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-rw-r--r--drivers/net/ethernet/pensando/ionic/ionic_ethtool.c35
-rw-r--r--drivers/net/ethernet/pensando/ionic/ionic_lif.c145
-rw-r--r--drivers/net/ethernet/pensando/ionic/ionic_lif.h19
3 files changed, 185 insertions, 14 deletions
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
index 73af0ecc5495..adaefa5fe883 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
@@ -493,18 +493,14 @@ static void ionic_get_ringparam(struct net_device *netdev,
ring->rx_pending = lif->nrxq_descs;
}
-static void ionic_set_ringsize(struct ionic_lif *lif, void *arg)
-{
- struct ethtool_ringparam *ring = arg;
-
- lif->ntxq_descs = ring->tx_pending;
- lif->nrxq_descs = ring->rx_pending;
-}
-
static int ionic_set_ringparam(struct net_device *netdev,
struct ethtool_ringparam *ring)
{
struct ionic_lif *lif = netdev_priv(netdev);
+ struct ionic_queue_params qparam;
+ int err;
+
+ ionic_init_queue_params(lif, &qparam);
if (ring->rx_mini_pending || ring->rx_jumbo_pending) {
netdev_info(netdev, "Changing jumbo or mini descriptors not supported\n");
@@ -522,7 +518,28 @@ static int ionic_set_ringparam(struct net_device *netdev,
ring->rx_pending == lif->nrxq_descs)
return 0;
- return ionic_reset_queues(lif, ionic_set_ringsize, ring);
+ if (ring->tx_pending != lif->ntxq_descs)
+ netdev_info(netdev, "Changing Tx ring size from %d to %d\n",
+ lif->ntxq_descs, ring->tx_pending);
+
+ if (ring->rx_pending != lif->nrxq_descs)
+ netdev_info(netdev, "Changing Rx ring size from %d to %d\n",
+ lif->nrxq_descs, ring->rx_pending);
+
+ /* if we're not running, just set the values and return */
+ if (!netif_running(lif->netdev)) {
+ lif->ntxq_descs = ring->tx_pending;
+ lif->nrxq_descs = ring->rx_pending;
+ return 0;
+ }
+
+ qparam.ntxq_descs = ring->tx_pending;
+ qparam.nrxq_descs = ring->rx_pending;
+ err = ionic_reconfigure_queues(lif, &qparam);
+ if (err)
+ netdev_info(netdev, "Ring reconfiguration failed, changes canceled: %d\n", err);
+
+ return err;
}
static void ionic_get_channels(struct net_device *netdev,
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
index 176ffc1c16c6..345259171265 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
@@ -333,10 +333,14 @@ static void ionic_qcq_free(struct ionic_lif *lif, struct ionic_qcq *qcq)
ionic_intr_free(lif->ionic, qcq->intr.index);
}
- devm_kfree(dev, qcq->cq.info);
- qcq->cq.info = NULL;
- devm_kfree(dev, qcq->q.info);
- qcq->q.info = NULL;
+ if (qcq->cq.info) {
+ devm_kfree(dev, qcq->cq.info);
+ qcq->cq.info = NULL;
+ }
+ if (qcq->q.info) {
+ devm_kfree(dev, qcq->q.info);
+ qcq->q.info = NULL;
+ }
devm_kfree(dev, qcq);
}
@@ -2047,6 +2051,139 @@ static const struct net_device_ops ionic_netdev_ops = {
.ndo_get_vf_stats = ionic_get_vf_stats,
};
+static void ionic_swap_queues(struct ionic_qcq *a, struct ionic_qcq *b)
+{
+ /* only swapping the queues, not the napi, flags, or other stuff */
+ swap(a->q.num_descs, b->q.num_descs);
+ swap(a->q.base, b->q.base);
+ swap(a->q.base_pa, b->q.base_pa);
+ swap(a->q.info, b->q.info);
+ swap(a->q_base, b->q_base);
+ swap(a->q_base_pa, b->q_base_pa);
+ swap(a->q_size, b->q_size);
+
+ swap(a->q.sg_base, b->q.sg_base);
+ swap(a->q.sg_base_pa, b->q.sg_base_pa);
+ swap(a->sg_base, b->sg_base);
+ swap(a->sg_base_pa, b->sg_base_pa);
+ swap(a->sg_size, b->sg_size);
+
+ swap(a->cq.num_descs, b->cq.num_descs);
+ swap(a->cq.base, b->cq.base);
+ swap(a->cq.base_pa, b->cq.base_pa);
+ swap(a->cq.info, b->cq.info);
+ swap(a->cq_base, b->cq_base);
+ swap(a->cq_base_pa, b->cq_base_pa);
+ swap(a->cq_size, b->cq_size);
+}
+
+int ionic_reconfigure_queues(struct ionic_lif *lif,
+ struct ionic_queue_params *qparam)
+{
+ struct ionic_qcq **tx_qcqs = NULL;
+ struct ionic_qcq **rx_qcqs = NULL;
+ unsigned int sg_desc_sz;
+ unsigned int flags;
+ int err = -ENOMEM;
+ unsigned int i;
+
+ /* allocate temporary qcq arrays to hold new queue structs */
