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net/mlx5: fix TSO segment size

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In case on multi segment packet, the TSO segment size
was taken from the last segment. This may lead to incorrect
values in case not all segments are initialized with the field.

Fixing it by taking the value from the first segment.

Fixes: 3f13f8c23a ("net/mlx5: support hardware TSO")
Cc: stable@dpdk.org

Signed-off-by: Shahaf Shuler <shahafs@mellanox.com>
Acked-by: Yongseok Koh <yskoh@mellanox.com>
Acked-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
This commit is contained in:
Shahaf Shuler 2017-06-20 08:24:47 +03:00 committed by Ferruh Yigit
parent 2d449f7c52
commit 83daf156a9
1 changed files with 3 additions and 1 deletions
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4
drivers/net/mlx5/mlx5_rxtx.c
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@ -527,6 +527,7 @@ mlx5_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n)
uint16_t ehdr;
uint8_t cs_flags = 0;
uint64_t tso = 0;
uint16_t tso_segsz = 0;
#ifdef MLX5_PMD_SOFT_COUNTERS
uint32_t total_length = 0;
#endif
@ -622,6 +623,7 @@ mlx5_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n)
tso_header_sz = buf->l2_len + vlan_sz +
buf->l3_len + buf->l4_len;
tso_segsz = buf->tso_segsz;
if (is_tunneled && txq->tunnel_en) {
tso_header_sz += buf->outer_l2_len +
@ -821,7 +823,7 @@ mlx5_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n)
};
wqe->eseg = (rte_v128u32_t){
0,
cs_flags | (htons(buf->tso_segsz) << 16),
cs_flags | (htons(tso_segsz) << 16),
0,
(ehdr << 16) | htons(tso_header_sz),
};