From 4ccbda1596de87e7f3cb798ac5fa2fdcce0d7a74 Mon Sep 17 00:00:00 2001 From: Souvik Dey Date: Mon, 13 Apr 2020 16:09:30 -0700 Subject: [PATCH] net/bnx2x: handle guest VLAN for SR-IOV In case of bnx2xvf pmd, tx packets can support vland id in 2 ways: 1. Setting the mbuf ol_flags=PKT_TX_VLAN_PKT and passing the vlanid in mbuf->vlan_tci. 2. The tx packet itself has the vlan id included in the packet. The first case is working as expected but the second case where the vlan id is included in thetx packets itself was found not working as expected. To handle that we need to properly set the start_bd bitfield and the vlan_or_ethertype instead of setting it to just the ethertype in case of VF. Signed-off-by: Souvik Dey Acked-by: Rasesh Mody --- drivers/net/bnx2x/bnx2x.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/drivers/net/bnx2x/bnx2x.c b/drivers/net/bnx2x/bnx2x.c index 0b4030e2b9..ff7646b25d 100644 --- a/drivers/net/bnx2x/bnx2x.c +++ b/drivers/net/bnx2x/bnx2x.c @@ -2216,11 +2216,27 @@ int bnx2x_tx_encap(struct bnx2x_tx_queue *txq, struct rte_mbuf *m0) tx_start_bd->vlan_or_ethertype = rte_cpu_to_le_16(pkt_prod); else { + /* when transmitting in a vf, start bd + * must hold the ethertype for fw to enforce it + */ struct rte_ether_hdr *eh = rte_pktmbuf_mtod(m0, struct rte_ether_hdr *); - tx_start_bd->vlan_or_ethertype = - rte_cpu_to_le_16(rte_be_to_cpu_16(eh->ether_type)); + /* Still need to consider inband vlan for enforced */ + if (eh->ether_type == + rte_cpu_to_be_16(RTE_ETHER_TYPE_VLAN)) { + struct rte_vlan_hdr *vh = + (struct rte_vlan_hdr *)(eh + 1); + tx_start_bd->bd_flags.as_bitfield |= + (X_ETH_INBAND_VLAN << + ETH_TX_BD_FLAGS_VLAN_MODE_SHIFT); + tx_start_bd->vlan_or_ethertype = + rte_cpu_to_le_16(ntohs(vh->vlan_tci)); + } else { + tx_start_bd->vlan_or_ethertype = + (rte_cpu_to_le_16 + (rte_be_to_cpu_16(eh->ether_type))); + } } }