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authorTom Gundersen <teg@jklm.no>2016-11-13 02:01:19 +0100
committerTom Gundersen <teg@jklm.no>2016-11-13 05:16:49 +0100
commit441e9ae4d96ab8530a1416ba7ede9eee44d35f2d (patch)
tree022127b1140b79b755a17377a186c435a59c020c /src/network/netdev/bond.c
parentc5fcf6e47056a861fb53d4f3bedec68230f9a4e9 (diff)
networkd: netdev - move to separate subdirectory
This could (and should) be made into a separate daemon, at least move the sourcefiles out for now.
Diffstat (limited to 'src/network/netdev/bond.c')
-rw-r--r--src/network/netdev/bond.c444
1 files changed, 444 insertions, 0 deletions
diff --git a/src/network/netdev/bond.c b/src/network/netdev/bond.c
new file mode 100644
index 0000000000..19b0e8da40
--- /dev/null
+++ b/src/network/netdev/bond.c
@@ -0,0 +1,444 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Tom Gundersen <teg@jklm.no>
+ Copyright 2014 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 <http://www.gnu.org/licenses/>.
+***/
+
+#include <netinet/ether.h>
+#include <linux/if_bonding.h>
+
+#include "sd-netlink.h"
+
+#include "alloc-util.h"
+#include "conf-parser.h"
+#include "extract-word.h"
+#include "missing.h"
+#include "netdev/bond.h"
+#include "string-table.h"
+#include "string-util.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
+
+static const char* const bond_mode_table[_NETDEV_BOND_MODE_MAX] = {
+ [NETDEV_BOND_MODE_BALANCE_RR] = "balance-rr",
+ [NETDEV_BOND_MODE_ACTIVE_BACKUP] = "active-backup",
+ [NETDEV_BOND_MODE_BALANCE_XOR] = "balance-xor",
+ [NETDEV_BOND_MODE_BROADCAST] = "broadcast",
+ [NETDEV_BOND_MODE_802_3AD] = "802.3ad",
+ [NETDEV_BOND_MODE_BALANCE_TLB] = "balance-tlb",
+ [NETDEV_BOND_MODE_BALANCE_ALB] = "balance-alb",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(bond_mode, BondMode);
+DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_mode, bond_mode, BondMode, "Failed to parse bond mode");
+
+static const char* const bond_xmit_hash_policy_table[_NETDEV_BOND_XMIT_HASH_POLICY_MAX] = {
+ [NETDEV_BOND_XMIT_HASH_POLICY_LAYER2] = "layer2",
+ [NETDEV_BOND_XMIT_HASH_POLICY_LAYER34] = "layer3+4",
+ [NETDEV_BOND_XMIT_HASH_POLICY_LAYER23] = "layer2+3",
+ [NETDEV_BOND_XMIT_HASH_POLICY_ENCAP23] = "encap2+3",
+ [NETDEV_BOND_XMIT_HASH_POLICY_ENCAP34] = "encap3+4",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(bond_xmit_hash_policy, BondXmitHashPolicy);
+DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_xmit_hash_policy,
+ bond_xmit_hash_policy,
+ BondXmitHashPolicy,
+ "Failed to parse bond transmit hash policy")
+
+static const char* const bond_lacp_rate_table[_NETDEV_BOND_LACP_RATE_MAX] = {
+ [NETDEV_BOND_LACP_RATE_SLOW] = "slow",
+ [NETDEV_BOND_LACP_RATE_FAST] = "fast",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(bond_lacp_rate, BondLacpRate);
+DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_lacp_rate, bond_lacp_rate, BondLacpRate, "Failed to parse bond lacp rate")
+
+static const char* const bond_ad_select_table[_NETDEV_BOND_AD_SELECT_MAX] = {
+ [NETDEV_BOND_AD_SELECT_STABLE] = "stable",
+ [NETDEV_BOND_AD_SELECT_BANDWIDTH] = "bandwidth",
