Commit b3e3893e authored by Jarod Wilson's avatar Jarod Wilson Committed by David S. Miller

net: use core MTU range checking in misc drivers

firewire-net:
- set min/max_mtu
- remove fwnet_change_mtu

nes:
- set max_mtu
- clean up nes_netdev_change_mtu

xpnet:
- set min/max_mtu
- remove xpnet_dev_change_mtu

hippi:
- set min/max_mtu
- remove hippi_change_mtu

batman-adv:
- set max_mtu
- remove batadv_interface_change_mtu
- initialization is a little async, not 100% certain that max_mtu is set
  in the optimal place, don't have hardware to test with

rionet:
- set min/max_mtu
- remove rionet_change_mtu

slip:
- set min/max_mtu
- streamline sl_change_mtu

um/net_kern:
- remove pointless ndo_change_mtu

hsi/clients/ssi_protocol:
- use core MTU range checking
- remove now redundant ssip_pn_set_mtu

ipoib:
- set a default max MTU value
- Note: ipoib's actual max MTU can vary, depending on if the device is in
  connected mode or not, so we'll just set the max_mtu value to the max
  possible, and let the ndo_change_mtu function continue to validate any new
  MTU change requests with checks for CM or not. Note that ipoib has no
  min_mtu set, and thus, the network core's mtu > 0 check is the only lower
  bounds here.

mptlan:
- use net core MTU range checking
- remove now redundant mpt_lan_change_mtu

fddi:
- min_mtu = 21, max_mtu = 4470
- remove now redundant fddi_change_mtu (including export)

fjes:
- min_mtu = 8192, max_mtu = 65536
- The max_mtu value is actually one over IP_MAX_MTU here, but the idea is to
  get past the core net MTU range checks so fjes_change_mtu can validate a
  new MTU against what it supports (see fjes_support_mtu in fjes_hw.c)

hsr:
- min_mtu = 0 (calls ether_setup, max_mtu is 1500)

f_phonet:
- min_mtu = 6, max_mtu = 65541

u_ether:
- min_mtu = 14, max_mtu = 15412

phonet/pep-gprs:
- min_mtu = 576, max_mtu = 65530
- remove redundant gprs_set_mtu

