d893184748
Add support for offloading u32 filter onto hardware. Links are stored in a jump table to perform necessary jumps to match TCP/UDP header. When inserting rules in the linked bucket, the TCP/UDP match fields in the corresponding entry of the jump table are appended to the filter rule before insertion. If a link is deleted, then all corresponding filters associated with the link are also deleted. Also enable hardware tc offload as a supported feature. Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
58 lines
2.1 KiB
C
58 lines
2.1 KiB
C
/*
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* This file is part of the Chelsio T4 Ethernet driver for Linux.
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*
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* Copyright (c) 2016 Chelsio Communications, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef __CXGB4_TC_U32_H
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#define __CXGB4_TC_U32_H
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#include <net/pkt_cls.h>
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#define CXGB4_MAX_LINK_HANDLE 32
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static inline bool can_tc_u32_offload(struct net_device *dev)
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{
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struct adapter *adap = netdev2adap(dev);
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return (dev->features & NETIF_F_HW_TC) && adap->tc_u32 ? true : false;
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}
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int cxgb4_config_knode(struct net_device *dev, __be16 protocol,
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struct tc_cls_u32_offload *cls);
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int cxgb4_delete_knode(struct net_device *dev, __be16 protocol,
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struct tc_cls_u32_offload *cls);
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void cxgb4_cleanup_tc_u32(struct adapter *adapter);
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struct cxgb4_tc_u32_table *cxgb4_init_tc_u32(struct adapter *adap,
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unsigned int size);
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#endif /* __CXGB4_TC_U32_H */
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