bnxt_en: add hwrm FW cmds for cfa_encap_record and decap_filter

Add routines for issuing the hwrm_cfa_encap_record_alloc/free
and hwrm_cfa_decap_filter_alloc/free FW cmds needed for
supporting vxlan encap/decap offload.

Signed-off-by: Sathya Perla <sathya.perla@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c
index f14edc9..0d258d3 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c
@@ -585,13 +585,85 @@ static int hwrm_cfa_decap_filter_alloc(struct bnxt *bp,
                                       __le32 ref_decap_handle,
                                       __le32 *decap_filter_handle)
 {
-       return 0;
+       struct hwrm_cfa_decap_filter_alloc_output *resp =
+                                               bp->hwrm_cmd_resp_addr;
+       struct hwrm_cfa_decap_filter_alloc_input req = { 0 };
+       struct ip_tunnel_key *tun_key = &flow->tun_key;
+       u32 enables = 0;
+       int rc;
+
+       bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_DECAP_FILTER_ALLOC, -1, -1);
+
+       req.flags = cpu_to_le32(CFA_DECAP_FILTER_ALLOC_REQ_FLAGS_OVS_TUNNEL);
+       enables |= CFA_DECAP_FILTER_ALLOC_REQ_ENABLES_TUNNEL_TYPE |
+                  CFA_DECAP_FILTER_ALLOC_REQ_ENABLES_IP_PROTOCOL;
+       req.tunnel_type = CFA_DECAP_FILTER_ALLOC_REQ_TUNNEL_TYPE_VXLAN;
+       req.ip_protocol = CFA_DECAP_FILTER_ALLOC_REQ_IP_PROTOCOL_UDP;
+
+       if (flow->flags & BNXT_TC_FLOW_FLAGS_TUNL_ID) {
+               enables |= CFA_DECAP_FILTER_ALLOC_REQ_ENABLES_TUNNEL_ID;
+               /* tunnel_id is wrongly defined in hsi defn. as __le32 */
+               req.tunnel_id = tunnel_id_to_key32(tun_key->tun_id);
+       }
+
+       if (flow->flags & BNXT_TC_FLOW_FLAGS_TUNL_ETH_ADDRS) {
+               enables |= CFA_DECAP_FILTER_ALLOC_REQ_ENABLES_DST_MACADDR |
+                          CFA_DECAP_FILTER_ALLOC_REQ_ENABLES_SRC_MACADDR;
+               ether_addr_copy(req.dst_macaddr, l2_info->dmac);
+               ether_addr_copy(req.src_macaddr, l2_info->smac);
+       }
+       if (l2_info->num_vlans) {
+               enables |= CFA_DECAP_FILTER_ALLOC_REQ_ENABLES_T_IVLAN_VID;
+               req.t_ivlan_vid = l2_info->inner_vlan_tci;
+       }
+
+       enables |= CFA_DECAP_FILTER_ALLOC_REQ_ENABLES_ETHERTYPE;
+       req.ethertype = htons(ETH_P_IP);
+
+       if (flow->flags & BNXT_TC_FLOW_FLAGS_TUNL_IPV4_ADDRS) {
+               enables |= CFA_DECAP_FILTER_ALLOC_REQ_ENABLES_SRC_IPADDR |
+                          CFA_DECAP_FILTER_ALLOC_REQ_ENABLES_DST_IPADDR |
+                          CFA_DECAP_FILTER_ALLOC_REQ_ENABLES_IPADDR_TYPE;
+               req.ip_addr_type = CFA_DECAP_FILTER_ALLOC_REQ_IP_ADDR_TYPE_IPV4;
+               req.dst_ipaddr[0] = tun_key->u.ipv4.dst;
+               req.src_ipaddr[0] = tun_key->u.ipv4.src;
+       }
+
+       if (flow->flags & BNXT_TC_FLOW_FLAGS_TUNL_PORTS) {
+               enables |= CFA_DECAP_FILTER_ALLOC_REQ_ENABLES_DST_PORT;
+               req.dst_port = tun_key->tp_dst;
+       }
+
+       /* Eventhough the decap_handle returned by hwrm_cfa_decap_filter_alloc
+        * is defined as __le32, l2_ctxt_ref_id is defined in HSI as __le16.
+        */
+       req.l2_ctxt_ref_id = (__force __le16)ref_decap_handle;
+       req.enables = cpu_to_le32(enables);
+
+       mutex_lock(&bp->hwrm_cmd_lock);
+       rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+       if (!rc)
+               *decap_filter_handle = resp->decap_filter_id;
+       else
+               netdev_info(bp->dev, "%s: Error rc=%d", __func__, rc);
+       mutex_unlock(&bp->hwrm_cmd_lock);
+
+       return rc;
 }
 
