1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright (c) 2024 NVIDIA Corporation & Affiliates
3 */
4
5 #include <rte_bitops.h>
6
7 #include "rte_ethdev.h"
8 #include "ethdev_linux_ethtool.h"
9
10 /* Link modes sorted with index as defined in ethtool.
11 * Values are speed in Mbps with LSB indicating duplex.
12 *
13 * The ethtool bits definition should not change as it is a kernel API.
14 * Using raw numbers directly avoids checking API availability
15 * and allows to compile with new bits included even on an old kernel.
16 *
17 * The array below is built from bit definitions with this shell command:
18 * sed -rn 's;.*(ETHTOOL_LINK_MODE_)([0-9]+)([0-9a-zA-Z_]*).*= *([0-9]*).*;'\
19 * '[\4] = \2, /\* \1\2\3 *\/;p' /usr/include/linux/ethtool.h |
20 * awk '/_Half_/{$3=$3+1","}1'
21 */
22 static const uint32_t link_modes[] = {
23 [0] = 11, /* ETHTOOL_LINK_MODE_10baseT_Half_BIT */
24 [1] = 10, /* ETHTOOL_LINK_MODE_10baseT_Full_BIT */
25 [2] = 101, /* ETHTOOL_LINK_MODE_100baseT_Half_BIT */
26 [3] = 100, /* ETHTOOL_LINK_MODE_100baseT_Full_BIT */
27 [4] = 1001, /* ETHTOOL_LINK_MODE_1000baseT_Half_BIT */
28 [5] = 1000, /* ETHTOOL_LINK_MODE_1000baseT_Full_BIT */
29 [12] = 10000, /* ETHTOOL_LINK_MODE_10000baseT_Full_BIT */
30 [15] = 2500, /* ETHTOOL_LINK_MODE_2500baseX_Full_BIT */
31 [17] = 1000, /* ETHTOOL_LINK_MODE_1000baseKX_Full_BIT */
32 [18] = 10000, /* ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT */
33 [19] = 10000, /* ETHTOOL_LINK_MODE_10000baseKR_Full_BIT */
34 [20] = 10000, /* ETHTOOL_LINK_MODE_10000baseR_FEC_BIT */
35 [21] = 20000, /* ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT */
36 [22] = 20000, /* ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT */
37 [23] = 40000, /* ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT */
38 [24] = 40000, /* ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT */
39 [25] = 40000, /* ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT */
40 [26] = 40000, /* ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT */
41 [27] = 56000, /* ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT */
42 [28] = 56000, /* ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT */
43 [29] = 56000, /* ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT */
44 [30] = 56000, /* ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT */
45 [31] = 25000, /* ETHTOOL_LINK_MODE_25000baseCR_Full_BIT */
46 [32] = 25000, /* ETHTOOL_LINK_MODE_25000baseKR_Full_BIT */
47 [33] = 25000, /* ETHTOOL_LINK_MODE_25000baseSR_Full_BIT */
48 [34] = 50000, /* ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT */
49 [35] = 50000, /* ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT */
