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staticd: Install SIDs when a dependent interface goes up/down

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Signed-off-by: Yuqing Zhao <galadriel.zyq@alibaba-inc.com>
This commit is contained in:
Yuqing Zhao 2025-01-13 11:04:19 +01:00
parent e80f24df7e
commit 33615773c4
3 changed files with 53 additions and 0 deletions
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40
staticd/static_srv6.c
View file

@ -14,6 +14,7 @@
#include "static_srv6.h" #include "static_srv6.h"
#include "static_vrf.h" #include "static_vrf.h"
#include "static_zebra.h" #include "static_zebra.h"
#include "static_debug.h"
/* /*
* List of SRv6 SIDs. * List of SRv6 SIDs.
@ -24,6 +25,45 @@ struct list *srv6_sids;
DEFINE_MTYPE_STATIC(STATIC, STATIC_SRV6_LOCATOR, "Static SRv6 locator"); DEFINE_MTYPE_STATIC(STATIC, STATIC_SRV6_LOCATOR, "Static SRv6 locator");
DEFINE_MTYPE_STATIC(STATIC, STATIC_SRV6_SID, "Static SRv6 SID"); DEFINE_MTYPE_STATIC(STATIC, STATIC_SRV6_SID, "Static SRv6 SID");
/*
* When an interface is enabled in the kernel, go through all the static SRv6 SIDs in
* the system that use this interface and install/remove them in the zebra RIB.
*
* ifp - The interface being enabled
* is_up - Whether the interface is up or down
*/
void static_ifp_srv6_sids_update(struct interface *ifp, bool is_up)
{
struct static_srv6_sid *sid;
struct listnode *node;
if (!srv6_sids || !ifp)
return;
DEBUGD(&static_dbg_srv6, "%s: Interface %s %s. %s SIDs that depend on the interface",
__func__, (is_up) ? "enabled" : "disabled", (is_up) ? "Removing" : "disabled",
ifp->name);
/*
* iterate over the list of SRv6 SIDs and remove the SIDs that use this
* VRF from the zebra RIB
*/
for (ALL_LIST_ELEMENTS_RO(srv6_sids, node, sid)) {
if ((strcmp(sid->attributes.vrf_name, ifp->name) == 0) ||
(strncmp(ifp->name, DEFAULT_SRV6_IFNAME, sizeof(ifp->name)) == 0 &&
(sid->behavior == SRV6_ENDPOINT_BEHAVIOR_END ||
sid->behavior == SRV6_ENDPOINT_BEHAVIOR_END_NEXT_CSID))) {
if (is_up) {
static_zebra_srv6_sid_install(sid);
SET_FLAG(sid->flags, STATIC_FLAG_SRV6_SID_SENT_TO_ZEBRA);
} else {
static_zebra_srv6_sid_uninstall(sid);
UNSET_FLAG(sid->flags, STATIC_FLAG_SRV6_SID_SENT_TO_ZEBRA);
}
}
}
}
/* /*
* Allocate an SRv6 SID object and initialize the fields common to all the * Allocate an SRv6 SID object and initialize the fields common to all the
* behaviors (i.e., SID address and behavor). * behaviors (i.e., SID address and behavor).

9
staticd/static_srv6.h
View file

@ -85,6 +85,15 @@ extern void static_srv6_init(void);
/* Clean up all the SRv6 data structures. */ /* Clean up all the SRv6 data structures. */
extern void static_srv6_cleanup(void); extern void static_srv6_cleanup(void);
/*
* When an interface is enabled in the kernel, go through all the static SRv6 SIDs in
* the system that use this interface and install/remove them in the zebra RIB.
*
* ifp - The interface being enabled
* is_up - Whether the interface is up or down
*/
void static_ifp_srv6_sids_update(struct interface *ifp, bool is_up);
struct static_srv6_locator *static_srv6_locator_alloc(const char *name); struct static_srv6_locator *static_srv6_locator_alloc(const char *name);
void static_srv6_locator_free(struct static_srv6_locator *locator); void static_srv6_locator_free(struct static_srv6_locator *locator);
struct static_srv6_locator *static_srv6_locator_lookup(const char *name); struct static_srv6_locator *static_srv6_locator_lookup(const char *name);

4
staticd/static_zebra.c
View file

@ -116,6 +116,8 @@ static int static_ifp_up(struct interface *ifp)
{ {
static_ifindex_update(ifp, true); static_ifindex_update(ifp, true);
static_ifp_srv6_sids_update(ifp, true);
return 0; return 0;
} }
@ -123,6 +125,8 @@ static int static_ifp_down(struct interface *ifp)
{ {
static_ifindex_update(ifp, false); static_ifindex_update(ifp, false);
static_ifp_srv6_sids_update(ifp, false);
return 0; return 0;
} }