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zebra: Fix route deletion on *BSD

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Fix for not handling RTM_CHANGE correctly.  This patch change it to
delete/add instead.  Using RTM_CHANGE on kernels where it works is better,
but is left as an exercise for developer who has access and will to fix it
on *BSD.

[ed note: collaboration with Martin Winter]
This commit is contained in:
Timo Teräs 2016-02-18 18:19:54 -08:00 committed by Donald Sharp
parent be717a0af8
commit 62ccf1e5a3
1 changed files with 21 additions and 22 deletions
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43
zebra/rt_socket.c
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@ -73,7 +73,7 @@ sin_masklen (struct in_addr mask)
/* Interface between zebra message and rtm message. */
static int
kernel_rtm_ipv4 (int cmd, struct prefix *p, struct rib *rib, int family)
kernel_rtm_ipv4 (int cmd, struct prefix *p, struct rib *rib)
{
struct sockaddr_in *mask = NULL;
@ -264,7 +264,7 @@ sin6_masklen (struct in6_addr mask)
/* Interface between zebra message and rtm message. */
static int
kernel_rtm_ipv6 (int cmd, struct prefix *p, struct rib *rib, int family)
kernel_rtm_ipv6 (int cmd, struct prefix *p, struct rib *rib)
{
struct sockaddr_in6 *mask;
struct sockaddr_in6 sin_dest, sin_mask, sin_gate;
@ -378,33 +378,32 @@ kernel_rtm_ipv6 (int cmd, struct prefix *p, struct rib *rib, int family)
return 0; /*XXX*/
}
static int
kernel_rtm (int cmd, struct prefix *p, struct rib *rib)
{
switch (PREFIX_FAMILY(p))
{
case AF_INET:
return kernel_rtm_ipv4 (cmd, p, rib);
case AF_INET6:
return kernel_rtm_ipv6 (cmd, p, rib);
}
return 0;
}
int
kernel_route_rib (struct prefix *p, struct rib *old, struct rib *new)
{
struct rib *rib;
int route = 0, cmd;
if (!old && new)
cmd = RTM_ADD;
else if (old && !new)
cmd = RTM_DELETE;
else
cmd = RTM_CHANGE;
rib = new ? new : old;
int route = 0;
if (zserv_privs.change(ZPRIVS_RAISE))
zlog (NULL, LOG_ERR, "Can't raise privileges");
switch (PREFIX_FAMILY(p))
{
case AF_INET:
route = kernel_rtm_ipv4 (cmd, p, rib, AF_INET);
break;
case AF_INET6:
route = kernel_rtm_ipv6 (cmd, p, rib, AF_INET6);
break;
}
if (old)
route |= kernel_rtm (RTM_DELETE, p, old);
if (new)
route |= kernel_rtm (RTM_ADD, p, new);
if (zserv_privs.change(ZPRIVS_LOWER))
zlog (NULL, LOG_ERR, "Can't lower privileges");