summaryrefslogtreecommitdiff
path: root/drivers/net/bonding
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/bonding')
-rw-r--r--drivers/net/bonding/bond_main.c139
-rw-r--r--drivers/net/bonding/bond_options.c8
2 files changed, 145 insertions, 2 deletions
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index f88cb097b022..5ad43aaf76e5 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -79,6 +79,7 @@
#include <net/pkt_sched.h>
#include <linux/rculist.h>
#include <net/flow_dissector.h>
+#include <net/xfrm.h>
#include <net/bonding.h>
#include <net/bond_3ad.h>
#include <net/bond_alb.h>
@@ -278,8 +279,6 @@ const char *bond_mode_name(int mode)
return names[mode];
}
-/*---------------------------------- VLAN -----------------------------------*/
-
/**
* bond_dev_queue_xmit - Prepare skb for xmit.
*
@@ -302,6 +301,8 @@ netdev_tx_t bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb,
return dev_queue_xmit(skb);
}
+/*---------------------------------- VLAN -----------------------------------*/
+
/* In the following 2 functions, bond_vlan_rx_add_vid and bond_vlan_rx_kill_vid,
* We don't protect the slave list iteration with a lock because:
* a. This operation is performed in IOCTL context,
@@ -372,6 +373,98 @@ static int bond_vlan_rx_kill_vid(struct net_device *bond_dev,
return 0;
}
+/*---------------------------------- XFRM -----------------------------------*/
+
+#ifdef CONFIG_XFRM_OFFLOAD
+/**
+ * bond_ipsec_add_sa - program device with a security association
+ * @xs: pointer to transformer state struct
+ **/
+static int bond_ipsec_add_sa(struct xfrm_state *xs)
+{
+ struct net_device *bond_dev = xs->xso.dev;
+ struct bonding *bond;
+ struct slave *slave;
+
+ if (!bond_dev)
+ return -EINVAL;
+
+ bond = netdev_priv(bond_dev);
+ slave = rcu_dereference(bond->curr_active_slave);
+ xs->xso.real_dev = slave->dev;
+ bond->xs = xs;
+
+ if (!(slave->dev->xfrmdev_ops
+ && slave->dev->xfrmdev_ops->xdo_dev_state_add)) {
+ slave_warn(bond_dev, slave->dev, "Slave does not support ipsec offload\n");
+ return -EINVAL;
+ }
+
+ return slave->dev->xfrmdev_ops->xdo_dev_state_add(xs);
+}
+
+/**
+ * bond_ipsec_del_sa - clear out this specific SA
+ * @xs: pointer to transformer state struct
+ **/
+static void bond_ipsec_del_sa(struct xfrm_state *xs)
+{
+ struct net_device *bond_dev = xs->xso.dev;
+ struct bonding *bond;
+ struct slave *slave;
+
+ if (!bond_dev)
+ return;
+
+ bond = netdev_priv(bond_dev);
+ slave = rcu_dereference(bond->curr_active_slave);
+
+ if (!slave)
+ return;
+
+ xs->xso.real_dev = slave->dev;
+
+ if (!(slave->dev->xfrmdev_ops
+ && slave->dev->xfrmdev_ops->xdo_dev_state_delete)) {
+ slave_warn(bond_dev, slave->dev, "%s: no slave xdo_dev_state_delete\n", __func__);
+ return;
+ }
+
+ slave->dev->xfrmdev_ops->xdo_dev_state_delete(xs);
+}
+
+/**
+ * bond_ipsec_offload_ok - can this packet use the xfrm hw offload
+ * @skb: current data packet
+ * @xs: pointer to transformer state struct
+ **/
+static bool bond_ipsec_offload_ok(struct sk_buff *skb, struct xfrm_state *xs)
+{
+ struct net_device *bond_dev = xs->xso.dev;
+ struct bonding *bond = netdev_priv(bond_dev);
+ struct slave *curr_active = rcu_dereference(bond->curr_active_slave);
+ struct net_device *slave_dev = curr_active->dev;
+
+ if (BOND_MODE(bond) != BOND_MODE_ACTIVEBACKUP)
+ return true;
+
+ if (!(slave_dev->xfrmdev_ops
+ && slave_dev->xfrmdev_ops->xdo_dev_offload_ok)) {
+ slave_warn(bond_dev, slave_dev, "%s: no slave xdo_dev_offload_ok\n", __func__);
+ return false;
+ }
+
+ xs->xso.real_dev = slave_dev;
+ return slave_dev->xfrmdev_ops->xdo_dev_offload_ok(skb, xs);
+}
+
+static const struct xfrmdev_ops bond_xfrmdev_ops = {
+ .xdo_dev_state_add = bond_ipsec_add_sa,
+ .xdo_dev_state_delete = bond_ipsec_del_sa,
+ .xdo_dev_offload_ok = bond_ipsec_offload_ok,
+};
+#endif /* CONFIG_XFRM_OFFLOAD */
+
/*------------------------------- Link status -------------------------------*/
/* Set the carrier state for the master according to the state of its
@@ -878,6 +971,11 @@ void bond_change_active_slave(struct bonding *bond, struct slave *new_active)
if (old_active == new_active)
return;
+#ifdef CONFIG_XFRM_OFFLOAD
+ if (old_active && bond->xs)
+ bond_ipsec_del_sa(bond->xs);
+#endif /* CONFIG_XFRM_OFFLOAD */
+
if (new_active) {
new_active->last_link_up = jiffies;
@@ -950,6 +1048,13 @@ void bond_change_active_slave(struct bonding *bond, struct slave *new_active)
}
}
+#ifdef CONFIG_XFRM_OFFLOAD
+ if (new_active && bond->xs) {
+ xfrm_dev_state_flush(dev_net(bond->dev), bond->dev, true);
+ bond_ipsec_add_sa(bond->xs);
+ }
+#endif /* CONFIG_XFRM_OFFLOAD */
+
/* resend IGMP joins since active slave has changed or
* all were sent on curr_active_slave.
