1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /* Copyright (c) 2021, Microsoft Corporation. */
4 #include <linux/inetdevice.h>
5 #include <linux/etherdevice.h>
6 #include <linux/ethtool.h>
8 #include <net/mana/mana.h>
11 char name[ETH_GSTRING_LEN];
13 } mana_eth_stats[] = {
14 {"stop_queue", offsetof(struct mana_ethtool_stats, stop_queue)},
15 {"wake_queue", offsetof(struct mana_ethtool_stats, wake_queue)},
16 {"tx_cq_err", offsetof(struct mana_ethtool_stats, tx_cqe_err)},
17 {"tx_cqe_unknown_type", offsetof(struct mana_ethtool_stats,
18 tx_cqe_unknown_type)},
19 {"rx_coalesced_err", offsetof(struct mana_ethtool_stats,
21 {"rx_cqe_unknown_type", offsetof(struct mana_ethtool_stats,
22 rx_cqe_unknown_type)},
25 static int mana_get_sset_count(struct net_device *ndev, int stringset)
27 struct mana_port_context *apc = netdev_priv(ndev);
28 unsigned int num_queues = apc->num_queues;
30 if (stringset != ETH_SS_STATS)
33 return ARRAY_SIZE(mana_eth_stats) + num_queues *
34 (MANA_STATS_RX_COUNT + MANA_STATS_TX_COUNT);
37 static void mana_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
39 struct mana_port_context *apc = netdev_priv(ndev);
40 unsigned int num_queues = apc->num_queues;
44 if (stringset != ETH_SS_STATS)
47 for (i = 0; i < ARRAY_SIZE(mana_eth_stats); i++) {
48 memcpy(p, mana_eth_stats[i].name, ETH_GSTRING_LEN);
52 for (i = 0; i < num_queues; i++) {
53 sprintf(p, "rx_%d_packets", i);
55 sprintf(p, "rx_%d_bytes", i);
57 sprintf(p, "rx_%d_xdp_drop", i);
59 sprintf(p, "rx_%d_xdp_tx", i);
61 sprintf(p, "rx_%d_xdp_redirect", i);
65 for (i = 0; i < num_queues; i++) {
66 sprintf(p, "tx_%d_packets", i);
68 sprintf(p, "tx_%d_bytes", i);
70 sprintf(p, "tx_%d_xdp_xmit", i);
72 sprintf(p, "tx_%d_tso_packets", i);
74 sprintf(p, "tx_%d_tso_bytes", i);
76 sprintf(p, "tx_%d_tso_inner_packets", i);
78 sprintf(p, "tx_%d_tso_inner_bytes", i);
80 sprintf(p, "tx_%d_long_pkt_fmt", i);
82 sprintf(p, "tx_%d_short_pkt_fmt", i);
84 sprintf(p, "tx_%d_csum_partial", i);
86 sprintf(p, "tx_%d_mana_map_err", i);
91 static void mana_get_ethtool_stats(struct net_device *ndev,
92 struct ethtool_stats *e_stats, u64 *data)
94 struct mana_port_context *apc = netdev_priv(ndev);
95 unsigned int num_queues = apc->num_queues;
96 void *eth_stats = &apc->eth_stats;
97 struct mana_stats_rx *rx_stats;
98 struct mana_stats_tx *tx_stats;
107 u64 tso_inner_packets;
115 if (!apc->port_is_up)
118 for (q = 0; q < ARRAY_SIZE(mana_eth_stats); q++)
119 data[i++] = *(u64 *)(eth_stats + mana_eth_stats[q].offset);
121 for (q = 0; q < num_queues; q++) {
122 rx_stats = &apc->rxqs[q]->stats;
125 start = u64_stats_fetch_begin(&rx_stats->syncp);
126 packets = rx_stats->packets;
127 bytes = rx_stats->bytes;
128 xdp_drop = rx_stats->xdp_drop;
129 xdp_tx = rx_stats->xdp_tx;
130 xdp_redirect = rx_stats->xdp_redirect;
131 } while (u64_stats_fetch_retry(&rx_stats->syncp, start));
135 data[i++] = xdp_drop;
137 data[i++] = xdp_redirect;
140 for (q = 0; q < num_queues; q++) {
141 tx_stats = &apc->tx_qp[q].txq.stats;
144 start = u64_stats_fetch_begin(&tx_stats->syncp);
145 packets = tx_stats->packets;
146 bytes = tx_stats->bytes;
147 xdp_xmit = tx_stats->xdp_xmit;
148 tso_packets = tx_stats->tso_packets;
149 tso_bytes = tx_stats->tso_bytes;
150 tso_inner_packets = tx_stats->tso_inner_packets;
151 tso_inner_bytes = tx_stats->tso_inner_bytes;
152 long_pkt_fmt = tx_stats->long_pkt_fmt;
153 short_pkt_fmt = tx_stats->short_pkt_fmt;
154 csum_partial = tx_stats->csum_partial;
