[PATCH] net/bnxt: fix ring calculation for representors
Ajit Khaparde
ajit.khaparde at broadcom.com
Wed Feb 9 16:37:44 CET 2022
On Tue, Feb 8, 2022 at 9:58 PM Ajit Khaparde <ajit.khaparde at broadcom.com> wrote:
>
> Currently the Tx and Rx ring count for representors is fixed.
> It does not consider the number of rings created for the parent
> function. And that can cause issues not only during initialization
> but while running traffic.
> Instead check the number of rings created for the parent function
> while configuring the ring resources for representors.
>
> Fixes: 322bd6e70272 ("net/bnxt: add port representor infrastructure")
> Cc: stable at dpdk.org
>
> Signed-off-by: Ajit Khaparde <ajit.khaparde at broadcom.com>
> Reviewed-by: Somnath Kotur <somnath.kotur at broadcom.com>
> Reviewed-by: Kalesh AP <kalesh-anakkur.purayil at broadcom.com>
Patch applied to dpdk-next-net-brcm.
> ---
> drivers/net/bnxt/bnxt.h | 2 +-
> drivers/net/bnxt/bnxt_reps.c | 19 ++++++++++---------
> 2 files changed, 11 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/net/bnxt/bnxt.h b/drivers/net/bnxt/bnxt.h
> index 433f1c80be..0cbb58b2cf 100644
> --- a/drivers/net/bnxt/bnxt.h
> +++ b/drivers/net/bnxt/bnxt.h
> @@ -831,7 +831,7 @@ struct bnxt {
> uint16_t max_tx_rings;
> uint16_t max_rx_rings;
> #define MAX_STINGRAY_RINGS 236U
> -#define BNXT_MAX_VF_REP_RINGS 8
> +#define BNXT_MAX_VF_REP_RINGS 8U
>
> uint16_t max_nq_rings;
> uint16_t max_l2_ctx;
> diff --git a/drivers/net/bnxt/bnxt_reps.c b/drivers/net/bnxt/bnxt_reps.c
> index 5e140f0cdb..9ae8848382 100644
> --- a/drivers/net/bnxt/bnxt_reps.c
> +++ b/drivers/net/bnxt/bnxt_reps.c
> @@ -548,7 +548,8 @@ int bnxt_rep_dev_info_get_op(struct rte_eth_dev *eth_dev,
> dev_info->max_mac_addrs = parent_bp->max_l2_ctx;
> dev_info->max_hash_mac_addrs = 0;
>
> - max_rx_rings = BNXT_MAX_VF_REP_RINGS;
> + max_rx_rings = RTE_MIN(parent_bp->rx_nr_rings, BNXT_MAX_VF_REP_RINGS);
> +
> /* For the sake of symmetry, max_rx_queues = max_tx_queues */
> dev_info->max_rx_queues = max_rx_rings;
> dev_info->max_tx_queues = max_rx_rings;
> @@ -629,10 +630,10 @@ int bnxt_rep_rx_queue_setup_op(struct rte_eth_dev *eth_dev,
> struct rte_mbuf **buf_ring;
> int rc = 0;
>
> - if (queue_idx >= BNXT_MAX_VF_REP_RINGS) {
> + if (queue_idx >= rep_bp->rx_nr_rings) {
> PMD_DRV_LOG(ERR,
> "Cannot create Rx ring %d. %d rings available\n",
> - queue_idx, BNXT_MAX_VF_REP_RINGS);
> + queue_idx, rep_bp->rx_nr_rings);
> return -EINVAL;
> }
>
> @@ -729,10 +730,10 @@ int bnxt_rep_tx_queue_setup_op(struct rte_eth_dev *eth_dev,
> struct bnxt_tx_queue *parent_txq, *txq;
> struct bnxt_vf_rep_tx_queue *vfr_txq;
>
> - if (queue_idx >= BNXT_MAX_VF_REP_RINGS) {
> + if (queue_idx >= rep_bp->rx_nr_rings) {
> PMD_DRV_LOG(ERR,
> "Cannot create Tx rings %d. %d rings available\n",
> - queue_idx, BNXT_MAX_VF_REP_RINGS);
> + queue_idx, rep_bp->rx_nr_rings);
> return -EINVAL;
> }
>
> @@ -805,10 +806,10 @@ int bnxt_rep_stats_get_op(struct rte_eth_dev *eth_dev,
> struct rte_eth_stats *stats)
> {
> struct bnxt_representor *rep_bp = eth_dev->data->dev_private;
> - int i;
> + unsigned int i;
>
> memset(stats, 0, sizeof(*stats));
> - for (i = 0; i < BNXT_MAX_VF_REP_RINGS; i++) {
> + for (i = 0; i < rep_bp->rx_nr_rings; i++) {
> stats->obytes += rep_bp->tx_bytes[i];
> stats->opackets += rep_bp->tx_pkts[i];
> stats->ibytes += rep_bp->rx_bytes[i];
> @@ -828,9 +829,9 @@ int bnxt_rep_stats_get_op(struct rte_eth_dev *eth_dev,
> int bnxt_rep_stats_reset_op(struct rte_eth_dev *eth_dev)
> {
> struct bnxt_representor *rep_bp = eth_dev->data->dev_private;
> - int i;
> + unsigned int i;
>
> - for (i = 0; i < BNXT_MAX_VF_REP_RINGS; i++) {
> + for (i = 0; i < rep_bp->rx_nr_rings; i++) {
> rep_bp->tx_pkts[i] = 0;
> rep_bp->tx_bytes[i] = 0;
> rep_bp->rx_pkts[i] = 0;
> --
> 2.32.0 (Apple Git-132)
>
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