diff options
| author | Michael Chan <michael.chan@broadcom.com> | 2023-12-01 14:39:17 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-12-04 15:12:48 -0800 |
| commit | c2f8063309da9be81679e27cabd4a9dbf9be43cc (patch) | |
| tree | 6498b63ffd4ad35fbc97716c0cbfff333a2fe3a2 | |
| parent | 13d2d3d381ee9844f89bd436ab0f44204660027e (diff) | |
bnxt_en: Refactor RX VLAN acceleration logic.
Refactor the logic in the RX path that checks for the accelerated VLAN
tag by adding a new function. This will make it easier to support
the new receive logic on P7 chips.
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://lore.kernel.org/r/20231201223924.26955-9-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.c | 44 |
1 files changed, 31 insertions, 13 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index b38c17a27903..9aca38b6f196 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -1783,6 +1783,34 @@ static void bnxt_deliver_skb(struct bnxt *bp, struct bnxt_napi *bnapi, napi_gro_receive(&bnapi->napi, skb); } +static struct sk_buff *bnxt_rx_vlan(struct sk_buff *skb, u8 cmp_type, + struct rx_cmp *rxcmp, + struct rx_cmp_ext *rxcmp1) +{ + __be16 vlan_proto; + u16 vtag; + + if (cmp_type == CMP_TYPE_RX_L2_CMP) { + __le32 flags2 = rxcmp1->rx_cmp_flags2; + u32 meta_data; + + if (!(flags2 & cpu_to_le32(RX_CMP_FLAGS2_META_FORMAT_VLAN))) + return skb; + + meta_data = le32_to_cpu(rxcmp1->rx_cmp_meta_data); + vtag = meta_data & RX_CMP_FLAGS2_METADATA_TCI_MASK; + vlan_proto = htons(meta_data >> RX_CMP_FLAGS2_METADATA_TPID_SFT); + if (eth_type_vlan(vlan_proto)) + __vlan_hwaccel_put_tag(skb, vlan_proto, vtag); + else + goto vlan_err; + } + return skb; +vlan_err: + dev_kfree_skb(skb); + return NULL; +} + /* returns the following: * 1 - 1 packet successfully received * 0 - successful TPA_START, packet not completed yet @@ -2001,20 +2029,10 @@ static int bnxt_rx_pkt(struct bnxt *bp, struct bnxt_cp_ring_info *cpr, cfa_code = RX_CMP_CFA_CODE(rxcmp1); skb->protocol = eth_type_trans(skb, bnxt_get_pkt_dev(bp, cfa_code)); - if ((rxcmp1->rx_cmp_flags2 & - cpu_to_le32(RX_CMP_FLAGS2_META_FORMAT_VLAN)) && - (skb->dev->features & BNXT_HW_FEATURE_VLAN_ALL_RX)) { - u32 meta_data = le32_to_cpu(rxcmp1->rx_cmp_meta_data); - u16 vtag = meta_data & RX_CMP_FLAGS2_METADATA_TCI_MASK; - __be16 vlan_proto = htons(meta_data >> - RX_CMP_FLAGS2_METADATA_TPID_SFT); - - if (eth_type_vlan(vlan_proto)) { - __vlan_hwaccel_put_tag(skb, vlan_proto, vtag); - } else { - dev_kfree_skb(skb); + if (skb->dev->features & BNXT_HW_FEATURE_VLAN_ALL_RX) { + skb = bnxt_rx_vlan(skb, cmp_type, rxcmp, rxcmp1); + if (!skb) goto next_rx; - } } skb_checksum_none_assert(skb); |