* for Solarflare) and Solarflare Communications, Inc.
*/
+#include <rte_byteorder.h>
#include <rte_tailq.h>
#include <rte_common.h>
#include <rte_ethdev_driver.h>
/*
* At now flow API is implemented in such a manner that each
- * flow rule is converted to a hardware filter.
+ * flow rule is converted to one or more hardware filters.
* All elements of flow rule (attributes, pattern items, actions)
* correspond to one or more fields in the efx_filter_spec_s structure
* that is responsible for the hardware filter.
+ * If some required field is unset in the flow rule, then a handful
+ * of filter copies will be created to cover all possible values
+ * of such a field.
*/
enum sfc_flow_item_layers {
static sfc_flow_item_parse sfc_flow_parse_geneve;
static sfc_flow_item_parse sfc_flow_parse_nvgre;
+typedef int (sfc_flow_spec_set_vals)(struct sfc_flow_spec *spec,
+ unsigned int filters_count_for_one_val,
+ struct rte_flow_error *error);
+
+typedef boolean_t (sfc_flow_spec_check)(efx_filter_match_flags_t match,
+ efx_filter_spec_t *spec,
+ struct sfc_filter *filter);
+
+struct sfc_flow_copy_flag {
+ /* EFX filter specification match flag */
+ efx_filter_match_flags_t flag;
+ /* Number of values of corresponding field */
+ unsigned int vals_count;
+ /* Function to set values in specifications */
+ sfc_flow_spec_set_vals *set_vals;
+ /*
+ * Function to check that the specification is suitable
+ * for adding this match flag
+ */
+ sfc_flow_spec_check *spec_check;
+};
+
+static sfc_flow_spec_set_vals sfc_flow_set_unknown_dst_flags;
+static sfc_flow_spec_check sfc_flow_check_unknown_dst_flags;
+static sfc_flow_spec_set_vals sfc_flow_set_ethertypes;
+static sfc_flow_spec_set_vals sfc_flow_set_ifrm_unknown_dst_flags;
+static sfc_flow_spec_check sfc_flow_check_ifrm_unknown_dst_flags;
+
static boolean_t
sfc_flow_is_zero(const uint8_t *buf, unsigned int size)
{
* Convert Ethernet item to EFX filter specification.
*
* @param item[in]
- * Item specification. Only source and destination addresses and
- * Ethernet type fields are supported. In addition to full and
- * empty masks of destination address, individual/group mask is
- * also supported. If the mask is NULL, default mask will be used.
- * Ranging is not supported.
+ * Item specification. Outer frame specification may only comprise
+ * source/destination addresses and Ethertype field.
+ * Inner frame specification may contain destination address only.
+ * There is support for individual/group mask as well as for empty and full.
+ * If the mask is NULL, default mask will be used. Ranging is not supported.
* @param efx_spec[in, out]
* EFX filter specification to update.
* @param[out] error
.src.addr_bytes = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
.type = 0xffff,
};
+ const struct rte_flow_item_eth ifrm_supp_mask = {
+ .dst.addr_bytes = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
+ };
const uint8_t ig_mask[EFX_MAC_ADDR_LEN] = {
0x01, 0x00, 0x00, 0x00, 0x00, 0x00
};
+ const struct rte_flow_item_eth *supp_mask_p;
+ const struct rte_flow_item_eth *def_mask_p;
+ uint8_t *loc_mac = NULL;
+ boolean_t is_ifrm = (efx_spec->efs_encap_type !=
+ EFX_TUNNEL_PROTOCOL_NONE);
+
+ if (is_ifrm) {
+ supp_mask_p = &ifrm_supp_mask;
+ def_mask_p = &ifrm_supp_mask;
+ loc_mac = efx_spec->efs_ifrm_loc_mac;
+ } else {
+ supp_mask_p = &supp_mask;
+ def_mask_p = &rte_flow_item_eth_mask;
+ loc_mac = efx_spec->efs_loc_mac;
+ }
rc = sfc_flow_parse_init(item,
(const void **)&spec,
(const void **)&mask,
- &supp_mask,
- &rte_flow_item_eth_mask,
+ supp_mask_p, def_mask_p,
sizeof(struct rte_flow_item_eth),
error);
if (rc != 0)
return 0;
if (is_same_ether_addr(&mask->dst, &supp_mask.dst)) {
- efx_spec->efs_match_flags |= EFX_FILTER_MATCH_LOC_MAC;
- rte_memcpy(efx_spec->efs_loc_mac, spec->dst.addr_bytes,
+ efx_spec->efs_match_flags |= is_ifrm ?
