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 /*$FreeBSD$*/ 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 if_ctx_t ctx = context; 56 struct adapter *adapter = iflib_get_softc(ctx); 57 struct ifnet *ifp = iflib_get_ifp(ctx); 58 59 if (!(adapter->feat_en & IXGBE_FEATURE_FDIR)) 60 return; 61 if (adapter->fdir_reinit != 1) /* Shouldn't happen */ 62 return; 63 ixgbe_reinit_fdir_tables_82599(&adapter->hw); 64 adapter->fdir_reinit = 0; 65 /* re-enable flow director interrupts */ 66 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, IXGBE_EIMS_FLOW_DIR); 67 /* Restart the interface */ 68 ifp->if_drv_flags |= IFF_DRV_RUNNING; 69 } /* ixgbe_reinit_fdir */ 70 71 /************************************************************************ 72 * ixgbe_atr 73 * 74 * Parse packet headers so that Flow Director can make 75 * a hashed filter table entry allowing traffic flows 76 * to be identified and kept on the same cpu. This 77 * would be a performance hit, but we only do it at 78 * IXGBE_FDIR_RATE of packets. 79 ************************************************************************/ 80 void 81 ixgbe_atr(struct tx_ring *txr, struct mbuf *mp) 82 { 83 struct adapter *adapter = txr->adapter; 84 struct ix_queue *que; 85 struct ip *ip; 86 struct tcphdr *th; 87 struct udphdr *uh; 88 struct ether_vlan_header *eh; 89 union ixgbe_atr_hash_dword input = {.dword = 0}; 90 union ixgbe_atr_hash_dword common = {.dword = 0}; 91 int ehdrlen, ip_hlen; 92 u16 etype; 93 94 eh = mtod(mp, struct ether_vlan_header *); 95 if (eh->evl_encap_proto == htons(ETHERTYPE_VLAN)) { 96 ehdrlen = ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN; 97 etype = eh->evl_proto; 98 } else { 99 ehdrlen = ETHER_HDR_LEN; 100 etype = eh->evl_encap_proto; 101 } 102 103 /* Only handling IPv4 */ 104 if (etype != htons(ETHERTYPE_IP)) 105 return; 106 107 ip = (struct ip *)(mp->m_data + ehdrlen); 108 ip_hlen = ip->ip_hl << 2; 109 110 /* check if we're UDP or TCP */ 111 switch (ip->ip_p) { 112 case IPPROTO_TCP: 113 th = (struct tcphdr *)((caddr_t)ip + ip_hlen); 114 /* src and dst are inverted */ 115 common.port.dst ^= th->th_sport; 116 common.port.src ^= th->th_dport; 117 input.formatted.flow_type ^= IXGBE_ATR_FLOW_TYPE_TCPV4; 118 break; 119 case IPPROTO_UDP: 120 uh = (struct udphdr *)((caddr_t)ip + ip_hlen); 121 /* src and dst are inverted */ 122 common.port.dst ^= uh->uh_sport; 123 common.port.src ^= uh->uh_dport; 124 input.formatted.flow_type ^= IXGBE_ATR_FLOW_TYPE_UDPV4; 125 break; 126 default: 127 return; 128 } 129 130 input.formatted.vlan_id = htobe16(mp->m_pkthdr.ether_vtag); 131 if (mp->m_pkthdr.ether_vtag) 132 common.flex_bytes ^= htons(ETHERTYPE_VLAN); 133 else 134 common.flex_bytes ^= etype; 135 common.ip ^= ip->ip_src.s_addr ^ ip->ip_dst.s_addr; 136 137 que = &adapter->queues[txr->me]; 138 /* 139 * This assumes the Rx queue and Tx 140 * queue are bound to the same CPU 141 */ 142 ixgbe_fdir_add_signature_filter_82599(&adapter->hw, 143 input, common, que->msix); 144 } /* ixgbe_atr */ 145 146 #else 147 148 /* TASK_INIT needs this function defined regardless if it's enabled */ 149 void 150 ixgbe_reinit_fdir(void *context) 151 { 152 UNREFERENCED_PARAMETER(context); 153 } /* ixgbe_reinit_fdir */ 154 155 void 156 ixgbe_atr(struct tx_ring *txr, struct mbuf *mp) 157 { 158 UNREFERENCED_2PARAMETER(txr, mp); 159 } /* ixgbe_atr */ 160 161 #endif 162