CC: netdev@vger.kernel.org
CC: linux-rdma@vger.kernel.org
CC: Stefan Richter <stefanr@s5r6.in-berlin.de>
CC: Faisal Latif <faisal.latif@intel.com>
CC: linux-rdma@vger.kernel.org
CC: Cliff Whickman <cpw@sgi.com>
CC: Robin Holt <robinmholt@gmail.com>
CC: Jes Sorensen <jes@trained-monkey.org>
CC: Marek Lindner <mareklindner@neomailbox.ch>
CC: Simon Wunderlich <sw@simonwunderlich.de>
CC: Antonio Quartulli <a@unstable.cc>
CC: Sathya Prakash <sathya.prakash@broadcom.com>
CC: Chaitra P B <chaitra.basappa@broadcom.com>
CC: Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com>
CC: MPT-FusionLinux.pdl@broadcom.com
CC: Sebastian Reichel <sre@kernel.org>
CC: Felipe Balbi <balbi@kernel.org>
CC: Arvid Brodin <arvid.brodin@alten.se>
CC: Remi Denis-Courmont <courmisch@gmail.com>
Signed-off-by: default avatarJarod Wilson <jarod@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d0c2c997
...@@ -256,13 +256,6 @@ static void uml_net_tx_timeout(struct net_device *dev) ...@@ -256,13 +256,6 @@ static void uml_net_tx_timeout(struct net_device *dev)
netif_wake_queue(dev); netif_wake_queue(dev);
} }
static int uml_net_change_mtu(struct net_device *dev, int new_mtu)
{
dev->mtu = new_mtu;
return 0;
}
#ifdef CONFIG_NET_POLL_CONTROLLER #ifdef CONFIG_NET_POLL_CONTROLLER
static void uml_net_poll_controller(struct net_device *dev) static void uml_net_poll_controller(struct net_device *dev)
{ {
...@@ -374,7 +367,6 @@ static const struct net_device_ops uml_netdev_ops = { ...@@ -374,7 +367,6 @@ static const struct net_device_ops uml_netdev_ops = {
.ndo_set_rx_mode = uml_net_set_multicast_list, .ndo_set_rx_mode = uml_net_set_multicast_list,
.ndo_tx_timeout = uml_net_tx_timeout, .ndo_tx_timeout = uml_net_tx_timeout,
.ndo_set_mac_address = eth_mac_addr, .ndo_set_mac_address = eth_mac_addr,
.ndo_change_mtu = uml_net_change_mtu,
.ndo_validate_addr = eth_validate_addr, .ndo_validate_addr = eth_validate_addr,
#ifdef CONFIG_NET_POLL_CONTROLLER #ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = uml_net_poll_controller, .ndo_poll_controller = uml_net_poll_controller,
......
...@@ -1349,15 +1349,6 @@ static netdev_tx_t fwnet_tx(struct sk_buff *skb, struct net_device *net) ...@@ -1349,15 +1349,6 @@ static netdev_tx_t fwnet_tx(struct sk_buff *skb, struct net_device *net)
return NETDEV_TX_OK; return NETDEV_TX_OK;
} }
static int fwnet_change_mtu(struct net_device *net, int new_mtu)
{
if (new_mtu < 68)
return -EINVAL;
net->mtu = new_mtu;
return 0;
}
static const struct ethtool_ops fwnet_ethtool_ops = { static const struct ethtool_ops fwnet_ethtool_ops = {
.get_link = ethtool_op_get_link, .get_link = ethtool_op_get_link,
}; };
...@@ -1366,7 +1357,6 @@ static const struct net_device_ops fwnet_netdev_ops = { ...@@ -1366,7 +1357,6 @@ static const struct net_device_ops fwnet_netdev_ops = {
.ndo_open = fwnet_open, .ndo_open = fwnet_open,
.ndo_stop = fwnet_stop, .ndo_stop = fwnet_stop,
.ndo_start_xmit = fwnet_tx, .ndo_start_xmit = fwnet_tx,
.ndo_change_mtu = fwnet_change_mtu,
}; };
static void fwnet_init_dev(struct net_device *net) static void fwnet_init_dev(struct net_device *net)
...@@ -1435,7 +1425,6 @@ static int fwnet_probe(struct fw_unit *unit, ...@@ -1435,7 +1425,6 @@ static int fwnet_probe(struct fw_unit *unit,
struct net_device *net; struct net_device *net;
bool allocated_netdev = false; bool allocated_netdev = false;
struct fwnet_device *dev; struct fwnet_device *dev;
unsigned max_mtu;
int ret; int ret;
union fwnet_hwaddr *ha; union fwnet_hwaddr *ha;
...@@ -1478,9 +1467,10 @@ static int fwnet_probe(struct fw_unit *unit, ...@@ -1478,9 +1467,10 @@ static int fwnet_probe(struct fw_unit *unit,
* Use the RFC 2734 default 1500 octets or the maximum payload * Use the RFC 2734 default 1500 octets or the maximum payload
* as initial MTU * as initial MTU
*/ */
max_mtu = (1 << (card->max_receive + 1)) net->max_mtu = (1 << (card->max_receive + 1))
- sizeof(struct rfc2734_header) - IEEE1394_GASP_HDR_SIZE; - sizeof(struct rfc2734_header) - IEEE1394_GASP_HDR_SIZE;
net->mtu = min(1500U, max_mtu); net->mtu = min(1500U, net->max_mtu);
net->min_mtu = ETH_MIN_MTU;
