From 2d83bb4644a9af0c7d643792af2cecdcf9d3f2d5 Mon Sep 17 00:00:00 2001 From: Jose Abreu Date: Thu, 16 Apr 2020 12:10:01 +0800 Subject: [PATCH] net: stmmac: Enable 16KB buffer size commit b2f3a481c4cd62f78391b836b64c0a6e72b503d2 upstream. XGMAC supports maximum MTU that can go to 16KB. Lets add this check in the calculation of RX buffer size. Fixes: 7ac6653a085b ("stmmac: Move the STMicroelectronics driver") Signed-off-by: Jose Abreu Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman Signed-off-by: Yang Yingliang --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 7ee0e46539c0..f069adfc2b35 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -1082,7 +1082,9 @@ static int stmmac_set_bfsize(int mtu, int bufsize) { int ret = bufsize; - if (mtu >= BUF_SIZE_4KiB) + if (mtu >= BUF_SIZE_8KiB) + ret = BUF_SIZE_16KiB; + else if (mtu >= BUF_SIZE_4KiB) ret = BUF_SIZE_8KiB; else if (mtu >= BUF_SIZE_2KiB) ret = BUF_SIZE_4KiB; -- GitLab