net: mana: Set tx_packets to post gso processing packet count

JIRA: https://issues.redhat.com/browse/RHEL-109583

commit 7399ef9
Author: Shradha Gupta <shradhagupta@linux.microsoft.com>
Date:   Tue Jun 17 04:33:41 2025 -0700

    net: mana: Set tx_packets to post gso processing packet count

    Allow tx_packets and tx_bytes counter in the driver to represent
    the packets transmitted post GSO processing.

    Currently they are populated as bigger pre-GSO packets and bytes

    Signed-off-by: Shradha Gupta <shradhagupta@linux.microsoft.com>
    Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>

Author: Maxim Levitsky

drivers/net/ethernet/microsoft/mana/mana_en.c

@@ -250,10 +250,10 @@ netdev_tx_t mana_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 	struct netdev_queue *net_txq;
 	struct mana_stats_tx *tx_stats;
 	struct gdma_queue *gdma_sq;
+	int err, len, num_gso_seg;
 	unsigned int csum_type;
 	struct mana_txq *txq;
 	struct mana_cq *cq;
-	int err, len;
 
 	if (unlikely(!apc->port_is_up))
 		goto tx_drop;
@@ -406,6 +406,7 @@ netdev_tx_t mana_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 	skb_queue_tail(&txq->pending_skbs, skb);
 
 	len = skb->len;
+	num_gso_seg = skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
 	net_txq = netdev_get_tx_queue(ndev, txq_idx);
 
 	err = mana_gd_post_work_request(gdma_sq, &pkg.wqe_req,
@@ -430,10 +431,13 @@ netdev_tx_t mana_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 	/* skb may be freed after mana_gd_post_work_request. Do not use it. */
 	skb = NULL;
 
+	/* Populated the packet and bytes counters based on post GSO packet
+	 * calculations
+	 */
 	tx_stats = &txq->stats;
 	u64_stats_update_begin(&tx_stats->syncp);
-	tx_stats->packets++;
-	tx_stats->bytes += len;
+	tx_stats->packets += num_gso_seg;
+	tx_stats->bytes += len + ((num_gso_seg - 1) * gso_hs);
 	u64_stats_update_end(&tx_stats->syncp);
 
 tx_busy: