[dpdk-dev] [memnic PATCH 2/5] pmd: prepare to support variable frame size
Hiroshi Shimamoto
h-shimamoto at ct.jp.nec.com
Fri Jun 6 13:06:07 CEST 2014
From: Hiroshi Shimamoto <h-shimamoto at ct.jp.nec.com>
Add framesz field in adapter structure, and initialized with the current
frame size.
Replace length check on TX/RX with the above frame size.
Signed-off-by: Hiroshi Shimamoto <h-shimamoto at ct.jp.nec.com>
Reviewed-by: Hayato Momma <h-momma at ce.jp.nec.com>
---
pmd/pmd_memnic.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/pmd/pmd_memnic.c b/pmd/pmd_memnic.c
index 4abdf26..6b6bcb3 100644
--- a/pmd/pmd_memnic.c
+++ b/pmd/pmd_memnic.c
@@ -49,6 +49,7 @@
struct memnic_adapter {
struct memnic_area *nic;
int up_idx, down_idx;
+ uint32_t framesz;
struct rte_mempool *mp;
struct ether_addr mac_addr;
/*
@@ -107,6 +108,7 @@ static int memnic_dev_start(struct rte_eth_dev *dev)
adapter->nic->hdr.reset = 1;
/* no need to wait here */
adapter->up_idx = adapter->down_idx = 0;
+ adapter->framesz = MEMNIC_MAX_FRAME_LEN;
return 0;
}
@@ -256,6 +258,7 @@ static uint16_t memnic_recv_pkts(void *rx_queue,
struct rte_mbuf *mb;
uint16_t nr;
uint64_t pkts, bytes, errs;
+ uint32_t framesz = adapter->framesz;
int idx;
struct rte_eth_stats *st = &adapter->stats[rte_lcore_id()];
@@ -268,7 +271,7 @@ static uint16_t memnic_recv_pkts(void *rx_queue,
p = &data->packets[idx];
if (p->status != MEMNIC_PKT_ST_FILLED)
break;
- if (p->len > MEMNIC_MAX_FRAME_LEN) {
+ if (p->len > framesz) {
errs++;
goto drop;
}
@@ -317,6 +320,7 @@ static uint16_t memnic_xmit_pkts(void *tx_queue,
int idx;
struct rte_eth_stats *st = &adapter->stats[rte_lcore_id()];
uint64_t pkts, bytes, errs;
+ uint32_t framesz = adapter->framesz;
if (!adapter->nic->hdr.valid)
return 0;
@@ -324,11 +328,11 @@ static uint16_t memnic_xmit_pkts(void *tx_queue,
pkts = bytes = errs = 0;
for (nr = 0; nr < nb_pkts; nr++) {
- int pkt_len = rte_pktmbuf_pkt_len(tx_pkts[nr]);
+ uint32_t pkt_len = rte_pktmbuf_pkt_len(tx_pkts[nr]);
struct rte_mbuf *sg;
void *ptr;
- if (pkt_len > MEMNIC_MAX_FRAME_LEN) {
+ if (pkt_len > framesz) {
errs++;
break;
}
--
1.8.4
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