gdb ovs
dpif_netdev_run && pmd_thread_main （没有启动虚拟机去连接 -chardev socket,id=char1,path=$VHOST_SOCK_DIR/vhost-user1，不会有pmd_thread_main）
执行ovs-vsctl add-port br0 vhost-user1 -- set Interface vhost-user1 type=dpdkvhostuser 会触发pmd_thread_main
[root@localhost ovs]# ovs-vsctl show c013fe69-c1a7-40dd-833b-bef8cd04d43e Bridge br0 datapath_type: netdev Port br0 Interface br0 type: internal Port dpdk1 Interface dpdk1 type: dpdk options: {dpdk-devargs="0000:05:00.0"} [root@localhost ovs]#
删除端口
if (!netdev_is_pmd(port->netdev))
Breakpoint 1, dpif_netdev_run (dpif=0x204f78a0) at lib/dpif-netdev.c:5438 5438 { (gdb) bt #0 dpif_netdev_run (dpif=0x204f78a0) at lib/dpif-netdev.c:5438 #1 0x000000000097d290 in dpif_run (dpif=<optimized out>) at lib/dpif.c:463 #2 0x0000000000934c68 in type_run (type=type@entry=0x202dd910 "netdev") at ofproto/ofproto-dpif.c:370 #3 0x000000000091eb18 in ofproto_type_run (datapath_type=<optimized out>, datapath_type@entry=0x202dd910 "netdev") at ofproto/ofproto.c:1772 #4 0x000000000090d94c in bridge_run__ () at vswitchd/bridge.c:3242 #5 0x0000000000913480 in bridge_run () at vswitchd/bridge.c:3307 #6 0x000000000042469c in main (argc=11, argv=0xffffe2250958) at vswitchd/ovs-vswitchd.c:127 (gdb) b dp_netdev_process_rxq_port Breakpoint 2 at 0x97851c: file lib/dpif-netdev.c, line 4441. (gdb) b pmd_thread_main Breakpoint 3 at 0x97880c: file lib/dpif-netdev.c, line 5658. (gdb)
(gdb) c Continuing. [New Thread 0xffff7c29f910 (LWP 18234)] Breakpoint 1, dpif_netdev_run (dpif=0x204f78a0) at lib/dpif-netdev.c:5438 5438 { (gdb) bt #0 dpif_netdev_run (dpif=0x204f78a0) at lib/dpif-netdev.c:5438 #1 0x000000000097d290 in dpif_run (dpif=<optimized out>) at lib/dpif.c:463 #2 0x0000000000934c68 in type_run (type=type@entry=0x202dd910 "netdev") at ofproto/ofproto-dpif.c:370 #3 0x000000000091eb18 in ofproto_type_run (datapath_type=<optimized out>, datapath_type@entry=0x202dd910 "netdev") at ofproto/ofproto.c:1772 #4 0x000000000090d94c in bridge_run__ () at vswitchd/bridge.c:3242 #5 0x0000000000913480 in bridge_run () at vswitchd/bridge.c:3307 #6 0x000000000042469c in main (argc=11, argv=0xffffe2250958) at vswitchd/ovs-vswitchd.c:127 (gdb) b dp_netdev_process_rxq_port Breakpoint 2 at 0x97851c: file lib/dpif-netdev.c, line 4441. (gdb) b pmd_thread_main Breakpoint 3 at 0x97880c: file lib/dpif-netdev.c, line 5658. (gdb) c Continuing. Breakpoint 2, dp_netdev_process_rxq_port (pmd=pmd@entry=0xffff75f00010, rxq=0x204f7230, port_no=0) at lib/dpif-netdev.c:4441 4441 { (gdb) bt #0 dp_netdev_process_rxq_port (pmd=pmd@entry=0xffff75f00010, rxq=0x204f7230, port_no=0) at lib/dpif-netdev.c:4441 #1 0x000000000097911c in dpif_netdev_run (dpif=<optimized out>) at lib/dpif-netdev.c:5469 #2 0x000000000097d290 in dpif_run (dpif=<optimized out>) at lib/dpif.c:463 #3 0x0000000000934c68 in type_run (type=type@entry=0x202dd910 "netdev") at ofproto/ofproto-dpif.c:370 #4 0x000000000091eb18 in ofproto_type_run (datapath_type=<optimized out>, datapath_type@entry=0x202dd910 "netdev") at ofproto/ofproto.c:1772 #5 0x000000000090d94c in bridge_run__ () at vswitchd/bridge.c:3242 #6 0x0000000000913480 in bridge_run () at vswitchd/bridge.c:3307 #7 0x000000000042469c in main (argc=11, argv=0xffffe2250958) at vswitchd/ovs-vswitchd.c:127 (gdb) c Continuing. Breakpoint 2, dp_netdev_process_rxq_port (pmd=pmd@entry=0xffff75f00010, rxq=0x2052ec80, port_no=2) at lib/dpif-netdev.c:4441 4441 { (gdb) bt #0 dp_netdev_process_rxq_port (pmd=pmd@entry=0xffff75f00010, rxq=0x2052ec80, port_no=2) at lib/dpif-netdev.c:4441 #1 0x000000000097911c in dpif_netdev_run (dpif=<optimized out>) at lib/dpif-netdev.c:5469 #2 0x000000000097d290 in dpif_run (dpif=<optimized out>) at lib/dpif.c:463 #3 0x0000000000934c68 in type_run (type=type@entry=0x202dd910 "netdev") at ofproto/ofproto-dpif.c:370 #4 0x000000000091eb18 in ofproto_type_run (datapath_type=<optimized out>, datapath_type@entry=0x202dd910 "netdev") at ofproto/ofproto.c:1772 ----执行了 #5 0x000000000090d94c in bridge_run__ () at vswitchd/bridge.c:3242 #6 0x0000000000913480 in bridge_run () at vswitchd/bridge.c:3307 #7 0x000000000042469c in main (argc=11, argv=0xffffe2250958) at vswitchd/ovs-vswitchd.c:127 (gdb)
(gdb) n 4451 cycle_timer_start(&pmd->perf_stats, &timer); (gdb) n 4441 { (gdb) n 4447 int rem_qlen = 0, *qlen_p = NULL; (gdb) n 4451 cycle_timer_start(&pmd->perf_stats, &timer); (gdb) n 4441 { (gdb) n 4447 int rem_qlen = 0, *qlen_p = NULL; (gdb) n 4451 cycle_timer_start(&pmd->perf_stats, &timer); (gdb) n 4453 pmd->ctx.last_rxq = rxq; (gdb) n 4457 if (pmd_perf_metrics_enabled(pmd) && rxq->is_vhost) { (gdb) n 4451 cycle_timer_start(&pmd->perf_stats, &timer); (gdb) n 4457 if (pmd_perf_metrics_enabled(pmd) && rxq->is_vhost) { (gdb) n 4451 cycle_timer_start(&pmd->perf_stats, &timer); (gdb) n 4454 dp_packet_batch_init(&batch); (gdb) set print pretty on (gdb) p *batch Structure has no component named operator*. (gdb) p batch $1 = { count = 0, trunc = false, do_not_steal = false, packets = {0xffff00000000, 0xa3505c <format_log_message+768>, 0x0, 0x0, 0x20, 0x1, 0xbfe3da, 0x980414 <ds_put_cstr+48>, 0xffffe22505a0, 0xffffe22505a0, 0xffffe2250570, 0xffffff80ffffffd8, 0xffffe22505a0, 0xffffe22505a0, 0xffffe22502a0, 0xa28468 <xclock_gettime+12>, 0xffffe22502b0, 0xa28560 <time_timespec__+212>, 0xffffe2250300, 0xa28638 <time_msec+28>, 0x202dd910, 0x204f2150, 0xffffe2250300, 0x9fb848 <ovs_mutex_lock_at+32>, 0xffff7c330f58, 0xbd4308, 0xffff00000000, 0xffff7e2a0c64 <malloc+88>, 0xffffe2250320, 0x978f74 <dpif_netdev_run+128>, 0xffffe2250320, 0x979100 <dpif_netdev_run+524>} } (gdb)
dp_netdev_process_rxq_port
(gdb) bt
#0 dp_netdev_process_rxq_port (pmd=pmd@entry=0xfffd546d0010, rxq=0x11c8c5d0, port_no=2) at lib/dpif-netdev.c:4480
#1 0x0000000000978a24 in pmd_thread_main (f_=0xfffd546d0010) at lib/dpif-netdev.c:5731
#2 0x00000000009fc5dc in ovsthread_wrapper (aux_=<optimized out>) at lib/ovs-thread.c:383
#3 0x0000ffff95e37d38 in start_thread (arg=0xfffd4fffd510) at pthread_create.c:309
#4 0x0000ffff95b1f690 in thread_start () from /lib64/libc.so.6
(gdb) c
Continuing.
Breakpoint 1, dp_netdev_process_rxq_port (pmd=pmd@entry=0xfffd546d0010, rxq=0x11c8c5d0, port_no=2) at lib/dpif-netdev.c:4480
4480 dp_netdev_input(pmd, &batch, port_no);
(gdb)
dp_netdev_process_rxq_port(struct dp_netdev_pmd_thread *pmd,
struct netdev_rxq *rx,
odp_port_t port_no)
{
struct dp_packet_batch batch;
int error;
dp_packet_batch_init(&batch);
cycles_count_start(pmd);
/*通过调用netdev_class->rxq_recv从rx中收包存入batch中*/
error = netdev_rxq_recv(rx, &batch);
cycles_count_end(pmd, PMD_CYCLES_POLLING);
if (!error) {
*recirc_depth_get() = 0;
cycles_count_start(pmd);
/*将batch中的包转入datapath中进行处理*/
dp_netdev_input(pmd, &batch, port_no);
cycles_count_end(pmd, PMD_CYCLES_PROCESSING);
}
...
}
netdev_class的实例有NETDEV_DPDK_CLASS，NETDEV_DUMMY_CLASS，NETDEV_BSD_CLASS，NETDEV_LINUX_CLASS.
