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pimd: Pim hello should be sent with 0 hold time on address change on old src ip

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RCA: This was todo item in current code base

Fix: Hello sent with 0 hold time before we update the pim ifp primary address

Signed-off-by: Saravanan K <saravanank@vmware.com>
This commit is contained in:
saravanank 2020-03-19 03:06:46 -07:00
parent 7f2ccbe562
commit b279f95c70
3 changed files with 7 additions and 3 deletions
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6
pimd/pim_iface.c
View File

@ -275,7 +275,7 @@ static void pim_addr_change(struct interface *ifp)
1) Before an interface goes down or changes primary IP address, a
Hello message with a zero HoldTime should be sent immediately
(with the old IP address if the IP address changed).
-- FIXME See CAVEAT C13
-- Done at the caller of the function as new ip already updated here
2) After an interface has changed its IP address, it MUST send a
Hello message with its new IP address.
@ -320,6 +320,10 @@ static int detect_primary_address_change(struct interface *ifp,
}
if (changed) {
/* Before updating pim_ifp send Hello time with 0 hold time */
if (PIM_IF_TEST_PIM(pim_ifp->options)) {
pim_hello_send(ifp, 0 /* zero-sec holdtime */);
}
pim_ifp->primary_address = new_prim_addr;
}

3
pimd/pim_pim.c
View File

@ -42,7 +42,6 @@
#include "pim_bsm.h"
static int on_pim_hello_send(struct thread *t);
static int pim_hello_send(struct interface *ifp, uint16_t holdtime);
static const char *pim_pim_msgtype2str(enum pim_msg_type type)
{
@ -662,7 +661,7 @@ static int hello_send(struct interface *ifp, uint16_t holdtime)
return 0;
}
static int pim_hello_send(struct interface *ifp, uint16_t holdtime)
int pim_hello_send(struct interface *ifp, uint16_t holdtime)
{
struct pim_interface *pim_ifp = ifp->info;

1
pimd/pim_pim.h
View File

@ -59,4 +59,5 @@ int pim_pim_packet(struct interface *ifp, uint8_t *buf, size_t len);
int pim_msg_send(int fd, struct in_addr src, struct in_addr dst,
uint8_t *pim_msg, int pim_msg_size, const char *ifname);
int pim_hello_send(struct interface *ifp, uint16_t holdtime);
#endif /* PIM_PIM_H */