1cdaaf5405
Adds support to set filters with multiple header fields (L3,L4)to match on.
This is achieved in the following order:
1. Create a leaf hash table for the next header.
2. Create a link to the leaf hash table from the base hash table with
matches on next header type and current header fields.
3. Add filter in leaf hash table with match on next header fields and
action.
Verified with the following filters :
Match TCP and DIP:
handle 1: u32 divisor 1
u32 ht 800: order 1 link 1: \
offset at 0 mask 0f00 shift 6 plus 0 eat \
match ip protocol 6 ff match ip dst 10.0.0.1/32
match tcp src 28 ffff action drop
Delete the filter:
Match on DIP, SIP, UDP (SPort, DPort):
handle 2: u32 divisor 1
u32 ht 800: order 2 link 2: \
offset at 0 mask 0f00 shift 6 plus 0 eat \
match ip dst 15.0.0.2/32 match ip protocol 17 ff \
match ip src 15.0.0.1/32
match udp src 30 ffff match udp dst 32 ffff action drop
Signed-off-by: Amritha Nambiar <amritha.nambiar@intel.com>
Acked-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
118 lines
3.4 KiB
C
118 lines
3.4 KiB
C
/*******************************************************************************
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*
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* Intel 10 Gigabit PCI Express Linux drive
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* Copyright(c) 2016 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* The full GNU General Public License is included in this distribution in
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* the file called "COPYING".
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*
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* Contact Information:
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* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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******************************************************************************/
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#ifndef _IXGBE_MODEL_H_
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#define _IXGBE_MODEL_H_
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#include "ixgbe.h"
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#include "ixgbe_type.h"
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struct ixgbe_mat_field {
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unsigned int off;
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int (*val)(struct ixgbe_fdir_filter *input,
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union ixgbe_atr_input *mask,
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u32 val, u32 m);
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unsigned int type;
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};
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struct ixgbe_jump_table {
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struct ixgbe_mat_field *mat;
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struct ixgbe_fdir_filter *input;
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union ixgbe_atr_input *mask;
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};
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static inline int ixgbe_mat_prgm_sip(struct ixgbe_fdir_filter *input,
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union ixgbe_atr_input *mask,
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u32 val, u32 m)
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{
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input->filter.formatted.src_ip[0] = val;
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mask->formatted.src_ip[0] = m;
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return 0;
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}
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static inline int ixgbe_mat_prgm_dip(struct ixgbe_fdir_filter *input,
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union ixgbe_atr_input *mask,
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u32 val, u32 m)
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{
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input->filter.formatted.dst_ip[0] = val;
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mask->formatted.dst_ip[0] = m;
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return 0;
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}
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static struct ixgbe_mat_field ixgbe_ipv4_fields[] = {
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{ .off = 12, .val = ixgbe_mat_prgm_sip,
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.type = IXGBE_ATR_FLOW_TYPE_IPV4},
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{ .off = 16, .val = ixgbe_mat_prgm_dip,
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.type = IXGBE_ATR_FLOW_TYPE_IPV4},
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{ .val = NULL } /* terminal node */
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};
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static inline int ixgbe_mat_prgm_ports(struct ixgbe_fdir_filter *input,
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union ixgbe_atr_input *mask,
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u32 val, u32 m)
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{
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input->filter.formatted.src_port = val & 0xffff;
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mask->formatted.src_port = m & 0xffff;
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input->filter.formatted.dst_port = val >> 16;
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mask->formatted.dst_port = m >> 16;
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return 0;
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};
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static struct ixgbe_mat_field ixgbe_tcp_fields[] = {
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{.off = 0, .val = ixgbe_mat_prgm_ports,
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.type = IXGBE_ATR_FLOW_TYPE_TCPV4},
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{ .val = NULL } /* terminal node */
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};
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static struct ixgbe_mat_field ixgbe_udp_fields[] = {
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{.off = 0, .val = ixgbe_mat_prgm_ports,
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.type = IXGBE_ATR_FLOW_TYPE_UDPV4},
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{ .val = NULL } /* terminal node */
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};
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struct ixgbe_nexthdr {
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/* offset, shift, and mask of position to next header */
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unsigned int o;
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u32 s;
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u32 m;
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/* match criteria to make this jump*/
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unsigned int off;
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u32 val;
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u32 mask;
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/* location of jump to make */
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struct ixgbe_mat_field *jump;
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};
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static struct ixgbe_nexthdr ixgbe_ipv4_jumps[] = {
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{ .o = 0, .s = 6, .m = 0xf,
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.off = 8, .val = 0x600, .mask = 0xff00, .jump = ixgbe_tcp_fields},
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{ .o = 0, .s = 6, .m = 0xf,
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.off = 8, .val = 0x1100, .mask = 0xff00, .jump = ixgbe_udp_fields},
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{ .jump = NULL } /* terminal node */
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};
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#endif /* _IXGBE_MODEL_H_ */
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