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authorJarod Wilson <jarod@redhat.com>2016-10-20 13:55:16 -0400
committerDavid S. Miller <davem@davemloft.net>2016-10-20 14:51:08 -0400
commitd894be57ca92c8a8819ab544d550809e8731137b (patch)
treeed1c26b77203a2aa01485630de17c6c6b28a1a1c /drivers
parent1a61a8f1776758acb5111785c8a1688394fa3a60 (diff)
downloadblackbird-op-linux-d894be57ca92c8a8819ab544d550809e8731137b.tar.gz
blackbird-op-linux-d894be57ca92c8a8819ab544d550809e8731137b.zip
ethernet: use net core MTU range checking in more drivers
Somehow, I missed a healthy number of ethernet drivers in the last pass. Most of these drivers either were in need of an updated max_mtu to make jumbo frames possible to enable again. In a few cases, also setting a different min_mtu to match previous lower bounds. There are also a few drivers that had no upper bounds checking, so they're getting a brand new ETH_MAX_MTU that is identical to IP_MAX_MTU, but accessible by includes all ethernet and ethernet-like drivers all have already. acenic: - min_mtu = 0, max_mtu = 9000 amazon/ena: - min_mtu = 128, max_mtu = adapter->max_mtu amd/xgbe: - min_mtu = 0, max_mtu = 9000 sb1250: - min_mtu = 0, max_mtu = 1518 cxgb3: - min_mtu = 81, max_mtu = 65535 cxgb4: - min_mtu = 81, max_mtu = 9600 cxgb4vf: - min_mtu = 81, max_mtu = 65535 benet: - min_mtu = 256, max_mtu = 9000 ibmveth: - min_mtu = 68, max_mtu = 65535 ibmvnic: - min_mtu = adapter->min_mtu, max_mtu = adapter->max_mtu - remove now redundant ibmvnic_change_mtu jme: - min_mtu = 1280, max_mtu = 9202 mv643xx_eth: - min_mtu = 64, max_mtu = 9500 mlxsw: - min_mtu = 0, max_mtu = 65535 - Basically bypassing the core checks, and instead relying on dynamic checks in the respective switch drivers' ndo_change_mtu functions ns83820: - min_mtu = 0 - remove redundant ns83820_change_mtu, only checked for mtu > 1500 netxen: - min_mtu = 0, max_mtu = 8000 (P2), max_mtu = 9600 (P3) qlge: - min_mtu = 1500, max_mtu = 9000 - driver only supports setting mtu to 1500 or 9000, so the core check only rules out < 1500 and > 9000, qlge_change_mtu still needs to check that the value is 1500 or 9000 qualcomm/emac: - min_mtu = 46, max_mtu = 9194 xilinx_axienet: - min_mtu = 64, max_mtu = 9000 Fixes: 61e84623ace3 ("net: centralize net_device min/max MTU checking") CC: netdev@vger.kernel.org CC: Jes Sorensen <jes@trained-monkey.org> CC: Netanel Belgazal <netanel@annapurnalabs.com> CC: Tom Lendacky <thomas.lendacky@amd.com> CC: Santosh Raspatur <santosh@chelsio.com> CC: Hariprasad S <hariprasad@chelsio.com> CC: Sathya Perla <sathya.perla@broadcom.com> CC: Ajit Khaparde <ajit.khaparde@broadcom.com> CC: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com> CC: Somnath Kotur <somnath.kotur@broadcom.com> CC: Thomas Falcon <tlfalcon@linux.vnet.ibm.com> CC: John Allen <jallen@linux.vnet.ibm.com> CC: Guo-Fu Tseng <cooldavid@cooldavid.org> CC: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> CC: Jiri Pirko <jiri@mellanox.com> CC: Ido Schimmel <idosch@mellanox.com> CC: Manish Chopra <manish.chopra@qlogic.com> CC: Sony Chacko <sony.chacko@qlogic.com> CC: Rajesh Borundia <rajesh.borundia@qlogic.com> CC: Timur Tabi <timur@codeaurora.org> CC: Anirudha Sarangi <anirudh@xilinx.com> CC: John Linn <John.Linn@xilinx.com> Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/alteon/acenic.c5
