realtek: Fix RTL839x TX CPU-Tag

Setting bits 20 and 23 in a u16 is obviously wrong.
According to https://www.svanheule.net/realtek/cypress/cputag
cpu_tag[2] starts at bit 48 in the cpu-tag structure, so
bit 43 is bit 5 in cpu_tag[2] and bit 40 is bit 8 in
cpu_tag[2].

Signed-off-by: Birger Koblitz <git@birger-koblitz.de>

diff --git a/target/linux/realtek/files-5.10/drivers/net/ethernet/rtl838x_eth.c b/target/linux/realtek/files-5.10/drivers/net/ethernet/rtl838x_eth.c
index 2021e53c39ab6b6e2cd18fda1d3fe22a5946740c..fdc2227c19c613f455bf014234e8070bbcf02f2e 100644 (file)
--- a/target/linux/realtek/files-5.10/drivers/net/ethernet/rtl838x_eth.c
+++ b/target/linux/realtek/files-5.10/drivers/net/ethernet/rtl838x_eth.c
@@ -126,8 +126,8 @@ static void rtl839x_create_tx_header(struct p_hdr *h, int dest_port, int prio)
                        h->cpu_tag[4] = BIT(dest_port) >> 16;
                        h->cpu_tag[5] = BIT(dest_port) & 0xffff;
                }
-               h->cpu_tag[2] |= BIT(20); // Enable destination port mask use
-               h->cpu_tag[2] |= BIT(23); // Enable L2 Learning
+               h->cpu_tag[2] |= BIT(5); // Enable destination port mask use
+               h->cpu_tag[2] |= BIT(8); // Enable L2 Learning
                // Set internal priority and AS_PRIO
                if (prio >= 0)
                        h->cpu_tag[1] |= prio | BIT(3);