#include "dynamic-string.h"
#include "flow.h"
#include "netlink.h"
+#include "ofpbuf.h"
#include "openvswitch/tunnel.h"
#include "packets.h"
#include "timeval.h"
}
}
+static int
+put_nd_key(int n, const char *nd_target_s,
+ const uint8_t *nd_sll, const uint8_t *nd_tll, struct ofpbuf *key)
+{
+ struct odp_key_nd nd_key;
+
+ memset(&nd_key, 0, sizeof nd_key);
+ if (inet_pton(AF_INET6, nd_target_s, nd_key.nd_target) != 1) {
+ return -EINVAL;
+ }
+ if (nd_sll) {
+ memcpy(nd_key.nd_sll, nd_sll, ETH_ADDR_LEN);
+ }
+ if (nd_tll) {
+ memcpy(nd_key.nd_tll, nd_tll, ETH_ADDR_LEN);
+ }
+ nl_msg_put_unspec(key, ODP_KEY_ATTR_ND, &nd_key, sizeof nd_key);
+ return n;
+}
+
+static int
+parse_odp_key_attr(const char *s, struct ofpbuf *key)
+{
+ /* Many of the sscanf calls in this function use oversized destination
+ * fields because some sscanf() implementations truncate the range of %i
+ * directives, so that e.g. "%"SCNi16 interprets input of "0xfedc" as a
+ * value of 0x7fff. The other alternatives are to allow only a single
+ * radix (e.g. decimal or hexadecimal) or to write more sophisticated
+ * parsers.
+ *
+ * The tun_id parser has to use an alternative approach because there is no
+ * type larger than 64 bits. */
+
+ {
+ char tun_id_s[32];
+ int n = -1;
+
+ if (sscanf(s, "tun_id(%31[x0123456789abcdefABCDEF])%n",
+ tun_id_s, &n) > 0 && n > 0) {
+ uint64_t tun_id = strtoull(tun_id_s, NULL, 0);
+ nl_msg_put_be64(key, ODP_KEY_ATTR_TUN_ID, htonll(tun_id));
+ return n;
+ }
+ }
+
+ {
+ unsigned long long int in_port;
+ int n = -1;
+
+ if (sscanf(s, "in_port(%lli)%n", &in_port, &n) > 0 && n > 0) {
+ nl_msg_put_u32(key, ODP_KEY_ATTR_IN_PORT, in_port);
+ return n;
+ }
+ }
+
+ {
+ struct odp_key_ethernet eth_key;
+ int n = -1;
+
+ if (sscanf(s,
+ "eth(src="ETH_ADDR_SCAN_FMT",dst="ETH_ADDR_SCAN_FMT")%n",
+ ETH_ADDR_SCAN_ARGS(eth_key.eth_src),
+ ETH_ADDR_SCAN_ARGS(eth_key.eth_dst), &n) > 0 && n > 0) {
+ nl_msg_put_unspec(key, ODP_KEY_ATTR_ETHERNET,
+ ð_key, sizeof eth_key);
+ return n;
+ }
+ }
+
+ {
+ uint16_t tpid = ETH_TYPE_VLAN;
+ uint16_t vid;
+ int pcp;
+ int n = -1;
+
+ if ((sscanf(s, "vlan(vid=%"SCNi16",pcp=%i)%n",
+ &vid, &pcp, &n) > 0 && n > 0) ||
+ (sscanf(s, "vlan(tpid=%"SCNi16",vid=%"SCNi16",pcp=%i)%n",
+ &tpid, &vid, &pcp, &n) > 0 && n > 0)) {
+ struct odp_key_8021q q_key;
+
+ q_key.q_tpid = htons(tpid);
+ q_key.q_tci = htons((vid << VLAN_VID_SHIFT) |
+ (pcp << VLAN_PCP_SHIFT));
+ nl_msg_put_unspec(key, ODP_KEY_ATTR_8021Q, &q_key, sizeof q_key);
+ return n;
+ }
+ }
+
+ {
+ uint16_t eth_type;
+ int n = -1;
+
+ if (sscanf(s, "eth_type(%"SCNi16")%n", ð_type, &n) > 0 && n > 0) {
+ nl_msg_put_be16(key, ODP_KEY_ATTR_ETHERTYPE, htons(eth_type));
+ return n;
+ }
+ }
+
+ {
+ ovs_be32 ipv4_src;
+ ovs_be32 ipv4_dst;
+ int ipv4_proto;
+ int ipv4_tos;
+ int n = -1;
+
