[testing] Enhancement: Two new tests for pop

[iyzhang]

This PR adds two basic tests for pop:

1. A duplicate packet arrives before the ack goes out.
2. A packet arrives out of order before the previous packet or the ack (and causing an ack).

[github-actions]

libos = catnap
commit id = 286e19b

collapsed_stack	num_calls	cycles_per_call	nanoseconds_per_call	percent_time
bgc::catnap::transport::epoll	9729486.32	1886.29	823.05	32.14
demikernel::sgafree	11534.26	76.17	32.76	0.05
demikernel::sgaalloc	11281.92	126.40	54.24	0.11
ioc::network::libos::push;catnap::linux::transport::push	9066.10	737.43	322.41	4.69
ioc::network::libos::push	8800.48	16581.62	7260.68	6.16
demikernel::push	8800.48	526.30	228.89	0.14
ioc::network::libos::pop;catnap::linux::transport::pop	8023.01	532.89	231.73	1.03
ioc::network::libos::pop	7814.56	13701912.38	5815012.52	25.17
demikernel::pop	7814.56	556.87	239.31	0.11
ioc::network::libos::pushto	536.67	7555.06	3224.61	25.48
ioc::network::libos::pushto;catnap::linux::transport::push	536.67	560.44	239.15	7.42
demikernel::pushto	536.67	447.68	191.04	1.49
demikernel::async_close	32.50	948.38	378.01	0.02
ioc::network::libos::connect	24.95	6201373.19	2651946.05	30.35
ioc::network::libos::connect;catnap::linux::transport::connect	24.95	60165.90	25974.44	2.12
demikernel::connect	24.95	2321.52	1002.36	0.01
ioc::network::libos::close	18.35	23856.75	10293.34	0.08
ioc::network::libos::close;catnap::linux::transport::close	18.35	22964.04	9908.62	96.32
demikernel::accept	15.42	1336.62	579.81	0.00
ioc::network::libos::accept	15.39	904144020.26	393902573.12	44.50
ioc::network::libos::accept;catnap::linux::transport::accept	15.39	2630.94	1149.57	0.00
demikernel::socket	9.50	127703.47	55294.59	0.22
demikernel::socket;catnap::linux::transport::socket	9.50	125927.69	54514.78	97.05
demikernel::new	1.00	245445.48	106011.64	0.14
demikernel::bind	1.00	27393.12	11901.15	0.01
demikernel::bind;catnap::linux::transport::bind	1.00	23017.65	10003.44	83.97
demikernel::listen	1.00	14231.92	6185.81	0.00
demikernel::listen;catnap::linux::transport::listen	1.00	13114.68	5700.18	92.12
demikernel::close	0.00	nan	nan	0.00

[github-actions]

libos = catpowder
commit id = 286e19b

collapsed_stack	num_calls	cycles_per_call	nanoseconds_per_call	percent_time
bgc::inetstack::poll_recv;inetstack::layer4_endpoint::poll_once	11145494.30	681.30	294.03	86.07
bgc::inetstack::poll_recv	5572747.15	1584.24	683.68	53.12
bgc::inetstack::tcp::established::background	18347.23	3817.31	1645.13	0.54
bgc::inetstack::tcp::established::background;tcp::established::background::receiver	18347.23	1479.16	629.12	33.28
bgc::inetstack::tcp::established::background;tcp::established::background::retransmitter	18327.18	1268.73	548.23	33.31
bgc::inetstack::tcp::established::background;tcp::established::background::acknowledger	18327.18	494.96	221.42	10.97
bgc::inetstack::tcp::established::background;tcp::established::background::sender	18327.18	162.95	70.13	4.47
ioc::network::libos::pop	9516.47	944.03	407.38	0.09
ioc::network::libos::push;inetstack::push	8762.80	6192.42	2696.70	1.73
demikernel::sgafree	8750.04	127.65	55.28	0.01
ioc::network::libos::push	8073.97	33648267.75	15259303.36	42.96
demikernel::push	8073.74	579.09	249.85	0.04
demikernel::sgaalloc	6504.67	143.14	61.79	0.02
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::for	6185.54	631.86	273.42	0.68
demikernel::pop	6035.14	568.79	244.93	0.03
ioc::network::libos::pushto	705.33	4775.43	2170.47	2.78
ioc::network::libos::pushto;inetstack::push	705.33	4194.68	1906.53	87.85
demikernel::pushto	705.33	537.12	244.33	0.30
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::for;udp::receive	209.33	260.02	116.47	66.87
bgc::passive_listening::poll	62.86	5270.66	2277.13	0.00
ioc::network::libos::close	47.05	10216.49	4376.46	0.14
ioc::network::libos::connect	41.86	21310.28	9207.73	0.16
bgc::inetstack::tcp::passiveopen::background	41.86	15228.58	6566.14	0.00
ioc::network::libos::accept	38.39	2543.00	1099.10	0.00
demikernel::async_close	32.50	743.41	316.68	0.01
demikernel::accept	21.86	1301.59	563.01	0.00
demikernel::connect	20.93	3953.77	1714.26	0.02
demikernel::socket	10.30	2239.25	969.84	0.00
bgc::inetstack::arp::background	4.12	1826.41	789.92	0.00
bgc::inetstack::poll_recv;inetstack::poll;inetstack::layer4_endpoint::poll_once	2.00	5520.78	2377.06	81.08
bgc::inetstack::icmp::background	1.03	3404.43	1465.58	0.00
demikernel::new	1.00	90657683.27	39159316.36	18.63
demikernel::bind	1.00	24950.38	11002.12	0.00
bgc::inetstack::poll_recv;inetstack::poll	1.00	13545.40	5834.60	0.04
demikernel::listen	1.00	5804.64	2502.04	0.00
demikernel::close	0.00	nan	nan	0.00