155 mana_map_err = tx_stats->mana_map_err;
156 } while (u64_stats_fetch_retry(&tx_stats->syncp, start));
160 data[i++] = xdp_xmit;
161 data[i++] = tso_packets;
162 data[i++] = tso_bytes;
163 data[i++] = tso_inner_packets;
164 data[i++] = tso_inner_bytes;
165 data[i++] = long_pkt_fmt;
166 data[i++] = short_pkt_fmt;
167 data[i++] = csum_partial;
168 data[i++] = mana_map_err;
172 static int mana_get_rxnfc(struct net_device *ndev, struct ethtool_rxnfc *cmd,
175 struct mana_port_context *apc = netdev_priv(ndev);
178 case ETHTOOL_GRXRINGS:
179 cmd->data = apc->num_queues;
186 static u32 mana_get_rxfh_key_size(struct net_device *ndev)
188 return MANA_HASH_KEY_SIZE;
191 static u32 mana_rss_indir_size(struct net_device *ndev)
193 return MANA_INDIRECT_TABLE_SIZE;
196 static int mana_get_rxfh(struct net_device *ndev, u32 *indir, u8 *key,
199 struct mana_port_context *apc = netdev_priv(ndev);
203 *hfunc = ETH_RSS_HASH_TOP; /* Toeplitz */
206 for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++)
207 indir[i] = apc->indir_table[i];
211 memcpy(key, apc->hashkey, MANA_HASH_KEY_SIZE);
216 static int mana_set_rxfh(struct net_device *ndev, const u32 *indir,
217 const u8 *key, const u8 hfunc)
219 struct mana_port_context *apc = netdev_priv(ndev);
220 bool update_hash = false, update_table = false;
221 u32 save_table[MANA_INDIRECT_TABLE_SIZE];
222 u8 save_key[MANA_HASH_KEY_SIZE];
225 if (!apc->port_is_up)
228 if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
232 for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++)
233 if (indir[i] >= apc->num_queues)
237 for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++) {
238 save_table[i] = apc->indir_table[i];
239 apc->indir_table[i] = indir[i];
245 memcpy(save_key, apc->hashkey, MANA_HASH_KEY_SIZE);
246 memcpy(apc->hashkey, key, MANA_HASH_KEY_SIZE);
249 err = mana_config_rss(apc, TRI_STATE_TRUE, update_hash, update_table);
251 if (err) { /* recover to original values */
253 for (i = 0; i < MANA_INDIRECT_TABLE_SIZE; i++)
254 apc->indir_table[i] = save_table[i];
258 memcpy(apc->hashkey, save_key, MANA_HASH_KEY_SIZE);
260 mana_config_rss(apc, TRI_STATE_TRUE, update_hash, update_table);
266 static void mana_get_channels(struct net_device *ndev,
267 struct ethtool_channels *channel)
269 struct mana_port_context *apc = netdev_priv(ndev);
271 channel->max_combined = apc->max_queues;
272 channel->combined_count = apc->num_queues;
275 static int mana_set_channels(struct net_device *ndev,
276 struct ethtool_channels *channels)
278 struct mana_port_context *apc = netdev_priv(ndev);
279 unsigned int new_count = channels->combined_count;
280 unsigned int old_count = apc->num_queues;
283 err = mana_detach(ndev, false);
285 netdev_err(ndev, "mana_detach failed: %d\n", err);
289 apc->num_queues = new_count;
290 err = mana_attach(ndev);
294 netdev_err(ndev, "mana_attach failed: %d\n", err);
296 /* Try to roll it back to the old configuration. */
297 apc->num_queues = old_count;
298 err2 = mana_attach(ndev);
300 netdev_err(ndev, "mana re-attach failed: %d\n", err2);
305 const struct ethtool_ops mana_ethtool_ops = {
306 .get_ethtool_stats = mana_get_ethtool_stats,
307 .get_sset_count = mana_get_sset_count,
308 .get_strings = mana_get_strings,
309 .get_rxnfc = mana_get_rxnfc,
310 .get_rxfh_key_size = mana_get_rxfh_key_size,
311 .get_rxfh_indir_size = mana_rss_indir_size,
312 .get_rxfh = mana_get_rxfh,
313 .set_rxfh = mana_set_rxfh,
314 .get_channels = mana_get_channels,
315 .set_channels = mana_set_channels,