[dpdk-dev] [PATCH v2 3/5] net/i40e: fix dereference after null check coverity

[Xiao Zhang]

This patch fixes (dereference after null check) coverity issue.
The address of first segmented packets was not set correctly during
reassembling packets which led to this issue.

Coverity issue: 343422
Coverity issue: 343403
Fixes: ca74903b ("net/i40e: extract non-x86 specific code from vector
driver")
Cc: sta...@dpdk.org

Signed-off-by: Xiao Zhang <xiao.zh...@intel.com>
---
 drivers/net/i40e/i40e_rxtx_vec_avx2.c | 1 +
 drivers/net/i40e/i40e_rxtx_vec_sse.c  | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/net/i40e/i40e_rxtx_vec_avx2.c 
b/drivers/net/i40e/i40e_rxtx_vec_avx2.c
index c4dc990..6f32789 100644
--- a/drivers/net/i40e/i40e_rxtx_vec_avx2.c
+++ b/drivers/net/i40e/i40e_rxtx_vec_avx2.c
@@ -590,6 +590,7 @@ i40e_recv_scattered_burst_vec_avx2(void *rx_queue, struct 
rte_mbuf **rx_pkts,
                        i++;
                if (i == nb_bufs)
                        return nb_bufs;
+               rxq->pkt_first_seg = rx_pkts[i];
        }
        return i + reassemble_packets(rxq, &rx_pkts[i], nb_bufs - i,
                &split_flags[i]);
diff --git a/drivers/net/i40e/i40e_rxtx_vec_sse.c 
b/drivers/net/i40e/i40e_rxtx_vec_sse.c
index 3b22588..1fc66b7 100644
--- a/drivers/net/i40e/i40e_rxtx_vec_sse.c
+++ b/drivers/net/i40e/i40e_rxtx_vec_sse.c
@@ -506,6 +506,7 @@ i40e_recv_scattered_pkts_vec(void *rx_queue, struct 
rte_mbuf **rx_pkts,
                        i++;
                if (i == nb_bufs)
                        return nb_bufs;
+               rxq->pkt_first_seg = rx_pkts[i];
        }
        return i + reassemble_packets(rxq, &rx_pkts[i], nb_bufs - i,
                &split_flags[i]);
-- 
2.7.4