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net: mana: Add support for vlan tagging

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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 <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Haiyang Zhang
2023-06-09 05:47:17 -07:00
committed by David S. Miller
parent 998b85f046
commit b803d1fded
1 changed files with 17 additions and 2 deletions
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19
drivers/net/ethernet/microsoft/mana/mana_en.c
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@@ -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;