diff mbox series

[net-next,1/4] gro: give 'hash' variable in dev_gro_receive() a less confusing name

Message ID 20210312162127.239795-2-alobakin@pm.me (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series gro: micro-optimize dev_gro_receive() | expand

Checks

Context Check Description
netdev/cover_letter success Link
netdev/fixes_present success Link
netdev/patch_count success Link
netdev/tree_selection success Clearly marked for net-next
netdev/subject_prefix success Link
netdev/cc_maintainers success CCed 10 of 10 maintainers
netdev/source_inline success Was 0 now: 0
netdev/verify_signedoff success Link
netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 10 this patch: 10
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/verify_fixes success Link
netdev/checkpatch warning WARNING: braces {} are not necessary for any arm of this statement
netdev/build_allmodconfig_warn success Errors and warnings before: 10 this patch: 10
netdev/header_inline success Link

Commit Message

Alexander Lobakin March 12, 2021, 4:21 p.m. UTC 
'hash' stores not the flow hash, but the index of the GRO bucket
corresponding to it.
Change its name to 'bucket' to avoid confusion while reading lines
like '__set_bit(hash, &napi->gro_bitmask)'.

Signed-off-by: Alexander Lobakin <alobakin@pm.me>
---
 net/core/dev.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

--
2.30.2
diff mbox series

Patch

diff --git a/net/core/dev.c b/net/core/dev.c
index 2bfdd528c7c3..adc42ba7ffd8 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5956,7 +5956,7 @@  static void gro_flush_oldest(struct napi_struct *napi, struct list_head *head)

 static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff *skb)
 {
-	u32 hash = skb_get_hash_raw(skb) & (GRO_HASH_BUCKETS - 1);
+	u32 bucket = skb_get_hash_raw(skb) & (GRO_HASH_BUCKETS - 1);
 	struct list_head *head = &offload_base;
 	struct packet_offload *ptype;
 	__be16 type = skb->protocol;
@@ -6024,7 +6024,7 @@  static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff
 	if (pp) {
 		skb_list_del_init(pp);
 		napi_gro_complete(napi, pp);
-		napi->gro_hash[hash].count--;
+		napi->gro_hash[bucket].count--;
 	}

 	if (same_flow)
@@ -6033,10 +6033,10 @@  static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff
 	if (NAPI_GRO_CB(skb)->flush)
 		goto normal;

-	if (unlikely(napi->gro_hash[hash].count >= MAX_GRO_SKBS)) {
+	if (unlikely(napi->gro_hash[bucket].count >= MAX_GRO_SKBS)) {
 		gro_flush_oldest(napi, gro_head);
 	} else {
-		napi->gro_hash[hash].count++;
+		napi->gro_hash[bucket].count++;
 	}
 	NAPI_GRO_CB(skb)->count = 1;
 	NAPI_GRO_CB(skb)->age = jiffies;
@@ -6050,11 +6050,11 @@  static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff
 	if (grow > 0)
 		gro_pull_from_frag0(skb, grow);
 ok:
-	if (napi->gro_hash[hash].count) {
-		if (!test_bit(hash, &napi->gro_bitmask))
-			__set_bit(hash, &napi->gro_bitmask);
-	} else if (test_bit(hash, &napi->gro_bitmask)) {
-		__clear_bit(hash, &napi->gro_bitmask);
+	if (napi->gro_hash[bucket].count) {
+		if (!test_bit(bucket, &napi->gro_bitmask))
+			__set_bit(bucket, &napi->gro_bitmask);
+	} else if (test_bit(bucket, &napi->gro_bitmask)) {
+		__clear_bit(bucket, &napi->gro_bitmask);
 	}

 	return ret;