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path: root/drivers/net/ethernet/intel/i40e/i40e_main.c
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Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_main.c')
-rw-r--r--drivers/net/ethernet/intel/i40e/i40e_main.c299
1 files changed, 226 insertions, 73 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 89bbe32a5934..7e415bb5a7dc 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -408,6 +408,27 @@ struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
}
/**
+ * i40e_get_netdev_stats_struct_tx - populate stats from a Tx ring
+ * @ring: Tx ring to get statistics from
+ * @stats: statistics entry to be updated
+ **/
+static void i40e_get_netdev_stats_struct_tx(struct i40e_ring *ring,
+ struct rtnl_link_stats64 *stats)
+{
+ u64 bytes, packets;
+ unsigned int start;
+
+ do {
+ start = u64_stats_fetch_begin_irq(&ring->syncp);
+ packets = ring->stats.packets;
+ bytes = ring->stats.bytes;
+ } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
+
+ stats->tx_packets += packets;
+ stats->tx_bytes += bytes;
+}
+
+/**
* i40e_get_netdev_stats_struct - Get statistics for netdev interface
* @netdev: network interface device structure
*
@@ -437,15 +458,8 @@ static void i40e_get_netdev_stats_struct(struct net_device *netdev,
tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
if (!tx_ring)
continue;
+ i40e_get_netdev_stats_struct_tx(tx_ring, stats);
- do {
- start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
- packets = tx_ring->stats.packets;
- bytes = tx_ring->stats.bytes;
- } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
-
- stats->tx_packets += packets;
- stats->tx_bytes += bytes;
rx_ring = &tx_ring[1];
do {
@@ -456,6 +470,9 @@ static void i40e_get_netdev_stats_struct(struct net_device *netdev,
stats->rx_packets += packets;
stats->rx_bytes += bytes;
+
+ if (i40e_enabled_xdp_vsi(vsi))
+ i40e_get_netdev_stats_struct_tx(&rx_ring[1], stats);
}
rcu_read_unlock();
@@ -2814,6 +2831,12 @@ static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
for (i = 0; i < vsi->num_queue_pairs && !err; i++)
err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
+ if (!i40e_enabled_xdp_vsi(vsi))
+ return err;
+
+ for (i = 0; i < vsi->num_queue_pairs && !err; i++)
+ err = i40e_setup_tx_descriptors(vsi->xdp_rings[i]);
+
return err;
}
@@ -2827,12 +2850,17 @@ static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
{
int i;
- if (!vsi->tx_rings)
- return;
+ if (vsi->tx_rings) {
+ for (i = 0; i < vsi->num_queue_pairs; i++)
+ if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
+ i40e_free_tx_resources(vsi->tx_rings[i]);
+ }
- for (i = 0; i < vsi->num_queue_pairs; i++)
- if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
- i40e_free_tx_resources(vsi->tx_rings[i]);
+ if (vsi->xdp_rings) {
+ for (i = 0; i < vsi->num_queue_pairs; i++)
+ if (vsi->xdp_rings[i] && vsi->xdp_rings[i]->desc)
+ i40e_free_tx_resources(vsi->xdp_rings[i]);
+ }
}
/**
@@ -3093,6 +3121,12 @@ static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
err = i40e_configure_tx_ring(vsi->tx_rings[i]);
+ if (!i40e_enabled_xdp_vsi(vsi))
+ return err;
+
+ for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
+ err = i40e_configure_tx_ring(vsi->xdp_rings[i]);
+
return err;
}
@@ -3237,6 +3271,7 @@ static int i40e_vsi_configure(struct i40e_vsi *vsi)
**/
static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
{
+ bool has_xdp = i40e_enabled_xdp_vsi(vsi);
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
u16 vector;
@@ -3267,28 +3302,40 @@ static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
/* Linked list for the queuepairs assigned to this vector */
wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
for (q = 0; q < q_vector->num_ringpairs; q++) {
+ u32 nextqp = has_xdp ? qp + vsi->alloc_queue_pairs : qp;
u32 val;
val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
- (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
- (vector << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
