struct flow_wildcards *wc = &rule->wc;
struct flow *flow = &rule->flow;
+ BUILD_ASSERT_DECL(FLOW_WC_SEQ == 1);
+
switch (f->index) {
/* Metadata. */
case NFI_NXM_OF_IN_PORT:
/* IPv6 Neighbor Discovery. */
case NFI_NXM_NX_ND_TARGET:
/* We've already verified that it's an ICMPv6 message. */
- if ((flow->tp_src != htons(ND_NEIGHBOR_SOLICIT))
+ if ((flow->tp_src != htons(ND_NEIGHBOR_SOLICIT))
&& (flow->tp_src != htons(ND_NEIGHBOR_ADVERT))) {
return NXM_BAD_PREREQ;
}
int match_len;
int i;
+ BUILD_ASSERT_DECL(FLOW_WC_SEQ == 1);
+
/* Metadata. */
if (!(wc & FWW_IN_PORT)) {
uint16_t in_port = flow->in_port;
nxm_check_reg_move(const struct nx_action_reg_move *action,
const struct flow *flow)
{
- const struct nxm_field *src;
- const struct nxm_field *dst;
+ int src_ofs, dst_ofs, n_bits;
+ int error;
- if (action->n_bits == htons(0)) {
- return BAD_ARGUMENT;
- }
+ n_bits = ntohs(action->n_bits);
+ src_ofs = ntohs(action->src_ofs);
+ dst_ofs = ntohs(action->dst_ofs);
- src = nxm_field_lookup(ntohl(action->src));
- if (!field_ok(src, flow, ntohs(action->src_ofs) + ntohs(action->n_bits))) {
- return BAD_ARGUMENT;
- }
+ error = nxm_src_check(action->src, src_ofs, n_bits, flow);
+ error = error ? error : nxm_dst_check(action->dst, dst_ofs, n_bits, flow);
+ return error;
+}
- dst = nxm_field_lookup(ntohl(action->dst));
- if (!field_ok(dst, flow, ntohs(action->dst_ofs) + ntohs(action->n_bits))) {
- return BAD_ARGUMENT;
+/* Given a flow, checks that the source field represented by 'src_header'
+ * in the range ['ofs', 'ofs' + 'n_bits') is valid. */
+int
+nxm_src_check(ovs_be32 src_header, unsigned int ofs, unsigned int n_bits,
+ const struct flow *flow)
+{
+ const struct nxm_field *src = nxm_field_lookup(ntohl(src_header));
+
+ if (!n_bits) {
+ VLOG_WARN_RL(&rl, "zero bit source field");
+ } else if (!field_ok(src, flow, ofs + n_bits)) {
+ VLOG_WARN_RL(&rl, "invalid source field");
+ } else {
+ return 0;
}
- if (!dst->writable) {
- return BAD_ARGUMENT;
+ return BAD_ARGUMENT;
+}
+
+/* Given a flow, checks that the destination field represented by 'dst_header'
+ * in the range ['ofs', 'ofs' + 'n_bits') is valid. */
+int
+nxm_dst_check(ovs_be32 dst_header, unsigned int ofs, unsigned int n_bits,
+ const struct flow *flow)
+{
+ const struct nxm_field *dst = nxm_field_lookup(ntohl(dst_header));
+
+ if (!n_bits) {
+ VLOG_WARN_RL(&rl, "zero bit destination field");
+ } else if (!field_ok(dst, flow, ofs + n_bits)) {
+ VLOG_WARN_RL(&rl, "invalid destination field");
+ } else if (!dst->writable) {
+ VLOG_WARN_RL(&rl, "destination field is not writable");
+ } else {
+ return 0;
}
- return 0;
+ return BAD_ARGUMENT;
}
int
nxm_check_reg_load(const struct nx_action_reg_load *action,
const struct flow *flow)
{
- const struct nxm_field *dst;
- int ofs, n_bits;
+ unsigned int ofs = nxm_decode_ofs(action->ofs_nbits);
+ unsigned int n_bits = nxm_decode_n_bits(action->ofs_nbits);
+ int error;
- ofs = nxm_decode_ofs(action->ofs_nbits);
- n_bits = nxm_decode_n_bits(action->ofs_nbits);
- dst = nxm_field_lookup(ntohl(action->dst));
- if (!field_ok(dst, flow, ofs + n_bits)) {
- return BAD_ARGUMENT;
+ error = nxm_dst_check(action->dst, ofs, n_bits, flow);
+ if (error) {
+ return error;
}
/* Reject 'action' if a bit numbered 'n_bits' or higher is set to 1 in
