diff options
| author | Andy Wingo <wingo@pobox.com> | 2015-04-19 13:28:46 +0200 |
|---|---|---|
| committer | Andy Wingo <wingo@pobox.com> | 2015-04-19 13:32:24 +0200 |
| commit | e418908760d8b7826017b07b2a5d2e365152e7ae (patch) | |
| tree | 82044c18a470e935170c97b5870a545de47f4084 /src/libsystemd-network/lldp-network.c | |
| parent | a2109619cd5c28c4739e659e40b6b524c7c0d488 (diff) | |
Remove src/libsystemd-network
Diffstat (limited to 'src/libsystemd-network/lldp-network.c')
| -rw-r--r-- | src/libsystemd-network/lldp-network.c | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/src/libsystemd-network/lldp-network.c b/src/libsystemd-network/lldp-network.c deleted file mode 100644 index 664d2f7867..0000000000 --- a/src/libsystemd-network/lldp-network.c +++ /dev/null @@ -1,111 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright (C) 2014 Tom Gundersen - Copyright (C) 2014 Susant Sahani - - 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 <linux/if_ether.h> - -#include "socket-util.h" -#include "lldp-tlv.h" -#include "lldp-network.h" -#include "lldp-internal.h" - -int lldp_network_bind_raw_socket(int ifindex) { - typedef struct LLDPFrame { - struct ethhdr hdr; - uint8_t tlvs[0]; - } LLDPFrame; - - struct sock_filter filter[] = { - BPF_STMT(BPF_LD + BPF_W + BPF_ABS, offsetof(LLDPFrame, hdr.h_dest)), /* A <- 4 bytes of destination MAC */ - BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, 0x0180c200, 1, 0), /* A != 01:80:c2:00 */ - BPF_STMT(BPF_RET + BPF_K, 0), /* drop packet */ - BPF_STMT(BPF_LD + BPF_H + BPF_ABS, offsetof(LLDPFrame, hdr.h_dest) + 4), /* A <- remaining 2 bytes of destination MAC */ - BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, 0x0000, 3, 0), /* A != 00:00 */ - BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, 0x0003, 2, 0), /* A != 00:03 */ - BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, 0x000e, 1, 0), /* A != 00:0e */ - BPF_STMT(BPF_RET + BPF_K, 0), /* drop packet */ - BPF_STMT(BPF_LD + BPF_H + BPF_ABS, offsetof(LLDPFrame, hdr.h_proto)), /* A <- protocol */ - BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, ETHERTYPE_LLDP, 1, 0), /* A != ETHERTYPE_LLDP */ - BPF_STMT(BPF_RET + BPF_K, 0), /* drop packet */ - BPF_STMT(BPF_RET + BPF_K, (uint32_t) -1), /* accept packet */ - }; - - struct sock_fprog fprog = { - .len = ELEMENTSOF(filter), - .filter = filter - }; - - _cleanup_close_ int s = -1; - - union sockaddr_union saddrll = { - .ll.sll_family = AF_PACKET, - .ll.sll_ifindex = ifindex, - }; - - int r; - - assert(ifindex > 0); - - s = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); - if (s < 0) - return -errno; - - r = setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER, &fprog, sizeof(fprog)); - if (r < 0) - return -errno; - - r = bind(s, &saddrll.sa, sizeof(saddrll.ll)); - if (r < 0) - return -errno; - - r = s; - s = -1; - - return r; -} - -int lldp_receive_packet(sd_event_source *s, int fd, uint32_t revents, void *userdata) { - _cleanup_tlv_packet_free_ tlv_packet *packet = NULL; - tlv_packet *p; - uint16_t length; - int r; - - assert(fd); - assert(userdata); - - r = tlv_packet_new(&packet); - if (r < 0) - return r; - - length = read(fd, &packet->pdu, sizeof(packet->pdu)); - - /* Silently drop the packet */ - if ((size_t) length > ETHER_MAX_LEN) - return 0; - - packet->userdata = userdata; - - p = packet; - packet = NULL; - - return lldp_handle_packet(p, (uint16_t) length); -} |
