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[SRv6]: SRv6 VPN SID #2793

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[SRv6]: SRv6 VPN SID #2793

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8e3e7bf
srv6 vpn
shuaishang May 25, 2023
c2b80de
addressing review comment
shuaishang Jun 25, 2023
3d95cad
Merge branch 'sonic-net:master' into srv6_vpn
shuaishang Jun 25, 2023
e74bc24
addressing review comment
shuaishang Jun 25, 2023
4da302a
The key of Srv6PrefixAggIdTable should be NextHopGroupKey instead of …
shuaishang Jun 25, 2023
4307304
Merge branch 'sonic-net:master' into srv6_vpn
shuaishang Sep 8, 2023
728cec5
swss UTs for srv6 vpn functions
shuaishang May 8, 2023
ad303ea
Merge branch 'master' into srv6_vpn
prsunny Nov 2, 2023
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31 changes: 30 additions & 1 deletion orchagent/nexthopgroupkey.h
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@ class NextHopGroupKey
{
m_overlay_nexthops = false;
m_srv6_nexthops = false;
m_srv6_vpn = false;
auto nhv = tokenize(nexthops, NHG_DELIMITER);
for (const auto &nh : nhv)
{
Expand All @@ -21,12 +22,13 @@ class NextHopGroupKey
}

/* ip_string|if_alias|vni|router_mac separated by ',' */
NextHopGroupKey(const std::string &nexthops, bool overlay_nh, bool srv6_nh = false)
NextHopGroupKey(const std::string &nexthops, bool overlay_nh, bool srv6_nh = false, bool srv6_vpn = false)
{
if (overlay_nh)
{
m_overlay_nexthops = true;
m_srv6_nexthops = false;
m_srv6_vpn = false;
auto nhv = tokenize(nexthops, NHG_DELIMITER);
for (const auto &nh_str : nhv)
{
Expand All @@ -38,6 +40,9 @@ class NextHopGroupKey
{
m_overlay_nexthops = false;
m_srv6_nexthops = true;
m_srv6_vpn = srv6_vpn;
m_srv6_str = nexthops;

auto nhv = tokenize(nexthops, NHG_DELIMITER);
for (const auto &nh_str : nhv)
{
Expand All @@ -47,10 +52,12 @@ class NextHopGroupKey
}
}


NextHopGroupKey(const std::string &nexthops, const std::string &weights)
{
m_overlay_nexthops = false;
m_srv6_nexthops = false;
m_srv6_vpn = false;
std::vector<std::string> nhv = tokenize(nexthops, NHG_DELIMITER);
std::vector<std::string> wtv = tokenize(weights, NHG_DELIMITER);
bool set_weight = wtv.size() == nhv.size();
Expand All @@ -74,6 +81,11 @@ class NextHopGroupKey

inline bool operator<(const NextHopGroupKey &o) const
{
if (m_srv6_nexthops)
{
return m_srv6_str < o.m_srv6_str;
}

if (m_nexthops < o.m_nexthops)
{
return true;
Expand Down Expand Up @@ -193,6 +205,9 @@ class NextHopGroupKey

const std::string to_string() const
{
if (m_srv6_nexthops) {
return m_srv6_str;
}
string nhs_str;

for (auto it = m_nexthops.begin(); it != m_nexthops.end(); ++it)
Expand Down Expand Up @@ -221,6 +236,17 @@ class NextHopGroupKey
return m_srv6_nexthops;
}

inline bool is_srv6_vpn() const
{
return m_srv6_vpn;
}

inline string get_srv6_vpn_key() const
{
// use nexthopgroupkey as vpn key
return m_srv6_str;
}

void clear()
{
m_nexthops.clear();
Expand All @@ -230,6 +256,9 @@ class NextHopGroupKey
std::set<NextHopKey> m_nexthops;
bool m_overlay_nexthops;
bool m_srv6_nexthops;

string m_srv6_str;
bool m_srv6_vpn;
};

#endif /* SWSS_NEXTHOPGROUPKEY_H */
64 changes: 50 additions & 14 deletions orchagent/nexthopkey.h
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Original file line number Diff line number Diff line change
Expand Up @@ -22,18 +22,33 @@ struct NextHopKey
uint32_t weight; // NH weight for NHGs
string srv6_segment; // SRV6 segment string
string srv6_source; // SRV6 source address
string srv6_vpn_sid; // SRV6 vpn sid

