--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Chelsio Communications.
+ * All rights reserved.
+ */
+#include "common.h"
+#include "cxgbe_flow.h"
+
+#define __CXGBE_FILL_FS(__v, __m, fs, elem, e) \
+do { \
+ if (!((fs)->val.elem || (fs)->mask.elem)) { \
+ (fs)->val.elem = (__v); \
+ (fs)->mask.elem = (__m); \
+ } else { \
+ return rte_flow_error_set(e, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM, \
+ NULL, "a filter can be specified" \
+ " only once"); \
+ } \
+} while (0)
+
+#define __CXGBE_FILL_FS_MEMCPY(__v, __m, fs, elem) \
+do { \
+ memcpy(&(fs)->val.elem, &(__v), sizeof(__v)); \
+ memcpy(&(fs)->mask.elem, &(__m), sizeof(__m)); \
+} while (0)
+
+#define CXGBE_FILL_FS(v, m, elem) \
+ __CXGBE_FILL_FS(v, m, fs, elem, e)
+
+#define CXGBE_FILL_FS_MEMCPY(v, m, elem) \
+ __CXGBE_FILL_FS_MEMCPY(v, m, fs, elem)
+
+static int
+cxgbe_validate_item(const struct rte_flow_item *i, struct rte_flow_error *e)
+{
+ /* rte_flow specification does not allow it. */
+ if (!i->spec && (i->mask || i->last))
+ return rte_flow_error_set(e, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM,
+ i, "last or mask given without spec");
+ /*
+ * We don't support it.
+ * Although, we can support values in last as 0's or last == spec.
+ * But this will not provide user with any additional functionality
+ * and will only increase the complexity for us.
+ */
+ if (i->last)
+ return rte_flow_error_set(e, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM,
+ i, "last is not supported by chelsio pmd");
+ return 0;
+}
+
+static int
+ch_rte_parsetype_udp(const void *dmask, const struct rte_flow_item *item,
+ struct ch_filter_specification *fs,
+ struct rte_flow_error *e)
+{
+ const struct rte_flow_item_udp *val = item->spec;
+ const struct rte_flow_item_udp *umask = item->mask;
+ const struct rte_flow_item_udp *mask;
+
+ mask = umask ? umask : (const struct rte_flow_item_udp *)dmask;
+
+ if (mask->hdr.dgram_len || mask->hdr.dgram_cksum)
+ return rte_flow_error_set(e, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM,
+ item,
+ "udp: only src/dst port supported");
+
+ CXGBE_FILL_FS(IPPROTO_UDP, 0xff, proto);
+ if (!val)
+ return 0;
+ CXGBE_FILL_FS(be16_to_cpu(val->hdr.src_port),
+ be16_to_cpu(mask->hdr.src_port), fport);
+ CXGBE_FILL_FS(be16_to_cpu(val->hdr.dst_port),
+ be16_to_cpu(mask->hdr.dst_port), lport);
+ return 0;
+}
+
+static int
+ch_rte_parsetype_tcp(const void *dmask, const struct rte_flow_item *item,
+ struct ch_filter_specification *fs,
+ struct rte_flow_error *e)
+{
+ const struct rte_flow_item_tcp *val = item->spec;
+ const struct rte_flow_item_tcp *umask = item->mask;
+ const struct rte_flow_item_tcp *mask;
+
+ mask = umask ? umask : (const struct rte_flow_item_tcp *)dmask;
+
+ if (mask->hdr.sent_seq || mask->hdr.recv_ack || mask->hdr.data_off ||
+ mask->hdr.tcp_flags || mask->hdr.rx_win || mask->hdr.cksum ||
+ mask->hdr.tcp_urp)
+ return rte_flow_error_set(e, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM,
+ item,
+ "tcp: only src/dst port supported");
+
+ CXGBE_FILL_FS(IPPROTO_TCP, 0xff, proto);
+ if (!val)
+ return 0;
+ CXGBE_FILL_FS(be16_to_cpu(val->hdr.src_port),
+ be16_to_cpu(mask->hdr.src_port), fport);
