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由 John Fastabend 提交于
Make cls_u32 classifier safe to run without holding lock. This patch converts statistics that are kept in read section u32_classify into per cpu counters. This patch was tested with a tight u32 filter add/delete loop while generating traffic with pktgen. By running pktgen on vlan devices created on top of a physical device we can hit the qdisc layer correctly. For ingress qdisc's a loopback cable was used. for i in {1..100}; do q=`echo $i%8|bc`; echo -n "u32 tos: iteration $i on queue $q"; tc filter add dev p3p2 parent $p prio $i u32 match ip tos 0x10 0xff \ action skbedit queue_mapping $q; sleep 1; tc filter del dev p3p2 prio $i; echo -n "u32 tos hash table: iteration $i on queue $q"; tc filter add dev p3p2 parent $p protocol ip prio $i handle 628: u32 divisor 1 tc filter add dev p3p2 parent $p protocol ip prio $i u32 \ match ip protocol 17 0xff link 628: offset at 0 mask 0xf00 shift 6 plus 0 tc filter add dev p3p2 parent $p protocol ip prio $i u32 \ ht 628:0 match ip tos 0x10 0xff action skbedit queue_mapping $q sleep 2; tc filter del dev p3p2 prio $i sleep 1; done Signed-off-by: NJohn Fastabend <john.r.fastabend@intel.com> Acked-by: NEric Dumazet <edumazet@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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