net/bnxt: fix double allocation of ring groups

After commit "d68249f88266", driver allocates ring groups in
bnxt_alloc_hwrm_rx_ring(). But during port start, driver invokes
bnxt_alloc_hwrm_rx_ring() followed by bnxt_alloc_all_hwrm_ring_grps().
This will cause the FW command failure in bnxt_alloc_all_hwrm_ring_grps()

To fix this, just don't create the ring group if it is already created.

Fixes: 9b63c6fd70e3 ("net/bnxt: support Rx/Tx queue start/stop")
Cc: stable@dpdk.org
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Reviewed-by: Lance Richardson <lance.richardson@broadcom.com>

diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
index 0e0e266..585cded 100644 (file)
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -1873,6 +1873,10 @@ int bnxt_hwrm_ring_grp_alloc(struct bnxt *bp, unsigned int idx)
        struct hwrm_ring_grp_alloc_input req = {.req_type = 0 };
        struct hwrm_ring_grp_alloc_output *resp = bp->hwrm_cmd_resp_addr;
 
+       /* Don't attempt to re-create the ring group if it is already created */
+       if (bp->grp_info[idx].fw_grp_id != INVALID_HW_RING_ID)
+               return 0;
+
        HWRM_PREP(&req, HWRM_RING_GRP_ALLOC, BNXT_USE_CHIMP_MB);
 
        req.cr = rte_cpu_to_le_16(bp->grp_info[idx].cp_fw_ring_id);