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authorStephen Hemminger <sthemmin@microsoft.com>2019-06-13 08:03:43 -0700
committerFerruh Yigit <ferruh.yigit@intel.com>2019-06-28 20:32:18 +0200
commit92d23a57cafe8b57d6a430d5f3e911dd551b9de2 (patch)
tree3fbdae50e98eed31a04a5f6f437c40261af368b5 /drivers/net/netvsc/hn_ethdev.c
parent3a899f8afc3438bf092494209da69f74c1ddc54b (diff)
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net/netvsc: support configuring RSS parameters
Add RSS hash key and reta update and query functions. Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Diffstat (limited to 'drivers/net/netvsc/hn_ethdev.c')
-rw-r--r--drivers/net/netvsc/hn_ethdev.c183
1 files changed, 176 insertions, 7 deletions
diff --git a/drivers/net/netvsc/hn_ethdev.c b/drivers/net/netvsc/hn_ethdev.c
index 1fa14ff..e0b7016 100644
--- a/drivers/net/netvsc/hn_ethdev.c
+++ b/drivers/net/netvsc/hn_ethdev.c
@@ -69,6 +69,18 @@ static const struct hn_xstats_name_off hn_stat_strings[] = {
{ "size_1519_max_packets", offsetof(struct hn_stats, size_bins[7]) },
};
+/* The default RSS key.
+ * This value is the same as MLX5 so that flows will be
+ * received on same path for both VF ans synthetic NIC.
+ */
+static const uint8_t rss_default_key[NDIS_HASH_KEYSIZE_TOEPLITZ] = {
+ 0x2c, 0xc6, 0x81, 0xd1, 0x5b, 0xdb, 0xf4, 0xf7,
+ 0xfc, 0xa2, 0x83, 0x19, 0xdb, 0x1a, 0x3e, 0x94,
+ 0x6b, 0x9e, 0x38, 0xd9, 0x2c, 0x9c, 0x03, 0xd1,
+ 0xad, 0x99, 0x44, 0xa7, 0xd9, 0x56, 0x3d, 0x59,
+ 0x06, 0x3c, 0x25, 0xf3, 0xfc, 0x1f, 0xdc, 0x2a,
+};
+
static struct rte_eth_dev *
eth_dev_vmbus_allocate(struct rte_vmbus_device *dev, size_t private_data_size)
{
@@ -247,6 +259,155 @@ static void hn_dev_info_get(struct rte_eth_dev *dev,
hn_vf_info_get(hv, dev_info);
}
+static int hn_rss_reta_update(struct rte_eth_dev *dev,
+ struct rte_eth_rss_reta_entry64 *reta_conf,
+ uint16_t reta_size)
+{
+ struct hn_data *hv = dev->data->dev_private;
+ unsigned int i;
+ int err;
+
+ PMD_INIT_FUNC_TRACE();
+
+ if (reta_size != NDIS_HASH_INDCNT) {
+ PMD_DRV_LOG(ERR, "Hash lookup table size does not match NDIS");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < NDIS_HASH_INDCNT; i++) {
+ uint16_t idx = i / RTE_RETA_GROUP_SIZE;
+ uint16_t shift = i % RTE_RETA_GROUP_SIZE;
+ uint64_t mask = (uint64_t)1 << shift;
+
+ if (reta_conf[idx].mask & mask)
+ hv->rss_ind[i] = reta_conf[idx].reta[shift];
+ }
+
+ err = hn_rndis_conf_rss(hv, 0);
+ if (err) {
+ PMD_DRV_LOG(NOTICE,
+ "reta reconfig failed");
+ return err;
+ }
+
+ return hn_vf_reta_hash_update(dev, reta_conf, reta_size);
+}
+
+static int hn_rss_reta_query(struct rte_eth_dev *dev,
+ struct rte_eth_rss_reta_entry64 *reta_conf,
+ uint16_t reta_size)
+{
+ struct hn_data *hv = dev->data->dev_private;
+ unsigned int i;
+
+ PMD_INIT_FUNC_TRACE();
+
+ if (reta_size != NDIS_HASH_INDCNT) {
+ PMD_DRV_LOG(ERR, "Hash lookup table size does not match NDIS");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < NDIS_HASH_INDCNT; i++) {
+ uint16_t idx = i / RTE_RETA_GROUP_SIZE;
+ uint16_t shift = i % RTE_RETA_GROUP_SIZE;
+ uint64_t mask = (uint64_t)1 << shift;
+
+ if (reta_conf[idx].mask & mask)
+ reta_conf[idx].reta[shift] = hv->rss_ind[i];
+ }
+ return 0;
+}
+
+static void hn_rss_hash_init(struct hn_data *hv,
+ const struct rte_eth_rss_conf *rss_conf)
+{
+ /* Convert from DPDK RSS hash flags to NDIS hash flags */
+ hv->rss_hash = NDIS_HASH_FUNCTION_TOEPLITZ;
+
+ if (rss_conf->rss_hf & ETH_RSS_IPV4)
+ hv->rss_hash |= NDIS_HASH_IPV4;
+ if (rss_conf->rss_hf & ETH_RSS_NONFRAG_IPV4_TCP)
+ hv->rss_hash |= NDIS_HASH_TCP_IPV4;
+ if (rss_conf->rss_hf & ETH_RSS_IPV6)
+ hv->rss_hash |= NDIS_HASH_IPV6;
+ if (rss_conf->rss_hf & ETH_RSS_IPV6_EX)