/* Set our hardware address while we're at it */ /* Set our hardware address while we're at it */
ha = (union fwnet_hwaddr *)net->dev_addr; ha = (union fwnet_hwaddr *)net->dev_addr;
......
...@@ -960,15 +960,6 @@ static int ssip_pn_stop(struct net_device *dev) ...@@ -960,15 +960,6 @@ static int ssip_pn_stop(struct net_device *dev)
return 0; return 0;
} }
static int ssip_pn_set_mtu(struct net_device *dev, int new_mtu)
{
if (new_mtu > SSIP_MAX_MTU || new_mtu < PHONET_MIN_MTU)
return -EINVAL;
dev->mtu = new_mtu;
return 0;
}
static void ssip_xmit_work(struct work_struct *work) static void ssip_xmit_work(struct work_struct *work)
{ {
struct ssi_protocol *ssi = struct ssi_protocol *ssi =
...@@ -1060,7 +1051,6 @@ static const struct net_device_ops ssip_pn_ops = { ...@@ -1060,7 +1051,6 @@ static const struct net_device_ops ssip_pn_ops = {
.ndo_open = ssip_pn_open, .ndo_open = ssip_pn_open,
.ndo_stop = ssip_pn_stop, .ndo_stop = ssip_pn_stop,
.ndo_start_xmit = ssip_pn_xmit, .ndo_start_xmit = ssip_pn_xmit,
.ndo_change_mtu = ssip_pn_set_mtu,
}; };
static void ssip_pn_setup(struct net_device *dev) static void ssip_pn_setup(struct net_device *dev)
...@@ -1136,6 +1126,10 @@ static int ssi_protocol_probe(struct device *dev) ...@@ -1136,6 +1126,10 @@ static int ssi_protocol_probe(struct device *dev)
goto out1; goto out1;
} }
/* MTU range: 6 - 65535 */
ssi->netdev->min_mtu = PHONET_MIN_MTU;
ssi->netdev->max_mtu = SSIP_MAX_MTU;
SET_NETDEV_DEV(ssi->netdev, dev); SET_NETDEV_DEV(ssi->netdev, dev);
netif_carrier_off(ssi->netdev); netif_carrier_off(ssi->netdev);
err = register_netdev(ssi->netdev); err = register_netdev(ssi->netdev);
......
...@@ -65,7 +65,6 @@ MODULE_DESCRIPTION("NetEffect RNIC Low-level iWARP Driver"); ...@@ -65,7 +65,6 @@ MODULE_DESCRIPTION("NetEffect RNIC Low-level iWARP Driver");
MODULE_LICENSE("Dual BSD/GPL"); MODULE_LICENSE("Dual BSD/GPL");
MODULE_VERSION(DRV_VERSION); MODULE_VERSION(DRV_VERSION);
int max_mtu = 9000;
int interrupt_mod_interval = 0; int interrupt_mod_interval = 0;
/* Interoperability */ /* Interoperability */
......
...@@ -83,6 +83,8 @@ ...@@ -83,6 +83,8 @@
#define NES_FIRST_QPN 64 #define NES_FIRST_QPN 64
#define NES_SW_CONTEXT_ALIGN 1024 #define NES_SW_CONTEXT_ALIGN 1024
#define NES_MAX_MTU 9000
#define NES_NIC_MAX_NICS 16 #define NES_NIC_MAX_NICS 16
#define NES_MAX_ARP_TABLE_SIZE 4096 #define NES_MAX_ARP_TABLE_SIZE 4096
...@@ -169,8 +171,6 @@ do { \ ...@@ -169,8 +171,6 @@ do { \
#include "nes_cm.h" #include "nes_cm.h"
#include "nes_mgt.h" #include "nes_mgt.h"
extern int max_mtu;
#define max_frame_len (max_mtu+ETH_HLEN)
extern int interrupt_mod_interval; extern int interrupt_mod_interval;
extern int nes_if_count; extern int nes_if_count;
extern int mpa_version; extern int mpa_version;
......
...@@ -981,20 +981,16 @@ static int nes_netdev_change_mtu(struct net_device *netdev, int new_mtu) ...@@ -981,20 +981,16 @@ static int nes_netdev_change_mtu(struct net_device *netdev, int new_mtu)
{ {
struct nes_vnic *nesvnic = netdev_priv(netdev); struct nes_vnic *nesvnic = netdev_priv(netdev);
struct nes_device *nesdev = nesvnic->nesdev; struct nes_device *nesdev = nesvnic->nesdev;
int ret = 0;
u8 jumbomode = 0; u8 jumbomode = 0;
u32 nic_active; u32 nic_active;
u32 nic_active_bit; u32 nic_active_bit;
u32 uc_all_active; u32 uc_all_active;
u32 mc_all_active; u32 mc_all_active;
if ((new_mtu < ETH_ZLEN) || (new_mtu > max_mtu))
return -EINVAL;
netdev->mtu = new_mtu; netdev->mtu = new_mtu;
nesvnic->max_frame_size = new_mtu + VLAN_ETH_HLEN; nesvnic->max_frame_size = new_mtu + VLAN_ETH_HLEN;
if (netdev->mtu > 1500) { if (netdev->mtu > ETH_DATA_LEN) {
jumbomode=1; jumbomode=1;
} }
nes_nic_init_timer_defaults(nesdev, jumbomode); nes_nic_init_timer_defaults(nesdev, jumbomode);
...@@ -1020,7 +1016,7 @@ static int nes_netdev_change_mtu(struct net_device *netdev, int new_mtu) ...@@ -1020,7 +1016,7 @@ static int nes_netdev_change_mtu(struct net_device *netdev, int new_mtu)
nes_write_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL, nic_active); nes_write_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL, nic_active);
} }
return ret; return 0;
} }
