diff options
| -rw-r--r-- | drivers/net/fjes/fjes_hw.c | 8 | ||||
| -rw-r--r-- | drivers/net/fjes/fjes_hw.h | 1 | ||||
| -rw-r--r-- | drivers/net/fjes/fjes_main.c | 60 |
3 files changed, 58 insertions, 11 deletions
diff --git a/drivers/net/fjes/fjes_hw.c b/drivers/net/fjes/fjes_hw.c index b103adb8d62e..e9f494bd70ad 100644 --- a/drivers/net/fjes/fjes_hw.c +++ b/drivers/net/fjes/fjes_hw.c @@ -179,6 +179,8 @@ void fjes_hw_setup_epbuf(struct epbuf_handler *epbh, u8 *mac_addr, u32 mtu) for (i = 0; i < EP_BUFFER_SUPPORT_VLAN_MAX; i++) info->v1i.vlan_id[i] = vlan_id[i]; + + info->v1i.rx_status |= FJES_RX_MTU_CHANGING_DONE; } void @@ -810,7 +812,8 @@ bool fjes_hw_check_mtu(struct epbuf_handler *epbh, u32 mtu) { union ep_buffer_info *info = epbh->info; - return (info->v1i.frame_max == FJES_MTU_TO_FRAME_SIZE(mtu)); + return ((info->v1i.frame_max == FJES_MTU_TO_FRAME_SIZE(mtu)) && + info->v1i.rx_status & FJES_RX_MTU_CHANGING_DONE); } bool fjes_hw_check_vlan_id(struct epbuf_handler *epbh, u16 vlan_id) @@ -863,6 +866,9 @@ bool fjes_hw_epbuf_rx_is_empty(struct epbuf_handler *epbh) { union ep_buffer_info *info = epbh->info; + if (!(info->v1i.rx_status & FJES_RX_MTU_CHANGING_DONE)) + return true; + if (info->v1i.count_max == 0) return true; diff --git a/drivers/net/fjes/fjes_hw.h b/drivers/net/fjes/fjes_hw.h index baee7f59834b..f40cf0792a39 100644 --- a/drivers/net/fjes/fjes_hw.h +++ b/drivers/net/fjes/fjes_hw.h @@ -57,6 +57,7 @@ struct fjes_hw; #define FJES_RX_STOP_REQ_DONE (0x1) #define FJES_RX_STOP_REQ_REQUEST (0x2) #define FJES_RX_POLL_WORK (0x4) +#define FJES_RX_MTU_CHANGING_DONE (0x8) #define EP_BUFFER_SIZE \ (((sizeof(union ep_buffer_info) + (128 * (64 * 1024))) \ diff --git a/drivers/net/fjes/fjes_main.c b/drivers/net/fjes/fjes_main.c index e22a86976dcf..3c0c1202f237 100644 --- a/drivers/net/fjes/fjes_main.c +++ b/drivers/net/fjes/fjes_main.c @@ -481,6 +481,9 @@ static void fjes_tx_stall_task(struct work_struct *work) info = adapter->hw.ep_shm_info[epid].tx.info; + if (!(info->v1i.rx_status & FJES_RX_MTU_CHANGING_DONE)) + return; + if (EP_RING_FULL(info->v1i.head, info->v1i.tail, info->v1i.count_max)) { all_queue_available = 0; @@ -760,9 +763,11 @@ fjes_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats) static int fjes_change_mtu(struct net_device *netdev, int new_mtu) { + struct fjes_adapter *adapter = netdev_priv(netdev); bool running = netif_running(netdev); - int ret = 0; - int idx; + struct fjes_hw *hw = &adapter->hw; + int ret = -EINVAL; + int idx, epidx; for (idx = 0; fjes_support_mtu[idx] != 0; idx++) { if (new_mtu <= fjes_support_mtu[idx]) { @@ -770,19 +775,54 @@ static int fjes_change_mtu(struct net_device *netdev, int new_mtu) if (new_mtu == netdev->mtu) return 0; - if (running) - fjes_close(netdev); + ret = 0; + break; + } + } + + if (ret) + return ret; + + if (running) { + for (epidx = 0; epidx < hw->max_epid; epidx++) { + if (epidx == hw->my_epid) + continue; + hw->ep_shm_info[epidx].tx.info->v1i.rx_status &= + ~FJES_RX_MTU_CHANGING_DONE; + } + netif_tx_stop_all_queues(netdev); + netif_carrier_off(netdev); + cancel_work_sync(&adapter->tx_stall_task); + napi_disable(&adapter->napi); + + msleep(1000); - netdev->mtu = new_mtu; + netif_tx_stop_all_queues(netdev); + } - if (running) - ret = fjes_open(netdev); + netdev->mtu = new_mtu; - return ret; + if (running) { + for (epidx = 0; epidx < hw->max_epid; epidx++) { + if (epidx == hw->my_epid) + continue; + + local_irq_disable(); + fjes_hw_setup_epbuf(&hw->ep_shm_info[epidx].tx, + netdev->dev_addr, + netdev->mtu); + local_irq_enable(); + + hw->ep_shm_info[epidx].tx.info->v1i.rx_status |= + FJES_RX_MTU_CHANGING_DONE; } + + netif_tx_wake_all_queues(netdev); + netif_carrier_on(netdev); + napi_enable(&adapter->napi); } - return -EINVAL; + return ret; } static int fjes_vlan_rx_add_vid(struct net_device *netdev, @@ -1204,7 +1244,7 @@ static void fjes_netdev_setup(struct net_device *netdev) netdev->watchdog_timeo = FJES_TX_RETRY_INTERVAL; netdev->netdev_ops = &fjes_netdev_ops; fjes_set_ethtool_ops(netdev); - netdev->mtu = fjes_support_mtu[0]; + netdev->mtu = fjes_support_mtu[3]; netdev->flags |= IFF_BROADCAST; netdev->features |= NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_FILTER; } |