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-rw-r--r--drivers/net/ethernet/intel/ixgbe/ixgbe.h7
-rw-r--r--drivers/net/ethernet/intel/ixgbe/ixgbe_main.c192
2 files changed, 60 insertions, 139 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
index 378ce46a7f92..dc3b12e15331 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
@@ -209,6 +209,7 @@ enum ixbge_ring_state_t {
#define clear_ring_rsc_enabled(ring) \
clear_bit(__IXGBE_RX_RSC_ENABLED, &(ring)->state)
struct ixgbe_ring {
+ struct ixgbe_ring *next; /* pointer to next ring in q_vector */
void *desc; /* descriptor ring memory */
struct device *dev; /* device for DMA mapping */
struct net_device *netdev; /* netdev ring belongs to */
@@ -277,11 +278,7 @@ struct ixgbe_ring_feature {
} ____cacheline_internodealigned_in_smp;
struct ixgbe_ring_container {
-#if MAX_RX_QUEUES > MAX_TX_QUEUES
- DECLARE_BITMAP(idx, MAX_RX_QUEUES);
-#else
- DECLARE_BITMAP(idx, MAX_TX_QUEUES);
-#endif
+ struct ixgbe_ring *ring; /* pointer to linked list of rings */
unsigned int total_bytes; /* total bytes processed this int */
unsigned int total_packets; /* total packets processed this int */
u16 work_limit; /* total work allowed per interrupt */
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index e5a4eb62b27c..bb54d3d28419 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -974,26 +974,17 @@ static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter,
static void ixgbe_update_dca(struct ixgbe_q_vector *q_vector)
{
struct ixgbe_adapter *adapter = q_vector->adapter;
+ struct ixgbe_ring *ring;
int cpu = get_cpu();
- long r_idx;
- int i;
if (q_vector->cpu == cpu)
goto out_no_update;
- r_idx = find_first_bit(q_vector->tx.idx, adapter->num_tx_queues);
- for (i = 0; i < q_vector->tx.count; i++) {
- ixgbe_update_tx_dca(adapter, adapter->tx_ring[r_idx], cpu);
- r_idx = find_next_bit(q_vector->tx.idx, adapter->num_tx_queues,
- r_idx + 1);
- }
+ for (ring = q_vector->tx.ring; ring != NULL; ring = ring->next)
+ ixgbe_update_tx_dca(adapter, ring, cpu);
- r_idx = find_first_bit(q_vector->rx.idx, adapter->num_rx_queues);
- for (i = 0; i < q_vector->rx.count; i++) {
- ixgbe_update_rx_dca(adapter, adapter->rx_ring[r_idx], cpu);
- r_idx = find_next_bit(q_vector->rx.idx, adapter->num_rx_queues,
- r_idx + 1);
- }
+ for (ring = q_vector->rx.ring; ring != NULL; ring = ring->next)
+ ixgbe_update_rx_dca(adapter, ring, cpu);
q_vector->cpu = cpu;
out_no_update:
@@ -1546,7 +1537,7 @@ static int ixgbe_clean_rxonly(struct napi_struct *, int);
static void ixgbe_configure_msix(struct ixgbe_adapter *adapter)
{
struct ixgbe_q_vector *q_vector;
- int i, q_vectors, v_idx, r_idx;
+ int q_vectors, v_idx;
u32 mask;
q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
@@ -1556,33 +1547,19 @@ static void ixgbe_configure_msix(struct ixgbe_adapter *adapter)
* corresponding register.