- (qp << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
- (I40E_QUEUE_TYPE_TX
- << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
+ (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
+ (vector << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
+ (nextqp << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
+ (I40E_QUEUE_TYPE_TX <<
+ I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
wr32(hw, I40E_QINT_RQCTL(qp), val);
+ if (has_xdp) {
+ val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
+ (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
+ (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
+ (qp << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT) |
+ (I40E_QUEUE_TYPE_TX <<
+ I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
+
+ wr32(hw, I40E_QINT_TQCTL(nextqp), val);
+ }
+
val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
- (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
- (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
- ((qp+1) << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
- (I40E_QUEUE_TYPE_RX
- << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
+ (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
+ (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
+ ((qp + 1) << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT) |
+ (I40E_QUEUE_TYPE_RX <<
+ I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
/* Terminate the linked list */
if (q == (q_vector->num_ringpairs - 1))
- val |= (I40E_QUEUE_END_OF_LIST
- << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
+ val |= (I40E_QUEUE_END_OF_LIST <<
+ I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
wr32(hw, I40E_QINT_TQCTL(qp), val);
qp++;
@@ -3342,6 +3389,7 @@ static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
**/
static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
{
+ u32 nextqp = i40e_enabled_xdp_vsi(vsi) ? vsi->alloc_queue_pairs : 0;
struct i40e_q_vector *q_vector = vsi->q_vectors[0];
struct i40e_pf *pf = vsi->back;
struct i40e_hw *hw = &pf->hw;
@@ -3362,12 +3410,22 @@ static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
wr32(hw, I40E_PFINT_LNKLST0, 0);
/* Associate the queue pair to the vector and enable the queue int */
- val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
- (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
+ val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
+ (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
+ (nextqp << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
(I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
wr32(hw, I40E_QINT_RQCTL(0), val);
+ if (i40e_enabled_xdp_vsi(vsi)) {
+ val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
+ (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)|
+ (I40E_QUEUE_TYPE_TX
+ << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
+
+ wr32(hw, I40E_QINT_TQCTL(nextqp), val);
+ }
+
val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
(I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
(I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
@@ -3534,6 +3592,9 @@ static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
for (i = 0; i < vsi->num_queue_pairs; i++) {
wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
+ if (!i40e_enabled_xdp_vsi(vsi))
+ continue;
+ wr32(hw, I40E_QINT_TQCTL(vsi->xdp_rings[i]->reg_idx), 0);
}
if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
@@ -3836,6 +3897,16 @@ static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
q_vector->tx.ring = tx_ring;
q_vector->tx.count++;
+ /* Place XDP Tx ring in the same q_vector ring list as regular Tx */
+ if (i40e_enabled_xdp_vsi(vsi)) {
+ struct i40e_ring *xdp_ring = vsi->xdp_rings[qp_idx];
+
+ xdp_ring->q_vector = q_vector;
+ xdp_ring->next = q_vector->tx.ring;
+ q_vector->tx.ring = xdp_ring;
+ q_vector->tx.count++;
+ }
+
rx_ring->q_vector = q_vector;
rx_ring->next = q_vector->rx.ring;
q_vector->rx.ring = rx_ring;
