[PATCH net-next 5/9] bnxt_en: Add hardware NTUPLE filter for encapsulated packets.

[Michael Chan]

If skb_flow_dissect_flow_keys() returns with the encapsulation flag
set, pass the information to the firmware to setup the NTUPLE filter
accordingly.

Signed-off-by: Michael Chan <michael.c...@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c 
b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 516c5d7..f3d829f 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -3456,6 +3456,9 @@ static int bnxt_hwrm_cfa_ntuple_filter_free(struct bnxt 
*bp,
         CFA_NTUPLE_FILTER_ALLOC_REQ_ENABLES_DST_PORT_MASK |    \
         CFA_NTUPLE_FILTER_ALLOC_REQ_ENABLES_DST_ID)
 
+#define BNXT_NTP_TUNNEL_FLTR_FLAG                              \
+               CFA_NTUPLE_FILTER_ALLOC_REQ_ENABLES_TUNNEL_TYPE
+
 static int bnxt_hwrm_cfa_ntuple_filter_alloc(struct bnxt *bp,
                                             struct bnxt_ntuple_filter *fltr)
 {
@@ -3496,6 +3499,11 @@ static int bnxt_hwrm_cfa_ntuple_filter_alloc(struct bnxt 
*bp,
                req.dst_ipaddr[0] = keys->addrs.v4addrs.dst;
                req.dst_ipaddr_mask[0] = cpu_to_be32(0xffffffff);
        }
+       if (keys->control.flags & FLOW_DIS_ENCAPSULATION) {
+               req.enables |= cpu_to_le32(BNXT_NTP_TUNNEL_FLTR_FLAG);
+               req.tunnel_type =
+                       CFA_NTUPLE_FILTER_ALLOC_REQ_TUNNEL_TYPE_ANYTUNNEL;
+       }
 
        req.src_port = keys->ports.src;
        req.src_port_mask = cpu_to_be16(0xffff);
@@ -6869,6 +6877,7 @@ static bool bnxt_fltr_match(struct bnxt_ntuple_filter *f1,
            keys1->ports.ports == keys2->ports.ports &&
            keys1->basic.ip_proto == keys2->basic.ip_proto &&
            keys1->basic.n_proto == keys2->basic.n_proto &&
+           keys1->control.flags == keys2->control.flags &&
            ether_addr_equal(f1->src_mac_addr, f2->src_mac_addr) &&
            ether_addr_equal(f1->dst_mac_addr, f2->dst_mac_addr))
                return true;
@@ -6886,9 +6895,6 @@ static int bnxt_rx_flow_steer(struct net_device *dev, 
const struct sk_buff *skb,
        int rc = 0, idx, bit_id, l2_idx = 0;
        struct hlist_head *head;
 
-       if (skb->encapsulation)
-               return -EPROTONOSUPPORT;
-
        if (!ether_addr_equal(dev->dev_addr, eth->h_dest)) {
                struct bnxt_vnic_info *vnic = &bp->vnic_info[0];
                int off = 0, j;
@@ -6927,6 +6933,11 @@ static int bnxt_rx_flow_steer(struct net_device *dev, 
const struct sk_buff *skb,
                rc = -EPROTONOSUPPORT;
                goto err_free;
        }
+       if ((fkeys->control.flags & FLOW_DIS_ENCAPSULATION) &&
+           bp->hwrm_spec_code < 0x10601) {
+               rc = -EPROTONOSUPPORT;
+               goto err_free;
+       }
 
        memcpy(new_fltr->dst_mac_addr, eth->h_dest, ETH_ALEN);
        memcpy(new_fltr->src_mac_addr, eth->h_source, ETH_ALEN);
-- 
1.8.3.1