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net/vmxnet3: ignore empty segments in reception

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When several TCP fragments are contained in a packet that is only one mbuf
segment long, vmxnet3 receives an empty segment following first one, that
contains offload information. In current version, this segment is
propagated as is to upper application.
Remove those empty segments directly when receiving buffers, they may
generate unneeded extra processing in the upper application.

Signed-off-by: Didier Pallard <didier.pallard@6wind.com>
Acked-by: Yong Wang <yongwang@vmware.com>
This commit is contained in:
Didier Pallard 2018-03-28 17:43:48 +02:00 committed by Ferruh Yigit
parent ae2705b80d
commit 595d08d105
1 changed files with 9 additions and 4 deletions
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13
drivers/net/vmxnet3/vmxnet3_rxtx.c
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@ -925,18 +925,23 @@ vmxnet3_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
}
rxq->start_seg = rxm;
rxq->last_seg = rxm;
vmxnet3_rx_offload(hw, rcd, rxm, 1);
} else {
struct rte_mbuf *start = rxq->start_seg;
RTE_ASSERT(rxd->btype == VMXNET3_RXD_BTYPE_BODY);
start->pkt_len += rxm->data_len;
start->nb_segs++;
if (rxm->data_len) {
start->pkt_len += rxm->data_len;
start->nb_segs++;
rxq->last_seg->next = rxm;
rxq->last_seg->next = rxm;
rxq->last_seg = rxm;
} else {
rte_pktmbuf_free_seg(rxm);
}
}
rxq->last_seg = rxm;
if (rcd->eop) {
struct rte_mbuf *start = rxq->start_seg;