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net/tap: remove minimum packet size in Rx

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With support for segmented packets, it is now possible to easily receive
packets of many sizes, given an adequate number of descriptors.

Remove limitation on the minimum size of mbuf: on reception, if a packet
won't fit in the queue's mbufs, it will be detected in the packet info
and the packet will be discarded.

Fixes: 0781f5762c ("net/tap: support segmented mbufs")

Signed-off-by: Pascal Mazon <pascal.mazon@6wind.com>
Acked-by: Keith Wiles <keith.wiles@intel.com>
This commit is contained in:
Pascal Mazon 2017-03-30 10:52:48 +02:00 committed by Ferruh Yigit
parent 6b890c2cd6
commit f279f6f2bd
1 changed files with 0 additions and 13 deletions
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13
drivers/net/tap/rte_eth_tap.c
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@ -860,7 +860,6 @@ tap_rx_queue_setup(struct rte_eth_dev *dev,
struct rte_mbuf **tmp = &rxq->pool;
struct iovec (*iovecs)[nb_rx_desc + 1];
int data_off = RTE_PKTMBUF_HEADROOM;
uint16_t buf_size;
int ret = 0;
int fd;
int i;
@ -886,18 +885,6 @@ tap_rx_queue_setup(struct rte_eth_dev *dev,
}
rxq->iovecs = iovecs;
/* Now get the space available for data in the mbuf */
buf_size = (uint16_t)(rte_pktmbuf_data_room_size(mp) -
RTE_PKTMBUF_HEADROOM);
if (buf_size < ETH_FRAME_LEN) {
RTE_LOG(WARNING, PMD,
"%s: %d bytes will not fit in mbuf (%d bytes)\n",
dev->data->name, ETH_FRAME_LEN, buf_size);
ret = -ENOMEM;
goto error;
}
fd = rx_setup_queue(dev, internals, rx_queue_id);
if (fd == -1) {
ret = fd;