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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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8c95f773b4
This patch adds IPv4 vxlan encap/decap action support to TC-flower offload. For vxlan encap, the driver maintains a tunnel encap hash-table. When a new flow with a tunnel encap action arrives, this table is looked up; if an encap entry exists, it uses the already programmed encap_record_handle as the tunnel_handle in the hwrm_cfa_flow_alloc cmd. Else, a new encap node is added and the L2 header fields are queried via a route lookup. hwrm_cfa_encap_record_alloc cmd is used to create a new encap record and the encap_record_handle is used as the tunnel_handle while adding the flow. For vxlan decap, the driver maintains a tunnel decap hash-table. When a new flow with a tunnel decap action arrives, this table is looked up; if a decap entry exists, it uses the already programmed decap_filter_handle as the tunnel_handle in the hwrm_cfa_flow_alloc cmd. Else, a new decap node is added and a decap_filter_handle is alloc'd via the hwrm_cfa_decap_filter_alloc cmd. This handle is used as the tunnel_handle while adding the flow. The code to issue the HWRM FW cmds is introduced in a follow-up patch. 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>
66 lines
1.4 KiB
C
66 lines
1.4 KiB
C
/* Broadcom NetXtreme-C/E network driver.
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*
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* Copyright (c) 2017 Broadcom Limited
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation.
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*/
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#include <linux/pci.h>
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#include <linux/netdevice.h>
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#include "bnxt_hsi.h"
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#include "bnxt.h"
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#include "bnxt_vfr.h"
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#include "bnxt_devlink.h"
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static const struct devlink_ops bnxt_dl_ops = {
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#ifdef CONFIG_BNXT_SRIOV
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.eswitch_mode_set = bnxt_dl_eswitch_mode_set,
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.eswitch_mode_get = bnxt_dl_eswitch_mode_get,
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#endif /* CONFIG_BNXT_SRIOV */
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};
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int bnxt_dl_register(struct bnxt *bp)
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{
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struct devlink *dl;
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int rc;
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if (!pci_find_ext_capability(bp->pdev, PCI_EXT_CAP_ID_SRIOV))
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return 0;
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if (bp->hwrm_spec_code < 0x10803) {
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netdev_warn(bp->dev, "Firmware does not support SR-IOV E-Switch SWITCHDEV mode.\n");
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return -ENOTSUPP;
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}
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dl = devlink_alloc(&bnxt_dl_ops, sizeof(struct bnxt_dl));
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if (!dl) {
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netdev_warn(bp->dev, "devlink_alloc failed");
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return -ENOMEM;
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}
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bnxt_link_bp_to_dl(bp, dl);
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bp->eswitch_mode = DEVLINK_ESWITCH_MODE_LEGACY;
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rc = devlink_register(dl, &bp->pdev->dev);
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if (rc) {
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bnxt_link_bp_to_dl(bp, NULL);
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devlink_free(dl);
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netdev_warn(bp->dev, "devlink_register failed. rc=%d", rc);
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return rc;
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}
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return 0;
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}
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void bnxt_dl_unregister(struct bnxt *bp)
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{
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struct devlink *dl = bp->dl;
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if (!dl)
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return;
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devlink_unregister(dl);
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devlink_free(dl);
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}
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