+ EFX_FILTER_MATCH_IFRM_LOC_MAC :
+ EFX_FILTER_MATCH_LOC_MAC;
+ rte_memcpy(loc_mac, spec->dst.addr_bytes,
EFX_MAC_ADDR_LEN);
} else if (memcmp(mask->dst.addr_bytes, ig_mask,
EFX_MAC_ADDR_LEN) == 0) {
if (is_unicast_ether_addr(&spec->dst))
- efx_spec->efs_match_flags |=
+ efx_spec->efs_match_flags |= is_ifrm ?
+ EFX_FILTER_MATCH_IFRM_UNKNOWN_UCAST_DST :
EFX_FILTER_MATCH_UNKNOWN_UCAST_DST;
else
- efx_spec->efs_match_flags |=
+ efx_spec->efs_match_flags |= is_ifrm ?
+ EFX_FILTER_MATCH_IFRM_UNKNOWN_MCAST_DST :
EFX_FILTER_MATCH_UNKNOWN_MCAST_DST;
} else if (!is_zero_ether_addr(&mask->dst)) {
goto fail_bad_mask;
}
+ /*
+ * ifrm_supp_mask ensures that the source address and
+ * ethertype masks are equal to zero in inner frame,
+ * so these fields are filled in only for the outer frame
+ */
if (is_same_ether_addr(&mask->src, &supp_mask.src)) {
efx_spec->efs_match_flags |= EFX_FILTER_MATCH_REM_MAC;
rte_memcpy(efx_spec->efs_rem_mac, spec->src.addr_bytes,
const struct rte_flow_item_vlan *mask = NULL;
const struct rte_flow_item_vlan supp_mask = {
.tci = rte_cpu_to_be_16(ETH_VLAN_ID_MAX),
+ .inner_type = RTE_BE16(0xffff),
};
rc = sfc_flow_parse_init(item,
return -rte_errno;
}
+ if (efx_spec->efs_match_flags & EFX_FILTER_MATCH_ETHER_TYPE) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM, item,
+ "VLAN TPID matching is not supported");
+ return -rte_errno;
+ }
+ if (mask->inner_type == supp_mask.inner_type) {
+ efx_spec->efs_match_flags |= EFX_FILTER_MATCH_ETHER_TYPE;
+ efx_spec->efs_ether_type = rte_bswap16(spec->inner_type);
+ } else if (mask->inner_type) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM, item,
+ "Bad mask for VLAN inner_type");
+ return -rte_errno;
+ }
+
return 0;
}
}
}
- if (!(efx_spec->efs_match_flags & EFX_FILTER_MATCH_ETHER_TYPE)) {
- rte_flow_error_set(error, EINVAL,
- RTE_FLOW_ERROR_TYPE_ITEM, item,
- "Outer frame EtherType in pattern with tunneling "
- "must be set");
- return -rte_errno;
- } else if (efx_spec->efs_ether_type != EFX_ETHER_TYPE_IPV4 &&
- efx_spec->efs_ether_type != EFX_ETHER_TYPE_IPV6) {
+ if (efx_spec->efs_match_flags & EFX_FILTER_MATCH_ETHER_TYPE &&
+ efx_spec->efs_ether_type != EFX_ETHER_TYPE_IPV4 &&
+ efx_spec->efs_ether_type != EFX_ETHER_TYPE_IPV6) {
rte_flow_error_set(error, EINVAL,
RTE_FLOW_ERROR_TYPE_ITEM, item,
"Outer frame EtherType in pattern with tunneling "
return -rte_errno;
}
- flow->spec.efs_flags |= EFX_FILTER_FLAG_RX;
- flow->spec.efs_rss_context = EFX_RSS_CONTEXT_DEFAULT;
+ flow->spec.template.efs_flags |= EFX_FILTER_FLAG_RX;
+ flow->spec.template.efs_rss_context = EFX_RSS_CONTEXT_DEFAULT;
return 0;
}
}
/*
- * Allow only VOID pattern item in the inner frame.
+ * Allow only VOID and ETH pattern items in the inner frame.
* Also check that there is only one tunneling protocol.
