From e1c6dccaf3af291488fbad155d7ee6bc29db262a Mon Sep 17 00:00:00 2001 From: Jarod Wilson Date: Mon, 17 Oct 2016 15:54:04 -0400 Subject: [PATCH] ethernet/broadcom: use core min/max MTU checking tg3: min_mtu 60, max_mtu 9000/1500 bnxt: min_mtu 60, max_mtu 9000 bnx2x: min_mtu 46, max_mtu 9600 - Fix up ETH_OVREHEAD -> ETH_OVERHEAD while we're in here, remove duplicated defines from bnx2x_link.c. bnx2: min_mtu 46, max_mtu 9000 - Use more standard ETH_* defines while we're at it. bcm63xx_enet: min_mtu 46, max_mtu 2028 - compute_hw_mtu was made largely pointless, and thus merged back into bcm_enet_change_mtu. b44: min_mtu 60, max_mtu 1500 CC: netdev@vger.kernel.org CC: Michael Chan CC: Sony Chacko CC: Ariel Elior CC: Dept-HSGLinuxNICDev@qlogic.com CC: Siva Reddy Kallam CC: Prashant Sreedharan Signed-off-by: Jarod Wilson Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/b44.c | 9 +++--- drivers/net/ethernet/broadcom/bcm63xx_enet.c | 35 ++++++++---------------- drivers/net/ethernet/broadcom/bnx2.c | 16 +++++------ drivers/net/ethernet/broadcom/bnx2.h | 6 ++-- drivers/net/ethernet/broadcom/bnx2x/bnx2x.h | 6 ++-- drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c | 8 +----- drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c | 22 ++++++--------- drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 7 +++-- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 7 +++-- drivers/net/ethernet/broadcom/tg3.c | 9 +++--- 10 files changed, 51 insertions(+), 74 deletions(-) diff --git a/drivers/net/ethernet/broadcom/b44.c b/drivers/net/ethernet/broadcom/b44.c index 17aa33c..1df3048 100644 --- a/drivers/net/ethernet/broadcom/b44.c +++ b/drivers/net/ethernet/broadcom/b44.c @@ -59,8 +59,8 @@ #define B44_TX_TIMEOUT (5 * HZ) /* hardware minimum and maximum for a single frame's data payload */ -#define B44_MIN_MTU 60 -#define B44_MAX_MTU 1500 +#define B44_MIN_MTU ETH_ZLEN +#define B44_MAX_MTU ETH_DATA_LEN #define B44_RX_RING_SIZE 512 #define B44_DEF_RX_RING_PENDING 200 @@ -1064,9 +1064,6 @@ static int b44_change_mtu(struct net_device *dev, int new_mtu) { struct b44 *bp = netdev_priv(dev); - if (new_mtu < B44_MIN_MTU || new_mtu > B44_MAX_MTU) - return -EINVAL; - if (!netif_running(dev)) { /* We'll just catch it later when the * device is up'd. @@ -2377,6 +2374,8 @@ static int b44_init_one(struct ssb_device *sdev, dev->netdev_ops = &b44_netdev_ops; netif_napi_add(dev, &bp->napi, b44_poll, 64); dev->watchdog_timeo = B44_TX_TIMEOUT; + dev->min_mtu = B44_MIN_MTU; + dev->max_mtu = B44_MAX_MTU; dev->irq = sdev->irq; dev->ethtool_ops = &b44_ethtool_ops; diff --git a/drivers/net/ethernet/broadcom/bcm63xx_enet.c b/drivers/net/ethernet/broadcom/bcm63xx_enet.c index ae364c7..7e513cac 100644 --- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c +++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c @@ -1622,20 +1622,19 @@ static int bcm_enet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) } /* - * calculate