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d47230a348
The following patch will add two more maximum MDB allowances to the global one, mcast_hash_max, that exists today. In all these cases, attempts to add MDB entries above the configured maximums through netlink, fail noisily and obviously. Such visibility is missing when adding entries through the control plane traffic, by IGMP or MLD packets. To improve visibility in those cases, add a trace point that reports the violation, including the relevant netdevice (be it a slave or the bridge itself), and the MDB entry parameters: # perf record -e bridge:br_mdb_full & # [...] # perf script | cut -d: -f4- dev v2 af 2 src ::ffff:0.0.0.0 grp ::ffff:239.1.1.112/00:00:00:00:00:00 vid 0 dev v2 af 10 src :: grp ff0e::112/00:00:00:00:00:00 vid 0 dev v2 af 2 src ::ffff:0.0.0.0 grp ::ffff:239.1.1.112/00:00:00:00:00:00 vid 10 dev v2 af 10 src 2001:db8:1::1 grp ff0e::1/00:00:00:00:00:00 vid 10 dev v2 af 2 src ::ffff:192.0.2.1 grp ::ffff:239.1.1.1/00:00:00:00:00:00 vid 10 CC: Steven Rostedt <rostedt@goodmis.org> CC: linux-trace-kernel@vger.kernel.org Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Acked-by: Nikolay Aleksandrov <razor@blackwall.org> Signed-off-by: David S. Miller <davem@davemloft.net>
66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* consolidates trace point definitions
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*
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* Copyright (C) 2009 Neil Horman <nhorman@tuxdriver.com>
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*/
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/string.h>
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#include <linux/if_arp.h>
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#include <linux/inetdevice.h>
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#include <linux/inet.h>
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#include <linux/interrupt.h>
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#include <linux/export.h>
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#include <linux/netpoll.h>
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#include <linux/sched.h>
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#include <linux/delay.h>
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#include <linux/rcupdate.h>
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#include <linux/types.h>
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#include <linux/workqueue.h>
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#include <linux/netlink.h>
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#include <linux/net_dropmon.h>
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#include <linux/slab.h>
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#include <asm/unaligned.h>
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#include <asm/bitops.h>
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#define CREATE_TRACE_POINTS
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#include <trace/events/skb.h>
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#include <trace/events/net.h>
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#include <trace/events/napi.h>
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#include <trace/events/sock.h>
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#include <trace/events/udp.h>
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#include <trace/events/tcp.h>
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#include <trace/events/fib.h>
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#include <trace/events/qdisc.h>
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#if IS_ENABLED(CONFIG_BRIDGE)
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#include <trace/events/bridge.h>
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EXPORT_TRACEPOINT_SYMBOL_GPL(br_fdb_add);
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EXPORT_TRACEPOINT_SYMBOL_GPL(br_fdb_external_learn_add);
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EXPORT_TRACEPOINT_SYMBOL_GPL(fdb_delete);
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EXPORT_TRACEPOINT_SYMBOL_GPL(br_fdb_update);
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EXPORT_TRACEPOINT_SYMBOL_GPL(br_mdb_full);
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#endif
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#if IS_ENABLED(CONFIG_PAGE_POOL)
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#include <trace/events/page_pool.h>
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#endif
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#include <trace/events/neigh.h>
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EXPORT_TRACEPOINT_SYMBOL_GPL(neigh_update);
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EXPORT_TRACEPOINT_SYMBOL_GPL(neigh_update_done);
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EXPORT_TRACEPOINT_SYMBOL_GPL(neigh_timer_handler);
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EXPORT_TRACEPOINT_SYMBOL_GPL(neigh_event_send_done);
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EXPORT_TRACEPOINT_SYMBOL_GPL(neigh_event_send_dead);
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EXPORT_TRACEPOINT_SYMBOL_GPL(neigh_cleanup_and_release);
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EXPORT_TRACEPOINT_SYMBOL_GPL(kfree_skb);
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EXPORT_TRACEPOINT_SYMBOL_GPL(napi_poll);
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EXPORT_TRACEPOINT_SYMBOL_GPL(tcp_send_reset);
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EXPORT_TRACEPOINT_SYMBOL_GPL(tcp_bad_csum);
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EXPORT_TRACEPOINT_SYMBOL_GPL(sk_data_ready);
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