50 [36] = 100000, /* ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT */
51 [37] = 100000, /* ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT */
52 [38] = 100000, /* ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT */
53 [39] = 100000, /* ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT */
54 [40] = 50000, /* ETHTOOL_LINK_MODE_50000baseSR2_Full_BIT */
55 [41] = 1000, /* ETHTOOL_LINK_MODE_1000baseX_Full_BIT */
56 [42] = 10000, /* ETHTOOL_LINK_MODE_10000baseCR_Full_BIT */
57 [43] = 10000, /* ETHTOOL_LINK_MODE_10000baseSR_Full_BIT */
58 [44] = 10000, /* ETHTOOL_LINK_MODE_10000baseLR_Full_BIT */
59 [45] = 10000, /* ETHTOOL_LINK_MODE_10000baseLRM_Full_BIT */
60 [46] = 10000, /* ETHTOOL_LINK_MODE_10000baseER_Full_BIT */
61 [47] = 2500, /* ETHTOOL_LINK_MODE_2500baseT_Full_BIT */
62 [48] = 5000, /* ETHTOOL_LINK_MODE_5000baseT_Full_BIT */
63 [52] = 50000, /* ETHTOOL_LINK_MODE_50000baseKR_Full_BIT */
64 [53] = 50000, /* ETHTOOL_LINK_MODE_50000baseSR_Full_BIT */
65 [54] = 50000, /* ETHTOOL_LINK_MODE_50000baseCR_Full_BIT */
66 [55] = 50000, /* ETHTOOL_LINK_MODE_50000baseLR_ER_FR_Full_BIT */
67 [56] = 50000, /* ETHTOOL_LINK_MODE_50000baseDR_Full_BIT */
68 [57] = 100000, /* ETHTOOL_LINK_MODE_100000baseKR2_Full_BIT */
69 [58] = 100000, /* ETHTOOL_LINK_MODE_100000baseSR2_Full_BIT */
70 [59] = 100000, /* ETHTOOL_LINK_MODE_100000baseCR2_Full_BIT */
71 [60] = 100000, /* ETHTOOL_LINK_MODE_100000baseLR2_ER2_FR2_Full_BIT */
72 [61] = 100000, /* ETHTOOL_LINK_MODE_100000baseDR2_Full_BIT */
73 [62] = 200000, /* ETHTOOL_LINK_MODE_200000baseKR4_Full_BIT */
74 [63] = 200000, /* ETHTOOL_LINK_MODE_200000baseSR4_Full_BIT */
75 [64] = 200000, /* ETHTOOL_LINK_MODE_200000baseLR4_ER4_FR4_Full_BIT */
76 [65] = 200000, /* ETHTOOL_LINK_MODE_200000baseDR4_Full_BIT */
77 [66] = 200000, /* ETHTOOL_LINK_MODE_200000baseCR4_Full_BIT */
78 [67] = 100, /* ETHTOOL_LINK_MODE_100baseT1_Full_BIT */
79 [68] = 1000, /* ETHTOOL_LINK_MODE_1000baseT1_Full_BIT */
80 [69] = 400000, /* ETHTOOL_LINK_MODE_400000baseKR8_Full_BIT */
81 [70] = 400000, /* ETHTOOL_LINK_MODE_400000baseSR8_Full_BIT */
82 [71] = 400000, /* ETHTOOL_LINK_MODE_400000baseLR8_ER8_FR8_Full_BIT */
83 [72] = 400000, /* ETHTOOL_LINK_MODE_400000baseDR8_Full_BIT */
84 [73] = 400000, /* ETHTOOL_LINK_MODE_400000baseCR8_Full_BIT */
85 [75] = 100000, /* ETHTOOL_LINK_MODE_100000baseKR_Full_BIT */
86 [76] = 100000, /* ETHTOOL_LINK_MODE_100000baseSR_Full_BIT */
87 [77] = 100000, /* ETHTOOL_LINK_MODE_100000baseLR_ER_FR_Full_BIT */
88 [78] = 100000, /* ETHTOOL_LINK_MODE_100000baseCR_Full_BIT */
89 [79] = 100000, /* ETHTOOL_LINK_MODE_100000baseDR_Full_BIT */
90 [80] = 200000, /* ETHTOOL_LINK_MODE_200000baseKR2_Full_BIT */