*/
for (v_idx = 0; v_idx < q_vectors; v_idx++) {
+ struct ixgbe_ring *ring;
q_vector = adapter->q_vector[v_idx];
- /* XXX for_each_set_bit(...) */
- r_idx = find_first_bit(q_vector->rx.idx,
- adapter->num_rx_queues);
-
- for (i = 0; i < q_vector->rx.count; i++) {
- u8 reg_idx = adapter->rx_ring[r_idx]->reg_idx;
- ixgbe_set_ivar(adapter, 0, reg_idx, v_idx);
- r_idx = find_next_bit(q_vector->rx.idx,
- adapter->num_rx_queues,
- r_idx + 1);
- }
- r_idx = find_first_bit(q_vector->tx.idx,
- adapter->num_tx_queues);
-
- for (i = 0; i < q_vector->tx.count; i++) {
- u8 reg_idx = adapter->tx_ring[r_idx]->reg_idx;
- ixgbe_set_ivar(adapter, 1, reg_idx, v_idx);
- r_idx = find_next_bit(q_vector->tx.idx,
- adapter->num_tx_queues,
- r_idx + 1);
- }
- if (q_vector->tx.count && !q_vector->rx.count)
+ for (ring = q_vector->rx.ring; ring != NULL; ring = ring->next)
+ ixgbe_set_ivar(adapter, 0, ring->reg_idx, v_idx);
+
+ for (ring = q_vector->tx.ring; ring != NULL; ring = ring->next)
+ ixgbe_set_ivar(adapter, 1, ring->reg_idx, v_idx);
+
+ if (q_vector->tx.ring && !q_vector->rx.ring)
/* tx only */
q_vector->eitr = adapter->tx_eitr_param;
- else if (q_vector->rx.count)
+ else if (q_vector->rx.ring)
/* rx or mixed */
q_vector->eitr = adapter->rx_eitr_param;
@@ -2006,20 +1983,10 @@ static inline void ixgbe_irq_disable_queues(struct ixgbe_adapter *adapter,
static irqreturn_t ixgbe_msix_clean_tx(int irq, void *data)
{
struct ixgbe_q_vector *q_vector = data;
- struct ixgbe_adapter *adapter = q_vector->adapter;
- struct ixgbe_ring *tx_ring;
- int i, r_idx;
if (!q_vector->tx.count)
return IRQ_HANDLED;
- r_idx = find_first_bit(q_vector->tx.idx, adapter->num_tx_queues);
- for (i = 0; i < q_vector->tx.count; i++) {
- tx_ring = adapter->tx_ring[r_idx];
- r_idx = find_next_bit(q_vector->tx.idx, adapter->num_tx_queues,
- r_idx + 1);
- }
-
/* EIAM disabled interrupts (on this vector) for us */
napi_schedule(&q_vector->napi);
@@ -2034,22 +2001,6 @@ static irqreturn_t ixgbe_msix_clean_tx(int irq, void *data)
static irqreturn_t ixgbe_msix_clean_rx(int irq, void *data)
{
struct ixgbe_q_vector *q_vector = data;
- struct ixgbe_adapter *adapter = q_vector->adapter;
- struct ixgbe_ring *rx_ring;
- int r_idx;
- int i;
-
-#ifdef CONFIG_IXGBE_DCA
- if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
- ixgbe_update_dca(q_vector);
-#endif
-
- r_idx = find_first_bit(q_vector->rx.idx, adapter->num_rx_queues);
- for (i = 0; i < q_vector->rx.count; i++) {
- rx_ring = adapter->rx_ring[r_idx];
- r_idx = find_next_bit(q_vector->rx.idx, adapter->num_rx_queues,
- r_idx + 1);
- }
if (!q_vector->rx.count)
return IRQ_HANDLED;
@@ -2063,28 +2014,10 @@ static irqreturn_t ixgbe_msix_clean_rx(int irq, void *data)
static irqreturn_t ixgbe_msix_clean_many(int irq, void *data)
{
struct ixgbe_q_vector *q_vector = data;
- struct ixgbe_adapter *adapter = q_vector->adapter;
- struct ixgbe_ring *ring;
- int r_idx;
- int i;
if (!q_vector->tx.count && !q_vector->rx.count)
return IRQ_HANDLED;
- r_idx = find_first_bit(q_vector->tx.idx, adapter->num_tx_queues);
- for (i = 0; i < q_vector->tx.count; i++) {
- ring = adapter->tx_ring[r_idx];
- r_idx = find_next_bit(q_vector->tx.idx, adapter->num_tx_queues,
