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rtnlutil: Add IPv6 default route helper

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This commit is contained in:
Tim Kourt 2019-09-27 12:52:28 -07:00 committed by Denis Kenzior
parent f0b3a6cf1d
commit 57095eaa2c
2 changed files with 60 additions and 0 deletions
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53
src/rtnlutil.c
View File

@ -532,3 +532,56 @@ uint32_t rtnl_ifaddr_ipv6_delete(struct l_netlink *rtnl, int ifindex,
return rtnl_ifaddr_ipv6_change(rtnl, RTM_DELADDR, ifindex, prefix_len,
ip, cb, user_data, destroy);
}
uint32_t rtnl_route_ipv6_add_gateway(struct l_netlink *rtnl, int ifindex,
const char *gateway,
uint32_t priority_offset,
uint8_t proto,
l_netlink_command_func_t cb,
void *user_data,
l_netlink_destroy_func_t destroy)
{
L_AUTO_FREE_VAR(struct rtmsg *, rtmmsg) = NULL;
struct in6_addr in6_addr;
size_t bufsize;
void *rta_buf;
uint16_t flags;
if (!gateway)
return 0;
bufsize = NLMSG_ALIGN(sizeof(struct rtmsg)) +
RTA_SPACE(sizeof(uint32_t)) +
(priority_offset ? RTA_SPACE(sizeof(uint32_t)) : 0) +
(gateway ? RTA_SPACE(sizeof(struct in6_addr)) : 0);
rtmmsg = l_malloc(bufsize);
memset(rtmmsg, 0, bufsize);
rtmmsg->rtm_family = AF_INET6;
rtmmsg->rtm_table = RT_TABLE_MAIN;
rtmmsg->rtm_protocol = proto;
rtmmsg->rtm_type = RTN_UNICAST;
rtmmsg->rtm_scope = RT_SCOPE_UNIVERSE;
flags = NLM_F_CREATE | NLM_F_REPLACE;
rta_buf = (void *) rtmmsg + NLMSG_ALIGN(sizeof(struct rtmsg));
rta_buf += rta_add_u32(rta_buf, RTA_OIF, ifindex);
if (priority_offset)
rta_buf += rta_add_u32(rta_buf, RTA_PRIORITY,
priority_offset + ifindex);
if (gateway) {
if (inet_pton(AF_INET6, gateway, &in6_addr) < 1)
return 0;
rta_buf += rta_add_data(rta_buf, RTA_GATEWAY, &in6_addr,
sizeof(struct in6_addr));
}
return l_netlink_send(rtnl, RTM_NEWROUTE, flags, rtmmsg,
rta_buf - (void *) rtmmsg, cb, user_data,
destroy);
}

7
src/rtnlutil.h
View File

@ -83,3 +83,10 @@ uint32_t rtnl_ifaddr_ipv6_delete(struct l_netlink *rtnl, int ifindex,
l_netlink_command_func_t cb,
void *user_data,
l_netlink_destroy_func_t destroy);
uint32_t rtnl_route_ipv6_add_gateway(struct l_netlink *rtnl, int ifindex,
const char *gateway,
uint32_t priority_offset,
uint8_t proto,
l_netlink_command_func_t cb,
void *user_data,
l_netlink_destroy_func_t destroy);