/*
* Copyright (c) 2016-2021 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
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*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#include <skywalk/nexus/flowswitch/nx_flowswitch.h>
#include <skywalk/nexus/flowswitch/fsw_var.h>
#include <skywalk/nexus/netif/nx_netif.h>
void
fsw_classq_setup(struct nx_flowswitch *fsw, struct nexus_adapter *hostna)
{
FSW_WLOCK_ASSERT_HELD(fsw);
ASSERT(hostna->na_ifp->if_snd->ifcq_type != PKTSCHEDT_NONE);
ASSERT(hostna->na_ifp->if_eflags & IFEF_TXSTART);
if (hostna->na_type == NA_NETIF_COMPAT_HOST) {
fsw->fsw_classq_enq_ptype = QP_MBUF;
} else {
ASSERT(hostna->na_type == NA_NETIF_HOST);
fsw->fsw_classq_enq_ptype = QP_PACKET;
}
}
void
fsw_classq_teardown(struct nx_flowswitch *fsw, struct nexus_adapter *hostna)
{
#if !(DEVELOPMENT || DEBUG)
#pragma unused(fsw)
#endif
FSW_WLOCK_ASSERT_HELD(fsw);
ASSERT(hostna->na_ifp->if_snd->ifcq_type != PKTSCHEDT_NONE);
ASSERT(hostna->na_ifp->if_eflags & IFEF_TXSTART);
if (hostna->na_type == NA_NETIF_COMPAT_HOST) {
ASSERT(fsw->fsw_classq_enq_ptype == QP_MBUF);
} else {
ASSERT(hostna->na_type == NA_NETIF_HOST);
ASSERT(fsw->fsw_classq_enq_ptype == QP_PACKET);
}
/* flush the interface queues */
if_qflush_snd(hostna->na_ifp, false);
}
struct mbuf *
fsw_classq_kpkt_to_mbuf(struct nx_flowswitch *fsw, struct __kern_packet *pkt)
{
mbuf_ref_t m = NULL;
unsigned int one = 1;
int error;
error = mbuf_allocpacket(MBUF_WAITOK, pkt->pkt_length, &one, &m);
VERIFY(error == 0);
STATS_INC(&fsw->fsw_stats, FSW_STATS_TX_COPY_PKT2MBUF);
if (PACKET_HAS_PARTIAL_CHECKSUM(pkt)) {
STATS_INC(&fsw->fsw_stats, FSW_STATS_TX_COPY_SUM);
}
/* copy packet data */
fsw->fsw_pkt_copy_to_mbuf(NR_TX, SK_PTR_ENCODE(pkt,
METADATA_TYPE(pkt), METADATA_SUBTYPE(pkt)), pkt->pkt_headroom,
m, 0, pkt->pkt_length, PACKET_HAS_PARTIAL_CHECKSUM(pkt),
pkt->pkt_csum_tx_start_off);
_CASSERT(sizeof(m->m_pkthdr.pkt_flowid) ==
sizeof(pkt->pkt_flow_token));
_CASSERT(sizeof(m->m_pkthdr.pkt_mpriv_srcid) ==
sizeof(pkt->pkt_flowsrc_token));
_CASSERT(sizeof(m->m_pkthdr.pkt_mpriv_fidx) ==
sizeof(pkt->pkt_flowsrc_fidx));
_CASSERT(sizeof(m->m_pkthdr.comp_gencnt) ==
sizeof(pkt->pkt_comp_gencnt));
m->m_pkthdr.pkt_flowid = pkt->pkt_flow_token;
m->m_pkthdr.comp_gencnt = pkt->pkt_comp_gencnt;
m->m_pkthdr.pkt_mpriv_srcid = pkt->pkt_flowsrc_token;
m->m_pkthdr.pkt_mpriv_fidx = pkt->pkt_flowsrc_fidx;
SK_DF(SK_VERB_TX | SK_VERB_DUMP, "%s(%d) %s",
sk_proc_name_address(current_proc()), sk_proc_pid(current_proc()),
sk_dump("buf", m_mtod_current(m), m->m_len, 128, NULL, 0));
if (__improbable((error != 0))) {
if (m != NULL) {
m_freem(m);
m = NULL;
}
}
return m;
}