net: deprecate eth_change_mtu, remove usage

With centralized MTU checking, there's nothing productive done by
eth_change_mtu that isn't already done in dev_set_mtu, so mark it as
deprecated and remove all usage of it in the kernel. All callers have been
audited for calls to alloc_etherdev* or ether_setup directly, which means
they all have a valid dev->min_mtu and dev->max_mtu. Now eth_change_mtu
prints out a netdev_warn about being deprecated, for the benefit of
out-of-tree drivers that might be utilizing it.

Of note, dvb_net.c actually had dev->mtu = 4096, while using
eth_change_mtu, meaning that if you ever tried changing it's mtu, you
couldn't set it above 1500 anymore. It's now getting dev->max_mtu also set
to 4096 to remedy that.

v2: fix up lantiq_etop, missed breakage due to drive not compiling on x86

CC: netdev@vger.kernel.org
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 files changed, 0 insertions, 7 deletions

diff --git a/drivers/net/ethernet/dec/tulip/de2104x.c b/drivers/net/ethernet/dec/tulip/de2104x.c
index cadcee645f74..90c573b8ccaf 100644
--- a/drivers/net/ethernet/dec/tulip/de2104x.c
+++ b/drivers/net/ethernet/dec/tulip/de2104x.c
@@ -1956,7 +1956,6 @@ static const struct net_device_ops de_netdev_ops = {
 	.ndo_start_xmit		= de_start_xmit,
 	.ndo_get_stats		= de_get_stats,
 	.ndo_tx_timeout 	= de_tx_timeout,
-	.ndo_change_mtu		= eth_change_mtu,
 	.ndo_set_mac_address 	= eth_mac_addr,
 	.ndo_validate_addr	= eth_validate_addr,
 };
diff --git a/drivers/net/ethernet/dec/tulip/de4x5.c b/drivers/net/ethernet/dec/tulip/de4x5.c
index 6620fc861c47..51fda3a6b13f 100644
--- a/drivers/net/ethernet/dec/tulip/de4x5.c
+++ b/drivers/net/ethernet/dec/tulip/de4x5.c
@@ -1085,7 +1085,6 @@ static const struct net_device_ops de4x5_netdev_ops = {
     .ndo_get_stats	= de4x5_get_stats,
     .ndo_set_rx_mode	= set_multicast_list,
     .ndo_do_ioctl	= de4x5_ioctl,
-    .ndo_change_mtu	= eth_change_mtu,
     .ndo_set_mac_address= eth_mac_addr,
     .ndo_validate_addr	= eth_validate_addr,
 };
diff --git a/drivers/net/ethernet/dec/tulip/dmfe.c b/drivers/net/ethernet/dec/tulip/dmfe.c
index 8ed0fd8b1dda..df4994919456 100644
--- a/drivers/net/ethernet/dec/tulip/dmfe.c
+++ b/drivers/net/ethernet/dec/tulip/dmfe.c
@@ -352,7 +352,6 @@ static const struct net_device_ops netdev_ops = {
 	.ndo_stop		= dmfe_stop,
 	.ndo_start_xmit		= dmfe_start_xmit,
 	.ndo_set_rx_mode	= dmfe_set_filter_mode,
-	.ndo_change_mtu		= eth_change_mtu,
 	.ndo_set_mac_address	= eth_mac_addr,
 	.ndo_validate_addr	= eth_validate_addr,
 #ifdef CONFIG_NET_POLL_CONTROLLER
diff --git a/drivers/net/ethernet/dec/tulip/tulip_core.c b/drivers/net/ethernet/dec/tulip/tulip_core.c
index bbde90bc74fe..5f1377449b8f 100644
--- a/drivers/net/ethernet/dec/tulip/tulip_core.c
+++ b/drivers/net/ethernet/dec/tulip/tulip_core.c
@@ -1282,7 +1282,6 @@ static const struct net_device_ops tulip_netdev_ops = {
 	.ndo_get_stats		= tulip_get_stats,
 	.ndo_do_ioctl 		= private_ioctl,
 	.ndo_set_rx_mode	= set_rx_mode,
-	.ndo_change_mtu		= eth_change_mtu,
 	.ndo_set_mac_address	= eth_mac_addr,
 	.ndo_validate_addr	= eth_validate_addr,
 #ifdef CONFIG_NET_POLL_CONTROLLER
diff --git a/drivers/net/ethernet/dec/tulip/uli526x.c b/drivers/net/ethernet/dec/tulip/uli526x.c
index e750b5ddc0fb..e1c4133b8787 100644
--- a/drivers/net/ethernet/dec/tulip/uli526x.c
+++ b/drivers/net/ethernet/dec/tulip/uli526x.c
@@ -269,7 +269,6 @@ static const struct net_device_ops netdev_ops = {
 	.ndo_stop		= uli526x_stop,
 	.ndo_start_xmit		= uli526x_start_xmit,
 	.ndo_set_rx_mode	= uli526x_set_filter_mode,
-	.ndo_change_mtu		= eth_change_mtu,
 	.ndo_set_mac_address	= eth_mac_addr,
 	.ndo_validate_addr	= eth_validate_addr,
 #ifdef CONFIG_NET_POLL_CONTROLLER
diff --git a/drivers/net/ethernet/dec/tulip/winbond-840.c b/drivers/net/ethernet/dec/tulip/winbond-840.c
index 1f62b9423851..feda96d585e7 100644
--- a/drivers/net/ethernet/dec/tulip/winbond-840.c
+++ b/drivers/net/ethernet/dec/tulip/winbond-840.c
@@ -353,7 +353,6 @@ static const struct net_device_ops netdev_ops = {
 	.ndo_set_rx_mode	= set_rx_mode,
 	.ndo_do_ioctl		= netdev_ioctl,
 	.ndo_tx_timeout		= tx_timeout,
-	.ndo_change_mtu		= eth_change_mtu,
 	.ndo_set_mac_address	= eth_mac_addr,
 	.ndo_validate_addr	= eth_validate_addr,
 };
diff --git a/drivers/net/ethernet/dec/tulip/xircom_cb.c b/drivers/net/ethernet/dec/tulip/xircom_cb.c
index 0e721cedfa67..19e4ea15b504 100644
--- a/drivers/net/ethernet/dec/tulip/xircom_cb.c
+++ b/drivers/net/ethernet/dec/tulip/xircom_cb.c
@@ -174,7 +174,6 @@ static const struct net_device_ops netdev_ops = {
 	.ndo_open		= xircom_open,
 	.ndo_stop		= xircom_close,
 	.ndo_start_xmit		= xircom_start_xmit,
-	.ndo_change_mtu		= eth_change_mtu,
 	.ndo_set_mac_address	= eth_mac_addr,
 	.ndo_validate_addr	= eth_validate_addr,
 #ifdef CONFIG_NET_POLL_CONTROLLER