[dpdk-dev] [PATCH v5 14/21] i40e: implement operation to flush flow director table
Jingjing Wu
jingjing.wu at intel.com
Thu Oct 30 08:26:39 CET 2014
Implement operation to flush flow director table
Signed-off-by: Jingjing Wu <jingjing.wu at intel.com>
---
lib/librte_pmd_i40e/i40e_fdir.c | 47 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 47 insertions(+)
diff --git a/lib/librte_pmd_i40e/i40e_fdir.c b/lib/librte_pmd_i40e/i40e_fdir.c
index 85df220..f59eb24 100644
--- a/lib/librte_pmd_i40e/i40e_fdir.c
+++ b/lib/librte_pmd_i40e/i40e_fdir.c
@@ -73,6 +73,10 @@
#define I40E_FDIR_WAIT_COUNT 10
#define I40E_FDIR_WAIT_INTERVAL_US 1000
+/* Wait count and interval for fdir filter flush */
+#define I40E_FDIR_FLUSH_RETRY 50
+#define I40E_FDIR_FLUSH_INTERVAL_MS 5
+
#define I40E_COUNTER_PF 2
/* Statistic counter index for one pf */
#define I40E_COUNTER_INDEX_FDIR(pf_id) (0 + (pf_id) * I40E_COUNTER_PF)
@@ -89,6 +93,7 @@ static int i40e_fdir_filter_programming(struct i40e_pf *pf,
enum i40e_filter_pctype pctype,
struct rte_eth_fdir_filter *filter,
bool add);
+static int i40e_fdir_flush(struct i40e_pf *pf);
static void i40e_fdir_info_get(struct i40e_pf *pf,
struct rte_eth_fdir_info *fdir);
@@ -876,6 +881,45 @@ i40e_fdir_filter_programming(struct i40e_pf *pf,
}
/*
+ * i40e_fdir_flush - clear all filters of Flow Director table
+ * @pf: board private structure
+ */
+static int
+i40e_fdir_flush(struct i40e_pf *pf)
+{
+ struct i40e_hw *hw = I40E_PF_TO_HW(pf);
+ uint32_t reg;
+ uint16_t guarant_cnt, best_cnt;
+ int i;
+
+ I40E_WRITE_REG(hw, I40E_PFQF_CTL_1, I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
+ I40E_WRITE_FLUSH(hw);
+
+ for (i = 0; i < I40E_FDIR_FLUSH_RETRY; i++) {
+ rte_delay_ms(I40E_FDIR_FLUSH_INTERVAL_MS);
+ reg = I40E_READ_REG(hw, I40E_PFQF_CTL_1);
+ if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
+ break;
+ }
+ if (i >= I40E_FDIR_FLUSH_RETRY) {
+ PMD_DRV_LOG(ERR, "FD table did not flush, may need more time.");
+ return -ETIMEDOUT;
+ }
+ guarant_cnt = (uint16_t)((I40E_READ_REG(hw, I40E_PFQF_FDSTAT) &
+ I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) >>
+ I40E_PFQF_FDSTAT_GUARANT_CNT_SHIFT);
+ best_cnt = (uint16_t)((I40E_READ_REG(hw, I40E_PFQF_FDSTAT) &
+ I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
+ I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
+ if (guarant_cnt != 0 || best_cnt != 0) {
+ PMD_DRV_LOG(ERR, "Failed to flush FD table.");
+ return -ENOSYS;
+ } else
+ PMD_DRV_LOG(INFO, "FD table Flush success.");
+ return 0;
+}
+
+/*
* i40e_fdir_info_get - get information of Flow Director
* @pf: ethernet device to get info from
* @fdir: a pointer to a structure of type *rte_eth_fdir_info* to be filled with
@@ -934,6 +978,9 @@ i40e_fdir_ctrl_func(struct i40e_pf *pf, enum rte_filter_op filter_op, void *arg)
(struct rte_eth_fdir_filter *)arg,
FALSE);
break;
+ case RTE_ETH_FILTER_FLUSH:
+ ret = i40e_fdir_flush(pf);
+ break;
case RTE_ETH_FILTER_INFO:
i40e_fdir_info_get(pf, (struct rte_eth_fdir_info *)arg);
break;
--
1.8.1.4
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