[PATCH net-next 3/3] net: bgmac: Remove short packet padding for DSA
From: Florian Fainelli <f.fainelli@gmail.com>
Date: 2018-01-04 06:13:19
Subsystem:
broadcom iproc gbit ethernet driver, networking drivers, the rest · Maintainers:
Rafał Miłecki, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
DSA now correctly pads short packets within net/dsa/tag_brcm.c such that this it is no longer necessary to do this within bgmac. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> --- drivers/net/ethernet/broadcom/bgmac.c | 15 --------------- 1 file changed, 15 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c
index 1d96cd594ade..8eef9fb6b1fe 100644
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c@@ -128,8 +128,6 @@ bgmac_dma_tx_add_buf(struct bgmac *bgmac, struct bgmac_dma_ring *ring, dma_desc->ctl1 = cpu_to_le32(ctl1); } -#define ENET_BRCM_TAG_LEN 4 - static netdev_tx_t bgmac_dma_tx_add(struct bgmac *bgmac, struct bgmac_dma_ring *ring, struct sk_buff *skb)
@@ -142,18 +140,6 @@ static netdev_tx_t bgmac_dma_tx_add(struct bgmac *bgmac, u32 flags; int i; - /* The Ethernet switch we are interfaced with needs packets to be at - * least 64 bytes (including FCS) otherwise they will be discarded when - * they enter the switch port logic. When Broadcom tags are enabled, we - * need to make sure that packets are at least 68 bytes - * (including FCS and tag) because the length verification is done after - * the Broadcom tag is stripped off the ingress packet. - */ - if (netdev_uses_dsa(net_dev)) { - if (skb_put_padto(skb, ETH_ZLEN + ENET_BRCM_TAG_LEN)) - goto err_stats; - } - if (skb->len > BGMAC_DESC_CTL1_LEN) { netdev_err(bgmac->net_dev, "Too long skb (%d)\n", skb->len); goto err_drop;
@@ -240,7 +226,6 @@ static netdev_tx_t bgmac_dma_tx_add(struct bgmac *bgmac, err_drop: dev_kfree_skb(skb); -err_stats: net_dev->stats.tx_dropped++; net_dev->stats.tx_errors++; return NETDEV_TX_OK;
--
2.14.1