netdev_rxq_recv &netdev_class ----->netdev_dpdk_vhost_rxq_recv
netdev_rxq_recv(struct netdev_rxq *rx, struct dp_packet_batch *batch,
int *qfill)
{
int retval;
retval = rx->netdev->netdev_class->rxq_recv(rx, batch, qfill);
if (!retval) {
COVERAGE_INC(netdev_received);
} else {
batch->count = 0;
}
return retval;
}
ovs-vsctl add-port br0 vhost-user1 -- set Interface vhost-user1 type=dpdkvhostuser
static const struct netdev_class dpdk_vhost_class = {
.type = "dpdkvhostuser",
NETDEV_DPDK_CLASS_COMMON,
.construct = netdev_dpdk_vhost_construct,
.destruct = netdev_dpdk_vhost_destruct,
.send = netdev_dpdk_vhost_send,
.get_carrier = netdev_dpdk_vhost_get_carrier,
.get_stats = netdev_dpdk_vhost_get_stats,
.get_custom_stats = netdev_dpdk_get_sw_custom_stats,
.get_status = netdev_dpdk_vhost_user_get_status,
.reconfigure = netdev_dpdk_vhost_reconfigure,
.rxq_recv = netdev_dpdk_vhost_rxq_recv,
.rxq_enabled = netdev_dpdk_vhost_rxq_enabled,
};
dp_netdev_input
用户态Datapath处理packet流程：
pmd_thread_main dpif_netdev_run
\ /
\ /
dp_netdev_process_rxq_port
|
dp_netdev_input
|
fast_path_processing
|
handle_packet_upcall
/ \
(2) / \(1)
/ \
dp_netdev_execute_actions dp_netdev_upcall
| |
odp_execute_actions upcall_cb(调用注册的回调函数)
|
dp_execute_cb
|
netdev_send
netdev_dpdk_rxq_recv
> >> #1 0x00000000007d2252 in rte_eth_rx_burst (nb_pkts=32,
> >>
> >> rx_pkts=0x7f3e4bffe7b0, queue_id=0, port_id=0 '\000')
> >>
> >> at /data1/build/dpdk-stable- rte_eth_rx_burst /x86_64-native-linuxapp-gcc/include/rte_ethdev.h:2774
> >>
> >> #2 netdev_dpdk_rxq_recv (rxq=<optimized out>, batch=0x7f3e4bffe7a0)
> >>
> >> at lib/netdev-dpdk.c:1664
> >>
> >> #3 0x000000000072e571 in netdev_rxq_recv (rx=rx at entry=0x7f3e5cc4a680,
> >>
> >> batch=batch at entry=0x7f3e4bffe7a0) at lib/netdev.c:701
> >>
> >> #4 0x000000000070ab0e in dp_netdev_process_rxq_port
> >>
> >> (pmd=pmd at entry=0x29e5e20, rx=0x7f3e5cc4a680, port_no=1) at
> >>
> >> lib/dpif-netdev.c:3114
> >>
> >> #5 0x000000000070ad76 in pmd_thread_main (f_=<optimized out>) at
> >>
> >> lib/dpif-netdev.c:3854
> >>
> >> #6 0x000000000077e4b4 in ovsthread_wrapper (aux_=<optimized out>) at
> >>
> >> lib/ovs-thread.c:348
> >>
> >> #7 0x00007f3e5fe07dc5 in start_thread (arg=0x7f3e4bfff700) at
> >>
> >> pthread_create.c:308
> >>
> >> #8 0x00007f3e5f3eb73d in clone () at
> >>
> >> ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
> >>
> >> (gdb) bt
dpdk_init
(gdb) bt
#0 0x00007f3d5f5c31d7 in raise () from /lib64/libc.so.6
#1 0x00007f3d5f5c48c8 in abort () from /lib64/libc.so.6
#2 0x00007f3d61184d95 in __rte_panic (
funcname=funcname@entry=0x7f3d614846b0 <__func__.9925> "rte_eal_init",
format=format@entry=0x7f3d61483e7c "Cannot init memory\n%.0s")
at /usr/src/debug/openvswitch-2.6.1/dpdk16.11/lib/librte_eal/linuxapp/eal/eal_debug.c:86
#3 0x00007f3d6128973a in rte_eal_init (argc=argc@entry=5, argv=<optimized out>)
at /usr/src/debug/openvswitch-2.6.1/dpdk16.11/lib/librte_eal/linuxapp/eal/eal.c:814
#4 0x00007f3d61416516 in dpdk_init__
(ovs_other_config=ovs_other_config@entry=0x7f3d62d497f8)
at lib/netdev-dpdk.c:3486
#5 0x00007f3d61416b1c in dpdk_init (ovs_other_config=0x7f3d62d497f8)
at lib/netdev-dpdk.c:3541
#6 0x00007f3d613030e2 in bridge_run () at vswitchd/bridge.c:2918
#7 0x00007f3d6118828d in main (argc=10, argv=0x7ffcc105a128) at vswitchd/ovsvswitchd.c:112
(gdb)
#0 virtio_recv_mergeable_pkts (rx_queue=0x7fbe181bcc00, rx_pkts=0x7fbdd1ffa850,
nb_pkts=32)
at /usr/src/debug/openvswitch-2.5.0/dpdk2.2.0/drivers/net/virtio/virtio_rxtx.c:684
684 nb_used = VIRTQUEUE_NUSED(rxvq);
Missing separate debuginfos, use: debuginfo-install glibc-2.17-156.el7.x86_64
keyutils-libs-1.5.8-3.el7.x86_64 krb5-libs-1.14.1-20.el7.x86_64 libcom_err-1.42.9-
9.el7.x86_64 libgcc-4.8.5-9.el7.x86_64 libselinux-2.5-4.el7.x86_64 openssl-libs1.0.1e-58.el7.x86_64 pcre-8.32-15.el7_2.1.x86_64 zlib-1.2.7-17.el7.x86_64
(gdb) bt
#0 virtio_recv_mergeable_pkts (rx_queue=0x7fbe181bcc00, rx_pkts=0x7fbdd1ffa850,
nb_pkts=32)
at /usr/src/debug/openvswitch-2.5.0/dpdk2.2.0/drivers/net/virtio/virtio_rxtx.c:684
#1 0x00007fbe1d61cc6a in rte_eth_rx_burst (nb_pkts=32, rx_pkts=0x7fbdd1ffa850,
queue_id=0,
port_id=0 '\000')
at /usr/src/debug/openvswitch-2.5.0/dpdk-2.2.0/x86_64-native-linuxappgcc/include/rte_ethdev.h:2510
#2 netdev_dpdk_rxq_recv (rxq_=<optimized out>, packets=0x7fbdd1ffa850,
c=0x7fbdd1ffa84c)
at lib/netdev-dpdk.c:1092
#3 0x00007fbe1d592351 in netdev_rxq_recv (rx=<optimized out>,
buffers=buffers@entry=0x7fbdd1ffa850,
cnt=cnt@entry=0x7fbdd1ffa84c) at lib/netdev.c:654
#4 0x00007fbe1d572536 in dp_netdev_process_rxq_port (pmd=pmd@entry=0x7fbe1ea0e730,
rxq=<optimized out>, port=<optimized out>, port=<optimized out>) at lib/dpifnetdev.c:2594
#5 0x00007fbe1d5728b9 in pmd_thread_main (f_=0x7fbe1ea0e730) at lib/dpifnetdev.c:2725
#6 0x00007fbe1d5d48b6 in ovsthread_wrapper (aux_=<optimized out>) at lib/ovsthread.c:340
#7 0x00007fbe1c733dc5 in start_thread () from /lib64/libpthread.so.0
#8 0x00007fbe1bb2c73d in clone () from /lib64/libc.so.6
(gdb) bt
#0 0x0000ffff95b14e24 in poll () from /lib64/libc.so.6
#1 0x0000000000a28780 in time_poll (pollfds=pollfds@entry=0x11c8c820, n_pollfds=11, handles=handles@entry=0x0, timeout_when=453308105, elapsed=elapsed@entry=0xffffe8e999dc) at lib/timeval.c:326
#2 0x0000000000a12408 in poll_block () at lib/poll-loop.c:364
#3 0x00000000004246c8 in main (argc=11, argv=0xffffe8e99be8) at vswitchd/ovs-vswitchd.c:138
(gdb) b rte_vhost_enqueue_burst
Breakpoint 1 at 0x90581c
(gdb) b rte_vhost_dequeue_burst
Breakpoint 2 at 0x905a3c
(gdb) c
Continuing.
[New Thread 0xffff9333f910 (LWP 14604)]
[New Thread 0xfffd4d62d510 (LWP 14605)]
[Thread 0xffff9333f910 (LWP 14604) exited]
[New Thread 0xffff9333f910 (LWP 14620)]
[Thread 0xffff9333f910 (LWP 14620) exited]
[New Thread 0xffff9333f910 (LWP 14621)]
[Thread 0xffff9333f910 (LWP 14621) exited]
[New Thread 0xffff9333f910 (LWP 14636)]
[Thread 0xffff9333f910 (LWP 14636) exited]
[New Thread 0xffff9333f910 (LWP 14646)]
[Switching to Thread 0xfffd4ef1d510 (LWP 14393)]
Breakpoint 2, 0x0000000000905a3c in rte_vhost_dequeue_burst ()
(gdb) bt
#0 0x0000000000905a3c in rte_vhost_dequeue_burst ()
#1 0x0000000000a62d04 in netdev_dpdk_vhost_rxq_recv (rxq=<optimized out>, batch=0xfffd4ef1ca80, qfill=0x0) at lib/netdev-dpdk.c:2442
#2 0x00000000009a440c in netdev_rxq_recv (rx=<optimized out>, batch=batch@entry=0xfffd4ef1ca80, qfill=<optimized out>) at lib/netdev.c:726
#3 0x00000000009785bc in dp_netdev_process_rxq_port (pmd=pmd@entry=0xfffd4ef20010, rxq=0x11efe540, port_no=3) at lib/dpif-netdev.c:4461
#4 0x0000000000978a24 in pmd_thread_main (f_=0xfffd4ef20010) at lib/dpif-netdev.c:5731
#5 0x00000000009fc5dc in ovsthread_wrapper (aux_=<optimized out>) at lib/ovs-thread.c:383
#6 0x0000ffff95e37d38 in start_thread (arg=0xfffd4ef1d510) at pthread_create.c:309
#7 0x0000ffff95b1f690 in thread_start () from /lib64/libc.so.6
(gdb) c
Continuing.
[Switching to Thread 0xfffd4fffd510 (LWP 14391)]
Breakpoint 1, 0x000000000090581c in rte_vhost_enqueue_burst ()
(gdb) btt
Undefined command: "btt". Try "help".
(gdb) bt
#0 0x000000000090581c in rte_vhost_enqueue_burst ()
#1 0x0000000000a60b90 in __netdev_dpdk_vhost_send (netdev=0x19fd81a40, qid=<optimized out>, pkts=pkts@entry=0xfffd3019daf0, cnt=32) at lib/netdev-dpdk.c:2662
#2 0x0000000000a6198c in netdev_dpdk_vhost_send (netdev=<optimized out>, qid=<optimized out>, batch=0xfffd3019dae0, concurrent_txq=<optimized out>) at lib/netdev-dpdk.c:2893
#3 0x00000000009a478c in netdev_send (netdev=0x19fd81a40, qid=qid@entry=0, batch=batch@entry=0xfffd3019dae0, concurrent_txq=concurrent_txq@entry=true) at lib/netdev.c:893
#4 0x000000000096fae8 in dp_netdev_pmd_flush_output_on_port (pmd=pmd@entry=0xfffd546d0010, p=p@entry=0xfffd3019dab0) at lib/dpif-netdev.c:4391
#5 0x000000000096fdfc in dp_netdev_pmd_flush_output_packets (pmd=pmd@entry=0xfffd546d0010, force=force@entry=false) at lib/dpif-netdev.c:4431
#6 0x00000000009787d8 in dp_netdev_pmd_flush_output_packets (force=false, pmd=0xfffd546d0010) at lib/dpif-netdev.c:4501
#7 dp_netdev_process_rxq_port (pmd=pmd@entry=0xfffd546d0010, rxq=0x11c8c5d0, port_no=2) at lib/dpif-netdev.c:4486
#8 0x0000000000978a24 in pmd_thread_main (f_=0xfffd546d0010) at lib/dpif-netdev.c:5731
#9 0x00000000009fc5dc in ovsthread_wrapper (aux_=<optimized out>) at lib/ovs-thread.c:383
#10 0x0000ffff95e37d38 in start_thread (arg=0xfffd4fffd510) at pthread_create.c:309
#11 0x0000ffff95b1f690 in thread_start () from /lib64/libc.so.6
(gdb) c
Continuing.