...@@ -1658,7 +1654,7 @@ struct net_device *nes_netdev_init(struct nes_device *nesdev, ...@@ -1658,7 +1654,7 @@ struct net_device *nes_netdev_init(struct nes_device *nesdev,
netdev->watchdog_timeo = NES_TX_TIMEOUT; netdev->watchdog_timeo = NES_TX_TIMEOUT;
netdev->irq = nesdev->pcidev->irq; netdev->irq = nesdev->pcidev->irq;
netdev->mtu = ETH_DATA_LEN; netdev->max_mtu = NES_MAX_MTU;
netdev->hard_header_len = ETH_HLEN; netdev->hard_header_len = ETH_HLEN;
netdev->addr_len = ETH_ALEN; netdev->addr_len = ETH_ALEN;
netdev->type = ARPHRD_ETHER; netdev->type = ARPHRD_ETHER;
......
...@@ -2017,6 +2017,7 @@ static struct net_device *ipoib_add_port(const char *format, ...@@ -2017,6 +2017,7 @@ static struct net_device *ipoib_add_port(const char *format,
/* MTU will be reset when mcast join happens */ /* MTU will be reset when mcast join happens */
priv->dev->mtu = IPOIB_UD_MTU(priv->max_ib_mtu); priv->dev->mtu = IPOIB_UD_MTU(priv->max_ib_mtu);
priv->mcast_mtu = priv->admin_mtu = priv->dev->mtu; priv->mcast_mtu = priv->admin_mtu = priv->dev->mtu;
priv->dev->max_mtu = IPOIB_CM_MTU;
priv->dev->neigh_priv_len = sizeof(struct ipoib_neigh); priv->dev->neigh_priv_len = sizeof(struct ipoib_neigh);
......
...@@ -548,16 +548,6 @@ mpt_lan_close(struct net_device *dev) ...@@ -548,16 +548,6 @@ mpt_lan_close(struct net_device *dev)
return 0; return 0;
} }
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
static int
mpt_lan_change_mtu(struct net_device *dev, int new_mtu)
{
if ((new_mtu < MPT_LAN_MIN_MTU) || (new_mtu > MPT_LAN_MAX_MTU))
return -EINVAL;
dev->mtu = new_mtu;
return 0;
}
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/* Tx timeout handler. */ /* Tx timeout handler. */
static void static void
...@@ -1304,7 +1294,6 @@ static const struct net_device_ops mpt_netdev_ops = { ...@@ -1304,7 +1294,6 @@ static const struct net_device_ops mpt_netdev_ops = {
.ndo_open = mpt_lan_open, .ndo_open = mpt_lan_open,
.ndo_stop = mpt_lan_close, .ndo_stop = mpt_lan_close,
.ndo_start_xmit = mpt_lan_sdu_send, .ndo_start_xmit = mpt_lan_sdu_send,
.ndo_change_mtu = mpt_lan_change_mtu,
.ndo_tx_timeout = mpt_lan_tx_timeout, .ndo_tx_timeout = mpt_lan_tx_timeout,
}; };
...@@ -1375,6 +1364,10 @@ mpt_register_lan_device (MPT_ADAPTER *mpt_dev, int pnum) ...@@ -1375,6 +1364,10 @@ mpt_register_lan_device (MPT_ADAPTER *mpt_dev, int pnum)
dev->netdev_ops = &mpt_netdev_ops; dev->netdev_ops = &mpt_netdev_ops;
dev->watchdog_timeo = MPT_LAN_TX_TIMEOUT; dev->watchdog_timeo = MPT_LAN_TX_TIMEOUT;
/* MTU range: 96 - 65280 */
dev->min_mtu = MPT_LAN_MIN_MTU;
dev->max_mtu = MPT_LAN_MAX_MTU;
dlprintk((KERN_INFO MYNAM ": Finished registering dev " dlprintk((KERN_INFO MYNAM ": Finished registering dev "
"and setting initial values\n")); "and setting initial values\n"));
......
...@@ -118,6 +118,8 @@ static DEFINE_SPINLOCK(xpnet_broadcast_lock); ...@@ -118,6 +118,8 @@ static DEFINE_SPINLOCK(xpnet_broadcast_lock);
* now, the default is 64KB. * now, the default is 64KB.
*/ */
#define XPNET_MAX_MTU (0x800000UL - L1_CACHE_BYTES) #define XPNET_MAX_MTU (0x800000UL - L1_CACHE_BYTES)
/* 68 comes from min TCP+IP+MAC header */
#define XPNET_MIN_MTU 68
/* 32KB has been determined to be the ideal */ /* 32KB has been determined to be the ideal */
#define XPNET_DEF_MTU (0x8000UL) #define XPNET_DEF_MTU (0x8000UL)
...@@ -330,22 +332,6 @@ xpnet_dev_stop(struct net_device *dev) ...@@ -330,22 +332,6 @@ xpnet_dev_stop(struct net_device *dev)
return 0; return 0;
} }
static int
xpnet_dev_change_mtu(struct net_device *dev, int new_mtu)
{
/* 68 comes from min TCP+IP+MAC header */
if ((new_mtu < 68) || (new_mtu > XPNET_MAX_MTU)) {
dev_err(xpnet, "ifconfig %s mtu %d failed; value must be "
"between 68 and %ld\n", dev->name, new_mtu,
XPNET_MAX_MTU);
return -EINVAL;
}
dev->mtu = new_mtu;
dev_dbg(xpnet, "ifconfig %s mtu set to %d\n", dev->name, new_mtu);
return 0;
}
/* /*
* Notification that the other end has received the message and * Notification that the other end has received the message and
* DMA'd the skb information. At this point, they are done with * DMA'd the skb information. At this point, they are done with