@@ -4015,6 +4086,33 @@ static void i40e_control_tx_q(struct i40e_pf *pf, int pf_q, bool enable)
}
/**
+ * i40e_control_wait_tx_q - Start/stop Tx queue and wait for completion
+ * @seid: VSI SEID
+ * @pf: the PF structure
+ * @pf_q: the PF queue to configure
+ * @is_xdp: true if the queue is used for XDP
+ * @enable: start or stop the queue
+ **/
+static int i40e_control_wait_tx_q(int seid, struct i40e_pf *pf, int pf_q,
+ bool is_xdp, bool enable)
+{
+ int ret;
+
+ i40e_control_tx_q(pf, pf_q, enable);
+
+ /* wait for the change to finish */
+ ret = i40e_pf_txq_wait(pf, pf_q, enable);
+ if (ret) {
+ dev_info(&pf->pdev->dev,
+ "VSI seid %d %sTx ring %d %sable timeout\n",
+ seid, (is_xdp ? "XDP " : ""), pf_q,
+ (enable ? "en" : "dis"));
+ }
+
+ return ret;
+}
+
+/**
* i40e_vsi_control_tx - Start or stop a VSI's rings
* @vsi: the VSI being configured
* @enable: start or stop the rings
@@ -4026,16 +4124,20 @@ static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
pf_q = vsi->base_queue;
for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
- i40e_control_tx_q(pf, pf_q, enable);
+ ret = i40e_control_wait_tx_q(vsi->seid, pf,
+ pf_q,
+ false /*is xdp*/, enable);
+ if (ret)
+ break;
- /* wait for the change to finish */
- ret = i40e_pf_txq_wait(pf, pf_q, enable);
- if (ret) {
- dev_info(&pf->pdev->dev,
- "VSI seid %d Tx ring %d %sable timeout\n",
- vsi->seid, pf_q, (enable ? "en" : "dis"));
+ if (!i40e_enabled_xdp_vsi(vsi))
+ continue;
+
+ ret = i40e_control_wait_tx_q(vsi->seid, pf,
+ pf_q + vsi->alloc_queue_pairs,
+ true /*is xdp*/, enable);
+ if (ret)
break;
- }
}
return ret;
@@ -4547,7 +4649,21 @@ int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
vsi->seid, pf_q);
return ret;
}
- /* Check and wait for the Tx queue */
+
+ if (!i40e_enabled_xdp_vsi(vsi))
+ goto wait_rx;
+
+ /* Check and wait for the XDP Tx queue */
+ ret = i40e_pf_txq_wait(pf, pf_q + vsi->alloc_queue_pairs,
+ false);
+ if (ret) {
+ dev_info(&pf->pdev->dev,
+ "VSI seid %d XDP Tx ring %d disable timeout\n",
+ vsi->seid, pf_q);
+ return ret;
+ }
+wait_rx:
+ /* Check and wait for the Rx queue */
ret = i40e_pf_rxq_wait(pf, pf_q, false);
if (ret) {
dev_info(&pf->pdev->dev,
@@ -5466,6 +5582,8 @@ void i40e_down(struct i40e_vsi *vsi)
for (i = 0; i < vsi->num_queue_pairs; i++) {
i40e_clean_tx_ring(vsi->tx_rings[i]);
+ if (i40e_enabled_xdp_vsi(vsi))
+ i40e_clean_tx_ring(vsi->xdp_rings[i]);
i40e_clean_rx_ring(vsi->rx_rings[i]);
}
@@ -7535,15 +7653,22 @@ static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
**/
static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
{
+ struct i40e_ring **next_rings;
int size;
int ret = 0;
- /* allocate memory for both Tx and Rx ring pointers */
- size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
+ /* allocate memory for both Tx, XDP Tx and Rx ring pointers */
+ size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs *
+ (i40e_enabled_xdp_vsi(vsi) ? 3 : 2);
vsi->tx_rings = kzalloc(size, GFP_KERNEL);
if (!vsi->tx_rings)
return -ENOMEM;
- vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
+ next_rings = vsi->tx_rings + vsi->alloc_queue_pairs;
+ if (i40e_enabled_xdp_vsi(vsi)) {
+ vsi->xdp_rings = next_rings;
+ next_rings += vsi->alloc_queue_pairs;
+ }
+ vsi->rx_rings = next_rings;
if (alloc_qvectors) {
/* allocate memory for q_vector pointers */
@@ -7663,6 +7788,7 @@ static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
kfree(vsi->tx_rings);
vsi->tx_rings = NULL;
vsi->rx_rings = NULL;
+ vsi->xdp_rings = NULL;
}
/**
@@ -7746,6 +7872,8 @@ static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
kfree_rcu(vsi->tx_rings[i], rcu);
vsi->tx_rings[i] = NULL;
vsi->rx_rings[i] = NULL;
+ if (vsi->xdp_rings)
+ vsi->xdp_rings[i] = NULL;
}
}
}
@@ -7756,43 +7884,61 @@ static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
**/
static int i40e_alloc_rings(struct i40e_vsi *vsi)
{
- struct i40e_ring *tx_ring, *rx_ring;
+ int i, qpv = i40e_enabled_xdp_vsi(vsi) ? 3 : 2;
struct i40e_pf *pf = vsi->back;
- int i;