-rw-r--r--drivers/net/ethernet/amazon/ena/ena_netdev.c9
-rw-r--r--drivers/net/ethernet/amd/xgbe/xgbe-drv.c5
-rw-r--r--drivers/net/ethernet/amd/xgbe/xgbe-main.c2
-rw-r--r--drivers/net/ethernet/broadcom/sb1250-mac.c12
-rw-r--r--drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c4
-rw-r--r--drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c6
-rw-r--r--drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c6
-rw-r--r--drivers/net/ethernet/emulex/benet/be_main.c22
-rw-r--r--drivers/net/ethernet/ibm/ibmveth.c6
-rw-r--r--drivers/net/ethernet/ibm/ibmvnic.c16
-rw-r--r--drivers/net/ethernet/jme.c12
-rw-r--r--drivers/net/ethernet/marvell/mv643xx_eth.c7
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/spectrum.c3
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/switchx2.c3
-rw-r--r--drivers/net/ethernet/natsemi/ns83820.c11
-rw-r--r--drivers/net/ethernet/qlogic/netxen/netxen_nic_hw.c12
-rw-r--r--drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c7
-rw-r--r--drivers/net/ethernet/qlogic/qlge/qlge_main.c7
-rw-r--r--drivers/net/ethernet/qualcomm/emac/emac.c13
-rw-r--r--drivers/net/ethernet/xilinx/xilinx_axienet_main.c7
21 files changed, 67 insertions, 108 deletions
diff --git a/drivers/net/ethernet/alteon/acenic.c b/drivers/net/ethernet/alteon/acenic.c
index b90a26b13fdf..a5c1e290677a 100644
--- a/drivers/net/ethernet/alteon/acenic.c
+++ b/drivers/net/ethernet/alteon/acenic.c
@@ -474,6 +474,8 @@ static int acenic_probe_one(struct pci_dev *pdev,
dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
dev->watchdog_timeo = 5*HZ;
+ dev->min_mtu = 0;
+ dev->max_mtu = ACE_JUMBO_MTU;
dev->netdev_ops = &ace_netdev_ops;
dev->ethtool_ops = &ace_ethtool_ops;
@@ -2548,9 +2550,6 @@ static int ace_change_mtu(struct net_device *dev, int new_mtu)
struct ace_private *ap = netdev_priv(dev);
struct ace_regs __iomem *regs = ap->regs;
- if (new_mtu > ACE_JUMBO_MTU)
- return -EINVAL;
-
writel(new_mtu + ETH_HLEN + 4, &regs->IfMtu);
dev->mtu = new_mtu;
diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c
index bfeaec5bd7b9..2a55ab00686a 100644
--- a/drivers/net/ethernet/amazon/ena/ena_netdev.c
+++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c
@@ -103,13 +103,6 @@ static int ena_change_mtu(struct net_device *dev, int new_mtu)
struct ena_adapter *adapter = netdev_priv(dev);
int ret;
- if ((new_mtu > adapter->max_mtu) || (new_mtu < ENA_MIN_MTU)) {
- netif_err(adapter, drv, dev,
- "Invalid MTU setting. new_mtu: %d\n", new_mtu);
-
- return -EINVAL;
- }
-
ret = ena_com_set_dev_mtu(adapter->ena_dev, new_mtu);
if (!ret) {
netif_dbg(adapter, drv, dev, "set MTU to %d\n", new_mtu);
@@ -2755,6 +2748,8 @@ static void ena_set_conf_feat_params(struct ena_adapter *adapter,
ena_set_dev_offloads(feat, netdev);
adapter->max_mtu = feat->dev_attr.max_mtu;
+ netdev->max_mtu = adapter->max_mtu;
+ netdev->min_mtu = ENA_MIN_MTU;
}
static int ena_rss_init_default(struct ena_adapter *adapter)
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
index 7f9216db026f..c4e668208e04 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
@@ -257,11 +257,6 @@ static int xgbe_calc_rx_buf_size(struct net_device *netdev, unsigned int mtu)
{
unsigned int rx_buf_size;
- if (mtu > XGMAC_JUMBO_PACKET_MTU) {
- netdev_alert(netdev, "MTU exceeds maximum supported value\n");
- return -EINVAL;
- }
-
rx_buf_size = mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
