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authorJarod Wilson <jarod@redhat.com>2016-10-17 15:54:17 -0400
committerDavid S. Miller <davem@davemloft.net>2016-10-18 11:34:22 -0400
commit44770e1180decf9b483d9b537fdad385a4fbf462 (patch)
tree97dff06ab97f91387a88de2dfb3c6d959609d321 /drivers/net/ethernet/cadence
parent1281a2c7b814cf5ccdafa49c1410dd5092da0542 (diff)
ethernet: use core min/max MTU checking
et131x: min_mtu 64, max_mtu 9216 altera_tse: min_mtu 64, max_mtu 1500 amd8111e: min_mtu 60, max_mtu 9000 bnad: min_mtu 46, max_mtu 9000 macb: min_mtu 68, max_mtu 1500 or 10240 depending on hardware capability xgmac: min_mtu 46, max_mtu 9000 cxgb2: min_mtu 68, max_mtu 9582 (pm3393) or 9600 (vsc7326) enic: min_mtu 68, max_mtu 9000 gianfar: min_mtu 50, max_mu 9586 hns_enet: min_mtu 68, max_mtu 9578 (v1) or 9706 (v2) ksz884x: min_mtu 60, max_mtu 1894 myri10ge: min_mtu 68, max_mtu 9000 natsemi: min_mtu 64, max_mtu 2024 nfp: min_mtu 68, max_mtu hardware-specific forcedeth: min_mtu 64, max_mtu 1500 or 9100, depending on hardware pch_gbe: min_mtu 46, max_mtu 10300 pasemi_mac: min_mtu 64, max_mtu 9000 qcaspi: min_mtu 46, max_mtu 1500 - remove qcaspi_netdev_change_mtu as it is now redundant rocker: min_mtu 68, max_mtu 9000 sxgbe: min_mtu 68, max_mtu 9000 stmmac: min_mtu 46, max_mtu depends on hardware tehuti: min_mtu 60, max_mtu 16384 - driver had no max mtu checking, but product docs say 16k jumbo packets are supported by the hardware netcp: min_mtu 68, max_mtu 9486 - remove netcp_ndo_change_mtu as it is now redundant via-velocity: min_mtu 64, max_mtu 9000 octeon: min_mtu 46, max_mtu 65370 CC: netdev@vger.kernel.org CC: Mark Einon <mark.einon@gmail.com> CC: Vince Bridgers <vbridger@opensource.altera.com> CC: Rasesh Mody <rasesh.mody@qlogic.com> CC: Nicolas Ferre <nicolas.ferre@atmel.com> CC: Santosh Raspatur <santosh@chelsio.com> CC: Hariprasad S <hariprasad@chelsio.com> CC: Christian Benvenuti <benve@cisco.com> CC: Sujith Sankar <ssujith@cisco.com> CC: Govindarajulu Varadarajan <_govind@gmx.com> CC: Neel Patel <neepatel@cisco.com> CC: Claudiu Manoil <claudiu.manoil@freescale.com> CC: Yisen Zhuang <yisen.zhuang@huawei.com> CC: Salil Mehta <salil.mehta@huawei.com> CC: Hyong-Youb Kim <hykim@myri.com> CC: Jakub Kicinski <jakub.kicinski@netronome.com> CC: Olof Johansson <olof@lixom.net> CC: Jiri Pirko <jiri@resnulli.us> CC: Byungho An <bh74.an@samsung.com> CC: Girish K S <ks.giri@samsung.com> CC: Vipul Pandya <vipul.pandya@samsung.com> CC: Giuseppe Cavallaro <peppe.cavallaro@st.com> CC: Alexandre Torgue <alexandre.torgue@st.com> CC: Andy Gospodarek <andy@greyhouse.net> CC: Wingman Kwok <w-kwok2@ti.com> CC: Murali Karicheri <m-karicheri2@ti.com> CC: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/cadence')
-rw-r--r--drivers/net/ethernet/cadence/macb.c19
1 files changed, 8 insertions, 11 deletions
diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c
index 20e72044b765..e83781ad4477 100644
--- a/drivers/net/ethernet/cadence/macb.c
+++ b/drivers/net/ethernet/cadence/macb.c
@@ -56,7 +56,7 @@
#define MACB_MAX_TX_LEN ((unsigned int)((1 << MACB_TX_FRMLEN_SIZE) - 1))
#define GEM_MAX_TX_LEN ((unsigned int)((1 << GEM_TX_FRMLEN_SIZE) - 1))
-#define GEM_MTU_MIN_SIZE 68
+#define GEM_MTU_MIN_SIZE ETH_MIN_MTU
#define MACB_WOL_HAS_MAGIC_PACKET (0x1 << 0)
#define MACB_WOL_ENABLED (0x1 << 1)
@@ -1986,19 +1986,9 @@ static int macb_close(struct net_device *dev)
static int macb_change_mtu(struct net_device *dev, int new_mtu)
{
- struct macb *bp = netdev_priv(dev);
- u32 max_mtu;
-
if (netif_running(dev))
return -EBUSY;
- max_mtu = ETH_DATA_LEN;
- if (bp->caps & MACB_CAPS_JUMBO)
- max_mtu = gem_readl(bp, JML) - ETH_HLEN - ETH_FCS_LEN;
-
- if ((new_mtu > max_mtu) || (new_mtu < GEM_MTU_MIN_SIZE))
- return -EINVAL;
-
dev->mtu = new_mtu;
return 0;
@@ -3027,6 +3017,13 @@ static int macb_probe(struct platform_device *pdev)
goto err_out_free_netdev;
}
+ /* MTU range: 68 - 1500 or 10240 */
+ dev->min_mtu = GEM_MTU_MIN_SIZE;
+ if (bp->caps & MACB_CAPS_JUMBO)
+ dev->max_mtu = gem_readl(bp, JML) - ETH_HLEN - ETH_FCS_LEN;
+ else
+ dev->max_mtu = ETH_DATA_LEN;
+
mac = of_get_mac_address(np);
if (mac)
ether_addr_copy(bp->dev->dev_addr, mac);