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Code

sd-netlink: add support for address label

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This commit is contained in:
Susant Sahani 2017-04-25 16:06:12 +05:30
parent 6385cb31ef
commit 30746d6088
4 changed files with 76 additions and 15 deletions
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44
src/libsystemd/sd-netlink/netlink-types.c
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@ -26,6 +26,7 @@
#include <linux/veth.h>
#include <linux/if_bridge.h>
#include <linux/if_addr.h>
#include <linux/if_addrlabel.h>
#include <linux/if.h>
#include <linux/ip.h>
#include <linux/if_link.h>
@ -586,22 +587,35 @@ static const NLTypeSystem rtnl_neigh_type_system = {
.types = rtnl_neigh_types,
};
static const NLType rtnl_addrlabel_types[] = {
[IFAL_ADDRESS] = { .type = NETLINK_TYPE_IN_ADDR, .size = sizeof(struct in6_addr) },
[IFAL_LABEL] = { .type = NETLINK_TYPE_U32 },
};
static const NLTypeSystem rtnl_addrlabel_type_system = {
.count = ELEMENTSOF(rtnl_addrlabel_types),
.types = rtnl_addrlabel_types,
};
static const NLType rtnl_types[] = {
[NLMSG_DONE] = { .type = NETLINK_TYPE_NESTED, .type_system = &empty_type_system, .size = 0 },
[NLMSG_ERROR] = { .type = NETLINK_TYPE_NESTED, .type_system = &empty_type_system, .size = sizeof(struct nlmsgerr) },
[RTM_NEWLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
[RTM_DELLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
[RTM_GETLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
[RTM_SETLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
[RTM_NEWADDR] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
[RTM_DELADDR] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
[RTM_GETADDR] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
[RTM_NEWROUTE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
[RTM_DELROUTE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
[RTM_GETROUTE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
[RTM_NEWNEIGH] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
[RTM_DELNEIGH] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
[RTM_GETNEIGH] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
[NLMSG_DONE] = { .type = NETLINK_TYPE_NESTED, .type_system = &empty_type_system, .size = 0 },
[NLMSG_ERROR] = { .type = NETLINK_TYPE_NESTED, .type_system = &empty_type_system, .size = sizeof(struct nlmsgerr) },
[RTM_NEWLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
[RTM_DELLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
[RTM_GETLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
[RTM_SETLINK] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_link_type_system, .size = sizeof(struct ifinfomsg) },
[RTM_NEWADDR] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
[RTM_DELADDR] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
[RTM_GETADDR] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_address_type_system, .size = sizeof(struct ifaddrmsg) },
[RTM_NEWROUTE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
[RTM_DELROUTE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
[RTM_GETROUTE] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_route_type_system, .size = sizeof(struct rtmsg) },
[RTM_NEWNEIGH] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
[RTM_DELNEIGH] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
[RTM_GETNEIGH] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_neigh_type_system, .size = sizeof(struct ndmsg) },
[RTM_NEWADDRLABEL] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_addrlabel_type_system, .size = sizeof(struct ifaddrlblmsg) },
[RTM_DELADDRLABEL] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_addrlabel_type_system, .size = sizeof(struct ifaddrlblmsg) },
[RTM_GETADDRLABEL] = { .type = NETLINK_TYPE_NESTED, .type_system = &rtnl_addrlabel_type_system, .size = sizeof(struct ifaddrlblmsg) },
};
const NLTypeSystem type_system_root = {

4
src/libsystemd/sd-netlink/netlink-util.h
View File

@ -32,6 +32,10 @@ bool rtnl_message_type_is_addr(uint16_t type);
bool rtnl_message_type_is_route(uint16_t type);
bool rtnl_message_type_is_neigh(uint16_t type);
static inline bool rtnl_message_type_is_addrlabel(uint16_t type) {
return IN_SET(type, RTM_NEWADDRLABEL, RTM_DELADDRLABEL, RTM_GETADDRLABEL);
}
int rtnl_set_link_name(sd_netlink **rtnl, int ifindex, const char *name);
int rtnl_set_link_properties(sd_netlink **rtnl, int ifindex, const char *alias, const struct ether_addr *mac, unsigned mtu);

40
src/libsystemd/sd-netlink/rtnl-message.c
View File

@ -18,6 +18,7 @@
***/
#include <netinet/in.h>
#include <linux/if_addrlabel.h>
#include <stdbool.h>
#include <unistd.h>
@ -700,3 +701,42 @@ int sd_rtnl_message_get_family(sd_netlink_message *m, int *family) {
return -EOPNOTSUPP;
}
int sd_rtnl_message_new_addrlabel(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t nlmsg_type, int ifindex, int ifal_family) {
struct ifaddrlblmsg *addrlabel;
int r;
assert_return(rtnl_message_type_is_addrlabel(nlmsg_type), -EINVAL);
assert_return(ret, -EINVAL);
r = message_new(rtnl, ret, nlmsg_type);
if (r < 0)
return r;
if (nlmsg_type == RTM_NEWADDRLABEL)
(*ret)->hdr->nlmsg_flags |= NLM_F_CREATE | NLM_F_EXCL;
addrlabel = NLMSG_DATA((*ret)->hdr);
addrlabel->ifal_family = ifal_family;
addrlabel->ifal_index = ifindex;
return 0;
}
int sd_rtnl_message_addrlabel_set_prefixlen(sd_netlink_message *m, unsigned char prefixlen) {
struct ifaddrlblmsg *addrlabel;
assert_return(m, -EINVAL);
assert_return(m->hdr, -EINVAL);
assert_return(rtnl_message_type_is_addrlabel(m->hdr->nlmsg_type), -EINVAL);
addrlabel = NLMSG_DATA(m->hdr);
if (prefixlen > 128)
return -ERANGE;
addrlabel->ifal_prefixlen = prefixlen;
return 0;
}

3
src/systemd/sd-netlink.h
View File

@ -155,6 +155,9 @@ int sd_rtnl_message_neigh_get_ifindex(sd_netlink_message *m, int *family);
int sd_rtnl_message_neigh_get_state(sd_netlink_message *m, uint16_t *state);
int sd_rtnl_message_neigh_get_flags(sd_netlink_message *m, uint8_t *flags);
int sd_rtnl_message_new_addrlabel(sd_netlink *rtnl, sd_netlink_message **ret, uint16_t nlmsg_type, int ifindex, int ifal_family);
int sd_rtnl_message_addrlabel_set_prefixlen(sd_netlink_message *m, unsigned char prefixlen);
_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_netlink, sd_netlink_unref);
_SD_DEFINE_POINTER_CLEANUP_FUNC(sd_netlink_message, sd_netlink_message_unref);