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nvethernet: enable GPSLCE

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Enable Gaint Packet Size Limit Control when
MTU size is greater than 9000

Bug 200561709

Change-Id: Ied21e03e0cc5dddd9a2a8d47ffbaccd542937fb5
Signed-off-by: narayanr <narayanr@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2303740
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: Bhadram Varka <vbhadram@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Srinivas Ramachandran <srinivasra@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
narayanr
2020-02-27 14:25:27 +05:30
committed by Revanth Kumar Uppala
parent 405a6ed9ed
commit 9980e3e524
2 changed files with 13 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/net/ethernet/nvidia/nvethernet/ether_linux.c
View File

@@ -2259,6 +2259,13 @@ static int ether_change_mtu(struct net_device *ndev, int new_mtu)
return -EBUSY; return -EBUSY;
} }
if (new_mtu > OSI_MTU_SIZE_9000 && osi_dma->num_dma_chans != 1U) {
netdev_err(pdata->ndev,
"MTU greater than %d is valid only in single channel configuration\n"
, OSI_MTU_SIZE_9000);
return -EINVAL;
}
ndev->mtu = new_mtu; ndev->mtu = new_mtu;
osi_core->mtu = new_mtu; osi_core->mtu = new_mtu;
osi_dma->mtu = new_mtu; osi_dma->mtu = new_mtu;
@@ -3383,14 +3390,14 @@ static int ether_parse_dt(struct ether_priv_data *pdata)
&pdata->max_platform_mtu); &pdata->max_platform_mtu);
if (ret < 0) { if (ret < 0) {
dev_info(dev, "max-platform-mtu DT entry missing, setting default %d\n", dev_info(dev, "max-platform-mtu DT entry missing, setting default %d\n",
ETHER_DEFAULT_PLATFORM_MTU); OSI_DFLT_MTU_SIZE);
pdata->max_platform_mtu = ETHER_DEFAULT_PLATFORM_MTU; pdata->max_platform_mtu = OSI_DFLT_MTU_SIZE;
} else { } else {
if (pdata->max_platform_mtu > ETHER_MAX_HW_MTU || if (pdata->max_platform_mtu > OSI_MAX_MTU_SIZE ||
pdata->max_platform_mtu < ETH_MIN_MTU) { pdata->max_platform_mtu < ETH_MIN_MTU) {
dev_info(dev, "Invalid max-platform-mtu, setting default %d\n", dev_info(dev, "Invalid max-platform-mtu, setting default %d\n",
ETHER_DEFAULT_PLATFORM_MTU); OSI_DFLT_MTU_SIZE);
pdata->max_platform_mtu = ETHER_DEFAULT_PLATFORM_MTU; pdata->max_platform_mtu = OSI_DFLT_MTU_SIZE;
} }
} }

11
drivers/net/ethernet/nvidia/nvethernet/ether_linux.h
View File

@@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2018-2019, NVIDIA CORPORATION. All rights reserved. * Copyright (c) 2018-2020, NVIDIA CORPORATION. All rights reserved.
* *
* This program is free software; you can redistribute it and/or modify it * This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License, * under the terms and conditions of the GNU General Public License,
@@ -111,15 +111,6 @@
#define HW_HASH_TBL_SZ_0 0 #define HW_HASH_TBL_SZ_0 0
/** @} */ /** @} */
/**
* @brief Ethernet Maximum HW MTU
*/
#define ETHER_MAX_HW_MTU 9000U
/**
* @brief Ethernet default platform supported MTU
*/
#define ETHER_DEFAULT_PLATFORM_MTU 1500U
/** /**
* @brief Maximum buffer length per DMA descriptor (16KB). * @brief Maximum buffer length per DMA descriptor (16KB).
*/ */