#include "otx2_ethdev.h"
#include "otx2_flow.h"
+static int
+flow_mcam_alloc_counter(struct otx2_mbox *mbox, uint16_t *ctr)
+{
+ struct npc_mcam_alloc_counter_req *req;
+ struct npc_mcam_alloc_counter_rsp *rsp;
+ int rc;
+
+ req = otx2_mbox_alloc_msg_npc_mcam_alloc_counter(mbox);
+ req->count = 1;
+ otx2_mbox_msg_send(mbox, 0);
+ rc = otx2_mbox_get_rsp(mbox, 0, (void *)&rsp);
+
+ *ctr = rsp->cntr_list[0];
+ return rc;
+}
+
int
otx2_flow_mcam_free_counter(struct otx2_mbox *mbox, uint16_t ctr_id)
{
* since NPC_MCAM_LOWER_PRIO & NPC_MCAM_HIGHER_PRIO don't ensure zone accuracy.
* If not properly aligned, shift entries to do so
*/
-int
+static int
flow_validate_and_shift_prio_ent(struct otx2_mbox *mbox, struct rte_flow *flow,
struct otx2_npc_flow_info *flow_info,
struct npc_mcam_alloc_entry_rsp *rsp,
return rc;
}
+
+static int
+flow_find_ref_entry(struct otx2_npc_flow_info *flow_info, int *prio,
+ int prio_lvl)
+{
+ struct otx2_mcam_ents_info *info = flow_info->flow_entry_info;
+ int step = 1;
+
+ while (step < flow_info->flow_max_priority) {
+ if (((prio_lvl + step) < flow_info->flow_max_priority) &&
+ info[prio_lvl + step].live_ent) {
+ *prio = NPC_MCAM_HIGHER_PRIO;
+ return info[prio_lvl + step].min_id;
+ }
+
+ if (((prio_lvl - step) >= 0) &&
+ info[prio_lvl - step].live_ent) {
+ otx2_npc_dbg("Prio_lvl %u live %u", prio_lvl - step,
+ info[prio_lvl - step].live_ent);
+ *prio = NPC_MCAM_LOWER_PRIO;
+ return info[prio_lvl - step].max_id;
+ }
+ step++;
+ }
+ *prio = NPC_MCAM_ANY_PRIO;
+ return 0;
+}
+
+static int
+flow_fill_entry_cache(struct otx2_mbox *mbox, struct rte_flow *flow,
+ struct otx2_npc_flow_info *flow_info, uint32_t *free_ent)
+{
+ struct rte_bitmap *free_bmp, *free_bmp_rev, *live_bmp, *live_bmp_rev;
+ struct npc_mcam_alloc_entry_rsp rsp_local;
+ struct npc_mcam_alloc_entry_rsp *rsp_cmd;
+ struct npc_mcam_alloc_entry_req *req;
+ struct npc_mcam_alloc_entry_rsp *rsp;
+ struct otx2_mcam_ents_info *info;
+ uint16_t ref_ent, idx;
+ int rc, prio;
+
+ info = &flow_info->flow_entry_info[flow->priority];
+ free_bmp = flow_info->free_entries[flow->priority];
+ free_bmp_rev = flow_info->free_entries_rev[flow->priority];
+ live_bmp = flow_info->live_entries[flow->priority];
+ live_bmp_rev = flow_info->live_entries_rev[flow->priority];
+
+ ref_ent = flow_find_ref_entry(flow_info, &prio, flow->priority);
+
+ req = otx2_mbox_alloc_msg_npc_mcam_alloc_entry(mbox);
+ req->contig = 1;
+ req->count = flow_info->flow_prealloc_size;
+ req->priority = prio;
+ req->ref_entry = ref_ent;
+
+ otx2_npc_dbg("Fill cache ref entry %u prio %u", ref_ent, prio);
+
+ otx2_mbox_msg_send(mbox, 0);
+ rc = otx2_mbox_get_rsp(mbox, 0, (void *)&rsp_cmd);
+ if (rc)
+ return rc;
+
+ rsp = &rsp_local;
+ memcpy(rsp, rsp_cmd, sizeof(*rsp));
+
+ otx2_npc_dbg("Alloc entry %u count %u , prio = %d", rsp->entry,
+ rsp->count, prio);
+
+ /* Non-first ent cache fill */
+ if (prio != NPC_MCAM_ANY_PRIO) {
+ flow_validate_and_shift_prio_ent(mbox, flow, flow_info, rsp,
+ prio);
+ } else {
+ /* Copy into response entry list */
+ for (idx = 0; idx < rsp->count; idx++)
+ rsp->entry_list[idx] = rsp->entry + idx;
+ }
+
+ otx2_npc_dbg("Fill entry cache rsp count %u", rsp->count);
+ /* Update free entries, reverse free entries list,
+ * min & max entry ids.
+ */
+ for (idx = 0; idx < rsp->count; idx++) {
+ if (unlikely(rsp->entry_list[idx] < info->min_id))
+ info->min_id = rsp->entry_list[idx];
+
+ if (unlikely(rsp->entry_list[idx] > info->max_id))
+ info->max_id = rsp->entry_list[idx];
+
+ /* Skip entry to be returned, not to be part of free
+ * list.