*/
switch (item->type) {
case RTE_FLOW_ITEM_TYPE_VOID:
+ case RTE_FLOW_ITEM_TYPE_ETH:
break;
case RTE_FLOW_ITEM_TYPE_VXLAN:
break;
}
- rc = item->parse(pattern, &flow->spec, error);
+ rc = item->parse(pattern, &flow->spec.template, error);
if (rc != 0)
return rc;
return -EINVAL;
rxq = sa->rxq_info[queue->index].rxq;
- flow->spec.efs_dmaq_id = (uint16_t)rxq->hw_index;
+ flow->spec.template.efs_dmaq_id = (uint16_t)rxq->hw_index;
return 0;
}
struct sfc_rxq *rxq;
unsigned int rxq_hw_index_min;
unsigned int rxq_hw_index_max;
- const struct rte_eth_rss_conf *rss_conf = rss->rss_conf;
- uint64_t rss_hf;
- uint8_t *rss_key = NULL;
+ const uint8_t *rss_key;
struct sfc_flow_rss *sfc_rss_conf = &flow->rss_conf;
unsigned int i;
- if (rss->num == 0)
+ if (rss->queue_num == 0)
return -EINVAL;
rxq_sw_index = sa->rxq_count - 1;
rxq_hw_index_min = rxq->hw_index;
rxq_hw_index_max = 0;
- for (i = 0; i < rss->num; ++i) {
+ for (i = 0; i < rss->queue_num; ++i) {
rxq_sw_index = rss->queue[i];
if (rxq_sw_index >= sa->rxq_count)
rxq_hw_index_max = rxq->hw_index;
}
- rss_hf = (rss_conf != NULL) ? rss_conf->rss_hf : SFC_RSS_OFFLOADS;
- if ((rss_hf & ~SFC_RSS_OFFLOADS) != 0)
+ switch (rss->func) {
+ case RTE_ETH_HASH_FUNCTION_DEFAULT:
+ case RTE_ETH_HASH_FUNCTION_TOEPLITZ:
+ break;
+ default:
return -EINVAL;
+ }
- if (rss_conf != NULL) {
- if (rss_conf->rss_key_len != sizeof(sa->rss_key))
+ if (rss->level)
+ return -EINVAL;
+
+ if ((rss->types & ~SFC_RSS_OFFLOADS) != 0)
+ return -EINVAL;
+
+ if (rss->key_len) {
+ if (rss->key_len != sizeof(sa->rss_key))
return -EINVAL;
- rss_key = rss_conf->rss_key;
+ rss_key = rss->key;
} else {
rss_key = sa->rss_key;
}
sfc_rss_conf->rxq_hw_index_min = rxq_hw_index_min;
sfc_rss_conf->rxq_hw_index_max = rxq_hw_index_max;
- sfc_rss_conf->rss_hash_types = sfc_rte_to_efx_hash_type(rss_hf);
+ sfc_rss_conf->rss_hash_types = sfc_rte_to_efx_hash_type(rss->types);
rte_memcpy(sfc_rss_conf->rss_key, rss_key, sizeof(sa->rss_key));
for (i = 0; i < RTE_DIM(sfc_rss_conf->rss_tbl); ++i) {
- unsigned int rxq_sw_index = rss->queue[i % rss->num];
+ unsigned int rxq_sw_index = rss->queue[i % rss->queue_num];
struct sfc_rxq *rxq = sa->rxq_info[rxq_sw_index].rxq;
sfc_rss_conf->rss_tbl[i] = rxq->hw_index - rxq_hw_index_min;
}
#endif /* EFSYS_OPT_RX_SCALE */
+static int
+sfc_flow_spec_flush(struct sfc_adapter *sa, struct sfc_flow_spec *spec,
+ unsigned int filters_count)
+{
+ unsigned int i;
+ int ret = 0;
+
+ for (i = 0; i < filters_count; i++) {
+ int rc;
+
+ rc = efx_filter_remove(sa->nic, &spec->filters[i]);
+ if (ret == 0 && rc != 0) {
+ sfc_err(sa, "failed to remove filter specification "
+ "(rc = %d)", rc);
+ ret = rc;
+ }
+ }
+
+ return ret;
+}
+
+static int
+sfc_flow_spec_insert(struct sfc_adapter *sa, struct sfc_flow_spec *spec)
+{
+ unsigned int i;
+ int rc = 0;
+
+ for (i = 0; i < spec->count; i++) {
+ rc = efx_filter_insert(sa->nic, &spec->filters[i]);
+ if (rc != 0) {
+ sfc_flow_spec_flush(sa, spec, i);
+ break;
+ }
+ }
+
+ return rc;
+}
+
+static int
+sfc_flow_spec_remove(struct sfc_adapter *sa, struct sfc_flow_spec *spec)
+{
+ return sfc_flow_spec_flush(sa, spec, spec->count);
+}
+
static int
sfc_flow_filter_insert(struct sfc_adapter *sa,
struct rte_flow *flow)
{
- efx_filter_spec_t *spec = &flow->spec;
-
#if EFSYS_OPT_RX_SCALE
struct sfc_flow_rss *rss = &flow->rss_conf;
+ uint32_t efs_rss_context = EFX_RSS_CONTEXT_DEFAULT;
+ unsigned int i;
int rc = 0;
if (flow->rss) {
rc = efx_rx_scale_context_alloc(sa->nic,
EFX_RX_SCALE_EXCLUSIVE,
rss_spread,
- &spec->efs_rss_context);
+ &efs_rss_context);
if (rc != 0)
goto fail_scale_context_alloc;
- rc = efx_rx_scale_mode_set(sa->nic, spec->efs_rss_context,
+ rc = efx_rx_scale_mode_set(sa->nic, efs_rss_context,
EFX_RX_HASHALG_TOEPLITZ,
rss->rss_hash_types, B_TRUE);
if (rc != 0)
goto fail_scale_mode_set;
- rc = efx_rx_scale_key_set(sa->nic, spec->efs_rss_context,
+ rc = efx_rx_scale_key_set(sa->nic, efs_rss_context,
rss->rss_key,
sizeof(sa->rss_key));
if (rc != 0)
goto fail_scale_key_set;
- spec->efs_dmaq_id = rss->rxq_hw_index_min;
- spec->efs_flags |= EFX_FILTER_FLAG_RX_RSS;
+ /*
+ * At this point, fully elaborated filter specifications
+ * have been produced from the template. To make sure that
+ * RSS behaviour is consistent between them, set the same
+ * RSS context value everywhere.
