diff options
Diffstat (limited to 'drivers/net')
-rw-r--r-- | drivers/net/dsa/mv88e6xxx/chip.c | 2 | ||||
-rw-r--r-- | drivers/net/ethernet/cadence/macb_main.c | 48 | ||||
-rw-r--r-- | drivers/net/ethernet/cadence/macb_ptp.c | 2 | ||||
-rw-r--r-- | drivers/net/ethernet/marvell/mvneta.c | 6 | ||||
-rw-r--r-- | drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 14 | ||||
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/core.c | 19 | ||||
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/core.h | 3 | ||||
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 8 | ||||
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_nve.c | 2 | ||||
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/trap.h | 1 | ||||
-rw-r--r-- | drivers/net/ethernet/microchip/lan743x_main.c | 5 | ||||
-rw-r--r-- | drivers/net/ethernet/neterion/vxge/vxge-config.c | 2 | ||||
-rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_ll2.c | 1 | ||||
-rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 1 | ||||
-rw-r--r-- | drivers/net/phy/phy_device.c | 7 | ||||
-rw-r--r-- | drivers/net/usb/lan78xx.c | 4 | ||||
-rw-r--r-- | drivers/net/vxlan.c | 21 | ||||
-rw-r--r-- | drivers/net/xen-netfront.c | 2 |
18 files changed, 113 insertions, 35 deletions
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c index e05d4eddc935..24fb6a685039 100644 --- a/drivers/net/dsa/mv88e6xxx/chip.c +++ b/drivers/net/dsa/mv88e6xxx/chip.c @@ -1124,7 +1124,7 @@ static void mv88e6xxx_get_regs(struct dsa_switch *ds, int port, u16 *p = _p; int i; - regs->version = 0; + regs->version = chip->info->prod_num; memset(p, 0xff, 32 * sizeof(u16)); diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c index 1d86b4d5645a..4c816e5a841f 100644 --- a/drivers/net/ethernet/cadence/macb_main.c +++ b/drivers/net/ethernet/cadence/macb_main.c @@ -61,7 +61,8 @@ #define MACB_TX_ERR_FLAGS (MACB_BIT(ISR_TUND) \ | MACB_BIT(ISR_RLE) \ | MACB_BIT(TXERR)) -#define MACB_TX_INT_FLAGS (MACB_TX_ERR_FLAGS | MACB_BIT(TCOMP)) +#define MACB_TX_INT_FLAGS (MACB_TX_ERR_FLAGS | MACB_BIT(TCOMP) \ + | MACB_BIT(TXUBR)) /* Max length of transmit frame must be a multiple of 8 bytes */ #define MACB_TX_LEN_ALIGN 8 @@ -680,6 +681,11 @@ static void macb_set_addr(struct macb *bp, struct macb_dma_desc *desc, dma_addr_ if (bp->hw_dma_cap & HW_DMA_CAP_64B) { desc_64 = macb_64b_desc(bp, desc); desc_64->addrh = upper_32_bits(addr); + /* The low bits of RX address contain the RX_USED bit, clearing + * of which allows packet RX. Make sure the high bits are also + * visible to HW at that point. + */ + dma_wmb(); } #endif desc->addr = lower_32_bits(addr); @@ -928,14 +934,19 @@ static void gem_rx_refill(struct macb_queue *queue) if (entry == bp->rx_ring_size - 1) paddr |= MACB_BIT(RX_WRAP); - macb_set_addr(bp, desc, paddr); desc->ctrl = 0; + /* Setting addr clears RX_USED and allows reception, + * make sure ctrl is cleared first to avoid a race. + */ + dma_wmb(); + macb_set_addr(bp, desc, paddr); /* properly align Ethernet header */ skb_reserve(skb, NET_IP_ALIGN); } else { - desc->addr &= ~MACB_BIT(RX_USED); desc->ctrl = 0; + dma_wmb(); + desc->addr &= ~MACB_BIT(RX_USED); } } @@ -989,11 +1000,15 @@ static int gem_rx(struct macb_queue *queue, int budget) rxused = (desc->addr & MACB_BIT(RX_USED)) ? true : false; addr = macb_get_addr(bp, desc); - ctrl = desc->ctrl; if (!rxused) break; + /* Ensure ctrl is at least as up-to-date as rxused */ + dma_rmb(); + + ctrl = desc->ctrl; + queue->rx_tail++; count++; @@ -1168,11 +1183,14 @@ static int macb_rx(struct macb_queue *queue, int budget) /* Make hw descriptor updates visible to CPU */ rmb(); - ctrl = desc->ctrl; - if (!