From b803d1fded4085d268507a432dac8077ead68971 Mon Sep 17 00:00:00 2001 From: Haiyang Zhang Date: Fri, 9 Jun 2023 05:47:17 -0700 Subject: [PATCH] net: mana: Add support for vlan tagging To support vlan, use MANA_LONG_PKT_FMT if vlan tag is present in TX skb. Then extract the vlan tag from the skb struct, and save it to tx_oob for the NIC to transmit. For vlan tags on the payload, they are accepted by the NIC too. For RX, extract the vlan tag from CQE and put it into skb. Signed-off-by: Haiyang Zhang Signed-off-by: David S. Miller --- drivers/net/ethernet/microsoft/mana/mana_en.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/microsoft/mana/mana_en.c b/drivers/net/ethernet/microsoft/mana/mana_en.c index d907727..cd4d5ce 100644 --- a/drivers/net/ethernet/microsoft/mana/mana_en.c +++ b/drivers/net/ethernet/microsoft/mana/mana_en.c @@ -179,6 +179,14 @@ netdev_tx_t mana_start_xmit(struct sk_buff *skb, struct net_device *ndev) pkg.tx_oob.s_oob.short_vp_offset = txq->vp_offset; } + if (skb_vlan_tag_present(skb)) { + pkt_fmt = MANA_LONG_PKT_FMT; + pkg.tx_oob.l_oob.inject_vlan_pri_tag = 1; + pkg.tx_oob.l_oob.pcp = skb_vlan_tag_get_prio(skb); + pkg.tx_oob.l_oob.dei = skb_vlan_tag_get_cfi(skb); + pkg.tx_oob.l_oob.vlan_id = skb_vlan_tag_get_id(skb); + } + pkg.tx_oob.s_oob.pkt_fmt = pkt_fmt; if (pkt_fmt == MANA_SHORT_PKT_FMT) { @@ -1457,6 +1465,12 @@ static void mana_rx_skb(void *buf_va, struct mana_rxcomp_oob *cqe, skb_set_hash(skb, hash_value, PKT_HASH_TYPE_L3); } + if (cqe->rx_vlantag_present) { + u16 vlan_tci = cqe->rx_vlan_id; + + __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tci); + } + u64_stats_update_begin(&rx_stats->syncp); rx_stats->packets++; rx_stats->bytes += pkt_len; @@ -2451,8 +2465,9 @@ static int mana_probe_port(struct mana_context *ac, int port_idx, ndev->hw_features |= NETIF_F_RXCSUM; ndev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6; ndev->hw_features |= NETIF_F_RXHASH; - ndev->features = ndev->hw_features; - ndev->vlan_features = 0; + ndev->features = ndev->hw_features | NETIF_F_HW_VLAN_CTAG_TX | + NETIF_F_HW_VLAN_CTAG_RX; + ndev->vlan_features = ndev->features; ndev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT | NETDEV_XDP_ACT_NDO_XMIT; -- 2.7.4