[anandbonde]

Looks good.

[github-actions]

libos = catnip
commit id = 286e19b

collapsed_stack	num_calls	cycles_per_call	nanoseconds_per_call	percent_time
bgc::inetstack::poll_recv;inetstack::layer4_endpoint::poll_once	17065573.07	332.21	138.27	76.99
bgc::inetstack::poll_recv;inetstack::layer4_endpoint::poll_once;catnip::runtime::receive	17065573.07	194.16	80.75	58.47
bgc::inetstack::poll_recv	8532786.53	863.32	359.42	33.47
bgc::inetstack::tcp::established::background	16480.14	2904.17	1215.52	0.34
bgc::inetstack::tcp::established::background;tcp::established::background::receiver	16480.14	857.80	352.02	30.32
bgc::inetstack::tcp::established::background;tcp::established::background::retransmitter	16459.21	1212.09	514.46	34.24
bgc::inetstack::tcp::established::background;tcp::established::background::acknowledger	16459.21	380.89	161.22	11.37
bgc::inetstack::tcp::established::background;tcp::established::background::sender	16459.21	134.10	54.66	4.37
ioc::network::libos::pop	9046.96	750.92	316.39	0.05
demikernel::sgafree	8846.28	87.93	36.63	0.00
ioc::network::libos::push;inetstack::push	8762.80	2299.94	980.73	0.57
ioc::network::libos::push;inetstack::push;catnip::runtime::transmit	8762.80	352.61	149.50	14.13
ioc::network::libos::push	8073.74	33627321.51	13629989.12	32.49
demikernel::push	8073.74	799.87	334.73	0.02
demikernel::sgaalloc	6679.33	146.49	61.17	0.01
demikernel::pop	6053.67	512.05	213.58	0.01
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::for	3046.36	809.34	338.14	0.56
ioc::network::libos::pushto	2405.67	1411.77	580.24	0.14
ioc::network::libos::pushto;inetstack::push	2405.67	679.55	279.63	48.22
demikernel::pushto	2405.67	478.29	196.42	0.05
ioc::network::libos::pushto;inetstack::push;catnip::runtime::transmit	2405.67	250.28	103.19	36.70
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::for;udp::receive	551.00	298.82	118.94	74.60
bgc::passive_listening::poll	58.00	5574.70	2334.02	0.00
ioc::network::libos::close	49.20	7858.33	3286.06	0.01
ioc::network::libos::connect	41.86	15766.13	6678.20	0.01
bgc::inetstack::tcp::passiveopen::background	41.86	13974.14	5870.87	0.00
ioc::network::libos::connect;catnip::runtime::transmit	41.86	6127.32	2595.32	28.30
ioc::network::libos::accept	38.32	2455.61	1028.30	0.00
demikernel::async_close	32.50	568.90	226.32	0.00
ioc::network::libos::close;catnip::runtime::transmit	31.39	616.00	257.88	5.60
demikernel::accept	21.86	1239.20	518.05	0.00
bgc::inetstack::tcp::passiveopen::background;catnip::runtime::transmit	20.93	17090.74	7185.03	40.50
demikernel::connect	20.93	2575.66	1090.92	0.00
bgc::inetstack::tcp::established::background;tcp::established::background::receiver;catnip::runtime::transmit	20.93	753.75	314.81	4.85
demikernel::socket	10.30	1219.57	506.94	0.00
bgc::inetstack::tcp::established::background;tcp::established::background::acknowledger;catnip::runtime::transmit	9.00	1690.00	703.89	26.92
bgc::inetstack::arp::background	4.30	2097.20	872.37	0.00
bgc::inetstack::poll_recv;inetstack::poll;inetstack::layer4_endpoint::poll_once	2.00	20565.45	8554.08	95.55
bgc::inetstack::poll_recv;inetstack::poll;inetstack::layer4_endpoint::poll_once;catnip::runtime::receive	2.00	18296.98	7609.31	88.99
bgc::inetstack::icmp::background	1.05	3383.98	1410.00	0.00
demikernel::new	1.00	1781326255.08	740655119.07	45.53
bgc::inetstack::poll_recv;inetstack::poll	1.00	43036.33	17900.07	0.13
demikernel::bind	1.00	11655.50	4799.64	0.00
demikernel::listen	1.00	5208.50	2162.34	0.00
demikernel::close	0.00	nan	nan	0.00