &b->ad_actor_sys_prio);
+}
+
+int config_parse_ad_user_port_key(
+ 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) {
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ Bond *b = ASSERT_PTR(userdata);
+
+ return config_parse_uint16_bounded(
+ unit, filename, line, section, section_line, lvalue, rvalue,
+ 0, 1023, /* ignoring= */ true,
+ &b->ad_user_port_key);
+}
+
+int config_parse_ad_actor_system(
+ 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) {
+ Bond *b = userdata;
+ struct ether_addr n;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = parse_ether_addr(rvalue, &n);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Not a valid MAC address %s. Ignoring assignment: %m",
+ rvalue);
+ return 0;
+ }
+ if (ether_addr_is_null(&n) || (n.ether_addr_octet[0] & 0x01)) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Not an appropriate MAC address %s, cannot be null or multicast. Ignoring assignment.",
+ rvalue);
+ return 0;
+ }
+
+ b->ad_actor_system = n;
+
+ return 0;
+}
+
+static void bond_done(NetDev *netdev) {
+ Bond *b = BOND(netdev);
+
+ ordered_set_free(b->arp_ip_targets);
+}
+
+static void bond_init(NetDev *netdev) {
+ Bond *b = BOND(netdev);
+
+ b->mode = _NETDEV_BOND_MODE_INVALID;
+ b->xmit_hash_policy = _NETDEV_BOND_XMIT_HASH_POLICY_INVALID;
+ b->lacp_rate = _NETDEV_BOND_LACP_RATE_INVALID;
+ b->ad_select = _NETDEV_BOND_AD_SELECT_INVALID;
+ b->fail_over_mac = _NETDEV_BOND_FAIL_OVER_MAC_INVALID;
+ b->arp_validate = _NETDEV_BOND_ARP_VALIDATE_INVALID;
+ b->arp_all_targets = _NETDEV_BOND_ARP_ALL_TARGETS_INVALID;
+ b->primary_reselect = _NETDEV_BOND_PRIMARY_RESELECT_INVALID;
+
+ b->all_slaves_active = false;
+ b->tlb_dynamic_lb = -1;
+
+ b->resend_igmp = RESEND_IGMP_DEFAULT;
+ b->packets_per_slave = PACKETS_PER_SLAVE_DEFAULT;
+ b->num_grat_arp = GRATUITOUS_ARP_DEFAULT;
+ b->lp_interval = LEARNING_PACKETS_INTERVAL_MIN_SEC;
+}
+
+const NetDevVTable bond_vtable = {
+ .object_size = sizeof(Bond),
+ .init = bond_init,
+ .done = bond_done,
+ .sections = NETDEV_COMMON_SECTIONS "Bond\0",
+ .fill_message_create = netdev_bond_fill_message_create,
+ .create_type = NETDEV_CREATE_INDEPENDENT,
+ .iftype = ARPHRD_ETHER,
+ .generate_mac = true,
+};