[dpdk-dev] [PATCH 04/40] bnxt: add dev infos get operation
Stephen Hurd
stephen.hurd at broadcom.com
Fri May 6 21:25:44 CEST 2016
Gets device info from the bp structure filled in the init() function.
Signed-off-by: Stephen Hurd <stephen.hurd at broadcom.com>
Reviewed-by: Ajit Kumar Khaparde <ajit.khaparde at broadcom.com>
---
drivers/net/bnxt/bnxt.h | 3 ++
drivers/net/bnxt/bnxt_ethdev.c | 96 +++++++++++++++++++++++++++++++++++++++++-
2 files changed, 98 insertions(+), 1 deletion(-)
diff --git a/drivers/net/bnxt/bnxt.h b/drivers/net/bnxt/bnxt.h
index ebddeab..9ba2433 100644
--- a/drivers/net/bnxt/bnxt.h
+++ b/drivers/net/bnxt/bnxt.h
@@ -42,6 +42,9 @@
#include <rte_lcore.h>
#include <rte_spinlock.h>
+#define BNXT_MAX_MTU 9000
+#define VLAN_TAG_SIZE 4
+
struct bnxt_vf_info {
uint16_t fw_fid;
uint8_t mac_addr[ETHER_ADDR_LEN];
diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 07519df..d55b9e9 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -53,11 +53,105 @@ static struct rte_pci_id bnxt_pci_id_map[] = {
};
/*
+ * Device configuration and status function
+ */
+
+static void bnxt_dev_info_get_op(struct rte_eth_dev *eth_dev,
+ struct rte_eth_dev_info *dev_info)
+{
+ struct bnxt *bp = (struct bnxt *)eth_dev->data->dev_private;
+ uint16_t max_vnics, i, j, vpool, vrxq;
+
+ /* MAC Specifics */
+ dev_info->max_mac_addrs = MAX_NUM_MAC_ADDR;
+ dev_info->max_hash_mac_addrs = 0;
+
+ /* PF/VF specifics */
+ if (BNXT_PF(bp)) {
+ dev_info->max_rx_queues = bp->pf.max_rx_rings;
+ dev_info->max_tx_queues = bp->pf.max_tx_rings;
+ dev_info->max_vfs = bp->pf.active_vfs;
+ dev_info->reta_size = bp->pf.max_rsscos_ctx;
+ max_vnics = bp->pf.max_vnics;
+ } else {
+ dev_info->max_rx_queues = bp->vf.max_rx_rings;
+ dev_info->max_tx_queues = bp->vf.max_tx_rings;
+ dev_info->reta_size = bp->vf.max_rsscos_ctx;
+ max_vnics = bp->vf.max_vnics;
+ }
+
+ /* Fast path specifics */
+ dev_info->min_rx_bufsize = 1;
+ dev_info->max_rx_pktlen = BNXT_MAX_MTU + ETHER_HDR_LEN + ETHER_CRC_LEN
+ + VLAN_TAG_SIZE;
+ dev_info->rx_offload_capa = 0;
+ dev_info->tx_offload_capa = DEV_TX_OFFLOAD_IPV4_CKSUM |
+ DEV_TX_OFFLOAD_TCP_CKSUM |
+ DEV_TX_OFFLOAD_UDP_CKSUM |
+ DEV_TX_OFFLOAD_TCP_TSO;
+
+ /* *INDENT-OFF* */
+ dev_info->default_rxconf = (struct rte_eth_rxconf) {
+ .rx_thresh = {
+ .pthresh = 8,
+ .hthresh = 8,
+ .wthresh = 0,
+ },
+ .rx_free_thresh = 32,
+ .rx_drop_en = 0,
+ };
+
+ dev_info->default_txconf = (struct rte_eth_txconf) {
+ .tx_thresh = {
+ .pthresh = 32,
+ .hthresh = 0,
+ .wthresh = 0,
+ },
+ .tx_free_thresh = 32,
+ .tx_rs_thresh = 32,
+ .txq_flags = ETH_TXQ_FLAGS_NOMULTSEGS |
+ ETH_TXQ_FLAGS_NOOFFLOADS,
+ };
+ /* *INDENT-ON* */
+
+ /*
+ * TODO: default_rxconf, default_txconf, rx_desc_lim, and tx_desc_lim
+ * need further investigation.
+ */
+
+ /* VMDq resources */
+ vpool = 64; /* ETH_64_POOLS */
+ vrxq = 128; /* ETH_VMDQ_DCB_NUM_QUEUES */
+ for (i = 0; i < 4; vpool >>= 1, i++) {
+ if (max_vnics > vpool) {
+ for (j = 0; j < 5; vrxq >>= 1, j++) {
+ if (dev_info->max_rx_queues > vrxq) {
+ if (vpool > vrxq)
+ vpool = vrxq;
+ goto found;
+ }
+ }
+ /* Not enough resources to support VMDq */
+ break;
+ }
+ }
+ /* Not enough resources to support VMDq */
+ vpool = 0;
+ vrxq = 0;
+found:
+ dev_info->max_vmdq_pools = vpool;
+ dev_info->vmdq_queue_num = vrxq;
+
+ dev_info->vmdq_pool_base = 0;
+ dev_info->vmdq_queue_base = 0;
+}
+
+/*
* Initialization
*/
static struct eth_dev_ops bnxt_dev_ops = {
-0
+ .dev_infos_get = bnxt_dev_info_get_op,
};
static bool bnxt_vf_pciid(uint16_t id)
--
1.9.1
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