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baseband/acc100: add protection for some negative scenario

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Catch exception in PMD in case of invalid input parameter.

Fixes: 5ad5060f8f7a ("baseband/acc100: add LDPC processing functions")
Cc: stable@dpdk.org

Signed-off-by: Nicolas Chautru <nicolas.chautru@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
This commit is contained in:
Nicolas Chautru 2022-05-31 15:31:43 -07:00 committed by Akhil Goyal
parent 60a623408b
commit 8454d94825
1 changed files with 6 additions and 0 deletions
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6
drivers/baseband/acc100/rte_acc100_pmd.c
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@ -1236,6 +1236,8 @@ get_k0(uint16_t n_cb, uint16_t z_c, uint8_t bg, uint8_t rv_index)
return (bg == 1 ? ACC100_K0_3_1 : ACC100_K0_3_2) * z_c;
}
/* LBRM case - includes a division by N */
if (unlikely(z_c == 0))
return 0;
if (rv_index == 1)
return (((bg == 1 ? ACC100_K0_1_1 : ACC100_K0_1_2) * n_cb)
/ n) * z_c;
@ -1764,6 +1766,10 @@ acc100_dma_desc_td_fill(struct rte_bbdev_dec_op *op,
/* Soft output */
if (check_bit(op->turbo_dec.op_flags, RTE_BBDEV_TURBO_SOFT_OUTPUT)) {
if (op->turbo_dec.soft_output.data == 0) {
rte_bbdev_log(ERR, "Soft output is not defined");
return -1;
}
if (check_bit(op->turbo_dec.op_flags,
RTE_BBDEV_TURBO_EQUALIZER))
*s_out_length = e;