From: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
To: netdev@vger.kernel.org
Cc: linux-sh@vger.kernel.org
Subject: [PATCH 2/2] sh_eth: fix RX buffer size calculation
Date: Sat, 24 Oct 2015 00:46:40 +0300 [thread overview]
Message-ID: <1571476.HbCo5gVB8j@wasted.cogentembedded.com> (raw)
In-Reply-To: <2249923.hKhT9K6gME@wasted.cogentembedded.com>
The RX buffer size calulation failed to account for the length granularity
(which is now 32 bytes)...
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
---
drivers/net/ethernet/renesas/sh_eth.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
Index: net/drivers/net/ethernet/renesas/sh_eth.c
===================================================================
--- net.orig/drivers/net/ethernet/renesas/sh_eth.c
+++ net/drivers/net/ethernet/renesas/sh_eth.c
@@ -1127,7 +1127,7 @@ static void sh_eth_ring_format(struct ne
struct sh_eth_txdesc *txdesc = NULL;
int rx_ringsize = sizeof(*rxdesc) * mdp->num_rx_ring;
int tx_ringsize = sizeof(*txdesc) * mdp->num_tx_ring;
- int skbuff_size = mdp->rx_buf_sz + SH_ETH_RX_ALIGN - 1;
+ int skbuff_size = mdp->rx_buf_sz + SH_ETH_RX_ALIGN + 32 - 1;
dma_addr_t dma_addr;
mdp->cur_rx = 0;
@@ -1450,7 +1450,7 @@ static int sh_eth_rx(struct net_device *
struct sk_buff *skb;
u16 pkt_len = 0;
u32 desc_status;
- int skbuff_size = mdp->rx_buf_sz + SH_ETH_RX_ALIGN - 1;
+ int skbuff_size = mdp->rx_buf_sz + SH_ETH_RX_ALIGN + 32 - 1;
dma_addr_t dma_addr;
boguscnt = min(boguscnt, *quota);
next prev parent reply other threads:[~2015-10-23 21:46 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-23 21:44 [PATCH 0/2] sh_eth: RX buffer alignment fixes Sergei Shtylyov
2015-10-23 21:46 ` [PATCH 1/2] sh_eth: fix RX buffer size alignment Sergei Shtylyov
2015-10-23 21:46 ` Sergei Shtylyov [this message]
2015-10-27 1:32 ` [PATCH 0/2] sh_eth: RX buffer alignment fixes David Miller
2015-10-29 19:58 ` Sergei Shtylyov
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