nfp: tls: count TSO segments separately for the TLS offload

Count the number of successfully submitted TLS segments,
not skbs. This will make it easier to compare the TLS
encryption count against other counters.
Signed-off-by: NJakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: NDirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/netronome/nfp/nfp_net_common.c

@@ -880,7 +880,10 @@ nfp_net_tls_tx(struct nfp_net_dp *dp, struct nfp_net_r_vector *r_vec,
 
 	if (datalen) {
 		u64_stats_update_begin(&r_vec->tx_sync);
-		r_vec->hw_tls_tx++;
+		if (!skb_is_gso(skb))
+			r_vec->hw_tls_tx++;
+		else
+			r_vec->hw_tls_tx += skb_shinfo(skb)->gso_segs;
 		u64_stats_update_end(&r_vec->tx_sync);
 	}