+ */
+ for (i = 0; i < flow->spec.count; i++) {
+ efx_filter_spec_t *spec = &flow->spec.filters[i];
+
+ spec->efs_rss_context = efs_rss_context;
+ spec->efs_dmaq_id = rss->rxq_hw_index_min;
+ spec->efs_flags |= EFX_FILTER_FLAG_RX_RSS;
+ }
}
- rc = efx_filter_insert(sa->nic, spec);
+ rc = sfc_flow_spec_insert(sa, &flow->spec);
if (rc != 0)
goto fail_filter_insert;
* the HW knows all the information needed to verify
* the table entries, and the operation will succeed
*/
- rc = efx_rx_scale_tbl_set(sa->nic, spec->efs_rss_context,
+ rc = efx_rx_scale_tbl_set(sa->nic, efs_rss_context,
rss->rss_tbl, RTE_DIM(rss->rss_tbl));
if (rc != 0)
goto fail_scale_tbl_set;
return 0;
fail_scale_tbl_set:
- efx_filter_remove(sa->nic, spec);
+ sfc_flow_spec_remove(sa, &flow->spec);
fail_filter_insert:
fail_scale_key_set:
fail_scale_mode_set:
- if (flow->rss)
- efx_rx_scale_context_free(sa->nic, spec->efs_rss_context);
+ if (efs_rss_context != EFX_RSS_CONTEXT_DEFAULT)
+ efx_rx_scale_context_free(sa->nic, efs_rss_context);
fail_scale_context_alloc:
return rc;
#else /* !EFSYS_OPT_RX_SCALE */
- return efx_filter_insert(sa->nic, spec);
+ return sfc_flow_spec_insert(sa, &flow->spec);
#endif /* EFSYS_OPT_RX_SCALE */
}
sfc_flow_filter_remove(struct sfc_adapter *sa,
struct rte_flow *flow)
{
- efx_filter_spec_t *spec = &flow->spec;
int rc = 0;
- rc = efx_filter_remove(sa->nic, spec);
+ rc = sfc_flow_spec_remove(sa, &flow->spec);
if (rc != 0)
return rc;
#if EFSYS_OPT_RX_SCALE
- if (flow->rss)
+ if (flow->rss) {
+ /*
+ * All specifications for a given flow rule have the same RSS
+ * context, so that RSS context value is taken from the first
+ * filter specification
+ */
+ efx_filter_spec_t *spec = &flow->spec.filters[0];
+
rc = efx_rx_scale_context_free(sa->nic, spec->efs_rss_context);
+ }
#endif /* EFSYS_OPT_RX_SCALE */
return rc;
}
for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
+ /* This one may appear anywhere multiple times. */
+ if (actions->type == RTE_FLOW_ACTION_TYPE_VOID)
+ continue;
+ /* Fate-deciding actions may appear exactly once. */
+ if (is_specified) {
+ rte_flow_error_set
+ (error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION,
+ actions,
+ "Cannot combine several fate-deciding actions,"
+ "choose between QUEUE, RSS or DROP");
+ return -rte_errno;
+ }
switch (actions->type) {
- case RTE_FLOW_ACTION_TYPE_VOID:
- break;
-
case RTE_FLOW_ACTION_TYPE_QUEUE:
rc = sfc_flow_parse_queue(sa, actions->conf, flow);
if (rc != 0) {
break;
#endif /* EFSYS_OPT_RX_SCALE */
+ case RTE_FLOW_ACTION_TYPE_DROP:
+ flow->spec.template.efs_dmaq_id =
+ EFX_FILTER_SPEC_RX_DMAQ_ID_DROP;
+
+ is_specified = B_TRUE;
+ break;
+
default:
rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ACTION, actions,
}
}
+ /* When fate is unknown, drop traffic. */
if (!is_specified) {
+ flow->spec.template.efs_dmaq_id =
+ EFX_FILTER_SPEC_RX_DMAQ_ID_DROP;
+ }
+
+ return 0;
+}
+
+/**
+ * Set the EFX_FILTER_MATCH_UNKNOWN_UCAST_DST
+ * and EFX_FILTER_MATCH_UNKNOWN_MCAST_DST match flags in the same
+ * specifications after copying.