* resend only if bond is brought up with the affected
@@ -1130,12 +1235,16 @@ static netdev_features_t bond_fix_features(struct net_device *dev,
#define BOND_MPLS_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \
NETIF_F_ALL_TSO)
+
static void bond_compute_features(struct bonding *bond)
{
unsigned int dst_release_flag = IFF_XMIT_DST_RELEASE |
IFF_XMIT_DST_RELEASE_PERM;
netdev_features_t vlan_features = BOND_VLAN_FEATURES;
netdev_features_t enc_features = BOND_ENC_FEATURES;
+#ifdef CONFIG_XFRM_OFFLOAD
+ netdev_features_t xfrm_features = BOND_XFRM_FEATURES;
+#endif /* CONFIG_XFRM_OFFLOAD */
netdev_features_t mpls_features = BOND_MPLS_FEATURES;
struct net_device *bond_dev = bond->dev;
struct list_head *iter;
@@ -1157,6 +1266,12 @@ static void bond_compute_features(struct bonding *bond)
slave->dev->hw_enc_features,
BOND_ENC_FEATURES);
+#ifdef CONFIG_XFRM_OFFLOAD
+ xfrm_features = netdev_increment_features(xfrm_features,
+ slave->dev->hw_enc_features,
+ BOND_XFRM_FEATURES);
+#endif /* CONFIG_XFRM_OFFLOAD */
+
mpls_features = netdev_increment_features(mpls_features,
slave->dev->mpls_features,
BOND_MPLS_FEATURES);
@@ -1176,6 +1291,9 @@ done:
NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_STAG_TX |
NETIF_F_GSO_UDP_L4;
+#ifdef CONFIG_XFRM_OFFLOAD
+ bond_dev->hw_enc_features |= xfrm_features;
+#endif /* CONFIG_XFRM_OFFLOAD */
bond_dev->mpls_features = mpls_features;
bond_dev->gso_max_segs = gso_max_segs;
netif_set_gso_max_size(bond_dev, gso_max_size);
@@ -1464,6 +1582,9 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev,
slave_dbg(bond_dev, slave_dev, "is !NETIF_F_VLAN_CHALLENGED\n");
}
+ if (slave_dev->features & NETIF_F_HW_ESP)
+ slave_dbg(bond_dev, slave_dev, "is esp-hw-offload capable\n");
+
/* Old ifenslave binaries are no longer supported. These can
* be identified with moderate accuracy by the state of the slave:
* the current ifenslave will set the interface down prior to
@@ -4540,6 +4661,12 @@ void bond_setup(struct net_device *bond_dev)
bond_dev->priv_flags |= IFF_BONDING | IFF_UNICAST_FLT | IFF_NO_QUEUE;
bond_dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
+#ifdef CONFIG_XFRM_OFFLOAD
+ /* set up xfrm device ops (only supported in active-backup right now) */
+ bond_dev->xfrmdev_ops = &bond_xfrmdev_ops;
+ bond->xs = NULL;
+#endif /* CONFIG_XFRM_OFFLOAD */
+
/* don't acquire bond device's netif_tx_lock when transmitting */
bond_dev->features |= NETIF_F_LLTX;
@@ -4558,8 +4685,16 @@ void bond_setup(struct net_device *bond_dev)
NETIF_F_HW_VLAN_CTAG_FILTER;
bond_dev->hw_features |= NETIF_F_GSO_ENCAP_ALL | NETIF_F_GSO_UDP_L4;
+#ifdef CONFIG_XFRM_OFFLOAD
+ bond_dev->hw_features |= BOND_XFRM_FEATURES;
+#endif /* CONFIG_XFRM_OFFLOAD */
bond_dev->features |= bond_dev->hw_features;
bond_dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX;
+#ifdef CONFIG_XFRM_OFFLOAD
+ /* Disable XFRM features if this isn't an active-backup config */
+ if (BOND_MODE(bond) != BOND_MODE_ACTIVEBACKUP)
+ bond_dev->features &= ~BOND_XFRM_FEATURES;
+#endif /* CONFIG_XFRM_OFFLOAD */
}
/* Destroy a bonding device.
diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c
index ddb3916d3506..9abfaae1c6f7 100644
--- a/drivers/net/bonding/bond_options.c
+++ b/drivers/net/bonding/bond_options.c
@@ -767,6 +767,14 @@ static int bond_option_mode_set(struct bonding *bond,
if (newval->value == BOND_MODE_ALB)
bond->params.tlb_dynamic_lb = 1;
+#ifdef CONFIG_XFRM_OFFLOAD
+ if (newval->value == BOND_MODE_ACTIVEBACKUP)
+ bond->dev->wanted_features |= BOND_XFRM_FEATURES;
+ else
+ bond->dev->wanted_features &= ~BOND_XFRM_FEATURES;
+ netdev_change_features(bond->dev);
+#endif /* CONFIG_XFRM_OFFLOAD */
+
/* don't cache arp_validate between modes */
bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
bond->params.mode = newval->value;
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-22 06:28:32 +0300