+ struct i40e_ring *ring;
/* Set basic values in the rings to be used later during open() */
for (i = 0; i < vsi->alloc_queue_pairs; i++) {
/* allocate space for both Tx and Rx in one shot */
- tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
- if (!tx_ring)
+ ring = kcalloc(qpv, sizeof(struct i40e_ring), GFP_KERNEL);
+ if (!ring)
goto err_out;
- tx_ring->queue_index = i;
- tx_ring->reg_idx = vsi->base_queue + i;
- tx_ring->ring_active = false;
- tx_ring->vsi = vsi;
- tx_ring->netdev = vsi->netdev;
- tx_ring->dev = &pf->pdev->dev;
- tx_ring->count = vsi->num_desc;
- tx_ring->size = 0;
- tx_ring->dcb_tc = 0;
+ ring->queue_index = i;
+ ring->reg_idx = vsi->base_queue + i;
+ ring->ring_active = false;
+ ring->vsi = vsi;
+ ring->netdev = vsi->netdev;
+ ring->dev = &pf->pdev->dev;
+ ring->count = vsi->num_desc;
+ ring->size = 0;
+ ring->dcb_tc = 0;
if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
- tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
- tx_ring->tx_itr_setting = pf->tx_itr_default;
- vsi->tx_rings[i] = tx_ring;
-
- rx_ring = &tx_ring[1];
- rx_ring->queue_index = i;
- rx_ring->reg_idx = vsi->base_queue + i;
- rx_ring->ring_active = false;
- rx_ring->vsi = vsi;
- rx_ring->netdev = vsi->netdev;
- rx_ring->dev = &pf->pdev->dev;
- rx_ring->count = vsi->num_desc;
- rx_ring->size = 0;
- rx_ring->dcb_tc = 0;
- rx_ring->rx_itr_setting = pf->rx_itr_default;
- vsi->rx_rings[i] = rx_ring;
+ ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
+ ring->tx_itr_setting = pf->tx_itr_default;
+ vsi->tx_rings[i] = ring++;
+
+ if (!i40e_enabled_xdp_vsi(vsi))
+ goto setup_rx;
+
+ ring->queue_index = vsi->alloc_queue_pairs + i;
+ ring->reg_idx = vsi->base_queue + ring->queue_index;
+ ring->ring_active = false;
+ ring->vsi = vsi;
+ ring->netdev = NULL;
+ ring->dev = &pf->pdev->dev;
+ ring->count = vsi->num_desc;
+ ring->size = 0;
+ ring->dcb_tc = 0;
+ if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
+ ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
+ set_ring_xdp(ring);
+ ring->tx_itr_setting = pf->tx_itr_default;
+ vsi->xdp_rings[i] = ring++;
+
+setup_rx:
+ ring->queue_index = i;
+ ring->reg_idx = vsi->base_queue + i;
+ ring->ring_active = false;
+ ring->vsi = vsi;
+ ring->netdev = vsi->netdev;
+ ring->dev = &pf->pdev->dev;
+ ring->count = vsi->num_desc;
+ ring->size = 0;
+ ring->dcb_tc = 0;
+ ring->rx_itr_setting = pf->rx_itr_default;
+ vsi->rx_rings[i] = ring;
}
return 0;
@@ -9998,6 +10144,7 @@ vector_setup_out:
**/
static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
{
+ u16 alloc_queue_pairs;
struct i40e_pf *pf;
u8 enabled_tc;
int ret;
@@ -10016,11 +10163,14 @@ static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
if (ret)
goto err_vsi;
- ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
+ alloc_queue_pairs = vsi->alloc_queue_pairs *
+ (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
+
+ ret = i40e_get_lump(pf, pf->qp_pile, alloc_queue_pairs, vsi->idx);
if (ret < 0) {
dev_info(&pf->pdev->dev,
"failed to get tracking for %d queues for VSI %d err %d\n",
- vsi->alloc_queue_pairs, vsi->seid, ret);
+ alloc_queue_pairs, vsi->seid, ret);
goto err_vsi;
}
vsi->base_queue = ret;
@@ -10076,6 +10226,7 @@ struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
{
struct i40e_vsi *vsi = NULL;
struct i40e_veb *veb = NULL;
+ u16 alloc_queue_pairs;
int ret, i;
int v_idx;
@@ -10163,12 +10314,14 @@ struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
else if (type == I40E_VSI_SRIOV)
vsi->vf_id = param1;
/* assign it some queues */
- ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
- vsi->idx);
+ alloc_queue_pairs = vsi->alloc_queue_pairs *
+ (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
+
+ ret = i40e_get_lump(pf, pf->qp_pile, alloc_queue_pairs, vsi->idx);
if (ret < 0) {
dev_info(&pf->pdev->dev,
"failed to get tracking for %d queues for VSI %d err=%d\n",
- vsi->alloc_queue_pairs, vsi->seid, ret);
+ alloc_queue_pairs, vsi->seid, ret);
goto err_vsi;
}
vsi->base_queue = ret;