+ *
+ * @param spec[in, out]
+ * SFC flow specification to update.
+ * @param filters_count_for_one_val[in]
+ * How many specifications should have the same match flag, what is the
+ * number of specifications before copying.
+ * @param error[out]
+ * Perform verbose error reporting if not NULL.
+ */
+static int
+sfc_flow_set_unknown_dst_flags(struct sfc_flow_spec *spec,
+ unsigned int filters_count_for_one_val,
+ struct rte_flow_error *error)
+{
+ unsigned int i;
+ static const efx_filter_match_flags_t vals[] = {
+ EFX_FILTER_MATCH_UNKNOWN_UCAST_DST,
+ EFX_FILTER_MATCH_UNKNOWN_MCAST_DST
+ };
+
+ if (filters_count_for_one_val * RTE_DIM(vals) != spec->count) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
+ "Number of specifications is incorrect while copying "
+ "by unknown destination flags");
+ return -rte_errno;
+ }
+
+ for (i = 0; i < spec->count; i++) {
+ /* The check above ensures that divisor can't be zero here */
+ spec->filters[i].efs_match_flags |=
+ vals[i / filters_count_for_one_val];
+ }
+
+ return 0;
+}
+
+/**
+ * Check that the following conditions are met:
+ * - the list of supported filters has a filter
+ * with EFX_FILTER_MATCH_UNKNOWN_MCAST_DST flag instead of
+ * EFX_FILTER_MATCH_UNKNOWN_UCAST_DST, since this filter will also
+ * be inserted.
+ *
+ * @param match[in]
+ * The match flags of filter.
+ * @param spec[in]
+ * Specification to be supplemented.
+ * @param filter[in]
+ * SFC filter with list of supported filters.
+ */
+static boolean_t
+sfc_flow_check_unknown_dst_flags(efx_filter_match_flags_t match,
+ __rte_unused efx_filter_spec_t *spec,
+ struct sfc_filter *filter)
+{
+ unsigned int i;
+ efx_filter_match_flags_t match_mcast_dst;
+
+ match_mcast_dst =
+ (match & ~EFX_FILTER_MATCH_UNKNOWN_UCAST_DST) |
+ EFX_FILTER_MATCH_UNKNOWN_MCAST_DST;
+ for (i = 0; i < filter->supported_match_num; i++) {
+ if (match_mcast_dst == filter->supported_match[i])
+ return B_TRUE;
+ }
+
+ return B_FALSE;
+}
+
+/**
+ * Set the EFX_FILTER_MATCH_ETHER_TYPE match flag and EFX_ETHER_TYPE_IPV4 and
+ * EFX_ETHER_TYPE_IPV6 values of the corresponding field in the same
+ * specifications after copying.
+ *
+ * @param spec[in, out]
+ * SFC flow specification to update.
+ * @param filters_count_for_one_val[in]
+ * How many specifications should have the same EtherType value, what is the
+ * number of specifications before copying.
+ * @param error[out]
+ * Perform verbose error reporting if not NULL.
+ */
+static int
+sfc_flow_set_ethertypes(struct sfc_flow_spec *spec,
+ unsigned int filters_count_for_one_val,
+ struct rte_flow_error *error)
+{
+ unsigned int i;
+ static const uint16_t vals[] = {
+ EFX_ETHER_TYPE_IPV4, EFX_ETHER_TYPE_IPV6
+ };
+
+ if (filters_count_for_one_val * RTE_DIM(vals) != spec->count) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
+ "Number of specifications is incorrect "
+ "while copying by Ethertype");
+ return -rte_errno;
+ }
+
+ for (i = 0; i < spec->count; i++) {
+ spec->filters[i].efs_match_flags |=
+ EFX_FILTER_MATCH_ETHER_TYPE;
+
+ /*
+ * The check above ensures that
+ * filters_count_for_one_val is not 0
+ */
+ spec->filters[i].efs_ether_type =
+ vals[i / filters_count_for_one_val];
+ }
+
+ return 0;
+}
+
+/**
+ * Set the EFX_FILTER_MATCH_IFRM_UNKNOWN_UCAST_DST and
+ * EFX_FILTER_MATCH_IFRM_UNKNOWN_MCAST_DST match flags in the same
+ * specifications after copying.
+ *
+ * @param spec[in, out]
+ * SFC flow specification to update.
