net: hns3: add trace events support for hns3 driver

driver inclusion
category: bugfix
bugzilla: NA
CVE: NA

change for hns3 trace to debug tso and gro problem

Feature or Bugfix:Bugfix
Signed-off-by: NYunsheng Lin <linyunsheng@huawei.com>
Reviewed-by: Nlipeng <lipeng321@huawei.com>
Reviewed-by: NYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

drivers/net/ethernet/hisilicon/hns3/hns3_enet.c

@@ -717,6 +717,8 @@ static int hns3_set_tso(struct sk_buff *skb, u32 *paylen,
 	/* get MSS for TSO */
 	*mss = skb_shinfo(skb)->gso_size;
 
+	trace_hns3_tso(skb);
+
 	return 0;
 }
 
@@ -1235,10 +1237,10 @@ static int hns3_nic_maybe_stop_tx(struct hns3_enet_ring *ring,
 	if (unlikely(bd_num > HNS3_MAX_BD_PER_FRAG)) {
 		struct sk_buff *new_skb;
 
-		if (skb_is_gso(skb) && !hns3_skb_need_linearized(skb))
-			goto out;
-
+		if (skb_is_gso(skb) && !hns3_skb_need_linearized(skb)) {
 			trace_hns3_over_8bd(skb);
+			goto out;
+		}
 
 		bd_num = hns3_tx_bd_count(skb->len);
 		if (unlikely(ring_space(ring) < bd_num))
@@ -2506,6 +2508,9 @@ static int hns3_gro_complete(struct sk_buff *skb, u32 l234info)
 	skb->csum_start = (unsigned char *)th - skb->head;
 	skb->csum_offset = offsetof(struct tcphdr, check);
 	skb->ip_summed = CHECKSUM_PARTIAL;
+
+	trace_hns3_gro(skb);
+
 	return 0;
 }
 

drivers/net/ethernet/hisilicon/hns3/hns3_trace.h

@@ -11,31 +11,57 @@
 
 #define DESC_NR		(sizeof(struct hns3_desc) / sizeof(u32))
 
-TRACE_EVENT(hns3_over_8bd,
+DECLARE_EVENT_CLASS(hns3_skb_template,
 	TP_PROTO(struct sk_buff *skb),
 	TP_ARGS(skb),
 
 	TP_STRUCT__entry(
 		__field(unsigned int, headlen)
+		__field(unsigned int, len)
 		__field(__u8, nr_frags)
+		__field(__u8, ip_summed)
+		__field(unsigned int, hdr_len)
 		__field(unsigned short, gso_size)
+		__field(unsigned short, gso_segs)
+		__field(unsigned int, gso_type)
 		__array(__u32, size, MAX_SKB_FRAGS)
 	),
 
 	TP_fast_assign(
 		__entry->headlen = skb_headlen(skb);
+		__entry->len = skb->len;
 		__entry->nr_frags = skb_shinfo(skb)->nr_frags;
 		__entry->gso_size = skb_shinfo(skb)->gso_size;
+		__entry->gso_segs = skb_shinfo(skb)->gso_segs;
+		__entry->gso_type = skb_shinfo(skb)->gso_type;
+		__entry->hdr_len = skb->encapsulation ?
+		skb_inner_transport_offset(skb) + inner_tcp_hdrlen(skb) :
+		skb_transport_offset(skb) + tcp_hdrlen(skb);
+		__entry->ip_summed = skb->ip_summed;
 		hns3_shinfo_pack(skb_shinfo(skb), __entry->size);
 	),
 
 	TP_printk(
-		"headlen: %u, nr_frags: %u, gso: %u frag size: %s",
-		__entry->headlen, __entry->gso_size, __entry->nr_frags,
+		"len: %u, %u, %u, cs: %u, gso: %u, %u, %x, frag(%u): %s",
+		__entry->headlen, __entry->len, __entry->hdr_len,
+		__entry->ip_summed, __entry->gso_size, __entry->gso_segs,
+		__entry->gso_type, __entry->nr_frags,
 		__print_array(__entry->size, MAX_SKB_FRAGS, sizeof(__u32))
 	)
 );
 
+DEFINE_EVENT(hns3_skb_template, hns3_over_8bd,
+	TP_PROTO(struct sk_buff *skb),
+	TP_ARGS(skb));
+
+DEFINE_EVENT(hns3_skb_template, hns3_gro,
+        TP_PROTO(struct sk_buff *skb),
+        TP_ARGS(skb));
+
+DEFINE_EVENT(hns3_skb_template, hns3_tso,
+        TP_PROTO(struct sk_buff *skb),
+        TP_ARGS(skb));
+
 TRACE_EVENT(hns3_tx_desc,
 	TP_PROTO(struct hns3_enet_ring *ring),
 	TP_ARGS(ring),