From: Huisong Li <lihuisong@huawei.com>
The query way of MAC statistics in HNS3 PF driver is as following:
1) get MAC statistics register number and calculate descriptor number.
2) use above descriptor number to send command to firmware to query all MAC
statistics and copy to hns3_mac_stats struct in driver.
The preceding way does not verify the validity of the number of obtained
register, which may cause memory out-of-bounds.
Fixes: 8839c5e202f3 ("net/hns3: support device stats")
Cc: stable@dpdk.org
Signed-off-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
---
drivers/net/hns3/hns3_ethdev.c | 4 ++
drivers/net/hns3/hns3_ethdev.h | 1 +
drivers/net/hns3/hns3_stats.c | 116 ++++++++++++++++-----------------
drivers/net/hns3/hns3_stats.h | 11 ++--
4 files changed, 65 insertions(+), 67 deletions(-)
@@ -2733,6 +2733,10 @@ hns3_get_capability(struct hns3_hw *hw)
if (ret)
return ret;
+ ret = hns3_query_mac_stats_reg_num(hw);
+ if (ret)
+ return ret;
+
if (hw->revision < PCI_REVISION_ID_HIP09_A) {
hns3_set_default_dev_specifications(hw);
hw->intr.mapping_mode = HNS3_INTR_MAPPING_VEC_RSV_ONE;
@@ -500,6 +500,7 @@ struct hns3_hw {
struct hns3_tqp_stats tqp_stats;
/* Include Mac stats | Rx stats | Tx stats */
struct hns3_mac_stats mac_stats;
+ uint32_t mac_stats_reg_num;
struct hns3_rx_missed_stats imissed_stats;
uint64_t oerror_stats;
uint32_t fw_version;
@@ -307,24 +307,21 @@ static const struct hns3_xstats_name_offset hns3_imissed_stats_strings[] = {
static void hns3_tqp_stats_clear(struct hns3_hw *hw);
-/*
- * Query all the MAC statistics data of Network ICL command ,opcode id: 0x0034.
- * This command is used before send 'query_mac_stat command', the descriptor
- * number of 'query_mac_stat command' must match with reg_num in this command.
- * @praram hw
- * Pointer to structure hns3_hw.
- * @return
- * 0 on success.
- */
static int
-hns3_update_mac_stats(struct hns3_hw *hw, const uint32_t desc_num)
+hns3_update_mac_stats(struct hns3_hw *hw)
{
+#define HNS3_MAC_STATS_REG_NUM_PER_DESC 4
+
uint64_t *data = (uint64_t *)(&hw->mac_stats);
struct hns3_cmd_desc *desc;
+ uint32_t stats_iterms;
uint64_t *desc_data;
- uint16_t i, k, n;
+ uint32_t desc_num;
+ uint16_t i;
int ret;
+ /* The first desc has a 64-bit header, so need to consider it. */
+ desc_num = hw->mac_stats_reg_num / HNS3_MAC_STATS_REG_NUM_PER_DESC + 1;
desc = rte_malloc("hns3_mac_desc",
desc_num * sizeof(struct hns3_cmd_desc), 0);
if (desc == NULL) {
@@ -340,65 +337,71 @@ hns3_update_mac_stats(struct hns3_hw *hw, const uint32_t desc_num)
return ret;
}
- for (i = 0; i < desc_num; i++) {
- /* For special opcode 0034, only the first desc has the head */
- if (i == 0) {
- desc_data = (uint64_t *)(&desc[i].data[0]);
- n = HNS3_RD_FIRST_STATS_NUM;
- } else {
- desc_data = (uint64_t *)(&desc[i]);
- n = HNS3_RD_OTHER_STATS_NUM;
- }
-
- for (k = 0; k < n; k++) {
- *data += rte_le_to_cpu_64(*desc_data);
- data++;
- desc_data++;
- }
+ stats_iterms = RTE_MIN(sizeof(hw->mac_stats) / sizeof(uint64_t),
+ hw->mac_stats_reg_num);
+ desc_data = (uint64_t *)(&desc[0].data[0]);
+ for (i = 0; i < stats_iterms; i++) {
+ /*
+ * Data memory is continuous and only the first descriptor has a
+ * header in this command.
+ */
+ *data += rte_le_to_cpu_64(*desc_data);
+ data++;
+ desc_data++;
}
rte_free(desc);
return 0;
}
-/*
- * Query Mac stat reg num command ,opcode id: 0x0033.
- * This command is used before send 'query_mac_stat command', the descriptor
- * number of 'query_mac_stat command' must match with reg_num in this command.
- * @praram rte_stats
- * Pointer to structure rte_eth_stats.
- * @return
- * 0 on success.
- */
static int
-hns3_mac_query_reg_num(struct rte_eth_dev *dev, uint32_t *desc_num)
+hns3_mac_query_reg_num(struct hns3_hw *hw, uint32_t *reg_num)
{
- struct hns3_adapter *hns = dev->data->dev_private;
- struct hns3_hw *hw = &hns->hw;
+#define HNS3_MAC_STATS_RSV_REG_NUM_ON_HIP08_B 3
struct hns3_cmd_desc desc;
- uint32_t *desc_data;
- uint32_t reg_num;
int ret;
hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_QUERY_MAC_REG_NUM, true);
ret = hns3_cmd_send(hw, &desc, 1);
- if (ret)
+ if (ret) {
+ hns3_err(hw, "failed to query MAC statistic reg number, ret = %d",
+ ret);
return ret;
+ }
- /*
- * The num of MAC statistics registers that are provided by IMP in this
- * version.