+ [NETDEV_BOND_AD_SELECT_COUNT] = "count",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(bond_ad_select, BondAdSelect);
+DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_ad_select, bond_ad_select, BondAdSelect, "Failed to parse bond AD select");
+
+static const char* const bond_fail_over_mac_table[_NETDEV_BOND_FAIL_OVER_MAC_MAX] = {
+ [NETDEV_BOND_FAIL_OVER_MAC_NONE] = "none",
+ [NETDEV_BOND_FAIL_OVER_MAC_ACTIVE] = "active",
+ [NETDEV_BOND_FAIL_OVER_MAC_FOLLOW] = "follow",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(bond_fail_over_mac, BondFailOverMac);
+DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_fail_over_mac, bond_fail_over_mac, BondFailOverMac, "Failed to parse bond fail over MAC");
+
+static const char *const bond_arp_validate_table[_NETDEV_BOND_ARP_VALIDATE_MAX] = {
+ [NETDEV_BOND_ARP_VALIDATE_NONE] = "none",
+ [NETDEV_BOND_ARP_VALIDATE_ACTIVE]= "active",
+ [NETDEV_BOND_ARP_VALIDATE_BACKUP]= "backup",
+ [NETDEV_BOND_ARP_VALIDATE_ALL]= "all",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(bond_arp_validate, BondArpValidate);
+DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_arp_validate, bond_arp_validate, BondArpValidate, "Failed to parse bond arp validate");
+
+static const char *const bond_arp_all_targets_table[_NETDEV_BOND_ARP_ALL_TARGETS_MAX] = {
+ [NETDEV_BOND_ARP_ALL_TARGETS_ANY] = "any",
+ [NETDEV_BOND_ARP_ALL_TARGETS_ALL] = "all",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(bond_arp_all_targets, BondArpAllTargets);
+DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_arp_all_targets, bond_arp_all_targets, BondArpAllTargets, "Failed to parse bond Arp all targets");
+
+static const char *bond_primary_reselect_table[_NETDEV_BOND_PRIMARY_RESELECT_MAX] = {
+ [NETDEV_BOND_PRIMARY_RESELECT_ALWAYS] = "always",
+ [NETDEV_BOND_PRIMARY_RESELECT_BETTER]= "better",
+ [NETDEV_BOND_PRIMARY_RESELECT_FAILURE]= "failure",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(bond_primary_reselect, BondPrimaryReselect);
+DEFINE_CONFIG_PARSE_ENUM(config_parse_bond_primary_reselect, bond_primary_reselect, BondPrimaryReselect, "Failed to parse bond primary reselect");
+
+static uint8_t bond_mode_to_kernel(BondMode mode) {
+ switch (mode) {
+ case NETDEV_BOND_MODE_BALANCE_RR:
+ return BOND_MODE_ROUNDROBIN;
+ case NETDEV_BOND_MODE_ACTIVE_BACKUP:
+ return BOND_MODE_ACTIVEBACKUP;
+ case NETDEV_BOND_MODE_BALANCE_XOR:
+ return BOND_MODE_XOR;
+ case NETDEV_BOND_MODE_BROADCAST:
+ return BOND_MODE_BROADCAST;
+ case NETDEV_BOND_MODE_802_3AD:
+ return BOND_MODE_8023AD;
+ case NETDEV_BOND_MODE_BALANCE_TLB:
+ return BOND_MODE_TLB;
+ case NETDEV_BOND_MODE_BALANCE_ALB:
+ return BOND_MODE_ALB;
+ default:
+ return (uint8_t) -1;
+ }
+}
+
+static uint8_t bond_xmit_hash_policy_to_kernel(BondXmitHashPolicy policy) {
+ switch (policy) {
+ case NETDEV_BOND_XMIT_HASH_POLICY_LAYER2:
+ return BOND_XMIT_POLICY_LAYER2;
+ case NETDEV_BOND_XMIT_HASH_POLICY_LAYER34:
+ return BOND_XMIT_POLICY_LAYER34;
+ case NETDEV_BOND_XMIT_HASH_POLICY_LAYER23:
+ return BOND_XMIT_POLICY_LAYER23;
+ case NETDEV_BOND_XMIT_HASH_POLICY_ENCAP23:
+ return BOND_XMIT_POLICY_ENCAP23;
+ case NETDEV_BOND_XMIT_HASH_POLICY_ENCAP34:
+ return BOND_XMIT_POLICY_ENCAP34;
+ default:
+ return (uint8_t) -1;
