int
LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
if (size < sizeof(struct ofp_header)) {
return 0;
}
static bool isInit = false;
if (!isInit) {
vlog_set_verbosity("off");
isInit = true;
}
struct ofpbuf b;
ofpbuf_use_const(&b, data, size);
for (;;) {
/* Check if ofpbuf contains ofp header. */
struct ofp_header *oh = ofpbuf_at(&b, 0, sizeof *oh);
if (!oh) {
break;
}
/* Check if length is geq than lower bound. */
size_t length = ntohs(oh->length);
if (length < sizeof *oh) {
break;
}
/* Check if ofpbuf contains payload. */
size_t tail_len = length - sizeof *oh;
void *tail = ofpbuf_at(&b, sizeof *oh, tail_len);
if (!tail) {
break;
}
ofp_print(stdout, ofpbuf_pull(&b, length), length, NULL, NULL, 2);
}
ofpbuf_uninit(&b);
return 0;
}
void
ofputil_append_queue_get_config_reply(const struct ofputil_queue_config *qc,
struct ovs_list *replies)
{
enum ofp_version ofp_version = ofpmp_version(replies);
struct ofpbuf *reply = ofpbuf_from_list(ovs_list_back(replies));
size_t start_ofs = reply->size;
size_t len_ofs;
ovs_be16 *len;
if (ofp_version < OFP14_VERSION) {
if (ofp_version < OFP12_VERSION) {
struct ofp10_packet_queue *opq10;
opq10 = ofpbuf_put_zeros(reply, sizeof *opq10);
opq10->queue_id = htonl(qc->queue);
len_ofs = (char *) &opq10->len - (char *) reply->data;
} else {
struct ofp12_packet_queue *opq12;
opq12 = ofpbuf_put_zeros(reply, sizeof *opq12);
opq12->port = ofputil_port_to_ofp11(qc->port);
opq12->queue_id = htonl(qc->queue);
len_ofs = (char *) &opq12->len - (char *) reply->data;
}
put_ofp10_queue_rate(reply, OFPQT10_MIN_RATE, qc->min_rate);
put_ofp10_queue_rate(reply, OFPQT11_MAX_RATE, qc->max_rate);
} else {
struct ofp14_queue_desc *oqd = ofpbuf_put_zeros(reply, sizeof *oqd);
oqd->port_no = ofputil_port_to_ofp11(qc->port);
oqd->queue_id = htonl(qc->queue);
len_ofs = (char *) &oqd->len - (char *) reply->data;
put_ofp14_queue_rate(reply, OFPQDPT14_MIN_RATE, qc->min_rate);
put_ofp14_queue_rate(reply, OFPQDPT14_MAX_RATE, qc->max_rate);
}
len = ofpbuf_at(reply, len_ofs, sizeof *len);
*len = htons(reply->size - start_ofs);
if (ofp_version >= OFP14_VERSION) {
ofpmp_postappend(replies, start_ofs);
}
}
static const struct nl_policy policy[] = {
[RTA_DST] = { .type = NL_A_U32, .optional = true },
[RTA_OIF] = { .type = NL_A_U32, .optional = false },
[RTA_GATEWAY] = { .type = NL_A_U32, .optional = true },
};
static const struct nl_policy policy6[] = {
[RTA_DST] = { .type = NL_A_IPV6, .optional = true },
[RTA_OIF] = { .type = NL_A_U32, .optional = true },
[RTA_GATEWAY] = { .type = NL_A_IPV6, .optional = true },
};
struct nlattr *attrs[ARRAY_SIZE(policy)];
const struct rtmsg *rtm;
rtm = ofpbuf_at(buf, NLMSG_HDRLEN, sizeof *rtm);
if (rtm->rtm_family == AF_INET) {
parsed = nl_policy_parse(buf, NLMSG_HDRLEN + sizeof(struct rtmsg),
policy, attrs, ARRAY_SIZE(policy));
ipv4 = true;
} else if (rtm->rtm_family == AF_INET6) {
parsed = nl_policy_parse(buf, NLMSG_HDRLEN + sizeof(struct rtmsg),
policy6, attrs, ARRAY_SIZE(policy6));
} else {
VLOG_DBG_RL(&rl, "received non AF_INET rtnetlink route message");
return 0;
}
if (parsed) {
const struct nlmsghdr *nlmsg;
/* Returns 1 if 'packet' is an IP fragment, 0 otherwise. */
int
flow_extract(struct ofpbuf *packet, uint32_t in_port, struct flow *flow)
{
struct ofpbuf b = *packet;
struct eth_header *eth;
int retval = 0;
memset(flow, 0, sizeof *flow);
flow->dl_vlan = htons(OFPVID_NONE);
flow->in_port = htonl(in_port);
packet->l2 = b.data;
packet->l3 = NULL;
packet->l4 = NULL;
packet->l7 = NULL;
eth = pull_eth(&b);
if (eth) {
if (ntohs(eth->eth_type) >= 0x600) {
/* This is an Ethernet II frame */
flow->dl_type = eth->eth_type;
} else {
/* This is an 802.2 frame */
struct llc_header *llc = ofpbuf_at(&b, 0, sizeof *llc);
struct snap_header *snap = ofpbuf_at(&b, sizeof *llc,
sizeof *snap);
if (llc == NULL) {
return 0;
}
if (snap
&& llc->llc_dsap == LLC_DSAP_SNAP
&& llc->llc_ssap == LLC_SSAP_SNAP
&& llc->llc_cntl == LLC_CNTL_SNAP
&& !memcmp(snap->snap_org, SNAP_ORG_ETHERNET,
sizeof snap->snap_org)) {
flow->dl_type = snap->snap_type;
ofpbuf_pull(&b, LLC_SNAP_HEADER_LEN);
} else {
flow->dl_type = htons(0x05ff);
ofpbuf_pull(&b, sizeof(struct llc_header));
}
}
/* Check for a VLAN tag */
if (flow->dl_type == htons(ETH_TYPE_VLAN)) {
struct vlan_header *vh = pull_vlan(&b);
if (vh) {
flow->dl_type = vh->vlan_next_type;
flow->dl_vlan = vh->vlan_tci & htons(VLAN_VID_MASK);
flow->dl_vlan_pcp = (uint8_t)((ntohs(vh->vlan_tci) >> VLAN_PCP_SHIFT)
& VLAN_PCP_BITMASK);
}
}
memcpy(flow->dl_src, eth->eth_src, ETH_ADDR_LEN);
memcpy(flow->dl_dst, eth->eth_dst, ETH_ADDR_LEN);
packet->l3 = b.data;
if (flow->dl_type == htons(ETH_TYPE_IP)) {
const struct ip_header *nh = pull_ip(&b);
if (nh) {
flow->nw_tos = nh->ip_tos & 0xfc;
flow->nw_proto = nh->ip_proto;
flow->nw_src = nh->ip_src;
flow->nw_dst = nh->ip_dst;
packet->l4 = b.data;
if (!IP_IS_FRAGMENT(nh->ip_frag_off)) {
if (flow->nw_proto == IP_TYPE_TCP) {
const struct tcp_header *tcp = pull_tcp(&b);
if (tcp) {
flow->tp_src = tcp->tcp_src;
flow->tp_dst = tcp->tcp_dst;
packet->l7 = b.data;
} else {
/* Avoid tricking other code into thinking that
* this packet has an L4 header. */
flow->nw_proto = 0;
}
} else if (flow->nw_proto == IP_TYPE_UDP) {
const struct udp_header *udp = pull_udp(&b);
if (udp) {
flow->tp_src = udp->udp_src;
flow->tp_dst = udp->udp_dst;
packet->l7 = b.data;
} else {
/* Avoid tricking other code into thinking that
* this packet has an L4 header. */
flow->nw_proto = 0;
}
} else if (flow->nw_proto == IP_TYPE_ICMP) {
const struct icmp_header *icmp = pull_icmp(&b);
if (icmp) {
flow->tp_src = htons(icmp->icmp_type);
flow->tp_dst = htons(icmp->icmp_code);
packet->l7 = b.data;
} else {
/* Avoid tricking other code into thinking that
* this packet has an L4 header. */
flow->nw_proto = 0;
}
}
} else {
retval = 1;
}
}
} else if (flow->dl_type == htons(ETH_TYPE_ARP)) {
