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/tools/testing/selftests/net/netfilter/packetdrill/
A Dconntrack_synack_old.pkt4 // 10.176.25.8.829 > 10.192.171.30.2049: Flags [S], seq 2375731741, win 29200, options [mss 1460,sa…
6 …76.25.8.829: Flags [S.], seq 145824453, ack 643160523, win 65535, options [mss 8952,nop,wscale 5,T…
8 // 10.192.171.30.2049 > 10.176.25.8.829: Flags [R.], seq 1, ack 1, win 65535, options [mss 8952,nop…
10 // 10.176.25.8.829 > 10.192.171.30.2049: Flags [S], seq 2375731741, win 29200, options [mss 1460,sa…
13 …6.25.8.829: Flags [S.], seq 162602410, ack 2375731742, win 65535, options [mss 8952,nop,wscale 5,T…
24 0.1 > S 0:0(0) win 65535 <mss 1460,sackOK,TS val 1 ecr 0,nop,wscale 8>
27 0.1 < S. 145824453:145824453(0) ack 643160523 win 240 <mss 1440,nop,nop,TS val 1 ecr 1,nop,wscale 0>
30 1.01 > S 0:0(0) win 65535 <mss 1460,sackOK,TS val 1015 ecr 0,nop,wscale 8>
34 +0 < S. 145758918:145758918(0) ack 1 win 250 <mss 1460,nop,nop,TS val 1 ecr 1,nop,wscale 0>
39 // actual packet: 3.010000 S 0:0(0) win 65535 <mss 1460,sackOK,TS val 1015 ecr 0,nop,wscale 8>
A Dconntrack_synack_reuse.pkt15 +0 < S 0:0(0) win 32792 <mss 1000,nop,wscale 7, TS val 1 ecr 0,nop,nop>
16 +0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,TS val 100 ecr 1,nop,wscale 8>
24 1.0 < S 2000:2000(0) win 32792 <mss 1000,nop,wscale 7, TS val 233 ecr 0,nop,nop>
31 1.5 < S 2000:2000(0) win 32792 <mss 1000,nop,wscale 0, TS val 233 ecr 0,nop,nop>
A Dconntrack_syn_challenge_ack.pkt22 0.1 > S 0:0(0) win 65535 <mss 1460,sackOK,TS val 1 ecr 0,nop,wscale 8>
25 0.1 < . 145824453:145824453(0) ack 643160523 win 240 <mss 1460,nop,nop,TS val 1 ecr 1,nop,wscale 0>
32 +0.01 > S 0:0(0) win 65535 <mss 1460,sackOK,TS val 1 ecr 0,nop,wscale 8>
35 +0.1 < S. 0:0(0) ack 1 win 250 <mss 1460,nop,nop,TS val 1 ecr 1,nop,wscale 0>
/tools/testing/selftests/net/packetdrill/
A Dtcp_ooo-before-and-after-accept.pkt3 --mss=1000
16 +0 < S 0:0(0) win 65535 <mss 1000,nop,nop,sackOK,nop,wscale 7>
17 +0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 10>
41 +0 < S 0:0(0) win 65535 <mss 1000,nop,nop,sackOK,nop,wscale 7>
42 +0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 10>
A Dtcp_blocking_blocking-read.pkt5 --mss=1000
15 +.1 < S 0:0(0) win 32792 <mss 1000,nop,wscale 7>
16 +0 > S. 0:0(0) ack 1 <mss 1460,nop,wscale 8>
A Dtcp_ooo_rcv_mss.pkt3 --mss=1000
13 +0 < S 0:0(0) win 65535 <mss 1000,nop,nop,sackOK,nop,wscale 7>
14 +0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 10>
A Dtcp_rcv_toobig.pkt3 --mss=1000
16 +0 < S 0:0(0) win 32792 <mss 1000,nop,wscale 7>
17 +0 > S. 0:0(0) ack 1 win 18980 <mss 1460,nop,wscale 0>
A Dtcp_rcv_big_endseq.pkt3 --mss=1000
16 +0 < S 0:0(0) win 32792 <mss 1000,nop,wscale 7>
17 +0 > S. 0:0(0) ack 1 <mss 1460,nop,wscale 0>
A Dtcp_blocking_blocking-connect.pkt11 +0 > S 0:0(0) <mss 1460,sackOK,TS val 100 ecr 0,nop,wscale 8>
12 +.1 < S. 0:0(0) ack 1 win 5792 <mss 1460,nop,wscale 2,nop,nop,sackOK>
A Dtcp_blocking_blocking-accept.pkt13 +.1 < S 0:0(0) win 32792 <mss 1000,nop,wscale 7>
14 +0 > S. 0:0(0) ack 1 <mss 1460,nop,wscale 8>
A Dtcp_dsack_mult.pkt4 --mss=1000
14 +0 < S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 7>
15 +0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 8>
A Dtcp_slow_start_slow-start-after-idle.pkt3 // This test expects tso size to be at least initial cwnd * mss