...@@ -519,7 +505,6 @@ static const struct net_device_ops xpnet_netdev_ops = { ...@@ -519,7 +505,6 @@ static const struct net_device_ops xpnet_netdev_ops = {
.ndo_open = xpnet_dev_open, .ndo_open = xpnet_dev_open,
.ndo_stop = xpnet_dev_stop, .ndo_stop = xpnet_dev_stop,
.ndo_start_xmit = xpnet_dev_hard_start_xmit, .ndo_start_xmit = xpnet_dev_hard_start_xmit,
.ndo_change_mtu = xpnet_dev_change_mtu,
.ndo_tx_timeout = xpnet_dev_tx_timeout, .ndo_tx_timeout = xpnet_dev_tx_timeout,
.ndo_set_mac_address = eth_mac_addr, .ndo_set_mac_address = eth_mac_addr,
.ndo_validate_addr = eth_validate_addr, .ndo_validate_addr = eth_validate_addr,
...@@ -555,6 +540,8 @@ xpnet_init(void) ...@@ -555,6 +540,8 @@ xpnet_init(void)
xpnet_device->netdev_ops = &xpnet_netdev_ops; xpnet_device->netdev_ops = &xpnet_netdev_ops;
xpnet_device->mtu = XPNET_DEF_MTU; xpnet_device->mtu = XPNET_DEF_MTU;
xpnet_device->min_mtu = XPNET_MIN_MTU;
xpnet_device->max_mtu = XPNET_MAX_MTU;
/* /*
* Multicast assumes the LSB of the first octet is set for multicast * Multicast assumes the LSB of the first octet is set for multicast
......
...@@ -166,7 +166,6 @@ static const struct net_device_ops skfp_netdev_ops = { ...@@ -166,7 +166,6 @@ static const struct net_device_ops skfp_netdev_ops = {
.ndo_stop = skfp_close, .ndo_stop = skfp_close,
.ndo_start_xmit = skfp_send_pkt, .ndo_start_xmit = skfp_send_pkt,
.ndo_get_stats = skfp_ctl_get_stats, .ndo_get_stats = skfp_ctl_get_stats,
.ndo_change_mtu = fddi_change_mtu,
.ndo_set_rx_mode = skfp_ctl_set_multicast_list, .ndo_set_rx_mode = skfp_ctl_set_multicast_list,
.ndo_set_mac_address = skfp_ctl_set_mac_address, .ndo_set_mac_address = skfp_ctl_set_mac_address,
.ndo_do_ioctl = skfp_ioctl, .ndo_do_ioctl = skfp_ioctl,
......
...@@ -1316,6 +1316,8 @@ static void fjes_netdev_setup(struct net_device *netdev) ...@@ -1316,6 +1316,8 @@ static void fjes_netdev_setup(struct net_device *netdev)
netdev->netdev_ops = &fjes_netdev_ops; netdev->netdev_ops = &fjes_netdev_ops;
fjes_set_ethtool_ops(netdev); fjes_set_ethtool_ops(netdev);
netdev->mtu = fjes_support_mtu[3]; netdev->mtu = fjes_support_mtu[3];
netdev->min_mtu = fjes_support_mtu[0];
netdev->max_mtu = fjes_support_mtu[3];
netdev->flags |= IFF_BROADCAST; netdev->flags |= IFF_BROADCAST;
netdev->features |= NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_FILTER; netdev->features |= NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_FILTER;
} }
......
...@@ -68,7 +68,6 @@ static const struct net_device_ops rr_netdev_ops = { ...@@ -68,7 +68,6 @@ static const struct net_device_ops rr_netdev_ops = {
.ndo_stop = rr_close, .ndo_stop = rr_close,
.ndo_do_ioctl = rr_ioctl, .ndo_do_ioctl = rr_ioctl,
.ndo_start_xmit = rr_start_xmit, .ndo_start_xmit = rr_start_xmit,
.ndo_change_mtu = hippi_change_mtu,
.ndo_set_mac_address = hippi_mac_addr, .ndo_set_mac_address = hippi_mac_addr,
}; };
......
...@@ -466,17 +466,6 @@ static void rionet_set_msglevel(struct net_device *ndev, u32 value) ...@@ -466,17 +466,6 @@ static void rionet_set_msglevel(struct net_device *ndev, u32 value)
rnet->msg_enable = value; rnet->msg_enable = value;
} }
static int rionet_change_mtu(struct net_device *ndev, int new_mtu)
{
if ((new_mtu < 68) || (new_mtu > RIONET_MAX_MTU)) {
printk(KERN_ERR "%s: Invalid MTU size %d\n",
ndev->name, new_mtu);
return -EINVAL;
}
ndev->mtu = new_mtu;
return 0;
}
static const struct ethtool_ops rionet_ethtool_ops = { static const struct ethtool_ops rionet_ethtool_ops = {
.get_drvinfo = rionet_get_drvinfo, .get_drvinfo = rionet_get_drvinfo,
.get_msglevel = rionet_get_msglevel, .get_msglevel = rionet_get_msglevel,
...@@ -488,7 +477,6 @@ static const struct net_device_ops rionet_netdev_ops = { ...@@ -488,7 +477,6 @@ static const struct net_device_ops rionet_netdev_ops = {
.ndo_open = rionet_open, .ndo_open = rionet_open,
.ndo_stop = rionet_close, .ndo_stop = rionet_close,
.ndo_start_xmit = rionet_start_xmit, .ndo_start_xmit = rionet_start_xmit,
.ndo_change_mtu = rionet_change_mtu,
.ndo_validate_addr = eth_validate_addr, .ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = eth_mac_addr, .ndo_set_mac_address = eth_mac_addr,