- r_idx + 1);
- }
-
- r_idx = find_first_bit(q_vector->rx.idx, adapter->num_rx_queues);
- for (i = 0; i < q_vector->rx.count; i++) {
- ring = adapter->rx_ring[r_idx];
- r_idx = find_next_bit(q_vector->rx.idx, adapter->num_rx_queues,
- r_idx + 1);
- }
-
/* EIAM disabled interrupts (on this vector) for us */
napi_schedule(&q_vector->napi);
@@ -2104,19 +2037,14 @@ static int ixgbe_clean_rxonly(struct napi_struct *napi, int budget)
struct ixgbe_q_vector *q_vector =
container_of(napi, struct ixgbe_q_vector, napi);
struct ixgbe_adapter *adapter = q_vector->adapter;
- struct ixgbe_ring *rx_ring = NULL;
int work_done = 0;
- long r_idx;
#ifdef CONFIG_IXGBE_DCA
if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
ixgbe_update_dca(q_vector);
#endif
- r_idx = find_first_bit(q_vector->rx.idx, adapter->num_rx_queues);
- rx_ring = adapter->rx_ring[r_idx];
-
- ixgbe_clean_rx_irq(q_vector, rx_ring, &work_done, budget);
+ ixgbe_clean_rx_irq(q_vector, q_vector->rx.ring, &work_done, budget);
/* If all Rx work done, exit the polling mode */
if (work_done < budget) {
@@ -2144,38 +2072,29 @@ static int ixgbe_clean_rxtx_many(struct napi_struct *napi, int budget)
struct ixgbe_q_vector *q_vector =
container_of(napi, struct ixgbe_q_vector, napi);
struct ixgbe_adapter *adapter = q_vector->adapter;
- struct ixgbe_ring *ring = NULL;
- int work_done = 0, i;
- long r_idx;
- bool tx_clean_complete = true;
+ struct ixgbe_ring *ring;
+ int work_done = 0;
+ bool clean_complete = true;
#ifdef CONFIG_IXGBE_DCA
if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
ixgbe_update_dca(q_vector);
#endif
- r_idx = find_first_bit(q_vector->tx.idx, adapter->num_tx_queues);
- for (i = 0; i < q_vector->tx.count; i++) {
- ring = adapter->tx_ring[r_idx];
- tx_clean_complete &= ixgbe_clean_tx_irq(q_vector, ring);
- r_idx = find_next_bit(q_vector->tx.idx, adapter->num_tx_queues,
- r_idx + 1);
- }
+ for (ring = q_vector->tx.ring; ring != NULL; ring = ring->next)
+ clean_complete &= ixgbe_clean_tx_irq(q_vector, ring);
/* attempt to distribute budget to each queue fairly, but don't allow
* the budget to go below 1 because we'll exit polling */
budget /= (q_vector->rx.count ?: 1);
budget = max(budget, 1);
- r_idx = find_first_bit(q_vector->rx.idx, adapter->num_rx_queues);
- for (i = 0; i < q_vector->rx.count; i++) {
- ring = adapter->rx_ring[r_idx];
+
+ for (ring = q_vector->rx.ring; ring != NULL; ring = ring->next)
ixgbe_clean_rx_irq(q_vector, ring, &work_done, budget);
- r_idx = find_next_bit(q_vector->rx.idx, adapter->num_rx_queues,
- r_idx + 1);
- }
- r_idx = find_first_bit(q_vector->rx.idx, adapter->num_rx_queues);
- ring = adapter->rx_ring[r_idx];
+ if (!clean_complete)
+ work_done = budget;
+
/* If all Rx work done, exit the polling mode */
if (work_done < budget) {
napi_complete(napi);
@@ -2203,32 +2122,23 @@ static int ixgbe_clean_txonly(struct napi_struct *napi, int budget)
struct ixgbe_q_vector *q_vector =
container_of(napi, struct ixgbe_q_vector, napi);
struct ixgbe_adapter *adapter = q_vector->adapter;
- struct ixgbe_ring *tx_ring = NULL;
- int work_done = 0;
- long r_idx;
#ifdef CONFIG_IXGBE_DCA
if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
ixgbe_update_dca(q_vector);
