@@ -292,6 +292,7 @@ struct idpf_port_stats {
* @port_stats: per port csum, header split, and other offload stats
* @link_up: True if link is up
* @sw_marker_wq: workqueue for marker packets
+ * @tx_tstamp_caps: The capabilities negotiated for Tx timestamping
*/
struct idpf_vport {
u16 num_txq;
@@ -336,6 +337,8 @@ struct idpf_vport {
bool link_up;
wait_queue_head_t sw_marker_wq;
+
+ struct idpf_ptp_vport_tx_tstamp_caps *tx_tstamp_caps;
};
/**
@@ -480,6 +483,9 @@ struct idpf_vport_config {
struct idpf_vc_xn_manager;
+#define idpf_for_each_vport(adapter, i) \
+ for ((i) = 0; (i) < (adapter)->num_alloc_vports; (i)++)
+
/**
* struct idpf_adapter - Device data struct generated on probe
* @pdev: PCI device struct given on probe
@@ -62,6 +62,13 @@ void idpf_ptp_get_features_access(const struct idpf_adapter *adapter)
ptp->adj_dev_clk_time_access = idpf_ptp_get_access(adapter,
direct,
mailbox);
+
+ /* Tx timestamping */
+ direct = VIRTCHNL2_CAP_PTP_TX_TSTAMPS;
+ mailbox = VIRTCHNL2_CAP_PTP_TX_TSTAMPS_MB;
+ ptp->tx_tstamp_access = idpf_ptp_get_access(adapter,
+ direct,
+ mailbox);
}
/**
@@ -517,6 +524,65 @@ static int idpf_ptp_create_clock(const struct idpf_adapter *adapter)
return 0;
}
+/**
+ * idpf_ptp_release_vport_tstamp - Release the Tx timestamps trakcers for a
+ * given vport.
+ * @vport: Virtual port structure
+ *
+ * Remove the queues and delete lists that tracks Tx timestamp entries for a
+ * given vport.
+ */
+static void idpf_ptp_release_vport_tstamp(struct idpf_vport *vport)
+{
+ struct idpf_ptp_tx_tstamp *ptp_tx_tstamp, *tmp;
+ struct list_head *head;
+
+ if (!idpf_ptp_get_vport_tstamp_capability(vport))
+ return;
+
+ /* Remove list with free latches */
+ spin_lock(&vport->tx_tstamp_caps->lock_free);
+
+ head = &vport->tx_tstamp_caps->latches_free;
+ list_for_each_entry_safe(ptp_tx_tstamp, tmp, head, list_member) {
+ list_del(&ptp_tx_tstamp->list_member);
+ kfree(ptp_tx_tstamp);
+ }
+
+ spin_unlock(&vport->tx_tstamp_caps->lock_free);
+
+ /* Remove list with latches in use */
+ spin_lock(&vport->tx_tstamp_caps->lock_in_use);
+
+ head = &vport->tx_tstamp_caps->latches_in_use;
+ list_for_each_entry_safe(ptp_tx_tstamp, tmp, head, list_member) {
+ list_del(&ptp_tx_tstamp->list_member);
+ kfree(ptp_tx_tstamp);
+ }
+
+ spin_unlock(&vport->tx_tstamp_caps->lock_in_use);
+
+ kfree(vport->tx_tstamp_caps);
+ vport->tx_tstamp_caps = NULL;
+}
+
+/**
+ * idpf_ptp_release_tstamp - Release the Tx timestamps trackers
+ * @adapter: Driver specific private structure
+ *
+ * Remove the queues and delete lists that tracks Tx timestamp entries.
