if_fdir.c revision 1.2
1 /****************************************************************************** 2 3 Copyright (c) 2001-2017, Intel Corporation 4 All rights reserved. 5 6 Redistribution and use in source and binary forms, with or without 7 modification, are permitted provided that the following conditions are met: 8 9 1. Redistributions of source code must retain the above copyright notice, 10 this list of conditions and the following disclaimer. 11 12 2. Redistributions in binary form must reproduce the above copyright 13 notice, this list of conditions and the following disclaimer in the 14 documentation and/or other materials provided with the distribution. 15 16 3. Neither the name of the Intel Corporation nor the names of its 17 contributors may be used to endorse or promote products derived from 18 this software without specific prior written permission. 19 20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 21 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 POSSIBILITY OF SUCH DAMAGE. 31 32 ******************************************************************************/ 33 /*$FreeBSD: head/sys/dev/ixgbe/if_fdir.c 327031 2017-12-20 18:15:06Z erj $*/ 34 35 #include "ixgbe.h" 36 37 #ifdef IXGBE_FDIR 38 39 void 40 ixgbe_init_fdir(struct adapter *adapter) 41 { 42 u32 hdrm = 32 << fdir_pballoc; 43 44 if (!(adapter->feat_en & IXGBE_FEATURE_FDIR)) 45 return; 46 47 adapter->hw.mac.ops.setup_rxpba(&adapter->hw, 0, hdrm, 48 PBA_STRATEGY_EQUAL); 49 ixgbe_init_fdir_signature_82599(&adapter->hw, fdir_pballoc); 50 } /* ixgbe_init_fdir */ 51 52 void 53 ixgbe_reinit_fdir(void *context) 54 { 55 struct adapter *adapter = context; 56 struct ifnet *ifp = adapter->ifp; 57 58 if (!(adapter->feat_en & IXGBE_FEATURE_FDIR)) 59 return; 60 if (adapter->fdir_reinit != 1) /* Shouldn't happen */ 61 return; 62 ixgbe_reinit_fdir_tables_82599(&adapter->hw); 63 adapter->fdir_reinit = 0; 64 /* re-enable flow director interrupts */ 65 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, IXGBE_EIMS_FLOW_DIR); 66 /* Restart the interface */ 67 ifp->if_drv_flags |= IFF_DRV_RUNNING; 68 } /* ixgbe_reinit_fdir */ 69 70 /************************************************************************ 71 * ixgbe_atr 72 * 73 * Parse packet headers so that Flow Director can make 74 * a hashed filter table entry allowing traffic flows 75 * to be identified and kept on the same cpu. This 76 * would be a performance hit, but we only do it at 77 * IXGBE_FDIR_RATE of packets. 78 ************************************************************************/ 79 void 80 ixgbe_atr(struct tx_ring *txr, struct mbuf *mp) 81 { 82 struct adapter *adapter = txr->adapter; 83 struct ix_queue *que; 84 struct ip *ip; 85 struct tcphdr *th; 86 struct udphdr *uh; 87 struct ether_vlan_header *eh; 88 union ixgbe_atr_hash_dword input = {.dword = 0}; 89 union ixgbe_atr_hash_dword common = {.dword = 0}; 90 int ehdrlen, ip_hlen; 91 u16 etype; 92 93 eh = mtod(mp, struct ether_vlan_header *); 94 if (eh->evl_encap_proto == htons(ETHERTYPE_VLAN)) { 95 ehdrlen = ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN; 96 etype = eh->evl_proto; 97 } else { 98 ehdrlen = ETHER_HDR_LEN; 99 etype = eh->evl_encap_proto; 100 } 101 102 /* Only handling IPv4 */ 103 if (etype != htons(ETHERTYPE_IP)) 104 return; 105 106 ip = (struct ip *)(mp->m_data + ehdrlen); 107 ip_hlen = ip->ip_hl << 2; 108 109 /* check if we're UDP or TCP */ 110 switch (ip->ip_p) { 111 case IPPROTO_TCP: 112 th = (struct tcphdr *)((caddr_t)ip + ip_hlen); 113 /* src and dst are inverted */ 114 common.port.dst ^= th->th_sport; 115 common.port.src ^= th->th_dport; 116 input.formatted.flow_type ^= IXGBE_ATR_FLOW_TYPE_TCPV4; 117 break; 118 case IPPROTO_UDP: 119 uh = (struct udphdr *)((caddr_t)ip + ip_hlen); 120 /* src and dst are inverted */ 121 common.port.dst ^= uh->uh_sport; 122 common.port.src ^= uh->uh_dport; 123 input.formatted.flow_type ^= IXGBE_ATR_FLOW_TYPE_UDPV4; 124 break; 125 default: 126 return; 127 } 128 129 input.formatted.vlan_id = htobe16(mp->m_pkthdr.ether_vtag); 130 if (mp->m_pkthdr.ether_vtag) 131 common.flex_bytes ^= htons(ETHERTYPE_VLAN); 132 else 133 common.flex_bytes ^= etype; 134 common.ip ^= ip->ip_src.s_addr ^ ip->ip_dst.s_addr; 135 136 que = &adapter->queues[txr->me]; 137 /* 138 * This assumes the Rx queue and Tx 139 * queue are bound to the same CPU 140 */ 141 ixgbe_fdir_add_signature_filter_82599(&adapter->hw, 142 input, common, que->msix); 143 } /* ixgbe_atr */ 144 145 #else 146 147 /* TASK_INIT needs this function defined regardless if it's enabled */ 148 void 149 ixgbe_reinit_fdir(void *context) 150 { 151 UNREFERENCED_1PARAMETER(context); 152 } /* ixgbe_reinit_fdir */ 153 154 void 155 ixgbe_atr(struct tx_ring *txr, struct mbuf *mp) 156 { 157 UNREFERENCED_2PARAMETER(txr, mp); 158 } /* ixgbe_atr */ 159 160 #endif 161
Indexes created Sun Sep 28 12:09:53 GMT 2025