aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/ixgbe/ixgbe_main.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/ixgbe/ixgbe_main.c')
-rw-r--r--drivers/net/ixgbe/ixgbe_main.c222
1 files changed, 118 insertions, 104 deletions
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index ed8d14163c1..d396c6e01fb 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -2314,68 +2314,61 @@ static void ixgbe_reset_task(struct work_struct *work)
ixgbe_reinit_locked(adapter);
}
-static void ixgbe_set_num_queues(struct ixgbe_adapter *adapter)
+#ifdef CONFIG_IXGBE_DCB
+static inline bool ixgbe_set_dcb_queues(struct ixgbe_adapter *adapter)
{
- int nrq = 1, ntq = 1;
- int feature_mask = 0, rss_i, rss_m;
- int dcb_i, dcb_m;
+ bool ret = false;
- /* Number of supported queues */
- switch (adapter->hw.mac.type) {
- case ixgbe_mac_82598EB:
- dcb_i = adapter->ring_feature[RING_F_DCB].indices;
- dcb_m = 0;
- rss_i = adapter->ring_feature[RING_F_RSS].indices;
- rss_m = 0;
- feature_mask |= IXGBE_FLAG_RSS_ENABLED;
- feature_mask |= IXGBE_FLAG_DCB_ENABLED;
-
- switch (adapter->flags & feature_mask) {
- case (IXGBE_FLAG_RSS_ENABLED | IXGBE_FLAG_DCB_ENABLED):
- dcb_m = 0x7 << 3;
- rss_i = min(8, rss_i);
- rss_m = 0x7;
- nrq = dcb_i * rss_i;
- ntq = min(MAX_TX_QUEUES, dcb_i * rss_i);
- break;
- case (IXGBE_FLAG_DCB_ENABLED):
- dcb_m = 0x7 << 3;
- nrq = dcb_i;
- ntq = dcb_i;
- break;
- case (IXGBE_FLAG_RSS_ENABLED):
- rss_m = 0xF;
- nrq = rss_i;
- ntq = rss_i;
- break;
- case 0:
- default:
- dcb_i = 0;
- dcb_m = 0;
- rss_i = 0;
- rss_m = 0;
- nrq = 1;
- ntq = 1;
- break;
- }
+ if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
+ adapter->ring_feature[RING_F_DCB].mask = 0x7 << 3;
+ adapter->num_rx_queues =
+ adapter->ring_feature[RING_F_DCB].indices;
+ adapter->num_tx_queues =
+ adapter->ring_feature[RING_F_DCB].indices;
+ ret = true;
+ } else {
+ adapter->ring_feature[RING_F_DCB].mask = 0;
+ adapter->ring_feature[RING_F_DCB].indices = 0;
+ ret = false;
+ }
- /* Sanity check, we should never have zero queues */
- nrq = (nrq ?:1);
- ntq = (ntq ?:1);
+ return ret;
+}
+#endif
- adapter->ring_feature[RING_F_DCB].indices = dcb_i;
- adapter->ring_feature[RING_F_DCB].mask = dcb_m;
- adapter->ring_feature[RING_F_RSS].indices = rss_i;
- adapter->ring_feature[RING_F_RSS].mask = rss_m;
- break;
- default:
- nrq = 1;
- ntq = 1;
- break;
+static inline bool ixgbe_set_rss_queues(struct ixgbe_adapter *adapter)
+{
+ bool ret = false;
+
+ if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
+ adapter->ring_feature[RING_F_RSS].mask = 0xF;
+ adapter->num_rx_queues =
+ adapter->ring_feature[RING_F_RSS].indices;
+ adapter->num_tx_queues =
+ adapter->ring_feature[RING_F_RSS].indices;
+ ret = true;
+ } else {
+ adapter->ring_feature[RING_F_RSS].mask = 0;
+ adapter->ring_feature[RING_F_RSS].indices = 0;
+ ret = false;
}
- adapter->num_rx_queues = nrq;
- adapter->num_tx_queues = ntq;
+ return ret;
+}
+
+static void ixgbe_set_num_queues(struct ixgbe_adapter *adapter)
+{
+ /* Start with base case */
+ adapter->num_rx_queues = 1;
+ adapter->num_tx_queues = 1;
+
+#ifdef CONFIG_IXGBE_DCB
+ if (ixgbe_set_dcb_queues(adapter))
+ return;
+
+#endif
+ if (ixgbe_set_rss_queues(adapter))
+ return;
}
static void ixgbe_acquire_msix_vectors(struct ixgbe_adapter *adapter,
@@ -2432,66 +2425,87 @@ static void ixgbe_acquire_msix_vectors(struct ixgbe_adapter *adapter,
}
/**
- * ixgbe_cache_ring_register - Descriptor ring to register mapping
+ * ixgbe_cache_ring_rss - Descriptor ring to register mapping for RSS
* @adapter: board private structure to initialize
*
- * Once we know the feature-set enabled for the device, we'll cache
- * the register offset the descriptor ring is assigned to.
