diff options
Diffstat (limited to 'extras/router-plugin/devices/rtnetlink/netns.c')
| -rw-r--r-- | extras/router-plugin/devices/rtnetlink/netns.c | 787 |
1 files changed, 0 insertions, 787 deletions
diff --git a/extras/router-plugin/devices/rtnetlink/netns.c b/extras/router-plugin/devices/rtnetlink/netns.c deleted file mode 100644 index 19adb469a..000000000 --- a/extras/router-plugin/devices/rtnetlink/netns.c +++ /dev/null @@ -1,787 +0,0 @@ -/* - * Copyright (c) 2016-2019 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - - -#include <vlib/vlib.h> -#include <vlib/unix/unix.h> -#include <vnet/ethernet/ethernet.h> -#include <vnet/ip/ip4_packet.h> -#include <vnet/ip/ip6_packet.h> -#include <vnet/ip/format.h> -#include <stddef.h> - -#include "netns.h" - -/* Enable some RTA values debug */ -//#define RTNL_CHECK - -#define is_nonzero(x) \ - ({ \ - u8 __is_zero_zero[sizeof(x)] = {}; \ - memcmp(__is_zero_zero, &x, sizeof(x)); \ - }) - -typedef struct { - u8 type; //Attribute identifier - u8 unique; //Part of the values uniquely identifying an entry - u16 offset; //Offset where stored in struct - u16 size; //Length of the attribute -} rtnl_mapping_t; - -#define ns_foreach_ifla \ - _(IFLA_ADDRESS, hwaddr) \ - _(IFLA_BROADCAST, broadcast) \ - _(IFLA_IFNAME, ifname) \ - _(IFLA_MASTER, master) \ - _(IFLA_MTU, mtu) \ - _(IFLA_QDISC, qdisc) - -static rtnl_mapping_t ns_ifmap[] = { -#define _(t, e) \ - { \ - .type = t, \ - .offset = offsetof(ns_link_t, e), \ - .size = sizeof(((ns_link_t*)0)->e) \ - }, - ns_foreach_ifla -#undef _ - { .type = 0 } -}; - -u8 *format_ns_link (u8 *s, va_list *args) -{ - ns_link_t *l = va_arg(*args, ns_link_t *); - s = format(s, "%s index %u", l->ifname, l->ifi.ifi_index); - return s; -} - -#define ns_foreach_rta \ - _(RTA_DST, dst, 1) \ - _(RTA_SRC, src, 1) \ - _(RTA_GATEWAY, gateway, 1) \ - _(RTA_IIF, iif, 1) \ - _(RTA_OIF, oif, 1) \ - _(RTA_PREFSRC, prefsrc, 0) \ - _(RTA_TABLE, table, 0) \ - _(RTA_PRIORITY, priority, 0) \ - _(RTA_CACHEINFO, cacheinfo, 0) \ - _(RTA_ENCAP, encap, 1) - -static rtnl_mapping_t ns_routemap[] = { -#define _(t, e, u) \ - { \ - .type = t, .unique = u, \ - .offset = offsetof(ns_route_t, e), \ - .size = sizeof(((ns_route_t*)0)->e) \ - }, - ns_foreach_rta -#undef _ - { .type = 0 } -}; - -u8 *format_ns_route (u8 *s, va_list *args) -{ - ns_route_t *r = va_arg(*args, ns_route_t *); - void *format_ip = r->rtm.rtm_family == AF_INET ? format_ip4_address : format_ip6_address; - s = format(s, "%U/%d", format_ip, r->dst, r->rtm.rtm_dst_len); - if (r->rtm.rtm_src_len) - s = format(s, " from %U/%d", format_ip, r->src, r->rtm.rtm_src_len); - if (is_nonzero(r->gateway)) - s = format(s, " via %U", format_ip, r->gateway); - if (r->iif) - s = format(s, " iif %d", r->iif); - if (r->oif) - s = format(s, " oif %d", r->oif); - if (is_nonzero(r->prefsrc)) - s = format(s, " src %U", format_ip, r->prefsrc); - if (r->table) - s = format(s, " table %d", r->table); - if (r->priority) - s = format(s, " priority %u", r->priority); - return s; -} - -#define ns_foreach_ifaddr \ - _(IFA_ADDRESS, addr, 1) \ - _(IFA_LOCAL, local, 1) \ - _(IFA_LABEL, label, 0) \ - _(IFA_BROADCAST, broadcast, 