Breakpoint 1, 0x000000000090581c in rte_vhost_enqueue_burst ()
(gdb) bt
#0 0x000000000090581c in rte_vhost_enqueue_burst ()
#1 0x0000000000a60b90 in __netdev_dpdk_vhost_send (netdev=0x19fd81a40, qid=<optimized out>, pkts=pkts@entry=0xfffd3019daf0, cnt=32) at lib/netdev-dpdk.c:2662
#2 0x0000000000a6198c in netdev_dpdk_vhost_send (netdev=<optimized out>, qid=<optimized out>, batch=0xfffd3019dae0, concurrent_txq=<optimized out>) at lib/netdev-dpdk.c:2893
#3 0x00000000009a478c in netdev_send (netdev=0x19fd81a40, qid=qid@entry=0, batch=batch@entry=0xfffd3019dae0, concurrent_txq=concurrent_txq@entry=true) at lib/netdev.c:893
#4 0x000000000096fae8 in dp_netdev_pmd_flush_output_on_port (pmd=pmd@entry=0xfffd546d0010, p=p@entry=0xfffd3019dab0) at lib/dpif-netdev.c:4391
#5 0x000000000096fdfc in dp_netdev_pmd_flush_output_packets (pmd=pmd@entry=0xfffd546d0010, force=force@entry=false) at lib/dpif-netdev.c:4431
#6 0x00000000009787d8 in dp_netdev_pmd_flush_output_packets (force=false, pmd=0xfffd546d0010) at lib/dpif-netdev.c:4501
#7 dp_netdev_process_rxq_port (pmd=pmd@entry=0xfffd546d0010, rxq=0x11c8c5d0, port_no=2) at lib/dpif-netdev.c:4486
#8 0x0000000000978a24 in pmd_thread_main (f_=0xfffd546d0010) at lib/dpif-netdev.c:5731
#9 0x00000000009fc5dc in ovsthread_wrapper (aux_=<optimized out>) at lib/ovs-thread.c:383
#10 0x0000ffff95e37d38 in start_thread (arg=0xfffd4fffd510) at pthread_create.c:309
#11 0x0000ffff95b1f690 in thread_start () from /lib64/libc.so.6
dp_netdev_process_rxq_port(struct dp_netdev_pmd_thread *pmd,
struct dp_netdev_rxq *rxq,
odp_port_t port_no)
{
struct pmd_perf_stats *s = &pmd->perf_stats;
struct dp_packet_batch batch;
struct cycle_timer timer;
int error;
int batch_cnt = 0;
int rem_qlen = 0, *qlen_p = NULL;
uint64_t cycles;
/* Measure duration for polling and processing rx burst. */
cycle_timer_start(&pmd->perf_stats, &timer);
pmd->ctx.last_rxq = rxq;
dp_packet_batch_init(&batch);
/* Fetch the rx queue length only for vhostuser ports. */
if (pmd_perf_metrics_enabled(pmd) && rxq->is_vhost) {
qlen_p = &rem_qlen;
}
error = netdev_rxq_recv(rxq->rx, &batch, qlen_p); //dequeue
if (!error) {
/* At least one packet received. */
*recirc_depth_get() = 0;
pmd_thread_ctx_time_update(pmd);
batch_cnt = dp_packet_batch_size(&batch);
if (pmd_perf_metrics_enabled(pmd)) {
/* Update batch histogram. */
s->current.batches++;
histogram_add_sample(&s->pkts_per_batch, batch_cnt);
/* Update the maximum vhost rx queue fill level. */
if (rxq->is_vhost && rem_qlen >= 0) {
uint32_t qfill = batch_cnt + rem_qlen;
if (qfill > s->current.max_vhost_qfill) {
s->current.max_vhost_qfill = qfill;
}
}
}
/* Process packet batch. */
dp_netdev_input(pmd, &batch, port_no); //流处理
/* Assign processing cycles to rx queue. */
cycles = cycle_timer_stop(&pmd->perf_stats, &timer);
dp_netdev_rxq_add_cycles(rxq, RXQ_CYCLES_PROC_CURR, cycles);
dp_netdev_pmd_flush_output_packets(pmd, false); // enqueue
} else {
/* Discard cycles. */
cycle_timer_stop(&pmd->perf_stats, &timer);
if (error != EAGAIN && error != EOPNOTSUPP) {
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
VLOG_ERR_RL(&rl, "error receiving data from %s: %s",
netdev_rxq_get_name(rxq->rx), ovs_strerror(error));
}
}
pmd->ctx.last_rxq = NULL;
return batch_cnt;
}
执行 ovs-vsctl add-port br0 vhost-user1 -- set Interface vhost-user1 type=dpdkvhostuser
[New Thread 0xffff9333f910 (LWP 14604)]
[New Thread 0xfffd4d62d510 (LWP 14605)]
[Thread 0xffff9333f910 (LWP 14604) exited]
[New Thread 0xffff9333f910 (LWP 14620)]
[Thread 0xffff9333f910 (LWP 14620) exited]
[New Thread 0xffff9333f910 (LWP 14621)]
[Thread 0xffff9333f910 (LWP 14621) exited]
[New Thread 0xffff9333f910 (LWP 14636)]
[Thread 0xffff9333f910 (LWP 14636) exited]
[New Thread 0xffff9333f910 (LWP 14646)]
[Switching to Thread 0xfffd4ef1d510 (LWP 14393)]
netdev_open
could not create netdev dpdk1 of unknown type dpdk
ovs-vsctl add-br br0 -- set bridge br0 datapath_type=netdev
Breakpoint 1, netdev_open (name=0x11f01c40 "br0", type=type@entry=0x0, netdevp=netdevp@entry=0xffffe8e996c8) at lib/netdev.c:372
372 {
(gdb) bt
#0 netdev_open (name=0x11f01c40 "br0", type=type@entry=0x0, netdevp=netdevp@entry=0xffffe8e996c8) at lib/netdev.c:372
#1 0x000000000094f8a0 in xbridge_addr_create (xbridge=0x11c95dc0, xbridge=0x11c95dc0) at ofproto/ofproto-dpif-xlate.c:900
#2 xlate_ofproto_set (ofproto=ofproto@entry=0x11eb6a80, name=0x11c88a50 "br0", dpif=0x11c8cb90, ml=0x11ecc400, stp=0x0, rstp=0x0, ms=0x0, mbridge=0x11ec9e70, sflow=sflow@entry=0x0, ipfix=ipfix@entry=0x0,
netflow=netflow@entry=0x0, forward_bpdu=forward_bpdu@entry=false, has_in_band=false, support=0x11c51350) at ofproto/ofproto-dpif-xlate.c:1266
#3 0x000000000093555c in type_run (type=type@entry=0x11c96dc0 "netdev") at ofproto/ofproto-dpif.c:481
#4 0x000000000091eb18 in ofproto_type_run (datapath_type=<optimized out>, datapath_type@entry=0x11c96dc0 "netdev") at ofproto/ofproto.c:1772
#5 0x000000000090d94c in bridge_run__ () at vswitchd/bridge.c:3242
#6 0x0000000000913480 in bridge_run () at vswitchd/bridge.c:3307
#7 0x000000000042469c in main (argc=11, argv=0xffffe8e99be8) at vswitchd/ovs-vswitchd.c:127
ovs的datapath_type有nedev和system，netdev表示用户态数据访问，system表示内核数据访问
(gdb) b type_run
Breakpoint 1 at 0x934c28: file ofproto/ofproto-dpif.c, line 360.
(gdb) c
Continuing.
Breakpoint 1, type_run (type=type@entry=0x20530510 "netdev") at ofproto/ofproto-dpif.c:360
360 {
(gdb) list
355 return NULL;
356 }
357
358 static int
359 type_run(const char *type)
360 {
361 struct dpif_backer *backer;
362
363 backer = shash_find_data(&all_dpif_backers, type);
364 if (!backer) {
(gdb) n
363 backer = shash_find_data(&all_dpif_backers, type);
(gdb) n
360 {
(gdb) n
363 backer = shash_find_data(&all_dpif_backers, type);
(gdb) n
360 {
(gdb) n
363 backer = shash_find_data(&all_dpif_backers, type);
(gdb) n
364 if (!backer) {
(gdb) n
370 if (dpif_run(backer->dpif)) {
(gdb) set print pretty on
(gdb) p *backer
$1 = {
type = 0x204f2130 "netdev",
refcount = 1,
dpif = 0x204f78a0,
udpif = 0x204f7940,
odp_to_ofport_lock = {
lock = {
__data = {
__lock = 0,
__nr_readers = 0,
__readers_wakeup = 0,
__writer_wakeup = 0,
__nr_readers_queued = 0,
__nr_writers_queued = 0,
__writer = 0,
__shared = 0,
__pad1 = 0,
__pad2 = 0,
__flags = 1
},
__size = '\000' <repeats 48 times>, "\001\000\000\000\000\000\000",
__align = 0
},
where = 0xbc50c0 "<unlocked>"
},
odp_to_ofport_map = {
buckets = 0x202acc60,
one = 0x0,
mask = 3,
n = 2
},
tnl_backers = {
map = {
buckets = 0x204f21d8,
one = 0x0,
mask = 0,
n = 0
}
},
need_revalidate = 0,
recv_set_enable = true,
meter_ids = 0x20504710,
tp_ids = 0x20508e40,
ct_zones = {
impl = {
p = 0x10f2a40 <empty_cmap>
}
},
ct_tps = {
buckets = 0x204f2218,
one = 0x0,
mask = 0,
n = 0
},
ct_tp_kill_list = {
prev = 0x204f2230,
next = 0x204f2230
},
dp_version_string = 0x2050c9a0 "<built-in>",
---Type <return> to continue, or q <return> to quit---
bt_support = {
masked_set_action = true,
tnl_push_pop = true,
ufid = true,
trunc = true,
clone = true,
sample_nesting = 10,
ct_eventmask = true,
ct_clear = true,
max_hash_alg = 1,
check_pkt_len = true,
ct_timeout = true,
explicit_drop_action = true,
odp = {
max_vlan_headers = 1,
max_mpls_depth = 3,
recirc = true,
ct_state = true,
ct_zone = true,
ct_mark = true,
ct_label = true,
ct_state_nat = true,
ct_orig_tuple = true,
ct_orig_tuple6 = true,
nd_ext = true
}
},
rt_support = {
masked_set_action = true,
tnl_push_pop = true,
ufid = true,
trunc = true,
clone = true,
sample_nesting = 10,
ct_eventmask = true,
ct_clear = true,
max_hash_alg = 1,
check_pkt_len = true,
ct_timeout = true,
explicit_drop_action = true,
odp = {
max_vlan_headers = 1,
max_mpls_depth = 3,
recirc = true,
ct_state = true,
ct_zone = true,
ct_mark = true,
ct_label = true,
ct_state_nat = true,
ct_orig_tuple = true,
ct_orig_tuple6 = true,
nd_ext = true
}
},
tnl_count = {
count = 0
}
}
(gdb)
(gdb)
(gdb) p backer->dpif
$2 = (struct dpif *) 0x204f78a0
(gdb) p *(backer->dpif)
$3 = {
dpif_class = 0xbd2650 <dpif_netdev_class>,
base_name = 0x204f73e0 "ovs-netdev",
full_name = 0x204f78e0 "netdev@ovs-netdev",
netflow_engine_type = 47 '/',
netflow_engine_id = 209 '\321',
current_ms = 464123586
}
(gdb)
dpif_class
datapath接口实现类，每种datapath都有对应的接口实现实例。dpif有两种实现类：dpif_netlink_class、dpif_netdev_class。即system、netdev。比如，dpdk的netdevdatapath类型的实现实例dpif_netdev_class。
(gdb) p *(backer->dpif)
$3 = {
dpif_class = 0xbd2650 <dpif_netdev_class>,
base_name = 0x204f73e0 "ovs-netdev",
full_name = 0x204f78e0 "netdev@ovs-netdev",
netflow_engine_type = 47 '/',
netflow_engine_id = 209 '\321',
current_ms = 464123586
}
(gdb)
struct dpif {
const struct dpif_class *dpif_class;
char *base_name;
char *full_name;
uint8_t netflow_engine_type;
uint8_t netflow_engine_id;
long long int current_ms;
};
struct dpif_class {
/* Type of dpif in this class, e.g. "system", "netdev", etc.