+ }
+}
+
+static int netdev_bond_fill_message_create(NetDev *netdev, Link *link, sd_netlink_message *m) {
+ Bond *b;
+ ArpIpTarget *target = NULL;
+ int r, i = 0;
+
+ assert(netdev);
+ assert(!link);
+ assert(m);
+
+ b = BOND(netdev);
+
+ assert(b);
+
+ if (b->mode != _NETDEV_BOND_MODE_INVALID) {
+ r = sd_netlink_message_append_u8(m, IFLA_BOND_MODE,
+ bond_mode_to_kernel(b->mode));
+ if (r < 0)
+ return log_netdev_error_errno(netdev, r, "Could not append IFLA_BOND_MODE attribute: %m");
+ }
+
+ if (b->xmit_hash_policy != _NETDEV_BOND_XMIT_HASH_POLICY_INVALID) {
+ r = sd_netlink_message_append_u8(m, IFLA_BOND_XMIT_HASH_POLICY,
+ bond_xmit_hash_policy_to_kernel(b->xmit_hash_policy));
+ if (r < 0)
+ return log_netdev_error_errno(netdev, r, "Could not append IFLA_BOND_XMIT_HASH_POLICY attribute: %m");
+ }
+
+ 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 log_netdev_error_errno(netdev, r, "Could not append IFLA_BOND_AD_LACP_RATE attribute: %m");
+ }
+
+ if (b->miimon != 0) {
+ r = sd_netlink_message_append_u32(m, IFLA_BOND_MIIMON, b->miimon / USEC_PER_MSEC);
+ if (r < 0)
+ log_netdev_error_errno(netdev, r, "Could not append IFLA_BOND_BOND_MIIMON attribute: %m");
+ }
+
+ if (b->downdelay != 0) {
+ r = sd_netlink_message_append_u32(m, IFLA_BOND_DOWNDELAY, b->downdelay / USEC_PER_MSEC);
+ if (r < 0)
+ return log_netdev_error_errno(netdev, r, "Could not append IFLA_BOND_DOWNDELAY attribute: %m");
+ }
+
+ if (b->updelay != 0) {
+ r = sd_netlink_message_append_u32(m, IFLA_BOND_UPDELAY, b->updelay / USEC_PER_MSEC);
+ if (r < 0)
+ return log_netdev_error_errno(netdev, r, "Could not append IFLA_BOND_UPDELAY attribute: %m");
+ }
+
+ 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 log_netdev_error_errno(netdev, r, "Could not append IFLA_BOND_ARP_INTERVAL attribute: %m");
+
+ 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 log_netdev_error_errno(netdev, r, "Could not append IFLA_BOND_LP_INTERVAL attribute: %m");
+ }
+ }
+
+ 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 log_netdev_error_errno(netdev, r, "Could not append IFLA_BOND_AD_SELECT attribute: %m");
+ }
+
+ 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 log_netdev_error_errno(netdev, r, "Could not append IFLA_BOND_FAIL_OVER_MAC attribute: %m");
+ }
+
+ 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 log_netdev_error_errno(netdev, r, "Could not append IFLA_BOND_ARP_VALIDATE attribute: %m");
+ }
+
+ 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 log_netdev_error_errno(netdev, r, "Could not append IFLA_BOND_ARP_ALL_TARGETS attribute: %m");
+ }
+
+ 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 log_netdev_error_errno(netdev, r, "Could not append IFLA_BOND_PRIMARY_RESELECT attribute: %m");
+ }
+
+ 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 log_netdev_error_errno(netdev, r, "Could not append IFLA_BOND_RESEND_IGMP attribute: %m");
+ }
+
+ 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 log_netdev_error_errno(netdev, r, "Could not append IFLA_BOND_PACKETS_PER_SLAVE attribute: %m");
+ }
+
+ 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 log_netdev_error_errno(netdev, r, "Could not append IFLA_BOND_NUM_PEER_NOTIF attribute: %m");