+ * @param filters_count_for_one_val[in]
+ * How many specifications should have the same match flag, what is the
+ * number of specifications before copying.
+ * @param error[out]
+ * Perform verbose error reporting if not NULL.
+ */
+static int
+sfc_flow_set_ifrm_unknown_dst_flags(struct sfc_flow_spec *spec,
+ unsigned int filters_count_for_one_val,
+ struct rte_flow_error *error)
+{
+ unsigned int i;
+ static const efx_filter_match_flags_t vals[] = {
+ EFX_FILTER_MATCH_IFRM_UNKNOWN_UCAST_DST,
+ EFX_FILTER_MATCH_IFRM_UNKNOWN_MCAST_DST
+ };
+
+ if (filters_count_for_one_val * RTE_DIM(vals) != spec->count) {
rte_flow_error_set(error, EINVAL,
- RTE_FLOW_ERROR_TYPE_ACTION_NUM, actions,
- "Action is unspecified");
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
+ "Number of specifications is incorrect while copying "
+ "by inner frame unknown destination flags");
+ return -rte_errno;
+ }
+
+ for (i = 0; i < spec->count; i++) {
+ /* The check above ensures that divisor can't be zero here */
+ spec->filters[i].efs_match_flags |=
+ vals[i / filters_count_for_one_val];
+ }
+
+ return 0;
+}
+
+/**
+ * Check that the following conditions are met:
+ * - the specification corresponds to a filter for encapsulated traffic
+ * - the list of supported filters has a filter
+ * with EFX_FILTER_MATCH_IFRM_UNKNOWN_MCAST_DST flag instead of
+ * EFX_FILTER_MATCH_IFRM_UNKNOWN_UCAST_DST, since this filter will also
+ * be inserted.
+ *
+ * @param match[in]
+ * The match flags of filter.
+ * @param spec[in]
+ * Specification to be supplemented.
+ * @param filter[in]
+ * SFC filter with list of supported filters.
+ */
+static boolean_t
+sfc_flow_check_ifrm_unknown_dst_flags(efx_filter_match_flags_t match,
+ efx_filter_spec_t *spec,
+ struct sfc_filter *filter)
+{
+ unsigned int i;
+ efx_tunnel_protocol_t encap_type = spec->efs_encap_type;
+ efx_filter_match_flags_t match_mcast_dst;
+
+ if (encap_type == EFX_TUNNEL_PROTOCOL_NONE)
+ return B_FALSE;
+
+ match_mcast_dst =
+ (match & ~EFX_FILTER_MATCH_IFRM_UNKNOWN_UCAST_DST) |
+ EFX_FILTER_MATCH_IFRM_UNKNOWN_MCAST_DST;
+ for (i = 0; i < filter->supported_match_num; i++) {
+ if (match_mcast_dst == filter->supported_match[i])
+ return B_TRUE;
+ }
+
+ return B_FALSE;
+}
+
+/*
+ * Match flags that can be automatically added to filters.
+ * Selecting the last minimum when searching for the copy flag ensures that the
+ * EFX_FILTER_MATCH_UNKNOWN_UCAST_DST flag has a higher priority than
+ * EFX_FILTER_MATCH_ETHER_TYPE. This is because the filter
+ * EFX_FILTER_MATCH_UNKNOWN_UCAST_DST is at the end of the list of supported
+ * filters.
+ */
+static const struct sfc_flow_copy_flag sfc_flow_copy_flags[] = {
+ {
+ .flag = EFX_FILTER_MATCH_UNKNOWN_UCAST_DST,
+ .vals_count = 2,
+ .set_vals = sfc_flow_set_unknown_dst_flags,
+ .spec_check = sfc_flow_check_unknown_dst_flags,
+ },
+ {
+ .flag = EFX_FILTER_MATCH_ETHER_TYPE,
+ .vals_count = 2,
+ .set_vals = sfc_flow_set_ethertypes,
+ .spec_check = NULL,
+ },
+ {
+ .flag = EFX_FILTER_MATCH_IFRM_UNKNOWN_UCAST_DST,
+ .vals_count = 2,
+ .set_vals = sfc_flow_set_ifrm_unknown_dst_flags,
+ .spec_check = sfc_flow_check_ifrm_unknown_dst_flags,
+ },
+};
+
+/* Get item from array sfc_flow_copy_flags */
+static const struct sfc_flow_copy_flag *
+sfc_flow_get_copy_flag(efx_filter_match_flags_t flag)
+{
+ unsigned int i;
+
+ for (i = 0; i < RTE_DIM(sfc_flow_copy_flags); i++) {
+ if (sfc_flow_copy_flags[i].flag == flag)
+ return &sfc_flow_copy_flags[i];
+ }
+
+ return NULL;
+}
+
+/**
+ * Make copies of the specifications, set match flag and values
+ * of the field that corresponds to it.