rx_buf_size = clamp_val(rx_buf_size, XGBE_RX_MIN_BUF_SIZE, PAGE_SIZE);
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-main.c b/drivers/net/ethernet/amd/xgbe/xgbe-main.c
index 9de078819aa6..667e1209a2f5 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-main.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-main.c
@@ -738,6 +738,8 @@ static int xgbe_probe(struct platform_device *pdev)
pdata->netdev_features = netdev->features;
netdev->priv_flags |= IFF_UNICAST_FLT;
+ netdev->min_mtu = 0;
+ netdev->max_mtu = XGMAC_JUMBO_PACKET_MTU;
/* Use default watchdog timeout */
netdev->watchdog_timeo = 0;
diff --git a/drivers/net/ethernet/broadcom/sb1250-mac.c b/drivers/net/ethernet/broadcom/sb1250-mac.c
index f1b81187a201..cb312e4c89f4 100644
--- a/drivers/net/ethernet/broadcom/sb1250-mac.c
+++ b/drivers/net/ethernet/broadcom/sb1250-mac.c
@@ -2147,15 +2147,6 @@ static void sbmac_setmulti(struct sbmac_softc *sc)
}
}
-static int sb1250_change_mtu(struct net_device *_dev, int new_mtu)
-{
- if (new_mtu > ENET_PACKET_SIZE)
- return -EINVAL;
- _dev->mtu = new_mtu;
- pr_info("changing the mtu to %d\n", new_mtu);
- return 0;
-}
-
static const struct net_device_ops sbmac_netdev_ops = {
.ndo_open = sbmac_open,
.ndo_stop = sbmac_close,
@@ -2163,7 +2154,6 @@ static const struct net_device_ops sbmac_netdev_ops = {
.ndo_set_rx_mode = sbmac_set_rx_mode,
.ndo_tx_timeout = sbmac_tx_timeout,
.ndo_do_ioctl = sbmac_mii_ioctl,
- .ndo_change_mtu = sb1250_change_mtu,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = eth_mac_addr,
#ifdef CONFIG_NET_POLL_CONTROLLER
@@ -2229,6 +2219,8 @@ static int sbmac_init(struct platform_device *pldev, long long base)
dev->netdev_ops = &sbmac_netdev_ops;
dev->watchdog_timeo = TX_TIMEOUT;
+ dev->max_mtu = 0;
+ dev->max_mtu = ENET_PACKET_SIZE;
netif_napi_add(dev, &sc->napi, sbmac_poll, 16);
diff --git a/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c b/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c
index 43da891fab97..092b3c16440b 100644
--- a/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c
@@ -2531,8 +2531,6 @@ static int cxgb_change_mtu(struct net_device *dev, int new_mtu)
struct adapter *adapter = pi->adapter;
int ret;
- if (new_mtu < 81) /* accommodate SACK */
- return -EINVAL;
if ((ret = t3_mac_set_mtu(&pi->mac, new_mtu)))
return ret;
dev->mtu = new_mtu;
@@ -3295,6 +3293,8 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
netdev->netdev_ops = &cxgb_netdev_ops;
netdev->ethtool_ops = &cxgb_ethtool_ops;
+ netdev->min_mtu = 81;
+ netdev->max_mtu = ETH_MAX_MTU;
}
pci_set_drvdata(pdev, adapter);
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
index f320497368f4..b0bb23f95beb 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
@@ -2502,8 +2502,6 @@ static int cxgb_change_mtu(struct net_device *dev, int new_mtu)
int ret;
struct port_info *pi = netdev_priv(dev);
- if (new_mtu < 81 || new_mtu > MAX_MTU) /* accommodate SACK */
- return -EINVAL;
ret = t4_set_rxmode(pi->adapter, pi->adapter->pf, pi->viid, new_mtu, -1,
-1, -1, -1, true);
if (!ret)
@@ -4803,6 +4801,10 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
netdev->priv_flags |= IFF_UNICAST_FLT;
+ /* MTU range: 81 - 9600 */
+ netdev->min_mtu = 81;
+ netdev->max_mtu = MAX_MTU;
+
netdev->netdev_ops = &cxgb4_netdev_ops;
#ifdef CONFIG_CHELSIO_T4_DCB
netdev->dcbnl_ops = &cxgb4_dcb_ops;
diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c b/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c
index 100b2cc064a3..5d4da0e8acaa 100644
--- a/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c
@@ -1108,10 +1108,6 @@ static int cxgb4vf_change_mtu(struct net_device *dev, int new_mtu)
int ret;
struct port_info *pi = netdev_priv(dev);
- /* accommodate SACK */
- if (new_mtu < 81)
- return -EINVAL;
-
ret = t4vf_set_rxmode(pi->adapter, pi->viid, new_mtu,
-1, -1, -1, -1, true);
if (!ret)
@@ -2966,6 +2962,8 @@ static int cxgb4vf_pci_probe(struct pci_dev *pdev,
netdev->features |= NETIF_F_HIGHDMA;
netdev->priv_flags |= IFF_UNICAST_FLT;
+ netdev->min_mtu = 81;
+ netdev->max_mtu = ETH_MAX_MTU;
netdev->netdev_ops = &cxgb4vf_netdev_ops;
netdev->ethtool_ops = &cxgb4vf_ethtool_ops;
diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index cece8a08edca..3f6152cc648c 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -1406,23 +1406,6 @@ drop:
return NETDEV_TX_OK;
}
-static int be_change_mtu(struct net_device *netdev, int new_mtu)
-{
- struct be_adapter *adapter = netdev_priv(netdev);
- struct device *dev = &adapter->pdev->dev;
-
- if (new_mtu < BE_MIN_MTU || new_mtu > BE_MAX_MTU) {
- dev_info(dev, "MTU must be between %d and %d bytes\n",
- BE_MIN_MTU, BE_MAX_MTU);
- return -EINVAL;
- }
-
- dev_info(dev, "MTU changed from %d to %d bytes\n",
- netdev->mtu, new_mtu);
- netdev->mtu = new_mtu;
- return 0;
-}
-
static inline bool be_in_all_promisc(struct be_adapter *adapter)
{
return (adapter->if_flags & BE_IF_FLAGS_ALL_PROMISCUOUS) ==
@@ -5216,7 +5199,6 @@ static const struct net_device_ops be_netdev_ops = {
.ndo_start_xmit = be_xmit,
.ndo_set_rx_mode = be_set_rx_mode,
.ndo_set_mac_address = be_mac_addr_set,
- .ndo_change_mtu = be_change_mtu,
.ndo_get_stats64 = be_get_stats64,
.ndo_validate_addr = eth_validate_addr,
.ndo_vlan_rx_add_vid = be_vlan_add_vid,
@@ -5266,6 +5248,10 @@ static void be_netdev_init(struct net_device *netdev)
netdev->netdev_ops = &be_netdev_ops;
netdev->ethtool_ops = &be_ethtool_ops;
+
+ /* MTU range: 256 - 9000 */
+ netdev->min_mtu = BE_MIN_MTU;
+ netdev->max_mtu = BE_MAX_MTU;
}
static void be_cleanup(struct be_adapter *adapter)
diff --git a/drivers/net/ethernet/ibm/ibmveth.c b/drivers/net/ethernet/ibm/ibmveth.c
index ebe60719e489..29c05d0d79a9 100644
--- a/drivers/net/ethernet/ibm/ibmveth.c
+++ b/drivers/net/ethernet/ibm/ibmveth.c
@@ -1349,9 +1349,6 @@ static int ibmveth_change_mtu(struct net_device *dev, int new_mtu)
int i, rc;
int need_restart = 0;
- if (new_mtu < IBMVETH_MIN_MTU)
- return -EINVAL;
-
for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++)
if (new_mtu_oh <= adapter->rx_buff_pool[i].buff_size)
break;
@@ -1551,6 +1548,9 @@ static int ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id)
netdev->hw_features |= NETIF_F_TSO;
}
+ netdev->min_mtu = IBMVETH_MIN_MTU;
+ netdev->min_mtu = ETH_MAX_MTU;
+
memcpy(netdev->dev_addr, mac_addr_p, ETH_ALEN);
if (firmware_has_feature(FW_FEATURE_CMO))
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index bfe17d9c022d..657206be7ba9 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -902,17 +902,6 @@ static int ibmvnic_set_mac(struct net_device *netdev, void *p)
return 0;
}
-static int ibmvnic_change_mtu(struct net_device *netdev, int new_mtu)
-{
- struct ibmvnic_adapter *adapter = netdev_priv(netdev);
-
