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net/bnxt: fix tunnel stateless offloads

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The HW only supports tunnel header parsing globally for supported tunnel
types. When a function uses one default VNIC to receive both the tunnel
and non-tunnel packets, applying the same stateless offload operation to
both tunnel and non-tunnel packets can cause problems in certain scenarios.
To workaround these problems, the firmware advertises no tunnel header
parsing capabilities to the driver using the HWRM_FUNC_QCAPS.
The driver must check this flag setting and accordingly not advertise
tunnel packet stateless offload capabilities to the stack.

If the device supports VXLAN, GRE, IPIP and GENEVE tunnel parsing,
then reports RX_OFFLOAD_OUTER_IPV4_CKSUM, RX_OFFLOAD_OUTER_UDP_CKSUM
and TX_OFFLOAD_OUTER_IPV4_CKSUM in the Rx/Tx offload capabilities of
the device.
Also, advertise tunnel TSO capabilities based on FW support.

Fixes: 0a6d2a720078 ("net/bnxt: get device infos")
Cc: stable@dpdk.org

Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
This commit is contained in:
Kalesh AP 2022-04-27 20:28:09 +05:30 committed by Ajit Khaparde
parent 0a90c56eac
commit c0278f6e52
5 changed files with 42 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/bnxt/bnxt.h
View File

@ -871,6 +871,7 @@ struct bnxt {
uint32_t max_mcast_addr; /* maximum number of mcast filters supported */
struct rte_eth_rss_conf rss_conf; /* RSS configuration. */
uint16_t tunnel_disable_flag; /* tunnel stateless offloads status */
};
static

5
drivers/net/bnxt/bnxt_hwrm.c
View File

@ -939,6 +939,11 @@ static int __bnxt_hwrm_func_qcaps(struct bnxt *bp)
bp->fw_cap |= BNXT_FW_CAP_VLAN_TX_INSERT;
PMD_DRV_LOG(DEBUG, "VLAN acceleration for TX is enabled\n");
}
bp->tunnel_disable_flag = rte_le_to_cpu_16(resp->tunnel_disable_flag);
if (bp->tunnel_disable_flag)
PMD_DRV_LOG(DEBUG, "Tunnel parsing capability is disabled, flags : %#x\n",
bp->tunnel_disable_flag);
unlock:
HWRM_UNLOCK();

20
drivers/net/bnxt/bnxt_hwrm.h
View File

@ -121,6 +121,26 @@ struct bnxt_pf_resource_info {
#define BNXT_CTX_VAL_INVAL 0xFFFF
#define BNXT_TUNNELED_OFFLOADS_CAP_VXLAN_EN(bp) \
(!((bp)->tunnel_disable_flag & HWRM_FUNC_QCAPS_OUTPUT_TUNNEL_DISABLE_FLAG_DISABLE_VXLAN))
#define BNXT_TUNNELED_OFFLOADS_CAP_NGE_EN(bp) \
(!((bp)->tunnel_disable_flag & HWRM_FUNC_QCAPS_OUTPUT_TUNNEL_DISABLE_FLAG_DISABLE_NGE))
#define BNXT_TUNNELED_OFFLOADS_CAP_GRE_EN(bp) \
(!((bp)->tunnel_disable_flag & HWRM_FUNC_QCAPS_OUTPUT_TUNNEL_DISABLE_FLAG_DISABLE_GRE))
#define BNXT_TUNNELED_OFFLOADS_CAP_IPINIP_EN(bp) \
(!((bp)->tunnel_disable_flag & HWRM_FUNC_QCAPS_OUTPUT_TUNNEL_DISABLE_FLAG_DISABLE_IPINIP))
/*
* If the device supports VXLAN, GRE, IPIP and GENEVE tunnel parsing, then report
* RTE_ETH_RX_OFFLOAD_OUTER_IPV4_CKSUM, RTE_ETH_RX_OFFLOAD_OUTER_UDP_CKSUM and
* RTE_ETH_TX_OFFLOAD_OUTER_IPV4_CKSUM in the Rx/Tx offload capabilities of the device.
*/
#define BNXT_TUNNELED_OFFLOADS_CAP_ALL_EN(bp) \
(BNXT_TUNNELED_OFFLOADS_CAP_VXLAN_EN(bp) && \
BNXT_TUNNELED_OFFLOADS_CAP_NGE_EN(bp) && \
BNXT_TUNNELED_OFFLOADS_CAP_GRE_EN(bp) && \
BNXT_TUNNELED_OFFLOADS_CAP_IPINIP_EN(bp))
int bnxt_hwrm_cfa_l2_clear_rx_mask(struct bnxt *bp,
struct bnxt_vnic_info *vnic);
int bnxt_hwrm_cfa_l2_set_rx_mask(struct bnxt *bp, struct bnxt_vnic_info *vnic,