+ *
+ * @param spec[in, out]
+ * SFC flow specification to update.
+ * @param flag[in]
+ * The match flag to add.
+ * @param error[out]
+ * Perform verbose error reporting if not NULL.
+ */
+static int
+sfc_flow_spec_add_match_flag(struct sfc_flow_spec *spec,
+ efx_filter_match_flags_t flag,
+ struct rte_flow_error *error)
+{
+ unsigned int i;
+ unsigned int new_filters_count;
+ unsigned int filters_count_for_one_val;
+ const struct sfc_flow_copy_flag *copy_flag;
+ int rc;
+
+ copy_flag = sfc_flow_get_copy_flag(flag);
+ if (copy_flag == NULL) {
+ rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
+ "Unsupported spec field for copying");
+ return -rte_errno;
+ }
+
+ new_filters_count = spec->count * copy_flag->vals_count;
+ if (new_filters_count > SF_FLOW_SPEC_NB_FILTERS_MAX) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
+ "Too much EFX specifications in the flow rule");
+ return -rte_errno;
+ }
+
+ /* Copy filters specifications */
+ for (i = spec->count; i < new_filters_count; i++)
+ spec->filters[i] = spec->filters[i - spec->count];
+
+ filters_count_for_one_val = spec->count;
+ spec->count = new_filters_count;
+
+ rc = copy_flag->set_vals(spec, filters_count_for_one_val, error);
+ if (rc != 0)
+ return rc;
+
+ return 0;
+}
+
+/**
+ * Check that the given set of match flags missing in the original filter spec
+ * could be covered by adding spec copies which specify the corresponding
+ * flags and packet field values to match.
+ *
+ * @param miss_flags[in]
+ * Flags that are missing until the supported filter.
+ * @param spec[in]
+ * Specification to be supplemented.
+ * @param filter[in]
+ * SFC filter.
+ *
+ * @return
+ * Number of specifications after copy or 0, if the flags can not be added.
+ */
+static unsigned int
+sfc_flow_check_missing_flags(efx_filter_match_flags_t miss_flags,
+ efx_filter_spec_t *spec,
+ struct sfc_filter *filter)
+{
+ unsigned int i;
+ efx_filter_match_flags_t copy_flags = 0;
+ efx_filter_match_flags_t flag;
+ efx_filter_match_flags_t match = spec->efs_match_flags | miss_flags;
+ sfc_flow_spec_check *check;
+ unsigned int multiplier = 1;
+
+ for (i = 0; i < RTE_DIM(sfc_flow_copy_flags); i++) {
+ flag = sfc_flow_copy_flags[i].flag;
+ check = sfc_flow_copy_flags[i].spec_check;
+ if ((flag & miss_flags) == flag) {
+ if (check != NULL && (!check(match, spec, filter)))
+ continue;
+
+ copy_flags |= flag;
+ multiplier *= sfc_flow_copy_flags[i].vals_count;
+ }
+ }
+
+ if (copy_flags == miss_flags)
+ return multiplier;
+
+ return 0;
+}
+
+/**
+ * Attempt to supplement the specification template to the minimally
+ * supported set of match flags. To do this, it is necessary to copy
+ * the specifications, filling them with the values of fields that
+ * correspond to the missing flags.
+ * The necessary and sufficient filter is built from the fewest number
+ * of copies which could be made to cover the minimally required set
+ * of flags.
+ *
+ * @param sa[in]
+ * SFC adapter.
+ * @param spec[in, out]
+ * SFC flow specification to update.
+ * @param error[out]
+ * Perform verbose error reporting if not NULL.
+ */
+static int
+sfc_flow_spec_filters_complete(struct sfc_adapter *sa,
+ struct sfc_flow_spec *spec,
+ struct rte_flow_error *error)
+{
+ struct sfc_filter *filter = &sa->filter;
+ efx_filter_match_flags_t miss_flags;
+ efx_filter_match_flags_t min_miss_flags = 0;
+ efx_filter_match_flags_t match;
+ unsigned int min_multiplier = UINT_MAX;
+ unsigned int multiplier;
+ unsigned int i;
+ int rc;
+
+ match = spec->template.efs_match_flags;
+ for (i = 0; i < filter->supported_match_num; i++) {
+ if ((match & filter->supported_match[i]) == match) {
+ miss_flags = filter->supported_match[i] & (~match);
+ multiplier = sfc_flow_check_missing_flags(miss_flags,
+ &spec->template, filter);
+ if (multiplier > 0) {
+ if (multiplier <= min_multiplier) {
+ min_multiplier = multiplier;
+ min_miss_flags = miss_flags;
+ }
+ }
+ }
+ }
+
+ if (min_multiplier == UINT_MAX) {
+ rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
+ "Flow rule pattern is not supported");
+ return -rte_errno;
+ }
+
+ for (i = 0; i < RTE_DIM(sfc_flow_copy_flags); i++) {
+ efx_filter_match_flags_t flag = sfc_flow_copy_flags[i].flag;
+
+ if ((flag & min_miss_flags) == flag) {
+ rc = sfc_flow_spec_add_match_flag(spec, flag, error);
+ if (rc != 0)
+ return rc;
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * Check that set of match flags is referred to by a filter. Filter is
+ * described by match flags with the ability to add OUTER_VID and INNER_VID
+ * flags.
