On Fri, Dec 15, 2023 at 02:36:17AM +0000, Dmitry Safonov wrote: > Reverse to icmps-discard test: the server accepts ICMPs, using > TCP_AO_CMDF_ACCEPT_ICMP and it is expected to fail under ICMP > flood from client. Test that the default pre-TCP-AO behaviour functions > when TCP_AO_CMDF_ACCEPT_ICMP is set. > > Expected output for ipv4 version (in case it receives ICMP_PROT_UNREACH): > > # ./icmps-accept_ipv4 > > 1..3 > > # 3209[lib/setup.c:166] rand seed 1642623870 > > TAP version 13 > > # 3209[lib/proc.c:207] Snmp6 Ip6InReceives: 0 => 1 > > # 3209[lib/proc.c:207] Snmp6 Ip6InNoRoutes: 0 => 1 > > # 3209[lib/proc.c:207] Snmp6 Ip6InOctets: 0 => 76 > > # 3209[lib/proc.c:207] Snmp6 Ip6InNoECTPkts: 0 => 1 > > # 3209[lib/proc.c:207] Tcp InSegs: 3 => 23 > > # 3209[lib/proc.c:207] Tcp OutSegs: 2 => 22 > > # 3209[lib/proc.c:207] IcmpMsg InType3: 0 => 4 > > # 3209[lib/proc.c:207] Icmp InMsgs: 0 => 4 > > # 3209[lib/proc.c:207] Icmp InDestUnreachs: 0 => 4 > > # 3209[lib/proc.c:207] Ip InReceives: 3 => 27 > > # 3209[lib/proc.c:207] Ip InDelivers: 3 => 27 > > # 3209[lib/proc.c:207] Ip OutRequests: 2 => 22 > > # 3209[lib/proc.c:207] IpExt InOctets: 288 => 3420 > > # 3209[lib/proc.c:207] IpExt OutOctets: 124 => 3244 > > # 3209[lib/proc.c:207] IpExt InNoECTPkts: 3 => 25 > > # 3209[lib/proc.c:207] TcpExt TCPPureAcks: 1 => 2 > > # 3209[lib/proc.c:207] TcpExt TCPOrigDataSent: 0 => 20 > > # 3209[lib/proc.c:207] TcpExt TCPDelivered: 0 => 19 > > # 3209[lib/proc.c:207] TcpExt TCPAOGood: 3 => 23 > > ok 1 InDestUnreachs delivered 4 > > ok 2 server failed with -92: Protocol not available > > ok 3 TCPAODroppedIcmps counter didn't change: 0 >= 0 > > # Totals: pass:3 fail:0 xfail:0 xpass:0 skip:0 error:0 > > Expected output for ipv6 version (in case it receives ADM_PROHIBITED): > > # ./icmps-accept_ipv6 > > 1..3 > > # 3277[lib/setup.c:166] rand seed 1642624035 > > TAP version 13 > > # 3277[lib/proc.c:207] Snmp6 Ip6InReceives: 6 => 31 > > # 3277[lib/proc.c:207] Snmp6 Ip6InDelivers: 4 => 29 > > # 3277[lib/proc.c:207] Snmp6 Ip6OutRequests: 4 => 24 > > # 3277[lib/proc.c:207] Snmp6 Ip6InOctets: 592 => 4492 > > # 3277[lib/proc.c:207] Snmp6 Ip6OutOctets: 332 => 3852 > > # 3277[lib/proc.c:207] Snmp6 Ip6InNoECTPkts: 6 => 31 > > # 3277[lib/proc.c:207] Snmp6 Icmp6InMsgs: 1 => 6 > > # 3277[lib/proc.c:207] Snmp6 Icmp6InDestUnreachs: 0 => 5 > > # 3277[lib/proc.c:207] Snmp6 Icmp6InType1: 0 => 5 > > # 3277[lib/proc.c:207] Tcp InSegs: 3 => 23 > > # 3277[lib/proc.c:207] Tcp OutSegs: 2 => 22 > > # 3277[lib/proc.c:207] TcpExt TCPPureAcks: 1 => 2 > > # 3277[lib/proc.c:207] TcpExt TCPOrigDataSent: 0 => 20 > > # 3277[lib/proc.c:207] TcpExt TCPDelivered: 0 => 19 > > # 3277[lib/proc.c:207] TcpExt TCPAOGood: 3 => 23 > > ok 1 Icmp6InDestUnreachs delivered 5 > > ok 2 server failed with -13: Permission denied > > ok 3 TCPAODroppedIcmps counter didn't change: 0 >= 0 > > # Totals: pass:3 fail:0 xfail:0 xpass:0 skip:0 error:0 > > With some luck the server may fail with ECONNREFUSED (depending on what > icmp packet was delivered firstly). > For the kernel error handlers see: tab_unreach[] and icmp_err_convert[]. > > Signed-off-by: Dmitry Safonov <dima@xxxxxxxxxx> Tested-by: Hangbin Liu <liuhangbin@xxxxxxxxx>