}; };
...@@ -525,6 +513,9 @@ static int rionet_setup_netdev(struct rio_mport *mport, struct net_device *ndev) ...@@ -525,6 +513,9 @@ static int rionet_setup_netdev(struct rio_mport *mport, struct net_device *ndev)
ndev->netdev_ops = &rionet_netdev_ops; ndev->netdev_ops = &rionet_netdev_ops;
ndev->mtu = RIONET_MAX_MTU; ndev->mtu = RIONET_MAX_MTU;
/* MTU range: 68 - 4082 */
ndev->min_mtu = ETH_MIN_MTU;
ndev->max_mtu = RIONET_MAX_MTU;
ndev->features = NETIF_F_LLTX; ndev->features = NETIF_F_LLTX;
SET_NETDEV_DEV(ndev, &mport->dev); SET_NETDEV_DEV(ndev, &mport->dev);
ndev->ethtool_ops = &rionet_ethtool_ops; ndev->ethtool_ops = &rionet_ethtool_ops;
......
...@@ -561,12 +561,7 @@ static int sl_change_mtu(struct net_device *dev, int new_mtu) ...@@ -561,12 +561,7 @@ static int sl_change_mtu(struct net_device *dev, int new_mtu)
{ {
struct slip *sl = netdev_priv(dev); struct slip *sl = netdev_priv(dev);
if (new_mtu < 68 || new_mtu > 65534)
return -EINVAL;
if (new_mtu != dev->mtu)
return sl_realloc_bufs(sl, new_mtu); return sl_realloc_bufs(sl, new_mtu);
return 0;
} }
/* Netdevice get statistics request */ /* Netdevice get statistics request */
...@@ -663,6 +658,10 @@ static void sl_setup(struct net_device *dev) ...@@ -663,6 +658,10 @@ static void sl_setup(struct net_device *dev)
dev->addr_len = 0; dev->addr_len = 0;
dev->tx_queue_len = 10; dev->tx_queue_len = 10;
/* MTU range: 68 - 65534 */
dev->min_mtu = 68;
dev->max_mtu = 65534;
/* New-style flags. */ /* New-style flags. */
dev->flags = IFF_NOARP|IFF_POINTOPOINT|IFF_MULTICAST; dev->flags = IFF_NOARP|IFF_POINTOPOINT|IFF_MULTICAST;
} }
......
...@@ -261,19 +261,10 @@ static int pn_net_xmit(struct sk_buff *skb, struct net_device *dev) ...@@ -261,19 +261,10 @@ static int pn_net_xmit(struct sk_buff *skb, struct net_device *dev)
return NETDEV_TX_OK; return NETDEV_TX_OK;
} }
static int pn_net_mtu(struct net_device *dev, int new_mtu)
{
if ((new_mtu < PHONET_MIN_MTU) || (new_mtu > PHONET_MAX_MTU))
return -EINVAL;
dev->mtu = new_mtu;
return 0;
}
static const struct net_device_ops pn_netdev_ops = { static const struct net_device_ops pn_netdev_ops = {
.ndo_open = pn_net_open, .ndo_open = pn_net_open,
.ndo_stop = pn_net_close, .ndo_stop = pn_net_close,
.ndo_start_xmit = pn_net_xmit, .ndo_start_xmit = pn_net_xmit,
.ndo_change_mtu = pn_net_mtu,
}; };
static void pn_net_setup(struct net_device *dev) static void pn_net_setup(struct net_device *dev)
...@@ -282,6 +273,8 @@ static void pn_net_setup(struct net_device *dev) ...@@ -282,6 +273,8 @@ static void pn_net_setup(struct net_device *dev)
dev->type = ARPHRD_PHONET; dev->type = ARPHRD_PHONET;
dev->flags = IFF_POINTOPOINT | IFF_NOARP; dev->flags = IFF_POINTOPOINT | IFF_NOARP;
dev->mtu = PHONET_DEV_MTU; dev->mtu = PHONET_DEV_MTU;
dev->min_mtu = PHONET_MIN_MTU;
dev->max_mtu = PHONET_MAX_MTU;
dev->hard_header_len = 1; dev->hard_header_len = 1;
dev->dev_addr[0] = PN_MEDIA_USB; dev->dev_addr[0] = PN_MEDIA_USB;
dev->addr_len = 1; dev->addr_len = 1;
......
...@@ -142,15 +142,6 @@ static inline int qlen(struct usb_gadget *gadget, unsigned qmult) ...@@ -142,15 +142,6 @@ static inline int qlen(struct usb_gadget *gadget, unsigned qmult)
/* NETWORK DRIVER HOOKUP (to the layer above this driver) */ /* NETWORK DRIVER HOOKUP (to the layer above this driver) */
static int ueth_change_mtu(struct net_device *net, int new_mtu)
{
if (new_mtu <= ETH_HLEN || new_mtu > GETHER_MAX_ETH_FRAME_LEN)
return -ERANGE;
net->mtu = new_mtu;
return 0;
}
static void eth_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *p) static void eth_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *p)
{ {
struct eth_dev *dev = netdev_priv(net); struct eth_dev *dev = netdev_priv(net);
...@@ -736,7 +727,6 @@ static const struct net_device_ops eth_netdev_ops = { ...@@ -736,7 +727,6 @@ static const struct net_device_ops eth_netdev_ops = {
.ndo_open = eth_open, .ndo_open = eth_open,
.ndo_stop = eth_stop, .ndo_stop = eth_stop,
.ndo_start_xmit = eth_start_xmit, .ndo_start_xmit = eth_start_xmit,
.ndo_change_mtu = ueth_change_mtu,
.ndo_set_mac_address = eth_mac_addr, .ndo_set_mac_address = eth_mac_addr,
