On Fri, Oct 25, 2024 at 4:52 AM Morten Brørup <[email protected]> wrote: > > When configuring DPDK for one queue per port > (#define RTE_MAX_QUEUES_PER_PORT 1), compilation of some network drivers > fails with e.g.: > > ../drivers/net/bnxt/bnxt_rxq.c: In function 'bnxt_rx_queue_stop': > ../drivers/net/bnxt/bnxt_rxq.c:587:34: error: array subscript 1 is above > array bounds of 'uint8_t[1]' {aka 'unsigned char[1]'} [-Werror=array-bounds=] > 587 | dev->data->rx_queue_state[q_id] = RTE_ETH_QUEUE_STATE_STOPPED; > | ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~ > In file included from ../drivers/net/bnxt/bnxt.h:16, > from ../drivers/net/bnxt/bnxt_rxq.c:10: > ../lib/ethdev/ethdev_driver.h:168:17: note: while referencing 'rx_queue_state' > 168 | uint8_t rx_queue_state[RTE_MAX_QUEUES_PER_PORT]; > | ^~~~~~~~~~~~~~ > > To fix this, a hint is added to the network drivers where a compiler in > the CI has been seen to emit the above error when DPDK is configured for > one queue per port, but we know that the error cannot occur. > > Signed-off-by: Morten Brørup <[email protected]> Acked-by: Ajit Khaparde <[email protected]>
> ---
> drivers/net/bnxt/bnxt_ethdev.c | 2 ++
> drivers/net/bnxt/bnxt_rxq.c | 1 +
> drivers/net/e1000/igb_rxtx.c | 2 ++
> drivers/net/failsafe/failsafe_ops.c | 10 ++++++++--
> drivers/net/hns3/hns3_rxtx.c | 2 ++
> drivers/net/mana/tx.c | 1 +
> 6 files changed, 16 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
> index 1f7c0d77d5..136e308437 100644
> --- a/drivers/net/bnxt/bnxt_ethdev.c
> +++ b/drivers/net/bnxt/bnxt_ethdev.c
> @@ -910,6 +910,7 @@ static int bnxt_start_nic(struct bnxt *bp)
> struct bnxt_rx_queue *rxq = bp->rx_queues[j];
>
> if (!rxq->rx_deferred_start) {
> + __rte_assume(j < RTE_MAX_QUEUES_PER_PORT);
> bp->eth_dev->data->rx_queue_state[j] =
> RTE_ETH_QUEUE_STATE_STARTED;
> rxq->rx_started = true;
> @@ -930,6 +931,7 @@ static int bnxt_start_nic(struct bnxt *bp)
> struct bnxt_tx_queue *txq = bp->tx_queues[j];
>
> if (!txq->tx_deferred_start) {
> + __rte_assume(j < RTE_MAX_QUEUES_PER_PORT);
> bp->eth_dev->data->tx_queue_state[j] =
> RTE_ETH_QUEUE_STATE_STARTED;
> txq->tx_started = true;
> diff --git a/drivers/net/bnxt/bnxt_rxq.c b/drivers/net/bnxt/bnxt_rxq.c
> index 1c25c57ca6..1651c26545 100644
> --- a/drivers/net/bnxt/bnxt_rxq.c
> +++ b/drivers/net/bnxt/bnxt_rxq.c
> @@ -584,6 +584,7 @@ int bnxt_rx_queue_stop(struct rte_eth_dev *dev, uint16_t
> rx_queue_id)
> return -EINVAL;
> }
>
> + __rte_assume(q_id < RTE_MAX_QUEUES_PER_PORT);
> dev->data->rx_queue_state[q_id] = RTE_ETH_QUEUE_STATE_STOPPED;
> rxq->rx_started = false;
> PMD_DRV_LOG_LINE(DEBUG, "Rx queue stopped");
> diff --git a/drivers/net/e1000/igb_rxtx.c b/drivers/net/e1000/igb_rxtx.c
> index d61eaad2de..4276bb6d31 100644
> --- a/drivers/net/e1000/igb_rxtx.c
> +++ b/drivers/net/e1000/igb_rxtx.c
> @@ -1868,6 +1868,7 @@ igb_dev_clear_queues(struct rte_eth_dev *dev)
> struct igb_rx_queue *rxq;
>
> for (i = 0; i < dev->data->nb_tx_queues; i++) {