actual hardware mtu + * adjust mtu, can't be called while device is running */ -static int compute_hw_mtu(struct bcm_enet_priv *priv, int mtu) +static int bcm_enet_change_mtu(struct net_device *dev, int new_mtu) { - int actual_mtu; + struct bcm_enet_priv *priv = netdev_priv(dev); + int actual_mtu = new_mtu; - actual_mtu = mtu; + if (netif_running(dev)) + return -EBUSY; /* add ethernet header + vlan tag size */ actual_mtu += VLAN_ETH_HLEN; - if (actual_mtu < 64 || actual_mtu > BCMENET_MAX_MTU) - return -EINVAL; - /* * setup maximum size before we get overflow mark in * descriptor, note that this will not prevent reception of @@ -1650,22 +1649,7 @@ static int compute_hw_mtu(struct bcm_enet_priv *priv, int mtu) */ priv->rx_skb_size = ALIGN(actual_mtu + ETH_FCS_LEN, priv->dma_maxburst * 4); - return 0; -} -/* - * adjust mtu, can't be called while device is running - */ -static int bcm_enet_change_mtu(struct net_device *dev, int new_mtu) -{ - int ret; - - if (netif_running(dev)) - return -EBUSY; - - ret = compute_hw_mtu(netdev_priv(dev), new_mtu); - if (ret) - return ret; dev->mtu = new_mtu; return 0; } @@ -1755,7 +1739,7 @@ static int bcm_enet_probe(struct platform_device *pdev) priv->enet_is_sw = false; priv->dma_maxburst = BCMENET_DMA_MAXBURST; - ret = compute_hw_mtu(priv, dev->mtu); + ret = bcm_enet_change_mtu(dev, dev->mtu); if (ret) goto out; @@ -1888,6 +1872,9 @@ static int bcm_enet_probe(struct platform_device *pdev) netif_napi_add(dev, &priv->napi, bcm_enet_poll, 16); dev->ethtool_ops = &bcm_enet_ethtool_ops; + /* MTU range: 46 - 2028 */ + dev->min_mtu = ETH_ZLEN - ETH_HLEN; + dev->max_mtu = BCMENET_MAX_MTU - VLAN_ETH_HLEN; SET_NETDEV_DEV(dev, &pdev->dev); ret = register_netdev(dev); @@ -2742,7 +2729,7 @@ static int bcm_enetsw_probe(struct platform_device *pdev) priv->dma_chan_width = pd->dma_chan_width; } - ret = compute_hw_mtu(priv, dev->mtu); + ret = bcm_enet_change_mtu(dev, dev->mtu); if (ret) goto out; diff --git a/drivers/net/ethernet/broadcom/bnx2.c b/drivers/net/ethernet/broadcom/bnx2.c index 27f11a5..2a5df3f 100644 --- a/drivers/net/ethernet/broadcom/bnx2.c +++ b/drivers/net/ethernet/broadcom/bnx2.c @@ -2298,7 +2298,7 @@ bnx2_init_5706s_phy(struct bnx2 *bp, int reset_phy) if (BNX2_CHIP(bp) == BNX2_CHIP_5706) BNX2_WR(bp, BNX2_MISC_GP_HW_CTL0, 0x300); - if (bp->dev->mtu > 1500) { + if (bp->dev->mtu > ETH_DATA_LEN) { u32 val; /* Set extended packet length bit */ @@ -2352,7 +2352,7 @@ bnx2_init_copper_phy(struct bnx2 *bp, int reset_phy) bnx2_write_phy(bp, MII_BNX2_DSP_RW_PORT, val); } - if (bp->dev->mtu > 1500) { + if (bp->dev->mtu > ETH_DATA_LEN) { /* Set extended packet length bit */ bnx2_write_phy(bp, 0x18, 0x7); bnx2_read_phy(bp, 0x18, &val); @@ -4985,12 +4985,12 @@ bnx2_init_chip(struct bnx2 *bp) /* Program the MTU. Also include 4 bytes for CRC32. */ mtu = bp->dev->mtu; val = mtu + ETH_HLEN + ETH_FCS_LEN; - if (val > (MAX_ETHERNET_PACKET_SIZE + 4)) + if (val > (MAX_ETHERNET_PACKET_SIZE + ETH_HLEN + 4)) val |= BNX2_EMAC_RX_MTU_SIZE_JUMBO_ENA; BNX2_WR(bp, BNX2_EMAC_RX_MTU_SIZE, val); - if (mtu < 1500) - mtu = 1500; + if (mtu < ETH_DATA_LEN) + mtu = ETH_DATA_LEN; bnx2_reg_wr_ind(bp, BNX2_RBUF_CONFIG, BNX2_RBUF_CONFIG_VAL(mtu)); bnx2_reg_wr_ind(bp, BNX2_RBUF_CONFIG2, BNX2_RBUF_CONFIG2_VAL(mtu)); @@ -7896,10 +7896,6 @@ bnx2_change_mtu(struct net_device *dev, int new_mtu) { struct bnx2 *bp = netdev_priv(dev); - if (((new_mtu + ETH_HLEN) > MAX_ETHERNET_JUMBO_PACKET_SIZE) || - ((new_mtu + ETH_HLEN) < MIN_ETHERNET_PACKET_SIZE)) - return -EINVAL; - dev->mtu = new_mtu; return bnx2_change_ring_size(bp, bp->rx_ring_size, bp->tx_ring_size, false); @@ -8589,6 +8585,8 @@ bnx2_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) dev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; dev->features |= dev->hw_features; dev->priv_flags |= IFF_UNICAST_FLT; + dev->min_mtu = MIN_ETHERNET_PACKET_SIZE; + dev->max_mtu = MAX_ETHERNET_JUMBO_PACKET_SIZE; if (!(bp->flags & BNX2_FLAG_CAN_KEEP_VLAN)) dev->hw_features &= ~NETIF_F_HW_VLAN_CTAG_RX; diff --git a/drivers/net/ethernet/broadcom/bnx2.h b/drivers/net/ethernet/broadcom/bnx2.h index 380234d..a09ec47 100644 --- a/drivers/net/ethernet/broadcom/bnx2.h +++ b/drivers/net/ethernet/broadcom/bnx2.h @@ -6530,9 +6530,9 @@ struct l2_fhdr { #define MII_BNX2_AER_AER_AN_MMD 0x3800 #define MII_BNX2_BLK_ADDR_COMBO_IEEEB0 0xffe0 -#define MIN_ETHERNET_PACKET_SIZE 60 -#define MAX_ETHERNET_PACKET_SIZE 1514 -#define MAX_ETHERNET_JUMBO_PACKET_SIZE 9014 +#define MIN_ETHERNET_PACKET_SIZE (ETH_ZLEN - ETH_HLEN) +#define MAX_ETHERNET_PACKET_SIZE ETH_DATA_LEN +#define MAX_ETHERNET_JUMBO_PACKET_SIZE 9000 #define BNX2_RX_COPY_THRESH 128 diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h index 7dd7490..0a23034 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h @@ -1396,9 +1396,9 @@ struct bnx2x { int tx_ring_size; /* L2 header size + 2*VLANs (8 bytes) + LLC SNAP (8 bytes) */ -#define ETH_OVREHEAD (ETH_HLEN + 8 + 8) -#define ETH_MIN_PACKET_SIZE 60 -#define ETH_MAX_PACKET_SIZE 1500 +#define ETH_OVERHEAD (ETH_HLEN + 8 + 8) +#define ETH_MIN_PACKET_SIZE (ETH_ZLEN - ETH_HLEN) +#define ETH_MAX_PACKET_SIZE ETH_DATA_LEN #define ETH_MAX_JUMBO_PACKET_SIZE 9600 /* TCP with Timestamp Option (32) + IPv6 (40) */ #define ETH_MAX_TPA_HEADER_SIZE 72 diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c index 0a9108c..ed42c10 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c @@ -2023,7 +2023,7 @@ static void bnx2x_set_rx_buf_size(struct bnx2x *bp) mtu = bp->dev->mtu; fp->rx_buf_size = BNX2X_FW_RX_ALIGN_START + IP_HEADER_ALIGNMENT_PADDING + - ETH_OVREHEAD + + ETH_OVERHEAD + mtu + BNX2X_FW_RX_ALIGN_END; /* Note : rx_buf_size doesn't take into account NET_SKB_PAD */ @@ -4855,12 +4855,6 @@ int bnx2x_change_mtu(struct net_device *dev, int new_mtu) return -EAGAIN; } - if ((new_mtu > ETH_MAX_JUMBO_PACKET_SIZE) || - ((new_mtu + ETH_HLEN) < ETH_MIN_PACKET_SIZE)) { - BNX2X_ERR("Can't support requested MTU size\n"); - return -EINVAL; - } - /* This does not race with packet allocation * because the actual alloc size is * only updated as part of load diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c index 1fb8010..05356ef 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c @@ -34,12 +34,6 @@ typedef int (*read_sfp_module_eeprom_func_p)(struct bnx2x_phy *phy, u8 dev_addr, u16 addr, u8 byte_cnt, u8 *o_buf, u8); /********************************************************/ -#define ETH_HLEN 14 -/* L2 header size + 2*VLANs (8 bytes) + LLC SNAP (8 bytes) */ -#define ETH_OVREHEAD (ETH_HLEN + 8 + 8) -#define ETH_MIN_PACKET_SIZE 60 -#define ETH_MAX_PACKET_SIZE 1500 -#define ETH_MAX_JUMBO_PACKET_SIZE 9600 #define MDIO_ACCESS_TIMEOUT 1000 #define WC_LANE_MAX 4 #define I2C_SWITCH_WIDTH 2 @@ -1917,7 +1911,7 @@ static int bnx2x_emac_enable(struct link_params *params, /* Enable emac for jumbo packets */ EMAC_WR(bp, EMAC_REG_EMAC_RX_MTU_SIZE, (EMAC_RX_MTU_SIZE_JUMBO_ENA | - (ETH_MAX_JUMBO_PACKET_SIZE + ETH_OVREHEAD))); + (ETH_MAX_JUMBO_PACKET_SIZE + ETH_OVERHEAD))); /* Strip CRC */ REG_WR(bp, NIG_REG_NIG_INGRESS_EMAC0_NO_CRC + port*4, 0x1); @@ -2314,19 +2308,19 @@ static int bnx2x_bmac1_enable(struct link_params *params, REG_WR_DMAE(bp, bmac_addr + BIGMAC_REGISTER_BMAC_CONTROL, wb_data, 2); /* Set rx mtu */ - wb_data[0] = ETH_MAX_JUMBO_PACKET_SIZE + ETH_OVREHEAD; + wb_data[0] = ETH_MAX_JUMBO_PACKET_SIZE + ETH_OVERHEAD; wb_data[1] = 0; REG_WR_DMAE(bp, bmac_addr + BIGMAC_REGISTER_RX_MAX_SIZE, wb_data, 2); bnx2x_update_pfc_bmac1(params, vars); /* Set tx mtu */ - wb_data[0] = ETH_MAX_JUMBO_PACKET_SIZE + ETH_OVREHEAD; + wb_data[0] = ETH_MAX_JUMBO_PACKET_SIZE + ETH_OVERHEAD; wb_data[1] = 0; REG_WR_DMAE(bp, bmac_addr + BIGMAC_REGISTER_TX_MAX_SIZE, wb_data, 2); /* Set cnt max size */ - wb_data[0] = ETH_MAX_JUMBO_PACKET_SIZE + ETH_OVREHEAD; + wb_data[0] = ETH_MAX_JUMBO_PACKET_SIZE + ETH_OVERHEAD; wb_data[1] = 0; REG_WR_DMAE(bp, bmac_addr + BIGMAC_REGISTER_CNT_MAX_SIZE, wb_data, 2); @@ -2384,18 +2378,18 @@ static int bnx2x_bmac2_enable(struct link_params *params, udelay(30); /* Set RX MTU */ - wb_data[0] = ETH_MAX_JUMBO_PACKET_SIZE + ETH_OVREHEAD; + wb_data[0] = ETH_MAX_JUMBO_PACKET_SIZE + ETH_OVERHEAD; wb_data[1] = 0; REG_WR_DMAE(bp, bmac_addr + BIGMAC2_REGISTER_RX_MAX_SIZE, wb_data, 2); udelay(30); /* Set TX MTU */ - wb_data[0] = ETH_MAX_JUMBO_PACKET_SIZE + ETH_OVREHEAD; + wb_data[0] = ETH_MAX_JUMBO_PACKET_SIZE + ETH_OVERHEAD; wb_data[1] = 0; REG_WR_DMAE(bp, bmac_addr + BIGMAC2_REGISTER_TX_MAX_SIZE, wb_data, 2); udelay(30); /* Set cnt max size */ - wb_data[0] = ETH_MAX_JUMBO_PACKET_SIZE + ETH_OVREHEAD - 2; + wb_data[0] = ETH_MAX_JUMBO_PACKET_SIZE + ETH_OVERHEAD - 2; wb_data[1] = 0; REG_WR_DMAE(bp, bmac_addr + BIGMAC2_REGISTER_CNT_MAX_SIZE, wb_data, 