[PATCH 13/22] fjes: net_device_ops.ndo_change_mtu
From: Taku Izumi <hidden>
Date: 2015-06-18 00:53:24
Also in:
linux-acpi, platform-driver-x86
Subsystem:
the rest, x86 platform drivers · Maintainers:
Linus Torvalds, Hans de Goede, Ilpo Järvinen
This patch adds net_device_ops.ndo_change_mtu. Signed-off-by: Taku Izumi <redacted> --- drivers/platform/x86/fjes/fjes_main.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+)
diff --git a/drivers/platform/x86/fjes/fjes_main.c b/drivers/platform/x86/fjes/fjes_main.c
index eeda824..72541a7 100644
--- a/drivers/platform/x86/fjes/fjes_main.c
+++ b/drivers/platform/x86/fjes/fjes_main.c@@ -59,6 +59,7 @@ 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 *);
@@ -226,6 +227,7 @@ 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, }; /*
@@ -748,6 +750,34 @@ static struct rtnl_link_stats64 return stats; } +static int fjes_change_mtu(struct net_device *netdev, int new_mtu) +{ + int idx; + bool running = netif_running(netdev); + int ret = 0; + + 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;
--
1.8.3.1