1
2
3#include <linux/debugfs.h>
4#include <linux/module.h>
5#include <linux/rtnetlink.h>
6
7#include "nfp_net.h"
8
9static struct dentry *nfp_dir;
10
11static int nfp_rx_q_show(struct seq_file *file, void *data)
12{
13 struct nfp_net_r_vector *r_vec = file->private;
14 struct nfp_net_rx_ring *rx_ring;
15 int fl_rd_p, fl_wr_p, rxd_cnt;
16 struct nfp_net_rx_desc *rxd;
17 struct nfp_net *nn;
18 void *frag;
19 int i;
20
21 rtnl_lock();
22
23 if (!r_vec->nfp_net || !r_vec->rx_ring)
24 goto out;
25 nn = r_vec->nfp_net;
26 rx_ring = r_vec->rx_ring;
27 if (!nfp_net_running(nn))
28 goto out;
29
30 rxd_cnt = rx_ring->cnt;
31
32 fl_rd_p = nfp_qcp_rd_ptr_read(rx_ring->qcp_fl);
33 fl_wr_p = nfp_qcp_wr_ptr_read(rx_ring->qcp_fl);
34
35 seq_printf(file, "RX[%02d,%02d]: cnt=%u dma=%pad host=%p H_RD=%u H_WR=%u FL_RD=%u FL_WR=%u\n",
36 rx_ring->idx, rx_ring->fl_qcidx,
37 rx_ring->cnt, &rx_ring->dma, rx_ring->rxds,
38 rx_ring->rd_p, rx_ring->wr_p, fl_rd_p, fl_wr_p);
39
40 for (i = 0; i < rxd_cnt; i++) {
41 rxd = &rx_ring->rxds[i];
42 seq_printf(file, "%04d: 0x%08x 0x%08x", i,
43 rxd->vals[0], rxd->vals[1]);
44
45 frag = READ_ONCE(rx_ring->rxbufs[i].frag);
46 if (frag)
47 seq_printf(file, " frag=%p", frag);
48
49 if (rx_ring->rxbufs[i].dma_addr)
50 seq_printf(file, " dma_addr=%pad",
51 &rx_ring->rxbufs[i].dma_addr);
52
53 if (i == rx_ring->rd_p % rxd_cnt)
54 seq_puts(file, " H_RD ");
55 if (i == rx_ring->wr_p % rxd_cnt)
56 seq_puts(file, " H_WR ");
57 if (i == fl_rd_p % rxd_cnt)
58 seq_puts(file, " FL_RD");
59 if (i == fl_wr_p % rxd_cnt)
60 seq_puts(file, " FL_WR");
61
62 seq_putc(file, '\n');
63 }
64out:
65 rtnl_unlock();
66 return 0;
67}
68DEFINE_SHOW_ATTRIBUTE(nfp_rx_q);
69
70static int nfp_tx_q_show(struct seq_file *file, void *data);
71DEFINE_SHOW_ATTRIBUTE(nfp_tx_q);
72
73static int nfp_tx_q_show(struct seq_file *file, void *data)
74{
75 struct nfp_net_r_vector *r_vec = file->private;
76 struct nfp_net_tx_ring *tx_ring;
77 struct nfp_net_tx_desc *txd;
78 int d_rd_p, d_wr_p, txd_cnt;
79 struct nfp_net *nn;
80 int i;
81
82 rtnl_lock();
83
84 if (debugfs_real_fops(file->file) == &nfp_tx_q_fops)
85 tx_ring = r_vec->tx_ring;
86 else
87 tx_ring = r_vec->xdp_ring;
88 if (!r_vec->nfp_net || !tx_ring)
89 goto out;
90 nn = r_vec->nfp_net;
91 if (!nfp_net_running(nn))
92 goto out;
93
94 txd_cnt = tx_ring->cnt;
95
96 d_rd_p = nfp_qcp_rd_ptr_read(tx_ring->qcp_q);
97 d_wr_p = nfp_qcp_wr_ptr_read(tx_ring->qcp_q);
98
99 seq_printf(file, "TX[%02d,%02d%s]: cnt=%u dma=%pad host=%p H_RD=%u H_WR=%u D_RD=%u D_WR=%u\n",
100 tx_ring->idx, tx_ring->qcidx,
101 tx_ring == r_vec->tx_ring ? "" : "xdp",
102 tx_ring->cnt, &tx_ring->dma, tx_ring->txds,
