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path: root/drivers/net/ethernet/intel/e100.c
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Diffstat (limited to 'drivers/net/ethernet/intel/e100.c')
-rw-r--r--drivers/net/ethernet/intel/e100.c84
1 files changed, 73 insertions, 11 deletions
diff --git a/drivers/net/ethernet/intel/e100.c b/drivers/net/ethernet/intel/e100.c
index 9436397e5725..e498effb85d9 100644
--- a/drivers/net/ethernet/intel/e100.c
+++ b/drivers/net/ethernet/intel/e100.c
@@ -412,6 +412,10 @@ enum cb_status {
cb_ok = 0x2000,
};
+/**
+ * cb_command - Command Block flags
+ * @cb_tx_nc: 0: controler does CRC (normal), 1: CRC from skb memory
+ */
enum cb_command {
cb_nop = 0x0000,
cb_iaaddr = 0x0001,
@@ -421,6 +425,7 @@ enum cb_command {
cb_ucode = 0x0005,
cb_dump = 0x0006,
cb_tx_sf = 0x0008,
+ cb_tx_nc = 0x0010,
cb_cid = 0x1f00,
cb_i = 0x2000,
cb_s = 0x4000,
@@ -457,7 +462,7 @@ struct config {
/*5*/ u8 X(tx_dma_max_count:7, dma_max_count_enable:1);
/*6*/ u8 X(X(X(X(X(X(X(late_scb_update:1, direct_rx_dma:1),
tno_intr:1), cna_intr:1), standard_tcb:1), standard_stat_counter:1),
- rx_discard_overruns:1), rx_save_bad_frames:1);
+ rx_save_overruns : 1), rx_save_bad_frames : 1);
/*7*/ u8 X(X(X(X(X(rx_discard_short_frames:1, tx_underrun_retry:2),
pad7:2), rx_extended_rfd:1), tx_two_frames_in_fifo:1),
tx_dynamic_tbd:1);
@@ -617,6 +622,7 @@ struct nic {
u32 rx_fc_pause;
u32 rx_fc_unsupported;
u32 rx_tco_frames;
+ u32 rx_short_frame_errors;
u32 rx_over_length_errors;
u16 eeprom_wc;
@@ -1075,7 +1081,7 @@ static void e100_get_defaults(struct nic *nic)
/* Template for a freshly allocated RFD */
nic->blank_rfd.command = 0;
nic->blank_rfd.rbd = cpu_to_le32(0xFFFFFFFF);
- nic->blank_rfd.size = cpu_to_le16(VLAN_ETH_FRAME_LEN);
+ nic->blank_rfd.size = cpu_to_le16(VLAN_ETH_FRAME_LEN + ETH_FCS_LEN);
/* MII setup */
nic->mii.phy_id_mask = 0x1F;
@@ -1089,6 +1095,7 @@ static void e100_configure(struct nic *nic, struct cb *cb, struct sk_buff *skb)
{
struct config *config = &cb->u.config;
u8 *c = (u8 *)config;
+ struct net_device *netdev = nic->netdev;
cb->command = cpu_to_le16(cb_config);
@@ -1132,6 +1139,9 @@ static void e100_configure(struct nic *nic, struct cb *cb, struct sk_buff *skb)
config->promiscuous_mode = 0x1; /* 1=on, 0=off */
}
+ if (unlikely(netdev->features & NETIF_F_RXFCS))
+ config->rx_crc_transfer = 0x1; /* 1=save, 0=discard */
+
if (nic->flags & multicast_all)
config->multicast_all = 0x1; /* 1=accept, 0=no */
@@ -1156,6 +1166,12 @@ static void e100_configure(struct nic *nic, struct cb *cb, struct sk_buff *skb)
}
}
+ if (netdev->features & NETIF_F_RXALL) {
