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Thu, 4 Sep 2025 22:19:59 +0000 (GMT) From: David Wilder To: netdev@vger.kernel.org Cc: jv@jvosburgh.net, wilder@us.ibm.com, pradeeps@linux.vnet.ibm.com, pradeep@us.ibm.com, i.maximets@ovn.org, amorenoz@redhat.com, haliu@redhat.com, stephen@networkplumber.org, horms@kernel.org Subject: [PATCH net-next v10 1/7] bonding: Adding struct bond_arp_target Date: Thu, 4 Sep 2025 15:18:19 -0700 Message-ID: <20250904221956.779098-2-wilder@us.ibm.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250904221956.779098-1-wilder@us.ibm.com> References: <20250904221956.779098-1-wilder@us.ibm.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=PeP/hjhd c=1 sm=1 tr=0 ts=68ba1092 cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=yJojWOMRYYMA:10 a=VnNF1IyMAAAA:8 a=Al8d5LBM4mRIXYHQ2n4A:9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODMwMDAzNCBTYWx0ZWRfXy3lwrDYQ1En1 gSM8NHP1CR7gJtwaw3JfBXb7PdvMi3haSfooTQzaPmSczdkxXt+PZelkrzvx8jYl9UrZY92mHiC Vuwv1e5zrkRwf8KQVE0vPOhfSvxNOAEjByq1KCjwdWmRf4dSa51ClZWOjV28xM/qjtJdkv2Jopb tDWRBmzgaYJIzY3Gdpsxi2jlQaupGv/ZpNKnyQgvEB8IlamttXIM5f/XZv05fKmpnssgbl6bRBL 1Aob6oXAj6OxSaOhYy3wq9rINhnOQj26fBFM1WdI1JoeNV0LK+Effmdm/V3+FovfkCgQh6T3P2z ccVXtUAjYcaGabkesRHPrn6DYTsWF33MUM0hAMSWCX+nu84eFpNulNVI6quNEezmrwHiks+XWQM 39YYdSYu X-Proofpoint-GUID: j9pU_mY6axCYJ84jbybIJO-NrYQe6l-4 X-Proofpoint-ORIG-GUID: j9pU_mY6axCYJ84jbybIJO-NrYQe6l-4 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1117,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-09-04_07,2025-09-04_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 priorityscore=1501 malwarescore=0 spamscore=0 adultscore=0 impostorscore=0 bulkscore=0 phishscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508300034 Replacing the definition of bond_params.arp_targets (__be32 arp_targets[]) with: struct bond_arp_target { __be32 target_ip; struct bond_vlan_tag *tags; u32 flags; }; To provide storage for a list of vlan tags for each target. All references to arp_target are change to use the new structure. Signed-off-by: David Wilder --- drivers/net/bonding/bond_main.c | 29 ++++++++++++++++------------- drivers/net/bonding/bond_netlink.c | 4 ++-- drivers/net/bonding/bond_options.c | 18 +++++++++--------- drivers/net/bonding/bond_procfs.c | 4 ++-- drivers/net/bonding/bond_sysfs.c | 4 ++-- include/net/bond_options.h | 20 ++++++++++++++++++++ include/net/bonding.h | 15 +++++---------- 7 files changed, 56 insertions(+), 38 deletions(-) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index f25c2d2c9181..7548119ca0f3 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -3065,26 +3065,29 @@ static void bond_arp_send_all(struct bonding *bond, struct slave *slave) { struct rtable *rt; struct bond_vlan_tag *tags; - __be32 *targets = bond->params.arp_targets, addr; + struct bond_arp_target *targets = bond->params.arp_targets; + __be32 target_ip, addr; int i; - for (i = 0; i < BOND_MAX_ARP_TARGETS && targets[i]; i++) { + for (i = 0; i < BOND_MAX_ARP_TARGETS && targets[i].target_ip; i++) { + target_ip = targets[i].target_ip; + tags = targets[i].tags; + slave_dbg(bond->dev, slave->dev, "%s: target %pI4\n", - __func__, &targets[i]); - tags = NULL; + __func__, &target_ip); /* Find out through which dev should the packet go */ - rt = ip_route_output(dev_net(bond->dev), targets[i], 0, 0, 0, + rt = ip_route_output(dev_net(bond->dev), target_ip, 0, 0, 0, RT_SCOPE_LINK); if (IS_ERR(rt)) { - /* there's no route to target - try to send arp + /* there's no route to target_ip - try to send arp * probe to generate any traffic (arp_validate=0) */ if (bond->params.arp_validate) pr_warn_once("%s: no route to arp_ip_target %pI4 and arp_validate is set\n", bond->dev->name, - &targets[i]); - bond_arp_send(slave, ARPOP_REQUEST, targets[i], + &target_ip); + bond_arp_send(slave, ARPOP_REQUEST, target_ip, 0, tags); continue; } @@ -3102,15 +3105,15 @@ static void bond_arp_send_all(struct bonding *bond, struct slave *slave) /* Not our device - skip */ slave_dbg(bond->dev, slave->dev, "no