bgpd: [5.0] Add peer action for PEER_FLAG_IFPEER_V6ONLY flag

[ton31337]

peer_flag_modify() will always return BGP_ERR_INVALID_FLAG because
the action was not defined for PEER_FLAG_IFPEER_V6ONLY flag.

global PEER_FLAG_IFPEER_V6ONLY = 16384;
global BGP_ERR_INVALID_FLAG = -2;

probe process("/usr/lib/frr/bgpd").statement("peer_flag_modify@/root/frr/bgpd/bgpd.c:3975")
{
	if ($flag == PEER_FLAG_IFPEER_V6ONLY && $action->type == 0)
		printf("action not found for the flag PEER_FLAG_IFPEER_V6ONLY\n");
}

probe process("/usr/lib/frr/bgpd").function("peer_flag_modify").return
{
	if ($return == BGP_ERR_INVALID_FLAG)
		printf("return BGP_ERR_INVALID_FLAG\n");
}

produces:
action not found for the flag PEER_FLAG_IFPEER_V6ONLY
return BGP_ERR_INVALID_FLAG

$ vtysh -c 'conf t' -c 'router bgp 20' -c 'neighbor eth1 interface v6only remote-as external'

Signed-off-by: Donatas Abraitis donatas.abraitis@gmail.com

[NetDEF-CI]

Continuous Integration Result: SUCCESSFUL

Congratulations, this patch passed basic tests

Tested-by: NetDEF / OpenSourceRouting.org CI System

CI System Testrun URL: https://ci1.netdef.org/browse/FRR-FRRPULLREQ-7253/

This is a comment from an automated CI system.
For questions and feedback in regards to this CI system, please feel free to email
Martin Winter - mwinter (at) opensourcerouting.org.

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CLANG Static Analyzer Summary

• Github Pull Request 4146, comparing to Git base SHA 8865204
• Base image data for Git 8865204 does not exist - compare skipped

82 Static Analyzer issues remaining.

See details at
https://ci1.netdef.org/browse/FRR-FRRPULLREQ-7253/artifact/shared/static_analysis/index.html