*
* One of the providers should supply a "system" type, since this is
* the type assumed if no type is specified when opening a dpif. */
const char *type;
/* Enumerates the names of all known created datapaths, if possible, into
* 'all_dps'. The caller has already initialized 'all_dps' and other dpif
* classes might already have added names to it.
*
* This is used by the vswitch at startup, so that it can delete any
* datapaths that are not configured.
*
* Some kinds of datapaths might not be practically enumerable, in which
* case this function may be a null pointer. */
int (*enumerate)(struct sset *all_dps);
/* Returns the type to pass to netdev_open() when a dpif of class
* 'dpif_class' has a port of type 'type', for a few special cases
* when a netdev type differs from a port type. For example, when
* using the userspace datapath, a port of type "internal" needs to
* be opened as "tap".
*
* Returns either 'type' itself or a string literal, which must not
* be freed. */
const char *(*port_open_type)(const struct dpif_class *dpif_class,
const char *type);
/* Attempts to open an existing dpif called 'name', if 'create' is false,
* or to open an existing dpif or create a new one, if 'create' is true.
*
* 'dpif_class' is the class of dpif to open.
*
* If successful, stores a pointer to the new dpif in '*dpifp', which must
* have class 'dpif_class'. On failure there are no requirements on what
* is stored in '*dpifp'. */
int (*open)(const struct dpif_class *dpif_class,
const char *name, bool create, struct dpif **dpifp);
/* Closes 'dpif' and frees associated memory. */
void (*close)(struct dpif *dpif);
/* Attempts to destroy the dpif underlying 'dpif'.
*
* If successful, 'dpif' will not be used again except as an argument for
* the 'close' member function. */
int (*destroy)(struct dpif *dpif);
/* Performs periodic work needed by 'dpif', if any is necessary. */
void (*run)(struct dpif *dpif);
/* Arranges for poll_block() to wake up if the "run" member function needs
* to be called for 'dpif'. */
void (*wait)(struct dpif *dpif);
/* Retrieves statistics for 'dpif' into 'stats'. */
int (*get_stats)(const struct dpif *dpif, struct dpif_dp_stats *stats);
/* Adds 'netdev' as a new port in 'dpif'. If '*port_no' is not
* UINT32_MAX, attempts to use that as the port's port number.
*
* If port is successfully added, sets '*port_no' to the new port's
* port number. Returns EBUSY if caller attempted to choose a port
* number, and it was in use. */
int (*port_add)(struct dpif *dpif, struct netdev *netdev,
uint32_t *port_no);
/* Removes port numbered 'port_no' from 'dpif'. */
int (*port_del)(struct dpif *dpif, uint32_t port_no);
/* Queries 'dpif' for a port with the given 'port_no' or 'devname'.
* If 'port' is not null, stores information about the port into
* '*port' if successful.
*
* If 'port' is not null, the caller takes ownership of data in
* 'port' and must free it with dpif_port_destroy() when it is no
* longer needed. */
int (*port_query_by_number)(const struct dpif *dpif, uint32_t port_no,
struct dpif_port *port);
int (*port_query_by_name)(const struct dpif *dpif, const char *devname,
struct dpif_port *port);
/* Returns one greater than the largest port number accepted in flow
* actions. */
int (*get_max_ports)(const struct dpif *dpif);
/* Returns the Netlink PID value to supply in OVS_ACTION_ATTR_USERSPACE
* actions as the OVS_USERSPACE_ATTR_PID attribute's value, for use in
* flows whose packets arrived on port 'port_no'.
*
* A 'port_no' of UINT32_MAX should be treated as a special case. The
* implementation should return a reserved PID, not allocated to any port,
* that the client may use for special purposes.
*
* The return value only needs to be meaningful when DPIF_UC_ACTION has
* been enabled in the 'dpif''s listen mask, and it is allowed to change
* when DPIF_UC_ACTION is disabled and then re-enabled.
*
* A dpif provider that doesn't have meaningful Netlink PIDs can use NULL
* for this function. This is equivalent to always returning 0. */
uint32_t (*port_get_pid)(const struct dpif *dpif, uint32_t port_no);
/* Attempts to begin dumping the ports in a dpif. On success, returns 0
* and initializes '*statep' with any data needed for iteration. On
* failure, returns a positive errno value. */
int (*port_dump_start)(const struct dpif *dpif, void **statep);
/* Attempts to retrieve another port from 'dpif' for 'state', which was
* initialized by a successful call to the 'port_dump_start' function for
* 'dpif'. On success, stores a new dpif_port into 'port' and returns 0.
* Returns EOF if the end of the port table has been reached, or a positive
* errno value on error. This function will not be called again once it
* returns nonzero once for a given iteration (but the 'port_dump_done'
* function will be called afterward).
*
* The dpif provider retains ownership of the data stored in 'port'. It
* must remain valid until at least the next call to 'port_dump_next' or
* 'port_dump_done' for 'state'. */
int (*port_dump_next)(const struct dpif *dpif, void *state,
struct dpif_port *port);
/* Releases resources from 'dpif' for 'state', which was initialized by a
* successful call to the 'port_dump_start' function for 'dpif'. */
int (*port_dump_done)(const struct dpif *dpif, void *state);
/* Polls for changes in the set of ports in 'dpif'. If the set of ports in
* 'dpif' has changed, then this function should do one of the
* following:
*
* - Preferably: store the name of the device that was added to or deleted
* from 'dpif' in '*devnamep' and return 0. The caller is responsible
* for freeing '*devnamep' (with free()) when it no longer needs it.
*
* - Alternatively: return ENOBUFS, without indicating the device that was
* added or deleted.
*
* Occasional 'false positives', in which the function returns 0 while
* indicating a device that was not actually added or deleted or returns
* ENOBUFS without any change, are acceptable.
*
* If the set of ports in 'dpif' has not changed, returns EAGAIN. May also
* return other positive errno values to indicate that something has gone
* wrong. */
int (*port_poll)(const struct dpif *dpif, char **devnamep);
/* Arranges for the poll loop to wake up when 'port_poll' will return a
* value other than EAGAIN. */
void (*port_poll_wait)(const struct dpif *dpif);
/* Queries 'dpif' for a flow entry. The flow is specified by the Netlink
* attributes with types OVS_KEY_ATTR_* in the 'key_len' bytes starting at
* 'key'.
*
* Returns 0 if successful. If no flow matches, returns ENOENT. On other
* failure, returns a positive errno value.
*
* If 'actionsp' is nonnull, then on success '*actionsp' must be set to an
* ofpbuf owned by the caller that contains the Netlink attributes for the
* flow's actions. The caller must free the ofpbuf (with ofpbuf_delete())
* when it is no longer needed.
*
* If 'stats' is nonnull, then on success it must be updated with the
* flow's statistics. */
int (*flow_get)(const struct dpif *dpif,
const struct nlattr *key, size_t key_len,
struct ofpbuf **actionsp, struct dpif_flow_stats *stats);
/* Adds or modifies a flow in 'dpif'. The flow is specified by the Netlink
* attributes with types OVS_KEY_ATTR_* in the 'put->key_len' bytes
* starting at 'put->key'. The associated actions are specified by the
* Netlink attributes with types OVS_ACTION_ATTR_* in the
* 'put->actions_len' bytes starting at 'put->actions'.
*
* - If the flow's key does not exist in 'dpif', then the flow will be
* added if 'put->flags' includes DPIF_FP_CREATE. Otherwise the
* operation will fail with ENOENT.
*
* If the operation succeeds, then 'put->stats', if nonnull, must be
* zeroed.
*
* - If the flow's key does exist in 'dpif', then the flow's actions will
* be updated if 'put->flags' includes DPIF_FP_MODIFY. Otherwise the
* operation will fail with EEXIST. If the flow's actions are updated,
* then its statistics will be zeroed if 'put->flags' includes
* DPIF_FP_ZERO_STATS, and left as-is otherwise.
*
* If the operation succeeds, then 'put->stats', if nonnull, must be set
* to the flow's statistics before the update.
*/
int (*flow_put)(struct dpif *dpif, const struct dpif_flow_put *put);
/* Deletes a flow from 'dpif' and returns 0, or returns ENOENT if 'dpif'
* does not contain such a flow. The flow is specified by the Netlink
* attributes with types OVS_KEY_ATTR_* in the 'del->key_len' bytes
* starting at 'del->key'.
*
* If the operation succeeds, then 'del->stats', if nonnull, must be set to
* the flow's statistics before its deletion. */
int (*flow_del)(struct dpif *dpif, const struct dpif_flow_del *del);
/* Deletes all flows from 'dpif' and clears all of its queues of received
* packets. */
int (*flow_flush)(struct dpif *dpif);
/* Attempts to begin dumping the flows in a dpif. On success, returns 0
* and initializes '*statep' with any data needed for iteration. On
* failure, returns a positive errno value. */
int (*flow_dump_start)(const struct dpif *dpif, void **statep);
/* Attempts to retrieve another flow from 'dpif' for 'state', which was
* initialized by a successful call to the 'flow_dump_start' function for
* 'dpif'. On success, updates the output parameters as described below
* and returns 0. Returns EOF if the end of the flow table has been
* reached, or a positive errno value on error. This function will not be
* called again once it returns nonzero within a given iteration (but the
* 'flow_dump_done' function will be called afterward).
*
* On success, if 'key' and 'key_len' are nonnull then '*key' and
* '*key_len' must be set to Netlink attributes with types OVS_KEY_ATTR_*
* representing the dumped flow's key. If 'actions' and 'actions_len' are
* nonnull then they should be set to Netlink attributes with types
* OVS_ACTION_ATTR_* representing the dumped flow's actions. If 'stats'
* is nonnull then it should be set to the dumped flow's statistics.
*
* All of the returned data is owned by 'dpif', not by the caller, and the
* caller must not modify or free it. 'dpif' must guarantee that it
* remains accessible and unchanging until at least the next call to
* 'flow_dump_next' or 'flow_dump_done' for 'state'. */
int (*flow_dump_next)(const struct dpif *dpif, void *state,
const struct nlattr **key, size_t *key_len,
const struct nlattr **actions, size_t *actions_len,
const struct dpif_flow_stats **stats);
/* Releases resources from 'dpif' for 'state', which was initialized by a
* successful call to the 'flow_dump_start' function for 'dpif'. */
int (*flow_dump_done)(const struct dpif *dpif, void *state);
/* Performs the 'execute->actions_len' bytes of actions in
* 'execute->actions' on the Ethernet frame specified in 'execute->packet'
* taken from the flow specified in the 'execute->key_len' bytes of
* 'execute->key'. ('execute->key' is mostly redundant with
* 'execute->packet', but it contains some metadata that cannot be
* recovered from 'execute->packet', such as tunnel and in_port.) */
int (*execute)(struct dpif *dpif, const struct dpif_execute *execute);
/* Executes each of the 'n_ops' operations in 'ops' on 'dpif', in the order
* in which they are specified, placing each operation's results in the
* "output" members documented in comments.
*
* This function is optional. It is only worthwhile to implement it if
* 'dpif' can perform operations in batch faster than individually. */
void (*operate)(struct dpif *dpif, struct dpif_op **ops, size_t n_ops);
/* Enables or disables receiving packets with dpif_recv() for 'dpif'.
