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Commit 39d8ba2e authored by Michael Chan's avatar Michael Chan Committed by David S. Miller
Browse files

bnxt_en: Implement ndo_bridge_{get|set}link methods. 



To allow users to set the hardware bridging mode to VEB or VEPA.  Only
single function PF can change the bridging mode.

Signed-off-by: default avatarMichael Chan <michael.chan@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 32e8239c

drivers/net/ethernet/broadcom/bnxt/bnxt.c

+67 −0
Original line number Diff line number Diff line
@@ -4919,6 +4919,26 @@ static void bnxt_hwrm_resource_free(struct bnxt *bp, bool close_path, 
	}

}



static int bnxt_hwrm_set_br_mode(struct bnxt *bp, u16 br_mode)

{

	struct hwrm_func_cfg_input req = {0};

	int rc;



	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);

	req.fid = cpu_to_le16(0xffff);

	req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_EVB_MODE);

	if (br_mode == BRIDGE_MODE_VEB)

		req.evb_mode = FUNC_CFG_REQ_EVB_MODE_VEB;

	else if (br_mode == BRIDGE_MODE_VEPA)

		req.evb_mode = FUNC_CFG_REQ_EVB_MODE_VEPA;

	else

		return -EINVAL;

	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);

	if (rc)

		rc = -EIO;

	return rc;

}



static int bnxt_setup_vnic(struct bnxt *bp, u16 vnic_id)

{

	struct bnxt_vnic_info *vnic = &bp->vnic_info[vnic_id];
@@ -7432,6 +7452,51 @@ static void bnxt_udp_tunnel_del(struct net_device *dev, 
	schedule_work(&bp->sp_task);

}



static int bnxt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,

			       struct net_device *dev, u32 filter_mask,

			       int nlflags)

{

	struct bnxt *bp = netdev_priv(dev);



	return ndo_dflt_bridge_getlink(skb, pid, seq, dev, bp->br_mode, 0, 0,

				       nlflags, filter_mask, NULL);

}



static int bnxt_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh,

			       u16 flags)

{

	struct bnxt *bp = netdev_priv(dev);

	struct nlattr *attr, *br_spec;

	int rem, rc = 0;



	if (bp->hwrm_spec_code < 0x10708 || !BNXT_SINGLE_PF(bp))

		return -EOPNOTSUPP;



	br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);

	if (!br_spec)

		return -EINVAL;



	nla_for_each_nested(attr, br_spec, rem) {

		u16 mode;



		if (nla_type(attr) != IFLA_BRIDGE_MODE)

			continue;



		if (nla_len(attr) < sizeof(mode))

			return -EINVAL;



		mode = nla_get_u16(attr);

		if (mode == bp->br_mode)

			break;



		rc = bnxt_hwrm_set_br_mode(bp, mode);

		if (!rc)

			bp->br_mode = mode;

		break;

	}

	return rc;

}



static const struct net_device_ops bnxt_netdev_ops = {

	.ndo_open		= bnxt_open,

	.ndo_start_xmit		= bnxt_start_xmit,
@@ -7463,6 +7528,8 @@ static const struct net_device_ops bnxt_netdev_ops = { 
	.ndo_udp_tunnel_add	= bnxt_udp_tunnel_add,

	.ndo_udp_tunnel_del	= bnxt_udp_tunnel_del,

	.ndo_xdp		= bnxt_xdp,

	.ndo_bridge_getlink	= bnxt_bridge_getlink,

	.ndo_bridge_setlink	= bnxt_bridge_setlink,

};



static void bnxt_remove_one(struct pci_dev *pdev)