- if (new_mtu > adapter->req_mtu || new_mtu < adapter->min_mtu)
- return -EINVAL;
-
- netdev->mtu = new_mtu;
- return 0;
-}
-
static void ibmvnic_tx_timeout(struct net_device *dev)
{
struct ibmvnic_adapter *adapter = netdev_priv(dev);
@@ -1029,7 +1018,6 @@ static const struct net_device_ops ibmvnic_netdev_ops = {
.ndo_set_rx_mode = ibmvnic_set_multi,
.ndo_set_mac_address = ibmvnic_set_mac,
.ndo_validate_addr = eth_validate_addr,
- .ndo_change_mtu = ibmvnic_change_mtu,
.ndo_tx_timeout = ibmvnic_tx_timeout,
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = ibmvnic_netpoll_controller,
@@ -2638,10 +2626,12 @@ static void handle_query_cap_rsp(union ibmvnic_crq *crq,
break;
case MIN_MTU:
adapter->min_mtu = be64_to_cpu(crq->query_capability.number);
+ netdev->min_mtu = adapter->min_mtu;
netdev_dbg(netdev, "min_mtu = %lld\n", adapter->min_mtu);
break;
case MAX_MTU:
adapter->max_mtu = be64_to_cpu(crq->query_capability.number);
+ netdev->max_mtu = adapter->max_mtu;
netdev_dbg(netdev, "max_mtu = %lld\n", adapter->max_mtu);
break;
case MAX_MULTICAST_FILTERS:
@@ -3654,6 +3644,8 @@ static void handle_crq_init_rsp(struct work_struct *work)
goto task_failed;
netdev->real_num_tx_queues = adapter->req_tx_queues;
+ netdev->min_mtu = adapter->min_mtu;
+ netdev->max_mtu = adapter->max_mtu;
if (adapter->failover) {
adapter->failover = false;
diff --git a/drivers/net/ethernet/jme.c b/drivers/net/ethernet/jme.c
index 836ebd8ee768..f9fcab54783c 100644
--- a/drivers/net/ethernet/jme.c
+++ b/drivers/net/ethernet/jme.c
@@ -2357,14 +2357,6 @@ jme_change_mtu(struct net_device *netdev, int new_mtu)
{
struct jme_adapter *jme = netdev_priv(netdev);
- if (new_mtu == jme->old_mtu)
- return 0;
-
- if (((new_mtu + ETH_HLEN) > MAX_ETHERNET_JUMBO_PACKET_SIZE) ||
- ((new_mtu) < IPV6_MIN_MTU))
- return -EINVAL;
-
-
netdev->mtu = new_mtu;
netdev_update_features(netdev);
@@ -3063,6 +3055,10 @@ jme_init_one(struct pci_dev *pdev,
if (using_dac)
netdev->features |= NETIF_F_HIGHDMA;
+ /* MTU range: 1280 - 9202*/
+ netdev->min_mtu = IPV6_MIN_MTU;
+ netdev->max_mtu = MAX_ETHERNET_JUMBO_PACKET_SIZE - ETH_HLEN;
+
SET_NETDEV_DEV(netdev, &pdev->dev);
pci_set_drvdata(pdev, netdev);
diff --git a/drivers/net/ethernet/marvell/mv643xx_eth.c b/drivers/net/ethernet/marvell/mv643xx_eth.c
index 18e6bb6e3867..68675d83bdc5 100644
--- a/drivers/net/ethernet/marvell/mv643xx_eth.c
+++ b/drivers/net/ethernet/marvell/mv643xx_eth.c
@@ -2585,9 +2585,6 @@ static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu)
{
struct mv643xx_eth_private *mp = netdev_priv(dev);
- if (new_mtu < 64 || new_mtu > 9500)
- return -EINVAL;
-
dev->mtu = new_mtu;
mv643xx_eth_recalc_skb_size(mp);
tx_set_rate(mp, 1000000000, 16777216);
@@ -3206,6 +3203,10 @@ static int mv643xx_eth_probe(struct platform_device *pdev)
dev->priv_flags |= IFF_UNICAST_FLT;
dev->gso_max_segs = MV643XX_MAX_TSO_SEGS;
+ /* MTU range: 64 - 9500 */
+ dev->min_mtu = 64;
+ dev->max_mtu = 9500;
+
SET_NETDEV_DEV(dev, &pdev->dev);
if (mp->shared->win_protect)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 99805fd3d110..6d8cb22579ee 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -2284,6 +2284,9 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_TC;
dev->hw_features |= NETIF_F_HW_TC;
+ dev->min_mtu = 0;
+ dev->max_mtu = ETH_MAX_MTU;
+
/* Each packet needs to have a Tx header (metadata) on top all other
* headers.
