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bnxt_en: Pass DCB RoCE app priority to firmware.

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When the driver gets the RoCE app priority set/delete call through DCBNL,
the driver will send the information to the firmware to set up the
priority VLAN tag for RDMA traffic.

[ New version using the common ETH_P_IBOE constant in if_ether.h ]

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2017-04-21 20:11:22 -04:00 committed by David S. Miller
parent 120645513f
commit a82fba8dbf
2 changed files with 108 additions and 1 deletions
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108
drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c
View File

@ -1,6 +1,7 @@
/* Broadcom NetXtreme-C/E network driver.
*
* Copyright (c) 2014-2016 Broadcom Corporation
* Copyright (c) 2016-2017 Broadcom Limited
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -14,6 +15,7 @@
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/etherdevice.h>
#include <rdma/ib_verbs.h>
#include "bnxt_hsi.h"
#include "bnxt.h"
#include "bnxt_dcb.h"
@ -241,6 +243,92 @@ static int bnxt_hwrm_queue_pfc_qcfg(struct bnxt *bp, struct ieee_pfc *pfc)
return 0;
}
static int bnxt_hwrm_set_dcbx_app(struct bnxt *bp, struct dcb_app *app,
bool add)
{
struct hwrm_fw_set_structured_data_input set = {0};
struct hwrm_fw_get_structured_data_input get = {0};
struct hwrm_struct_data_dcbx_app *fw_app;
struct hwrm_struct_hdr *data;
dma_addr_t mapping;
size_t data_len;
int rc, n, i;
if (bp->hwrm_spec_code < 0x10601)
return 0;
n = IEEE_8021QAZ_MAX_TCS;
data_len = sizeof(*data) + sizeof(*fw_app) * n;
data = dma_alloc_coherent(&bp->pdev->dev, data_len, &mapping,
GFP_KERNEL);
if (!data)
return -ENOMEM;
memset(data, 0, data_len);
bnxt_hwrm_cmd_hdr_init(bp, &get, HWRM_FW_GET_STRUCTURED_DATA, -1, -1);
get.dest_data_addr = cpu_to_le64(mapping);
get.structure_id = cpu_to_le16(STRUCT_HDR_STRUCT_ID_DCBX_APP);
get.subtype = cpu_to_le16(HWRM_STRUCT_DATA_SUBTYPE_HOST_OPERATIONAL);
get.count = 0;
rc = hwrm_send_message(bp, &get, sizeof(get), HWRM_CMD_TIMEOUT);
if (rc)
goto set_app_exit;
fw_app = (struct hwrm_struct_data_dcbx_app *)(data + 1);
if (data->struct_id != cpu_to_le16(STRUCT_HDR_STRUCT_ID_DCBX_APP)) {
rc = -ENODEV;
goto set_app_exit;
}
n = data->count;
for (i = 0; i < n; i++, fw_app++) {
if (fw_app->protocol_id == cpu_to_be16(app->protocol) &&
fw_app->protocol_selector == app->selector &&
fw_app->priority == app->priority) {
if (add)
goto set_app_exit;
else
break;
}
}
if (add) {
/* append */
n++;
fw_app->protocol_id = cpu_to_be16(app->protocol);
fw_app->protocol_selector = app->selector;
fw_app->priority = app->priority;
fw_app->valid = 1;
} else {
size_t len = 0;
/* not found, nothing to delete */
if (n == i)
goto set_app_exit;
len = (n - 1 - i) * sizeof(*fw_app);
if (len)
memmove(fw_app, fw_app + 1, len);
n--;
memset(fw_app + n, 0, sizeof(*fw_app));
}
data->count = n;
data->len = cpu_to_le16(sizeof(*fw_app) * n);
data->subtype = cpu_to_le16(HWRM_STRUCT_DATA_SUBTYPE_HOST_OPERATIONAL);
bnxt_hwrm_cmd_hdr_init(bp, &set, HWRM_FW_SET_STRUCTURED_DATA, -1, -1);
set.src_data_addr = cpu_to_le64(mapping);
set.data_len = cpu_to_le16(sizeof(*data) + sizeof(*fw_app) * n);
set.hdr_cnt = 1;
rc = hwrm_send_message(bp, &set, sizeof(set), HWRM_CMD_TIMEOUT);
if (rc)
rc = -EIO;
set_app_exit:
dma_free_coherent(&bp->pdev->dev, data_len, data, mapping);
return rc;
}
static int bnxt_ets_validate(struct bnxt *bp, struct ieee_ets *ets, u8 *tc)
{
int total_ets_bw = 0;
@ -417,6 +505,15 @@ static int bnxt_dcbnl_ieee_setapp(struct net_device *dev, struct dcb_app *app)
return -EINVAL;
rc = dcb_ieee_setapp(dev, app);
if (rc)
return rc;
if ((app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
app->protocol == ETH_P_IBOE) ||
(app->selector == IEEE_8021QAZ_APP_SEL_DGRAM &&
app->protocol == ROCE_V2_UDP_DPORT))
rc = bnxt_hwrm_set_dcbx_app(bp, app, true);
return rc;
}
@ -425,10 +522,19 @@ static int bnxt_dcbnl_ieee_delapp(struct net_device *dev, struct dcb_app *app)
struct bnxt *bp = netdev_priv(dev);
int rc;
if (!(bp->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
if (!(bp->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) ||
!(bp->dcbx_cap & DCB_CAP_DCBX_HOST))
return -EINVAL;
rc = dcb_ieee_delapp(dev, app);
if (rc)
return rc;
if ((app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
app->protocol == ETH_P_IBOE) ||
(app->selector == IEEE_8021QAZ_APP_SEL_DGRAM &&
app->protocol == ROCE_V2_UDP_DPORT))
rc = bnxt_hwrm_set_dcbx_app(bp, app, false);
return rc;
}

1
drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.h
View File

@ -1,6 +1,7 @@
/* Broadcom NetXtreme-C/E network driver.
*
* Copyright (c) 2014-2016 Broadcom Corporation
* Copyright (c) 2016-2017 Broadcom Limited
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by