+ */
+ if (prio == NPC_MCAM_HIGHER_PRIO) {
+ if (unlikely(idx == (rsp->count - 1))) {
+ *free_ent = rsp->entry_list[idx];
+ continue;
+ }
+ } else {
+ if (unlikely(!idx)) {
+ *free_ent = rsp->entry_list[idx];
+ continue;
+ }
+ }
+ info->free_ent++;
+ rte_bitmap_set(free_bmp, rsp->entry_list[idx]);
+ rte_bitmap_set(free_bmp_rev, flow_info->mcam_entries -
+ rsp->entry_list[idx] - 1);
+
+ otx2_npc_dbg("Final rsp entry %u rsp entry rev %u",
+ rsp->entry_list[idx],
+ flow_info->mcam_entries - rsp->entry_list[idx] - 1);
+ }
+
+ otx2_npc_dbg("Cache free entry %u, rev = %u", *free_ent,
+ flow_info->mcam_entries - *free_ent - 1);
+ info->live_ent++;
+ rte_bitmap_set(live_bmp, *free_ent);
+ rte_bitmap_set(live_bmp_rev, flow_info->mcam_entries - *free_ent - 1);
+
+ return 0;
+}
+
+static int
+flow_check_preallocated_entry_cache(struct otx2_mbox *mbox,
+ struct rte_flow *flow,
+ struct otx2_npc_flow_info *flow_info)
+{
+ struct rte_bitmap *free, *free_rev, *live, *live_rev;
+ uint32_t pos = 0, free_ent = 0, mcam_entries;
+ struct otx2_mcam_ents_info *info;
+ uint64_t slab = 0;
+ int rc;
+
+ otx2_npc_dbg("Flow priority %u", flow->priority);
+
+ info = &flow_info->flow_entry_info[flow->priority];
+
+ free_rev = flow_info->free_entries_rev[flow->priority];
+ free = flow_info->free_entries[flow->priority];
+ live_rev = flow_info->live_entries_rev[flow->priority];
+ live = flow_info->live_entries[flow->priority];
+ mcam_entries = flow_info->mcam_entries;
+
+ if (info->free_ent) {
+ rc = rte_bitmap_scan(free, &pos, &slab);
+ if (rc) {
+ /* Get free_ent from free entry bitmap */
+ free_ent = pos + __builtin_ctzll(slab);
+ otx2_npc_dbg("Allocated from cache entry %u", free_ent);
+ /* Remove from free bitmaps and add to live ones */
+ rte_bitmap_clear(free, free_ent);
+ rte_bitmap_set(live, free_ent);
+ rte_bitmap_clear(free_rev,
+ mcam_entries - free_ent - 1);
+ rte_bitmap_set(live_rev,
+ mcam_entries - free_ent - 1);
+
+ info->free_ent--;
+ info->live_ent++;
+ return free_ent;
+ }
+
+ otx2_npc_dbg("No free entry:its a mess");
+ return -1;
+ }
+
+ rc = flow_fill_entry_cache(mbox, flow, flow_info, &free_ent);
+ if (rc)
+ return rc;
+
+ return free_ent;
+}
+
+int
+otx2_flow_mcam_alloc_and_write(struct rte_flow *flow, struct otx2_mbox *mbox,
+ __rte_unused struct otx2_parse_state *pst,
+ struct otx2_npc_flow_info *flow_info)
+{
+ int use_ctr = (flow->ctr_id == NPC_COUNTER_NONE ? 0 : 1);
+ struct npc_mcam_write_entry_req *req;
+ struct mbox_msghdr *rsp;
+ uint16_t ctr = ~(0);
+ int rc, idx;
+ int entry;
+
+ if (use_ctr) {
+ rc = flow_mcam_alloc_counter(mbox, &ctr);
+ if (rc)
+ return rc;
+ }
+
+ entry = flow_check_preallocated_entry_cache(mbox, flow, flow_info);
+ if (entry < 0) {
+ otx2_err("Prealloc failed");
+ otx2_flow_mcam_free_counter(mbox, ctr);
+ return NPC_MCAM_ALLOC_FAILED;
+ }
+ req = otx2_mbox_alloc_msg_npc_mcam_write_entry(mbox);
+ req->set_cntr = use_ctr;
+ req->cntr = ctr;
+ req->entry = entry;
+ otx2_npc_dbg("Alloc & write entry %u", entry);
+
+ req->intf =
+ (flow->nix_intf == OTX2_INTF_RX) ? NPC_MCAM_RX : NPC_MCAM_TX;
+ req->enable_entry = 1;
+ req->entry_data.action = flow->npc_action;
+
+ /*
+ * DPDK sets vtag action on per interface basis, not
+ * per flow basis. It is a matter of how we decide to support
+ * this pmd specific behavior. There are two ways:
+ * 1. Inherit the vtag action from the one configured
+ * for this interface. This can be read from the
+ * vtag_action configured for default mcam entry of
+ * this pf_func.
+ * 2. Do not support vtag action with rte_flow.
+ *
+ * Second approach is used now.
+ */
+ req->entry_data.vtag_action = 0ULL;
+
+ for (idx = 0; idx < OTX2_MAX_MCAM_WIDTH_DWORDS; idx++) {
+ req->entry_data.kw[idx] = flow->mcam_data[idx];
+ req->entry_data.kw_mask[idx] = flow->mcam_mask[idx];
+ }
+
+ if (flow->nix_intf == OTX2_INTF_RX) {
+ req->entry_data.kw[0] |= flow_info->channel;
+ req->entry_data.kw_mask[0] |= (BIT_ULL(12) - 1);
+ } else {
+ uint16_t pf_func = (flow->npc_action >> 4) & 0xffff;
+
+ pf_func = htons(pf_func);
+ req->entry_data.kw[0] |= ((uint64_t)pf_func << 32);
+ req->entry_data.kw_mask[0] |= ((uint64_t)0xffff << 32);
+ }
+
+ otx2_mbox_msg_send(mbox, 0);
+ rc = otx2_mbox_get_rsp(mbox, 0, (void *)&rsp);
+ if (rc != 0)
+ return rc;
+
+ flow->mcam_id = entry;
+ if (use_ctr)
+ flow->ctr_id = ctr;
+ return 0;
+}
git.droids-corp.org / dpdk.git / commitdiff