#include "queue.h"
#include "timeval.h"
#include "util.h"
-
#include "vlog.h"
-#define THIS_MODULE VLM_dpif_netdev
+
+VLOG_DEFINE_THIS_MODULE(dpif_netdev)
/* Configuration parameters. */
enum { N_QUEUES = 2 }; /* Number of queues for dpif_recv(). */
flow_t key;
/* Statistics. */
- struct timeval used; /* Last used time, in milliseconds. */
- long long int packet_count; /* Number of packets matched. */
- long long int byte_count; /* Number of bytes matched. */
- uint8_t ip_tos; /* IP TOS value. */
- uint16_t tcp_ctl; /* Bitwise-OR of seen tcp_ctl values. */
+ struct timespec used; /* Last used time. */
+ long long int packet_count; /* Number of packets matched. */
+ long long int byte_count; /* Number of bytes matched. */
+ uint16_t tcp_ctl; /* Bitwise-OR of seen tcp_ctl values. */
/* Actions. */
union odp_action *actions;
static int dp_netdev_output_control(struct dp_netdev *, const struct ofpbuf *,
int queue_no, int port_no, uint32_t arg);
static int dp_netdev_execute_actions(struct dp_netdev *,
- struct ofpbuf *, flow_t *,
+ struct ofpbuf *, const flow_t *,
const union odp_action *, int n);
static struct dpif_netdev *
odp_flow->stats.n_packets = flow->packet_count;
odp_flow->stats.n_bytes = flow->byte_count;
odp_flow->stats.used_sec = flow->used.tv_sec;
- odp_flow->stats.used_nsec = flow->used.tv_usec * 1000;
+ odp_flow->stats.used_nsec = flow->used.tv_nsec;
odp_flow->stats.tcp_flags = TCP_FLAGS(flow->tcp_ctl);
- odp_flow->stats.ip_tos = flow->ip_tos;
+ odp_flow->stats.reserved = 0;
odp_flow->stats.error = 0;
if (odp_flow->n_actions > 0) {
unsigned int n = MIN(odp_flow->n_actions, flow->n_actions);
clear_stats(struct dp_netdev_flow *flow)
{
flow->used.tv_sec = 0;
- flow->used.tv_usec = 0;
+ flow->used.tv_nsec = 0;
flow->packet_count = 0;
flow->byte_count = 0;
- flow->ip_tos = 0;
flow->tcp_ctl = 0;
}
dp_netdev_flow_used(struct dp_netdev_flow *flow, const flow_t *key,
const struct ofpbuf *packet)
{
- time_timeval(&flow->used);
+ time_timespec(&flow->used);
flow->packet_count++;
flow->byte_count += packet->size;
- if (key->dl_type == htons(ETH_TYPE_IP)) {
- struct ip_header *nh = packet->l3;
- flow->ip_tos = nh->ip_tos;
-
- if (key->nw_proto == IPPROTO_TCP) {
- struct tcp_header *th = packet->l4;
- flow->tcp_ctl |= th->tcp_ctl;
- }
+ if (key->dl_type == htons(ETH_TYPE_IP) && key->nw_proto == IPPROTO_TCP) {
+ struct tcp_header *th = packet->l4;
+ flow->tcp_ctl |= th->tcp_ctl;
}
}
struct dp_netdev_flow *flow;
flow_t key;
+ if (packet->size < ETH_HEADER_LEN) {
+ return;
+ }
if (flow_extract(packet, 0, port->port_no, &key) && dp->drop_frags) {
dp->n_frags++;
return;
/* Modify the TCI field of 'packet'. If a VLAN tag is not present, one
- * is added with the TCI field set to 'tci'. If a VLAN tag is present,
+ * is added with the TCI field set to 'tci'. If a VLAN tag is present,
* then 'mask' bits are cleared before 'tci' is logically OR'd into the
* TCI field.
*
* bits outside of 'mask'.
