netxen: ethtool statistics and control for LRO
Add ethtool -K knob to control LRO in firmware. LRO path is completely separated from GRO, LRO packets are still fed with netif_receive_skb(). Also fix ethtool statistics to include LRO packets. Also use correct message type while configuring interrupt coalescing. Signed-off-by: Narender Kumar <narender.kumar@qlogic.com> Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -576,7 +576,8 @@ struct netxen_adapter_stats {
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u64 rxdropped;
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u64 txdropped;
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u64 csummed;
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u64 no_rcv;
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u64 rx_pkts;
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u64 lro_pkts;
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u64 rxbytes;
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u64 txbytes;
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};
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@ -958,7 +959,8 @@ typedef struct {
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#define NX_NIC_H2C_OPCODE_PROXY_STOP_DONE 20
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#define NX_NIC_H2C_OPCODE_GET_LINKEVENT 21
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#define NX_NIC_C2C_OPCODE 22
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#define NX_NIC_H2C_OPCODE_LAST 23
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#define NX_NIC_H2C_OPCODE_CONFIG_HW_LRO 24
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#define NX_NIC_H2C_OPCODE_LAST 25
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/*
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* Firmware --> Driver
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@ -984,6 +986,19 @@ typedef struct {
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#define VPORT_MISS_MODE_ACCEPT_ALL 1 /* accept all packets */
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#define VPORT_MISS_MODE_ACCEPT_MULTI 2 /* accept unmatched multicast */
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#define NX_NIC_LRO_REQUEST_FIRST 0
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#define NX_NIC_LRO_REQUEST_ADD_FLOW 1
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#define NX_NIC_LRO_REQUEST_DELETE_FLOW 2
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#define NX_NIC_LRO_REQUEST_TIMER 3
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#define NX_NIC_LRO_REQUEST_CLEANUP 4
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#define NX_NIC_LRO_REQUEST_ADD_FLOW_SCHEDULED 5
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#define NX_TOE_LRO_REQUEST_ADD_FLOW 6
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#define NX_TOE_LRO_REQUEST_ADD_FLOW_RESPONSE 7
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#define NX_TOE_LRO_REQUEST_DELETE_FLOW 8
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#define NX_TOE_LRO_REQUEST_DELETE_FLOW_RESPONSE 9
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#define NX_TOE_LRO_REQUEST_TIMER 10
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#define NX_NIC_LRO_REQUEST_LAST 11
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#define NX_FW_CAPABILITY_LINK_NOTIFICATION (1 << 5)
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#define NX_FW_CAPABILITY_SWITCHING (1 << 6)
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#define NX_FW_CAPABILITY_PEXQ (1 << 7)
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@ -1064,6 +1079,7 @@ typedef struct {
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#define NETXEN_NIC_MSI_ENABLED 0x02
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#define NETXEN_NIC_MSIX_ENABLED 0x04
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#define NETXEN_NIC_LRO_ENABLED 0x08
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#define NETXEN_IS_MSI_FAMILY(adapter) \
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((adapter)->flags & (NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED))
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@ -1290,6 +1306,8 @@ void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup);
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int nx_fw_cmd_set_mtu(struct netxen_adapter *adapter, int mtu);
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int netxen_nic_change_mtu(struct net_device *netdev, int new_mtu);
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int netxen_config_hw_lro(struct netxen_adapter *adapter, int enable);
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int netxen_send_lro_cleanup(struct netxen_adapter *adapter);
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int netxen_nic_set_mac(struct net_device *netdev, void *p);
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struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev);
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@ -203,8 +203,6 @@ nx_fw_cmd_create_rx_ctx(struct netxen_adapter *adapter)
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cap = (NX_CAP0_LEGACY_CONTEXT | NX_CAP0_LEGACY_MN);
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cap |= (NX_CAP0_JUMBO_CONTIGUOUS | NX_CAP0_LRO_CONTIGUOUS);
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if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
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cap |= NX_CAP0_HW_LRO;
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prq->capabilities[0] = cpu_to_le32(cap);
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prq->host_int_crb_mode =
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@ -57,7 +57,8 @@ static const struct netxen_nic_stats netxen_nic_gstrings_stats[] = {
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{"rx_dropped", NETXEN_NIC_STAT(stats.rxdropped)},
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{"tx_dropped", NETXEN_NIC_STAT(stats.txdropped)},
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{"csummed", NETXEN_NIC_STAT(stats.csummed)},
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{"no_rcv", NETXEN_NIC_STAT(stats.no_rcv)},
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{"rx_pkts", NETXEN_NIC_STAT(stats.rx_pkts)},
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{"lro_pkts", NETXEN_NIC_STAT(stats.lro_pkts)},
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{"rx_bytes", NETXEN_NIC_STAT(stats.rxbytes)},
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{"tx_bytes", NETXEN_NIC_STAT(stats.txbytes)},
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};
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@ -941,6 +942,28 @@ static int netxen_get_intr_coalesce(struct net_device *netdev,
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return 0;
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}
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static int netxen_nic_set_flags(struct net_device *netdev, u32 data)
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{
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struct netxen_adapter *adapter = netdev_priv(netdev);
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int hw_lro;
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if (!(adapter->capabilities & NX_FW_CAPABILITY_HW_LRO))
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return -EINVAL;
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ethtool_op_set_flags(netdev, data);
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hw_lro = (data & ETH_FLAG_LRO) ? NETXEN_NIC_LRO_ENABLED : 0;
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if (netxen_config_hw_lro(adapter, hw_lro))
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return -EIO;
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if ((hw_lro == 0) && netxen_send_lro_cleanup(adapter))
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return -EIO;
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return 0;
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}
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struct ethtool_ops netxen_nic_ethtool_ops = {
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.get_settings = netxen_nic_get_settings,
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.set_settings = netxen_nic_set_settings,
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@ -968,4 +991,6 @@ struct ethtool_ops netxen_nic_ethtool_ops = {
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.set_rx_csum = netxen_nic_set_rx_csum,
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.get_coalesce = netxen_get_intr_coalesce,
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.set_coalesce = netxen_set_intr_coalesce,
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.get_flags = ethtool_op_get_flags,
