net/bnxt: support Thor WC TCAM

[dpdk.git] / drivers / net / netvsc / hn_nvs.c

diff --git a/drivers/net/netvsc/hn_nvs.c b/drivers/net/netvsc/hn_nvs.c
index 6b51868..89dbba6 100644 (file)
--- a/drivers/net/netvsc/hn_nvs.c
+++ b/drivers/net/netvsc/hn_nvs.c
@@ -54,7 +54,7 @@ static int hn_nvs_req_send(struct hn_data *hv,
 }
 
 static int
-hn_nvs_execute(struct hn_data *hv,
+__hn_nvs_execute(struct hn_data *hv,
               void *req, uint32_t reqlen,
               void *resp, uint32_t resplen,
               uint32_t type)
@@ -62,6 +62,7 @@ hn_nvs_execute(struct hn_data *hv,
        struct vmbus_channel *chan = hn_primary_chan(hv);
        char buffer[NVS_RESPSIZE_MAX];
        const struct hn_nvs_hdr *hdr;
+       uint64_t xactid;
        uint32_t len;
        int ret;
 
@@ -77,7 +78,7 @@ hn_nvs_execute(struct hn_data *hv,
 
  retry:
        len = sizeof(buffer);
-       ret = rte_vmbus_chan_recv(chan, buffer, &len, NULL);
+       ret = rte_vmbus_chan_recv(chan, buffer, &len, &xactid);
        if (ret == -EAGAIN) {
                rte_delay_us(HN_CHAN_INTERVAL_US);
                goto retry;
@@ -88,7 +89,24 @@ hn_nvs_execute(struct hn_data *hv,
                return ret;
        }
 
+       if (len < sizeof(*hdr)) {
+               PMD_DRV_LOG(ERR, "response missing NVS header");
+               return -EINVAL;
+       }
+
        hdr = (struct hn_nvs_hdr *)buffer;
+
+       /* Silently drop received packets while waiting for response */
+       switch (hdr->type) {
+       case NVS_TYPE_RNDIS:
+               hn_nvs_ack_rxbuf(chan, xactid);
+               /* fallthrough */
+
+       case NVS_TYPE_TXTBL_NOTE:
+               PMD_DRV_LOG(DEBUG, "discard packet type 0x%x", hdr->type);
+               goto retry;
+       }
+
        if (hdr->type != type) {
                PMD_DRV_LOG(ERR, "unexpected NVS resp %#x, expect %#x",
                            hdr->type, type);
@@ -108,6 +126,29 @@ hn_nvs_execute(struct hn_data *hv,
        return 0;
 }
 
+
+/*
+ * Execute one control command and get the response.
+ * Only one command can be active on a channel at once
+ * Unlike BSD, DPDK does not have an interrupt context
+ * so the polling is required to wait for response.
+ */
+static int
+hn_nvs_execute(struct hn_data *hv,
+              void *req, uint32_t reqlen,
+              void *resp, uint32_t resplen,
+              uint32_t type)
+{
+       struct hn_rx_queue *rxq = hv->primary;
+       int ret;
+
+       rte_spinlock_lock(&rxq->ring_lock);
+       ret = __hn_nvs_execute(hv, req, reqlen, resp, resplen, type);
+       rte_spinlock_unlock(&rxq->ring_lock);
+
+       return ret;
+}
+
 static int
 hn_nvs_doinit(struct hn_data *hv, uint32_t nvs_ver)
 {
@@ -187,9 +228,15 @@ hn_nvs_conn_rxbuf(struct hn_data *hv)
                    resp.nvs_sect[0].slotcnt);
        hv->rxbuf_section_cnt = resp.nvs_sect[0].slotcnt;
 
-       hv->rxbuf_info = rte_calloc("HN_RXBUF_INFO", hv->rxbuf_section_cnt,
-                                   sizeof(*hv->rxbuf_info), RTE_CACHE_LINE_SIZE);
-       if (!hv->rxbuf_info) {
+       /*
+        * Pimary queue's rxbuf_info is not allocated at creation time.
+        * Now we can allocate it after we figure out the slotcnt.
+        */
+       hv->primary->rxbuf_info = rte_calloc("HN_RXBUF_INFO",
+                       hv->rxbuf_section_cnt,
+                       sizeof(*hv->primary->rxbuf_info),
+                       RTE_CACHE_LINE_SIZE);
+       if (!hv->primary->rxbuf_info) {
                PMD_DRV_LOG(ERR,
                            "could not allocate rxbuf info");
                return -ENOMEM;
@@ -219,7 +266,6 @@ hn_nvs_disconn_rxbuf(struct hn_data *hv)
                            error);
        }
 
-       rte_free(hv->rxbuf_info);
        /*
         * Linger long enough for NVS to disconnect RXBUF.
         */
@@ -528,7 +574,7 @@ hn_nvs_alloc_subchans(struct hn_data *hv, uint32_t *nsubch)
        return 0;
 }
 
-void
+int
 hn_nvs_set_datapath(struct hn_data *hv, uint32_t path)
 {
        struct hn_nvs_datapath dp;
@@ -547,4 +593,6 @@ hn_nvs_set_datapath(struct hn_data *hv, uint32_t path)
                            "send set datapath failed: %d",
                            error);
        }
+
+       return error;
 }