*/
static void
-dp_netdev_modify_vlan_tci(struct ofpbuf *packet, flow_t *key,
- uint16_t tci, uint16_t mask)
+dp_netdev_modify_vlan_tci(struct ofpbuf *packet, uint16_t tci, uint16_t mask)
{
struct vlan_eth_header *veh;
+ struct eth_header *eh;
- if (key->dl_vlan != htons(ODP_VLAN_NONE)) {
+ eh = packet->l2;
+ if (packet->size >= sizeof(struct vlan_eth_header)
+ && eh->eth_type == htons(ETH_TYPE_VLAN)) {
/* Clear 'mask' bits, but maintain other TCI bits. */
veh = packet->l2;
veh->veth_tci &= ~htons(mask);
memcpy(veh, &tmp, sizeof tmp);
packet->l2 = (char*)packet->l2 - VLAN_HEADER_LEN;
}
-
- key->dl_vlan = veh->veth_tci & htons(VLAN_VID_MASK);
}
static void
-dp_netdev_strip_vlan(struct ofpbuf *packet, flow_t *key)
+dp_netdev_strip_vlan(struct ofpbuf *packet)
{
struct vlan_eth_header *veh = packet->l2;
- if (veh->veth_type == htons(ETH_TYPE_VLAN)) {
+ if (packet->size >= sizeof *veh
+ && veh->veth_type == htons(ETH_TYPE_VLAN)) {
struct eth_header tmp;
memcpy(tmp.eth_dst, veh->veth_dst, ETH_ADDR_LEN);
packet->data = (char*)packet->data + VLAN_HEADER_LEN;
packet->l2 = (char*)packet->l2 + VLAN_HEADER_LEN;
memcpy(packet->data, &tmp, sizeof tmp);
-
- key->dl_vlan = htons(ODP_VLAN_NONE);
}
}
static void
-dp_netdev_set_dl_src(struct ofpbuf *packet, flow_t *key,
- const uint8_t dl_addr[ETH_ADDR_LEN])
+dp_netdev_set_dl_src(struct ofpbuf *packet, const uint8_t dl_addr[ETH_ADDR_LEN])
{
struct eth_header *eh = packet->l2;
memcpy(eh->eth_src, dl_addr, sizeof eh->eth_src);
- memcpy(key->dl_src, dl_addr, sizeof key->dl_src);
}
static void
-dp_netdev_set_dl_dst(struct ofpbuf *packet, flow_t *key,
- const uint8_t dl_addr[ETH_ADDR_LEN])
+dp_netdev_set_dl_dst(struct ofpbuf *packet, const uint8_t dl_addr[ETH_ADDR_LEN])
{
struct eth_header *eh = packet->l2;
memcpy(eh->eth_dst, dl_addr, sizeof eh->eth_dst);
- memcpy(key->dl_dst, dl_addr, sizeof key->dl_dst);
+}
+
+static bool
+is_ip(const struct ofpbuf *packet, const flow_t *key)
+{
+ return key->dl_type == htons(ETH_TYPE_IP) && packet->l4;
}
static void
-dp_netdev_set_nw_addr(struct ofpbuf *packet, flow_t *key,
+dp_netdev_set_nw_addr(struct ofpbuf *packet, const flow_t *key,
const struct odp_action_nw_addr *a)
{
- if (key->dl_type == htons(ETH_TYPE_IP)) {
+ if (is_ip(packet, key)) {
struct ip_header *nh = packet->l3;
uint32_t *field;
field = a->type == ODPAT_SET_NW_SRC ? &nh->ip_src : &nh->ip_dst;
- if (key->nw_proto == IP_TYPE_TCP) {
+ if (key->nw_proto == IP_TYPE_TCP && packet->l7) {
struct tcp_header *th = packet->l4;
th->tcp_csum = recalc_csum32(th->tcp_csum, *field, a->nw_addr);
- } else if (key->nw_proto == IP_TYPE_UDP) {
+ } else if (key->nw_proto == IP_TYPE_UDP && packet->l7) {
struct udp_header *uh = packet->l4;
if (uh->udp_csum) {
uh->udp_csum = recalc_csum32(uh->udp_csum, *field, a->nw_addr);
}
nh->ip_csum = recalc_csum32(nh->ip_csum, *field, a->nw_addr);
*field = a->nw_addr;
-
- if (a->type == ODPAT_SET_NW_SRC) {
- key->nw_src = a->type;
- } else {
- key->nw_dst = a->type;
