net/cxgbe: implement reset hit counters for offloaded flows

Implement logic to reset hit counters for offloaded flows.

Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>

diff --git a/drivers/net/cxgbe/base/t4_tcb.h b/drivers/net/cxgbe/base/t4_tcb.h
index 68cda77..3c590e0 100644 (file)
--- a/drivers/net/cxgbe/base/t4_tcb.h
+++ b/drivers/net/cxgbe/base/t4_tcb.h
@@ -22,10 +22,16 @@
 #define V_TCB_TIMESTAMP(x) ((x) << S_TCB_TIMESTAMP)
 
 /* 223:192 */
+#define W_TCB_T_RTT_TS_RECENT_AGE    6
 #define S_TCB_T_RTT_TS_RECENT_AGE    0
 #define M_TCB_T_RTT_TS_RECENT_AGE    0xffffffffULL
 #define V_TCB_T_RTT_TS_RECENT_AGE(x) ((x) << S_TCB_T_RTT_TS_RECENT_AGE)
 
+/* 255:224 */
+#define S_TCB_T_RTSEQ_RECENT    0
+#define M_TCB_T_RTSEQ_RECENT    0xffffffffULL
+#define V_TCB_T_RTSEQ_RECENT(x) ((x) << S_TCB_T_RTSEQ_RECENT)
+
 #define S_TF_CCTRL_RFR    62
 
 #endif /* _T4_TCB_DEFS_H */

diff --git a/drivers/net/cxgbe/cxgbe_filter.c b/drivers/net/cxgbe/cxgbe_filter.c
index 86a6158..a77935a 100644 (file)
--- a/drivers/net/cxgbe/cxgbe_filter.c
+++ b/drivers/net/cxgbe/cxgbe_filter.c
@@ -1305,6 +1305,55 @@ get_count:
        return 0;
 }
 
+/*
+ * Clear the packet count for the specified filter.
+ */
+int cxgbe_clear_filter_count(struct adapter *adapter, unsigned int fidx,
+                            int hash, bool clear_byte)
+{
+       u64 tcb_mask = 0, tcb_val = 0;
+       struct filter_entry *f = NULL;
+       u16 tcb_word = 0;
+
+       if (is_hashfilter(adapter) && hash) {
+               if (fidx >= adapter->tids.ntids)
+                       return -ERANGE;
+
+               /* No hitcounts supported for T5 hashfilters */
+               if (is_t5(adapter->params.chip))
+                       return 0;
+
+               f = adapter->tids.tid_tab[fidx];
+       } else {
+               if (fidx >= adapter->tids.nftids)
+                       return -ERANGE;
+
+               f = &adapter->tids.ftid_tab[fidx];
+       }
+
+       if (!f || !f->valid)
+               return -EINVAL;
+
+       tcb_word = W_TCB_TIMESTAMP;
+       tcb_mask = V_TCB_TIMESTAMP(M_TCB_TIMESTAMP);
+       tcb_val = V_TCB_TIMESTAMP(0ULL);
+
+       set_tcb_field(adapter, f->tid, tcb_word, tcb_mask, tcb_val, 1);
+
+       if (clear_byte) {
+               tcb_word = W_TCB_T_RTT_TS_RECENT_AGE;
+               tcb_mask =
+                       V_TCB_T_RTT_TS_RECENT_AGE(M_TCB_T_RTT_TS_RECENT_AGE) |
+                       V_TCB_T_RTSEQ_RECENT(M_TCB_T_RTSEQ_RECENT);
+               tcb_val = V_TCB_T_RTT_TS_RECENT_AGE(0ULL) |
+                         V_TCB_T_RTSEQ_RECENT(0ULL);
+
+               set_tcb_field(adapter, f->tid, tcb_word, tcb_mask, tcb_val, 1);
+       }
+
+       return 0;
+}
+
 /**
  * Handle a Hash filter delete reply.
  */

diff --git a/drivers/net/cxgbe/cxgbe_filter.h b/drivers/net/cxgbe/cxgbe_filter.h
index 2d60777..6f6e25c 100644 (file)
--- a/drivers/net/cxgbe/cxgbe_filter.h
+++ b/drivers/net/cxgbe/cxgbe_filter.h
@@ -267,4 +267,6 @@ void hash_del_filter_rpl(struct adapter *adap,
 int validate_filter(struct adapter *adap, struct ch_filter_specification *fs);
 int cxgbe_get_filter_count(struct adapter *adapter, unsigned int fidx,
                           u64 *c, int hash, bool get_byte);
+int cxgbe_clear_filter_count(struct adapter *adapter, unsigned int fidx,
+                            int hash, bool clear_byte);
 #endif /* _CXGBE_FILTER_H_ */

diff --git a/drivers/net/cxgbe/cxgbe_flow.c b/drivers/net/cxgbe/cxgbe_flow.c
index 099499c..ee9920a 100644 (file)
--- a/drivers/net/cxgbe/cxgbe_flow.c
+++ b/drivers/net/cxgbe/cxgbe_flow.c
@@ -947,6 +947,7 @@ cxgbe_flow_query(struct rte_eth_dev *dev, struct rte_flow *flow,
                 const struct rte_flow_action *action, void *data,
                 struct rte_flow_error *e)
 {
+       struct adapter *adap = ethdev2adap(flow->dev);
        struct ch_filter_specification fs;
        struct rte_flow_query_count *c;
        struct filter_entry *f;
@@ -985,6 +986,8 @@ cxgbe_flow_query(struct rte_eth_dev *dev, struct rte_flow *flow,
        /* Query was successful */
        c->bytes_set = 1;
        c->hits_set = 1;
+       if (c->reset)
+               cxgbe_clear_filter_count(adap, flow->fidx, f->fs.cap, true);
 
        return 0; /* success / partial_success */
 }