net/ice: fix Tx preparation

[ upstream commit 2f13ba5333b06589ba0e0e307dadcfaa95daf3dc ] 1. Check nb_segs > 8 for NO TSO case 2. Check nb_segs > Tx ring size for TSO case 3. report nb_mtu_seg_max and nb_seg_max in dev_info. Fixes: 17c7d0f ("net/ice: support basic Rx/Tx") Signed-off-by: Qi Zhang <qi.z.zhang@intel.com> Acked-by: Qiming Yang <qiming.yang@intel.com>
bluca · Nov 8, 2023 · 632656a · 632656a
1 parent f2d7828
commit 632656a
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Showing 3 changed files with 20 additions and 2 deletions.
diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c
@@ -3718,6 +3718,8 @@ ice_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 		.nb_max = ICE_MAX_RING_DESC,
 		.nb_min = ICE_MIN_RING_DESC,
 		.nb_align = ICE_ALIGN_RING_DESC,
+		.nb_mtu_seg_max = ICE_TX_MTU_SEG_MAX,
+		.nb_seg_max = ICE_MAX_RING_DESC,
 	};
 
 	dev_info->speed_capa = ETH_LINK_SPEED_10M |

diff --git a/drivers/net/ice/ice_rxtx.c b/drivers/net/ice/ice_rxtx.c
@@ -3227,7 +3227,7 @@ ice_check_empty_mbuf(struct rte_mbuf *tx_pkt)
 }
 
 uint16_t
-ice_prep_pkts(__rte_unused void *tx_queue, struct rte_mbuf **tx_pkts,
+ice_prep_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
 	      uint16_t nb_pkts)
 {
 	int i, ret;
@@ -3238,9 +3238,23 @@ ice_prep_pkts(__rte_unused void *tx_queue, struct rte_mbuf **tx_pkts,
 		m = tx_pkts[i];
 		ol_flags = m->ol_flags;
 
-		if (ol_flags & PKT_TX_TCP_SEG &&
+		if (!(ol_flags & PKT_TX_TCP_SEG) &&
+		    /**
+		     * No TSO case: nb->segs, pkt_len to not exceed
+		     * the limites.
+		     */
+		    (m->nb_segs > ICE_TX_MTU_SEG_MAX ||
+		     m->pkt_len > ICE_FRAME_SIZE_MAX)) {
+			rte_errno = EINVAL;
+			return i;
+		} else if (ol_flags & PKT_TX_TCP_SEG &&
+		    /** TSO case: tso_segsz, nb_segs, pkt_len not exceed
+		     * the limits.
+		     */
 		    (m->tso_segsz < ICE_MIN_TSO_MSS ||
 		     m->tso_segsz > ICE_MAX_TSO_MSS ||
+		     m->nb_segs >
+			((struct ice_tx_queue *)tx_queue)->nb_tx_desc ||
 		     m->pkt_len > ICE_MAX_TSO_FRAME_SIZE)) {
 			/**
 			 * MSS outside the range are considered malicious

diff --git a/drivers/net/ice/ice_rxtx.h b/drivers/net/ice/ice_rxtx.h
@@ -45,6 +45,8 @@
 /* Max data buffer size must be 16K - 128 bytes */
 #define ICE_RX_MAX_DATA_BUF_SIZE	(16 * 1024 - 128)
 
+#define ICE_TX_MTU_SEG_MAX	8
+
 typedef void (*ice_rx_release_mbufs_t)(struct ice_rx_queue *rxq);
 typedef void (*ice_tx_release_mbufs_t)(struct ice_tx_queue *txq);
 typedef void (*ice_rxd_to_pkt_fields_t)(struct ice_rx_queue *rxq,