+ config->rx_save_overruns = 0x1; /* 1=save, 0=discard */
+ config->rx_save_bad_frames = 0x1; /* 1=save, 0=discard */
+ config->rx_discard_short_frames = 0x0; /* 1=discard, 0=save */
+ }
+
netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
"[00-07]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",
c[0], c[1], c[2], c[3], c[4], c[5], c[6], c[7]);
@@ -1607,7 +1623,9 @@ static void e100_update_stats(struct nic *nic)
ns->collisions += nic->tx_collisions;
ns->tx_errors += le32_to_cpu(s->tx_max_collisions) +
le32_to_cpu(s->tx_lost_crs);
- ns->rx_length_errors += le32_to_cpu(s->rx_short_frame_errors) +
+ nic->rx_short_frame_errors +=
+ le32_to_cpu(s->rx_short_frame_errors);
+ ns->rx_length_errors = nic->rx_short_frame_errors +
nic->rx_over_length_errors;
ns->rx_crc_errors += le32_to_cpu(s->rx_crc_errors);
ns->rx_frame_errors += le32_to_cpu(s->rx_alignment_errors);
@@ -1720,6 +1738,16 @@ static void e100_xmit_prepare(struct nic *nic, struct cb *cb,
struct sk_buff *skb)
{
cb->command = nic->tx_command;
+
+ /*
+ * Use the last 4 bytes of the SKB payload packet as the CRC, used for
+ * testing, ie sending frames with bad CRC.
+ */
+ if (unlikely(skb->no_fcs))
+ cb->command |= __constant_cpu_to_le16(cb_tx_nc);
+ else
+ cb->command &= ~__constant_cpu_to_le16(cb_tx_nc);
+
/* interrupt every 16 packets regardless of delay */
if ((nic->cbs_avail & ~15) == nic->cbs_avail)
cb->command |= cpu_to_le16(cb_i);
@@ -1881,7 +1909,7 @@ static inline void e100_start_receiver(struct nic *nic, struct rx *rx)
}
}
-#define RFD_BUF_LEN (sizeof(struct rfd) + VLAN_ETH_FRAME_LEN)
+#define RFD_BUF_LEN (sizeof(struct rfd) + VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)
static int e100_rx_alloc_skb(struct nic *nic, struct rx *rx)
{
if (!(rx->skb = netdev_alloc_skb_ip_align(nic->netdev, RFD_BUF_LEN)))
@@ -1919,6 +1947,7 @@ static int e100_rx_indicate(struct nic *nic, struct rx *rx,
struct sk_buff *skb = rx->skb;
struct rfd *rfd = (struct rfd *)skb->data;
u16 rfd_status, actual_size;
+ u16 fcs_pad = 0;
if (unlikely(work_done && *work_done >= work_to_do))
return -EAGAIN;
@@ -1951,6 +1980,8 @@ static int e100_rx_indicate(struct nic *nic, struct rx *rx,
}
/* Get actual data size */
+ if (unlikely(dev->features & NETIF_F_RXFCS))
+ fcs_pad = 4;
actual_size = le16_to_cpu(rfd->actual_size) & 0x3FFF;
if (unlikely(actual_size > RFD_BUF_LEN - sizeof(struct rfd)))
actual_size = RFD_BUF_LEN - sizeof(struct rfd);
@@ -1977,16 +2008,27 @@ static int e100_rx_indicate(struct nic *nic, struct rx *rx,
skb_put(skb, actual_size);
skb->protocol = eth_type_trans(skb, nic->netdev);
+ /* If we are receiving all frames, then don't bother
+ * checking for errors.