+ if (sscanf(s, "ipv4(src="IP_SCAN_FMT",dst="IP_SCAN_FMT","
+ "proto=%i,tos=%i)%n",
+ IP_SCAN_ARGS(&ipv4_src),
+ IP_SCAN_ARGS(&ipv4_dst), &ipv4_proto, &ipv4_tos, &n) > 0
+ && n > 0) {
+ struct odp_key_ipv4 ipv4_key;
+
+ memset(&ipv4_key, 0, sizeof ipv4_key);
+ ipv4_key.ipv4_src = ipv4_src;
+ ipv4_key.ipv4_dst = ipv4_dst;
+ ipv4_key.ipv4_proto = ipv4_proto;
+ ipv4_key.ipv4_tos = ipv4_tos;
+ nl_msg_put_unspec(key, ODP_KEY_ATTR_IPV4,
+ &ipv4_key, sizeof ipv4_key);
+ return n;
+ }
+ }
+
+ {
+ char ipv6_src_s[IPV6_SCAN_LEN + 1];
+ char ipv6_dst_s[IPV6_SCAN_LEN + 1];
+ int ipv6_proto;
+ int ipv6_tos;
+ int n = -1;
+
+ if (sscanf(s, "ipv6(src="IPV6_SCAN_FMT",dst="IPV6_SCAN_FMT","
+ "proto=%i,tos=%i)%n",
+ ipv6_src_s, ipv6_dst_s,
+ &ipv6_proto, &ipv6_tos, &n) > 0 && n > 0) {
+ struct odp_key_ipv6 ipv6_key;
+
+ memset(&ipv6_key, 0, sizeof ipv6_key);
+ if (inet_pton(AF_INET6, ipv6_src_s, &ipv6_key.ipv6_src) != 1 ||
+ inet_pton(AF_INET6, ipv6_dst_s, &ipv6_key.ipv6_dst) != 1) {
+ return -EINVAL;
+ }
+ ipv6_key.ipv6_proto = ipv6_proto;
+ ipv6_key.ipv6_tos = ipv6_tos;
+ nl_msg_put_unspec(key, ODP_KEY_ATTR_IPV6,
+ &ipv6_key, sizeof ipv6_key);
+ return n;
+ }
+ }
+
+ {
+ int tcp_src;
+ int tcp_dst;
+ int n = -1;
+
+ if (sscanf(s, "tcp(src=%i,dst=%i)%n",&tcp_src, &tcp_dst, &n) > 0
+ && n > 0) {
+ struct odp_key_tcp tcp_key;
+
+ tcp_key.tcp_src = htons(tcp_src);
+ tcp_key.tcp_dst = htons(tcp_dst);
+ nl_msg_put_unspec(key, ODP_KEY_ATTR_TCP, &tcp_key, sizeof tcp_key);
+ return n;
+ }
+ }
+
+ {
+ int udp_src;
+ int udp_dst;
+ int n = -1;
+
+ if (sscanf(s, "udp(src=%i,dst=%i)%n", &udp_src, &udp_dst, &n) > 0
+ && n > 0) {
+ struct odp_key_udp udp_key;
+
+ udp_key.udp_src = htons(udp_src);
+ udp_key.udp_dst = htons(udp_dst);
+ nl_msg_put_unspec(key, ODP_KEY_ATTR_UDP, &udp_key, sizeof udp_key);
+ return n;
+ }
+ }
+
+ {
+ int icmp_type;
+ int icmp_code;
+ int n = -1;
+
+ if (sscanf(s, "icmp(type=%i,code=%i)%n",
+ &icmp_type, &icmp_code, &n) > 0
+ && n > 0) {
+ struct odp_key_icmp icmp_key;
+
+ icmp_key.icmp_type = icmp_type;
+ icmp_key.icmp_code = icmp_code;
+ nl_msg_put_unspec(key, ODP_KEY_ATTR_ICMP,
+ &icmp_key, sizeof icmp_key);
+ return n;
+ }
+ }
+
+ {
+ struct odp_key_icmpv6 icmpv6_key;
+ int n = -1;
+
+ if (sscanf(s, "icmpv6(type=%"SCNi8",code=%"SCNi8")%n",
+ &icmpv6_key.icmpv6_type, &icmpv6_key.icmpv6_code,&n) > 0
+ && n > 0) {
+ nl_msg_put_unspec(key, ODP_KEY_ATTR_ICMPV6,
+ &icmpv6_key, sizeof icmpv6_key);
+ return n;
+ }
+ }
+
+ {
+ ovs_be32 arp_sip;
+ ovs_be32 arp_tip;
+ int arp_op;
+ uint8_t arp_sha[ETH_ADDR_LEN];
+ uint8_t arp_tha[ETH_ADDR_LEN];
+ int n = -1;
+
+ if (sscanf(s, "arp(sip="IP_SCAN_FMT",tip="IP_SCAN_FMT","
+ "op=%i,sha="ETH_ADDR_SCAN_FMT",tha="ETH_ADDR_SCAN_FMT")%n",
+ IP_SCAN_ARGS(&arp_sip),
+ IP_SCAN_ARGS(&arp_tip),
+ &arp_op,
+ ETH_ADDR_SCAN_ARGS(arp_sha),