0) \ - _(IFA_ANYCAST, anycast, 0) \ - _(IFA_CACHEINFO, cacheinfo, 0) - -static rtnl_mapping_t ns_addrmap[] = { -#define _(t, e, u) \ - { \ - .type = t, .unique = u, \ - .offset = offsetof(ns_addr_t, e), \ - .size = sizeof(((ns_addr_t*)0)->e) \ - }, - ns_foreach_ifaddr -#undef _ - { .type = 0 } -}; - -u8 *format_ns_addr (u8 *s, va_list *args) -{ - ns_addr_t *a = va_arg(*args, ns_addr_t *); - void *format_ip = a->ifaddr.ifa_family == AF_INET ? format_ip4_address : format_ip6_address; - s = format(s, "%U/%d", format_ip, a->addr, a->ifaddr.ifa_prefixlen); - if (is_nonzero(a->label)) - s = format(s, " dev %s", a->label); - if (is_nonzero(a->broadcast)) - s = format(s, " broadcast %U", format_ip, a->broadcast); - if (is_nonzero(a->anycast)) - s = format(s, " anycast %U", format_ip, a->anycast); - if (is_nonzero(a->local)) - s = format(s, " local %U", format_ip, a->local); - return s; -} - -#ifndef NDA_RTA -#define NDA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg)))) -#define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndmsg)) -#endif - -#define ns_foreach_neigh \ - _(NDA_DST, dst, 1) \ - _(NDA_LLADDR, lladdr, 0) \ - _(NDA_PROBES, probes, 0) \ - _(NDA_CACHEINFO, cacheinfo, 0) - -static rtnl_mapping_t ns_neighmap[] = { -#define _(t, e, u) \ - { \ - .type = t, .unique = u, \ - .offset = offsetof(ns_neigh_t, e), \ - .size = sizeof(((ns_neigh_t*)0)->e) \ - }, - ns_foreach_neigh -#undef _ - { .type = 0 } -}; - -u8 *format_ns_neigh (u8 *s, va_list *args) -{ - ns_neigh_t *n = va_arg(*args, ns_neigh_t *); - void *format_ip = n->nd.ndm_family == AF_INET ? format_ip4_address : format_ip6_address; - s = format(s, "%U", format_ip, n->dst); - if (is_nonzero(n->lladdr)) - s = format(s, " lladdr %U", format_ethernet_address, n->lladdr); - if (n->probes) - s = format(s, " probes %d", n->probes); - return s; -} - -typedef struct { - void (*notify)(void *obj, netns_type_t type, u32 flags, uword opaque); - uword opaque; - u32 netns_index; -} netns_handle_t; - -typedef struct { - netns_t netns; - u32 rtnl_handle; - u32 subscriber_count; -} netns_p; - -typedef struct { - netns_p *netnss; - netns_handle_t *handles; -} netns_main_t; - -netns_main_t netns_main; - -static int -rtnl_parse_rtattr(struct rtattr *db[], size_t max, - struct rtattr *rta, size_t len) { - for(; RTA_OK(rta, len); rta = RTA_NEXT(rta, len)) { - if (rta->rta_type <= max) - db[rta->rta_type] = rta; -#ifdef RTNL_CHECK - else - clib_warning("RTA type too high: %d", rta->rta_type); -#endif - } - - if(len) { - clib_warning("rattr lenght mistmatch %d %d len", - (int) len, (int) rta->rta_len); - return -1; - } - return 0; -} - -/* - * Debug function to display when - * we receive an RTA that I forgot in - * the mapping table (there are so many of them). - */ -#ifdef RTNL_CHECK -static void -rtnl_entry_check(struct rtattr *rtas[], - size_t rta_len, - rtnl_mapping_t map[], - char *logstr) -{ - int i; - for (i=0; i<rta_len; i++) { - if (!rtas[i]) - continue; - - rtnl_mapping_t *m = map; - for (m = map; m->type; m++) { - if (m->type == rtas[i]->rta_type) - break; - } - if (!m->type) - clib_warning("Unknown RTA type %d (%s)", rtas[i]->rta_type, logstr); - } -} -#endif - -/* - * Check if the provided entry matches the parsed and unique rtas - */ -static int -rtnl_entry_match(void *entry, - struct rtattr *rtas[], - rtnl_mapping_t map[]) -{ - u8 zero[1024] = {}; - for ( ;map->type != 0; map++) { - struct rtattr *rta = rtas[map->type]; - size_t rta_len = rta?RTA_PAYLOAD(rta):0; - if (!map->unique) - continue; - - if (rta && RTA_PAYLOAD(rta) > map->size) { - clib_warning("rta (type=%d len=%d) too long (max %d)", - rta->rta_type, rta->rta_len, map->size); - return -1; - } - - if ((rta && memcmp(RTA_DATA(rta), entry + map->offset, rta_len)) || - memcmp(entry + map->offset + rta_len, zero, map->size - rta_len)) { - return 0; - } - } - return 1; -} - -static int -rtnl_entry_set(void *entry, - struct rtattr *rtas[], - rtnl_mapping_t map[], - int init) -{ - for (; map->type != 0; map++) { - - struct rtattr *rta = rtas[map->type]; - - if(map->type == RTA_ENCAP && rta) { - /*Data of RTA_ENCAP is a pointer to rta attributes for MPLS*/ - rta = (struct rtattr*)RTA_DATA(rta); - if (RTA_PAYLOAD(rta) > map->size) { - clib_warning("rta (type=%d len=%d) too long (max %d)", rta->rta_type, rta->rta_len, map->size); - return -1; - } - memcpy(entry + map->offset, RTA_DATA(rta), map->size); - memset(entry + map->offset + map->size, 0, 0); - } else if (rta) { - if (RTA_PAYLOAD(rta) > map->size) { - clib_warning("rta (type=%d len=%d) too long (max %d)", rta->rta_type, rta->rta_len, map->size); - return -1; - } - memcpy(entry + map->offset, RTA_DATA(rta), RTA_PAYLOAD(rta)); - memset(entry + map->offset + RTA_PAYLOAD(rta), 0, map->size - RTA_PAYLOAD(rta)); - } else if (init) { - memset(entry + map->offset, 0, map->size); - } - } - return 0; -} - -void -netns_notify(netns_p *ns, void *obj, netns_type_t type, u32 flags) -{ - netns_main_t *nm = &netns_main; - netns_handle_t *h; - pool_foreach(h, nm->handles, { - if (h->netns_index == (ns - nm->netnss) && h->notify) - h->notify(obj, type, flags, h->opaque); - }); -} - -static_always_inline int -mask_match(void *a, void *b, void *mask, size_t len) -{ - u8 *va = (u8 *) a; - u8 *vb = (u8 *) b; - u8 *vm = (u8 *) mask; - while (len--) { - if ((va[len] ^ vb[len]) & vm[len]) - return 0; - } - return 1; -} - -static ns_link_t * -ns_get_link(netns_p *ns, struct ifinfomsg *ifi, struct rtattr *rtas[]) -{ - ns_link_t *link; - pool_foreach(link, ns->netns.links, { - if(ifi->ifi_index == link->ifi.ifi_index) - return link; - }); - return NULL; -} - -static int -ns_rcv_link(netns_p *ns, struct nlmsghdr *hdr) -{ - ns_link_t *link; - struct ifinfomsg *ifi; - struct rtattr *rtas[IFLA_MAX + 1] = {}; - size_t datalen = hdr->nlmsg_len - NLMSG_ALIGN(sizeof(*hdr)); - - if(datalen < sizeof(*ifi)) - return -1; - - ifi = NLMSG_DATA(hdr); - if((datalen > NLMSG_ALIGN(sizeof(*ifi))) && - rtnl_parse_rtattr(rtas, IFLA_MAX, IFLA_RTA(ifi), - IFLA_PAYLOAD(hdr))) { - return -1; - } -#ifdef RTNL_CHECK - rtnl_entry_check(rtas, IFLA_MAX + 1, ns_ifmap, "link"); -#endif - - link = ns_get_link(ns, ifi, rtas); - - if (hdr->nlmsg_type == RTM_DELLINK) { - if (!link) - return -1; - pool_put(ns->netns.links, link); - netns_notify(ns, link, NETNS_TYPE_LINK, NETNS_F_DEL); - return 