RepoMirrors/openwrt
1
0
Fork 0
mirror of git://git.openwrt.org/openwrt/openwrt.git synced 2025-02-07 07:12:45 +00:00
Code Issues Packages Projects Releases Wiki Activity

kernel: 5.10: simplify logic in packet mangling patch

Browse Source 
I had quite a hard time to understand what the change to net/core/dev.c
is supposed to do.

Simplify the change by returning NETDEV_TX_OK in case a eth_mangle_tx
callback was set but returned NULL instead of setting the return value
in the else branch.

Signed-off-by: Mathias Kresin <dev@kresin.me>
This commit is contained in:
Mathias Kresin 2021-10-23 21:14:04 +02:00
parent 1470009bf8
commit f7f12495bc
1 changed files with 7 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
target/linux/generic/hack-5.10/721-net-add-packet-mangeling.patch
View File

@ -105,33 +105,18 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
help
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3638,11 +3638,21 @@ static int xmit_one(struct sk_buff *skb,
@@ -3638,6 +3638,11 @@ static int xmit_one(struct sk_buff *skb,
if (dev_nit_active(dev))
dev_queue_xmit_nit(skb, dev);
- len = skb->len;
- PRANDOM_ADD_NOISE(skb, dev, txq, len + jiffies);
- trace_net_dev_start_xmit(skb, dev);
- rc = netdev_start_xmit(skb, dev, txq, more);
- trace_net_dev_xmit(skb, rc, dev, len);
+#ifdef CONFIG_ETHERNET_PACKET_MANGLE
+ if (!dev->eth_mangle_tx ||
+ (skb = dev->eth_mangle_tx(dev, skb)) != NULL)
+#else
+ if (1)
+ if (dev->eth_mangle_tx && !(skb = dev->eth_mangle_tx(dev, skb)))
+ return NETDEV_TX_OK;
+#endif
+ {
+ len = skb->len;
+ PRANDOM_ADD_NOISE(skb, dev, txq, len + jiffies);
+ trace_net_dev_start_xmit(skb, dev);
+ rc = netdev_start_xmit(skb, dev, txq, more);
+ trace_net_dev_xmit(skb, rc, dev, len);
+ } else {
+ rc = NETDEV_TX_OK;
+ }
return rc;
}
+
len = skb->len;
PRANDOM_ADD_NOISE(skb, dev, txq, len + jiffies);
trace_net_dev_start_xmit(skb, dev);
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -60,6 +60,7 @@