7
drivers/net/bnxt/bnxt_rxq.c
View File

@ -34,14 +34,15 @@ uint64_t bnxt_get_rx_port_offloads(struct bnxt *bp)
RTE_ETH_RX_OFFLOAD_SCATTER |
RTE_ETH_RX_OFFLOAD_RSS_HASH;
rx_offload_capa |= RTE_ETH_RX_OFFLOAD_OUTER_IPV4_CKSUM |
RTE_ETH_RX_OFFLOAD_OUTER_UDP_CKSUM;
if (bp->flags & BNXT_FLAG_PTP_SUPPORTED)
rx_offload_capa |= RTE_ETH_RX_OFFLOAD_TIMESTAMP;
if (bp->vnic_cap_flags & BNXT_VNIC_CAP_VLAN_RX_STRIP)
rx_offload_capa |= RTE_ETH_RX_OFFLOAD_VLAN_STRIP;
if (BNXT_TUNNELED_OFFLOADS_CAP_ALL_EN(bp))
rx_offload_capa |= RTE_ETH_RX_OFFLOAD_OUTER_IPV4_CKSUM |
RTE_ETH_RX_OFFLOAD_OUTER_UDP_CKSUM;
return rx_offload_capa;
}

18
drivers/net/bnxt/bnxt_txq.c
View File

@ -28,15 +28,21 @@ uint64_t bnxt_get_tx_port_offloads(struct bnxt *bp)
RTE_ETH_TX_OFFLOAD_QINQ_INSERT |
RTE_ETH_TX_OFFLOAD_MULTI_SEGS;
tx_offload_capa |= RTE_ETH_TX_OFFLOAD_OUTER_IPV4_CKSUM |
RTE_ETH_TX_OFFLOAD_VXLAN_TNL_TSO |
RTE_ETH_TX_OFFLOAD_GRE_TNL_TSO |
RTE_ETH_TX_OFFLOAD_IPIP_TNL_TSO |
RTE_ETH_TX_OFFLOAD_GENEVE_TNL_TSO;
if (bp->fw_cap & BNXT_FW_CAP_VLAN_TX_INSERT)
tx_offload_capa |= RTE_ETH_TX_OFFLOAD_VLAN_INSERT;
if (BNXT_TUNNELED_OFFLOADS_CAP_ALL_EN(bp))
tx_offload_capa |= RTE_ETH_TX_OFFLOAD_OUTER_IPV4_CKSUM;
if (BNXT_TUNNELED_OFFLOADS_CAP_VXLAN_EN(bp))
tx_offload_capa |= RTE_ETH_TX_OFFLOAD_VXLAN_TNL_TSO;
if (BNXT_TUNNELED_OFFLOADS_CAP_GRE_EN(bp))
tx_offload_capa |= RTE_ETH_TX_OFFLOAD_GRE_TNL_TSO;
if (BNXT_TUNNELED_OFFLOADS_CAP_NGE_EN(bp))
tx_offload_capa |= RTE_ETH_TX_OFFLOAD_GENEVE_TNL_TSO;
if (BNXT_TUNNELED_OFFLOADS_CAP_IPINIP_EN(bp))
tx_offload_capa |= RTE_ETH_TX_OFFLOAD_IPIP_TNL_TSO;
return tx_offload_capa;
}