+ */
+static void idpf_ptp_release_tstamp(struct idpf_adapter *adapter)
+{
+ int i;
+
+ idpf_for_each_vport(adapter, i) {
+ struct idpf_vport *vport = adapter->vports[i];
+
+ idpf_ptp_release_vport_tstamp(vport);
+ }
+}
+
/**
* idpf_ptp_init - Initialize PTP hardware clock support
* @adapter: Driver specific private structure
@@ -601,6 +667,9 @@ void idpf_ptp_release(struct idpf_adapter *adapter)
if (!ptp)
return;
+ if (ptp->tx_tstamp_access != IDPF_PTP_NONE)
+ idpf_ptp_release_tstamp(adapter);
+
if (ptp->clock)
ptp_clock_unregister(ptp->clock);
@@ -83,6 +83,70 @@ struct idpf_ptp_secondary_mbx {
bool valid:1;
};
+/**
+ * enum idpf_ptp_tx_tstamp_state - Tx timestamp states
+ * @IDPF_PTP_FREE: Tx timestamp index free to use
+ * @IDPF_PTP_REQUEST: Tx timestamp index set to the Tx descriptor
+ * @IDPF_PTP_READ_VALUE: Tx timestamp value ready to be read
+ */
+enum idpf_ptp_tx_tstamp_state {
+ IDPF_PTP_FREE,
+ IDPF_PTP_REQUEST,
+ IDPF_PTP_READ_VALUE,
+};
+
+/**
+ * struct idpf_ptp_tx_tstamp_status - Parameters to track Tx timestamp
+ * @skb: the pointer to the SKB that received the completion tag
+ * @state: the state of the Tx timestamp
+ */
+struct idpf_ptp_tx_tstamp_status {
+ struct sk_buff *skb;
+ enum idpf_ptp_tx_tstamp_state state;
+};
+
+/**
+ * struct idpf_ptp_tx_tstamp - Parameters for Tx timestamping
+ * @list_member: the list member strutcure
+ * @tx_latch_reg_offset_l: Tx tstamp latch low register offset
+ * @tx_latch_reg_offset_h: Tx tstamp latch high register offset
+ * @skb: the pointer to the SKB for this timestamp request
+ * @tstamp: the Tx tstamp value
+ * @idx: the index of the Tx tstamp
+ */
+struct idpf_ptp_tx_tstamp {
+ struct list_head list_member;
+ u32 tx_latch_reg_offset_l;
+ u32 tx_latch_reg_offset_h;
+ struct sk_buff *skb;
+ u64 tstamp;
+ u32 idx;
+};
+
+/**
+ * struct idpf_ptp_vport_tx_tstamp_caps - Tx timestamp capabilities
+ * @vport_id: the vport id
+ * @num_entries: the number of negotiated Tx timestamp entries
+ * @tstamp_ns_lo_bit: first bit for nanosecond part of the timestamp
+ * @lock_in_use: the lock to the used latches list
+ * @lock_free: the lock to free the latches list
+ * @lock_status: the lock to the status tracker
+ * @latches_free: the list of the free Tx timestamps latches
+ * @latches_in_use: the list of the used Tx timestamps latches
+ * @tx_tstamp_status: Tx tstamp status tracker
+ */
+struct idpf_ptp_vport_tx_tstamp_caps {
+ u32 vport_id;
+ u16 num_entries;
+ u16 tstamp_ns_lo_bit;
+ spinlock_t lock_in_use;
+ spinlock_t lock_free;
+ spinlock_t lock_status;
+ struct list_head latches_free;
+ struct list_head latches_in_use;
+ struct idpf_ptp_tx_tstamp_status tx_tstamp_status[];
+};
+
/**
* struct idpf_ptp - PTP parameters
* @info: structure defining PTP hardware capabilities
@@ -97,6 +161,7 @@ struct idpf_ptp_secondary_mbx {
* @get_cross_tstamp_access: access type for the cross timestamping
* @set_dev_clk_time_access: access type for setting the device clock time
* @adj_dev_clk_time_access: access type for the adjusting the device clock
+ * @tx_tstamp_access: access type for the Tx timestamp value read
* @rsv: reserved bits
* @secondary_mbx: parameters for using dedicated PTP mailbox
*/
@@ -113,7 +178,8 @@ struct idpf_ptp {
enum idpf_ptp_access get_cross_tstamp_access:2;
enum idpf_ptp_access set_dev_clk_time_access:2;
enum idpf_ptp_access adj_dev_clk_time_access:2;
- u8 rsv;
+ enum idpf_ptp_access tx_tstamp_access:2;
+ u8 rsv:6;
struct idpf_ptp_secondary_mbx secondary_mbx;
};
@@ -141,6 +207,28 @@ struct idpf_ptp_dev_timers {
u64 dev_clk_time_ns;
};
+/**
+ * idpf_ptp_get_vport_tstamp_capability - Verify the timestamping capability
+ * for a given vport.
