Some 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.
Signed-off-by: Yanglong Wu <yanglong...@intel.com>
---
v2:
fix coding style issue and spelling error
---
v3:
rework as comments
---
v4:
fix spelling error
---
drivers/net/i40e/i40e_rxtx.c | 15 +++++++++++----
drivers/net/i40e/i40e_rxtx.h | 2 ++
2 files changed, 13 insertions(+), 4 deletions(-)
diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c
index 6032d5541..e7916f99c 100644
--- a/drivers/net/i40e/i40e_rxtx.c
+++ b/drivers/net/i40e/i40e_rxtx.c
@@ -1439,13 +1439,13 @@ i40e_prep_pkts(__rte_unused void *tx_queue, struct
rte_mbuf **tx_pkts,
/* Check for m->nb_segs to not exceed the limits. */
if (!(ol_flags & PKT_TX_TCP_SEG)) {
- if (m->nb_segs > I40E_TX_MAX_SEG ||
- m->nb_segs > I40E_TX_MAX_MTU_SEG) {
+ if (m->nb_segs > I40E_TX_MAX_MTU_SEG) {
rte_errno = -EINVAL;
return i;
}
- } else if ((m->tso_segsz < I40E_MIN_TSO_MSS) ||
- (m->tso_segsz > I40E_MAX_TSO_MSS)) {
+ } else if (m->nb_segs > I40E_TX_MAX_SEG ||
+ m->tso_segsz < I40E_MIN_TSO_MSS ||
+ m->tso_segsz > I40E_MAX_TSO_MSS) {
/* MSS outside the range (256B - 9674B) are considered
* malicious
*/
@@ -1458,6 +1458,13 @@ i40e_prep_pkts(__rte_unused void *tx_queue, struct
rte_mbuf **tx_pkts,
return i;
}
+ /* check the size of packet */
+ if (m->pkt_len > I40E_FRAME_SIZE_MAX ||
+ m->pkt_len < I40E_TX_MIN_PKT_LEN) {
+ rte_errno = -EINVAL;
+ return i;
+ }
+
#ifdef RTE_LIBRTE_ETHDEV_DEBUG
ret = rte_validate_tx_offload(m);
if (ret != 0) {
diff --git a/drivers/net/i40e/i40e_rxtx.h b/drivers/net/i40e/i40e_rxtx.h
index ea73a8a1b..3fc619af9 100644
--- a/drivers/net/i40e/i40e_rxtx.h
+++ b/drivers/net/i40e/i40e_rxtx.h
@@ -30,6 +30,8 @@
#define I40E_TX_MAX_SEG UINT8_MAX
#define I40E_TX_MAX_MTU_SEG 8
+#define I40E_TX_MIN_PKT_LEN 17
+
#undef container_of
#define container_of(ptr, type, member) ({ \
typeof(((type *)0)->member)(*__mptr) = (ptr); \
--
2.11.0