(desc->addr & MACB_BIT(RX_USED))) break; + /* Ensure ctrl is at least as up-to-date as addr */ + dma_rmb(); + + ctrl = desc->ctrl; + if (ctrl & MACB_BIT(RX_SOF)) { if (first_frag != -1) discard_partial_frame(queue, first_frag, tail); @@ -1312,6 +1330,21 @@ static void macb_hresp_error_task(unsigned long data) netif_tx_start_all_queues(dev); } +static void macb_tx_restart(struct macb_queue *queue) +{ + unsigned int head = queue->tx_head; + unsigned int tail = queue->tx_tail; + struct macb *bp = queue->bp; + + if (bp->caps & MACB_CAPS_ISR_CLEAR_ON_WRITE) + queue_writel(queue, ISR, MACB_BIT(TXUBR)); + + if (head == tail) + return; + + macb_writel(bp, NCR, macb_readl(bp, NCR) | MACB_BIT(TSTART)); +} + static irqreturn_t macb_interrupt(int irq, void *dev_id) { struct macb_queue *queue = dev_id; @@ -1369,6 +1402,9 @@ static irqreturn_t macb_interrupt(int irq, void *dev_id) if (status & MACB_BIT(TCOMP)) macb_tx_interrupt(queue); + if (status & MACB_BIT(TXUBR)) + macb_tx_restart(queue); + /* Link change detection isn't possible with RMII, so we'll * add that if/when we get our hands on a full-blown MII PHY. */ diff --git a/drivers/net/ethernet/cadence/macb_ptp.c b/drivers/net/ethernet/cadence/macb_ptp.c index cd5296b84229..a6dc47edc4cf 100644 --- a/drivers/net/ethernet/cadence/macb_ptp.c +++ b/drivers/net/ethernet/cadence/macb_ptp.c @@ -319,6 +319,8 @@ int gem_ptp_txstamp(struct macb_queue *queue, struct sk_buff *skb, desc_ptp = macb_ptp_desc(queue->bp, desc); tx_timestamp = &queue->tx_timestamps[head]; tx_timestamp->skb = skb; + /* ensure ts_1/ts_2 is loaded after ctrl (TX_USED check) */ + dma_rmb(); tx_timestamp->desc_ptp.ts_1 = desc_ptp->ts_1; tx_timestamp->desc_ptp.ts_2 = desc_ptp->ts_2; /* move head */ diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c index e5397c8197b9..61b23497f836 100644 --- a/drivers/net/ethernet/marvell/mvneta.c +++ b/drivers/net/ethernet/marvell/mvneta.c @@ -408,7 +408,6 @@ struct mvneta_port { struct mvneta_pcpu_stats __percpu *stats; int pkt_size; - unsigned int frag_size; void __iomem *base; struct mvneta_rx_queue *rxqs; struct mvneta_tx_queue *txqs; @@ -2905,7 +2904,9 @@ static void mvneta_rxq_hw_init(struct mvneta_port *pp, if (!pp->bm_priv) { /* Set Offset */ mvneta_rxq_offset_set(pp, rxq, 0); - mvneta_rxq_buf_size_set(pp, rxq, pp->frag_size); + mvneta_rxq_buf_size_set(pp, rxq, PAGE_SIZE < SZ_64K ? + PAGE_SIZE : + MVNETA_RX_BUF_SIZE(pp->pkt_size)); mvneta_rxq_bm_disable(pp, rxq); mvneta_rxq_fill(pp, rxq, rxq->size); } else { @@ -3760,7 +3761,6 @@ static int mvneta_open(struct net_device *dev) int ret; pp->pkt_size = MVNETA_RX_PKT_SIZE(pp->dev->mtu); - pp->frag_size = PAGE_SIZE; ret = mvneta_setup_rxqs(pp); if (ret) diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c index 125ea99418df..88aa488054a8 100644 --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c @@ -4405,12 +4405,14 @@ static void mvpp2_phylink_validate(struct net_device *dev, case PHY_INTERFACE_MODE_10GKR: case PHY_INTERFACE_MODE_XAUI: case PHY_INTERFACE_MODE_NA: - phylink_set(mask, 10000baseCR_Full); - phylink_set(mask, 10000baseSR_Full); - phylink_set(mask, 10000baseLR_Full); - phylink_set(mask, 10000baseLRM_Full); - phylink_set(mask, 