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authorSasha Neftin <sasha.neftin@intel.com>2019-02-20 14:39:31 +0200
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2019-03-19 15:16:20 -0700
commit65cd3a725e908fe5a93d507411c3ea83157d10c4 (patch)
tree2be9aa90e2574bff934f56e9e3d993a81303ed65 /drivers/net
parentigc: Add support for statistics (diff)
downloadlinux-dev-65cd3a725e908fe5a93d507411c3ea83157d10c4.tar.xz
linux-dev-65cd3a725e908fe5a93d507411c3ea83157d10c4.zip
igc: Add support for the ntuple feature
Copy the ntuple feature into list of user selectable features. Enable the ntuple feature. Signed-off-by: Sasha Neftin <sasha.neftin@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/ethernet/intel/igc/igc_defines.h3
-rw-r--r--drivers/net/ethernet/intel/igc/igc_main.c86
2 files changed, 89 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/igc/igc_defines.h b/drivers/net/ethernet/intel/igc/igc_defines.h
index 925c89b57ec5..a9a30268de59 100644
--- a/drivers/net/ethernet/intel/igc/igc_defines.h
+++ b/drivers/net/ethernet/intel/igc/igc_defines.h
@@ -400,6 +400,9 @@
#define IGC_N0_QUEUE -1
+#define IGC_MAX_MAC_HDR_LEN 127
+#define IGC_MAX_NETWORK_HDR_LEN 511
+
#define IGC_VLAPQF_QUEUE_SEL(_n, q_idx) ((q_idx) << ((_n) * 4))
#define IGC_VLAPQF_P_VALID(_n) (0x1 << (3 + (_n) * 4))
#define IGC_VLAPQF_QUEUE_MASK 0x03
diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c
index 1d21b95d9e2c..a883b3f357e7 100644
--- a/drivers/net/ethernet/intel/igc/igc_main.c
+++ b/drivers/net/ethernet/intel/igc/igc_main.c
@@ -2127,6 +2127,86 @@ static struct net_device_stats *igc_get_stats(struct net_device *netdev)
return &netdev->stats;
}
+static netdev_features_t igc_fix_features(struct net_device *netdev,
+ netdev_features_t features)
+{
+ /* Since there is no support for separate Rx/Tx vlan accel
+ * enable/disable make sure Tx flag is always in same state as Rx.
+ */
+ if (features & NETIF_F_HW_VLAN_CTAG_RX)
+ features |= NETIF_F_HW_VLAN_CTAG_TX;
+ else
+ features &= ~NETIF_F_HW_VLAN_CTAG_TX;
+
+ return features;
+}
+
+static int igc_set_features(struct net_device *netdev,
+ netdev_features_t features)
+{
+ netdev_features_t changed = netdev->features ^ features;
+ struct igc_adapter *adapter = netdev_priv(netdev);
+
+ /* Add VLAN support */
+ if (!(changed & (NETIF_F_RXALL | NETIF_F_NTUPLE)))
+ return 0;
+
+ if (!(features & NETIF_F_NTUPLE)) {
+ struct hlist_node *node2;
+ struct igc_nfc_filter *rule;
+
+ spin_lock(&adapter->nfc_lock);
+ hlist_for_each_entry_safe(rule, node2,
+ &adapter->nfc_filter_list, nfc_node) {
+ igc_erase_filter(adapter, rule);
+ hlist_del(&rule->nfc_node);
+ kfree(rule);
+ }
+ spin_unlock(&adapter->nfc_lock);
+ adapter->nfc_filter_count = 0;
+ }
+
+ netdev->features = features;
+
+ if (netif_running(netdev))
+ igc_reinit_locked(adapter);
+ else
+ igc_reset(adapter);
+
+ return 1;
+}
+
+static netdev_features_t
+igc_features_check(struct sk_buff *skb, struct net_device *dev,
+ netdev_features_t features)
+{
+ unsigned int network_hdr_len, mac_hdr_len;
+
+ /* Make certain the headers can be described by a context descriptor */
+ mac_hdr_len = skb_network_header(skb) - skb->data;
+ if (unlikely(mac_hdr_len > IGC_MAX_MAC_HDR_LEN))
+ return features & ~(NETIF_F_HW_CSUM |
+ NETIF_F_SCTP_CRC |
+ NETIF_F_HW_VLAN_CTAG_TX |
+ NETIF_F_TSO |
+ NETIF_F_TSO6);
+
+ network_hdr_len = skb_checksum_start(skb) - skb_network_header(skb);
+ if (unlikely(network_hdr_len > IGC_MAX_NETWORK_HDR_LEN))
+ return features & ~(NETIF_F_HW_CSUM |
+ NETIF_F_SCTP_CRC |
+ NETIF_F_TSO |
+ NETIF_F_TSO6);
+
+ /* We can only support IPv4 TSO in tunnels if we can mangle the
+ * inner IP ID field, so strip TSO if MANGLEID is not supported.
+ */
+ if (skb->encapsulation && !(features & NETIF_F_TSO_MANGLEID))
+ features &= ~NETIF_F_TSO;
+
+ return features;
+}
+
/**
* igc_configure - configure the hardware for RX and TX
* @adapter: private board structure
@@ -3793,6 +3873,9 @@ static const struct net_device_ops igc_netdev_ops = {
.ndo_set_mac_address = igc_set_mac,
.ndo_change_mtu = igc_change_mtu,
.ndo_get_stats = igc_get_stats,
+ .ndo_fix_features = igc_fix_features,
+ .ndo_set_features = igc_set_features,
+ .ndo_features_check = igc_features_check,
};
/* PCIe configuration access */
@@ -4022,6 +4105,9 @@ static int igc_probe(struct pci_dev *pdev,
if (err)
goto err_sw_init;
+ /* copy netdev features into list of user selectable features */
+ netdev->hw_features |= NETIF_F_NTUPLE;
+
/* MTU range: 68 - 9216 */
netdev->min_mtu = ETH_MIN_MTU;
netdev->max_mtu = MAX_STD_JUMBO_FRAME_SIZE;