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https://github.com/FEX-Emu/linux.git
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liquidio VF timestamp
Adds support for VF timestamp. Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com> Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com> Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com> Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Raghu Vatsavayi
David S. Miller
parent
d8ab848c6b
commit
f625fe6208
@ -42,6 +42,7 @@ MODULE_PARM_DESC(debug, "NETIF_MSG debug bits");
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#define LIO_IFSTATE_DROQ_OPS 0x01
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#define LIO_IFSTATE_REGISTERED 0x02
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#define LIO_IFSTATE_RUNNING 0x04
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#define LIO_IFSTATE_RX_TIMESTAMP_ENABLED 0x08
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struct liquidio_if_cfg_context {
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int octeon_id;
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@ -65,6 +66,12 @@ struct liquidio_rx_ctl_context {
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int cond;
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};
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struct oct_timestamp_resp {
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u64 rh;
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u64 timestamp;
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u64 status;
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};
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union tx_info {
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u64 u64;
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struct {
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@ -1894,6 +1901,169 @@ static int liquidio_change_mtu(struct net_device *netdev, int new_mtu)
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return 0;
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}
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/**
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* \brief Handler for SIOCSHWTSTAMP ioctl
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* @param netdev network device
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* @param ifr interface request
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* @param cmd command
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*/
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static int hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr)
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{
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struct lio *lio = GET_LIO(netdev);
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struct hwtstamp_config conf;
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if (copy_from_user(&conf, ifr->ifr_data, sizeof(conf)))
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return -EFAULT;
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if (conf.flags)
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return -EINVAL;
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switch (conf.tx_type) {
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case HWTSTAMP_TX_ON:
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case HWTSTAMP_TX_OFF:
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break;
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default:
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return -ERANGE;
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}
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switch (conf.rx_filter) {
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case HWTSTAMP_FILTER_NONE:
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break;
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case HWTSTAMP_FILTER_ALL:
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case HWTSTAMP_FILTER_SOME:
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case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
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case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
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case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
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case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
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case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
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case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
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case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
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case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
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case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
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case HWTSTAMP_FILTER_PTP_V2_EVENT:
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case HWTSTAMP_FILTER_PTP_V2_SYNC:
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case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
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conf.rx_filter = HWTSTAMP_FILTER_ALL;
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break;
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default:
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return -ERANGE;
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}
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if (conf.rx_filter == HWTSTAMP_FILTER_ALL)
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ifstate_set(lio, LIO_IFSTATE_RX_TIMESTAMP_ENABLED);
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else
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ifstate_reset(lio, LIO_IFSTATE_RX_TIMESTAMP_ENABLED);
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return copy_to_user(ifr->ifr_data, &conf, sizeof(conf)) ? -EFAULT : 0;
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}
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/**
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* \brief ioctl handler
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* @param netdev network device
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* @param ifr interface request
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* @param cmd command
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*/
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static int liquidio_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
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{
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switch (cmd) {
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case SIOCSHWTSTAMP:
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return hwtstamp_ioctl(netdev, ifr);
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default:
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return -EOPNOTSUPP;
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}
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}
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static void handle_timestamp(struct octeon_device *oct, u32 status, void *buf)
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{
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struct sk_buff *skb = (struct sk_buff *)buf;
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struct octnet_buf_free_info *finfo;
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struct oct_timestamp_resp *resp;
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struct octeon_soft_command *sc;
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struct lio *lio;
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finfo = (struct octnet_buf_free_info *)skb->cb;
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lio = finfo->lio;
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sc = finfo->sc;