+ CXGBE_FILL_FS(be16_to_cpu(val->hdr.dst_port),
+ be16_to_cpu(mask->hdr.dst_port), lport);
+ return 0;
+}
+
+static int
+ch_rte_parsetype_ipv4(const void *dmask, const struct rte_flow_item *item,
+ struct ch_filter_specification *fs,
+ struct rte_flow_error *e)
+{
+ const struct rte_flow_item_ipv4 *val = item->spec;
+ const struct rte_flow_item_ipv4 *umask = item->mask;
+ const struct rte_flow_item_ipv4 *mask;
+
+ mask = umask ? umask : (const struct rte_flow_item_ipv4 *)dmask;
+
+ if (mask->hdr.time_to_live || mask->hdr.type_of_service)
+ return rte_flow_error_set(e, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM,
+ item, "ttl/tos are not supported");
+
+ fs->type = FILTER_TYPE_IPV4;
+ CXGBE_FILL_FS(ETHER_TYPE_IPv4, 0xffff, ethtype);
+ if (!val)
+ return 0; /* ipv4 wild card */
+
+ CXGBE_FILL_FS(val->hdr.next_proto_id, mask->hdr.next_proto_id, proto);
+ CXGBE_FILL_FS_MEMCPY(val->hdr.dst_addr, mask->hdr.dst_addr, lip);
+ CXGBE_FILL_FS_MEMCPY(val->hdr.src_addr, mask->hdr.src_addr, fip);
+
+ return 0;
+}
+
+static int
+ch_rte_parsetype_ipv6(const void *dmask, const struct rte_flow_item *item,
+ struct ch_filter_specification *fs,
+ struct rte_flow_error *e)
+{
+ const struct rte_flow_item_ipv6 *val = item->spec;
+ const struct rte_flow_item_ipv6 *umask = item->mask;
+ const struct rte_flow_item_ipv6 *mask;
+
+ mask = umask ? umask : (const struct rte_flow_item_ipv6 *)dmask;
+
+ if (mask->hdr.vtc_flow ||
+ mask->hdr.payload_len || mask->hdr.hop_limits)
+ return rte_flow_error_set(e, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM,
+ item,
+ "tc/flow/hop are not supported");
+
+ fs->type = FILTER_TYPE_IPV6;
+ CXGBE_FILL_FS(ETHER_TYPE_IPv6, 0xffff, ethtype);
+ if (!val)
+ return 0; /* ipv6 wild card */
+
+ CXGBE_FILL_FS(val->hdr.proto, mask->hdr.proto, proto);
+ CXGBE_FILL_FS_MEMCPY(val->hdr.dst_addr, mask->hdr.dst_addr, lip);
+ CXGBE_FILL_FS_MEMCPY(val->hdr.src_addr, mask->hdr.src_addr, fip);
+
+ return 0;
+}
+
+static int
+cxgbe_rtef_parse_attr(struct rte_flow *flow, const struct rte_flow_attr *attr,
+ struct rte_flow_error *e)
+{
+ if (attr->egress)
+ return rte_flow_error_set(e, ENOTSUP, RTE_FLOW_ERROR_TYPE_ATTR,
+ attr, "attribute:<egress> is"
+ " not supported !");
+ if (attr->group > 0)
+ return rte_flow_error_set(e, ENOTSUP, RTE_FLOW_ERROR_TYPE_ATTR,
+ attr, "group parameter is"
+ " not supported.");
+
+ flow->fidx = attr->priority ? attr->priority - 1 : FILTER_ID_MAX;
+
+ return 0;
+}
+
+static inline int check_rxq(struct rte_eth_dev *dev, uint16_t rxq)
+{
+ struct port_info *pi = ethdev2pinfo(dev);
+
+ if (rxq > pi->n_rx_qsets)
+ return -EINVAL;
+ return 0;
+}
+
+static int cxgbe_validate_fidxondel(struct filter_entry *f, unsigned int fidx)
+{
+ struct adapter *adap = ethdev2adap(f->dev);
+ struct ch_filter_specification fs = f->fs;
+
+ if (fidx >= adap->tids.nftids) {
+ dev_err(adap, "invalid flow index %d.\n", fidx);
+ return -EINVAL;
+ }
+ if (!is_filter_set(&adap->tids, fidx, fs.type)) {
+ dev_err(adap, "Already free fidx:%d f:%p\n", fidx, f);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int
+cxgbe_validate_fidxonadd(struct ch_filter_specification *fs,
+ struct adapter *adap, unsigned int fidx)
+{
+ if (is_filter_set(&adap->tids, fidx, fs->type)) {