- }
}
}
static void
-dp_netdev_set_nw_tos(struct ofpbuf *packet, flow_t *key,
+dp_netdev_set_nw_tos(struct ofpbuf *packet, const flow_t *key,
const struct odp_action_nw_tos *a)
{
- if (key->dl_type == htons(ETH_TYPE_IP)) {
+ if (is_ip(packet, key)) {
struct ip_header *nh = packet->l3;
uint8_t *field = &nh->ip_tos;
nh->ip_csum = recalc_csum16(nh->ip_csum, htons((uint16_t)*field),
htons((uint16_t)a->nw_tos));
*field = new;
- key->nw_tos = a->nw_tos;
}
}
static void
-dp_netdev_set_tp_port(struct ofpbuf *packet, flow_t *key,
+dp_netdev_set_tp_port(struct ofpbuf *packet, const flow_t *key,
const struct odp_action_tp_port *a)
{
- if (key->dl_type == htons(ETH_TYPE_IP)) {
+ if (is_ip(packet, key)) {
uint16_t *field;
- if (key->nw_proto == IPPROTO_TCP) {
+ if (key->nw_proto == IPPROTO_TCP && packet->l7) {
struct tcp_header *th = packet->l4;
field = a->type == ODPAT_SET_TP_SRC ? &th->tcp_src : &th->tcp_dst;
th->tcp_csum = recalc_csum16(th->tcp_csum, *field, a->tp_port);
*field = a->tp_port;
- } else if (key->nw_proto == IPPROTO_UDP) {
+ } else if (key->nw_proto == IPPROTO_UDP && packet->l7) {
struct udp_header *uh = packet->l4;
field = a->type == ODPAT_SET_TP_SRC ? &uh->udp_src : &uh->udp_dst;
uh->udp_csum = recalc_csum16(uh->udp_csum, *field, a->tp_port);
} else {
return;
}
-
- if (a->type == ODPAT_SET_TP_SRC) {
- key->tp_src = a->tp_port;
- } else {
- key->tp_dst = a->tp_port;
- }
}
}
dp_netdev_output_port(struct dp_netdev *dp, struct ofpbuf *packet,
uint16_t out_port)
{
- struct dp_netdev_port *p = dp->ports[out_port];
+ struct dp_netdev_port *p = dp->ports[out_port];
if (p) {
netdev_send(p->netdev, packet);
}
dp_netdev_output_group(struct dp_netdev *dp, uint16_t group, uint16_t in_port,
struct ofpbuf *packet)
{
- struct odp_port_group *g = &dp->groups[group];
- int i;
+ struct odp_port_group *g = &dp->groups[group];
+ int i;
- for (i = 0; i < g->n_ports; i++) {
+ for (i = 0; i < g->n_ports; i++) {
uint16_t out_port = g->ports[i];
if (out_port != in_port) {
dp_netdev_output_port(dp, packet, out_port);
}
- }
+ }
}
static int
}
msg_size = sizeof *header + packet->size;
- msg = ofpbuf_new(msg_size + DPIF_RECV_MSG_PADDING);
- ofpbuf_reserve(msg, DPIF_RECV_MSG_PADDING);
+ msg = ofpbuf_new_with_headroom(msg_size, DPIF_RECV_MSG_PADDING);
header = ofpbuf_put_uninit(msg, sizeof *header);
header->type = queue_no;
header->length = msg_size;
return 0;
}
+/* Returns true if 'packet' is an invalid Ethernet+IPv4 ARP packet: one with
+ * screwy or truncated header fields or one whose inner and outer Ethernet
+ * address differ. */
+static bool
+dp_netdev_is_spoofed_arp(struct ofpbuf *packet, const struct odp_flow_key *key)
+{
+ struct arp_eth_header *arp;
+ struct eth_header *eth;
+ ptrdiff_t l3_size;
+
+ if (key->dl_type != htons(ETH_TYPE_ARP)) {
+ return false;
+ }
+
+ l3_size = (char *) ofpbuf_end(packet) - (char *) packet->l3;
+ if (l3_size < sizeof(struct arp_eth_header)) {
+ return true;
+ }
+
+ eth = packet->l2;
