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[FRR]: Verifying static SRv6 SIDs parameters #21467

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Merged
lguohan merged 1 commit into from
Jan 21, 2025
Merged

[FRR]: Verifying static SRv6 SIDs parameters #21467

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44 changes: 20 additions & 24 deletions src/sonic-frr/dplane_fpm_sonic/dplane_fpm_sonic.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1035,33 +1035,29 @@ static ssize_t netlink_srv6_localsid_msg_encode(int cmd,
nl_attr_nest(&req->n, datalen,
FPM_SRV6_LOCALSID_FORMAT);

if (nexthop->nh_srv6->seg6local_ctx.block_len)
if (!nl_attr_put8(
&req->n, datalen,
FPM_SRV6_LOCALSID_FORMAT_BLOCK_LEN,
nexthop->nh_srv6->seg6local_ctx.block_len))
return -1;
if (!nl_attr_put8(
&req->n, datalen,
FPM_SRV6_LOCALSID_FORMAT_BLOCK_LEN,
nexthop->nh_srv6->seg6local_ctx.block_len))
return -1;

if (nexthop->nh_srv6->seg6local_ctx.node_len)
if (!nl_attr_put8(
&req->n, datalen,
FPM_SRV6_LOCALSID_FORMAT_NODE_LEN,
nexthop->nh_srv6->seg6local_ctx.node_len))
return -1;
if (!nl_attr_put8(
&req->n, datalen,
FPM_SRV6_LOCALSID_FORMAT_NODE_LEN,
nexthop->nh_srv6->seg6local_ctx.node_len))
return -1;

if (nexthop->nh_srv6->seg6local_ctx.function_len)
if (!nl_attr_put8(
&req->n, datalen,
FPM_SRV6_LOCALSID_FORMAT_FUNC_LEN,
nexthop->nh_srv6->seg6local_ctx.function_len))
return -1;
if (!nl_attr_put8(
&req->n, datalen,
FPM_SRV6_LOCALSID_FORMAT_FUNC_LEN,
nexthop->nh_srv6->seg6local_ctx.function_len))
return -1;

if (nexthop->nh_srv6->seg6local_ctx.argument_len)
if (!nl_attr_put8(
&req->n, datalen,
FPM_SRV6_LOCALSID_FORMAT_ARG_LEN,
nexthop->nh_srv6->seg6local_ctx.argument_len))
return -1;
if (!nl_attr_put8(
&req->n, datalen,
FPM_SRV6_LOCALSID_FORMAT_ARG_LEN,
nexthop->nh_srv6->seg6local_ctx.argument_len))
return -1;

nl_attr_nest_end(&req->n, nest);

Expand Down
82 changes: 72 additions & 10 deletions src/sonic-frr/patch/0079-staticd-add-support-for-srv6.patch
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -14,7 +14,7 @@ Signed-off-by: Carmine Scarpitta <[email protected]>
staticd/static_srv6.h | 125 ++++
staticd/static_vrf.c | 2 +
staticd/static_vty.c | 320 +++++++++
staticd/static_zebra.c | 636 ++++++++++++++++++
staticd/static_zebra.c | 698 ++++++++++++++++++
staticd/static_zebra.h | 12 +-
staticd/subdir.am | 2 +
tests/topotests/static_srv6_sids/__init__.py | 0
Expand Down Expand Up @@ -1136,7 +1136,7 @@ index d76befc131..f86fd3b48a 100644
return 0;
}

@@ -530,10 +537,639 @@ extern void static_zebra_route_add(struct static_path *pn, bool install)
@@ -529,10 +536,701 @@ extern void static_zebra_route_add(struct static_path *pn, bool install)
zclient, &api);
}

