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2024年1月17日发(作者：)

829363738394041int ixgbe_poll( 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; int per_ring_budget; bool clean_complete = true ;

#ifdef CONFIG_IXGBE_DCA if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) ixgbe_update_dca(q_vector);#endif//清理写 ixgbe_for_each_ring(ring, q_vector->tx) 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 */ if (q_vector-> > 1) per_ring_budget = max(budget/q_vector->, 1); else per_ring_budget = budget;//读数据，并清理已完成的 ixgbe_for_each_ring(ring, q_vector->rx) clean_complete &= ixgbe_clean_rx_irq(q_vector, ring, per_ring_budget);

/* If all work not completed, return budget and keep polling */ if (!clean_complete) return budget;

/* all work done, exit the polling mode */ napi_complete(napi); if (adapter->rx_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 0;}

本文标签： 驱动网卡分析

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