+ *
+ * @param match_flags[in]
+ * Set of match flags.
+ * @param flags_pattern[in]
+ * Pattern of filter match flags.
+ */
+static boolean_t
+sfc_flow_is_match_with_vids(efx_filter_match_flags_t match_flags,
+ efx_filter_match_flags_t flags_pattern)
+{
+ if ((match_flags & flags_pattern) != flags_pattern)
+ return B_FALSE;
+
+ switch (match_flags & ~flags_pattern) {
+ case 0:
+ case EFX_FILTER_MATCH_OUTER_VID:
+ case EFX_FILTER_MATCH_OUTER_VID | EFX_FILTER_MATCH_INNER_VID:
+ return B_TRUE;
+ default:
+ return B_FALSE;
+ }
+}
+
+/**
+ * Check whether the spec maps to a hardware filter which is known to be
+ * ineffective despite being valid.
+ *
+ * @param spec[in]
+ * SFC flow specification.
+ */
+static boolean_t
+sfc_flow_is_match_flags_exception(struct sfc_flow_spec *spec)
+{
+ unsigned int i;
+ uint16_t ether_type;
+ uint8_t ip_proto;
+ efx_filter_match_flags_t match_flags;
+
+ for (i = 0; i < spec->count; i++) {
+ match_flags = spec->filters[i].efs_match_flags;
+
+ if (sfc_flow_is_match_with_vids(match_flags,
+ EFX_FILTER_MATCH_ETHER_TYPE) ||
+ sfc_flow_is_match_with_vids(match_flags,
+ EFX_FILTER_MATCH_ETHER_TYPE |
+ EFX_FILTER_MATCH_LOC_MAC)) {
+ ether_type = spec->filters[i].efs_ether_type;
+ if (ether_type == EFX_ETHER_TYPE_IPV4 ||
+ ether_type == EFX_ETHER_TYPE_IPV6)
+ return B_TRUE;
+ } else if (sfc_flow_is_match_with_vids(match_flags,
+ EFX_FILTER_MATCH_ETHER_TYPE |
+ EFX_FILTER_MATCH_IP_PROTO) ||
+ sfc_flow_is_match_with_vids(match_flags,
+ EFX_FILTER_MATCH_ETHER_TYPE |
+ EFX_FILTER_MATCH_IP_PROTO |
+ EFX_FILTER_MATCH_LOC_MAC)) {
+ ip_proto = spec->filters[i].efs_ip_proto;
+ if (ip_proto == EFX_IPPROTO_TCP ||
+ ip_proto == EFX_IPPROTO_UDP)
+ return B_TRUE;
+ }
+ }
+
+ return B_FALSE;
+}
+
+static int
+sfc_flow_validate_match_flags(struct sfc_adapter *sa,
+ struct rte_flow *flow,
+ struct rte_flow_error *error)
+{
+ efx_filter_spec_t *spec_tmpl = &flow->spec.template;
+ efx_filter_match_flags_t match_flags = spec_tmpl->efs_match_flags;
+ int rc;
+
+ /* Initialize the first filter spec with template */
+ flow->spec.filters[0] = *spec_tmpl;
+ flow->spec.count = 1;
+
+ if (!sfc_filter_is_match_supported(sa, match_flags)) {
+ rc = sfc_flow_spec_filters_complete(sa, &flow->spec, error);
+ if (rc != 0)
+ return rc;
+ }
+
+ if (sfc_flow_is_match_flags_exception(&flow->spec)) {
+ rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
+ "The flow rule pattern is unsupported");
return -rte_errno;
}
if (rc != 0)
goto fail_bad_value;
- if (!sfc_filter_is_match_supported(sa, flow->spec.efs_match_flags)) {
- rte_flow_error_set(error, ENOTSUP,
- RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
- "Flow rule pattern is not supported");
- return -rte_errno;
- }
+ rc = sfc_flow_validate_match_flags(sa, flow, error);
+ if (rc != 0)
+ goto fail_bad_value;
+
+ return 0;
fail_bad_value:
return rc;
git.droids-corp.org / dpdk.git / blobdiff