+ arp = packet->l3;
+ return (arp->ar_hrd != htons(ARP_HRD_ETHERNET)
+ || arp->ar_pro != htons(ARP_PRO_IP)
+ || arp->ar_hln != ETH_HEADER_LEN
+ || arp->ar_pln != 4
+ || !eth_addr_equals(arp->ar_sha, eth->eth_src));
+}
+
static int
dp_netdev_execute_actions(struct dp_netdev *dp,
- struct ofpbuf *packet, flow_t *key,
+ struct ofpbuf *packet, const flow_t *key,
const union odp_action *actions, int n_actions)
{
int i;
for (i = 0; i < n_actions; i++) {
const union odp_action *a = &actions[i];
- switch (a->type) {
- case ODPAT_OUTPUT:
+ switch (a->type) {
+ case ODPAT_OUTPUT:
dp_netdev_output_port(dp, packet, a->output.port);
- break;
+ break;
- case ODPAT_OUTPUT_GROUP:
- dp_netdev_output_group(dp, a->output_group.group, key->in_port,
+ case ODPAT_OUTPUT_GROUP:
+ dp_netdev_output_group(dp, a->output_group.group, key->in_port,
packet);
- break;
+ break;
- case ODPAT_CONTROLLER:
+ case ODPAT_CONTROLLER:
dp_netdev_output_control(dp, packet, _ODPL_ACTION_NR,
key->in_port, a->controller.arg);
- break;
+ break;
- case ODPAT_SET_VLAN_VID:
- dp_netdev_modify_vlan_tci(packet, key, ntohs(a->vlan_vid.vlan_vid),
+ case ODPAT_SET_VLAN_VID:
+ dp_netdev_modify_vlan_tci(packet, ntohs(a->vlan_vid.vlan_vid),
VLAN_VID_MASK);
break;
- case ODPAT_SET_VLAN_PCP:
- dp_netdev_modify_vlan_tci(
- packet, key, a->vlan_pcp.vlan_pcp << VLAN_PCP_SHIFT,
- VLAN_PCP_MASK);
+ case ODPAT_SET_VLAN_PCP:
+ dp_netdev_modify_vlan_tci(packet,
+ a->vlan_pcp.vlan_pcp << VLAN_PCP_SHIFT,
+ VLAN_PCP_MASK);
+ break;
+
+ case ODPAT_STRIP_VLAN:
+ dp_netdev_strip_vlan(packet);
+ break;
+
+ case ODPAT_SET_DL_SRC:
+ dp_netdev_set_dl_src(packet, a->dl_addr.dl_addr);
break;
- case ODPAT_STRIP_VLAN:
- dp_netdev_strip_vlan(packet, key);
- break;
-
- case ODPAT_SET_DL_SRC:
- dp_netdev_set_dl_src(packet, key, a->dl_addr.dl_addr);
- break;
-
- case ODPAT_SET_DL_DST:
- dp_netdev_set_dl_dst(packet, key, a->dl_addr.dl_addr);
- break;
-
- case ODPAT_SET_NW_SRC:
- case ODPAT_SET_NW_DST:
- dp_netdev_set_nw_addr(packet, key, &a->nw_addr);
- break;
-
- case ODPAT_SET_NW_TOS:
- dp_netdev_set_nw_tos(packet, key, &a->nw_tos);
- break;
-
- case ODPAT_SET_TP_SRC:
- case ODPAT_SET_TP_DST:
- dp_netdev_set_tp_port(packet, key, &a->tp_port);
- break;
- }
- }
+ case ODPAT_SET_DL_DST:
+ dp_netdev_set_dl_dst(packet, a->dl_addr.dl_addr);
+ break;
+
+ case ODPAT_SET_NW_SRC:
+ case ODPAT_SET_NW_DST:
+ dp_netdev_set_nw_addr(packet, key, &a->nw_addr);
+ break;
+
+ case ODPAT_SET_NW_TOS:
+ dp_netdev_set_nw_tos(packet, key, &a->nw_tos);
+ break;
+
+ case ODPAT_SET_TP_SRC:
+ case ODPAT_SET_TP_DST:
+ dp_netdev_set_tp_port(packet, key, &a->tp_port);
+ break;
+
+ case ODPAT_DROP_SPOOFED_ARP:
+ if (dp_netdev_is_spoofed_arp(packet, key)) {
+ return 0;
+ }
+ }
+ }
return 0;
}
dpif_netdev_recv_set_mask,
NULL, /* get_sflow_probability */
NULL, /* set_sflow_probability */
+ NULL, /* queue_to_priority */
dpif_netdev_recv,
dpif_netdev_recv_wait,
};
git://git.onelab.eu / sliver-openvswitch.git / blobdiff