2); udelay(30); @@ -2516,7 +2510,7 @@ static int bnx2x_pbf_update(struct link_params *params, u32 flow_ctrl, } else { u32 thresh = (ETH_MAX_JUMBO_PACKET_SIZE + - ETH_OVREHEAD)/16; + ETH_OVERHEAD)/16; REG_WR(bp, PBF_REG_P0_PAUSE_ENABLE + port*4, 0); /* Update threshold */ REG_WR(bp, PBF_REG_P0_ARB_THRSH + port*4, thresh); diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c index 20fe6a8..67b6180 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c @@ -12080,8 +12080,7 @@ static int bnx2x_get_hwinfo(struct bnx2x *bp) mtu_size, mtu); /* if valid: update device mtu */ - if (((mtu_size + ETH_HLEN) >= - ETH_MIN_PACKET_SIZE) && + if ((mtu_size >= ETH_MIN_PACKET_SIZE) && (mtu_size <= ETH_MAX_JUMBO_PACKET_SIZE)) bp->dev->mtu = mtu_size; @@ -13315,6 +13314,10 @@ static int bnx2x_init_dev(struct bnx2x *bp, struct pci_dev *pdev, dev->dcbnl_ops = &bnx2x_dcbnl_ops; #endif + /* MTU range, 46 - 9600 */ + dev->min_mtu = ETH_MIN_PACKET_SIZE; + dev->max_mtu = ETH_MAX_JUMBO_PACKET_SIZE; + /* get_port_hwinfo() will set prtad and mmds properly */ bp->mdio.prtad = MDIO_PRTAD_NONE; bp->mdio.mmds = 0; diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index a9f9f37..a042da1 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -6290,9 +6290,6 @@ static int bnxt_change_mtu(struct net_device *dev, int new_mtu) { struct bnxt *bp = netdev_priv(dev); - if (new_mtu < 60 || new_mtu > 9500) - return -EINVAL; - if (netif_running(dev)) bnxt_close_nic(bp, false, false); @@ -6870,6 +6867,10 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) dev->features |= dev->hw_features | NETIF_F_HIGHDMA; dev->priv_flags |= IFF_UNICAST_FLT; + /* MTU range: 60 - 9500 */ + dev->min_mtu = ETH_ZLEN; + dev->max_mtu = 9500; + #ifdef CONFIG_BNXT_SRIOV init_waitqueue_head(&bp->sriov_cfg_wait); #endif diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index a927a73..185e9e0 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -124,7 +124,7 @@ static inline void _tg3_flag_clear(enum TG3_FLAGS flag, unsigned long *bits) #define TG3_TX_TIMEOUT (5 * HZ) /* hardware minimum and maximum for a single frame's data payload */ -#define TG3_MIN_MTU 60 +#define TG3_MIN_MTU ETH_ZLEN #define TG3_MAX_MTU(tp) \ (tg3_flag(tp, JUMBO_CAPABLE) ? 9000 : 1500) @@ -14199,9 +14199,6 @@ static int tg3_change_mtu(struct net_device *dev, int new_mtu) int err; bool reset_phy = false; - if (new_mtu < TG3_MIN_MTU || new_mtu > TG3_MAX_MTU(tp)) - return -EINVAL; - if (!netif_running(dev)) { /* We'll just catch it later when the * device is up'd. @@ -17799,6 +17796,10 @@ static int tg3_init_one(struct pci_dev *pdev, dev->hw_features |= features; dev->priv_flags |= IFF_UNICAST_FLT; + /* MTU range: 60 - 9000 or 1500, depending on hardware */ + dev->min_mtu = TG3_MIN_MTU; + dev->max_mtu = TG3_MAX_MTU(tp); + if (tg3_chip_rev_id(tp) == CHIPREV_ID_5705_A1 && !tg3_flag(tp, TSO_CAPABLE) && !(tr32(TG3PCI_PCISTATE) & PCISTATE_BUS_SPEED_HIGH)) { -- 2.7.4