Expand Down Expand Up @@ -1218,6 +1218,9 @@ index d76befc131..f86fd3b48a 100644
+ struct seg6local_context ctx = {};
+ struct interface *ifp = NULL;
+ struct vrf *vrf;
+ struct prefix_ipv6 sid_block = {};
+ struct prefix_ipv6 locator_block = {};
+ struct prefix_ipv6 sid_locator = {};
+
+ if (!sid)
+ return;
Expand Down Expand Up @@ -1291,10 +1294,38 @@ index d76befc131..f86fd3b48a 100644
+ break;
+ }
+
+ ctx.block_len = sid->locator->block_bits_length;
+ ctx.node_len = sid->locator->node_bits_length;
+ ctx.function_len = sid->locator->function_bits_length;
+ ctx.argument_len = sid->locator->argument_bits_length;
+ ctx.block_len = 0;
+ ctx.node_len = 0;
+ ctx.function_len = 0;
+ ctx.argument_len = 0;
+
+ sid_block = sid->addr;
+ sid_block.prefixlen = sid->locator->block_bits_length;
+ apply_mask(&sid_block);
+
+ locator_block = sid->locator->prefix;
+ locator_block.prefixlen = sid->locator->block_bits_length;
+ apply_mask(&locator_block);
+
+ if (prefix_same(&sid_block, &locator_block))
+ ctx.block_len = sid->locator->block_bits_length;
+ else {
+ zlog_warn("SID block %pFX does not match locator block %pFX", &sid_block, &locator_block);
+ return;
+ }
+
+ sid_locator = sid->addr;
+ sid_locator.prefixlen = sid->locator->block_bits_length + sid->locator->node_bits_length;
+ apply_mask(&sid_locator);
+
+ if (prefix_same(&sid_locator, &sid->locator->prefix))
+ ctx.node_len = sid->locator->node_bits_length;
+ else {
+ zlog_warn("SID locator %pFX does not match the specified locator %pFX", &sid_locator, &sid->locator->prefix);
+ return;
+ }
+
+ ctx.function_len = sid->addr.prefixlen - (ctx.block_len + ctx.node_len);
+
+ /* Attach the SID to the SRv6 interface */
+ if (!ifp) {
Expand All @@ -1318,6 +1349,9 @@ index d76befc131..f86fd3b48a 100644
+ struct interface *ifp = NULL;
+ struct seg6local_context ctx = {};
+ struct vrf *vrf;
+ struct prefix_ipv6 sid_block = {};
+ struct prefix_ipv6 locator_block = {};
+ struct prefix_ipv6 sid_locator = {};
+
+ if (!sid)
+ return;
Expand Down Expand Up @@ -1387,10 +1421,38 @@ index d76befc131..f86fd3b48a 100644
+ }
+ }
+
+ ctx.block_len = sid->locator->block_bits_length;
+ ctx.node_len = sid->locator->node_bits_length;
+ ctx.function_len = sid->locator->function_bits_length;
+ ctx.argument_len = sid->locator->argument_bits_length;
+ ctx.block_len = 0;
+ ctx.node_len = 0;
+ ctx.function_len = 0;
+ ctx.argument_len = 0;
+
+ sid_block = sid->addr;
+ sid_block.prefixlen = sid->locator->block_bits_length;
+ apply_mask(&sid_block);
+
+ locator_block = sid->locator->prefix;
+ locator_block.prefixlen = sid->locator->block_bits_length;
+ apply_mask(&locator_block);
+
+ if (prefix_same(&sid_block, &locator_block))
+ ctx.block_len = sid->locator->block_bits_length;
+ else {
+ zlog_warn("SID block %pFX does not match locator block %pFX", &sid_block, &locator_block);
+ return;
+ }
+
+ sid_locator = sid->addr;
+ sid_locator.prefixlen = sid->locator->block_bits_length + sid->locator->node_bits_length;
+ apply_mask(&sid_locator);
+
+ if (prefix_same(&sid_locator, &sid->locator->prefix))
+ ctx.node_len = sid->locator->node_bits_length;
+ else {
+ zlog_warn("SID locator %pFX does not match the specified locator %pFX", &sid_locator, &sid->locator->prefix);
+ return;
+ }
+
+ ctx.function_len = sid->addr.prefixlen - (ctx.block_len + ctx.node_len);
+
+ zlog_info("delete SID %pFX",
+ &sid->addr);
Expand Down