diff options
Diffstat (limited to 'target/linux/realtek/patches-5.4/701-net-dsa-add-rtl838x-support-for-tag-trailer.patch')
-rw-r--r-- | target/linux/realtek/patches-5.4/701-net-dsa-add-rtl838x-support-for-tag-trailer.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/target/linux/realtek/patches-5.4/701-net-dsa-add-rtl838x-support-for-tag-trailer.patch b/target/linux/realtek/patches-5.4/701-net-dsa-add-rtl838x-support-for-tag-trailer.patch new file mode 100644 index 0000000000..9d4140c8e1 --- /dev/null +++ b/target/linux/realtek/patches-5.4/701-net-dsa-add-rtl838x-support-for-tag-trailer.patch @@ -0,0 +1,39 @@ +Index: linux-5.4.77/net/dsa/tag_trailer.c +=================================================================== +--- linux-5.4.77.orig/net/dsa/tag_trailer.c ++++ linux-5.4.77/net/dsa/tag_trailer.c +@@ -44,7 +44,12 @@ static struct sk_buff *trailer_xmit(stru + + trailer = skb_put(nskb, 4); + trailer[0] = 0x80; ++ ++#ifdef CONFIG_NET_DSA_RTL83XX ++ trailer[1] = dp->index; ++#else + trailer[1] = 1 << dp->index; ++#endif /* CONFIG_NET_DSA_RTL83XX */ + trailer[2] = 0x10; + trailer[3] = 0x00; + +@@ -61,12 +66,20 @@ static struct sk_buff *trailer_rcv(struc + return NULL; + + trailer = skb_tail_pointer(skb) - 4; ++ ++#ifdef CONFIG_NET_DSA_RTL83XX ++ if (trailer[0] != 0x80 || (trailer[1] & 0xe0) != 0x00 || ++ (trailer[2] & 0xef) != 0x00 || trailer[3] != 0x00) ++ return NULL; ++ ++ source_port = trailer[1] & 0x1f; ++#else + if (trailer[0] != 0x80 || (trailer[1] & 0xf8) != 0x00 || + (trailer[2] & 0xef) != 0x00 || trailer[3] != 0x00) + return NULL; + + source_port = trailer[1] & 7; +- ++#endif + skb->dev = dsa_master_find_slave(dev, 0, source_port); + if (!skb->dev) + return NULL; |