0; - } - - if (!link) { - pool_get(ns->netns.links, link); - rtnl_entry_set(link, rtas, ns_ifmap, 1); - } else { - rtnl_entry_set(link, rtas, ns_ifmap, 0); - } - - link->ifi = *ifi; - link->last_updated = vlib_time_now(vlib_get_main()); - netns_notify(ns, link, NETNS_TYPE_LINK, NETNS_F_ADD); - return 0; -} - -static ns_route_t * -ns_get_route(netns_p *ns, struct rtmsg *rtm, struct rtattr *rtas[]) -{ - ns_route_t *route; - - //This describes the values which uniquely identify a route - struct rtmsg msg = { - .rtm_family = 0xff, - .rtm_dst_len = 0xff, - .rtm_src_len = 0xff, - .rtm_table = 0xff, - .rtm_protocol = 0xff, - .rtm_type = 0xff - }; - - pool_foreach(route, ns->netns.routes, { - if(mask_match(&route->rtm, rtm, &msg, sizeof(struct rtmsg)) && - rtnl_entry_match(route, rtas, ns_routemap)) - return route; - }); - return NULL; -} - -static int -ns_rcv_route(netns_p *ns, struct nlmsghdr *hdr) -{ - ns_route_t *route; - struct rtmsg *rtm; - struct rtattr *rtas[RTA_MAX + 1] = {}; - size_t datalen = hdr->nlmsg_len - NLMSG_ALIGN(sizeof(*hdr)); - - if(datalen < sizeof(*rtm)) - return -1; - - rtm = NLMSG_DATA(hdr); - if((datalen > NLMSG_ALIGN(sizeof(*rtm))) && - rtnl_parse_rtattr(rtas, RTA_MAX, RTM_RTA(rtm), - RTM_PAYLOAD(hdr))) { - return -1; - } -#ifdef RTNL_CHECK - rtnl_entry_check(rtas, RTA_MAX + 1, ns_routemap, "route"); -#endif - route = ns_get_route(ns, rtm, rtas); - - if (hdr->nlmsg_type == RTM_DELROUTE) { - if (!route) - return -1; - pool_put(ns->netns.routes, route); - netns_notify(ns, route, NETNS_TYPE_ROUTE, NETNS_F_DEL); - return 0; - } - - if (!route) { - pool_get(ns->netns.routes, route); - memset(route, 0, sizeof(*route)); - rtnl_entry_set(route, rtas, ns_routemap, 1); - } else { - rtnl_entry_set(route, rtas, ns_routemap, 0); - } - - route->rtm = *rtm; - route->last_updated = vlib_time_now(vlib_get_main()); - netns_notify(ns, route, NETNS_TYPE_ROUTE, NETNS_F_ADD); - return 0; -} - -static ns_addr_t * -ns_get_addr(netns_p *ns, struct ifaddrmsg *ifaddr, struct rtattr *rtas[]) -{ - ns_addr_t *addr; - - //This describes the values which uniquely identify a route - struct ifaddrmsg msg = { - .ifa_family = 0xff, - .ifa_prefixlen = 0xff, - }; - - pool_foreach(addr, ns->netns.addresses, { - if(mask_match(&addr->ifaddr, ifaddr, &msg, sizeof(struct ifaddrmsg)) && - rtnl_entry_match(addr, rtas, ns_addrmap)) - return addr; - }); - return NULL; -} - -static int -ns_rcv_addr(netns_p *ns, struct nlmsghdr *hdr) -{ - ns_addr_t *addr; - struct ifaddrmsg *ifaddr; - struct rtattr *rtas[IFA_MAX + 1] = {}; - size_t datalen = hdr->nlmsg_len - NLMSG_ALIGN(sizeof(*hdr)); - - if(datalen < sizeof(*ifaddr)) - return -1; - - ifaddr = NLMSG_DATA(hdr); - if((datalen > NLMSG_ALIGN(sizeof(*ifaddr))) && - rtnl_parse_rtattr(rtas, IFA_MAX, IFA_RTA(ifaddr), - IFA_PAYLOAD(hdr))) { - return -1; - } -#ifdef RTNL_CHECK - rtnl_entry_check(rtas, IFA_MAX + 1, ns_addrmap, "addr"); -#endif - addr = ns_get_addr(ns, ifaddr, rtas); - - if (hdr->nlmsg_type == RTM_DELADDR) { - if (!addr) - return -1; - pool_put(ns->netns.addresses, addr); - netns_notify(ns, addr, NETNS_TYPE_ADDR, NETNS_F_DEL); - return 