+ ETH_ADDR_SCAN_ARGS(arp_tha), &n) > 0 && n > 0) {
+ struct odp_key_arp arp_key;
+
+ memset(&arp_key, 0, sizeof arp_key);
+ arp_key.arp_sip = arp_sip;
+ arp_key.arp_tip = arp_tip;
+ arp_key.arp_op = htons(arp_op);
+ memcpy(arp_key.arp_sha, arp_sha, ETH_ADDR_LEN);
+ memcpy(arp_key.arp_tha, arp_tha, ETH_ADDR_LEN);
+ nl_msg_put_unspec(key, ODP_KEY_ATTR_ARP, &arp_key, sizeof arp_key);
+ return n;
+ }
+ }
+
+ {
+ char nd_target_s[IPV6_SCAN_LEN + 1];
+ uint8_t nd_sll[ETH_ADDR_LEN];
+ uint8_t nd_tll[ETH_ADDR_LEN];
+ int n = -1;
+
+ if (sscanf(s, "nd(target="IPV6_SCAN_FMT")%n",
+ nd_target_s, &n) > 0 && n > 0) {
+ return put_nd_key(n, nd_target_s, NULL, NULL, key);
+ }
+ if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT")%n",
+ nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll), &n) > 0
+ && n > 0) {
+ return put_nd_key(n, nd_target_s, nd_sll, NULL, key);
+ }
+ if (sscanf(s, "nd(target="IPV6_SCAN_FMT",tll="ETH_ADDR_SCAN_FMT")%n",
+ nd_target_s, ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0
+ && n > 0) {
+ return put_nd_key(n, nd_target_s, NULL, nd_tll, key);
+ }
+ if (sscanf(s, "nd(target="IPV6_SCAN_FMT",sll="ETH_ADDR_SCAN_FMT","
+ "tll="ETH_ADDR_SCAN_FMT")%n",
+ nd_target_s, ETH_ADDR_SCAN_ARGS(nd_sll),
+ ETH_ADDR_SCAN_ARGS(nd_tll), &n) > 0
+ && n > 0) {
+ return put_nd_key(n, nd_target_s, nd_sll, nd_tll, key);
+ }
+ }
+
+ return -EINVAL;
+}
+
+/* Parses the string representation of an ODP flow key, in the format output by
+ * odp_flow_key_format(). Returns 0 if successful, otherwise a positive errno
+ * value. On success, the flow key is appended to 'key' as a series of Netlink
+ * attributes. On failure, no data is appended to 'key'. Either way, 'key''s
+ * data might be reallocated.
+ *
+ * On success, the attributes appended to 'key' are individually syntactically
+ * valid, but they may not be valid as a sequence. 'key' might, for example,
+ * be missing an "in_port" key, have duplicated keys, or have keys in the wrong
+ * order. odp_flow_key_to_flow() will detect those errors. */
+int
+odp_flow_key_from_string(const char *s, struct ofpbuf *key)
+{
+ const size_t old_size = key->size;
+ for (;;) {
+ int retval;
+
+ s += strspn(s, ", \t\r\n");
+ if (!*s) {
+ return 0;
+ }
+
+ retval = parse_odp_key_attr(s, key);
+ if (retval < 0) {
+ key->size = old_size;
+ return -retval;
+ }
+ s += retval;
+ }
+
+ return 0;
+}
+
/* Appends a representation of 'flow' as ODP_KEY_ATTR_* attributes to 'buf'. */
void
odp_flow_key_from_flow(struct ofpbuf *buf, const struct flow *flow)
memcpy(arp_key->arp_sha, flow->arp_sha, ETH_ADDR_LEN);
memcpy(arp_key->arp_tha, flow->arp_tha, ETH_ADDR_LEN);
}
-
+
if (flow->dl_type == htons(ETH_TYPE_IP)
|| flow->dl_type == htons(ETH_TYPE_IPV6)) {
git://git.onelab.eu / sliver-openvswitch.git / blobdiff