diff options
Diffstat (limited to 'drivers/net/fjes/fjes_main.c')
| -rw-r--r-- | drivers/net/fjes/fjes_main.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/net/fjes/fjes_main.c b/drivers/net/fjes/fjes_main.c index 20feb3e0aa64..519976cd4d9e 100644 --- a/drivers/net/fjes/fjes_main.c +++ b/drivers/net/fjes/fjes_main.c @@ -57,6 +57,7 @@ static void fjes_tx_stall_task(struct work_struct *); static irqreturn_t fjes_intr(int, void*); static struct rtnl_link_stats64 * fjes_get_stats64(struct net_device *, struct rtnl_link_stats64 *); +static int fjes_change_mtu(struct net_device *, int); static int fjes_acpi_add(struct acpi_device *); static int fjes_acpi_remove(struct acpi_device *); @@ -222,6 +223,7 @@ static const struct net_device_ops fjes_netdev_ops = { .ndo_stop = fjes_close, .ndo_start_xmit = fjes_xmit_frame, .ndo_get_stats64 = fjes_get_stats64, + .ndo_change_mtu = fjes_change_mtu, }; /* fjes_open - Called when a network interface is made active */ @@ -713,6 +715,33 @@ fjes_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats) return stats; } +static int fjes_change_mtu(struct net_device *netdev, int new_mtu) +{ + bool running = netif_running(netdev); + int ret = 0; + int idx; + + for (idx = 0; fjes_support_mtu[idx] != 0; idx++) { + if (new_mtu <= fjes_support_mtu[idx]) { + new_mtu = fjes_support_mtu[idx]; + if (new_mtu == netdev->mtu) + return 0; + + if (running) + fjes_close(netdev); + + netdev->mtu = new_mtu; + + if (running) + ret = fjes_open(netdev); + + return ret; + } + } + + return -EINVAL; +} + static irqreturn_t fjes_intr(int irq, void *data) { struct fjes_adapter *adapter = data; |