0; - } - - if (!addr) { - pool_get(ns->netns.addresses, addr); - memset(addr, 0, sizeof(*addr)); - rtnl_entry_set(addr, rtas, ns_addrmap, 1); - } else { - rtnl_entry_set(addr, rtas, ns_addrmap, 0); - } - - addr->ifaddr = *ifaddr; - addr->last_updated = vlib_time_now(vlib_get_main()); - netns_notify(ns, addr, NETNS_TYPE_ADDR, NETNS_F_ADD); - return 0; -} - -static ns_neigh_t * -ns_get_neigh(netns_p *ns, struct ndmsg *nd, struct rtattr *rtas[]) -{ - ns_neigh_t *neigh; - - //This describes the values which uniquely identify a route - struct ndmsg msg = { - .ndm_family = 0xff, - .ndm_ifindex = 0xff, - }; - - pool_foreach(neigh, ns->netns.neighbors, { - if(mask_match(&neigh->nd, nd, &msg, sizeof(&msg)) && - rtnl_entry_match(neigh, rtas, ns_neighmap)) - return neigh; - }); - return NULL; -} - -static int -ns_rcv_neigh(netns_p *ns, struct nlmsghdr *hdr) -{ - ns_neigh_t *neigh; - struct ndmsg *nd; - struct rtattr *rtas[NDA_MAX + 1] = {}; - size_t datalen = hdr->nlmsg_len - NLMSG_ALIGN(sizeof(*hdr)); - - if(datalen < sizeof(*nd)) - return -1; - - nd = NLMSG_DATA(hdr); - if((datalen > NLMSG_ALIGN(sizeof(*nd))) && - rtnl_parse_rtattr(rtas, NDA_MAX, NDA_RTA(nd), - NDA_PAYLOAD(hdr))) { - return -1; - } -#ifdef RTNL_CHECK - rtnl_entry_check(rtas, NDA_MAX + 1, ns_neighmap, "nd"); -#endif - neigh = ns_get_neigh(ns, nd, rtas); - - if (hdr->nlmsg_type == RTM_DELNEIGH) { - if (!neigh) - return -1; - pool_put(ns->netns.neighbors, neigh); - netns_notify(ns, neigh, NETNS_TYPE_NEIGH, NETNS_F_DEL); - return 0; - } - - if (!neigh) { - pool_get(ns->netns.neighbors, neigh); - memset(neigh, 0, sizeof(*neigh)); - rtnl_entry_set(neigh, rtas, ns_neighmap, 1); - } else { - rtnl_entry_set(neigh, rtas, ns_neighmap, 0); - } - - neigh->nd = *nd; - neigh->last_updated = vlib_time_now(vlib_get_main()); - netns_notify(ns, neigh, NETNS_TYPE_NEIGH, NETNS_F_ADD); - return 0; -} - -#define ns_object_foreach \ - _(neighbors, NETNS_TYPE_NEIGH) \ - _(routes, NETNS_TYPE_ROUTE) \ - _(addresses, NETNS_TYPE_ADDR) \ - _(links, NETNS_TYPE_LINK) - -static void -ns_recv_error(rtnl_error_t err, uword o) -{ - //An error was received. Reset everything. - netns_p *ns = &netns_main.netnss[o]; - u32 *indexes = 0; - u32 *i = 0; - -#define _(pool, type) \ - pool_foreach_index(*i, ns->netns.pool, { \ - vec_add1(indexes, *i); \ - }) \ - vec_foreach(i, indexes) { \ - pool_put_index(ns->netns.pool, *i); \ - netns_notify(ns, &ns->netns.pool[*i], type, NETNS_F_DEL); \ - } \ - vec_reset_length(indexes); - - ns_object_foreach - -#undef _ - vec_free(indexes); -} - -static void -ns_recv_rtnl(struct nlmsghdr *hdr, uword o) -{ - netns_p *ns = &netns_main.netnss[o]; - switch (hdr->nlmsg_type) { - case RTM_NEWROUTE: - case RTM_DELROUTE: - ns_rcv_route(ns, hdr); - break; - case RTM_NEWLINK: - case RTM_DELLINK: - ns_rcv_link(ns, hdr); - break; - case RTM_NEWADDR: - case RTM_DELADDR: - ns_rcv_addr(ns, hdr); - break; - case RTM_NEWNEIGH: - case RTM_DELNEIGH: - ns_rcv_neigh(ns, hdr); - break; - default: - clib_warning("unknown rtnl type %d", hdr->nlmsg_type); - break; - } -} - -static void -netns_destroy(netns_p *ns) -{ - netns_main_t *nm = &netns_main; - rtnl_stream_close(ns->rtnl_handle); - pool_put(nm->netnss, ns); - pool_free(ns->netns.links); - pool_free(ns->netns.addresses); - pool_free(ns->netns.routes); - pool_free(ns->netns.neighbors); -} - -static netns_p * -netns_get(char *name) -{ - netns_main_t *nm = &netns_main; - netns_p *ns; - pool_foreach(ns, nm->netnss, { - if (!strcmp(name, ns->netns.name)) - return ns; - }); - - if (strlen(name) > RTNL_NETNS_NAMELEN) - return NULL; - - pool_get(nm->netnss, ns); - rtnl_stream_t s = { - .recv_message = ns_recv_rtnl, - .error = ns_recv_error, - .opaque = (uword)(ns - nm->netnss), - }; - strcpy(s.name, name); - - u32 handle; - if ((handle = rtnl_stream_open(&s)) == ~0) { - pool_put(nm->netnss, ns); - return NULL; - } - - strcpy(ns->netns.name, name); - ns->netns.addresses = 0; - ns->netns.links = 0; - ns->netns.neighbors = 0; - ns->netns.routes = 0; - ns->subscriber_count = 0; - ns->rtnl_handle = handle; - return ns; -} - -u32 netns_open(char *name, netns_sub_t *sub) -{ - netns_main_t *nm = &netns_main; - netns_p *ns; - netns_handle_t *p; - if (!(ns = netns_get(name))) - return ~0; - - pool_get(nm->handles, p); - p->netns_index = ns - nm->netnss; - p->notify = sub->notify; - p->opaque = sub->opaque; - ns->subscriber_count++; - return p - nm->handles; -} - -netns_t *netns_getns(u32 handle) -{ - netns_main_t *nm = &netns_main; - netns_handle_t *h = pool_elt_at_index(nm->handles, handle); - netns_p *ns = pool_elt_at_index(nm->netnss, h->netns_index); - return &ns->netns; -} - -void netns_close(u32 handle) -{ - netns_main_t *nm = &netns_main; - netns_handle_t *h = pool_elt_at_index(nm->handles, handle); - netns_p *ns = pool_elt_at_index(nm->netnss, h->netns_index); - pool_put(h, nm->handles); - ns->subscriber_count--; - if (!ns->subscriber_count) - netns_destroy(ns); -} - -void netns_callme(u32 handle, char del) -{ - netns_main_t *nm = &netns_main; - netns_handle_t *h = pool_elt_at_index(nm->handles, handle); - netns_p *ns = pool_elt_at_index(nm->netnss, h->netns_index); - u32 i = 0; - if (!h->notify) - return; - -#define _(pool, type) \ - pool_foreach_index(i, ns->netns.pool, { \ - h->notify(&ns->netns.pool[i], type, \ - del?NETNS_F_DEL:NETNS_F_ADD, h->opaque); \ - }); - - ns_object_foreach -#undef _ - - } - -u8 *format_ns_object(u8 *s, va_list *args) -{ - netns_type_t t = va_arg(*args, netns_type_t); - void *o = va_arg(*args, void *); - switch (t) { - case NETNS_TYPE_ADDR: - return format(s, "addr %U", format_ns_addr, o); - case NETNS_TYPE_ROUTE: - return format(s, "route %U", format_ns_route, o); - case NETNS_TYPE_LINK: - return format(s, "link %U", format_ns_link, o); - case NETNS_TYPE_NEIGH: - return format(s, "neigh %U", format_ns_neigh, o); - } - return s; -} - -u8 *format_ns_flags(u8 *s, va_list *args) -{ - u32 flags = va_arg(*args, u32); - if (flags & NETNS_F_ADD) - s = format(s, "add"); - else if (flags & NETNS_F_DEL) - s = format(s, "del"); - else - s = format(s, "mod"); - return s; -} - -clib_error_t * -netns_init (vlib_main_t * vm) -{ - netns_main_t *nm = &netns_main; - nm->netnss = 0; - nm->handles = 0; - return 0; -} - -VLIB_INIT_FUNCTION (netns_init); |