path to arp_ip_target %pI4 via rt.dev %s\n", - &targets[i], rt->dst.dev ? rt->dst.dev->name : "NULL"); + &target_ip, rt->dst.dev ? rt->dst.dev->name : "NULL"); ip_rt_put(rt); continue; found: - addr = bond_confirm_addr(rt->dst.dev, targets[i], 0); + addr = bond_confirm_addr(rt->dst.dev, target_ip, 0); ip_rt_put(rt); - bond_arp_send(slave, ARPOP_REQUEST, targets[i], addr, tags); + bond_arp_send(slave, ARPOP_REQUEST, target_ip, addr, tags); kfree(tags); } } @@ -6066,7 +6069,7 @@ static int __init bond_check_params(struct bond_params *params) int arp_all_targets_value = 0; u16 ad_actor_sys_prio = 0; u16 ad_user_port_key = 0; - __be32 arp_target[BOND_MAX_ARP_TARGETS] = { 0 }; + struct bond_arp_target arp_target[BOND_MAX_ARP_TARGETS] = { 0 }; int arp_ip_count; int bond_mode = BOND_MODE_ROUNDROBIN; int xmit_hashtype = BOND_XMIT_POLICY_LAYER2; @@ -6260,7 +6263,7 @@ static int __init bond_check_params(struct bond_params *params) arp_interval = 0; } else { if (bond_get_targets_ip(arp_target, ip) == -1) - arp_target[arp_ip_count++] = ip; + arp_target[arp_ip_count++].target_ip = ip; else pr_warn("Warning: duplicate address %pI4 in arp_ip_target, skipping\n", &ip); diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c index e573b34a1bbc..a5887254ff23 100644 --- a/drivers/net/bonding/bond_netlink.c +++ b/drivers/net/bonding/bond_netlink.c @@ -698,8 +698,8 @@ static int bond_fill_info(struct sk_buff *skb, targets_added = 0; for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) { - if (bond->params.arp_targets[i]) { - if (nla_put_be32(skb, i, bond->params.arp_targets[i])) + if (bond->params.arp_targets[i].target_ip) { + if (nla_put_be32(skb, i, bond->params.arp_targets[i].target_ip)) goto nla_put_failure; targets_added = 1; } diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c index c0a5eb8766b5..cf4cb301a738 100644 --- a/drivers/net/bonding/bond_options.c +++ b/drivers/net/bonding/bond_options.c @@ -1108,7 +1108,7 @@ static int bond_option_arp_interval_set(struct bonding *bond, netdev_dbg(bond->dev, "ARP monitoring cannot be used with MII monitoring. Disabling MII monitoring\n"); bond->params.miimon = 0; } - if (!bond->params.arp_targets[0]) + if (!bond->params.arp_targets[0].target_ip) netdev_dbg(bond->dev, "ARP monitoring has been set up, but no ARP targets have been specified\n"); } if (bond->dev->flags & IFF_UP) { @@ -1136,20 +1136,20 @@ static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot, __be32 target, unsigned long last_rx) { - __be32 *targets = bond->params.arp_targets; + struct bond_arp_target *targets = bond->params.arp_targets; struct list_head *iter; struct slave *slave; if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) { bond_for_each_slave(bond, slave, iter) slave->target_last_arp_rx[slot] = last_rx; - targets[slot] = target; + targets[slot].target_ip = target; } } static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target) { - __be32 *targets = bond->params.arp_targets; + struct bond_arp_target *targets = bond->params.arp_targets; int ind; if (!bond_is_ip_target_ok(target)) { @@ -1184,7 +1184,7 @@ static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target) static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target) { - __be32 *targets = bond->params.arp_targets; + struct bond_arp_target *targets = bond->params.arp_targets; struct list_head *iter; struct slave *slave; unsigned long *targets_rx; @@ -1203,20 +1203,20 @@ static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target) return -EINVAL; } - if (ind == 0 && !targets[1] && bond->params.arp_interval) + if (ind == 0 && !targets[1].target_ip && bond->params.arp_interval) netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n"); netdev_dbg(bond->dev, "Removing ARP target %pI4\n", &target); bond_for_each_slave(bond, slave, iter) { targets_rx = slave->target_last_arp_rx; - for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++) + for (i = ind; (i < BOND_MAX_ARP_TARGETS - 1) && targets[i + 1].target_ip; i++) targets_rx[i] = targets_rx[i+1]; targets_rx[i] = 