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oct = lio->oct_dev;
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resp = (struct oct_timestamp_resp *)sc->virtrptr;
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if (status != OCTEON_REQUEST_DONE) {
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dev_err(&oct->pci_dev->dev, "Tx timestamp instruction failed. Status: %llx\n",
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CVM_CAST64(status));
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resp->timestamp = 0;
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}
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octeon_swap_8B_data(&resp->timestamp, 1);
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if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS)) {
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struct skb_shared_hwtstamps ts;
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u64 ns = resp->timestamp;
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netif_info(lio, tx_done, lio->netdev,
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"Got resulting SKBTX_HW_TSTAMP skb=%p ns=%016llu\n",
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skb, (unsigned long long)ns);
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ts.hwtstamp = ns_to_ktime(ns + lio->ptp_adjust);
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skb_tstamp_tx(skb, &ts);
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}
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octeon_free_soft_command(oct, sc);
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tx_buffer_free(skb);
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}
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/* \brief Send a data packet that will be timestamped
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* @param oct octeon device
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* @param ndata pointer to network data
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* @param finfo pointer to private network data
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*/
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static int send_nic_timestamp_pkt(struct octeon_device *oct,
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struct octnic_data_pkt *ndata,
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struct octnet_buf_free_info *finfo)
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{
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struct octeon_soft_command *sc;
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int ring_doorbell;
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struct lio *lio;
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int retval;
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u32 len;
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lio = finfo->lio;
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sc = octeon_alloc_soft_command_resp(oct, &ndata->cmd,
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sizeof(struct oct_timestamp_resp));
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finfo->sc = sc;
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if (!sc) {
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dev_err(&oct->pci_dev->dev, "No memory for timestamped data packet\n");
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return IQ_SEND_FAILED;
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}
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if (ndata->reqtype == REQTYPE_NORESP_NET)
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ndata->reqtype = REQTYPE_RESP_NET;
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else if (ndata->reqtype == REQTYPE_NORESP_NET_SG)
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ndata->reqtype = REQTYPE_RESP_NET_SG;
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sc->callback = handle_timestamp;
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sc->callback_arg = finfo->skb;
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sc->iq_no = ndata->q_no;
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len = (u32)((struct octeon_instr_ih3 *)(&sc->cmd.cmd3.ih3))->dlengsz;
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ring_doorbell = 1;
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retval = octeon_send_command(oct, sc->iq_no, ring_doorbell, &sc->cmd,
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sc, len, ndata->reqtype);
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if (retval == IQ_SEND_FAILED) {
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dev_err(&oct->pci_dev->dev, "timestamp data packet failed status: %x\n",
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retval);
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octeon_free_soft_command(oct, sc);
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} else {
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netif_info(lio, tx_queued, lio->netdev, "Queued timestamp packet\n");
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}
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return retval;
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}
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/** \brief Transmit networks packets to the Octeon interface
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* @param skbuff skbuff struct to be passed to network layer.
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* @param netdev pointer to network device
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@ -1986,6 +2156,10 @@ static int liquidio_xmit(struct sk_buff *skb, struct net_device *netdev)
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cmdsetup.s.transport_csum = 1;
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}
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}
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if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
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skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
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cmdsetup.s.timestamp = 1;
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}
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if (!skb_shinfo(skb)->nr_frags) {
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cmdsetup.s.u.datasize = skb->len;
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@ -2110,7 +2284,10 @@ static int liquidio_xmit(struct sk_buff *skb, struct net_device *netdev)
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irh->vlan = skb_vlan_tag_get(skb) & VLAN_VID_MASK;
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}
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status = octnet_send_nic_data_pkt(oct, &ndata);
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if (unlikely(cmdsetup.s.timestamp))
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status = send_nic_timestamp_pkt(oct, &ndata, finfo);
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else
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status = octnet_send_nic_data_pkt(oct, &ndata);
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if (status == IQ_SEND_FAILED)
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goto lio_xmit_failed;
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@ -2382,6 +2559,7 @@ static const struct net_device_ops lionetdevops = {
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.ndo_vlan_rx_add_vid = liquidio_vlan_rx_add_vid,
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.ndo_vlan_rx_kill_vid = liquidio_vlan_rx_kill_vid,
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.ndo_change_mtu = liquidio_change_mtu,
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.ndo_do_ioctl = liquidio_ioctl,
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.ndo_fix_features = liquidio_fix_features,
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.ndo_set_features = liquidio_set_features,
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.ndo_udp_tunnel_add = liquidio_add_vxlan_port,
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