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.set_flags = netxen_nic_set_flags,
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};
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@ -643,7 +643,7 @@ int netxen_config_intr_coalesce(struct netxen_adapter *adapter)
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memset(&req, 0, sizeof(nx_nic_req_t));
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req.qhdr = cpu_to_le64(NX_NIC_REQUEST << 23);
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req.qhdr = cpu_to_le64(NX_HOST_REQUEST << 23);
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word = NETXEN_CONFIG_INTR_COALESCE | ((u64)adapter->portnum << 16);
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req.req_hdr = cpu_to_le64(word);
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@ -659,6 +659,35 @@ int netxen_config_intr_coalesce(struct netxen_adapter *adapter)
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return rv;
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}
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int netxen_config_hw_lro(struct netxen_adapter *adapter, int enable)
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{
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nx_nic_req_t req;
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u64 word;
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int rv = 0;
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if ((adapter->flags & NETXEN_NIC_LRO_ENABLED) == enable)
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return 0;
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memset(&req, 0, sizeof(nx_nic_req_t));
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req.qhdr = cpu_to_le64(NX_HOST_REQUEST << 23);
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word = NX_NIC_H2C_OPCODE_CONFIG_HW_LRO | ((u64)adapter->portnum << 16);
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req.req_hdr = cpu_to_le64(word);
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req.words[0] = cpu_to_le64(enable);
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rv = netxen_send_cmd_descs(adapter, (struct cmd_desc_type0 *)&req, 1);
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if (rv != 0) {
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printk(KERN_ERR "ERROR. Could not send "
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"configure hw lro request\n");
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}
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adapter->flags ^= NETXEN_NIC_LRO_ENABLED;
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return rv;
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}
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#define RSS_HASHTYPE_IP_TCP 0x3
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int netxen_config_rss(struct netxen_adapter *adapter, int enable)
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@ -752,6 +781,29 @@ int netxen_linkevent_request(struct netxen_adapter *adapter, int enable)
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return rv;
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}
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int netxen_send_lro_cleanup(struct netxen_adapter *adapter)
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{
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nx_nic_req_t req;
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u64 word;
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int rv;
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memset(&req, 0, sizeof(nx_nic_req_t));
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req.qhdr = cpu_to_le64(NX_HOST_REQUEST << 23);
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word = NX_NIC_H2C_OPCODE_LRO_REQUEST |
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((u64)adapter->portnum << 16) |
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((u64)NX_NIC_LRO_REQUEST_CLEANUP << 56) ;
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req.req_hdr = cpu_to_le64(word);
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rv = netxen_send_cmd_descs(adapter, (struct cmd_desc_type0 *)&req, 1);
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if (rv != 0) {
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printk(KERN_ERR "%s: could not cleanup lro flows\n",
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adapter->netdev->name);
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}
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return rv;
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}
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/*
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* netxen_nic_change_mtu - Change the Maximum Transfer Unit
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* @returns 0 on success, negative on failure
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@ -2066,6 +2118,8 @@ void netxen_nic_get_firmware_info(struct netxen_adapter *adapter)
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if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222))
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adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
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adapter->flags &= ~NETXEN_NIC_LRO_ENABLED;
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}
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int
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@ -1277,7 +1277,7 @@ netxen_process_rcv(struct netxen_adapter *adapter,
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napi_gro_receive(&sds_ring->napi, skb);
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adapter->stats.no_rcv++;
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adapter->stats.rx_pkts++;
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adapter->stats.rxbytes += length;
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return buffer;
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@ -1350,8 +1350,13 @@ netxen_process_lro(struct netxen_adapter *adapter,
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th->psh = push;
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th->seq = htonl(seq_number);
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length = skb->len;
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netif_receive_skb(skb);
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adapter->stats.lro_pkts++;
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adapter->stats.rxbytes += length;
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return buffer;
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}
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@ -892,6 +892,9 @@ netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
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if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
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netxen_config_intr_coalesce(adapter);
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if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
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netxen_config_hw_lro(adapter, NETXEN_NIC_LRO_ENABLED);
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netxen_napi_enable(adapter);
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if (adapter->capabilities & NX_FW_CAPABILITY_LINK_NOTIFICATION)
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@ -1077,6 +1080,9 @@ netxen_setup_netdev(struct netxen_adapter *adapter,
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if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX)
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netdev->features |= (NETIF_F_HW_VLAN_TX);
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if (adapter->capabilities & NX_FW_CAPABILITY_HW_LRO)
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netdev->features |= NETIF_F_LRO;
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netdev->irq = adapter->msix_entries[0].vector;
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err = netxen_napi_add(adapter, netdev);
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@ -1812,7 +1818,7 @@ struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
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memset(stats, 0, sizeof(*stats));
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stats->rx_packets = adapter->stats.no_rcv;
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stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
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stats->tx_packets = adapter->stats.xmitfinished;
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stats->rx_bytes = adapter->stats.rxbytes;
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stats->tx_bytes = adapter->stats.txbytes;
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