return BAD_ARGUMENT;
}
- if (!dst->writable) {
- return BAD_ARGUMENT;
- }
-
return 0;
}
\f
uint64_t new_value)
{
switch (dst->index) {
+ case NFI_NXM_OF_ETH_DST:
+ eth_addr_from_uint64(new_value, flow->dl_dst);
+ break;
+
+ case NFI_NXM_OF_ETH_SRC:
+ eth_addr_from_uint64(new_value, flow->dl_src);
+ break;
+
case NFI_NXM_OF_VLAN_TCI:
flow->vlan_tci = htons(new_value);
break;
#error
#endif
- case NFI_NXM_OF_IN_PORT:
- case NFI_NXM_OF_ETH_DST:
- case NFI_NXM_OF_ETH_SRC:
- case NFI_NXM_OF_ETH_TYPE:
case NFI_NXM_OF_IP_TOS:
- case NFI_NXM_OF_IP_PROTO:
- case NFI_NXM_OF_ARP_OP:
+ flow->nw_tos = new_value & IP_DSCP_MASK;
+ break;
+
case NFI_NXM_OF_IP_SRC:
- case NFI_NXM_OF_ARP_SPA:
+ flow->nw_src = htonl(new_value);
+ break;
+
case NFI_NXM_OF_IP_DST:
- case NFI_NXM_OF_ARP_TPA:
+ flow->nw_dst = htonl(new_value);
+ break;
+
case NFI_NXM_OF_TCP_SRC:
case NFI_NXM_OF_UDP_SRC:
+ flow->tp_src = htons(new_value);
+ break;
+
case NFI_NXM_OF_TCP_DST:
case NFI_NXM_OF_UDP_DST:
+ flow->tp_dst = htons(new_value);
+ break;
+
+ case NFI_NXM_OF_IN_PORT:
+ case NFI_NXM_OF_ETH_TYPE:
+ case NFI_NXM_OF_IP_PROTO:
+ case NFI_NXM_OF_ARP_OP:
+ case NFI_NXM_OF_ARP_SPA:
+ case NFI_NXM_OF_ARP_TPA:
case NFI_NXM_OF_ICMP_TYPE:
case NFI_NXM_OF_ICMP_CODE:
case NFI_NXM_NX_TUN_ID_W:
/* Get the interesting bits of the source field. */
const struct nxm_field *src = nxm_field_lookup(ntohl(action->src));
int src_ofs = ntohs(action->src_ofs);
- uint64_t src_data = nxm_read_field(src, flow) & (mask << src_ofs);
-
- /* Get the remaining bits of the destination field. */
- const struct nxm_field *dst = nxm_field_lookup(ntohl(action->dst));
- int dst_ofs = ntohs(action->dst_ofs);
- uint64_t dst_data = nxm_read_field(dst, flow) & ~(mask << dst_ofs);
-
- /* Get the final value. */
- uint64_t new_data = dst_data | ((src_data >> src_ofs) << dst_ofs);
+ uint64_t src_data = (nxm_read_field(src, flow) >> src_ofs) & mask;
- nxm_write_field(dst, flow, new_data);
+ nxm_reg_load(action->dst,
+ nxm_encode_ofs_nbits(ntohs(action->dst_ofs), n_bits),
+ src_data, flow);
}
void
nxm_execute_reg_load(const struct nx_action_reg_load *action,
struct flow *flow)
{
- /* Preparation. */
- int n_bits = nxm_decode_n_bits(action->ofs_nbits);
- uint64_t mask = n_bits == 64 ? UINT64_MAX : (UINT64_C(1) << n_bits) - 1;
+ nxm_reg_load(action->dst, action->ofs_nbits, ntohll(action->value), flow);
+}
- /* Get source data. */
- uint64_t src_data = ntohll(action->value);
+/* Calculates ofs and n_bits from the given 'ofs_nbits' parameter, and copies
+ * 'src_data'[0:n_bits] to 'dst_header'[ofs:ofs+n_bits] in the given 'flow'. */
+void
+nxm_reg_load(ovs_be32 dst_header, ovs_be16 ofs_nbits, uint64_t src_data,
+ struct flow *flow)
+{
+ int n_bits = nxm_decode_n_bits(ofs_nbits);
+ int dst_ofs = nxm_decode_ofs(ofs_nbits);
+ uint64_t mask = n_bits == 64 ? UINT64_MAX : (UINT64_C(1) << n_bits) - 1;
/* Get remaining bits of the destination field. */
- const struct nxm_field *dst = nxm_field_lookup(ntohl(action->dst));
- int dst_ofs = nxm_decode_ofs(action->ofs_nbits);
+ const struct nxm_field *dst = nxm_field_lookup(ntohl(dst_header));
uint64_t dst_data = nxm_read_field(dst, flow) & ~(mask << dst_ofs);
/* Get the final value. */
git://git.onelab.eu / sliver-openvswitch.git / blobdiff