91 [81] = 200000, /* ETHTOOL_LINK_MODE_200000baseSR2_Full_BIT */
92 [82] = 200000, /* ETHTOOL_LINK_MODE_200000baseLR2_ER2_FR2_Full_BIT */
93 [83] = 200000, /* ETHTOOL_LINK_MODE_200000baseDR2_Full_BIT */
94 [84] = 200000, /* ETHTOOL_LINK_MODE_200000baseCR2_Full_BIT */
95 [85] = 400000, /* ETHTOOL_LINK_MODE_400000baseKR4_Full_BIT */
96 [86] = 400000, /* ETHTOOL_LINK_MODE_400000baseSR4_Full_BIT */
97 [87] = 400000, /* ETHTOOL_LINK_MODE_400000baseLR4_ER4_FR4_Full_BIT */
98 [88] = 400000, /* ETHTOOL_LINK_MODE_400000baseDR4_Full_BIT */
99 [89] = 400000, /* ETHTOOL_LINK_MODE_400000baseCR4_Full_BIT */
100 [90] = 101, /* ETHTOOL_LINK_MODE_100baseFX_Half_BIT */
101 [91] = 100, /* ETHTOOL_LINK_MODE_100baseFX_Full_BIT */
102 [92] = 10, /* ETHTOOL_LINK_MODE_10baseT1L_Full_BIT */
103 [93] = 800000, /* ETHTOOL_LINK_MODE_800000baseCR8_Full_BIT */
104 [94] = 800000, /* ETHTOOL_LINK_MODE_800000baseKR8_Full_BIT */
105 [95] = 800000, /* ETHTOOL_LINK_MODE_800000baseDR8_Full_BIT */
106 [96] = 800000, /* ETHTOOL_LINK_MODE_800000baseDR8_2_Full_BIT */
107 [97] = 800000, /* ETHTOOL_LINK_MODE_800000baseSR8_Full_BIT */
108 [98] = 800000, /* ETHTOOL_LINK_MODE_800000baseVR8_Full_BIT */
109 [99] = 10, /* ETHTOOL_LINK_MODE_10baseT1S_Full_BIT */
110 [100] = 11, /* ETHTOOL_LINK_MODE_10baseT1S_Half_BIT */
111 [101] = 11, /* ETHTOOL_LINK_MODE_10baseT1S_P2MP_Half_BIT */
112 };
113
114 uint32_t
rte_eth_link_speed_ethtool(enum ethtool_link_mode_bit_indices bit)115 rte_eth_link_speed_ethtool(enum ethtool_link_mode_bit_indices bit)
116 {
117 uint32_t speed;
118 int duplex;
119
120 /* get mode from array */
121 if (bit >= RTE_DIM(link_modes))
122 return RTE_ETH_LINK_SPEED_AUTONEG;
123 speed = link_modes[bit];
124 if (speed == 0)
125 return RTE_ETH_LINK_SPEED_AUTONEG;
126 RTE_BUILD_BUG_ON(RTE_ETH_LINK_SPEED_AUTONEG != 0);
127
128 /* duplex is LSB */
129 duplex = (speed & 1) ?
130 RTE_ETH_LINK_HALF_DUPLEX :
131 RTE_ETH_LINK_FULL_DUPLEX;
132 speed &= RTE_GENMASK32(31, 1);
133
134 return rte_eth_speed_bitflag(speed, duplex);
135 }
136
137 uint32_t
rte_eth_link_speed_glink(const uint32_t * bitmap,int8_t nwords)138 rte_eth_link_speed_glink(const uint32_t *bitmap, int8_t nwords)
139 {
140 uint8_t word, bit;
141 uint32_t ethdev_bitmap = 0;
142
143 if (nwords < 1)
144 return 0;
145
146 for (word = 0; word < nwords; word++) {
147 for (bit = 0; bit < 32; bit++) {
148 if ((bitmap[word] & RTE_BIT32(bit)) == 0)
149 continue;
150 ethdev_bitmap |= rte_eth_link_speed_ethtool(word * 32 + bit);
151 }
152 }
153
154 return ethdev_bitmap;
155 }
156
157 uint32_t
rte_eth_link_speed_gset(uint32_t legacy_bitmap)158 rte_eth_link_speed_gset(uint32_t legacy_bitmap)
159 {
160 return rte_eth_link_speed_glink(&legacy_bitmap, 1);
161 }
162