* Turning packet receive off and then back on is allowed to change Netlink
* PID assignments (see ->port_get_pid()). The client is responsible for
* updating flows as necessary if it does this. */
int (*recv_set)(struct dpif *dpif, bool enable);
/* Translates OpenFlow queue ID 'queue_id' (in host byte order) into a
* priority value used for setting packet priority. */
int (*queue_to_priority)(const struct dpif *dpif, uint32_t queue_id,
uint32_t *priority);
/* Polls for an upcall from 'dpif'. If successful, stores the upcall into
* '*upcall', using 'buf' for storage. Should only be called if 'recv_set'
* has been used to enable receiving packets from 'dpif'.
*
* The implementation should point 'upcall->packet' and 'upcall->key' into
* data in the caller-provided 'buf'. If necessary to make room, the
* implementation may expand the data in 'buf'. (This is hardly a great
* way to do things but it works out OK for the dpif providers that exist
* so far.)
*
* This function must not block. If no upcall is pending when it is
* called, it should return EAGAIN without blocking. */
int (*recv)(struct dpif *dpif, struct dpif_upcall *upcall,
struct ofpbuf *buf);
/* Arranges for the poll loop to wake up when 'dpif' has a message queued
* to be received with the recv member function. */
void (*recv_wait)(struct dpif *dpif);
/* Throws away any queued upcalls that 'dpif' currently has ready to
* return. */
void (*recv_purge)(struct dpif *dpif);
};
dpif_class注册
dp_initialize(void)
{
static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER;
if (ovsthread_once_start(&once)) {
int i;
tnl_conf_seq = seq_create();
dpctl_unixctl_register();
tnl_port_map_init();
tnl_neigh_cache_init();
route_table_init();
for (i = 0; i < ARRAY_SIZE(base_dpif_classes); i++) {
dp_register_provider(base_dpif_classes[i]);
}
ovsthread_once_done(&once);
}
}
static const struct dpif_class *base_dpif_classes[] = {
#if defined(__linux__) || defined(_WIN32)
&dpif_netlink_class,
#endif
&dpif_netdev_class,
};
dpif_netdev_class
const struct dpif_class dpif_netdev_class = {
"netdev",
true, /* cleanup_required */
dpif_netdev_init,
dpif_netdev_enumerate,
dpif_netdev_port_open_type,
dpif_netdev_open,
dpif_netdev_close,
dpif_netdev_destroy,
dpif_netdev_run,
dpif_netdev_wait,
dpif_netdev_get_stats,
NULL, /* set_features */
dpif_netdev_port_add,
dpif_netdev_port_del,
dpif_netdev_port_set_config,
dpif_netdev_port_query_by_number,
dpif_netdev_port_query_by_name,
NULL, /* port_get_pid */
dpif_netdev_port_dump_start,
dpif_netdev_port_dump_next,
dpif_netdev_port_dump_done,
dpif_netdev_port_poll,
dpif_netdev_port_poll_wait,
dpif_netdev_flow_flush,
dpif_netdev_flow_dump_create,
dpif_netdev_flow_dump_destroy,
dpif_netdev_flow_dump_thread_create,
dpif_netdev_flow_dump_thread_destroy,
dpif_netdev_flow_dump_next,
dpif_netdev_operate,
NULL, /* recv_set */
NULL, /* handlers_set */
dpif_netdev_set_config,
dpif_netdev_queue_to_priority,
NULL, /* recv */
NULL, /* recv_wait */
NULL, /* recv_purge */
dpif_netdev_register_dp_purge_cb,
dpif_netdev_register_upcall_cb,
dpif_netdev_enable_upcall,
dpif_netdev_disable_upcall,
dpif_netdev_get_datapath_version,
dpif_netdev_ct_dump_start,
dpif_netdev_ct_dump_next,
dpif_netdev_ct_dump_done,
dpif_netdev_ct_flush,
dpif_netdev_ct_set_maxconns,
dpif_netdev_ct_get_maxconns,
dpif_netdev_ct_get_nconns,
dpif_netdev_ct_set_tcp_seq_chk,
dpif_netdev_ct_get_tcp_seq_chk,
dpif_netdev_ct_set_limits,
dpif_netdev_ct_get_limits,
dpif_netdev_ct_del_limits,
NULL, /* ct_set_timeout_policy */
NULL, /* ct_get_timeout_policy */
dpif_netdev_run
(gdb) b dpif_netdev_run
Breakpoint 1 at 0x978ef4: file lib/dpif-netdev.c, line 5438.
(gdb) c
Continuing.
Breakpoint 1, dpif_netdev_run (dpif=0x204f78a0) at lib/dpif-netdev.c:5438
5438 {
(gdb) bt
#0 dpif_netdev_run (dpif=0x204f78a0) at lib/dpif-netdev.c:5438
#1 0x000000000097d290 in dpif_run (dpif=<optimized out>) at lib/dpif.c:463
#2 0x0000000000934c68 in type_run (type=type@entry=0x202db460 "netdev") at ofproto/ofproto-dpif.c:370
#3 0x000000000091eb18 in ofproto_type_run (datapath_type=<optimized out>, datapath_type@entry=0x202db460 "netdev") at ofproto/ofproto.c:1772
#4 0x000000000090d94c in bridge_run__ () at vswitchd/bridge.c:3242
#5 0x0000000000913480 in bridge_run () at vswitchd/bridge.c:3307
#6 0x000000000042469c in main (argc=11, argv=0xffffe2250958) at vswitchd/ovs-vswitchd.c:127
(gdb)
#0 0x000000000053489a in mlx5_tx_mb2mr (mb=0x7fa5d8711180, txq=0x7fa5d812cdc0) at /usr/src/debug/openvswitch-2.9.0-3.el7.tis.1.x86_64/dpdk-17.11/drivers/net/mlx5/mlx5_rxtx.h:551
551 if (likely(txq->mp2mr[i]->start <= addr && txq->mp2mr[i]->end >= addr))
Missing separate debuginfos, use: debuginfo-install glibc-2.17-222.el7.x86_64 keyutils-libs-1.5.8-3.el7.x86_64 krb5-libs-1.15.1-19.el7.x86_64 libcap-ng-0.7.5-4.el7.x86_64 libcom_err-1.42.9-12.el7_5.x86_64 libgcc-4.8.5-28.el7_5.1.x86_64 libibverbs-43mlnx1-1.43302.tis.1.x86_64 libnl3-3.2.28-4.el7.x86_64 libselinux-2.5-12.el7.x86_64 numactl-libs-2.0.9-7.el7.x86_64 openssl-libs-1.0.2k-12.el7.x86_64 pcre-8.32-17.el7.x86_64 zlib-1.2.7-17.el7.x86_64
(gdb) bt
#0 0x000000000053489a in mlx5_tx_mb2mr (mb=0x7fa5d8711180, txq=0x7fa5d812cdc0) at /usr/src/debug/openvswitch-2.9.0-3.el7.tis.1.x86_64/dpdk-17.11/drivers/net/mlx5/mlx5_rxtx.h:551
#1 mlx5_tx_burst_mpw (dpdk_txq=<optimized out>, pkts=0x7ffffae34aa8, pkts_n=<optimized out>) at /usr/src/debug/openvswitch-2.9.0-3.el7.tis.1.x86_64/dpdk-17.11/drivers/net/mlx5/mlx5_rxtx.c:906
#2 0x0000000000410dc5 in rte_eth_tx_burst (nb_pkts=<optimized out>, tx_pkts=0x7ffffae34aa0, queue_id=0, port_id=<optimized out>) at /usr/src/debug/openvswitch-2.9.0-3.el7.tis.1.x86_64/dpdk-17.11/x86_64-native-linuxapp-gcc/include/rte_ethdev.h:3172
#3 netdev_dpdk_eth_tx_burst (cnt=1, pkts=0x7ffffae34aa0, qid=0, dev=0xffffffffffffef40) at lib/netdev-dpdk.c:1690
#4 dpdk_do_tx_copy (netdev=netdev@entry=0x7fa5fffb4700, qid=qid@entry=0, batch=batch@entry=0x160daf0) at lib/netdev-dpdk.c:2089
#5 0x00000000006ae4ab in netdev_dpdk_send__ (concurrent_txq=<optimized out>, batch=0x160daf0, qid=0, dev=<optimized out>) at lib/netdev-dpdk.c:2133
#6 netdev_dpdk_eth_send (netdev=0x7fa5fffb4700, qid=<optimized out>, batch=0x160daf0, concurrent_txq=false) at lib/netdev-dpdk.c:2164
#7 0x00000000005fb521 in netdev_send (netdev=<optimized out>, qid=<optimized out>, batch=batch@entry=0x160daf0, concurrent_txq=concurrent_txq@entry=false) at lib/netdev.c:791
#8 0x00000000005cdf15 in dp_netdev_pmd_flush_output_on_port (pmd=pmd@entry=0x7fa629a74010, p=p@entry=0x160dac0) at lib/dpif-netdev.c:3216
#9 0x00000000005ce247 in dp_netdev_pmd_flush_output_packets (pmd=pmd@entry=0x7fa629a74010, force=force@entry=false) at lib/dpif-netdev.c:3256
#10 0x00000000005d4a68 in dp_netdev_pmd_flush_output_packets (force=false, pmd=0x7fa629a74010) at lib/dpif-netdev.c:3249
#11 dp_netdev_process_rxq_port (pmd=pmd@entry=0x7fa629a74010, rxq=0x1682710, port_no=2) at lib/dpif-netdev.c:3292
#12 0x00000000005d549a in dpif_netdev_run (dpif=<optimized out>) at lib/dpif-netdev.c:3940
#13 0x0000000000592a5a in type_run (type=<optimized out>) at ofproto/ofproto-dpif.c:344
#14 0x000000000057d651 in ofproto_type_run (datapath_type=datapath_type@entry=0x167f5b0 "netdev") at ofproto/ofproto.c:1705
#15 0x000000000056cce5 in bridge_run__ () at vswitchd/bridge.c:2933
#16 0x0000000000572d08 in bridge_run () at vswitchd/bridge.c:2997
#17 0x000000000041246d in main (argc=10, argv=0x7ffffae35328) at vswitchd/ovs-vswitchd.c:119
(gdb)
dpif_netdev_port_add
Breakpoint 2, dpif_netdev_port_add (dpif=0x204f78a0, netdev=0x19fd81a40, port_nop=0xffffe22502a4) at lib/dpif-netdev.c:1913
1913 {
(gdb) bt
#0 dpif_netdev_port_add (dpif=0x204f78a0, netdev=0x19fd81a40, port_nop=0xffffe22502a4) at lib/dpif-netdev.c:1913
#1 0x000000000097d508 in dpif_port_add (dpif=0x204f78a0, netdev=netdev@entry=0x19fd81a40, port_nop=port_nop@entry=0xffffe225030c) at lib/dpif.c:593
#2 0x000000000092a714 in port_add (ofproto_=0x202de690, netdev=0x19fd81a40) at ofproto/ofproto-dpif.c:3864
#3 0x0000000000920b40 in ofproto_port_add (ofproto=0x202de690, netdev=0x19fd81a40, ofp_portp=ofp_portp@entry=0xffffe2250400) at ofproto/ofproto.c:2070
#4 0x000000000090e530 in iface_do_create (errp=0xffffe2250410, netdevp=0xffffe2250408, ofp_portp=0xffffe2250400, iface_cfg=0x20531860, br=0x202dd9c0) at vswitchd/bridge.c:2060
#5 iface_create (port_cfg=0x2054ec30, iface_cfg=0x20531860, br=0x202dd9c0) at vswitchd/bridge.c:2103
#6 bridge_add_ports__ (br=br@entry=0x202dd9c0, wanted_ports=wanted_ports@entry=0x202ddaa0, with_requested_port=with_requested_port@entry=false) at vswitchd/bridge.c:1167
#7 0x0000000000910278 in bridge_add_ports (wanted_ports=<optimized out>, br=0x202dd9c0) at vswitchd/bridge.c:1183
#8 bridge_reconfigure (ovs_cfg=ovs_cfg@entry=0x202e3c00) at vswitchd/bridge.c:896
#9 0x00000000009134e0 in bridge_run () at vswitchd/bridge.c:3328
#10 0x000000000042469c in main (argc=11, argv=0xffffe2250958) at vswitchd/ovs-vswitchd.c:127
(gdb)
dpdk_vhost_class && port
static const struct netdev_class dpdk_vhost_class = {
.type = "dpdkvhostuser",
NETDEV_DPDK_CLASS_COMMON,
.construct = netdev_dpdk_vhost_construct,
.destruct = netdev_dpdk_vhost_destruct,
.send = netdev_dpdk_vhost_send,// enqeue
.get_carrier = netdev_dpdk_vhost_get_carrier,
.get_stats = netdev_dpdk_vhost_get_stats,
.get_custom_stats = netdev_dpdk_get_sw_custom_stats,
.get_status = netdev_dpdk_vhost_user_get_status,
.reconfigure = netdev_dpdk_vhost_reconfigure,
.rxq_recv = netdev_dpdk_vhost_rxq_recv, //dequeue
.rxq_enabled = netdev_dpdk_vhost_rxq_enabled,
};
static int
dpif_netdev_port_add(struct dpif *dpif, struct netdev *netdev,
odp_port_t *port_nop)
{
struct dp_netdev *dp = get_dp_netdev(dpif);
char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
const char *dpif_port;
odp_port_t port_no;
int error;
ovs_mutex_lock(&dp->port_mutex);
dpif_port = netdev_vport_get_dpif_port(netdev, namebuf, sizeof namebuf);
if (*port_nop != ODPP_NONE) {
port_no = *port_nop;
error = dp_netdev_lookup_port(dp, *port_nop) ? EBUSY : 0;
} else {
port_no = choose_port(dp, dpif_port);
error = port_no == ODPP_NONE ? EFBIG : 0;
}
if (!error) {
*port_nop = port_no;
error = do_add_port(dp, dpif_port, netdev_get_type(netdev), port_no);
}
ovs_mutex_unlock(&dp->port_mutex);
return error;
}
(gdb) b dpif_netdev_run
Breakpoint 1 at 0x978ef4: file lib/dpif-netdev.c, line 5438.
