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authorTom Gundersen <teg@jklm.no>2015-09-21 15:13:18 +0200
committerTom Gundersen <teg@jklm.no>2015-09-21 15:13:18 +0200
commita1b7a5bbdd8da94e41b5e79be7a6e853ae910d2b (patch)
treef9041eb0474312b6795bd581224281c03135d6e0 /src/libsystemd-network/ipv4ll-network.c
parent26ce77961868085c47156adaacb48913e1952da3 (diff)
parent7b713b81c27277f37420c121f2c9eeb10646ff5a (diff)
Merge pull request #1288 from teg/ipv4acd-3
sd-ipv4acd: split out as separate library from sd-ipv4ll
Diffstat (limited to 'src/libsystemd-network/ipv4ll-network.c')
-rw-r--r--src/libsystemd-network/ipv4ll-network.c91
1 files changed, 0 insertions, 91 deletions
diff --git a/src/libsystemd-network/ipv4ll-network.c b/src/libsystemd-network/ipv4ll-network.c
deleted file mode 100644
index 93ffed408f..0000000000
--- a/src/libsystemd-network/ipv4ll-network.c
+++ /dev/null
@@ -1,91 +0,0 @@
-/***
- This file is part of systemd.
-
- Copyright (C) 2014 Axis Communications AB. All rights reserved.
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <linux/filter.h>
-
-#include "util.h"
-#include "ipv4ll-internal.h"
-
-int arp_network_send_raw_socket(int fd, const union sockaddr_union *link,
- const struct ether_arp *arp) {
- int r;
-
- assert(arp);
- assert(link);
- assert(fd >= 0);
-
- r = sendto(fd, arp, sizeof(struct ether_arp), 0, &link->sa, sizeof(link->ll));
- if (r < 0)
- return -errno;
-
- return 0;
-}
-
-int arp_network_bind_raw_socket(int ifindex, union sockaddr_union *link) {
-
- static const struct sock_filter filter[] = {
- BPF_STMT(BPF_LD + BPF_W + BPF_LEN, 0), /* A <- packet length */
- BPF_JUMP(BPF_JMP + BPF_JGE + BPF_K, sizeof(struct ether_arp), 1, 0), /* packet >= arp packet ? */
- BPF_STMT(BPF_RET + BPF_K, 0), /* ignore */
- BPF_STMT(BPF_LD + BPF_H + BPF_ABS, offsetof(struct ether_arp, ea_hdr.ar_hrd)), /* A <- header */
- BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, ARPHRD_ETHER, 1, 0), /* header == ethernet ? */
- BPF_STMT(BPF_RET + BPF_K, 0), /* ignore */
- BPF_STMT(BPF_LD + BPF_H + BPF_ABS, offsetof(struct ether_arp, ea_hdr.ar_pro)), /* A <- protocol */
- BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, ETHERTYPE_IP, 1, 0), /* protocol == IP ? */
- BPF_STMT(BPF_RET + BPF_K, 0), /* ignore */
- BPF_STMT(BPF_LD + BPF_H + BPF_ABS, offsetof(struct ether_arp, ea_hdr.ar_op)), /* A <- operation */
- BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, ARPOP_REQUEST, 0, 1), /* protocol == request ? */
- BPF_STMT(BPF_RET + BPF_K, 65535), /* return all */
- BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, ARPOP_REPLY, 0, 1), /* protocol == reply ? */
- BPF_STMT(BPF_RET + BPF_K, 65535), /* return all */
- BPF_STMT(BPF_RET + BPF_K, 0), /* ignore */
- };
- struct sock_fprog fprog = {
- .len = ELEMENTSOF(filter),
- .filter = (struct sock_filter*) filter
- };
- _cleanup_close_ int s = -1;
- int r;
-
- assert(ifindex > 0);
- assert(link);
-
- s = socket(PF_PACKET, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0);
- if (s < 0)
- return -errno;
-
- r = setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER, &fprog, sizeof(fprog));
- if (r < 0)
- return -errno;
-
- link->ll.sll_family = AF_PACKET;
- link->ll.sll_protocol = htons(ETH_P_ARP);
- link->ll.sll_ifindex = ifindex;
- link->ll.sll_halen = ETH_ALEN;
- memset(link->ll.sll_addr, 0xff, ETH_ALEN);
-
- r = bind(s, &link->sa, sizeof(link->ll));
- if (r < 0)
- return -errno;
-
- r = s;
- s = -1;
-
- return r;
-}