+ hv->rss_hash |= NDIS_HASH_IPV6_EX;
+ if (rss_conf->rss_hf & ETH_RSS_NONFRAG_IPV6_TCP)
+ hv->rss_hash |= NDIS_HASH_TCP_IPV6;
+ if (rss_conf->rss_hf & ETH_RSS_IPV6_TCP_EX)
+ hv->rss_hash |= NDIS_HASH_TCP_IPV6_EX;
+
+ memcpy(hv->rss_key, rss_conf->rss_key ? : rss_default_key,
+ NDIS_HASH_KEYSIZE_TOEPLITZ);
+}
+
+static int hn_rss_hash_update(struct rte_eth_dev *dev,
+ struct rte_eth_rss_conf *rss_conf)
+{
+ struct hn_data *hv = dev->data->dev_private;
+ int err;
+
+ PMD_INIT_FUNC_TRACE();
+
+ err = hn_rndis_conf_rss(hv, NDIS_RSS_FLAG_DISABLE);
+ if (err) {
+ PMD_DRV_LOG(NOTICE,
+ "rss disable failed");
+ return err;
+ }
+
+ hn_rss_hash_init(hv, rss_conf);
+
+ err = hn_rndis_conf_rss(hv, 0);
+ if (err) {
+ PMD_DRV_LOG(NOTICE,
+ "rss reconfig failed (RSS disabled)");
+ return err;
+ }
+
+
+ return hn_vf_rss_hash_update(dev, rss_conf);
+}
+
+static int hn_rss_hash_conf_get(struct rte_eth_dev *dev,
+ struct rte_eth_rss_conf *rss_conf)
+{
+ struct hn_data *hv = dev->data->dev_private;
+
+ PMD_INIT_FUNC_TRACE();
+
+ if (hv->ndis_ver < NDIS_VERSION_6_20) {
+ PMD_DRV_LOG(DEBUG, "RSS not supported on this host");
+ return -EOPNOTSUPP;
+ }
+
+ rss_conf->rss_key_len = NDIS_HASH_KEYSIZE_TOEPLITZ;
+ if (rss_conf->rss_key)
+ memcpy(rss_conf->rss_key, hv->rss_key,
+ NDIS_HASH_KEYSIZE_TOEPLITZ);
+
+ rss_conf->rss_hf = 0;
+ if (hv->rss_hash & NDIS_HASH_IPV4)
+ rss_conf->rss_hf |= ETH_RSS_IPV4;
+
+ if (hv->rss_hash & NDIS_HASH_TCP_IPV4)
+ rss_conf->rss_hf |= ETH_RSS_NONFRAG_IPV4_TCP;
+
+ if (hv->rss_hash & NDIS_HASH_IPV6)
+ rss_conf->rss_hf |= ETH_RSS_IPV6;
+
+ if (hv->rss_hash & NDIS_HASH_IPV6_EX)
+ rss_conf->rss_hf |= ETH_RSS_IPV6_EX;
+
+ if (hv->rss_hash & NDIS_HASH_TCP_IPV6)
+ rss_conf->rss_hf |= ETH_RSS_NONFRAG_IPV6_TCP;
+
+ if (hv->rss_hash & NDIS_HASH_TCP_IPV6_EX)
+ rss_conf->rss_hf |= ETH_RSS_IPV6_TCP_EX;
+
+ return 0;
+}
+
static void
hn_dev_promiscuous_enable(struct rte_eth_dev *dev)
{
@@ -353,15 +514,13 @@ static int hn_subchan_configure(struct hn_data *hv,
static int hn_dev_configure(struct rte_eth_dev *dev)
{
- const struct rte_eth_conf *dev_conf = &dev->data->dev_conf;
+ struct rte_eth_conf *dev_conf = &dev->data->dev_conf;
+ struct rte_eth_rss_conf *rss_conf = &dev_conf->rx_adv_conf.rss_conf;
const struct rte_eth_rxmode *rxmode = &dev_conf->rxmode;
const struct rte_eth_txmode *txmode = &dev_conf->txmode;
-
- const struct rte_eth_rss_conf *rss_conf =
- &dev_conf->rx_adv_conf.rss_conf;
struct hn_data *hv = dev->data->dev_private;
uint64_t unsupported;
- int err, subchan;
+ int i, err, subchan;
PMD_INIT_FUNC_TRACE();
@@ -393,6 +552,12 @@ static int hn_dev_configure(struct rte_eth_dev *dev)
hv->num_queues = RTE_MAX(dev->data->nb_rx_queues,
dev->data->nb_tx_queues);
+
+ for (i = 0; i < NDIS_HASH_INDCNT; i++)
+ hv->rss_ind[i] = i % hv->num_queues;
+
+ hn_rss_hash_init(hv, rss_conf);
+
subchan = hv->num_queues - 1;
if (subchan > 0) {
err = hn_subchan_configure(hv, subchan);
@@ -402,10 +567,10 @@ static int hn_dev_configure(struct rte_eth_dev *dev)
return err;
}
- err = hn_rndis_conf_rss(hv, rss_conf);
+ err = hn_rndis_conf_rss(hv, 0);
if (err) {
PMD_DRV_LOG(NOTICE,
- "rss configuration failed");
+ "initial RSS config failed");
return err;
}
}
@@ -655,6 +820,10 @@ static const struct eth_dev_ops hn_eth_dev_ops = {
.allmulticast_enable = hn_dev_allmulticast_enable,
.allmulticast_disable = hn_dev_allmulticast_disable,
.set_mc_addr_list = hn_dev_mc_addr_list,
+ .reta_update = hn_rss_reta_update,
+ .reta_query = hn_rss_reta_query,
+ .rss_hash_update = hn_rss_hash_update,
+ .rss_hash_conf_get = hn_rss_hash_conf_get,
.tx_queue_setup = hn_dev_tx_queue_setup,
.tx_queue_release = hn_dev_tx_queue_release,
.tx_done_cleanup = hn_dev_tx_done_cleanup,