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authorDavid Miller <davem@davemloft.net>2018-06-24 14:13:49 +0900
committerDavid S. Miller <davem@davemloft.net>2018-06-26 11:33:04 +0900
commitd4546c2509b1e9cd082e3682dcec98472e37ee5a (patch)
treeeb7393380a20d8ccaf8f94204fe2c15d2639a780 /drivers/net/geneve.c
parent9ff3b40e411c00870d1c29cd6b843fca7c4160ae (diff)
downloadlinux-stericsson-d4546c2509b1e9cd082e3682dcec98472e37ee5a.tar.gz
net: Convert GRO SKB handling to list_head.
Manage pending per-NAPI GRO packets via list_head. Return an SKB pointer from the GRO receive handlers. When GRO receive handlers return non-NULL, it means that this SKB needs to be completed at this time and removed from the NAPI queue. Several operations are greatly simplified by this transformation, especially timing out the oldest SKB in the list when gro_count exceeds MAX_GRO_SKBS, and napi_gro_flush() which walks the queue in reverse order. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/geneve.c')
-rw-r--r--drivers/net/geneve.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c
index 750eaa53bf0c..3e94375b9b01 100644
--- a/drivers/net/geneve.c
+++ b/drivers/net/geneve.c
@@ -418,11 +418,12 @@ static int geneve_hlen(struct genevehdr *gh)
return sizeof(*gh) + gh->opt_len * 4;
}
-static struct sk_buff **geneve_gro_receive(struct sock *sk,
- struct sk_buff **head,
- struct sk_buff *skb)
+static struct sk_buff *geneve_gro_receive(struct sock *sk,
+ struct list_head *head,
+ struct sk_buff *skb)
{
- struct sk_buff *p, **pp = NULL;
+ struct sk_buff *pp = NULL;
+ struct sk_buff *p;
struct genevehdr *gh, *gh2;
unsigned int hlen, gh_len, off_gnv;
const struct packet_offload *ptype;
@@ -449,7 +450,7 @@ static struct sk_buff **geneve_gro_receive(struct sock *sk,
goto out;
}
- for (p = *head; p; p = p->next) {
+ list_for_each_entry(p, head, list) {
if (!NAPI_GRO_CB(p)->same_flow)
continue;