14 +0 < S 0:0(0) win 65535 <mss 1000,sackOK,nop,nop,nop,wscale 7>
15 +0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 8>
A Dtcp_slow_start_slow-start-after-win-update.pkt3 // This test expects tso size to be at least initial cwnd * mss
14 +0 < S 0:0(0) win 65535 <mss 1000,sackOK,nop,nop,nop,wscale 7>
15 +0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 8>
A Dtcp_fast_recovery_prr-ss-30pkt-lost1_4.pkt12 +0 < S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 7>
13 +0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 8>
40 // Writes another 10 packets, which the ssthresh*mss amount
A Dtcp_syscall_bad_arg_sendmsg-empty-iov.pkt10 +0 < S 0:0(0) win 32792 <mss 1000,nop,wscale 7>
11 +0 > S. 0:0(0) ack 1 <mss 1460,nop,wscale 8>
A Dtcp_zerocopy_client.pkt10 +0 > S 0:0(0) <mss 1460,sackOK,TS val 0 ecr 0,nop,wscale 8>
11 +0 < S. 0:0(0) ack 1 win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 7>
A Dtcp_zerocopy_fastopen-client.pkt18 +0 > S 0:0(0) <mss 1460,sackOK,TS val 1000 ecr 0,nop,wscale 8,FO,nop,nop>
19 …+.01 < S. 123:123(0) ack 1 win 14600 <mss 940,TS val 2000 ecr 1000,sackOK,nop,wscale 6, FO abcd123…
39 +0 > S 0:500(500) <mss 1460,nop,nop,sackOK,nop,wscale 8,FO abcd1234,nop,nop>
40 +.05 < S. 5678:5678(0) ack 501 win 14600 <mss 1460,nop,nop,sackOK,nop,wscale 6>
A Dtcp_tcp_info_tcp-info-last_data_recv.pkt11 +0 > S 0:0(0) <mss 1460,sackOK,TS val 100 ecr 0,nop,wscale 8>
12 +.030 < S. 0:0(0) ack 1 win 10000 <mss 1000,sackOK,nop,nop,nop,wscale 8>
A Dtcp_inq_server.pkt4 --mss=1000
15 +0 < S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 10>
16 +0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 8>
A Dtcp_ecn_ecn-uses-ect0.pkt14 +0 > SEW 0:0(0) <mss 1460,sackOK,TS val 100 ecr 0,nop,wscale 8>
15 +.002 < SE. 0:0(0) ack 1 win 32767 <mss 1000,nop,wscale 6,nop,nop,sackOK>
A Dtcp_syscall_bad_arg_syscall-invalid-buf-ptr.pkt12 +0 < S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 10>
13 +0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 8>
A Dtcp_ts_recent_fin_tsval.pkt16 +0 < S 0:0(0) win 20000 <mss 1000,sackOK,TS val 100 ecr 0>
17 +0 > S. 0:0(0) ack 1 <mss 1460,sackOK,TS val 100 ecr 100>
A Dtcp_validate_validate-established-no-flags.pkt13 +0 < S 0:0(0) win 20000 <mss 1000,sackOK,nop,nop>
14 +0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK>
/tools/testing/selftests/net/
A Dpsock_snd.sh15 readonly mss="$((${mtu} - ${iphlen} - ${udphlen}))"
16 readonly mss_exceeds="$((${mss} + 1))"
58 ./in_netns.sh ./psock_snd -l "${mss}"
72 ./in_netns.sh ./psock_snd -d -l "${mss}"
/tools/testing/selftests/bpf/progs/
A Dtest_tcp_custom_syncookie.c224 __u16 *mss; in tcp_parse_option() local
247 mss = next(ctx, 2); in tcp_parse_option()
248 if (*opsize == TCPOLEN_MSS && ctx->tcp->syn && mss) in tcp_parse_option()
249 ctx->attrs.mss = get_unaligned_be16(mss); in tcp_parse_option()
325 if (ctx->attrs.mss >= msstab4[mssind]) in tcp_prepare_cookie()
328 ctx->attrs.mss = msstab4[mssind]; in tcp_prepare_cookie()
333 if (ctx->attrs.mss >= msstab6[mssind]) in tcp_prepare_cookie()
336 ctx->attrs.mss = msstab6[mssind]; in tcp_prepare_cookie()
371 ctx->attrs.mss); in tcp_write_options()
492 ctx->attrs.mss = msstab4[mssind]; in tcp_validate_cookie()
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