Differential D10293 Diff 27617 sys/dev/ixgbe/if_fdir.c

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sys/dev/ixgbe/if_fdir.c

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				/******************************************************************************

				Copyright (c) 2001-2017, Intel Corporation
				All rights reserved.

				Redistribution and use in source and binary forms, with or without
				modification, are permitted provided that the following conditions are met:

				1. Redistributions of source code must retain the above copyright notice,
				this list of conditions and the following disclaimer.

				2. Redistributions in binary form must reproduce the above copyright
				notice, this list of conditions and the following disclaimer in the
				documentation and/or other materials provided with the distribution.

				3. Neither the name of the Intel Corporation nor the names of its
				contributors may be used to endorse or promote products derived from
				this software without specific prior written permission.

				THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
				AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
				IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
				ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
				LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
				CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
				SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
				INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
				CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
				ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
				POSSIBILITY OF SUCH DAMAGE.

				******************************************************************************/
				/$FreeBSD$/

				#include "ixgbe.h"

				#ifdef IXGBE_FDIR

				void
				ixgbe_init_fdir(struct adapter *adapter)
				{
				u32 hdrm = 32 << fdir_pballoc;

				if (!(adapter->feat_en & IXGBE_FEATURE_FDIR))
				return;

				adapter->hw.mac.ops.setup_rxpba(&adapter->hw, 0, hdrm,
				PBA_STRATEGY_EQUAL);
				ixgbe_init_fdir_signature_82599(&adapter->hw, fdir_pballoc);
				} /* ixgbe_init_fdir */

				void
				ixgbe_reinit_fdir(void *context)
				{
				if_ctx_t ctx = context;
				struct adapter *adapter = iflib_get_softc(ctx);
				struct ifnet *ifp = iflib_get_ifp(ctx);

				if (!(adapter->feat_en & IXGBE_FEATURE_FDIR))
				return;
				smhUnsubmitted Not Done Inline Actions 0 smh: == 0
				if (adapter->fdir_reinit != 1) /* Shouldn't happen */
				return;
				ixgbe_reinit_fdir_tables_82599(&adapter->hw);
				adapter->fdir_reinit = 0;
				/* re-enable flow director interrupts */
				IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, IXGBE_EIMS_FLOW_DIR);
				/* Restart the interface */
				ifp->if_drv_flags \|= IFF_DRV_RUNNING;
				} /* ixgbe_reinit_fdir */

				/************************************************************************
				* ixgbe_atr
				*
				* Parse packet headers so that Flow Director can make
				* a hashed filter table entry allowing traffic flows
				* to be identified and kept on the same cpu. This
				* would be a performance hit, but we only do it at
				* IXGBE_FDIR_RATE of packets.
				************************************************************************/
				void
				ixgbe_atr(struct tx_ring txr, struct mbuf mp)
				{
				struct adapter *adapter = txr->adapter;
				struct ix_queue *que;
				struct ip *ip;
				struct tcphdr *th;
				struct udphdr *uh;
				struct ether_vlan_header *eh;
				union ixgbe_atr_hash_dword input = {.dword = 0};
				union ixgbe_atr_hash_dword common = {.dword = 0};
				int ehdrlen, ip_hlen;
				u16 etype;

				eh = mtod(mp, struct ether_vlan_header *);
				if (eh->evl_encap_proto == htons(ETHERTYPE_VLAN)) {
				ehdrlen = ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN;
				etype = eh->evl_proto;
				} else {
				ehdrlen = ETHER_HDR_LEN;
				etype = eh->evl_encap_proto;
				}

				/* Only handling IPv4 */
				if (etype != htons(ETHERTYPE_IP))
				return;

				ip = (struct ip *)(mp->m_data + ehdrlen);
				ip_hlen = ip->ip_hl << 2;

				/* check if we're UDP or TCP */
				switch (ip->ip_p) {
				case IPPROTO_TCP:
				th = (struct tcphdr *)((caddr_t)ip + ip_hlen);
				/* src and dst are inverted */
				common.port.dst ^= th->th_sport;
				common.port.src ^= th->th_dport;
				input.formatted.flow_type ^= IXGBE_ATR_FLOW_TYPE_TCPV4;
				break;
				case IPPROTO_UDP:
				uh = (struct udphdr *)((caddr_t)ip + ip_hlen);
				/* src and dst are inverted */
				common.port.dst ^= uh->uh_sport;
				common.port.src ^= uh->uh_dport;
				input.formatted.flow_type ^= IXGBE_ATR_FLOW_TYPE_UDPV4;
				break;
				default:
				return;
				}

				input.formatted.vlan_id = htobe16(mp->m_pkthdr.ether_vtag);
				if (mp->m_pkthdr.ether_vtag)
				common.flex_bytes ^= htons(ETHERTYPE_VLAN);
				else
				common.flex_bytes ^= etype;
				common.ip ^= ip->ip_src.s_addr ^ ip->ip_dst.s_addr;

				que = &adapter->queues[txr->me];
				/*
				* This assumes the Rx queue and Tx
				* queue are bound to the same CPU
				*/
				ixgbe_fdir_add_signature_filter_82599(&adapter->hw,
				input, common, que->msix);
				} /* ixgbe_atr */

				#else

				/* TASK_INIT needs this function defined regardless if it's enabled */
				void
				ixgbe_reinit_fdir(void *context)
				{
				UNREFERENCED_PARAMETER(context);
				} /* ixgbe_reinit_fdir */

				#endif