+ if (qparam->ntxq_descs != lif->ntxq_descs) {
+ tx_qcqs = devm_kcalloc(lif->ionic->dev, lif->nxqs,
+ sizeof(struct ionic_qcq *), GFP_KERNEL);
+ if (!tx_qcqs)
+ goto err_out;
+ }
+ if (qparam->nrxq_descs != lif->nrxq_descs) {
+ rx_qcqs = devm_kcalloc(lif->ionic->dev, lif->nxqs,
+ sizeof(struct ionic_qcq *), GFP_KERNEL);
+ if (!rx_qcqs)
+ goto err_out;
+ }
+
+ /* allocate new desc_info and rings with no interrupt flag */
+ if (lif->qtype_info[IONIC_QTYPE_TXQ].version >= 1 &&
+ lif->qtype_info[IONIC_QTYPE_TXQ].sg_desc_sz ==
+ sizeof(struct ionic_txq_sg_desc_v1))
+ sg_desc_sz = sizeof(struct ionic_txq_sg_desc_v1);
+ else
+ sg_desc_sz = sizeof(struct ionic_txq_sg_desc);
+
+ if (tx_qcqs) {
+ for (i = 0; i < lif->nxqs; i++) {
+ flags = lif->txqcqs[i]->flags & ~IONIC_QCQ_F_INTR;
+ err = ionic_qcq_alloc(lif, IONIC_QTYPE_TXQ, i, "tx", flags,
+ qparam->ntxq_descs,
+ sizeof(struct ionic_txq_desc),
+ sizeof(struct ionic_txq_comp),
+ sg_desc_sz,
+ lif->kern_pid, &tx_qcqs[i]);
+ if (err)
+ goto err_out;
+ }
+ }
+
+ if (rx_qcqs) {
+ for (i = 0; i < lif->nxqs; i++) {
+ flags = lif->rxqcqs[i]->flags & ~IONIC_QCQ_F_INTR;
+ err = ionic_qcq_alloc(lif, IONIC_QTYPE_RXQ, i, "rx", flags,
+ qparam->nrxq_descs,
+ sizeof(struct ionic_rxq_desc),
+ sizeof(struct ionic_rxq_comp),
+ sizeof(struct ionic_rxq_sg_desc),
+ lif->kern_pid, &rx_qcqs[i]);
+ if (err)
+ goto err_out;
+ }
+ }
+
+ /* stop and clean the queues */
+ ionic_stop_queues_reconfig(lif);
+
+ /* swap new desc_info and rings, keeping existing interrupt config */
+ if (tx_qcqs) {
+ lif->ntxq_descs = qparam->ntxq_descs;
+ for (i = 0; i < lif->nxqs; i++)
+ ionic_swap_queues(lif->txqcqs[i], tx_qcqs[i]);
+ }
+
+ if (rx_qcqs) {
+ lif->nrxq_descs = qparam->nrxq_descs;
+ for (i = 0; i < lif->nxqs; i++)
+ ionic_swap_queues(lif->rxqcqs[i], rx_qcqs[i]);
+ }
+
+ /* re-init the queues */
+ err = ionic_start_queues_reconfig(lif);
+
+err_out:
+ /* free old allocs without cleaning intr */
+ for (i = 0; i < lif->nxqs; i++) {
+ if (tx_qcqs && tx_qcqs[i]) {
+ tx_qcqs[i]->flags &= ~IONIC_QCQ_F_INTR;
+ ionic_qcq_free(lif, tx_qcqs[i]);
+ tx_qcqs[i] = NULL;
+ }
+ if (rx_qcqs && rx_qcqs[i]) {
+ rx_qcqs[i]->flags &= ~IONIC_QCQ_F_INTR;
+ ionic_qcq_free(lif, rx_qcqs[i]);
+ rx_qcqs[i] = NULL;
+ }
+ }
+
+ /* free q array */
+ if (rx_qcqs) {
+ devm_kfree(lif->ionic->dev, rx_qcqs);
+ rx_qcqs = NULL;
+ }
+ if (tx_qcqs) {
+ devm_kfree(lif->ionic->dev, tx_qcqs);
+ tx_qcqs = NULL;
+ }
+
+ return err;
+}
+
int ionic_reset_queues(struct ionic_lif *lif, ionic_reset_cb cb, void *arg)
{
bool running;
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.h b/drivers/net/ethernet/pensando/ionic/ionic_lif.h
index b8f774b1db3a..1df3e1e4107b 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.h
@@ -207,6 +207,22 @@ struct ionic_lif {
struct work_struct tx_timeout_work;
};
+struct ionic_queue_params {
+ unsigned int nxqs;
+ unsigned int ntxq_descs;
+ unsigned int nrxq_descs;
+ unsigned int intr_split;
+};
+
+static inline void ionic_init_queue_params(struct ionic_lif *lif,
+ struct ionic_queue_params *qparam)
+{
+ qparam->nxqs = lif->nxqs;
+ qparam->ntxq_descs = lif->ntxq_descs;
+ qparam->nrxq_descs = lif->nrxq_descs;
+ qparam->intr_split = test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state);
+}
+
static inline u32 ionic_coal_usec_to_hw(struct ionic *ionic, u32 usecs)
{
u32 mult = le32_to_cpu(ionic->ident.dev.intr_coal_mult);
@@ -241,7 +257,8 @@ int ionic_lif_identify(struct ionic *ionic, u8 lif_type,
int ionic_lif_size(struct ionic *ionic);
int ionic_lif_rss_config(struct ionic_lif *lif, u16 types,
const u8 *key, const u32 *indir);
-
+int ionic_reconfigure_queues(struct ionic_lif *lif,
+ struct ionic_queue_params *qparam);
int ionic_reset_queues(struct ionic_lif *lif, ionic_reset_cb cb, void *arg);
static inline void debug_stats_txq_post(struct ionic_queue *q, bool dbell)
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 12:33:30 +0000