a108d2d6c6
This showed up when doing heavy UDP throughput on SMP machines.
The problem with this is because the 802.11 sequence number is being
allocated separately to the CCMP PN replay number (which is assigned
during ieee80211_crypto_encap()).
Under significant throughput (200+ MBps) the TX path would be stressed
enough that frame TX/retry would force sequence number and PN allocation
to be out of order. So once the frames were reordered via 802.11 seqnos,
the CCMP PN would be far out of order, causing most frames to be discarded
by the receiver.
I've fixed this in some local work by being forced to:
(a) deal with the issues that lead to the parallel TX causing out of
order sequence numbers in the first place;
(b) fix all the packet queuing issues which lead to strange (but mostly
valid) TX.
I'll begin fixing these in a subsequent commit or five.
PR: kern/166190
168 lines
5.2 KiB
C
168 lines
5.2 KiB
C
/*-
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* Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
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* redistribution must be conditioned upon including a substantially
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* similar Disclaimer requirement for further binary redistribution.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_inet.h"
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#include "opt_ath.h"
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#include "opt_wlan.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/sysctl.h>
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#include <sys/mbuf.h>
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#include <sys/malloc.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/errno.h>
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#include <sys/callout.h>
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#include <sys/bus.h>
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#include <sys/endian.h>
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#include <sys/kthread.h>
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#include <sys/taskqueue.h>
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#include <sys/priv.h>
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#include <machine/bus.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_media.h>
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#include <net/if_types.h>
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#include <net/if_arp.h>
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#include <net/ethernet.h>
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#include <net/if_llc.h>
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#include <net80211/ieee80211_var.h>
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#include <net80211/ieee80211_regdomain.h>
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#ifdef IEEE80211_SUPPORT_SUPERG
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#include <net80211/ieee80211_superg.h>
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#endif
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#ifdef IEEE80211_SUPPORT_TDMA
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#include <net80211/ieee80211_tdma.h>
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#endif
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#include <net/bpf.h>
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/if_ether.h>
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#endif
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#include <dev/ath/if_athvar.h>
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#include <dev/ath/ath_hal/ah_devid.h> /* XXX for softled */
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#include <dev/ath/ath_hal/ah_diagcodes.h>
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#ifdef ATH_TX99_DIAG
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#include <dev/ath/ath_tx99/ath_tx99.h>
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#endif
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#ifdef ATH_DEBUG
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#include <dev/ath/if_ath_debug.h>
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uint64_t ath_debug = 0;
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SYSCTL_DECL(_hw_ath);
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SYSCTL_QUAD(_hw_ath, OID_AUTO, debug, CTLFLAG_RW, &ath_debug,
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0, "control debugging printfs");
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TUNABLE_QUAD("hw.ath.debug", &ath_debug);
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void
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ath_printrxbuf(struct ath_softc *sc, const struct ath_buf *bf,
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u_int ix, int done)
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{
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const struct ath_rx_status *rs = &bf->bf_status.ds_rxstat;
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struct ath_hal *ah = sc->sc_ah;
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const struct ath_desc *ds;
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int i;
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for (i = 0, ds = bf->bf_desc; i < bf->bf_nseg; i++, ds++) {
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printf("R[%2u] (DS.V:%p DS.P:%p) L:%08x D:%08x%s\n"
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" %08x %08x %08x %08x\n",
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ix, ds, (const struct ath_desc *)bf->bf_daddr + i,
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ds->ds_link, ds->ds_data,
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!done ? "" : (rs->rs_status == 0) ? " *" : " !",
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ds->ds_ctl0, ds->ds_ctl1,
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ds->ds_hw[0], ds->ds_hw[1]);
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if (ah->ah_magic == 0x20065416) {
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printf(" %08x %08x %08x %08x %08x %08x %08x\n",
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ds->ds_hw[2], ds->ds_hw[3], ds->ds_hw[4],
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ds->ds_hw[5], ds->ds_hw[6], ds->ds_hw[7],
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ds->ds_hw[8]);
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}
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}
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}
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void
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ath_printtxbuf(struct ath_softc *sc, const struct ath_buf *first_bf,
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u_int qnum, u_int ix, int done)
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{
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const struct ath_tx_status *ts = &first_bf->bf_last->bf_status.ds_txstat;
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const struct ath_buf *bf = first_bf;
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struct ath_hal *ah = sc->sc_ah;
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const struct ath_desc *ds;
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int i;
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printf("Q%u[%3u]", qnum, ix);
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while (bf != NULL) {
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for (i = 0, ds = bf->bf_desc; i < bf->bf_nseg; i++, ds++) {
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printf(" (DS.V:%p DS.P:%p) L:%08x D:%08x F:%04x%s\n",
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ds, (const struct ath_desc *)bf->bf_daddr + i,
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ds->ds_link, ds->ds_data, bf->bf_state.bfs_txflags,
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!done ? "" : (ts->ts_status == 0) ? " *" : " !");
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printf(" Seq: %d swtry: %d ADDBAW?: %d DOBAW?: %d\n",
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bf->bf_state.bfs_seqno,
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bf->bf_state.bfs_retries,
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bf->bf_state.bfs_addedbaw,
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bf->bf_state.bfs_dobaw);
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printf(" %08x %08x %08x %08x %08x %08x\n",
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ds->ds_ctl0, ds->ds_ctl1,
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ds->ds_hw[0], ds->ds_hw[1],
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ds->ds_hw[2], ds->ds_hw[3]);
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if (ah->ah_magic == 0x20065416) {
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printf(" %08x %08x %08x %08x %08x %08x %08x %08x\n",
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ds->ds_hw[4], ds->ds_hw[5], ds->ds_hw[6],
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ds->ds_hw[7], ds->ds_hw[8], ds->ds_hw[9],
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ds->ds_hw[10],ds->ds_hw[11]);
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printf(" %08x %08x %08x %08x %08x %08x %08x %08x\n",
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ds->ds_hw[12],ds->ds_hw[13],ds->ds_hw[14],
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ds->ds_hw[15],ds->ds_hw[16],ds->ds_hw[17],
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ds->ds_hw[18], ds->ds_hw[19]);
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}
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}
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printf(" [end]\n");
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bf = bf->bf_next;
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}
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}
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#endif /* ATH_DEBUG */
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