+ * @vport: Virtual port structure
+ *
+ * Since performing timestamp flows requires reading the device clock value and
+ * the support in the Control Plane, the function checks both factors and
+ * summarizes the support for the timestamping.
+ *
+ * Return: true if the timestamping is supported, false otherwise.
+ */
+static inline bool idpf_ptp_get_vport_tstamp_capability(struct idpf_vport *vport)
+{
+ if (!vport || !vport->adapter->ptp || !vport->tx_tstamp_caps)
+ return false;
+ else if (vport->adapter->ptp->tx_tstamp_access != IDPF_PTP_NONE &&
+ vport->adapter->ptp->get_dev_clk_time_access != IDPF_PTP_NONE)
+ return true;
+ else
+ return false;
+}
+
#if IS_ENABLED(CONFIG_PTP_1588_CLOCK)
int idpf_ptp_init(struct idpf_adapter *adapter);
void idpf_ptp_release(struct idpf_adapter *adapter);
@@ -153,6 +241,7 @@ int idpf_ptp_get_cross_time(struct idpf_adapter *adapter,
int idpf_ptp_set_dev_clk_time(struct idpf_adapter *adapter, u64 time);
int idpf_ptp_adj_dev_clk_fine(struct idpf_adapter *adapter, u64 incval);
int idpf_ptp_adj_dev_clk_time(struct idpf_adapter *adapter, s64 delta);
+int idpf_ptp_get_vport_tstamps_caps(struct idpf_vport *vport);
#else /* CONFIG_PTP_1588_CLOCK */
static inline int idpf_ptp_init(struct idpf_adapter *adapter)
{
@@ -201,5 +290,10 @@ static inline int idpf_ptp_adj_dev_clk_time(struct idpf_adapter *adapter,
return -EOPNOTSUPP;
}
+static inline int idpf_ptp_get_vport_tstamps_caps(struct idpf_vport *vport)
+{
+ return -EOPNOTSUPP;
+}
+
#endif /* CONFIG_PTP_1588_CLOCK */
#endif /* _IDPF_PTP_H */
@@ -169,6 +169,8 @@ static bool idpf_ptp_is_mb_msg(u32 op)
case VIRTCHNL2_OP_PTP_SET_DEV_CLK_TIME:
case VIRTCHNL2_OP_PTP_ADJ_DEV_CLK_FINE:
case VIRTCHNL2_OP_PTP_ADJ_DEV_CLK_TIME:
+ case VIRTCHNL2_OP_PTP_GET_VPORT_TX_TSTAMP_CAPS:
+ case VIRTCHNL2_OP_PTP_GET_VPORT_TX_TSTAMP:
return true;
default:
return false;
@@ -3120,6 +3122,7 @@ void idpf_vport_init(struct idpf_vport *vport, struct idpf_vport_max_q *max_q)
u16 rx_itr[] = {2, 8, 32, 96, 128};
struct idpf_rss_data *rss_data;
u16 idx = vport->idx;
+ int err;
vport_config = adapter->vport_config[idx];
rss_data = &vport_config->user_config.rss_data;
@@ -3154,6 +3157,14 @@ void idpf_vport_init(struct idpf_vport *vport, struct idpf_vport_max_q *max_q)
idpf_vport_alloc_vec_indexes(vport);
vport->crc_enable = adapter->crc_enable;
+
+ if (!(vport_msg->vport_flags &
+ le16_to_cpu(VIRTCHNL2_VPORT_UPLINK_PORT)))
+ return;
+
+ err = idpf_ptp_get_vport_tstamps_caps(vport);
+ if (err)
