[dpdk-dev] [PATCH 2/2] net/tap: remove minimum packet size in Rx

[Pascal Mazon <pascal.mazon@6wind.com>]

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: 4a6bb33dc67c ("net/tap: support segmented mbufs")

Signed-off-by: Pascal Mazon <pascal.mazon@6wind.com>
---
 drivers/net/tap/rte_eth_tap.c | 13 -------------
 1 file changed, 13 deletions(-)

diff --git a/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c
index 069200199573..eef6e6cc2828 100644
--- a/drivers/net/tap/rte_eth_tap.c
+++ b/drivers/net/tap/rte_eth_tap.c
@@ -875,7 +875,6 @@ 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;
@@ -901,18 +900,6 @@ 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;
-- 
2.12.0.306.g4a9b9b3