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sys/dev/ena/ena_netmap.c
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| /*- | |||||
| * BSD LICENSE | |||||
| * | |||||
| * Copyright (c) 2015-2019 Amazon.com, Inc. or its affiliates. | |||||
| * 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. | |||||
| * | |||||
| * 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. | |||||
| */ | |||||
| #include <sys/cdefs.h> | |||||
| __FBSDID("$FreeBSD$"); | |||||
| #ifdef DEV_NETMAP | |||||
| #include "ena.h" | |||||
| #include "ena_netmap.h" | |||||
| static int ena_netmap_reg(struct netmap_adapter *, int); | |||||
| static int ena_netmap_txsync(struct netmap_kring *, int); | |||||
| static int ena_netmap_rxsync(struct netmap_kring *, int); | |||||
| int | |||||
| ena_netmap_attach(struct ena_adapter *adapter) | |||||
| { | |||||
| struct netmap_adapter na; | |||||
| ena_trace(ENA_NETMAP, "netmap attach\n"); | |||||
| bzero(&na, sizeof(na)); | |||||
| na.na_flags = NAF_MOREFRAG; | |||||
| na.ifp = adapter->ifp; | |||||
| na.num_tx_desc = adapter->tx_ring_size; | |||||
| na.num_rx_desc = adapter->rx_ring_size; | |||||
| na.num_tx_rings = adapter->num_queues; | |||||
| na.num_rx_rings = adapter->num_queues; | |||||
| na.rx_buf_maxsize = adapter->buf_ring_size; | |||||
| na.nm_txsync = ena_netmap_txsync; | |||||
| na.nm_rxsync = ena_netmap_rxsync; | |||||
| na.nm_register = ena_netmap_reg; | |||||
| return (netmap_attach(&na)); | |||||
| } | |||||
| static int | |||||
| ena_netmap_reg(struct netmap_adapter *na, int onoff) | |||||
| { | |||||
| struct ifnet *ifp = na->ifp; | |||||
| struct ena_adapter* adapter = ifp->if_softc; | |||||
| int rc; | |||||
| sx_xlock(&adapter->ioctl_sx); | |||||
| ENA_FLAG_CLEAR_ATOMIC(ENA_FLAG_TRIGGER_RESET, adapter); | |||||
| ena_down(adapter); | |||||
| if (onoff) { | |||||
| ena_trace(ENA_NETMAP, "netmap on\n"); | |||||
| nm_set_native_flags(na); | |||||
| } else { | |||||
| ena_trace(ENA_NETMAP, "netmap off\n"); | |||||
| nm_clear_native_flags(na); | |||||
| } | |||||
| rc = ena_up(adapter); | |||||
| if (rc != 0) { | |||||
| ena_trace(ENA_WARNING, "ena_up failed with rc=%d\n", rc); | |||||
| adapter->reset_reason = ENA_REGS_RESET_DRIVER_INVALID_STATE; | |||||
| nm_clear_native_flags(na); | |||||
| ena_destroy_device(adapter, false); | |||||
| ENA_FLAG_SET_ATOMIC(ENA_FLAG_DEV_UP_BEFORE_RESET, adapter); | |||||
| rc = ena_restore_device(adapter); | |||||
| } | |||||
| sx_unlock(&adapter->ioctl_sx); | |||||
| return (rc); | |||||
| } | |||||
| static int | |||||
| ena_netmap_txsync(struct netmap_kring *kring, int flags) | |||||
| { | |||||
| ena_trace(ENA_NETMAP, "netmap txsync\n"); | |||||
| return (0); | |||||
| } | |||||
| static int | |||||
| ena_netmap_rxsync(struct netmap_kring *kring, int flags) | |||||
| { | |||||
| ena_trace(ENA_NETMAP, "netmap rxsync\n"); | |||||
| return (0); | |||||
| } | |||||
| #endif /* DEV_NETMAP */ | |||||