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Commit Message
Testpmd tries to calculate mbuf size based on "max Rx packet size" and
"max MTU segment number".
When driver set a "nb_mtu_seg_max" to zero, it causes division by zero
segmentation fault in testpmd.
If the PMD set "nb_mtu_seg_max" to zero, testpmd shouldn't try to
calculate the mbuf size.
Fixes: 33f9630fc23d ("app/testpmd: create mbuf based on max supported segments")
Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
---
Cc: Sunil Kumar Kori <skori@marvell.com>
Cc: YufengX Mo <yufengx.mo@intel.com>
---
app/test-pmd/testpmd.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
Comments
14/06/2019 20:19, Ferruh Yigit:
> Testpmd tries to calculate mbuf size based on "max Rx packet size" and
> "max MTU segment number".
> When driver set a "nb_mtu_seg_max" to zero, it causes division by zero
> segmentation fault in testpmd.
>
> If the PMD set "nb_mtu_seg_max" to zero, testpmd shouldn't try to
> calculate the mbuf size.
>
> Fixes: 33f9630fc23d ("app/testpmd: create mbuf based on max supported segments")
>
> Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Applied, thanks
@@ -1174,7 +1174,8 @@ init_config(void)
/* Check for maximum number of segments per MTU. Accordingly
* update the mbuf data size.
*/
- if (port->dev_info.rx_desc_lim.nb_mtu_seg_max != UINT16_MAX) {
+ if (port->dev_info.rx_desc_lim.nb_mtu_seg_max != UINT16_MAX &&
+ port->dev_info.rx_desc_lim.nb_mtu_seg_max != 0) {
data_size = rx_mode.max_rx_pkt_len /
port->dev_info.rx_desc_lim.nb_mtu_seg_max;