10000baseER_Full); - phylink_set(mask, 10000baseKR_Full); + if (port->gop_id == 0) { + phylink_set(mask, 10000baseCR_Full); + phylink_set(mask, 10000baseSR_Full); + phylink_set(mask, 10000baseLR_Full); + phylink_set(mask, 10000baseLRM_Full); + phylink_set(mask, 10000baseER_Full); + phylink_set(mask, 10000baseKR_Full); + } /* Fall-through */ case PHY_INTERFACE_MODE_RGMII: case PHY_INTERFACE_MODE_RGMII_ID: diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c index 30f751e69698..f7154f358f27 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core.c +++ b/drivers/net/ethernet/mellanox/mlxsw/core.c @@ -81,6 +81,7 @@ struct mlxsw_core { struct mlxsw_core_port *ports; unsigned int max_ports; bool reload_fail; + bool fw_flash_in_progress; unsigned long driver_priv[0]; /* driver_priv has to be always the last item */ }; @@ -428,12 +429,16 @@ struct mlxsw_reg_trans { struct rcu_head rcu; }; -#define MLXSW_EMAD_TIMEOUT_MS 200 +#define MLXSW_EMAD_TIMEOUT_DURING_FW_FLASH_MS 3000 +#define MLXSW_EMAD_TIMEOUT_MS 200 static void mlxsw_emad_trans_timeout_schedule(struct mlxsw_reg_trans *trans) { unsigned long timeout = msecs_to_jiffies(MLXSW_EMAD_TIMEOUT_MS); + if (trans->core->fw_flash_in_progress) + timeout = msecs_to_jiffies(MLXSW_EMAD_TIMEOUT_DURING_FW_FLASH_MS); + queue_delayed_work(trans->core->emad_wq, &trans->timeout_dw, timeout); } @@ -1854,6 +1859,18 @@ int mlxsw_core_kvd_sizes_get(struct mlxsw_core *mlxsw_core, } EXPORT_SYMBOL(mlxsw_core_kvd_sizes_get); +void mlxsw_core_fw_flash_start(struct mlxsw_core *mlxsw_core) +{ + mlxsw_core->fw_flash_in_progress = true; +} +EXPORT_SYMBOL(mlxsw_core_fw_flash_start); + +void mlxsw_core_fw_flash_end(struct mlxsw_core *mlxsw_core) +{ + mlxsw_core->fw_flash_in_progress = false; +} +EXPORT_SYMBOL(mlxsw_core_fw_flash_end); + static int __init mlxsw_core_module_init(void) { int err; diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.h b/drivers/net/ethernet/mellanox/mlxsw/core.h index c35be477856f..c4e4971764e5 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core.h +++ b/drivers/net/ethernet/mellanox/mlxsw/core.h @@ -292,6 +292,9 @@ int mlxsw_core_kvd_sizes_get(struct mlxsw_core *mlxsw_core, u64 *p_single_size, u64 *p_double_size, u64 *p_linear_size); +void mlxsw_core_fw_flash_start(struct mlxsw_core *mlxsw_core); +void mlxsw_core_fw_flash_end(struct mlxsw_core *mlxsw_core); + bool mlxsw_core_res_valid(struct mlxsw_core *mlxsw_core, enum mlxsw_res_id res_id); diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index 9bec940330a4..f84b9c02fcc5 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -309,8 +309,13 @@ static int mlxsw_sp_firmware_flash(struct mlxsw_sp *mlxsw_sp, }, .mlxsw_sp = mlxsw_sp }; + int err; + + mlxsw_core_fw_flash_start(mlxsw_sp->core); + err = mlxfw_firmware_flash(&mlxsw_sp_mlxfw_dev.mlxfw_dev, firmware); + mlxsw_core_fw_flash_end(mlxsw_sp->core); - return mlxfw_firmware_flash(&mlxsw_sp_mlxfw_dev.mlxfw_dev, firmware); + return err; } static int mlxsw_sp_fw_rev_validate(struct mlxsw_sp *mlxsw_sp) @@ -3521,6 +3526,7 @@ static const struct mlxsw_listener mlxsw_sp_listener[] = { MLXSW_SP_RXL_MR_MARK(ACL2, TRAP_TO_CPU, MULTICAST, false), /* NVE traps */ MLXSW_SP_RXL_MARK(NVE_ENCAP_ARP, TRAP_TO_CPU, ARP, false), + MLXSW_SP_RXL_NO_MARK(NVE_DECAP_ARP, TRAP_TO_CPU, ARP, false), }; static int mlxsw_sp_cpu_policers_set(struct mlxsw_core *mlxsw_core) diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve.c