+ pci_dbg(vport->adapter->pdev, "Tx timestamping not supported\n");
}
/**
@@ -22,7 +22,8 @@ int idpf_ptp_get_caps(struct idpf_adapter *adapter)
VIRTCHNL2_CAP_PTP_GET_CROSS_TIME |
VIRTCHNL2_CAP_PTP_GET_CROSS_TIME_MB |
VIRTCHNL2_CAP_PTP_SET_DEVICE_CLK_TIME_MB |
- VIRTCHNL2_CAP_PTP_ADJ_DEVICE_CLK_MB)
+ VIRTCHNL2_CAP_PTP_ADJ_DEVICE_CLK_MB |
+ VIRTCHNL2_CAP_PTP_TX_TSTAMPS_MB)
};
struct idpf_vc_xn_params xn_params = {
.vc_op = VIRTCHNL2_OP_PTP_GET_CAPS,
@@ -314,3 +315,128 @@ int idpf_ptp_adj_dev_clk_fine(struct idpf_adapter *adapter, u64 incval)
return 0;
}
+
+/**
+ * idpf_ptp_get_vport_tstamps_caps - Send virtchnl to get tstamps caps for vport
+ * @vport: Virtual port structure
+ *
+ * Send virtchnl get vport tstamps caps message to receive the set of tstamp
+ * capabilities per vport.
+ *
+ * Return: 0 on success, -errno otherwise.
+ */
+int idpf_ptp_get_vport_tstamps_caps(struct idpf_vport *vport)
+{
+ struct virtchnl2_ptp_get_vport_tx_tstamp_caps send_tx_tstamp_caps;
+ struct virtchnl2_ptp_get_vport_tx_tstamp_caps *rcv_tx_tstamp_caps;
+ struct idpf_ptp_tx_tstamp *ptp_tx_tstamp, *ptp_tx_tstamps, *tmp;
+ struct virtchnl2_ptp_tx_tstamp_latch_caps tx_tstamp_latch_caps;
+ struct idpf_ptp_vport_tx_tstamp_caps *tstamp_caps;
+ struct idpf_vc_xn_params xn_params = {
+ .vc_op = VIRTCHNL2_OP_PTP_GET_VPORT_TX_TSTAMP_CAPS,
+ .send_buf.iov_base = &send_tx_tstamp_caps,
+ .send_buf.iov_len = sizeof(send_tx_tstamp_caps),
+ .recv_buf.iov_len = IDPF_CTLQ_MAX_BUF_LEN,
+ .timeout_ms = IDPF_VC_XN_DEFAULT_TIMEOUT_MSEC,
+ };
+ enum idpf_ptp_access tstamp_access, get_dev_clk_access;
+ struct idpf_ptp *ptp = vport->adapter->ptp;
+ struct list_head *head;
+ int err = 0, reply_sz;
+ u16 num_latches;
+ u32 size;
+
+ if (!ptp)
+ return -EOPNOTSUPP;
+
+ tstamp_access = ptp->tx_tstamp_access;
+ get_dev_clk_access = ptp->get_dev_clk_time_access;
+ if (tstamp_access == IDPF_PTP_NONE ||
+ get_dev_clk_access == IDPF_PTP_NONE)
+ return -EOPNOTSUPP;
+
+ rcv_tx_tstamp_caps = kzalloc(IDPF_CTLQ_MAX_BUF_LEN, GFP_KERNEL);
+ if (!rcv_tx_tstamp_caps)
+ return -ENOMEM;
+
+ send_tx_tstamp_caps.vport_id = cpu_to_le32(vport->vport_id);
+ xn_params.recv_buf.iov_base = rcv_tx_tstamp_caps;
+
+ reply_sz = idpf_vc_xn_exec(vport->adapter, &xn_params);
+ if (reply_sz < 0) {
+ err = reply_sz;
+ goto get_tstamp_caps_out;
+ }
+
+ num_latches = le16_to_cpu(rcv_tx_tstamp_caps->num_latches);
+ size = struct_size(rcv_tx_tstamp_caps, tstamp_latches, num_latches);
+ if (reply_sz != size) {
+ err = -EIO;