 static int hwrm_cfa_decap_filter_free(struct bnxt *bp,
                                      __le32 decap_filter_handle)
 {
-       return 0;
+       struct hwrm_cfa_decap_filter_free_input req = { 0 };
+       int rc;
+
+       bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_DECAP_FILTER_FREE, -1, -1);
+       req.decap_filter_id = decap_filter_handle;
+
+       rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+       if (rc)
+               netdev_info(bp->dev, "%s: Error rc=%d", __func__, rc);
+       return rc;
 }
 
 static int hwrm_cfa_encap_record_alloc(struct bnxt *bp,
@@ -599,13 +671,62 @@ static int hwrm_cfa_encap_record_alloc(struct bnxt *bp,
                                       struct bnxt_tc_l2_key *l2_info,
                                       __le32 *encap_record_handle)
 {
-       return 0;
+       struct hwrm_cfa_encap_record_alloc_output *resp =
+                                               bp->hwrm_cmd_resp_addr;
+       struct hwrm_cfa_encap_record_alloc_input req = { 0 };
+       struct hwrm_cfa_encap_data_vxlan *encap =
+                       (struct hwrm_cfa_encap_data_vxlan *)&req.encap_data;
+       struct hwrm_vxlan_ipv4_hdr *encap_ipv4 =
+                               (struct hwrm_vxlan_ipv4_hdr *)encap->l3;
+       int rc;
+
+       bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_ENCAP_RECORD_ALLOC, -1, -1);
+
+       req.encap_type = CFA_ENCAP_RECORD_ALLOC_REQ_ENCAP_TYPE_VXLAN;
+
+       ether_addr_copy(encap->dst_mac_addr, l2_info->dmac);
+       ether_addr_copy(encap->src_mac_addr, l2_info->smac);
+       if (l2_info->num_vlans) {
+               encap->num_vlan_tags = l2_info->num_vlans;
+               encap->ovlan_tci = l2_info->inner_vlan_tci;
+               encap->ovlan_tpid = l2_info->inner_vlan_tpid;
+       }
+
+       encap_ipv4->ver_hlen = 4 << VXLAN_IPV4_HDR_VER_HLEN_VERSION_SFT;
+       encap_ipv4->ver_hlen |= 5 << VXLAN_IPV4_HDR_VER_HLEN_HEADER_LENGTH_SFT;
+       encap_ipv4->ttl = encap_key->ttl;
+
+       encap_ipv4->dest_ip_addr = encap_key->u.ipv4.dst;
+       encap_ipv4->src_ip_addr = encap_key->u.ipv4.src;
+       encap_ipv4->protocol = IPPROTO_UDP;
+
+       encap->dst_port = encap_key->tp_dst;
+       encap->vni = tunnel_id_to_key32(encap_key->tun_id);
+
+       mutex_lock(&bp->hwrm_cmd_lock);
+       rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+       if (!rc)
+               *encap_record_handle = resp->encap_record_id;
+       else
+               netdev_info(bp->dev, "%s: Error rc=%d", __func__, rc);
+       mutex_unlock(&bp->hwrm_cmd_lock);
+
+       return rc;
 }
 
 static int hwrm_cfa_encap_record_free(struct bnxt *bp,
                                      __le32 encap_record_handle)
 {
-       return 0;
+       struct hwrm_cfa_encap_record_free_input req = { 0 };
+       int rc;
+
+       bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_ENCAP_RECORD_FREE, -1, -1);
+       req.encap_record_id = encap_record_handle;
+
+       rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+       if (rc)
+               netdev_info(bp->dev, "%s: Error rc=%d", __func__, rc);
+       return rc;
 }
 
 static int bnxt_tc_put_l2_node(struct bnxt *bp,