.ndo_validate_addr = eth_validate_addr, .ndo_validate_addr = eth_validate_addr,
}; };
...@@ -799,6 +789,10 @@ struct eth_dev *gether_setup_name(struct usb_gadget *g, ...@@ -799,6 +789,10 @@ struct eth_dev *gether_setup_name(struct usb_gadget *g,
net->ethtool_ops = &ops; net->ethtool_ops = &ops;
/* MTU range: 14 - 15412 */
net->min_mtu = ETH_HLEN;
net->max_mtu = GETHER_MAX_ETH_FRAME_LEN;
dev->gadget = g; dev->gadget = g;
SET_NETDEV_DEV(net, &g->dev); SET_NETDEV_DEV(net, &g->dev);
SET_NETDEV_DEVTYPE(net, &gadget_type); SET_NETDEV_DEVTYPE(net, &gadget_type);
......
...@@ -26,7 +26,6 @@ ...@@ -26,7 +26,6 @@
#ifdef __KERNEL__ #ifdef __KERNEL__
__be16 fddi_type_trans(struct sk_buff *skb, struct net_device *dev); __be16 fddi_type_trans(struct sk_buff *skb, struct net_device *dev);
int fddi_change_mtu(struct net_device *dev, int new_mtu);
struct net_device *alloc_fddidev(int sizeof_priv); struct net_device *alloc_fddidev(int sizeof_priv);
#endif #endif
......
...@@ -32,7 +32,6 @@ struct hippi_cb { ...@@ -32,7 +32,6 @@ struct hippi_cb {
}; };
__be16 hippi_type_trans(struct sk_buff *skb, struct net_device *dev); __be16 hippi_type_trans(struct sk_buff *skb, struct net_device *dev);
int hippi_change_mtu(struct net_device *dev, int new_mtu);
int hippi_mac_addr(struct net_device *dev, void *p); int hippi_mac_addr(struct net_device *dev, void *p);
int hippi_neigh_setup_dev(struct net_device *dev, struct neigh_parms *p); int hippi_neigh_setup_dev(struct net_device *dev, struct neigh_parms *p);
struct net_device *alloc_hippi_dev(int sizeof_priv); struct net_device *alloc_hippi_dev(int sizeof_priv);
......
...@@ -141,15 +141,6 @@ __be16 fddi_type_trans(struct sk_buff *skb, struct net_device *dev) ...@@ -141,15 +141,6 @@ __be16 fddi_type_trans(struct sk_buff *skb, struct net_device *dev)
EXPORT_SYMBOL(fddi_type_trans); EXPORT_SYMBOL(fddi_type_trans);
int fddi_change_mtu(struct net_device *dev, int new_mtu)
{
if ((new_mtu < FDDI_K_SNAP_HLEN) || (new_mtu > FDDI_K_SNAP_DLEN))
return -EINVAL;
dev->mtu = new_mtu;
return 0;
}
EXPORT_SYMBOL(fddi_change_mtu);
static const struct header_ops fddi_header_ops = { static const struct header_ops fddi_header_ops = {
.create = fddi_header, .create = fddi_header,
}; };
...@@ -161,6 +152,8 @@ static void fddi_setup(struct net_device *dev) ...@@ -161,6 +152,8 @@ static void fddi_setup(struct net_device *dev)
dev->type = ARPHRD_FDDI; dev->type = ARPHRD_FDDI;
dev->hard_header_len = FDDI_K_SNAP_HLEN+3; /* Assume 802.2 SNAP hdr len + 3 pad bytes */ dev->hard_header_len = FDDI_K_SNAP_HLEN+3; /* Assume 802.2 SNAP hdr len + 3 pad bytes */
dev->mtu = FDDI_K_SNAP_DLEN; /* Assume max payload of 802.2 SNAP frame */ dev->mtu = FDDI_K_SNAP_DLEN; /* Assume max payload of 802.2 SNAP frame */
dev->min_mtu = FDDI_K_SNAP_HLEN;
dev->max_mtu = FDDI_K_SNAP_DLEN;
dev->addr_len = FDDI_K_ALEN; dev->addr_len = FDDI_K_ALEN;
dev->tx_queue_len = 100; /* Long queues on FDDI */ dev->tx_queue_len = 100; /* Long queues on FDDI */
dev->flags = IFF_BROADCAST | IFF_MULTICAST; dev->flags = IFF_BROADCAST | IFF_MULTICAST;
......
...@@ -116,18 +116,6 @@ __be16 hippi_type_trans(struct sk_buff *skb, struct net_device *dev) ...@@ -116,18 +116,6 @@ __be16 hippi_type_trans(struct sk_buff *skb, struct net_device *dev)
EXPORT_SYMBOL(hippi_type_trans); EXPORT_SYMBOL(hippi_type_trans);
int hippi_change_mtu(struct net_device *dev, int new_mtu)
{
/*
* HIPPI's got these nice large MTUs.
*/
if ((new_mtu < 68) || (new_mtu > 65280))
return -EINVAL;
dev->mtu = new_mtu;
return 0;
}
EXPORT_SYMBOL(hippi_change_mtu);
/* /*
* For HIPPI we will actually use the lower 4 bytes of the hardware * For HIPPI we will actually use the lower 4 bytes of the hardware
* address as the I-FIELD rather than the actual hardware address. * address as the I-FIELD rather than the actual hardware address.
...@@ -174,6 +162,8 @@ static void hippi_setup(struct net_device *dev) ...@@ -174,6 +162,8 @@ static void hippi_setup(struct net_device *dev)
dev->type = ARPHRD_HIPPI; dev->type = ARPHRD_HIPPI;
dev->hard_header_len = HIPPI_HLEN; dev->hard_header_len = HIPPI_HLEN;
