If the length of data_len in mbuf is less than 17 or greater than the maximum frame size, it is illegal.
These illegal packets will lead to TX/RX hang and can't recover automatically. This patch check those illegal packets and protect TX/RX from hanging. Fixes: 17c7d0f9d6a4 ("net/ice: support basic Rx/Tx") Signed-off-by: Kevin Liu <kevinx....@intel.com> --- drivers/net/ice/ice_rxtx.c | 11 +++++++++++ drivers/net/ice/ice_rxtx.h | 2 ++ 2 files changed, 13 insertions(+) diff --git a/drivers/net/ice/ice_rxtx.c b/drivers/net/ice/ice_rxtx.c index 5af7c0c8f6..d1e1fadf9d 100644 --- a/drivers/net/ice/ice_rxtx.c +++ b/drivers/net/ice/ice_rxtx.c @@ -3442,6 +3442,9 @@ ice_prep_pkts(__rte_unused void *tx_queue, struct rte_mbuf **tx_pkts, int i, ret; uint64_t ol_flags; struct rte_mbuf *m; + struct ice_tx_queue *txq = tx_queue; + struct rte_eth_dev *dev = &rte_eth_devices[txq->port_id]; + uint16_t max_frame_size = dev->data->mtu + ICE_ETH_OVERHEAD; for (i = 0; i < nb_pkts; i++) { m = tx_pkts[i]; @@ -3458,6 +3461,14 @@ ice_prep_pkts(__rte_unused void *tx_queue, struct rte_mbuf **tx_pkts, return i; } + /* check the data_len in mbuf */ + if (m->data_len < ICE_TX_MIN_PKT_LEN || + m->data_len > max_frame_size) { + rte_errno = EINVAL; + PMD_DRV_LOG(ERR, "INVALID mbuf: bad data_len=[%hu]", m->data_len); + return i; + } + #ifdef RTE_ETHDEV_DEBUG_TX ret = rte_validate_tx_offload(m); if (ret != 0) { diff --git a/drivers/net/ice/ice_rxtx.h b/drivers/net/ice/ice_rxtx.h index 6c08c175dc..e1d4fe8e47 100644 --- a/drivers/net/ice/ice_rxtx.h +++ b/drivers/net/ice/ice_rxtx.h @@ -40,6 +40,8 @@ #define ICE_RXDID_COMMS_OVS 22 +#define ICE_TX_MIN_PKT_LEN 17 + extern uint64_t ice_timestamp_dynflag; extern int ice_timestamp_dynfield_offset; -- 2.25.1