2 * Copyright (c) 2015, Mellanox Technologies. All rights reserved.
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33 #include <linux/irq.h>
37 static inline bool mlx5e_channel_no_affinity_change(struct mlx5e_channel *c)
39 int current_cpu = smp_processor_id();
40 const struct cpumask *aff;
41 struct irq_data *idata;
43 idata = irq_desc_get_irq_data(c->irq_desc);
44 aff = irq_data_get_affinity_mask(idata);
45 return cpumask_test_cpu(current_cpu, aff);
48 static void mlx5e_handle_tx_dim(struct mlx5e_txqsq *sq)
50 struct mlx5e_sq_stats *stats = sq->stats;
51 struct net_dim_sample dim_sample;
53 if (unlikely(!test_bit(MLX5E_SQ_STATE_AM, &sq->state)))
56 net_dim_sample(sq->cq.event_ctr, stats->packets, stats->bytes,
58 net_dim(&sq->dim, dim_sample);
61 static void mlx5e_handle_rx_dim(struct mlx5e_rq *rq)
63 struct mlx5e_rq_stats *stats = rq->stats;
64 struct net_dim_sample dim_sample;
66 if (unlikely(!test_bit(MLX5E_RQ_STATE_AM, &rq->state)))
69 net_dim_sample(rq->cq.event_ctr, stats->packets, stats->bytes,
71 net_dim(&rq->dim, dim_sample);
74 int mlx5e_napi_poll(struct napi_struct *napi, int budget)
76 struct mlx5e_channel *c = container_of(napi, struct mlx5e_channel,
78 struct mlx5e_ch_stats *ch_stats = c->stats;
85 for (i = 0; i < c->num_tc; i++)
86 busy |= mlx5e_poll_tx_cq(&c->sq[i].cq, budget);
88 busy |= mlx5e_poll_xdpsq_cq(&c->xdpsq.cq);
91 busy |= mlx5e_poll_xdpsq_cq(&c->rq.xdpsq.cq);
93 if (likely(budget)) { /* budget=0 means: don't poll rx rings */
94 work_done = mlx5e_poll_rx_cq(&c->rq.cq, budget);
95 busy |= work_done == budget;
98 busy |= c->rq.post_wqes(&c->rq);
101 if (likely(mlx5e_channel_no_affinity_change(c)))
103 ch_stats->aff_change++;
104 if (budget && work_done == budget)
108 if (unlikely(!napi_complete_done(napi, work_done)))
113 for (i = 0; i < c->num_tc; i++) {
114 mlx5e_handle_tx_dim(&c->sq[i]);
115 mlx5e_cq_arm(&c->sq[i].cq);
118 mlx5e_handle_rx_dim(&c->rq);
120 mlx5e_cq_arm(&c->rq.cq);
121 mlx5e_cq_arm(&c->icosq.cq);
122 mlx5e_cq_arm(&c->xdpsq.cq);
127 void mlx5e_completion_event(struct mlx5_core_cq *mcq)
129 struct mlx5e_cq *cq = container_of(mcq, struct mlx5e_cq, mcq);
131 napi_schedule(cq->napi);
133 cq->channel->stats->events++;
136 void mlx5e_cq_error_event(struct mlx5_core_cq *mcq, enum mlx5_event event)
138 struct mlx5e_cq *cq = container_of(mcq, struct mlx5e_cq, mcq);
139 struct mlx5e_channel *c = cq->channel;
140 struct net_device *netdev = c->netdev;
142 netdev_err(netdev, "%s: cqn=0x%.6x event=0x%.2x\n",
143 __func__, mcq->cqn, event);