+ */
+ if (unlikely(dev->features & NETIF_F_RXALL)) {
+ if (actual_size > ETH_DATA_LEN + VLAN_ETH_HLEN + fcs_pad)
+ /* Received oversized frame, but keep it. */
+ nic->rx_over_length_errors++;
+ goto process_skb;
+ }
+
if (unlikely(!(rfd_status & cb_ok))) {
/* Don't indicate if hardware indicates errors */
dev_kfree_skb_any(skb);
- } else if (actual_size > ETH_DATA_LEN + VLAN_ETH_HLEN) {
+ } else if (actual_size > ETH_DATA_LEN + VLAN_ETH_HLEN + fcs_pad) {
/* Don't indicate oversized frames */
nic->rx_over_length_errors++;
dev_kfree_skb_any(skb);
} else {
+process_skb:
dev->stats.rx_packets++;
- dev->stats.rx_bytes += actual_size;
+ dev->stats.rx_bytes += (actual_size - fcs_pad);
netif_receive_skb(skb);
if (work_done)
(*work_done)++;
@@ -2058,7 +2100,8 @@ static void e100_rx_clean(struct nic *nic, unsigned int *work_done,
pci_dma_sync_single_for_device(nic->pdev,
old_before_last_rx->dma_addr, sizeof(struct rfd),
PCI_DMA_BIDIRECTIONAL);
- old_before_last_rfd->size = cpu_to_le16(VLAN_ETH_FRAME_LEN);
+ old_before_last_rfd->size = cpu_to_le16(VLAN_ETH_FRAME_LEN
+ + ETH_FCS_LEN);
pci_dma_sync_single_for_device(nic->pdev,
old_before_last_rx->dma_addr, sizeof(struct rfd),
PCI_DMA_BIDIRECTIONAL);
@@ -2618,6 +2661,7 @@ static const char e100_gstrings_stats[][ETH_GSTRING_LEN] = {
"tx_deferred", "tx_single_collisions", "tx_multi_collisions",
"tx_flow_control_pause", "rx_flow_control_pause",
"rx_flow_control_unsupported", "tx_tco_packets", "rx_tco_packets",
+ "rx_short_frame_errors", "rx_over_length_errors",
};
#define E100_NET_STATS_LEN 21
#define E100_STATS_LEN ARRAY_SIZE(e100_gstrings_stats)
@@ -2651,6 +2695,8 @@ static void e100_get_ethtool_stats(struct net_device *netdev,
data[i++] = nic->rx_fc_unsupported;
data[i++] = nic->tx_tco_frames;
data[i++] = nic->rx_tco_frames;
+ data[i++] = nic->rx_short_frame_errors;
+ data[i++] = nic->rx_over_length_errors;
}
static void e100_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
@@ -2729,6 +2775,20 @@ static int e100_close(struct net_device *netdev)
return 0;
}
+static int e100_set_features(struct net_device *netdev,
+ netdev_features_t features)
+{
+ struct nic *nic = netdev_priv(netdev);
+ netdev_features_t changed = features ^ netdev->features;
+
+ if (!(changed & (NETIF_F_RXFCS | NETIF_F_RXALL)))
+ return 0;
+
+ netdev->features = features;
+ e100_exec_cb(nic, NULL, e100_configure);
+ return 0;
+}
+
static const struct net_device_ops e100_netdev_ops = {
.ndo_open = e100_open,
.ndo_stop = e100_close,
@@ -2742,6 +2802,7 @@ static const struct net_device_ops e100_netdev_ops = {
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = e100_netpoll,
#endif
+ .ndo_set_features = e100_set_features,
};
static int __devinit e100_probe(struct pci_dev *pdev,
@@ -2751,11 +2812,12 @@ static int __devinit e100_probe(struct pci_dev *pdev,
struct nic *nic;
int err;
- if (!(netdev = alloc_etherdev(sizeof(struct nic)))) {
- if (((1 << debug) - 1) & NETIF_MSG_PROBE)
- pr_err("Etherdev alloc failed, aborting\n");
+ if (!(netdev = alloc_etherdev(sizeof(struct nic))))
return -ENOMEM;
- }
+
+ netdev->hw_features |= NETIF_F_RXFCS;
+ netdev->priv_flags |= IFF_SUPP_NOFCS;
+ netdev->hw_features |= NETIF_F_RXALL;
netdev->netdev_ops = &e100_netdev_ops;
SET_ETHTOOL_OPS(netdev, &e100_ethtool_ops);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.