(gdb) c
Continuing.
Breakpoint 1, dpif_netdev_run (dpif=0x204f78a0) at lib/dpif-netdev.c:5438
5438 {
(gdb) bt
#0 dpif_netdev_run (dpif=0x204f78a0) at lib/dpif-netdev.c:5438
#1 0x000000000097d290 in dpif_run (dpif=<optimized out>) at lib/dpif.c:463
#2 0x0000000000934c68 in type_run (type=type@entry=0x202db460 "netdev") at ofproto/ofproto-dpif.c:370
#3 0x000000000091eb18 in ofproto_type_run (datapath_type=<optimized out>, datapath_type@entry=0x202db460 "netdev") at ofproto/ofproto.c:1772
#4 0x000000000090d94c in bridge_run__ () at vswitchd/bridge.c:3242
#5 0x0000000000913480 in bridge_run () at vswitchd/bridge.c:3307
#6 0x000000000042469c in main (argc=11, argv=0xffffe2250958) at vswitchd/ovs-vswitchd.c:127
(gdb) delete 1
(gdb) b dpif_netdev_port_add
Breakpoint 2 at 0x9747c8: file lib/dpif-netdev.c, line 1913.
(gdb) c
Continuing.
[New Thread 0xffff7c29f910 (LWP 17675)]
[Thread 0xffff7c29f910 (LWP 17675) exited]
[New Thread 0xffff7c29f910 (LWP 17677)]
Breakpoint 2, dpif_netdev_port_add (dpif=0x204f78a0, netdev=0x19fd81a40, port_nop=0xffffe22502a4) at lib/dpif-netdev.c:1913
1913 {
(gdb) bt
#0 dpif_netdev_port_add (dpif=0x204f78a0, netdev=0x19fd81a40, port_nop=0xffffe22502a4) at lib/dpif-netdev.c:1913
#1 0x000000000097d508 in dpif_port_add (dpif=0x204f78a0, netdev=netdev@entry=0x19fd81a40, port_nop=port_nop@entry=0xffffe225030c) at lib/dpif.c:593
#2 0x000000000092a714 in port_add (ofproto_=0x202de690, netdev=0x19fd81a40) at ofproto/ofproto-dpif.c:3864
#3 0x0000000000920b40 in ofproto_port_add (ofproto=0x202de690, netdev=0x19fd81a40, ofp_portp=ofp_portp@entry=0xffffe2250400) at ofproto/ofproto.c:2070
#4 0x000000000090e530 in iface_do_create (errp=0xffffe2250410, netdevp=0xffffe2250408, ofp_portp=0xffffe2250400, iface_cfg=0x20531860, br=0x202dd9c0) at vswitchd/bridge.c:2060
#5 iface_create (port_cfg=0x2054ec30, iface_cfg=0x20531860, br=0x202dd9c0) at vswitchd/bridge.c:2103
#6 bridge_add_ports__ (br=br@entry=0x202dd9c0, wanted_ports=wanted_ports@entry=0x202ddaa0, with_requested_port=with_requested_port@entry=false) at vswitchd/bridge.c:1167
#7 0x0000000000910278 in bridge_add_ports (wanted_ports=<optimized out>, br=0x202dd9c0) at vswitchd/bridge.c:1183
#8 bridge_reconfigure (ovs_cfg=ovs_cfg@entry=0x202e3c00) at vswitchd/bridge.c:896
#9 0x00000000009134e0 in bridge_run () at vswitchd/bridge.c:3328
#10 0x000000000042469c in main (argc=11, argv=0xffffe2250958) at vswitchd/ovs-vswitchd.c:127
(gdb) n
1914 struct dp_netdev *dp = get_dp_netdev(dpif);
(gdb) list
1909
1910 static int
1911 dpif_netdev_port_add(struct dpif *dpif, struct netdev *netdev,
1912 odp_port_t *port_nop)
1913 {
1914 struct dp_netdev *dp = get_dp_netdev(dpif);
1915 char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
1916 const char *dpif_port;
1917 odp_port_t port_no;
1918 int error;
(gdb) set print pretty on
(gdb) p *dp
value has been optimized out
(gdb) n
1913 {
(gdb) n
1914 struct dp_netdev *dp = get_dp_netdev(dpif);
(gdb) n
1913 {
(gdb) p *dp
value has been optimized out
(gdb) p *dpif
$1 = {
dpif_class = 0xbd2650 <dpif_netdev_class>,
base_name = 0x204f73e0 "ovs-netdev",
full_name = 0x204f78e0 "netdev@ovs-netdev",
netflow_engine_type = 47 '/',
netflow_engine_id = 209 '\321',
current_ms = 465573501
}
(gdb) n
1914 struct dp_netdev *dp = get_dp_netdev(dpif);
(gdb) n
1920 ovs_mutex_lock(&dp->port_mutex);
(gdb) p *dp
value has been optimized out
(gdb) n
[Thread 0xffff7c29f910 (LWP 17677) exited]
1921 dpif_port = netdev_vport_get_dpif_port(netdev, namebuf, sizeof namebuf);
(gdb) p *netdev
$2 = {
name = 0x20500a30 "vhost-user2",
netdev_class = 0xc090e0 <dpdk_vhost_class>,
auto_classified = false,
ol_flags = 0,
mtu_user_config = false,
ref_cnt = 1,
change_seq = 2,
reconfigure_seq = 0x2029d280,
last_reconfigure_seq = 16781297,
n_txq = 0,
n_rxq = 0,
node = 0x20533f50,
saved_flags_list = {
prev = 0x19fd81a90,
next = 0x19fd81a90
},
flow_api = {
p = 0x0
},
hw_info = {
oor = false,
offload_count = 0,
pending_count = 0
}
}
(gdb) n
1922 if (*port_nop != ODPP_NONE) {
(gdb) n
1921 dpif_port = netdev_vport_get_dpif_port(netdev, namebuf, sizeof namebuf);
(gdb) n
1922 if (*port_nop != ODPP_NONE) {
(gdb) n
1926 port_no = choose_port(dp, dpif_port);
(gdb) n
1930 *port_nop = port_no;
(gdb) n
1931 error = do_add_port(dp, dpif_port, netdev_get_type(netdev), port_no);
(gdb) p *netdev
$3 = {
name = 0x20500a30 "vhost-user2",
netdev_class = 0xc090e0 <dpdk_vhost_class>,
auto_classified = false,
ol_flags = 0,
mtu_user_config = false,
ref_cnt = 1,
change_seq = 2,
reconfigure_seq = 0x2029d280,
last_reconfigure_seq = 16781297,
n_txq = 0,
n_rxq = 0,
node = 0x20533f50,
saved_flags_list = {
prev = 0x19fd81a90,
next = 0x19fd81a90
},
flow_api = {
p = 0x0
},
hw_info = {
oor = false,
offload_count = 0,
pending_count = 0
}
}
(gdb) n
[New Thread 0xffff7c29f910 (LWP 17711)]
1933 ovs_mutex_unlock(&dp->port_mutex);
(gdb) n
1936 }
(gdb) n
dpif_port_add (dpif=0x204f78a0, netdev=netdev@entry=0x19fd81a40, port_nop=port_nop@entry=0xffffe225030c) at lib/dpif.c:594
594 if (!error) {
(gdb) n
595 VLOG_DBG_RL(&dpmsg_rl, "%s: added %s as port %"PRIu32,
(gdb) n
598 if (!dpif_is_tap_port(netdev_get_type(netdev))) {
(gdb) n
602 dpif_port.type = CONST_CAST(char *, netdev_get_type(netdev));
(gdb) n
604 dpif_port.port_no = port_no;
(gdb) n
605 netdev_ports_insert(netdev, dpif->dpif_class, &dpif_port);
(gdb) p *netdev
$4 = {
name = 0x20500a30 "vhost-user2",
netdev_class = 0xc090e0 <dpdk_vhost_class>,
auto_classified = false,
ol_flags = 0,
mtu_user_config = false,
ref_cnt = 3,
change_seq = 3,
reconfigure_seq = 0x2029d280,
last_reconfigure_seq = 16781303,
n_txq = 1,
n_rxq = 1,
node = 0x20533f50,
saved_flags_list = {
prev = 0x19fd81a90,
next = 0x19fd81a90
},
flow_api = {
p = 0x0
},
hw_info = {
oor = false,
offload_count = 0,
pending_count = 0
}
}
(gdb) p dpif_port
$5 = {
name = 0x20500a30 "vhost-user2",
type = 0xffff <Address 0xffff out of bounds>,
port_no = 539616016
}
(gdb) p *(dpif->dpif_class)
$6 = {
type = 0xbd4548 "netdev",
cleanup_required = true,
init = 0x96cd7c <dpif_netdev_init>,
enumerate = 0x96f3c4 <dpif_netdev_enumerate>,
port_open_type = 0x96c2b4 <dpif_netdev_port_open_type>,
open = 0x974c00 <dpif_netdev_open>,
close = 0x9744b0 <dpif_netdev_close>,
destroy = 0x96e734 <dpif_netdev_destroy>,
run = 0x978ef4 <dpif_netdev_run>,
wait = 0x971798 <dpif_netdev_wait>,
get_stats = 0x96e63c <dpif_netdev_get_stats>,
set_features = 0x0,
port_add = 0x9747c8 <dpif_netdev_port_add>,
port_del = 0x9744f4 <dpif_netdev_port_del>,
port_set_config = 0x971340 <dpif_netdev_port_set_config>,
