diff options
author | Mark Brown <broonie@linaro.org> | 2013-11-21 10:16:13 +0000 |
---|---|---|
committer | Mark Brown <broonie@linaro.org> | 2013-11-21 10:16:13 +0000 |
commit | d768ff6691aaa3f2009df4a701f2c42e964d901e (patch) | |
tree | 175d12d8fce10b3510d37ebe5cb0a13884ae866a /drivers/net | |
parent | 54a3a4d441e9eaceb86989f0b466e77815ab6129 (diff) | |
parent | a4c01ca3b76b28c41fb3b07a1eb1389dae24bf4a (diff) |
Merge tag 'v3.10.20' into linux-linaro-lsk
This is the 3.10.20 stable release
Diffstat (limited to 'drivers/net')
-rw-r--r-- | drivers/net/ethernet/chelsio/cxgb3/sge.c | 3 | ||||
-rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/cmd.c | 2 | ||||
-rw-r--r-- | drivers/net/virtio_net.c | 13 | ||||
-rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-7000.c | 42 | ||||
-rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-config.h | 6 | ||||
-rw-r--r-- | drivers/net/wireless/iwlwifi/pcie/drv.c | 79 | ||||
-rw-r--r-- | drivers/net/xen-netback/common.h | 1 | ||||
-rw-r--r-- | drivers/net/xen-netback/interface.c | 3 | ||||
-rw-r--r-- | drivers/net/xen-netback/netback.c | 10 | ||||
-rw-r--r-- | drivers/net/xen-netback/xenbus.c | 153 |
10 files changed, 258 insertions, 54 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb3/sge.c b/drivers/net/ethernet/chelsio/cxgb3/sge.c index f12e6b85a65..f057a189d97 100644 --- a/drivers/net/ethernet/chelsio/cxgb3/sge.c +++ b/drivers/net/ethernet/chelsio/cxgb3/sge.c @@ -1600,7 +1600,8 @@ static void write_ofld_wr(struct adapter *adap, struct sk_buff *skb, flits = skb_transport_offset(skb) / 8; sgp = ndesc == 1 ? (struct sg_ent *)&d->flit[flits] : sgl; sgl_flits = make_sgl(skb, sgp, skb_transport_header(skb), - skb->tail - skb->transport_header, + skb_tail_pointer(skb) - + skb_transport_header(skb), adap->pdev); if (need_skb_unmap()) { setup_deferred_unmapping(skb, adap->pdev, sgp, sgl_flits); diff --git a/drivers/net/ethernet/mellanox/mlx4/cmd.c b/drivers/net/ethernet/mellanox/mlx4/cmd.c index 0e572a52715..28d706bd12e 100644 --- a/drivers/net/ethernet/mellanox/mlx4/cmd.c +++ b/drivers/net/ethernet/mellanox/mlx4/cmd.c @@ -1544,7 +1544,7 @@ static void mlx4_master_deactivate_admin_state(struct mlx4_priv *priv, int slave vp_oper->vlan_idx = NO_INDX; } if (NO_INDX != vp_oper->mac_idx) { - __mlx4_unregister_mac(&priv->dev, port, vp_oper->mac_idx); + __mlx4_unregister_mac(&priv->dev, port, vp_oper->state.mac); vp_oper->mac_idx = NO_INDX; } } diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 1d01534c202..64cf7024704 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -1096,11 +1096,6 @@ static int virtnet_cpu_callback(struct notifier_block *nfb, { struct virtnet_info *vi = container_of(nfb, struct virtnet_info, nb); - mutex_lock(&vi->config_lock); - - if (!vi->config_enable) - goto done; - switch(action & ~CPU_TASKS_FROZEN) { case CPU_ONLINE: case CPU_DOWN_FAILED: @@ -1114,8 +1109,6 @@ static int virtnet_cpu_callback(struct notifier_block *nfb, break; } -done: - mutex_unlock(&vi->config_lock); return NOTIFY_OK; } @@ -1672,6 +1665,8 @@ static int virtnet_freeze(struct virtio_device *vdev) struct virtnet_info *vi = vdev->priv; int i; + unregister_hotcpu_notifier(&vi->nb); + /* Prevent config work handler from accessing the device */ mutex_lock(&vi->config_lock); vi->config_enable = false; @@ -1720,6 +1715,10 @@ static int virtnet_restore(struct virtio_device *vdev) virtnet_set_queues(vi, vi->curr_queue_pairs); rtnl_unlock(); + err = register_hotcpu_notifier(&vi->nb); + if (err) + return err; + return 0; } #endif diff --git a/drivers/net/wireless/iwlwifi/iwl-7000.c b/drivers/net/wireless/iwlwifi/iwl-7000.c index dc94d44d95c..822443c5a3b 100644 --- a/drivers/net/wireless/iwlwifi/iwl-7000.c +++ b/drivers/net/wireless/iwlwifi/iwl-7000.c @@ -125,7 +125,7 @@ static const struct iwl_ht_params iwl7000_ht_params = { const struct iwl_cfg iwl7260_2ac_cfg = { - .name = "Intel(R) Dual Band Wireless AC7260", + .name = "Intel(R) Dual Band Wireless AC 7260", .fw_name_pre = IWL7260_FW_PRE, IWL_DEVICE_7000, .ht_params = &iwl7000_ht_params, @@ -133,8 +133,44 @@ const struct iwl_cfg iwl7260_2ac_cfg = { .nvm_calib_ver = IWL7260_TX_POWER_VERSION, }; -const struct iwl_cfg iwl3160_ac_cfg = { - .name = "Intel(R) Dual Band Wireless AC3160", +const struct iwl_cfg iwl7260_2n_cfg = { + .name = "Intel(R) Dual Band Wireless N 7260", + .fw_name_pre = IWL7260_FW_PRE, + IWL_DEVICE_7000, + .ht_params = &iwl7000_ht_params, + .nvm_ver = IWL7260_NVM_VERSION, + .nvm_calib_ver = IWL7260_TX_POWER_VERSION, +}; + +const struct iwl_cfg iwl7260_n_cfg = { + .name = "Intel(R) Wireless N 7260", + .fw_name_pre = IWL7260_FW_PRE, + IWL_DEVICE_7000, + .ht_params = &iwl7000_ht_params, + .nvm_ver = IWL7260_NVM_VERSION, + .nvm_calib_ver = IWL7260_TX_POWER_VERSION, +}; + +const struct iwl_cfg iwl3160_2ac_cfg = { + .name = "Intel(R) Dual Band Wireless AC 3160", + .fw_name_pre = IWL3160_FW_PRE, + IWL_DEVICE_7000, + .ht_params = &iwl7000_ht_params, + .nvm_ver = IWL3160_NVM_VERSION, + .nvm_calib_ver = IWL3160_TX_POWER_VERSION, +}; + +const struct iwl_cfg iwl3160_2n_cfg = { + .name = "Intel(R) Dual Band Wireless N 3160", + .fw_name_pre = IWL3160_FW_PRE, + IWL_DEVICE_7000, + .ht_params = &iwl7000_ht_params, + .nvm_ver = IWL3160_NVM_VERSION, + .nvm_calib_ver = IWL3160_TX_POWER_VERSION, +}; + +const struct iwl_cfg iwl3160_n_cfg = { + .name = "Intel(R) Wireless N 3160", .fw_name_pre = IWL3160_FW_PRE, IWL_DEVICE_7000, .ht_params = &iwl7000_ht_params, diff --git a/drivers/net/wireless/iwlwifi/iwl-config.h b/drivers/net/wireless/iwlwifi/iwl-config.h index c67e29655b2..44e3370ce34 100644 --- a/drivers/net/wireless/iwlwifi/iwl-config.h +++ b/drivers/net/wireless/iwlwifi/iwl-config.h @@ -321,6 +321,10 @@ extern const struct iwl_cfg iwl105_bgn_cfg; extern const struct iwl_cfg iwl105_bgn_d_cfg; extern const struct iwl_cfg iwl135_bgn_cfg; extern const struct iwl_cfg iwl7260_2ac_cfg; -extern const struct iwl_cfg iwl3160_ac_cfg; +extern const struct iwl_cfg iwl7260_2n_cfg; +extern const struct iwl_cfg iwl7260_n_cfg; +extern const struct iwl_cfg iwl3160_2ac_cfg; +extern const struct iwl_cfg iwl3160_2n_cfg; +extern const struct iwl_cfg iwl3160_n_cfg; #endif /* __IWL_CONFIG_H__ */ diff --git a/drivers/net/wireless/iwlwifi/pcie/drv.c b/drivers/net/wireless/iwlwifi/pcie/drv.c index b7858a59597..b53e5c3f403 100644 --- a/drivers/net/wireless/iwlwifi/pcie/drv.c +++ b/drivers/net/wireless/iwlwifi/pcie/drv.c @@ -267,10 +267,83 @@ static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = { /* 7000 Series */ {IWL_PCI_DEVICE(0x08B1, 0x4070, iwl7260_2ac_cfg)}, - {IWL_PCI_DEVICE(0x08B1, 0x4062, iwl7260_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0x4072, iwl7260_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0x4170, iwl7260_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0x4060, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0x406A, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0x4160, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0x4062, iwl7260_n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0x4162, iwl7260_n_cfg)}, + {IWL_PCI_DEVICE(0x08B2, 0x4270, iwl7260_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B2, 0x4272, iwl7260_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B2, 0x4260, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B2, 0x426A, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B2, 0x4262, iwl7260_n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0x4470, iwl7260_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0x4472, iwl7260_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0x4460, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0x446A, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0x4462, iwl7260_n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0x4870, iwl7260_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0x486E, iwl7260_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0x4570, iwl7260_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0x4560, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B2, 