dev->mtu = 65280; dev->mtu = 65280;
dev->min_mtu = 68;
dev->max_mtu = 65280;
dev->addr_len = HIPPI_ALEN; dev->addr_len = HIPPI_ALEN;
dev->tx_queue_len = 25 /* 5 */; dev->tx_queue_len = 25 /* 5 */;
memset(dev->broadcast, 0xFF, HIPPI_ALEN); memset(dev->broadcast, 0xFF, HIPPI_ALEN);
......
...@@ -158,17 +158,6 @@ static int batadv_interface_set_mac_addr(struct net_device *dev, void *p) ...@@ -158,17 +158,6 @@ static int batadv_interface_set_mac_addr(struct net_device *dev, void *p)
return 0; return 0;
} }
static int batadv_interface_change_mtu(struct net_device *dev, int new_mtu)
{
/* check ranges */
if ((new_mtu < 68) || (new_mtu > batadv_hardif_min_mtu(dev)))
return -EINVAL;
dev->mtu = new_mtu;
return 0;
}
/** /**
* batadv_interface_set_rx_mode - set the rx mode of a device * batadv_interface_set_rx_mode - set the rx mode of a device
* @dev: registered network device to modify * @dev: registered network device to modify
...@@ -920,7 +909,6 @@ static const struct net_device_ops batadv_netdev_ops = { ...@@ -920,7 +909,6 @@ static const struct net_device_ops batadv_netdev_ops = {
.ndo_vlan_rx_add_vid = batadv_interface_add_vid, .ndo_vlan_rx_add_vid = batadv_interface_add_vid,
.ndo_vlan_rx_kill_vid = batadv_interface_kill_vid, .ndo_vlan_rx_kill_vid = batadv_interface_kill_vid,
.ndo_set_mac_address = batadv_interface_set_mac_addr, .ndo_set_mac_address = batadv_interface_set_mac_addr,
.ndo_change_mtu = batadv_interface_change_mtu,
.ndo_set_rx_mode = batadv_interface_set_rx_mode, .ndo_set_rx_mode = batadv_interface_set_rx_mode,
.ndo_start_xmit = batadv_interface_tx, .ndo_start_xmit = batadv_interface_tx,
.ndo_validate_addr = eth_validate_addr, .ndo_validate_addr = eth_validate_addr,
...@@ -987,6 +975,7 @@ struct net_device *batadv_softif_create(struct net *net, const char *name) ...@@ -987,6 +975,7 @@ struct net_device *batadv_softif_create(struct net *net, const char *name)
dev_net_set(soft_iface, net); dev_net_set(soft_iface, net);
soft_iface->rtnl_link_ops = &batadv_link_ops; soft_iface->rtnl_link_ops = &batadv_link_ops;
soft_iface->max_mtu = batadv_hardif_min_mtu(soft_iface);
ret = register_netdevice(soft_iface); ret = register_netdevice(soft_iface);
if (ret < 0) { if (ret < 0) {
......
...@@ -398,6 +398,7 @@ void hsr_dev_setup(struct net_device *dev) ...@@ -398,6 +398,7 @@ void hsr_dev_setup(struct net_device *dev)
random_ether_addr(dev->dev_addr); random_ether_addr(dev->dev_addr);
ether_setup(dev); ether_setup(dev);
dev->min_mtu = 0;
dev->header_ops = &hsr_header_ops; dev->header_ops = &hsr_header_ops;
dev->netdev_ops = &hsr_device_ops; dev->netdev_ops = &hsr_device_ops;
SET_NETDEV_DEVTYPE(dev, &hsr_type); SET_NETDEV_DEVTYPE(dev, &hsr_type);
......
...@@ -217,20 +217,10 @@ static netdev_tx_t gprs_xmit(struct sk_buff *skb, struct net_device *dev) ...@@ -217,20 +217,10 @@ static netdev_tx_t gprs_xmit(struct sk_buff *skb, struct net_device *dev)
return NETDEV_TX_OK; return NETDEV_TX_OK;
} }
static int gprs_set_mtu(struct net_device *dev, int new_mtu)
{
if ((new_mtu < 576) || (new_mtu > (PHONET_MAX_MTU - 11)))
return -EINVAL;
dev->mtu = new_mtu;
return 0;
}
static const struct net_device_ops gprs_netdev_ops = { static const struct net_device_ops gprs_netdev_ops = {
.ndo_open = gprs_open, .ndo_open = gprs_open,
.ndo_stop = gprs_close, .ndo_stop = gprs_close,
.ndo_start_xmit = gprs_xmit, .ndo_start_xmit = gprs_xmit,
.ndo_change_mtu = gprs_set_mtu,
}; };
static void gprs_setup(struct net_device *dev) static void gprs_setup(struct net_device *dev)
...@@ -239,6 +229,8 @@ static void gprs_setup(struct net_device *dev) ...@@ -239,6 +229,8 @@ static void gprs_setup(struct net_device *dev)
dev->type = ARPHRD_PHONET_PIPE; dev->type = ARPHRD_PHONET_PIPE;
dev->flags = IFF_POINTOPOINT | IFF_NOARP; dev->flags = IFF_POINTOPOINT | IFF_NOARP;
dev->mtu = GPRS_DEFAULT_MTU; dev->mtu = GPRS_DEFAULT_MTU;
dev->min_mtu = 576;
dev->max_mtu = (PHONET_MAX_MTU - 11);
dev->hard_header_len = 0; dev->hard_header_len = 0;
dev->addr_len = 0; dev->addr_len = 0;
dev->tx_queue_len = 10; dev->tx_queue_len = 10;
......
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