Commit ad361adf authored by Michael Chan's avatar Michael Chan Committed by David S. Miller

bnxt_en: Pass correct extended TX port statistics size to firmware.

If driver determines that extended TX port statistics are not supported
or allocation of the data structure fails, make sure to pass 0 TX stats
size to firmware to disable it.  The firmware returned TX stats size should
also be set to 0 for consistency.  This will prevent
bnxt_get_ethtool_stats() from accessing the NULL TX stats pointer in
case there is mismatch between firmware and driver.

Fixes: 36e53349 ("bnxt_en: Add additional extended port statistics.")
Signed-off-by: default avatarMichael Chan <michael.chan@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 1f83391b
......@@ -6753,6 +6753,7 @@ static int bnxt_hwrm_port_qstats_ext(struct bnxt *bp)
struct hwrm_queue_pri2cos_qcfg_input req2 = {0};
struct hwrm_port_qstats_ext_input req = {0};
struct bnxt_pf_info *pf = &bp->pf;
u32 tx_stat_size;
int rc;
if (!(bp->flags & BNXT_FLAG_PORT_STATS_EXT))
......@@ -6762,13 +6763,16 @@ static int bnxt_hwrm_port_qstats_ext(struct bnxt *bp)
req.port_id = cpu_to_le16(pf->port_id);
req.rx_stat_size = cpu_to_le16(sizeof(struct rx_port_stats_ext));
req.rx_stat_host_addr = cpu_to_le64(bp->hw_rx_port_stats_ext_map);
req.tx_stat_size = cpu_to_le16(sizeof(struct tx_port_stats_ext));
tx_stat_size = bp->hw_tx_port_stats_ext ?
sizeof(*bp->hw_tx_port_stats_ext) : 0;
req.tx_stat_size = cpu_to_le16(tx_stat_size);
req.tx_stat_host_addr = cpu_to_le64(bp->hw_tx_port_stats_ext_map);
mutex_lock(&bp->hwrm_cmd_lock);
rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
if (!rc) {
bp->fw_rx_stats_ext_size = le16_to_cpu(resp->rx_stat_size) / 8;
bp->fw_tx_stats_ext_size = le16_to_cpu(resp->tx_stat_size) / 8;
bp->fw_tx_stats_ext_size = tx_stat_size ?
le16_to_cpu(resp->tx_stat_size) / 8 : 0;
} else {
bp->fw_rx_stats_ext_size = 0;
bp->fw_tx_stats_ext_size = 0;
......
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