port_query_by_number = 0x9716b4 <dpif_netdev_port_query_by_number>,
port_query_by_name = 0x970af4 <dpif_netdev_port_query_by_name>,
port_get_pid = 0x0,
port_dump_start = 0x96c1d0 <dpif_netdev_port_dump_start>,
port_dump_next = 0x96e580 <dpif_netdev_port_dump_next>,
port_dump_done = 0x96c4e8 <dpif_netdev_port_dump_done>,
port_poll = 0x96e7f0 <dpif_netdev_port_poll>,
port_poll_wait = 0x96e7ac <dpif_netdev_port_poll_wait>,
flow_flush = 0x96f7f0 <dpif_netdev_flow_flush>,
flow_dump_create = 0x96c204 <dpif_netdev_flow_dump_create>,
flow_dump_destroy = 0x96c9d0 <dpif_netdev_flow_dump_destroy>,
flow_dump_thread_create = 0x96c808 <dpif_netdev_flow_dump_thread_create>,
flow_dump_thread_destroy = 0x96c4e4 <dpif_netdev_flow_dump_thread_destroy>,
flow_dump_next = 0x96ebe4 <dpif_netdev_flow_dump_next>,
operate = 0x97711c <dpif_netdev_operate>,
recv_set = 0x0,
handlers_set = 0x0,
set_config = 0x96e1a0 <dpif_netdev_set_config>,
queue_to_priority = 0x96c130 <dpif_netdev_queue_to_priority>,
recv = 0x0,
recv_wait = 0x0,
recv_purge = 0x0,
register_dp_purge_cb = 0x96e164 <dpif_netdev_register_dp_purge_cb>,
register_upcall_cb = 0x96e128 <dpif_netdev_register_upcall_cb>,
enable_upcall = 0x96e0f0 <dpif_netdev_enable_upcall>,
disable_upcall = 0x96e0b8 <dpif_netdev_disable_upcall>,
get_datapath_version = 0x96c1f8 <dpif_netdev_get_datapath_version>,
ct_dump_start = 0x96e034 <dpif_netdev_ct_dump_start>,
ct_dump_next = 0x96cbd8 <dpif_netdev_ct_dump_next>,
ct_dump_done = 0x96cba0 <dpif_netdev_ct_dump_done>,
ct_flush = 0x96dfdc <dpif_netdev_ct_flush>,
ct_set_maxconns = 0x96dfa4 <dpif_netdev_ct_set_maxconns>,
ct_get_maxconns = 0x96df6c <dpif_netdev_ct_get_maxconns>,
ct_get_nconns = 0x96df34 <dpif_netdev_ct_get_nconns>,
ct_set_tcp_seq_chk = 0x96def8 <dpif_netdev_ct_set_tcp_seq_chk>,
ct_get_tcp_seq_chk = 0x96deac <dpif_netdev_ct_get_tcp_seq_chk>,
ct_set_limits = 0x96ddfc <dpif_netdev_ct_set_limits>,
ct_get_limits = 0x96dcf0 <dpif_netdev_ct_get_limits>,
ct_del_limits = 0x96dc60 <dpif_netdev_ct_del_limits>,
ct_set_timeout_policy = 0x0,
ct_get_timeout_policy = 0x0,
ct_del_timeout_policy = 0x0,
ct_timeout_policy_dump_start = 0x0,
---Type <return> to continue, or q <return> to quit---
ct_timeout_policy_dump_next = 0x0,
ct_timeout_policy_dump_done = 0x0,
ct_get_timeout_policy_name = 0x0,
ipf_set_enabled = 0x96dc0c <dpif_netdev_ipf_set_enabled>,
ipf_set_min_frag = 0x96dbb8 <dpif_netdev_ipf_set_min_frag>,
ipf_set_max_nfrags = 0x96db74 <dpif_netdev_ipf_set_max_nfrags>,
ipf_get_status = 0x96db28 <dpif_netdev_ipf_get_status>,
ipf_dump_start = 0x96cb98 <dpif_netdev_ipf_dump_start>,
ipf_dump_next = 0x96dadc <dpif_netdev_ipf_dump_next>,
ipf_dump_done = 0x96cb90 <dpif_netdev_ipf_dump_done>,
meter_get_features = 0x96c1a8 <dpif_netdev_meter_get_features>,
meter_set = 0x96d900 <dpif_netdev_meter_set>,
meter_get = 0x96d718 <dpif_netdev_meter_get>,
meter_del = 0x96d854 <dpif_netdev_meter_del>
}
(gdb)
(gdb) n
602 dpif_port.type = CONST_CAST(char *, netdev_get_type(netdev));
(gdb) n
605 netdev_ports_insert(netdev, dpif->dpif_class, &dpif_port);
(gdb) p dpif_port.type
$7 = 0xc0b588 "dpdkvhostuser"
(gdb)
(gdb) n
602 dpif_port.type = CONST_CAST(char *, netdev_get_type(netdev));
(gdb) n
605 netdev_ports_insert(netdev, dpif->dpif_class, &dpif_port);
(gdb) p dpif_port.type
$7 = 0xc0b588 "dpdkvhostuser"
(gdb) n
603 dpif_port.name = CONST_CAST(char *, netdev_name);
(gdb) n
604 dpif_port.port_no = port_no;
(gdb) p dpif_port.name
$8 = 0x20500a30 "vhost-user2"
(gdb) n
605 netdev_ports_insert(netdev, dpif->dpif_class, &dpif_port);
(gdb) p dpif_port.port_no
$9 = 3
(gdb) n
[Thread 0xffff7c29f910 (LWP 17711) exited]
612 if (port_nop) {
(gdb) n
613 *port_nop = port_no;
(gdb) n
616 }
(gdb) n
(gdb) n
602 dpif_port.type = CONST_CAST(char *, netdev_get_type(netdev));
(gdb) n
605 netdev_ports_insert(netdev, dpif->dpif_class, &dpif_port);
(gdb) p dpif_port.type
$7 = 0xc0b588 "dpdkvhostuser"
(gdb) n
603 dpif_port.name = CONST_CAST(char *, netdev_name);
(gdb) n
604 dpif_port.port_no = port_no;
(gdb) p dpif_port.name
$8 = 0x20500a30 "vhost-user2"
(gdb) n
605 netdev_ports_insert(netdev, dpif->dpif_class, &dpif_port);
(gdb) p dpif_port.port_no
$9 = 3
(gdb) n
[Thread 0xffff7c29f910 (LWP 17711) exited]
612 if (port_nop) {
(gdb) n
613 *port_nop = port_no;
(gdb) n
616 }
(gdb) n
port_add (ofproto_=0x202de690, netdev=0x19fd81a40) at ofproto/ofproto-dpif.c:3865
3865 if (error) {
(gdb) n
3868 if (netdev_get_tunnel_config(netdev)) {
(gdb) n
[New Thread 0xffff7c29f910 (LWP 17739)]
3874 if (netdev_get_tunnel_config(netdev)) {
(gdb) n
3877 sset_add(&ofproto->ports, devname);
(gdb) n
3879 return 0;
(gdb) n
3880 }
(gdb) n
ofproto_port_add (ofproto=0x202de690, netdev=0x19fd81a40, ofp_portp=ofp_portp@entry=0xffffe2250400) at ofproto/ofproto.c:2071
2071 if (!error) {
(gdb) n
2072 const char *netdev_name = netdev_get_name(netdev);
(gdb) n
[Thread 0xffff7c29f910 (LWP 17739) exited]
[New Thread 0xffff7c24f910 (LWP 17740)]
2074 simap_put(&ofproto->ofp_requests, netdev_name,
(gdb) p netdev_name
$10 = 0x20500a30 "vhost-user2"
(gdb) n
2076 error = update_port(ofproto, netdev_name);
(gdb) n
2078 if (ofp_portp) {
(gdb) n
2079 *ofp_portp = OFPP_NONE;
(gdb) n
2080 if (!error) {
(gdb) n
2083 error = ofproto_port_query_by_name(ofproto,
(gdb) n
[Thread 0xffff7c24f910 (LWP 17740) exited]
[New Thread 0xffff7c29f910 (LWP 17741)]
2086 if (!error) {
(gdb) n
2087 *ofp_portp = ofproto_port.ofp_port;
(gdb) n
2088 ofproto_port_destroy(&ofproto_port);
(gdb) n
2087 *ofp_portp = ofproto_port.ofp_port;
(gdb) n
2088 ofproto_port_destroy(&ofproto_port);
(gdb) n
[Thread 0xffff7c29f910 (LWP 17741) exited]
[New Thread 0xffff7c24f910 (LWP 17742)]
2093 }
(gdb) n
iface_do_create (errp=0xffffe2250410, netdevp=0xffffe2250408, ofp_portp=0xffffe2250400, iface_cfg=0x20531860, br=0x202dd9c0) at vswitchd/bridge.c:2061
2061 if (error) {
(gdb) n
2072 VLOG_INFO("bridge %s: added interface %s on port %d",
(gdb) n
[Thread 0xffff7c24f910 (LWP 17742) exited]
[New Thread 0xffff7c29f910 (LWP 17743)]
2075 *netdevp = netdev;
(gdb) n
iface_create (port_cfg=0x2054ec30, iface_cfg=0x20531860, br=0x202dd9c0) at vswitchd/bridge.c:2111
2111 port = port_lookup(br, port_cfg->name);
(gdb) n
2103 error = iface_do_create(br, iface_cfg, &ofp_port, &netdev, &errp);
(gdb) n
2111 port = port_lookup(br, port_cfg->name);
(gdb) n
2112 if (!port) {
(gdb) n
2113 port = port_create(br, port_cfg);
(gdb) delete 1
No breakpoint number 1.
(gdb) quit
A debugging session is active.
Inferior 1 [process 17155] will be detached.