NextHopKey() : weight(0) {}
NextHopKey() : weight(0),
srv6_vpn_sid(""),
srv6_source(""),
srv6_segment("")
{}
NextHopKey(const std::string &str, const std::string &alias) :
alias(alias), vni(0), mac_address(), weight(0)
alias(alias), vni(0), mac_address(), weight(0),
srv6_vpn_sid(""),
srv6_source(""),
srv6_segment("")
{
std::string ip_str = parseMplsNextHop(str);
ip_address = ip_str;
}
NextHopKey(const IpAddress &ip, const std::string &alias) :
ip_address(ip), alias(alias), vni(0), mac_address(), weight(0) {}
ip_address(ip), alias(alias), vni(0), mac_address(), weight(0),
srv6_vpn_sid(""),
srv6_source(""),
srv6_segment("")
{}
NextHopKey(const std::string &str) :
vni(0), mac_address()
vni(0), mac_address(),
srv6_vpn_sid(""),
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can we move the vpn_sid to the end of NH key without affecting the non-VPN NH key?

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It will not affect non-VPN NH key, however I moved srv6_vpn_sid to end of NH key.

srv6_source(""),
srv6_segment("")
{
if (str.find(NHG_DELIMITER) != string::npos)
{
Expand Down Expand Up @@ -74,16 +89,16 @@ struct NextHopKey
{
weight = 0;
vni = 0;
weight = 0;
auto keys = tokenize(str, NH_DELIMITER);
if (keys.size() != 3)
if (keys.size() != 4)
{
std::string err = "Error converting " + str + " to Nexthop";
throw std::invalid_argument(err);
}
ip_address = keys[0];
srv6_segment = keys[1];
srv6_vpn_sid = keys[1];
srv6_source = keys[2];
srv6_segment = keys[3];
}
else
{
Expand All @@ -99,10 +114,22 @@ struct NextHopKey
vni = static_cast<uint32_t>(std::stoul(keys[2]));
mac_address = keys[3];
weight = 0;
srv6_vpn_sid = "";
srv6_source = "";
srv6_segment = "";
}
}

NextHopKey(const IpAddress &ip, const MacAddress &mac, const uint32_t &vni, bool overlay_nh) : ip_address(ip), alias(""), vni(vni), mac_address(mac), weight(0){}
NextHopKey(const IpAddress &ip, const MacAddress &mac, const uint32_t &vni, bool overlay_nh) :
ip_address(ip),
alias(""),
vni(vni),
mac_address(mac),
weight(0),
srv6_vpn_sid(""),
srv6_source(""),
srv6_segment("")
{}

const std::string to_string() const
{
Expand All @@ -111,11 +138,14 @@ struct NextHopKey
return str;
}

const std::string to_string(bool overlay_nh, bool srv6_nh) const
const std::string to_string(bool overlay_nh, bool srv6_nh = false) const
{
if (srv6_nh)
{
return ip_address.to_string() + NH_DELIMITER + srv6_segment + NH_DELIMITER + srv6_source;
return ip_address.to_string() + NH_DELIMITER +
srv6_vpn_sid + NH_DELIMITER +
srv6_source + NH_DELIMITER +
srv6_segment + NH_DELIMITER;
}
std::string str = formatMplsNextHop();
str += (ip_address.to_string() + NH_DELIMITER + alias + NH_DELIMITER +
Expand All @@ -125,16 +155,17 @@ struct NextHopKey

bool operator<(const NextHopKey &o) const
{
return tie(ip_address, alias, label_stack, vni, mac_address, srv6_segment, srv6_source) <
tie(o.ip_address, o.alias, o.label_stack, o.vni, o.mac_address, o.srv6_segment, o.srv6_source);
return tie(ip_address, alias, label_stack, vni, mac_address, srv6_segment, srv6_source, srv6_vpn_sid) <
tie(o.ip_address, o.alias, o.label_stack, o.vni, o.mac_address, o.srv6_segment, o.srv6_source, o.srv6_vpn_sid);
}

bool operator==(const NextHopKey &o) const
{
return (ip_address == o.ip_address) && (alias == o.alias) &&
(label_stack == o.label_stack) &&
(vni == o.vni) && (mac_address == o.mac_address) &&
(srv6_segment == o.srv6_segment) && (srv6_source == o.srv6_source);
(srv6_segment == o.srv6_segment) && (srv6_source == o.srv6_source) &&
(srv6_vpn_sid == o.srv6_vpn_sid);
}

bool operator!=(const NextHopKey &o) const
Expand All @@ -154,7 +185,12 @@ struct NextHopKey

bool isSrv6NextHop() const
{
return (srv6_segment != "");
return ((srv6_segment != "") || (srv6_vpn_sid != ""));
}

bool isSrv6Vpn() const
{
return (srv6_vpn_sid != "");
}

std::string parseMplsNextHop(const std::string& str)
Expand Down
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