+ }
+
+ if (b->min_links != 0) {
+ r = sd_netlink_message_append_u32(m, IFLA_BOND_MIN_LINKS, b->min_links);
+ if (r < 0)
+ return log_netdev_error_errno(netdev, r, "Could not append IFLA_BOND_MIN_LINKS attribute: %m");
+ }
+
+ r = sd_netlink_message_append_u8(m, IFLA_BOND_ALL_SLAVES_ACTIVE, b->all_slaves_active);
+ if (r < 0)
+ return log_netdev_error_errno(netdev, r, "Could not append IFLA_BOND_ALL_SLAVES_ACTIVE attribute: %m");
+
+ if (b->arp_interval > 0) {
+ if (b->n_arp_ip_targets > 0) {
+
+ r = sd_netlink_message_open_container(m, IFLA_BOND_ARP_IP_TARGET);
+ if (r < 0)
+ return log_netdev_error_errno(netdev, r, "Could not open contaniner IFLA_BOND_ARP_IP_TARGET : %m");
+
+ LIST_FOREACH(arp_ip_target, target, b->arp_ip_targets) {
+ r = sd_netlink_message_append_u32(m, i++, target->ip.in.s_addr);
+ if (r < 0)
+ return log_netdev_error_errno(netdev, r, "Could not append IFLA_BOND_ARP_ALL_TARGETS attribute: %m");
+ }
+
+ r = sd_netlink_message_close_container(m);
+ if (r < 0)
+ return log_netdev_error_errno(netdev, r, "Could not close contaniner IFLA_BOND_ARP_IP_TARGET : %m");
+ }
+ }
+
+ 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) {
+ Bond *b = userdata;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ for (;;) {
+ _cleanup_free_ ArpIpTarget *buffer = NULL;
+ _cleanup_free_ char *n = NULL;
+ int f;
+
+ r = extract_first_word(&rvalue, &n, NULL, 0);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse Bond ARP ip target address, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+
+ if (r == 0)
+ break;
+
+ buffer = new0(ArpIpTarget, 1);
+ if (!buffer)
+ return -ENOMEM;
+
+ r = in_addr_from_string_auto(n, &f, &buffer->ip);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r, "Bond ARP ip target address is invalid, ignoring assignment: %s", n);
+ return 0;
+ }
+
+ if (f != AF_INET) {
+ log_syntax(unit, LOG_ERR, filename, line, 0, "Bond ARP ip target address is invalid, ignoring assignment: %s", n);
+ return 0;
+ }
+
+ LIST_PREPEND(arp_ip_target, b->arp_ip_targets, buffer);
+ b->n_arp_ip_targets++;
+
+ buffer = NULL;
+ }
+
+ if (b->n_arp_ip_targets > NETDEV_BOND_ARP_TARGETS_MAX)
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "More than the maximum number of kernel-supported ARP ip targets specified: %d > %d",
+ b->n_arp_ip_targets, NETDEV_BOND_ARP_TARGETS_MAX);
+
+ return 0;
+}
+
+static void bond_done(NetDev *netdev) {
+ ArpIpTarget *t = NULL, *n = NULL;
+ Bond *b;
+
+ assert(netdev);
+
+ b = BOND(netdev);
+
+ assert(b);
+
+ LIST_FOREACH_SAFE(arp_ip_target, t, n, b->arp_ip_targets)
+ free(t);
+
+ b->arp_ip_targets = NULL;
+}
+
+static void bond_init(NetDev *netdev) {
+ Bond *b;
+
+ assert(netdev);
+
+ b = BOND(netdev);
+
+ assert(b);
+
+ 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->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;
+
+ LIST_HEAD_INIT(b->arp_ip_targets);
+ b->n_arp_ip_targets = 0;
+}
+
+const NetDevVTable bond_vtable = {
+ .object_size = sizeof(Bond),
+ .init = bond_init,
+ .done = bond_done,
+ .sections = "Match\0NetDev\0Bond\0",
+ .fill_message_create = netdev_bond_fill_message_create,
+ .create_type = NETDEV_CREATE_MASTER,
+};