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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/net/ethernet/ibm
parent1a61a8f1776758acb5111785c8a1688394fa3a60 (diff)
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/net/ethernet/ibm')
-rw-r--r--drivers/net/ethernet/ibm/ibmveth.c6
-rw-r--r--drivers/net/ethernet/ibm/ibmvnic.c16
2 files changed, 7 insertions, 15 deletions
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;