net/hns3: add runtime config for mailbox limit time

[dpdk.git] / drivers / net / hns3 / hns3_ethdev.c

diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c
index 693048f..6b89bce 100644 (file)
--- a/drivers/net/hns3/hns3_ethdev.c
+++ b/drivers/net/hns3/hns3_ethdev.c
@@ -7306,9 +7306,30 @@ hns3_parse_dev_caps_mask(const char *key, const char *value, void *extra_args)
        return 0;
 }
 
+static int
+hns3_parse_mbx_time_limit(const char *key, const char *value, void *extra_args)
+{
+       uint32_t val;
+
+       RTE_SET_USED(key);
+
+       val = strtoul(value, NULL, 10);
+
+       /*
+        * 500ms is empirical value in process of mailbox communication. If
+        * the delay value is set to one lower thanthe empirical value, mailbox
+        * communication may fail.
+        */
+       if (val > HNS3_MBX_DEF_TIME_LIMIT_MS && val <= UINT16_MAX)
+               *(uint16_t *)extra_args = val;
+
+       return 0;
+}
+
 void
 hns3_parse_devargs(struct rte_eth_dev *dev)
 {
+       uint16_t mbx_time_limit_ms = HNS3_MBX_DEF_TIME_LIMIT_MS;
        struct hns3_adapter *hns = dev->data->dev_private;
        uint32_t rx_func_hint = HNS3_IO_FUNC_HINT_NONE;
        uint32_t tx_func_hint = HNS3_IO_FUNC_HINT_NONE;
@@ -7329,6 +7350,9 @@ hns3_parse_devargs(struct rte_eth_dev *dev)
                           &hns3_parse_io_hint_func, &tx_func_hint);
        (void)rte_kvargs_process(kvlist, HNS3_DEVARG_DEV_CAPS_MASK,
                           &hns3_parse_dev_caps_mask, &dev_caps_mask);
+       (void)rte_kvargs_process(kvlist, HNS3_DEVARG_MBX_TIME_LIMIT_MS,
+                          &hns3_parse_mbx_time_limit, &mbx_time_limit_ms);
+
        rte_kvargs_free(kvlist);
 
        if (rx_func_hint != HNS3_IO_FUNC_HINT_NONE)
@@ -7344,6 +7368,11 @@ hns3_parse_devargs(struct rte_eth_dev *dev)
                hns3_warn(hw, "parsed %s = 0x%" PRIx64 ".",
                          HNS3_DEVARG_DEV_CAPS_MASK, dev_caps_mask);
        hns->dev_caps_mask = dev_caps_mask;
+
+       if (mbx_time_limit_ms != HNS3_MBX_DEF_TIME_LIMIT_MS)
+               hns3_warn(hw, "parsed %s = %u.", HNS3_DEVARG_MBX_TIME_LIMIT_MS,
+                               mbx_time_limit_ms);
+       hns->mbx_time_limit_ms = mbx_time_limit_ms;
 }
 
 static const struct eth_dev_ops hns3_eth_dev_ops = {
@@ -7600,6 +7629,7 @@ RTE_PMD_REGISTER_KMOD_DEP(net_hns3, "* igb_uio | vfio-pci");
 RTE_PMD_REGISTER_PARAM_STRING(net_hns3,
                HNS3_DEVARG_RX_FUNC_HINT "=vec|sve|simple|common "
                HNS3_DEVARG_TX_FUNC_HINT "=vec|sve|simple|common "
-               HNS3_DEVARG_DEV_CAPS_MASK "=<1-65535> ");
+               HNS3_DEVARG_DEV_CAPS_MASK "=<1-65535> "
+               HNS3_DEVARG_MBX_TIME_LIMIT_MS "=<uint16> ");
 RTE_LOG_REGISTER_SUFFIX(hns3_logtype_init, init, NOTICE);
 RTE_LOG_REGISTER_SUFFIX(hns3_logtype_driver, driver, NOTICE);