- */
- desc_data = (uint32_t *)(&desc.data[0]);
- reg_num = rte_le_to_cpu_32(*desc_data);
+ /* The number of MAC statistics registers are provided by firmware. */
+ *reg_num = rte_le_to_cpu_32(desc.data[0]);
+ if (*reg_num == 0) {
+ hns3_err(hw, "MAC statistic reg number is invalid!");
+ return -ENODATA;
+ }
/*
- * The descriptor number of 'query_additional_mac_stat command' is
- * '1 + (reg_num-3)/4 + ((reg_num-3)%4 !=0)';
- * This value is 83 in this version
+ * If driver doesn't request the firmware to report more MAC statistics
+ * iterms and the total number of MAC statistics registers by using new
+ * method, firmware will only reports the number of valid statistics
+ * registers. However, structure hns3_mac_stats in driver contains valid
+ * and reserved statistics iterms. In this case, the total register
+ * number must be added to three reserved statistics registers.
*/
- *desc_num = 1 + ((reg_num - 3) >> 2) +
- (uint32_t)(((reg_num - 3) & 0x3) ? 1 : 0);
+ *reg_num += HNS3_MAC_STATS_RSV_REG_NUM_ON_HIP08_B;
+
+ return 0;
+}
+
+int
+hns3_query_mac_stats_reg_num(struct hns3_hw *hw)
+{
+ uint32_t mac_stats_reg_num = 0;
+ int ret;
+
+ ret = hns3_mac_query_reg_num(hw, &mac_stats_reg_num);
+ if (ret)
+ return ret;
+
+ hw->mac_stats_reg_num = mac_stats_reg_num;
+ if (hw->mac_stats_reg_num > sizeof(hw->mac_stats) / sizeof(uint64_t))
+ hns3_warn(hw, "MAC stats reg number from firmware is greater than stats iterms in driver.");
return 0;
}
@@ -408,15 +411,8 @@ hns3_query_update_mac_stats(struct rte_eth_dev *dev)
{
struct hns3_adapter *hns = dev->data->dev_private;
struct hns3_hw *hw = &hns->hw;
- uint32_t desc_num;
- int ret;
- ret = hns3_mac_query_reg_num(dev, &desc_num);
- if (ret == 0)
- ret = hns3_update_mac_stats(hw, desc_num);
- else
- hns3_err(hw, "Query mac reg num fail : %d", ret);
- return ret;
+ return hns3_update_mac_stats(hw);
}
static int
@@ -5,11 +5,6 @@
#ifndef _HNS3_STATS_H_
#define _HNS3_STATS_H_
-/* stats macro */
-#define HNS3_MAC_CMD_NUM 21
-#define HNS3_RD_FIRST_STATS_NUM 2
-#define HNS3_RD_OTHER_STATS_NUM 4
-
/* TQP stats */
struct hns3_tqp_stats {
uint64_t rcb_tx_ring_pktnum_rcd; /* Total num of transmitted packets */
@@ -22,6 +17,7 @@ struct hns3_tqp_stats {
struct hns3_mac_stats {
uint64_t mac_tx_mac_pause_num;
uint64_t mac_rx_mac_pause_num;
+ uint64_t rsv0;
uint64_t mac_tx_pfc_pri0_pkt_num;
uint64_t mac_tx_pfc_pri1_pkt_num;
uint64_t mac_tx_pfc_pri2_pkt_num;
@@ -58,7 +54,7 @@ struct hns3_mac_stats {
uint64_t mac_tx_1519_2047_oct_pkt_num;
uint64_t mac_tx_2048_4095_oct_pkt_num;
uint64_t mac_tx_4096_8191_oct_pkt_num;
- uint64_t rsv0;
+ uint64_t rsv1;
uint64_t mac_tx_8192_9216_oct_pkt_num;
uint64_t mac_tx_9217_12287_oct_pkt_num;
uint64_t mac_tx_12288_16383_oct_pkt_num;
@@ -85,7 +81,7 @@ struct hns3_mac_stats {
uint64_t mac_rx_1519_2047_oct_pkt_num;
uint64_t mac_rx_2048_4095_oct_pkt_num;
uint64_t mac_rx_4096_8191_oct_pkt_num;
- uint64_t rsv1;
+ uint64_t rsv2;
uint64_t mac_rx_8192_9216_oct_pkt_num;
uint64_t mac_rx_9217_12287_oct_pkt_num;
uint64_t mac_rx_12288_16383_oct_pkt_num;
@@ -168,5 +164,6 @@ int hns3_stats_reset(struct rte_eth_dev *dev);
int hns3_tqp_stats_init(struct hns3_hw *hw);
void hns3_tqp_stats_uninit(struct hns3_hw *hw);
int hns3_update_imissed_stats(struct hns3_hw *hw, bool is_clear);
+int hns3_query_mac_stats_reg_num(struct hns3_hw *hw);
#endif /* _HNS3_STATS_H_ */