+ goto get_tstamp_caps_out;
+ }
+
+ size = struct_size(tstamp_caps, tx_tstamp_status, num_latches);
+ tstamp_caps = kzalloc(size, GFP_KERNEL);
+ if (!tstamp_caps) {
+ err = -ENOMEM;
+ goto get_tstamp_caps_out;
+ }
+
+ tstamp_caps->num_entries = num_latches;
+ INIT_LIST_HEAD(&tstamp_caps->latches_in_use);
+ INIT_LIST_HEAD(&tstamp_caps->latches_free);
+
+ spin_lock_init(&tstamp_caps->lock_free);
+ spin_lock_init(&tstamp_caps->lock_in_use);
+ spin_lock_init(&tstamp_caps->lock_status);
+
+ tstamp_caps->tstamp_ns_lo_bit = rcv_tx_tstamp_caps->tstamp_ns_lo_bit;
+
+ ptp_tx_tstamps = kcalloc(tstamp_caps->num_entries,
+ sizeof(*ptp_tx_tstamp), GFP_KERNEL);
+ if (!ptp_tx_tstamps) {
+ err = -ENOMEM;
+ goto err_free_ptp_tx_stamp_list;
+ }
+
+ for (u16 i = 0; i < tstamp_caps->num_entries; i++) {
+ __le32 offset_l, offset_h;
+
+ ptp_tx_tstamp = ptp_tx_tstamps + i;
+ tx_tstamp_latch_caps = rcv_tx_tstamp_caps->tstamp_latches[i];
+
+ if (tstamp_access != IDPF_PTP_DIRECT)
+ goto skip_offsets;
+
+ offset_l = tx_tstamp_latch_caps.tx_latch_reg_offset_l;
+ offset_h = tx_tstamp_latch_caps.tx_latch_reg_offset_h;
+ ptp_tx_tstamp->tx_latch_reg_offset_l = le32_to_cpu(offset_l);
+ ptp_tx_tstamp->tx_latch_reg_offset_h = le32_to_cpu(offset_h);
+
+skip_offsets:
+ ptp_tx_tstamp->idx = tx_tstamp_latch_caps.index;
+
+ list_add(&ptp_tx_tstamp->list_member,
+ &tstamp_caps->latches_free);
+
+ tstamp_caps->tx_tstamp_status[i].state = IDPF_PTP_FREE;
+ }
+
+ vport->tx_tstamp_caps = tstamp_caps;
+ kfree(rcv_tx_tstamp_caps);
+
+ return 0;
+
+err_free_ptp_tx_stamp_list:
+ head = &tstamp_caps->latches_free;
+ list_for_each_entry_safe(ptp_tx_tstamp, tmp, head, list_member) {
+ list_del(&ptp_tx_tstamp->list_member);
+ kfree(ptp_tx_tstamp);
+ }
+
+ kfree(tstamp_caps);
+get_tstamp_caps_out:
+ kfree(rcv_tx_tstamp_caps);
+
+ return err;
+}
@@ -569,6 +569,14 @@ struct virtchnl2_queue_reg_chunks {
};
VIRTCHNL2_CHECK_STRUCT_LEN(8, virtchnl2_queue_reg_chunks);
+/**
+ * enum virtchnl2_vport_flags - Vport flags that indicate vport capabilities.
+ * @VIRTCHNL2_VPORT_UPLINK_PORT: Representatives of underlying physical ports
+ */
+enum virtchnl2_vport_flags {
+ VIRTCHNL2_VPORT_UPLINK_PORT = BIT(0),
+};
+
/**
* struct virtchnl2_create_vport - Create vport config info.
* @vport_type: See enum virtchnl2_vport_type.
@@ -620,7 +628,7 @@ struct virtchnl2_create_vport {
__le16 max_mtu;
__le32 vport_id;
u8 default_mac_addr[ETH_ALEN];
- __le16 pad;
+ __le16 vport_flags;
__le64 rx_desc_ids;
__le64 tx_desc_ids;
u8 pad1[72];