From 4cfbb0da7c3d8abd8172727dcf8139c059c8dfd0 Mon Sep 17 00:00:00 2001 From: Rahul Gupta Date: Wed, 2 Oct 2019 16:25:52 -0700 Subject: [PATCH] net/bnxt: handle ring cleanup in case of error Initialize all rings to INVALID_HW_RING_ID. This can be used to determine the rings to free if allocation fails. Signed-off-by: Rahul Gupta Signed-off-by: Ajit Khaparde Reviewed-by: Venkat Duvvuru Reviewed-by: Kalesh AP --- drivers/net/bnxt/bnxt_ring.c | 37 ++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/drivers/net/bnxt/bnxt_ring.c b/drivers/net/bnxt/bnxt_ring.c index eeb4e91d3b..e650906dbf 100644 --- a/drivers/net/bnxt/bnxt_ring.c +++ b/drivers/net/bnxt/bnxt_ring.c @@ -583,6 +583,42 @@ err_out: return rc; } +/* Initialise all rings to -1, its used to free rings later if allocation + * of few rings fails. + */ +static void bnxt_init_all_rings(struct bnxt *bp) +{ + unsigned int i = 0; + struct bnxt_rx_queue *rxq; + struct bnxt_ring *cp_ring; + struct bnxt_ring *ring; + struct bnxt_rx_ring_info *rxr; + struct bnxt_tx_queue *txq; + + for (i = 0; i < bp->rx_cp_nr_rings; i++) { + rxq = bp->rx_queues[i]; + /* Rx-compl */ + cp_ring = rxq->cp_ring->cp_ring_struct; + cp_ring->fw_ring_id = INVALID_HW_RING_ID; + /* Rx-Reg */ + rxr = rxq->rx_ring; + ring = rxr->rx_ring_struct; + ring->fw_ring_id = INVALID_HW_RING_ID; + /* Rx-AGG */ + ring = rxr->ag_ring_struct; + ring->fw_ring_id = INVALID_HW_RING_ID; + } + for (i = 0; i < bp->tx_cp_nr_rings; i++) { + txq = bp->tx_queues[i]; + /* Tx cmpl */ + cp_ring = txq->cp_ring->cp_ring_struct; + cp_ring->fw_ring_id = INVALID_HW_RING_ID; + /*Tx Ring */ + ring = txq->tx_ring->tx_ring_struct; + ring->fw_ring_id = INVALID_HW_RING_ID; + } +} + /* ring_grp usage: * [0] = default completion ring * [1 -> +rx_cp_nr_rings] = rx_cp, rx rings @@ -596,6 +632,7 @@ int bnxt_alloc_hwrm_rings(struct bnxt *bp) int rc = 0; bnxt_init_dflt_coal(&coal); + bnxt_init_all_rings(bp); for (i = 0; i < bp->rx_cp_nr_rings; i++) { struct bnxt_rx_queue *rxq = bp->rx_queues[i]; -- 2.20.1