From: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Date: Wed, 19 Dec 2018 10:03:32 -0800
Subject: ice: Offload SCTP checksum
Patch-mainline: v5.1-rc1
Git-commit: cf909e19acf373a2e1d9bd877846a11bc8e20a54
References: jsc#SLE-4803
This patch adds the ability to offload SCTP checksum calculations to the
NIC.
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/intel/ice/ice.h | 1 +
drivers/net/ethernet/intel/ice/ice_lan_tx_rx.h | 1 +
drivers/net/ethernet/intel/ice/ice_main.c | 1 +
drivers/net/ethernet/intel/ice/ice_txrx.c | 6 ++++++
4 files changed, 9 insertions(+)
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -26,6 +26,7 @@
#include <linux/bitmap.h>
#include <linux/log2.h>
#include <linux/ip.h>
+#include <linux/sctp.h>
#include <linux/ipv6.h>
#include <linux/if_bridge.h>
#include <linux/avf/virtchnl.h>
--- a/drivers/net/ethernet/intel/ice/ice_lan_tx_rx.h
+++ b/drivers/net/ethernet/intel/ice/ice_lan_tx_rx.h
@@ -346,6 +346,7 @@ enum ice_tx_desc_cmd_bits {
ICE_TX_DESC_CMD_IIPT_IPV4 = 0x0040, /* 2 BITS */
ICE_TX_DESC_CMD_IIPT_IPV4_CSUM = 0x0060, /* 2 BITS */
ICE_TX_DESC_CMD_L4T_EOFT_TCP = 0x0100, /* 2 BITS */
+ ICE_TX_DESC_CMD_L4T_EOFT_SCTP = 0x0200, /* 2 BITS */
ICE_TX_DESC_CMD_L4T_EOFT_UDP = 0x0300, /* 2 BITS */
};
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -1528,6 +1528,7 @@ static int ice_cfg_netdev(struct ice_vsi
csumo_features = NETIF_F_RXCSUM |
NETIF_F_IP_CSUM |
+ NETIF_F_SCTP_CRC |
NETIF_F_IPV6_CSUM;
vlano_features = NETIF_F_HW_VLAN_CTAG_FILTER |
--- a/drivers/net/ethernet/intel/ice/ice_txrx.c
+++ b/drivers/net/ethernet/intel/ice/ice_txrx.c
@@ -1465,6 +1465,12 @@ int ice_tx_csum(struct ice_tx_buf *first
offset |= l4_len << ICE_TX_DESC_LEN_L4_LEN_S;
break;
case IPPROTO_SCTP:
+ /* enable SCTP checksum offload */
+ cmd |= ICE_TX_DESC_CMD_L4T_EOFT_SCTP;
+ l4_len = sizeof(struct sctphdr) >> 2;
+ offset |= l4_len << ICE_TX_DESC_LEN_L4_LEN_S;
+ break;
+
default:
if (first->tx_flags & ICE_TX_FLAGS_TSO)
return -1;