diff options
Diffstat (limited to 'lib/route/link/inet6.c')
| -rw-r--r-- | lib/route/link/inet6.c | 109 |
1 files changed, 102 insertions, 7 deletions
diff --git a/lib/route/link/inet6.c b/lib/route/link/inet6.c index feb0226..0f096fc 100644 --- a/lib/route/link/inet6.c +++ b/lib/route/link/inet6.c @@ -15,16 +15,25 @@ #include <netlink/route/rtnl.h> #include <netlink-private/route/link/api.h> +#define I6_ADDR_GEN_MODE_UNKNOWN UINT8_MAX + struct inet6_data { uint32_t i6_flags; struct ifla_cacheinfo i6_cacheinfo; uint32_t i6_conf[DEVCONF_MAX]; + uint8_t i6_addr_gen_mode; }; static void *inet6_alloc(struct rtnl_link *link) { - return calloc(1, sizeof(struct inet6_data)); + struct inet6_data *i6; + + i6 = calloc(1, sizeof(struct inet6_data)); + if (i6) + i6->i6_addr_gen_mode = I6_ADDR_GEN_MODE_UNKNOWN; + + return i6; } static void *inet6_clone(struct rtnl_link *link, void *data) @@ -43,11 +52,12 @@ static void inet6_free(struct rtnl_link *link, void *data) } static struct nla_policy inet6_policy[IFLA_INET6_MAX+1] = { - [IFLA_INET6_FLAGS] = { .type = NLA_U32 }, - [IFLA_INET6_CACHEINFO] = { .minlen = sizeof(struct ifla_cacheinfo) }, - [IFLA_INET6_CONF] = { .minlen = 4 }, - [IFLA_INET6_STATS] = { .minlen = 8 }, - [IFLA_INET6_ICMP6STATS] = { .minlen = 8 }, + [IFLA_INET6_FLAGS] = { .type = NLA_U32 }, + [IFLA_INET6_CACHEINFO] = { .minlen = sizeof(struct ifla_cacheinfo) }, + [IFLA_INET6_CONF] = { .minlen = 4 }, + [IFLA_INET6_STATS] = { .minlen = 8 }, + [IFLA_INET6_ICMP6STATS] = { .minlen = 8 }, + [IFLA_INET6_ADDR_GEN_MODE] = { .type = NLA_U8 }, }; static const uint8_t map_stat_id_from_IPSTATS_MIB_v1[__IPSTATS_MIB_MAX] = { @@ -155,7 +165,10 @@ static int inet6_parse_protinfo(struct rtnl_link *link, struct nlattr *attr, if (tb[IFLA_INET6_CONF]) nla_memcpy(&i6->i6_conf, tb[IFLA_INET6_CONF], sizeof(i6->i6_conf)); - + + if (tb[IFLA_INET6_ADDR_GEN_MODE]) + i6->i6_addr_gen_mode = nla_get_u8 (tb[IFLA_INET6_ADDR_GEN_MODE]); + /* * Due to 32bit data alignment, these addresses must be copied to an * aligned location prior to access. @@ -200,6 +213,19 @@ static int inet6_parse_protinfo(struct rtnl_link *link, struct nlattr *attr, return 0; } +static int inet6_fill_af(struct rtnl_link *link, struct nl_msg *msg, void *data) +{ + struct inet6_data *id = data; + + if (id->i6_addr_gen_mode != I6_ADDR_GEN_MODE_UNKNOWN) + NLA_PUT_U8(msg, IFLA_INET6_ADDR_GEN_MODE, id->i6_addr_gen_mode); + + return 0; + +nla_put_failure: + return -NLE_MSGSIZE; +} + /* These live in include/net/if_inet6.h and should be moved to include/linux */ #define IF_RA_OTHERCONF 0x80 #define IF_RA_MANAGED 0x40 @@ -259,6 +285,22 @@ static char *inet6_devconf2str(int type, char *buf, size_t len) ARRAY_SIZE(inet6_devconf)); } +static const struct trans_tbl inet6_addr_gen_mode[] = { + __ADD(IN6_ADDR_GEN_MODE_EUI64, eui64), + __ADD(IN6_ADDR_GEN_MODE_NONE, none), +}; + +const char *rtnl_link_inet6_addrgenmode2str(uint8_t mode, char *buf, size_t len) +{ + return __type2str(mode, buf, len, inet6_addr_gen_mode, + ARRAY_SIZE(inet6_addr_gen_mode)); +} + +uint8_t rtnl_link_inet6_str2addrgenmode(const char *mode) +{ + return (uint8_t) __str2type(mode, inet6_addr_gen_mode, + ARRAY_SIZE(inet6_addr_gen_mode)); +} static void inet6_dump_details(struct rtnl_link *link, struct nl_dump_params *p, void *data) @@ -281,6 +323,10 @@ static void inet6_dump_details(struct rtnl_link *link, nl_dump(p, " retrans-time %s\n", nl_msec2str(i6->i6_cacheinfo.retrans_time, buf, sizeof(buf))); + nl_dump(p, " link-local address mode %s\n", + rtnl_link_inet6_addrgenmode2str(i6->i6_addr_gen_mode, + buf, sizeof(buf))); + nl_dump_line(p, " devconf:\n"); nl_dump_line(p, " "); @@ -468,11 +514,60 @@ static struct rtnl_link_af_ops inet6_ops = { .ao_free = &inet6_free, .ao_parse_protinfo = &inet6_parse_protinfo, .ao_parse_af = &inet6_parse_protinfo, + .ao_fill_af = &inet6_fill_af, .ao_dump[NL_DUMP_DETAILS] = &inet6_dump_details, .ao_dump[NL_DUMP_STATS] = &inet6_dump_stats, .ao_protinfo_policy = &protinfo_policy, }; +/** + * Get IPv6 link-local address generation mode + * @arg link Link object + * @arg mode Generation mode on success + * + * Returns the link's IPv6 link-local address generation mode. + * + * @return 0 on success + * @return -NLE_NOATTR configuration setting not available + * @return -NLE_INVAL generation mode unknown. If the link was received via + * netlink, it means that address generation mode is not + * supported by the kernel. + */ +int rtnl_link_inet6_get_addr_gen_mode(struct rtnl_link *link, uint8_t *mode) +{ + struct inet6_data *id; + + if (!(id = rtnl_link_af_data(link, &inet6_ops))) + return -NLE_NOATTR; + + if (id->i6_addr_gen_mode == I6_ADDR_GEN_MODE_UNKNOWN) + return -NLE_INVAL; + + *mode = id->i6_addr_gen_mode; + return 0; +} + +/** + * Set IPv6 link-local address generation mode + * @arg link Link object + * @arg mode Generation mode + * + * Sets the link's IPv6 link-local address generation mode. + * + * @return 0 on success + * @return -NLE_NOMEM could not allocate inet6 data + */ +int rtnl_link_inet6_set_addr_gen_mode(struct rtnl_link *link, uint8_t mode) +{ + struct inet6_data *id; + + if (!(id = rtnl_link_af_alloc(link, &inet6_ops))) + return -NLE_NOMEM; + + id->i6_addr_gen_mode = mode; + return 0; +} + static void __init inet6_init(void) { rtnl_link_af_register(&inet6_ops); |