2022-03-04 07:10:04

by Dongli Zhang

[permalink] [raw]
Subject: [PATCH net-next v5 3/4] net: tun: split run_ebpf_filter() and pskb_trim() into different "if statement"

No functional change.

Just to split the if statement into different conditions to use
kfree_skb_reason() to trace the reason later.

Cc: Joao Martins <[email protected]>
Cc: Joe Jin <[email protected]>
Signed-off-by: Dongli Zhang <[email protected]>
Reviewed-by: David Ahern <[email protected]>
---
drivers/net/tun.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 2a0d8a5d7aec..6e06c846fe82 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1086,7 +1086,10 @@ static netdev_tx_t tun_net_xmit(struct sk_buff *skb, struct net_device *dev)
goto drop;

len = run_ebpf_filter(tun, skb, len);
- if (len == 0 || pskb_trim(skb, len))
+ if (len == 0)
+ goto drop;
+
+ if (pskb_trim(skb, len))
goto drop;

if (unlikely(skb_orphan_frags_rx(skb, GFP_ATOMIC)))
--
2.17.1