*/
diff --git a/drivers/net/ethernet/mellanox/mlxsw/switchx2.c b/drivers/net/ethernet/mellanox/mlxsw/switchx2.c
index c0c23e2f3275..66af63d99b8b 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/switchx2.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/switchx2.c
@@ -994,6 +994,9 @@ static int mlxsw_sx_port_create(struct mlxsw_sx *mlxsw_sx, u8 local_port)
dev->features |= NETIF_F_NETNS_LOCAL | NETIF_F_LLTX | NETIF_F_SG |
NETIF_F_VLAN_CHALLENGED;
+ dev->min_mtu = 0;
+ dev->max_mtu = ETH_MAX_MTU;
+
/* Each packet needs to have a Tx header (metadata) on top all other
* headers.
*/
diff --git a/drivers/net/ethernet/natsemi/ns83820.c b/drivers/net/ethernet/natsemi/ns83820.c
index 569ade6cf85c..a34631ed741d 100644
--- a/drivers/net/ethernet/natsemi/ns83820.c
+++ b/drivers/net/ethernet/natsemi/ns83820.c
@@ -1679,14 +1679,6 @@ static void ns83820_getmac(struct ns83820 *dev, u8 *mac)
}
}
-static int ns83820_change_mtu(struct net_device *ndev, int new_mtu)
-{
- if (new_mtu > RX_BUF_SIZE)
- return -EINVAL;
- ndev->mtu = new_mtu;
- return 0;
-}
-
static void ns83820_set_multicast(struct net_device *ndev)
{
struct ns83820 *dev = PRIV(ndev);
@@ -1933,7 +1925,6 @@ static const struct net_device_ops netdev_ops = {
.ndo_stop = ns83820_stop,
.ndo_start_xmit = ns83820_hard_start_xmit,
.ndo_get_stats = ns83820_get_stats,
- .ndo_change_mtu = ns83820_change_mtu,
.ndo_set_rx_mode = ns83820_set_multicast,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = eth_mac_addr,
@@ -2190,6 +2181,8 @@ static int ns83820_init_one(struct pci_dev *pci_dev,
ndev->features |= NETIF_F_SG;
ndev->features |= NETIF_F_IP_CSUM;
+ ndev->min_mtu = 0;
+
#ifdef NS83820_VLAN_ACCEL_SUPPORT
/* We also support hardware vlan acceleration */
ndev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
diff --git a/drivers/net/ethernet/qlogic/netxen/netxen_nic_hw.c b/drivers/net/ethernet/qlogic/netxen/netxen_nic_hw.c
index 2b10f1bcd151..a996801d442d 100644
--- a/drivers/net/ethernet/qlogic/netxen/netxen_nic_hw.c
+++ b/drivers/net/ethernet/qlogic/netxen/netxen_nic_hw.c
@@ -987,20 +987,8 @@ int netxen_send_lro_cleanup(struct netxen_adapter *adapter)
int netxen_nic_change_mtu(struct net_device *netdev, int mtu)
{
struct netxen_adapter *adapter = netdev_priv(netdev);
- int max_mtu;
int rc = 0;
- if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
- max_mtu = P3_MAX_MTU;
- else
- max_mtu = P2_MAX_MTU;
-
- if (mtu > max_mtu) {
- printk(KERN_ERR "%s: mtu > %d bytes unsupported\n",
- netdev->name, max_mtu);
- return -EINVAL;
- }
-
if (adapter->set_mtu)
rc = adapter->set_mtu(adapter, mtu);
diff --git a/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c b/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c
index 7a0281a36c28..561fb94c7267 100644
--- a/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c
+++ b/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c
@@ -1572,6 +1572,13 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
adapter->physical_port = i;
}