#endif
- r_idx = find_first_bit(q_vector->tx.idx, adapter->num_tx_queues);
- tx_ring = adapter->tx_ring[r_idx];
-
- if (!ixgbe_clean_tx_irq(q_vector, tx_ring))
- work_done = budget;
+ if (!ixgbe_clean_tx_irq(q_vector, q_vector->tx.ring))
+ return budget;
/* If all Tx work done, exit the polling mode */
- if (work_done < budget) {
- napi_complete(napi);
- if (adapter->tx_itr_setting & 1)
- ixgbe_set_itr(q_vector);
- if (!test_bit(__IXGBE_DOWN, &adapter->state))
- ixgbe_irq_enable_queues(adapter,
- ((u64)1 << q_vector->v_idx));
- }
+ napi_complete(napi);
+ if (adapter->tx_itr_setting & 1)
+ ixgbe_set_itr(q_vector);
+ if (!test_bit(__IXGBE_DOWN, &adapter->state))
+ ixgbe_irq_enable_queues(adapter, ((u64)1 << q_vector->v_idx));
- return work_done;
+ return 0;
}
static inline void map_vector_to_rxq(struct ixgbe_adapter *a, int v_idx,
@@ -2237,9 +2147,10 @@ static inline void map_vector_to_rxq(struct ixgbe_adapter *a, int v_idx,
struct ixgbe_q_vector *q_vector = a->q_vector[v_idx];
struct ixgbe_ring *rx_ring = a->rx_ring[r_idx];
- set_bit(r_idx, q_vector->rx.idx);
- q_vector->rx.count++;
rx_ring->q_vector = q_vector;
+ rx_ring->next = q_vector->rx.ring;
+ q_vector->rx.ring = rx_ring;
+ q_vector->rx.count++;
}
static inline void map_vector_to_txq(struct ixgbe_adapter *a, int v_idx,
@@ -2248,9 +2159,10 @@ static inline void map_vector_to_txq(struct ixgbe_adapter *a, int v_idx,
struct ixgbe_q_vector *q_vector = a->q_vector[v_idx];
struct ixgbe_ring *tx_ring = a->tx_ring[t_idx];
- set_bit(t_idx, q_vector->tx.idx);
- q_vector->tx.count++;
tx_ring->q_vector = q_vector;
+ tx_ring->next = q_vector->tx.ring;
+ q_vector->tx.ring = tx_ring;
+ q_vector->tx.count++;
q_vector->tx.work_limit = a->tx_work_limit;
}
@@ -2508,14 +2420,26 @@ static irqreturn_t ixgbe_intr(int irq, void *data)
static inline void ixgbe_reset_q_vectors(struct ixgbe_adapter *adapter)
{
- int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
+ int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
+ int i;
+
+ /* legacy and MSI only use one vector */
+ if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
+ q_vectors = 1;
+
+ for (i = 0; i < adapter->num_rx_queues; i++) {
+ adapter->rx_ring[i]->q_vector = NULL;
+ adapter->rx_ring[i]->next = NULL;
+ }
+ for (i = 0; i < adapter->num_tx_queues; i++) {
+ adapter->tx_ring[i]->q_vector = NULL;
+ adapter->tx_ring[i]->next = NULL;
+ }
for (i = 0; i < q_vectors; i++) {
struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
- bitmap_zero(q_vector->rx.idx, MAX_RX_QUEUES);
- bitmap_zero(q_vector->tx.idx, MAX_TX_QUEUES);
- q_vector->rx.count = 0;
- q_vector->tx.count = 0;
+ memset(&q_vector->rx, 0, sizeof(struct ixgbe_ring_container));
+ memset(&q_vector->tx, 0, sizeof(struct ixgbe_ring_container));
}
}
@@ -5923,7 +5847,7 @@ static void ixgbe_check_hang_subtask(struct ixgbe_adapter *adapter)
/* get one bit for every active tx/rx interrupt vector */
for (i = 0; i < adapter->num_msix_vectors - NON_Q_VECTORS; i++) {
struct ixgbe_q_vector *qv = adapter->q_vector[i];
- if (qv->rx.count || qv->tx.count)
+ if (qv->rx.ring || qv->tx.ring)
eics |= ((u64)1 << i);
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 16:52:12 +0000