0x4370, iwl7260_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B2, 0x4360, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0x5070, iwl7260_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0x4020, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0x402A, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B2, 0x4220, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0x4420, iwl7260_2n_cfg)}, {IWL_PCI_DEVICE(0x08B1, 0xC070, iwl7260_2ac_cfg)}, - {IWL_PCI_DEVICE(0x08B3, 0x0070, iwl3160_ac_cfg)}, - {IWL_PCI_DEVICE(0x08B3, 0x8070, iwl3160_ac_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0xC072, iwl7260_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0xC170, iwl7260_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0xC060, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0xC06A, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0xC160, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0xC062, iwl7260_n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0xC162, iwl7260_n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0xC770, iwl7260_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0xC760, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B2, 0xC270, iwl7260_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B2, 0xC272, iwl7260_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B2, 0xC260, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B2, 0xC26A, iwl7260_n_cfg)}, + {IWL_PCI_DEVICE(0x08B2, 0xC262, iwl7260_n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0xC470, iwl7260_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0xC472, iwl7260_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0xC460, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0xC462, iwl7260_n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0xC570, iwl7260_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0xC560, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B2, 0xC370, iwl7260_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0xC360, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0xC020, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0xC02A, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B2, 0xC220, iwl7260_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B1, 0xC420, iwl7260_2n_cfg)}, + +/* 3160 Series */ + {IWL_PCI_DEVICE(0x08B3, 0x0070, iwl3160_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B3, 0x0072, iwl3160_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B3, 0x0170, iwl3160_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B3, 0x0172, iwl3160_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B3, 0x0060, iwl3160_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B3, 0x0062, iwl3160_n_cfg)}, + {IWL_PCI_DEVICE(0x08B4, 0x0270, iwl3160_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B4, 0x0272, iwl3160_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B3, 0x0470, iwl3160_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B3, 0x0472, iwl3160_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B4, 0x0370, iwl3160_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B3, 0x8070, iwl3160_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B3, 0x8072, iwl3160_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B3, 0x8170, iwl3160_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B3, 0x8172, iwl3160_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B3, 0x8060, iwl3160_2n_cfg)}, + {IWL_PCI_DEVICE(0x08B3, 0x8062, iwl3160_n_cfg)}, + {IWL_PCI_DEVICE(0x08B4, 0x8270, iwl3160_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B3, 0x8470, iwl3160_2ac_cfg)}, + {IWL_PCI_DEVICE(0x08B3, 0x8570, iwl3160_2ac_cfg)}, {0} }; diff --git a/drivers/net/xen-netback/common.h b/drivers/net/xen-netback/common.h index 1a285083d24..f2faa779e3f 100644 --- a/drivers/net/xen-netback/common.h +++ b/drivers/net/xen-netback/common.h @@ -88,6 +88,7 @@ struct xenvif { unsigned long credit_usec; unsigned long remaining_credit; struct