+ /* MTU range: 0 - 8000 (P2) or 9600 (P3) */
+ netdev->min_mtu = 0;
+ if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
+ netdev->max_mtu = P3_MAX_MTU;
+ else
+ netdev->max_mtu = P2_MAX_MTU;
+
netxen_nic_clear_stats(adapter);
err = netxen_setup_intr(adapter);
diff --git a/drivers/net/ethernet/qlogic/qlge/qlge_main.c b/drivers/net/ethernet/qlogic/qlge/qlge_main.c
index fd4a8e473f11..1409412ab39d 100644
--- a/drivers/net/ethernet/qlogic/qlge/qlge_main.c
+++ b/drivers/net/ethernet/qlogic/qlge/qlge_main.c
@@ -4788,6 +4788,13 @@ static int qlge_probe(struct pci_dev *pdev,
ndev->ethtool_ops = &qlge_ethtool_ops;
ndev->watchdog_timeo = 10 * HZ;
+ /* MTU range: this driver only supports 1500 or 9000, so this only
+ * filters out values above or below, and we'll rely on
+ * qlge_change_mtu to make sure only 1500 or 9000 are allowed
+ */
+ ndev->min_mtu = ETH_DATA_LEN;
+ ndev->max_mtu = 9000;
+
err = register_netdev(ndev);
if (err) {
dev_err(&pdev->dev, "net device registration failed.\n");
diff --git a/drivers/net/ethernet/qualcomm/emac/emac.c b/drivers/net/ethernet/qualcomm/emac/emac.c
index 9bf3b2b82e95..e4e1925d18a4 100644
--- a/drivers/net/ethernet/qualcomm/emac/emac.c
+++ b/drivers/net/ethernet/qualcomm/emac/emac.c
@@ -239,15 +239,8 @@ static void emac_rx_mode_set(struct net_device *netdev)
/* Change the Maximum Transfer Unit (MTU) */
static int emac_change_mtu(struct net_device *netdev, int new_mtu)
{
- unsigned int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
struct emac_adapter *adpt = netdev_priv(netdev);
- if ((max_frame < EMAC_MIN_ETH_FRAME_SIZE) ||
- (max_frame > EMAC_MAX_ETH_FRAME_SIZE)) {
- netdev_err(adpt->netdev, "error: invalid MTU setting\n");
- return -EINVAL;
- }
-
netif_info(adpt, hw, adpt->netdev,
"changing MTU from %d to %d\n", netdev->mtu,
new_mtu);
@@ -679,6 +672,12 @@ static int emac_probe(struct platform_device *pdev)
netdev->vlan_features |= NETIF_F_SG | NETIF_F_HW_CSUM |
NETIF_F_TSO | NETIF_F_TSO6;
+ /* MTU range: 46 - 9194 */
+ netdev->min_mtu = EMAC_MIN_ETH_FRAME_SIZE -
+ (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
+ netdev->max_mtu = EMAC_MAX_ETH_FRAME_SIZE -
+ (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
+
INIT_WORK(&adpt->work_thread, emac_work_thread);
/* Initialize queues */
diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
index c688d68c39aa..c9c8a3be9f1b 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
@@ -1034,9 +1034,6 @@ static int axienet_change_mtu(struct net_device *ndev, int new_mtu)
XAE_TRL_SIZE) > lp->rxmem)
return -EINVAL;
- if ((new_mtu > XAE_JUMBO_MTU) || (new_mtu < 64))
- return -EINVAL;
-
ndev->mtu = new_mtu;
return 0;
@@ -1475,6 +1472,10 @@ static int axienet_probe(struct platform_device *pdev)
ndev->netdev_ops = &axienet_netdev_ops;
ndev->ethtool_ops = &axienet_ethtool_ops;
+ /* MTU range: 64 - 9000 */
+ ndev->min_mtu = 64;
+ ndev->max_mtu = XAE_JUMBO_MTU;
+
lp = netdev_priv(ndev);
lp->ndev = ndev;
lp->dev = &pdev->dev;
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