+ dev_err(adap, "filter index: %d is busy.\n", fidx);
+ return -EBUSY;
+ }
+ if (fidx >= adap->tids.nftids) {
+ dev_err(adap, "filter index (%u) >= max(%u)\n",
+ fidx, adap->tids.nftids);
+ return -ERANGE;
+ }
+
+ return 0;
+}
+
+static int
+cxgbe_verify_fidx(struct rte_flow *flow, unsigned int fidx, uint8_t del)
+{
+ return del ? cxgbe_validate_fidxondel(flow->f, fidx) :
+ cxgbe_validate_fidxonadd(&flow->fs,
+ ethdev2adap(flow->dev), fidx);
+}
+
+static int cxgbe_get_fidx(struct rte_flow *flow, unsigned int *fidx)
+{
+ struct ch_filter_specification *fs = &flow->fs;
+ struct adapter *adap = ethdev2adap(flow->dev);
+
+ /* For tcam get the next available slot, if default value specified */
+ if (flow->fidx == FILTER_ID_MAX) {
+ int idx;
+
+ idx = cxgbe_alloc_ftid(adap, fs->type);
+ if (idx < 0) {
+ dev_err(adap, "unable to get a filter index in tcam\n");
+ return -ENOMEM;
+ }
+ *fidx = (unsigned int)idx;
+ } else {
+ *fidx = flow->fidx;
+ }
+
+ return 0;
+}
+
+static int
+cxgbe_rtef_parse_actions(struct rte_flow *flow,
+ const struct rte_flow_action action[],
+ struct rte_flow_error *e)
+{
+ struct ch_filter_specification *fs = &flow->fs;
+ const struct rte_flow_action_queue *q;
+ const struct rte_flow_action *a;
+ char abit = 0;
+
+ for (a = action; a->type != RTE_FLOW_ACTION_TYPE_END; a++) {
+ switch (a->type) {
+ case RTE_FLOW_ACTION_TYPE_VOID:
+ continue;
+ case RTE_FLOW_ACTION_TYPE_DROP:
+ if (abit++)
+ return rte_flow_error_set(e, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION, a,
+ "specify only 1 pass/drop");
+ fs->action = FILTER_DROP;
+ break;
+ case RTE_FLOW_ACTION_TYPE_QUEUE:
+ q = (const struct rte_flow_action_queue *)a->conf;
+ if (!q)
+ return rte_flow_error_set(e, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION, q,
+ "specify rx queue index");
+ if (check_rxq(flow->dev, q->index))
+ return rte_flow_error_set(e, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION, q,
+ "Invalid rx queue");
+ if (abit++)
+ return rte_flow_error_set(e, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION, a,
+ "specify only 1 pass/drop");
+ fs->action = FILTER_PASS;
+ fs->dirsteer = 1;
+ fs->iq = q->index;
+ break;
+ case RTE_FLOW_ACTION_TYPE_COUNT:
+ fs->hitcnts = 1;
+ break;
+ default:
+ /* Not supported action : return error */
+ return rte_flow_error_set(e, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ a, "Action not supported");
+ }
+ }
+
+ return 0;
+}
+
+struct chrte_fparse parseitem[] = {
+ [RTE_FLOW_ITEM_TYPE_IPV4] = {
+ .fptr = ch_rte_parsetype_ipv4,
+ .dmask = &rte_flow_item_ipv4_mask,
+ },
+
+ [RTE_FLOW_ITEM_TYPE_IPV6] = {
+ .fptr = ch_rte_parsetype_ipv6,
+ .dmask = &rte_flow_item_ipv6_mask,
+ },
+
+ [RTE_FLOW_ITEM_TYPE_UDP] = {
+ .fptr = ch_rte_parsetype_udp,
+ .dmask = &rte_flow_item_udp_mask,
+ },
+
+ [RTE_FLOW_ITEM_TYPE_TCP] = {
+ .fptr = ch_rte_parsetype_tcp,
+ .dmask = &rte_flow_item_tcp_mask,
+ },
+};
+
+static int
+cxgbe_rtef_parse_items(struct rte_flow *flow,
+ const struct rte_flow_item items[],
+ struct rte_flow_error *e)
+{
+ const struct rte_flow_item *i;
+ char repeat[ARRAY_SIZE(parseitem)] = {0};
+
+ for (i = items; i->type != RTE_FLOW_ITEM_TYPE_END; i++) {
