diff options
Diffstat (limited to 'meta-facebook/meta-yosemite/recipes-yosemite/oob-nic/oob-nic/src/ll_map.c')
-rw-r--r-- | meta-facebook/meta-yosemite/recipes-yosemite/oob-nic/oob-nic/src/ll_map.c | 225 |
1 files changed, 0 insertions, 225 deletions
diff --git a/meta-facebook/meta-yosemite/recipes-yosemite/oob-nic/oob-nic/src/ll_map.c b/meta-facebook/meta-yosemite/recipes-yosemite/oob-nic/oob-nic/src/ll_map.c deleted file mode 100644 index 64e5069..0000000 --- a/meta-facebook/meta-yosemite/recipes-yosemite/oob-nic/oob-nic/src/ll_map.c +++ /dev/null @@ -1,225 +0,0 @@ -/* - * Note: Original file from iproute2 package - * - * ll_map.c - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> - * - */ - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <syslog.h> -#include <fcntl.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <string.h> -#include <net/if.h> - -#include "libnetlink.h" -#include "ll_map.h" -#include "hlist.h" - -struct ll_cache { - struct hlist_node idx_hash; - struct hlist_node name_hash; - unsigned flags; - int index; - unsigned short type; - char name[IFNAMSIZ]; -}; - -#define IDXMAP_SIZE 1024 -static struct hlist_head idx_head[IDXMAP_SIZE]; -static struct hlist_head name_head[IDXMAP_SIZE]; - -static struct ll_cache *ll_get_by_index(unsigned index) -{ - struct hlist_node *n; - unsigned h = index & (IDXMAP_SIZE - 1); - - hlist_for_each(n, &idx_head[h]) { - struct ll_cache *im - = container_of(n, struct ll_cache, idx_hash); - if (im->index == index) - return im; - } - - return NULL; -} - -static unsigned namehash(const char *str) -{ - unsigned hash = 5381; - - while (*str) - hash = ((hash << 5) + hash) + *str++; /* hash * 33 + c */ - - return hash; -} - -static struct ll_cache *ll_get_by_name(const char *name) -{ - struct hlist_node *n; - unsigned h = namehash(name) & (IDXMAP_SIZE - 1); - - hlist_for_each(n, &name_head[h]) { - struct ll_cache *im - = container_of(n, struct ll_cache, name_hash); - - if (strncmp(im->name, name, IFNAMSIZ) == 0) - return im; - } - - return NULL; -} - -int ll_remember_index(const struct sockaddr_nl *who, - struct nlmsghdr *n, void *arg) -{ - unsigned int h; - const char *ifname; - struct ifinfomsg *ifi = NLMSG_DATA(n); - struct ll_cache *im; - struct rtattr *tb[IFLA_MAX+1]; - - if (n->nlmsg_type != RTM_NEWLINK && n->nlmsg_type != RTM_DELLINK) - return 0; - - if (n->nlmsg_len < NLMSG_LENGTH(sizeof(ifi))) - return -1; - - im = ll_get_by_index(ifi->ifi_index); - if (n->nlmsg_type == RTM_DELLINK) { - if (im) { - hlist_del(&im->name_hash); - hlist_del(&im->idx_hash); - free(im); - } - return 0; - } - - memset(tb, 0, sizeof(tb)); - parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), IFLA_PAYLOAD(n)); - ifname = rta_getattr_str(tb[IFLA_IFNAME]); - if (ifname == NULL) - return 0; - - if (im) { - /* change to existing entry */ - if (strcmp(im->name, ifname) != 0) { - hlist_del(&im->name_hash); - h = namehash(ifname) & (IDXMAP_SIZE - 1); - hlist_add_head(&im->name_hash, &name_head[h]); - } - - im->flags = ifi->ifi_flags; - return 0; - } - - im = malloc(sizeof(*im)); - if (im == NULL) - return 0; - im->index = ifi->ifi_index; - strcpy(im->name, ifname); - im->type = ifi->ifi_type; - im->flags = ifi->ifi_flags; - - h = ifi->ifi_index & (IDXMAP_SIZE - 1); - hlist_add_head(&im->idx_hash, &idx_head[h]); - - h = namehash(ifname) & (IDXMAP_SIZE - 1); - hlist_add_head(&im->name_hash, &name_head[h]); - - return 0; -} - -const char *ll_idx_n2a(unsigned idx, char *buf) -{ - const struct ll_cache *im; - - if (idx == 0) - return "*"; - - im = ll_get_by_index(idx); - if (im) - return im->name; - - if (if_indextoname(idx, buf) == NULL) - snprintf(buf, IFNAMSIZ, "if%d", idx); - - return buf; -} - -const char *ll_index_to_name(unsigned idx) -{ - static char nbuf[IFNAMSIZ]; - - return ll_idx_n2a(idx, nbuf); -} - -int ll_index_to_type(unsigned idx) -{ - const struct ll_cache *im; - - if (idx == 0) - return -1; - - im = ll_get_by_index(idx); - return im ? im->type : -1; -} - -unsigned ll_index_to_flags(unsigned idx) -{ - const struct ll_cache *im; - - if (idx == 0) - return 0; - - im = ll_get_by_index(idx); - return im ? im->flags : -1; -} - -unsigned ll_name_to_index(const char *name) -{ - const struct ll_cache *im; - unsigned idx; - - if (name == NULL) - return 0; - - im = ll_get_by_name(name); - if (im) - return im->index; - - idx = if_nametoindex(name); - if (idx == 0) - sscanf(name, "if%u", &idx); - return idx; -} - -void ll_init_map(struct rtnl_handle *rth) -{ - static int initialized; - - if (initialized) - return; - - if (rtnl_wilddump_request(rth, AF_UNSPEC, RTM_GETLINK) < 0) { - perror("Cannot send dump request"); - exit(1); - } - - if (rtnl_dump_filter(rth, ll_remember_index, NULL) < 0) { - fprintf(stderr, "Dump terminated\n"); - exit(1); - } - - initialized = 1; -} |