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ixgbe: make vector stores unaligned

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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>
This commit is contained in:
Bruce Richardson 2014-08-27 16:51:17 +01:00 committed by Thomas Monjalon
parent 7822c43aba
commit f403924724
1 changed files with 2 additions and 2 deletions
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4
lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c
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@ -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();