+ struct chrte_fparse *idx = &flow->item_parser[i->type];
+ int ret;
+
+ if (i->type > ARRAY_SIZE(parseitem))
+ return rte_flow_error_set(e, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ i, "Item not supported");
+
+ switch (i->type) {
+ case RTE_FLOW_ITEM_TYPE_VOID:
+ continue;
+ default:
+ /* check if item is repeated */
+ if (repeat[i->type])
+ return rte_flow_error_set(e, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ITEM, i,
+ "parse items cannot be repeated (except void)");
+ repeat[i->type] = 1;
+
+ /* validate the item */
+ ret = cxgbe_validate_item(i, e);
+ if (ret)
+ return ret;
+
+ if (!idx || !idx->fptr) {
+ return rte_flow_error_set(e, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ITEM, i,
+ "Item not supported");
+ } else {
+ ret = idx->fptr(idx->dmask, i, &flow->fs, e);
+ if (ret)
+ return ret;
+ }
+ }
+ }
+
+ return 0;
+}
+
+static int
+cxgbe_flow_parse(struct rte_flow *flow,
+ const struct rte_flow_attr *attr,
+ const struct rte_flow_item item[],
+ const struct rte_flow_action action[],
+ struct rte_flow_error *e)
+{
+ int ret;
+
+ /* parse user request into ch_filter_specification */
+ ret = cxgbe_rtef_parse_attr(flow, attr, e);
+ if (ret)
+ return ret;
+ ret = cxgbe_rtef_parse_items(flow, item, e);
+ if (ret)
+ return ret;
+ return cxgbe_rtef_parse_actions(flow, action, e);
+}
+
+static int
+cxgbe_flow_validate(struct rte_eth_dev *dev,
+ const struct rte_flow_attr *attr,
+ const struct rte_flow_item item[],
+ const struct rte_flow_action action[],
+ struct rte_flow_error *e)
+{
+ struct adapter *adap = ethdev2adap(dev);
+ struct rte_flow *flow;
+ unsigned int fidx;
+ int ret;
+
+ flow = t4_os_alloc(sizeof(struct rte_flow));
+ if (!flow)
+ return rte_flow_error_set(e, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
+ NULL,
+ "Unable to allocate memory for filter_entry");
+
+ flow->item_parser = parseitem;
+ flow->dev = dev;
+
+ ret = cxgbe_flow_parse(flow, attr, item, action, e);
+ if (ret) {
+ t4_os_free(flow);
+ return ret;
+ }
+
+ if (validate_filter(adap, &flow->fs)) {
+ t4_os_free(flow);
+ return rte_flow_error_set(e, EINVAL, RTE_FLOW_ERROR_TYPE_HANDLE,
+ NULL,
+ "validation failed. Check f/w config file.");
+ }
+
+ if (cxgbe_get_fidx(flow, &fidx)) {
+ t4_os_free(flow);
+ return rte_flow_error_set(e, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
+ NULL, "no memory in tcam.");
+ }
+
+ if (cxgbe_verify_fidx(flow, fidx, 0)) {
+ t4_os_free(flow);
+ return rte_flow_error_set(e, EINVAL, RTE_FLOW_ERROR_TYPE_HANDLE,
+ NULL, "validation failed");
+ }
+
+ t4_os_free(flow);
+ return 0;
+}
+
+static const struct rte_flow_ops cxgbe_flow_ops = {
+ .validate = cxgbe_flow_validate,
+ .create = NULL,
+ .destroy = NULL,
+ .flush = NULL,
+ .query = NULL,
+ .isolate = NULL,
+};
+
+int
+cxgbe_dev_filter_ctrl(struct rte_eth_dev *dev,
+ enum rte_filter_type filter_type,
+ enum rte_filter_op filter_op,
+ void *arg)
+{
+ int ret = 0;
+
+ RTE_SET_USED(dev);
+ switch (filter_type) {
+ case RTE_ETH_FILTER_GENERIC:
+ if (filter_op != RTE_ETH_FILTER_GET)
+ return -EINVAL;
+ *(const void **)arg = &cxgbe_flow_ops;
+ break;
+ default:
+ ret = -ENOTSUP;
+ break;
+ }
+ return ret;
+}
git.droids-corp.org / dpdk.git / commitdiff