0; } - for (i = ind; (i < BOND_MAX_ARP_TARGETS-1) && targets[i+1]; i++) + for (i = ind; (i < BOND_MAX_ARP_TARGETS - 1) && targets[i + 1].target_ip; i++) targets[i] = targets[i+1]; - targets[i] = 0; + targets[i].target_ip = 0; return 0; } diff --git a/drivers/net/bonding/bond_procfs.c b/drivers/net/bonding/bond_procfs.c index 7edf72ec816a..94e6fd7041ee 100644 --- a/drivers/net/bonding/bond_procfs.c +++ b/drivers/net/bonding/bond_procfs.c @@ -121,11 +121,11 @@ static void bond_info_show_master(struct seq_file *seq) seq_printf(seq, "ARP IP target/s (n.n.n.n form):"); for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) { - if (!bond->params.arp_targets[i]) + if (!bond->params.arp_targets[i].target_ip) break; if (printed) seq_printf(seq, ","); - seq_printf(seq, " %pI4", &bond->params.arp_targets[i]); + seq_printf(seq, " %pI4", &bond->params.arp_targets[i].target_ip); printed = 1; } seq_printf(seq, "\n"); diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c index 9a75ad3181ab..7114bd4d7735 100644 --- a/drivers/net/bonding/bond_sysfs.c +++ b/drivers/net/bonding/bond_sysfs.c @@ -290,9 +290,9 @@ static ssize_t bonding_show_arp_targets(struct device *d, int i, res = 0; for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) { - if (bond->params.arp_targets[i]) + if (bond->params.arp_targets[i].target_ip) res += sysfs_emit_at(buf, res, "%pI4 ", - &bond->params.arp_targets[i]); + &bond->params.arp_targets[i].target_ip); } if (res) buf[res-1] = '\n'; /* eat the leftover space */ diff --git a/include/net/bond_options.h b/include/net/bond_options.h index 022b122a9fb6..b7f275bc33a1 100644 --- a/include/net/bond_options.h +++ b/include/net/bond_options.h @@ -120,6 +120,26 @@ struct bond_option { int (*set)(struct bonding *bond, const struct bond_opt_value *val); }; +struct bond_vlan_tag { + __be16 vlan_proto; + unsigned short vlan_id; +}; + +/* Value type flags: + * BOND_TARGET_DONTFREE - never free the tags + * BOND_TARGET_USERTAGS - tags have been supplied by the user + */ +enum { + BOND_TARGET_DONTFREE = BIT(0), + BOND_TARGET_USERTAGS = BIT(1), +}; + +struct bond_arp_target { + __be32 target_ip; + struct bond_vlan_tag *tags; + u32 flags; +}; + int __bond_opt_set(struct bonding *bond, unsigned int option, struct bond_opt_value *val, struct nlattr *bad_attr, struct netlink_ext_ack *extack); diff --git a/include/net/bonding.h b/include/net/bonding.h index 37335f62f579..a0eae209315f 100644 --- a/include/net/bonding.h +++ b/include/net/bonding.h @@ -136,7 +136,7 @@ struct bond_params { int ad_select; char primary[IFNAMSIZ]; int primary_reselect; - __be32 arp_targets[BOND_MAX_ARP_TARGETS]; + struct bond_arp_target arp_targets[BOND_MAX_ARP_TARGETS]; int tx_queues; int all_slaves_active; int resend_igmp; @@ -276,11 +276,6 @@ struct bonding { void bond_queue_slave_event(struct slave *slave); void bond_lower_state_changed(struct slave *slave); -struct bond_vlan_tag { - __be16 vlan_proto; - unsigned short vlan_id; -}; - /* * Returns NULL if the net_device does not belong to any of the bond's slaves * @@ -524,7 +519,7 @@ static inline unsigned long slave_oldest_target_arp_rx(struct bonding *bond, int i = 1; unsigned long ret = slave->target_last_arp_rx[0]; - for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i]; i++) + for (; (i < BOND_MAX_ARP_TARGETS) && bond->params.arp_targets[i].target_ip; i++) if (time_before(slave->target_last_arp_rx[i], ret)) ret = slave->target_last_arp_rx[i]; @@ -762,14 +757,14 @@ static inline bool bond_slave_has_mac_rcu(struct bonding *bond, const u8 *mac) /* Check if the ip is present in arp ip list, or first free slot if ip == 0 * Returns -1 if not found, index if found */ -static inline int bond_get_targets_ip(__be32 *targets, __be32 ip) +static inline int bond_get_targets_ip(struct bond_arp_target *targets, __be32 ip) { int i; for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) - if (targets[i] == ip) + if (targets[i].target_ip == ip) return i; - else if (targets[i] == 0) + else if (targets[i].target_ip == 0) break; return -1; -- 2.50.1