Quit anyway? (y or n) y
Detaching from program: /usr/sbin/ovs-vswitchd, process 17155
[Inferior 1 (process 17155) detached]
[root@localhost ovs]#
iface_do_create(const struct bridge *br,
const struct ovsrec_interface *iface_cfg,
ofp_port_t *ofp_portp, struct netdev **netdevp,
char **errp)
{
struct netdev *netdev = NULL;
int error;
const char *type;
if (netdev_is_reserved_name(iface_cfg->name)) {
VLOG_WARN("could not create interface %s, name is reserved",
iface_cfg->name);
error = EINVAL;
goto error;
}
type = ofproto_port_open_type(br->ofproto,
iface_get_type(iface_cfg, br->cfg));
error = netdev_open(iface_cfg->name, type, &netdev);
if (error) {
VLOG_WARN_BUF(errp, "could not open network device %s (%s)",
iface_cfg->name, ovs_strerror(error));
goto error;
}
error = iface_set_netdev_config(iface_cfg, netdev, errp);
if (error) {
goto error;
}
netdev_dpdk_vhost_construct
Breakpoint 1, netdev_dpdk_vhost_construct (netdev=0x19fd81a40) at lib/netdev-dpdk.c:1369
1369 {
(gdb) bt
#0 netdev_dpdk_vhost_construct (netdev=0x19fd81a40) at lib/netdev-dpdk.c:1369
#1 0x00000000009a3d60 in netdev_open (name=<optimized out>, type=0x20532350 "dpdkvhostuser", netdevp=netdevp@entry=0xffffe2250418) at lib/netdev.c:436
#2 0x000000000090e488 in iface_do_create (errp=0xffffe2250410, netdevp=0xffffe2250408, ofp_portp=0xffffe2250400, iface_cfg=0x2052bcf0, br=0x202dd9c0) at vswitchd/bridge.c:2045
#3 iface_create (port_cfg=0x20550ac0, iface_cfg=0x2052bcf0, br=0x202dd9c0) at vswitchd/bridge.c:2103
#4 bridge_add_ports__ (br=br@entry=0x202dd9c0, wanted_ports=wanted_ports@entry=0x202ddaa0, with_requested_port=with_requested_port@entry=false) at vswitchd/bridge.c:1167
#5 0x0000000000910278 in bridge_add_ports (wanted_ports=<optimized out>, br=0x202dd9c0) at vswitchd/bridge.c:1183
#6 bridge_reconfigure (ovs_cfg=ovs_cfg@entry=0x202e3c00) at vswitchd/bridge.c:896
#7 0x00000000009134e0 in bridge_run () at vswitchd/bridge.c:3328
#8 0x000000000042469c in main (argc=11, argv=0xffffe2250958) at vswitchd/ovs-vswitchd.c:127
(gdb)
int
netdev_open(const char *name, const char *type, struct netdev **netdevp)
OVS_EXCLUDED(netdev_mutex)
{
struct netdev *netdev;
int error = 0;
if (!name[0]) {
/* Reject empty names. This saves the providers having to do this. At
* least one screwed this up: the netdev-linux "tap" implementation
* passed the name directly to the Linux TUNSETIFF call, which treats
* an empty string as a request to generate a unique name. */
return EINVAL;
}
netdev_initialize();
ovs_mutex_lock(&netdev_mutex);
netdev = shash_find_data(&netdev_shash, name);
if (netdev &&
type && type[0] && strcmp(type, netdev->netdev_class->type)) {
if (netdev->auto_classified) {
/* If this device was first created without a classification type,
* for example due to routing or tunneling code, and they keep a
* reference, a "classified" call to open will fail. In this case
* we remove the classless device, and re-add it below. We remove
* the netdev from the shash, and change the sequence, so owners of
* the old classless device can release/cleanup. */
if (netdev->node) {
shash_delete(&netdev_shash, netdev->node);
netdev->node = NULL;
netdev_change_seq_changed(netdev);
}
netdev = NULL;
} else {
error = EEXIST;
}
}
if (!netdev) {
struct netdev_registered_class *rc;
rc = netdev_lookup_class(type && type[0] ? type : "system");
if (rc && ovs_refcount_try_ref_rcu(&rc->refcnt)) {
netdev = rc->class->alloc();
if (netdev) {
memset(netdev, 0, sizeof *netdev);
netdev->netdev_class = rc->class;
netdev->auto_classified = type && type[0] ? false : true;
netdev->name = xstrdup(name);
netdev->change_seq = 1;
netdev->reconfigure_seq = seq_create();
netdev->last_reconfigure_seq =
seq_read(netdev->reconfigure_seq);
ovsrcu_set(&netdev->flow_api, NULL);
netdev->hw_info.oor = false;
netdev->node = shash_add(&netdev_shash, name, netdev);
/* By default enable one tx and rx queue per netdev. */
netdev->n_txq = netdev->netdev_class->send ? 1 : 0;
netdev->n_rxq = netdev->netdev_class->rxq_alloc ? 1 : 0;
ovs_list_init(&netdev->saved_flags_list);
error = rc->class->construct(netdev);
//调用construct
if (!error) {
netdev_change_seq_changed(netdev);
} else {
ovs_refcount_unref(&rc->refcnt);
seq_destroy(netdev->reconfigure_seq);
free(netdev->name);
ovs_assert(ovs_list_is_empty(&netdev->saved_flags_list));
shash_delete(&netdev_shash, netdev->node);
rc->class->dealloc(netdev);
}
} else {
error = ENOMEM;
}
} else {
VLOG_WARN("could not create netdev %s of unknown type %s",
name, type);
error = EAFNOSUPPORT;
}
}
if (!error) {
netdev->ref_cnt++;
*netdevp = netdev;
} else {
*netdevp = NULL;
}
ovs_mutex_unlock(&netdev_mutex);
return error;
}
netdev_class netdev_dpdk_class
static struct netdev_class netdev_dpdk_class = { "dpdk", dpdk_class_init, /* init */ NULL, /* netdev_dpdk_run */ NULL, /* netdev_dpdk_wait */ netdev_dpdk_alloc, netdev_dpdk_construct, netdev_dpdk_destruct, netdev_dpdk_dealloc, netdev_dpdk_get_config, NULL, /* netdev_dpdk_set_config */ NULL, /* get_tunnel_config */ netdev_dpdk_send, /* send */ NULL, /* send_wait */ netdev_dpdk_set_etheraddr, netdev_dpdk_get_etheraddr, netdev_dpdk_get_mtu, netdev_dpdk_set_mtu, netdev_dpdk_get_ifindex, netdev_dpdk_get_carrier, netdev_dpdk_get_carrier_resets, netdev_dpdk_set_miimon, netdev_dpdk_get_stats, netdev_dpdk_set_stats, netdev_dpdk_get_features, NULL, /* set_advertisements */ NULL, /* set_policing */ NULL, /* get_qos_types */ NULL, /* get_qos_capabilities */ NULL, /* get_qos */ NULL, /* set_qos */ NULL, /* get_queue */ NULL, /* set_queue */ NULL, /* delete_queue */ NULL, /* get_queue_stats */ NULL, /* queue_dump_start */ NULL, /* queue_dump_next */ NULL, /* queue_dump_done */ NULL, /* dump_queue_stats */ NULL, /* get_in4 */ NULL, /* set_in4 */ NULL, /* get_in6 */ NULL, /* add_router */ NULL, /* get_next_hop */ netdev_dpdk_get_status, NULL, /* arp_lookup */ netdev_dpdk_update_flags, netdev_dpdk_rxq_alloc, netdev_dpdk_rxq_construct, netdev_dpdk_rxq_destruct, netdev_dpdk_rxq_dealloc, netdev_dpdk_rxq_recv, NULL, /* rxq_wait */ NULL, /* rxq_drain */ };
ovs-vsctl add-port br0 dpdk1 -- set Interface dpdk1 type=dpdk options:dpdk-devargs=0000:05:00.0
(gdb) b netdev_dpdk_construct Breakpoint 1 at 0xa5aca0: file lib/netdev-dpdk.c, line 1467. (gdb) b netdev_dpdk_send Function "netdev_dpdk_send" not defined. Make breakpoint pending on future shared library load? (y or [n]) n (gdb) b netdev_dpdk_send Function "netdev_dpdk_send" not defined. Make breakpoint pending on future shared library load? (y or [n]) y Breakpoint 2 (netdev_dpdk_send) pending. (gdb) b netdev_dpdk_rxq_recv Breakpoint 3 at 0xa62fd8: file lib/netdev-dpdk.c, line 2489. (gdb) c Continuing. Breakpoint 1, netdev_dpdk_construct (netdev=0x19fd81ec0) at lib/netdev-dpdk.c:1467 1467 { (gdb) bt #0 netdev_dpdk_construct (netdev=0x19fd81ec0) at lib/netdev-dpdk.c:1467 #1 0x00000000009a3d60 in netdev_open (name=<optimized out>, type=0x6ed09a0 "dpdk", netdevp=netdevp@entry=0xfffff6389b38) at lib/netdev.c:436 #2 0x000000000090e488 in iface_do_create (errp=0xfffff6389b30, netdevp=0xfffff6389b28, ofp_portp=0xfffff6389b20, iface_cfg=0x5476680, br=0x51d29b0) at vswitchd/bridge.c:2045 #3 iface_create (port_cfg=0x6ed09c0, iface_cfg=0x5476680, br=0x51d29b0) at vswitchd/bridge.c:2103 #4 bridge_add_ports__ (br=br@entry=0x51d29b0, wanted_ports=wanted_ports@entry=0x51d2a90, with_requested_port=with_requested_port@entry=false) at vswitchd/bridge.c:1167 #5 0x0000000000910278 in bridge_add_ports (wanted_ports=<optimized out>, br=0x51d29b0) at vswitchd/bridge.c:1183 #6 bridge_reconfigure (ovs_cfg=ovs_cfg@entry=0x51d0620) at vswitchd/bridge.c:896 #7 0x00000000009134e0 in bridge_run () at vswitchd/bridge.c:3328 #8 0x000000000042469c in main (argc=11, argv=0xfffff638a078) at vswitchd/ovs-vswitchd.c:127 (gdb) c Continuing. [New Thread 0xffffb43df910 (LWP 25825)] [Switching to Thread 0xfffd53ffd510 (LWP 19066)] Breakpoint 3, netdev_dpdk_rxq_recv (rxq=0x19fd81400, batch=0xfffd53ffca80, qfill=0x0) at lib/netdev-dpdk.c:2489 2489 { (gdb) bt #0 netdev_dpdk_rxq_recv (rxq=0x19fd81400, batch=0xfffd53ffca80, qfill=0x0) at lib/netdev-dpdk.c:2489 #1 0x00000000009a440c in netdev_rxq_recv (rx=<optimized out>, batch=batch@entry=0xfffd53ffca80, qfill=<optimized out>) at lib/netdev.c:726 #2 0x00000000009785bc in dp_netdev_process_rxq_port (pmd=pmd@entry=0x5d3f680, rxq=0x51d14a0, port_no=3) at lib/dpif-netdev.c:4461 #3 0x0000000000978a24 in pmd_thread_main (f_=0x5d3f680) at lib/dpif-netdev.c:5731 #4 0x00000000009fc5dc in ovsthread_wrapper (aux_=<optimized out>) at lib/ovs-thread.c:383 #5 0x0000ffffb7fd7d38 in start_thread (arg=0xfffd53ffd510) at pthread_create.c:309 #6 0x0000ffffb7cbf690 in thread_start () from /lib64/libc.so.6 (gdb) c Continuing.
netdev_dpdk|INFO|vHost Device '/var/run/openvswitch/vhost-user1' has been removed
destroy_device(int vid)
{
struct netdev_dpdk *dev;
bool exists = false;
char ifname[IF_NAME_SZ];
rte_vhost_get_ifname(vid, ifname, sizeof ifname);
ovs_mutex_lock(&dpdk_mutex);
LIST_FOR_EACH (dev, list_node, &dpdk_list) {
if (netdev_dpdk_get_vid(dev) == vid) {
ovs_mutex_lock(&dev->mutex);
dev->vhost_reconfigured = false;
ovsrcu_index_set(&dev->vid, -1);
memset(dev->vhost_rxq_enabled, 0,
dev->up.n_rxq * sizeof *dev->vhost_rxq_enabled);
netdev_dpdk_txq_map_clear(dev);
netdev_change_seq_changed(&dev->up);
ovs_mutex_unlock(&dev->mutex);
exists = true;
break;
}
}
ovs_mutex_unlock(&dpdk_mutex);
if (exists) {
/*
* Wait for other threads to quiesce after setting the 'virtio_dev'
* to NULL, before returning.
*/
ovsrcu_synchronize();
/*
* As call to ovsrcu_synchronize() will end the quiescent state,
* put thread back into quiescent state before returning.
*/
ovsrcu_quiesce_start();
VLOG_INFO("vHost Device '%s' has been removed", ifname);
} else {
VLOG_INFO("vHost Device '%s' not found", ifname);
}
}