+ * Cache the descriptor ring offsets for RSS to the assigned rings.
+ *
**/
-static void ixgbe_cache_ring_register(struct ixgbe_adapter *adapter)
+static inline bool ixgbe_cache_ring_rss(struct ixgbe_adapter *adapter)
{
- int feature_mask = 0, rss_i;
- int i, txr_idx, rxr_idx;
- int dcb_i;
+ int i;
+ bool ret = false;
- /* Number of supported queues */
- switch (adapter->hw.mac.type) {
- case ixgbe_mac_82598EB:
- dcb_i = adapter->ring_feature[RING_F_DCB].indices;
- rss_i = adapter->ring_feature[RING_F_RSS].indices;
- txr_idx = 0;
- rxr_idx = 0;
- feature_mask |= IXGBE_FLAG_DCB_ENABLED;
- feature_mask |= IXGBE_FLAG_RSS_ENABLED;
- switch (adapter->flags & feature_mask) {
- case (IXGBE_FLAG_RSS_ENABLED | IXGBE_FLAG_DCB_ENABLED):
- for (i = 0; i < dcb_i; i++) {
- int j;
- /* Rx first */
- for (j = 0; j < adapter->num_rx_queues; j++) {
- adapter->rx_ring[rxr_idx].reg_idx =
- i << 3 | j;
- rxr_idx++;
- }
- /* Tx now */
- for (j = 0; j < adapter->num_tx_queues; j++) {
- adapter->tx_ring[txr_idx].reg_idx =
- i << 2 | (j >> 1);
- if (j & 1)
- txr_idx++;
- }
- }
- case (IXGBE_FLAG_DCB_ENABLED):
+ if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
+ for (i = 0; i < adapter->num_rx_queues; i++)
+ adapter->rx_ring[i].reg_idx = i;
+ for (i = 0; i < adapter->num_tx_queues; i++)
+ adapter->tx_ring[i].reg_idx = i;
+ ret = true;
+ } else {
+ ret = false;
+ }
+
+ return ret;
+}
+
+#ifdef CONFIG_IXGBE_DCB
+/**
+ * ixgbe_cache_ring_dcb - Descriptor ring to register mapping for DCB
+ * @adapter: board private structure to initialize
+ *
+ * Cache the descriptor ring offsets for DCB to the assigned rings.
+ *
+ **/
+static inline bool ixgbe_cache_ring_dcb(struct ixgbe_adapter *adapter)
+{
+ int i;
+ bool ret = false;
+ int dcb_i = adapter->ring_feature[RING_F_DCB].indices;
+
+ if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
+ if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
/* the number of queues is assumed to be symmetric */
for (i = 0; i < dcb_i; i++) {
adapter->rx_ring[i].reg_idx = i << 3;
adapter->tx_ring[i].reg_idx = i << 2;
}
- break;
- case (IXGBE_FLAG_RSS_ENABLED):
- for (i = 0; i < adapter->num_rx_queues; i++)
- adapter->rx_ring[i].reg_idx = i;
- for (i = 0; i < adapter->num_tx_queues; i++)
- adapter->tx_ring[i].reg_idx = i;
- break;
- case 0:
- default:
- break;
+ ret = true;
+ } else {
+ ret = false;
}
- break;
- default:
- break;
+ } else {
+ ret = false;
}
+
+ return ret;
+}
+#endif
+
+/**
+ * ixgbe_cache_ring_register - Descriptor ring to register mapping
+ * @adapter: board private structure to initialize
+ *
+ * Once we know the feature-set enabled for the device, we'll cache
+ * the register offset the descriptor ring is assigned to.
+ *
+ * Note, the order the various feature calls is important. It must start with
+ * the "most" features enabled at the same time, then trickle down to the
+ * least amount of features turned on at once.
+ **/
+static void ixgbe_cache_ring_register(struct ixgbe_adapter *adapter)
+{
+ /* start with default case */
+ adapter->rx_ring[0].reg_idx = 0;
+ adapter->tx_ring[0].reg_idx = 0;
+
+#ifdef CONFIG_IXGBE_DCB
+ if (ixgbe_cache_ring_dcb(adapter))
+ return;
+
+#endif
+ if (ixgbe_cache_ring_rss(adapter))
+ return;
}
/**
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 02:49:49 +0000