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rtnlutil: Add IPv6 address change helpers

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Implements the IPv6 helper functions to add/delete IP addresses.
This commit is contained in:
Tim Kourt 2019-09-27 12:52:26 -07:00 committed by Denis Kenzior
parent e3e569b75b
commit f0b3a6cf1d
2 changed files with 72 additions and 0 deletions
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63
src/rtnlutil.c
View File

@ -469,3 +469,66 @@ uint32_t rtnl_ifaddr_ipv6_get(struct l_netlink *rtnl,
return id;
}
static uint32_t rtnl_ifaddr_ipv6_change(struct l_netlink *rtnl,
uint16_t nlmsg_type,
int ifindex, uint8_t prefix_len,
const char *ip,
l_netlink_command_func_t cb,
void *user_data,
l_netlink_destroy_func_t destroy)
{
struct ifaddrmsg *rtmmsg;
struct in6_addr in6_addr;
void *rta_buf;
size_t bufsize;
uint32_t id;
bufsize = NLMSG_ALIGN(sizeof(struct ifaddrmsg)) +
RTA_SPACE(sizeof(struct in6_addr));
rtmmsg = l_malloc(bufsize);
memset(rtmmsg, 0, bufsize);
rtmmsg->ifa_index = ifindex;
rtmmsg->ifa_family = AF_INET6;
rtmmsg->ifa_flags = IFA_F_PERMANENT;
rtmmsg->ifa_scope = RT_SCOPE_UNIVERSE;
rtmmsg->ifa_prefixlen = prefix_len;
rta_buf = (void *) rtmmsg + NLMSG_ALIGN(sizeof(struct ifaddrmsg));
if (inet_pton(AF_INET6, ip, &in6_addr) < 1) {
l_free(rtmmsg);
return 0;
}
rta_buf += rta_add_data(rta_buf, IFA_LOCAL, &in6_addr,
sizeof(struct in6_addr));
id = l_netlink_send(rtnl, nlmsg_type, 0, rtmmsg,
rta_buf - (void *) rtmmsg, cb,
user_data, destroy);
l_free(rtmmsg);
return id;
}
uint32_t rtnl_ifaddr_ipv6_add(struct l_netlink *rtnl, int ifindex,
uint8_t prefix_len, const char *ip,
l_netlink_command_func_t cb, void *user_data,
l_netlink_destroy_func_t destroy)
{
return rtnl_ifaddr_ipv6_change(rtnl, RTM_NEWADDR, ifindex, prefix_len,
ip, cb, user_data, destroy);
}
uint32_t rtnl_ifaddr_ipv6_delete(struct l_netlink *rtnl, int ifindex,
uint8_t prefix_len, const char *ip,
l_netlink_command_func_t cb,
void *user_data,
l_netlink_destroy_func_t destroy)
{
return rtnl_ifaddr_ipv6_change(rtnl, RTM_DELADDR, ifindex, prefix_len,
ip, cb, user_data, destroy);
}

9
src/rtnlutil.h
View File

@ -74,3 +74,12 @@ uint32_t rtnl_ifaddr_ipv6_get(struct l_netlink *rtnl,
l_netlink_command_func_t cb,
void *user_data,
l_netlink_destroy_func_t destroy);
uint32_t rtnl_ifaddr_ipv6_add(struct l_netlink *rtnl, int ifindex,
uint8_t prefix_len, const char *ip,
l_netlink_command_func_t cb, void *user_data,
l_netlink_destroy_func_t destroy);
uint32_t rtnl_ifaddr_ipv6_delete(struct l_netlink *rtnl, int ifindex,
uint8_t prefix_len, const char *ip,
l_netlink_command_func_t cb,
void *user_data,
l_netlink_destroy_func_t destroy);