struct arp_eth_header *arp = pull_arp(&b);
if (arp) {
if (arp->ar_pro == htons(ARP_PRO_IP) && arp->ar_pln == IP_ADDR_LEN) {
flow->nw_src = arp->ar_spa;
flow->nw_dst = arp->ar_tpa;
}
flow->nw_proto = ntohs(arp->ar_op) & 0xff;
}
}
}
return retval;
}
int
main(int argc OVS_UNUSED, char *argv[])
{
uint64_t buf_stub[4096 / 64];
struct nl_sock *sock;
struct ofpbuf buf;
int error;
set_program_name(argv[0]);
vlog_set_levels(NULL, VLF_ANY_FACILITY, VLL_DBG);
error = nl_sock_create(NETLINK_ROUTE, &sock);
if (error) {
ovs_fatal(error, "could not create rtnetlink socket");
}
error = nl_sock_join_mcgroup(sock, RTNLGRP_LINK);
if (error) {
ovs_fatal(error, "could not join RTNLGRP_LINK multicast group");
}
ofpbuf_use_stub(&buf, buf_stub, sizeof buf_stub);
for (;;) {
error = nl_sock_recv(sock, &buf, false);
if (error == EAGAIN) {
/* Nothing to do. */
} else if (error == ENOBUFS) {
ovs_error(0, "network monitor socket overflowed");
} else if (error) {
ovs_fatal(error, "error on network monitor socket");
} else {
struct iff_flag {
unsigned int flag;
const char *name;
};
static const struct iff_flag flags[] = {
{ IFF_UP, "UP", },
{ IFF_BROADCAST, "BROADCAST", },
#ifndef _WIN32
{ IFF_DEBUG, "DEBUG", },
#endif
{ IFF_LOOPBACK, "LOOPBACK", },
#ifndef _WIN32
{ IFF_POINTOPOINT, "POINTOPOINT", },
{ IFF_NOTRAILERS, "NOTRAILERS", },
#endif
{ IFF_RUNNING, "RUNNING", },
#ifndef _WIN32
{ IFF_NOARP, "NOARP", },
#endif
{ IFF_PROMISC, "PROMISC", },
#ifndef _WIN32
{ IFF_ALLMULTI, "ALLMULTI", },
{ IFF_MASTER, "MASTER", },
{ IFF_SLAVE, "SLAVE", },
#endif
{ IFF_MULTICAST, "MULTICAST", },
#ifndef _WIN32
{ IFF_PORTSEL, "PORTSEL", },
{ IFF_AUTOMEDIA, "AUTOMEDIA", },
{ IFF_DYNAMIC, "DYNAMIC", },
#endif
};
struct nlattr *attrs[ARRAY_SIZE(rtnlgrp_link_policy)];
struct nlmsghdr *nlh;
struct ifinfomsg *iim;
int i;
nlh = ofpbuf_at(&buf, 0, NLMSG_HDRLEN);
iim = ofpbuf_at(&buf, NLMSG_HDRLEN, sizeof *iim);
if (!iim) {
ovs_error(0, "received bad rtnl message (no ifinfomsg)");
continue;
}
if (!nl_policy_parse(&buf, NLMSG_HDRLEN + sizeof(struct ifinfomsg),
rtnlgrp_link_policy,
attrs, ARRAY_SIZE(rtnlgrp_link_policy))) {
ovs_error(0, "received bad rtnl message (policy)");
continue;
}
printf("netdev %s changed (%s):\n",
nl_attr_get_string(attrs[IFLA_IFNAME]),
(nlh->nlmsg_type == RTM_NEWLINK ? "RTM_NEWLINK"
#ifndef _WIN32
: nlh->nlmsg_type == RTM_DELLINK ? "RTM_DELLINK"
#endif
: nlh->nlmsg_type == RTM_GETLINK ? "RTM_GETLINK"
#ifndef _WIN32
: nlh->nlmsg_type == RTM_SETLINK ? "RTM_SETLINK"
#endif
: "other"));
printf("\tflags:");
for (i = 0; i < ARRAY_SIZE(flags); i++) {
if (iim->ifi_flags & flags[i].flag) {
printf(" %s", flags[i].name);
}
}
printf("\n");
if (attrs[IFLA_MASTER]) {
uint32_t idx = nl_attr_get_u32(attrs[IFLA_MASTER]);
char ifname[IFNAMSIZ];
#ifndef _WIN32
if (!if_indextoname(idx, ifname)) {
strcpy(ifname, "unknown");
}
#endif
printf("\tmaster=%"PRIu32" (%s)\n", idx, ifname);
}
}
nl_sock_wait(sock, POLLIN);
poll_block();
}
}