index 5c13674439f1..b5b54b41349a 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_nve.c @@ -977,6 +977,6 @@ void mlxsw_sp_nve_fini(struct mlxsw_sp *mlxsw_sp) { WARN_ON(mlxsw_sp->nve->num_nve_tunnels); rhashtable_destroy(&mlxsw_sp->nve->mc_list_ht); - mlxsw_sp->nve = NULL; kfree(mlxsw_sp->nve); + mlxsw_sp->nve = NULL; } diff --git a/drivers/net/ethernet/mellanox/mlxsw/trap.h b/drivers/net/ethernet/mellanox/mlxsw/trap.h index 6f18f4d3322a..451216dd7f6b 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/trap.h +++ b/drivers/net/ethernet/mellanox/mlxsw/trap.h @@ -60,6 +60,7 @@ enum { MLXSW_TRAP_ID_IPV6_MC_LINK_LOCAL_DEST = 0x91, MLXSW_TRAP_ID_HOST_MISS_IPV6 = 0x92, MLXSW_TRAP_ID_IPIP_DECAP_ERROR = 0xB1, + MLXSW_TRAP_ID_NVE_DECAP_ARP = 0xB8, MLXSW_TRAP_ID_NVE_ENCAP_ARP = 0xBD, MLXSW_TRAP_ID_ROUTER_ALERT_IPV4 = 0xD6, MLXSW_TRAP_ID_ROUTER_ALERT_IPV6 = 0xD7, diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c index e8ca98c070f6..1ba8ea07dc4f 100644 --- a/drivers/net/ethernet/microchip/lan743x_main.c +++ b/drivers/net/ethernet/microchip/lan743x_main.c @@ -2719,8 +2719,9 @@ static int lan743x_mdiobus_init(struct lan743x_adapter *adapter) snprintf(adapter->mdiobus->id, MII_BUS_ID_SIZE, "pci-%s", pci_name(adapter->pdev)); - /* set to internal PHY id */ - adapter->mdiobus->phy_mask = ~(u32)BIT(1); + if ((adapter->csr.id_rev & ID_REV_ID_MASK_) == ID_REV_ID_LAN7430_) + /* LAN7430 uses internal phy at address 1 */ + adapter->mdiobus->phy_mask = ~(u32)BIT(1); /* register mdiobus */ ret = mdiobus_register(adapter->mdiobus); diff --git a/drivers/net/ethernet/neterion/vxge/vxge-config.c b/drivers/net/ethernet/neterion/vxge/vxge-config.c index 4c1fb7e57888..7cde387e5ec6 100644 --- a/drivers/net/ethernet/neterion/vxge/vxge-config.c +++ b/drivers/net/ethernet/neterion/vxge/vxge-config.c @@ -808,7 +808,7 @@ __vxge_hw_vpath_fw_ver_get(struct __vxge_hw_virtualpath *vpath, struct vxge_hw_device_date *fw_date = &hw_info->fw_date; struct vxge_hw_device_version *flash_version = &hw_info->flash_version; struct vxge_hw_device_date *flash_date = &hw_info->flash_date; - u64 data0, data1 = 0, steer_ctrl = 0; + u64 data0 = 0, data1 = 0, steer_ctrl = 0; enum vxge_hw_status status; status = vxge_hw_vpath_fw_api(vpath, diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c index aa633381aa47..c6f4bab67a5f 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c +++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c @@ -2496,6 +2496,7 @@ static int qed_ll2_start_xmit(struct qed_dev *cdev, struct sk_buff *skb, if (unlikely(dma_mapping_error(&cdev->pdev->dev, mapping))) { DP_NOTICE(cdev, "Unable to map frag - dropping packet\n"); + rc = -ENOMEM; goto err; } diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 5551fead8f66..c4a35e932f05 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -4250,6 +4250,7 @@ int stmmac_dvr_probe(struct device *device, priv->wq = create_singlethread_workqueue("stmmac_wq"); if (!priv->wq) { dev_err(priv->device, "failed to create workqueue\n"); + ret = -ENOMEM; goto error_wq; } diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 18e92c19c5ab..26c41ede54a4 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -308,11 +308,8 @@ static int mdio_bus_phy_restore(struct device *dev) if (ret < 0) return ret; - /* The PHY needs to renegotiate. */ - phydev->link = 0; - phydev->state = PHY_UP; - - phy_start_machine(phydev); + if (phydev->attached_dev && phydev->adjust_link) + phy_start_machine(phydev); return 0; } diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c index be1917be28f2..77d3c85febf1 100644 --- a/drivers/net/usb/lan78xx.c +++ b/drivers/net/usb/lan78xx.c @@ -2320,6 +2320,10 @@ static int lan78xx_set_mac_addr(struct net_device *netdev, void *p) ret = lan78xx_write_reg(dev, RX_ADDRL, addr_lo); ret = lan78xx_write_reg(dev, RX_ADDRH, addr_hi); + /* Added to support MAC address changes */ + ret = lan78xx_write_reg(dev, MAF_LO(0), addr_lo); + ret = lan78xx_write_reg(dev, MAF_HI(0), addr_hi | MAF_HI_VALID_); + return 0; } diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 297cdeaef479..0565f8880199 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -568,6 +568,7 @@ static int vxlan_fdb_replace(struct vxlan_fdb *f, rd->remote_port = port; rd->remote_vni = vni; rd->remote_ifindex = ifindex; + rd->offloaded = false; return 1; } @@ -3258,6 +3259,7 @@ static int __vxlan_dev_create(struct net *net, struct net_device *dev, struct vxlan_net *vn = net_generic(net, vxlan_net_id); struct vxlan_dev *vxlan = netdev_priv(dev); struct vxlan_fdb *f = NULL; + bool unregister = false; int err; err = vxlan_dev_configure(net, dev, conf, false, extack); @@ -3283,12 +3285,11 @@ static int __vxlan_dev_create(struct net *net, struct net_device *dev, err = register_netdevice(dev); if (err) goto errout; + unregister = true; err = rtnl_configure_link(dev, NULL); - if (err) { - unregister_netdevice(dev); + if (err) goto errout; - } /* notify default fdb entry */ if (f) @@ -3296,9 +3297,16 @@ static int __vxlan_dev_create(struct net *net, struct net_device *dev, list_add(&vxlan->next, &vn->vxlan_list); return 0; + errout: + /* unregister_netdevice() destroys the default FDB entry with deletion + * notification. But the addition notification was not sent yet, so + * destroy the entry by hand here. + */ if (f) vxlan_fdb_destroy(vxlan, f, false); + if (unregister) + unregister_netdevice(dev); return err; } @@ -3534,7 +3542,6 @@ static int vxlan_changelink(struct net_device *dev, struct nlattr *tb[], struct vxlan_rdst *dst = &vxlan->default_dst; struct vxlan_rdst old_dst; struct vxlan_config conf; - struct vxlan_fdb *f = NULL; int err; err = vxlan_nl2conf(tb, data, @@ -3560,19 +3567,19 @@ static int vxlan_changelink(struct net_device *dev, struct nlattr *tb[], old_dst.remote_ifindex, 0); if (!vxlan_addr_any(&dst->remote_ip)) { - err = vxlan_fdb_create(vxlan, all_zeros_mac, + err = vxlan_fdb_update(vxlan, all_zeros_mac, &dst->remote_ip, NUD_REACHABLE | NUD_PERMANENT, + NLM_F_APPEND | NLM_F_CREATE, vxlan->cfg.dst_port, dst->remote_vni, dst->remote_vni, dst->remote_ifindex, - NTF_SELF, &f); + NTF_SELF); if (err) { spin_unlock_bh(&vxlan->hash_lock); return err; } - vxlan_fdb_notify(vxlan, f, first_remote_rtnl(f), RTM_NEWNEIGH); } spin_unlock_bh(&vxlan->hash_lock); } diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c index f17f602e6171..5b97cc946d70 100644 --- a/drivers/net/xen-netfront.c +++ b/drivers/net/xen-netfront.c @@ -905,7 +905,7 @@ static RING_IDX xennet_fill_frags(struct netfront_queue *queue, if (skb_shinfo(skb)->nr_frags == MAX_SKB_FRAGS) { unsigned int pull_to = NETFRONT_SKB_CB(skb)->pull_to; - BUG_ON(pull_to <= skb_headlen(skb)); + BUG_ON(pull_to < skb_headlen(skb)); __pskb_pull_tail(skb, pull_to - skb_headlen(skb)); } if (unlikely(skb_shinfo(skb)->nr_frags >= MAX_SKB_FRAGS)) { |