timer_list credit_timeout; + u64 credit_window_start; /* Statistics */ unsigned long rx_gso_checksum_fixup; diff --git a/drivers/net/xen-netback/interface.c b/drivers/net/xen-netback/interface.c index 3a294c2528d..c4a2eb2cd8a 100644 --- a/drivers/net/xen-netback/interface.c +++ b/drivers/net/xen-netback/interface.c @@ -275,8 +275,7 @@ struct xenvif *xenvif_alloc(struct device *parent, domid_t domid, vif->credit_bytes = vif->remaining_credit = ~0UL; vif->credit_usec = 0UL; init_timer(&vif->credit_timeout); - /* Initialize 'expires' now: it's used to track the credit window. */ - vif->credit_timeout.expires = jiffies; + vif->credit_window_start = get_jiffies_64(); dev->netdev_ops = &xenvif_netdev_ops; dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO; diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c index 0071f211a08..36efb418c26 100644 --- a/drivers/net/xen-netback/netback.c +++ b/drivers/net/xen-netback/netback.c @@ -1423,9 +1423,8 @@ out: static bool tx_credit_exceeded(struct xenvif *vif, unsigned size) { - unsigned long now = jiffies; - unsigned long next_credit = - vif->credit_timeout.expires + + u64 now = get_jiffies_64(); + u64 next_credit = vif->credit_window_start + msecs_to_jiffies(vif->credit_usec / 1000); /* Timer could already be pending in rare cases. */ @@ -1433,8 +1432,8 @@ static bool tx_credit_exceeded(struct xenvif *vif, unsigned size) return true; /* Passed the point where we can replenish credit? */ - if (time_after_eq(now, next_credit)) { - vif->credit_timeout.expires = now; + if (time_after_eq64(now, next_credit)) { + vif->credit_window_start = now; tx_add_credit(vif); } @@ -1446,6 +1445,7 @@ static bool tx_credit_exceeded(struct xenvif *vif, unsigned size) tx_credit_callback; mod_timer(&vif->credit_timeout, next_credit); + vif->credit_window_start = next_credit; return true; } diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c index abe24ff000f..8a9e8750703 100644 --- a/drivers/net/xen-netback/xenbus.c +++ b/drivers/net/xen-netback/xenbus.c @@ -24,6 +24,12 @@ struct backend_info { struct xenbus_device *dev; struct xenvif *vif; + + /* This is the state that will be reflected in xenstore when any + * active hotplug script completes. + */ + enum xenbus_state state; + enum xenbus_state frontend_state; struct xenbus_watch hotplug_status_watch; u8 have_hotplug_status_watch:1; @@ -33,11 +39,15 @@ static int connect_rings(struct backend_info *); static void connect(struct backend_info *); static void backend_create_xenvif(struct backend_info *be); static void unregister_hotplug_status_watch(struct backend_info *be); +static void set_backend_state(struct backend_info *be, + enum xenbus_state state); static int netback_remove(struct xenbus_device *dev) { struct backend_info *be = dev_get_drvdata(&dev->dev); + set_backend_state(be, XenbusStateClosed); + unregister_hotplug_status_watch(be); if (be->vif) { kobject_uevent(&dev->dev.kobj, KOBJ_OFFLINE); @@ -126,6 +136,8 @@ static int netback_probe(struct xenbus_device *dev, if (err) goto fail; + be->state = XenbusStateInitWait; + /* This kicks hotplug scripts, so do it immediately. */ backend_create_xenvif(be); @@ -198,24 +210,113 @@ static void backend_create_xenvif(struct backend_info *be) kobject_uevent(&dev->dev.kobj, KOBJ_ONLINE); } - -static void disconnect_backend(struct xenbus_device *dev) +static void backend_disconnect(struct backend_info *be) { - struct backend_info *be = dev_get_drvdata(&dev->dev); - if (be->vif) xenvif_disconnect(be->vif); } -static void destroy_backend(struct xenbus_device *dev) +static void backend_connect(struct backend_info *be) { - struct backend_info *be = dev_get_drvdata(&dev->dev); + if (be->vif) + connect(be); +} - if (be->vif) { - kobject_uevent(&dev->dev.kobj, KOBJ_OFFLINE); - xenbus_rm(XBT_NIL, dev->nodename, "hotplug-status"); - xenvif_free(be->vif); - be->vif = NULL; +static inline void backend_switch_state(struct backend_info *be, + enum xenbus_state state) +{ + struct xenbus_device *dev = be->dev; + + pr_debug("%s -> %s\n", dev->nodename, xenbus_strstate(state)); + be->state = state; + + /* If we are waiting for a hotplug script then defer the + * actual xenbus state change. + */ + if (!be->have_hotplug_status_watch) + xenbus_switch_state(dev, state); +} + +/* Handle backend state transitions: + * + * The backend state starts in InitWait and the following transitions are + * allowed. + * + * InitWait -> Connected + * + * ^ \ | + * | \ | + * | \ | + * | \ | + * | \ | + * | \ | + * | V V + * + * Closed <-> Closing + * + * The state argument specifies the eventual state of the backend and the + * function transitions to that state via the shortest path. + */ +static void set_backend_state(struct backend_info *be, + enum xenbus_state state) +{ + while (be->state != state) { + switch (be->state) { + case XenbusStateClosed: + switch (state) { + case XenbusStateInitWait: + case XenbusStateConnected: + pr_info("%s: prepare for reconnect\n", + be->dev->nodename); + backend_switch_state(be, XenbusStateInitWait); + break; + case XenbusStateClosing: + backend_switch_state(be, XenbusStateClosing); + break; + default: + BUG(); + } + break; + case XenbusStateInitWait: + switch (state) { + case XenbusStateConnected: + backend_connect(be); + backend_switch_state(be, XenbusStateConnected); + break; + case XenbusStateClosing: + case XenbusStateClosed: + backend_switch_state(be, XenbusStateClosing); + break; + default: + BUG(); + } + break; + case XenbusStateConnected: + switch (state) { + case XenbusStateInitWait: + case XenbusStateClosing: + case XenbusStateClosed: + backend_disconnect(be); + backend_switch_state(be, XenbusStateClosing); + break; + default: + BUG(); + } + break; + case XenbusStateClosing: + switch (state) { + case XenbusStateInitWait: + case XenbusStateConnected: + case XenbusStateClosed: + backend_switch_state(be, XenbusStateClosed); + break; + default: + BUG(); + } + break; + default: + BUG(); + } } } @@ -227,41 +328,33 @@ static void frontend_changed(struct xenbus_device *dev, { struct backend_info *be = dev_get_drvdata(&dev->dev); - pr_debug("frontend state %s", xenbus_strstate(frontend_state)); + pr_debug("%s -> %s\n", dev->otherend, xenbus_strstate(frontend_state)); be->frontend_state = frontend_state; switch (frontend_state) { case XenbusStateInitialising: - if (dev->state == XenbusStateClosed) { - printk(KERN_INFO "%s: %s: prepare for reconnect\n", - __func__, dev->nodename); - xenbus_switch_state(dev, XenbusStateInitWait); - } + set_backend_state(be, XenbusStateInitWait); break; case XenbusStateInitialised: break; case XenbusStateConnected: - if (dev->state == XenbusStateConnected) - break; - if (be->vif) - connect(be); + set_backend_state(be, XenbusStateConnected); break; case XenbusStateClosing: - disconnect_backend(dev); - xenbus_switch_state(dev, XenbusStateClosing); + set_backend_state(be, XenbusStateClosing); break; case XenbusStateClosed: - xenbus_switch_state(dev, XenbusStateClosed); + set_backend_state(be, XenbusStateClosed); if (xenbus_dev_is_online(dev)) break; - destroy_backend(dev); /* fall through if not online */ case XenbusStateUnknown: + set_backend_state(be, XenbusStateClosed); device_unregister(&dev->dev); break; @@ -354,7 +447,9 @@ static void hotplug_status_changed(struct xenbus_watch *watch, if (IS_ERR(str)) return; if (len == sizeof("connected")-1 && !memcmp(str, "connected", len)) { - xenbus_switch_state(be->dev, XenbusStateConnected); + /* Complete any pending state change */ + xenbus_switch_state(be->dev, be->state); + /* Not interested in this watch anymore. */ unregister_hotplug_status_watch(be); } @@ -384,12 +479,8 @@ static void connect(struct backend_info *be) err = xenbus_watch_pathfmt(dev, &be->hotplug_status_watch, hotplug_status_changed, "%s/%s", dev->nodename, "hotplug-status"); - if (err) { - /* Switch now, since we can't do a watch. */ - xenbus_switch_state(dev, XenbusStateConnected); - } else { + if (!err) be->have_hotplug_status_watch = 1; - } netif_wake_queue(be->vif->dev); } |