ixgbe: make vector stores unaligned

When writing to the mbuf array for receiving packets, do not assume
16-byte alignment by using aligned stores. If the pointers are only
8-byte aligned, the program will crash due to incorrect alignment.
Changing "store" to "storeu" fixes this.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Thomas Monjalon <thomas.monjalon@6wind.com>

diff --git a/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c b/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c
index fe39ca2..92e07de 100644 (file)
--- a/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c
+++ b/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c
@@ -277,7 +277,7 @@ ixgbe_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
                descs[3] = _mm_loadu_si128((__m128i *)(rxdp + 3));
 
                /* B.2 copy 2 mbuf point into rx_pkts  */
-               _mm_store_si128((__m128i *)&rx_pkts[pos], mbp1);
+               _mm_storeu_si128((__m128i *)&rx_pkts[pos], mbp1);
 
                /* B.1 load 1 mbuf point */
                mbp2 = _mm_loadu_si128((__m128i *)&sw_ring[pos+2]);
@@ -288,7 +288,7 @@ ixgbe_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
                descs[0] = _mm_loadu_si128((__m128i *)(rxdp));
 
                /* B.2 copy 2 mbuf point into rx_pkts  */
-               _mm_store_si128((__m128i *)&rx_pkts[pos+2], mbp2);
+               _mm_storeu_si128((__m128i *)&rx_pkts[pos+2], mbp2);
 
                /* avoid compiler reorder optimization */
                rte_compiler_barrier();