103 tx_ring->rd_p, tx_ring->wr_p, d_rd_p, d_wr_p);
104
105 for (i = 0; i < txd_cnt; i++) {
106 txd = &tx_ring->txds[i];
107 seq_printf(file, "%04d: 0x%08x 0x%08x 0x%08x 0x%08x", i,
108 txd->vals[0], txd->vals[1],
109 txd->vals[2], txd->vals[3]);
110
111 if (tx_ring == r_vec->tx_ring) {
112 struct sk_buff *skb = READ_ONCE(tx_ring->txbufs[i].skb);
113
114 if (skb)
115 seq_printf(file, " skb->head=%p skb->data=%p",
116 skb->head, skb->data);
117 } else {
118 seq_printf(file, " frag=%p",
119 READ_ONCE(tx_ring->txbufs[i].frag));
120 }
121
122 if (tx_ring->txbufs[i].dma_addr)
123 seq_printf(file, " dma_addr=%pad",
124 &tx_ring->txbufs[i].dma_addr);
125
126 if (i == tx_ring->rd_p % txd_cnt)
127 seq_puts(file, " H_RD");
128 if (i == tx_ring->wr_p % txd_cnt)
129 seq_puts(file, " H_WR");
130 if (i == d_rd_p % txd_cnt)
131 seq_puts(file, " D_RD");
132 if (i == d_wr_p % txd_cnt)
133 seq_puts(file, " D_WR");
134
135 seq_putc(file, '\n');
136 }
137out:
138 rtnl_unlock();
139 return 0;
140}
141
142static int nfp_xdp_q_show(struct seq_file *file, void *data)
143{
144 return nfp_tx_q_show(file, data);
145}
146DEFINE_SHOW_ATTRIBUTE(nfp_xdp_q);
147
148void nfp_net_debugfs_vnic_add(struct nfp_net *nn, struct dentry *ddir)
149{
150 struct dentry *queues, *tx, *rx, *xdp;
151 char name[20];
152 int i;
153
154 if (IS_ERR_OR_NULL(nfp_dir))
155 return;
156
157 if (nfp_net_is_data_vnic(nn))
158 sprintf(name, "vnic%d", nn->id);
159 else
160 strcpy(name, "ctrl-vnic");
161 nn->debugfs_dir = debugfs_create_dir(name, ddir);
162
163
164 queues = debugfs_create_dir("queue", nn->debugfs_dir);
165
166 rx = debugfs_create_dir("rx", queues);
167 tx = debugfs_create_dir("tx", queues);
168 xdp = debugfs_create_dir("xdp", queues);
169
170 for (i = 0; i < min(nn->max_rx_rings, nn->max_r_vecs); i++) {
171 sprintf(name, "%d", i);
172 debugfs_create_file(name, 0400, rx,
173 &nn->r_vecs[i], &nfp_rx_q_fops);
174 debugfs_create_file(name, 0400, xdp,
175 &nn->r_vecs[i], &nfp_xdp_q_fops);
176 }
177
178 for (i = 0; i < min(nn->max_tx_rings, nn->max_r_vecs); i++) {
179 sprintf(name, "%d", i);
180 debugfs_create_file(name, 0400, tx,
181 &nn->r_vecs[i], &nfp_tx_q_fops);
182 }
183}
184
185struct dentry *nfp_net_debugfs_device_add(struct pci_dev *pdev)
186{
187 return debugfs_create_dir(pci_name(pdev), nfp_dir);
188}
189
190void nfp_net_debugfs_dir_clean(struct dentry **dir)
191{
192 debugfs_remove_recursive(*dir);
193 *dir = NULL;
194}
195
196void nfp_net_debugfs_create(void)
197{
198 nfp_dir = debugfs_create_dir("nfp_net", NULL);
199}
200
201void nfp_net_debugfs_destroy(void)
202{
203 debugfs_remove_recursive(nfp_dir);
204 nfp_dir = NULL;
205}
206