> + __rte_assume(i < RTE_MAX_QUEUES_PER_PORT);
> txq = dev->data->tx_queues[i];
> if (txq != NULL) {
> igb_tx_queue_release_mbufs(txq);
> @@ -1877,6 +1878,7 @@ igb_dev_clear_queues(struct rte_eth_dev *dev)
> }
>
> for (i = 0; i < dev->data->nb_rx_queues; i++) {
> + __rte_assume(i < RTE_MAX_QUEUES_PER_PORT);
> rxq = dev->data->rx_queues[i];
> if (rxq != NULL) {
> igb_rx_queue_release_mbufs(rxq);
> diff --git a/drivers/net/failsafe/failsafe_ops.c
> b/drivers/net/failsafe/failsafe_ops.c
> index 9c013e0419..5321c3385c 100644
> --- a/drivers/net/failsafe/failsafe_ops.c
> +++ b/drivers/net/failsafe/failsafe_ops.c
> @@ -111,12 +111,14 @@ fs_set_queues_state_start(struct rte_eth_dev *dev)
> uint16_t i;
>
> for (i = 0; i < dev->data->nb_rx_queues; i++) {
> + __rte_assume(i < RTE_MAX_QUEUES_PER_PORT);
> rxq = dev->data->rx_queues[i];
> if (rxq != NULL && !rxq->info.conf.rx_deferred_start)
> dev->data->rx_queue_state[i] =
> RTE_ETH_QUEUE_STATE_STARTED;
> }
> for (i = 0; i < dev->data->nb_tx_queues; i++) {
> + __rte_assume(i < RTE_MAX_QUEUES_PER_PORT);
> txq = dev->data->tx_queues[i];
> if (txq != NULL && !txq->info.conf.tx_deferred_start)
> dev->data->tx_queue_state[i] =
> @@ -176,14 +178,18 @@ fs_set_queues_state_stop(struct rte_eth_dev *dev)
> {
> uint16_t i;
>
> - for (i = 0; i < dev->data->nb_rx_queues; i++)
> + for (i = 0; i < dev->data->nb_rx_queues; i++) {
> + __rte_assume(i < RTE_MAX_QUEUES_PER_PORT);
> if (dev->data->rx_queues[i] != NULL)
> dev->data->rx_queue_state[i] =
> RTE_ETH_QUEUE_STATE_STOPPED;
> - for (i = 0; i < dev->data->nb_tx_queues; i++)
> + }
> + for (i = 0; i < dev->data->nb_tx_queues; i++) {
> + __rte_assume(i < RTE_MAX_QUEUES_PER_PORT);
> if (dev->data->tx_queues[i] != NULL)
> dev->data->tx_queue_state[i] =
> RTE_ETH_QUEUE_STATE_STOPPED;
> + }
> }
>
> static int
> diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c
> index 5941b966e0..03bbbc435f 100644
> --- a/drivers/net/hns3/hns3_rxtx.c
> +++ b/drivers/net/hns3/hns3_rxtx.c
> @@ -1309,6 +1309,7 @@ hns3_start_tqps(struct hns3_hw *hw)
> hns3_enable_all_queues(hw, true);
>
> for (i = 0; i < hw->data->nb_tx_queues; i++) {
> + __rte_assume(i < RTE_MAX_QUEUES_PER_PORT);
> txq = hw->data->tx_queues[i];
> if (txq->enabled)
> hw->data->tx_queue_state[i] =
> @@ -1316,6 +1317,7 @@ hns3_start_tqps(struct hns3_hw *hw)
> }
>
> for (i = 0; i < hw->data->nb_rx_queues; i++) {
> + __rte_assume(i < RTE_MAX_QUEUES_PER_PORT);
> rxq = hw->data->rx_queues[i];
> if (rxq->enabled)
> hw->data->rx_queue_state[i] =
> diff --git a/drivers/net/mana/tx.c b/drivers/net/mana/tx.c
> index 272a28bcba..40931ac027 100644
> --- a/drivers/net/mana/tx.c
> +++ b/drivers/net/mana/tx.c
> @@ -154,6 +154,7 @@ mana_start_tx_queues(struct rte_eth_dev *dev)
> txq->gdma_cq.count, txq->gdma_cq.size,
> txq->gdma_cq.head);
>
> + __rte_assume(i < RTE_MAX_QUEUES_PER_PORT);
> dev->data->tx_queue_state[i] = RTE_ETH_QUEUE_STATE_STARTED;
> }
>
> --
> 2.43.0
>
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