/* Extracts the mac, IPv4 and IPv6 addresses from the
* "nbrec_logical_router_port" parameter 'lrp'. Stores the IPv4 and
* IPv6 addresses in the 'ipv4_addrs' and 'ipv6_addrs' fields of
* 'laddrs', respectively. In addition, a link local IPv6 address
* based on the 'mac' member of 'lrp' is added to the 'ipv6_addrs'
* field.
*
* Return true if a valid 'mac' address is found in 'lrp', false otherwise.
*
* The caller must call destroy_lport_addresses(). */
bool
extract_lrp_networks(const struct nbrec_logical_router_port *lrp,
struct lport_addresses *laddrs)
{
memset(laddrs, 0, sizeof *laddrs);
if (!eth_addr_from_string(lrp->mac, &laddrs->ea)) {
laddrs->ea = eth_addr_zero;
return false;
}
snprintf(laddrs->ea_s, sizeof laddrs->ea_s, ETH_ADDR_FMT,
ETH_ADDR_ARGS(laddrs->ea));
for (int i = 0; i < lrp->n_networks; i++) {
ovs_be32 ip4;
struct in6_addr ip6;
unsigned int plen;
char *error;
error = ip_parse_cidr(lrp->networks[i], &ip4, &plen);
if (!error) {
if (!ip4 || plen == 32) {
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1);
VLOG_WARN_RL(&rl, "bad 'networks' %s", lrp->networks[i]);
continue;
}
add_ipv4_netaddr(laddrs, ip4, plen);
continue;
}
free(error);
error = ipv6_parse_cidr(lrp->networks[i], &ip6, &plen);
if (!error) {
if (plen == 128) {
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1);
VLOG_WARN_RL(&rl, "bad 'networks' %s", lrp->networks[i]);
continue;
}
add_ipv6_netaddr(laddrs, ip6, plen);
} else {
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
VLOG_INFO_RL(&rl, "invalid syntax '%s' in networks",
lrp->networks[i]);
free(error);
}
}
/* Always add the IPv6 link local address. */
struct in6_addr lla;
in6_generate_lla(laddrs->ea, &lla);
add_ipv6_netaddr(laddrs, lla, 64);
return true;
}
/* Extracts the mac, IPv4 and IPv6 addresses from * 'address' which
* should be of the format "MAC [IP1 IP2 ..] .." where IPn should be a
* valid IPv4 or IPv6 address and stores them in the 'ipv4_addrs' and
* 'ipv6_addrs' fields of 'laddrs'. There may be additional content in
* 'address' after "MAC [IP1 IP2 .. ]". The value of 'ofs' that is
* returned indicates the offset where that additional content begins.
*
* Returns true if at least 'MAC' is found in 'address', false otherwise.
*
* The caller must call destroy_lport_addresses(). */
bool
extract_addresses(const char *address, struct lport_addresses *laddrs,
int *ofs)
{
memset(laddrs, 0, sizeof *laddrs);
const char *buf = address;
const char *const start = buf;
int buf_index = 0;
const char *buf_end = buf + strlen(address);
if (!ovs_scan_len(buf, &buf_index, ETH_ADDR_SCAN_FMT,
ETH_ADDR_SCAN_ARGS(laddrs->ea))) {
laddrs->ea = eth_addr_zero;
*ofs = 0;
return false;
}
snprintf(laddrs->ea_s, sizeof laddrs->ea_s, ETH_ADDR_FMT,
ETH_ADDR_ARGS(laddrs->ea));
ovs_be32 ip4;
struct in6_addr ip6;
unsigned int plen;
char *error;
/* Loop through the buffer and extract the IPv4/IPv6 addresses
* and store in the 'laddrs'. Break the loop if invalid data is found.
*/
buf += buf_index;
while (buf < buf_end) {
buf_index = 0;
error = ip_parse_cidr_len(buf, &buf_index, &ip4, &plen);
if (!error) {
add_ipv4_netaddr(laddrs, ip4, plen);
buf += buf_index;
continue;
}
free(error);
error = ipv6_parse_cidr_len(buf, &buf_index, &ip6, &plen);
if (!error) {
add_ipv6_netaddr(laddrs, ip6, plen);
} else {
free(error);
break;
}
buf += buf_index;
}
*ofs = buf - start;
return true;
}
/* Extracts the mac, IPv4 and IPv6 addresses from * 'address' which
* should be of the format 'MAC [IP1 IP2 ..]" where IPn should be a
* valid IPv4 or IPv6 address and stores them in the 'ipv4_addrs' and
* 'ipv6_addrs' fields of 'laddrs'.
*
* Return true if at least 'MAC' is found in 'address', false otherwise.
*
* The caller must call destroy_lport_addresses(). */
bool
extract_lsp_addresses(const char *address, struct lport_addresses *laddrs)
{
memset(laddrs, 0, sizeof *laddrs);
const char *buf = address;
int buf_index = 0;
const char *buf_end = buf + strlen(address);
if (!ovs_scan_len(buf, &buf_index, ETH_ADDR_SCAN_FMT,
ETH_ADDR_SCAN_ARGS(laddrs->ea))) {
laddrs->ea = eth_addr_zero;
return false;
}
snprintf(laddrs->ea_s, sizeof laddrs->ea_s, ETH_ADDR_FMT,
ETH_ADDR_ARGS(laddrs->ea));
ovs_be32 ip4;
struct in6_addr ip6;
unsigned int plen;
char *error;
/* Loop through the buffer and extract the IPv4/IPv6 addresses
* and store in the 'laddrs'. Break the loop if invalid data is found.
*/
buf += buf_index;
while (buf < buf_end) {
buf_index = 0;
error = ip_parse_cidr_len(buf, &buf_index, &ip4, &plen);
if (!error) {
add_ipv4_netaddr(laddrs, ip4, plen);
buf += buf_index;
continue;
}
free(error);
error = ipv6_parse_cidr_len(buf, &buf_index, &ip6, &plen);
if (!error) {
add_ipv6_netaddr(laddrs, ip6, plen);
} else {
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
VLOG_INFO_RL(&rl, "invalid syntax '%s' in address", address);
free(error);
break;
}
buf += buf_index;
}
return true;
}
