From: Alexandre Bounine <alexandre.bounine@idt.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>,
Alexandre Bounine <alexandre.bounine@idt.com>,
Matt Porter <mporter@kernel.crashing.org>,
Andre van Herk <andre.van.herk@prodrive-technologies.com>,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH 02/30] rapidio/rionet: add capability to change MTU
Date: Fri, 5 Feb 2016 18:19:18 -0500 [thread overview]
Message-ID: <1454714386-15259-3-git-send-email-alexandre.bounine@idt.com> (raw)
In-Reply-To: <1454714386-15259-1-git-send-email-alexandre.bounine@idt.com>
From: Aurelien Jacquiot <a-jacquiot@ti.com>
Replace default Ethernet-specific routine by the custom one to allow
setting of larger MTU supported by RapidIO messaging (max RIO packet
size is 4096 bytes).
Signed-off-by: Aurelien Jacquiot <a-jacquiot@ti.com>
Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com>
Cc: linux-kernel@vger.kernel.org
Cc: netdev@vger.kernel.org
---
drivers/net/rionet.c | 17 +++++++++++++++--
1 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/drivers/net/rionet.c b/drivers/net/rionet.c
index e7034c5..d3d6e35 100644
--- a/drivers/net/rionet.c
+++ b/drivers/net/rionet.c
@@ -48,6 +48,8 @@ MODULE_LICENSE("GPL");
#define RIONET_TX_RING_SIZE CONFIG_RIONET_TX_SIZE
#define RIONET_RX_RING_SIZE CONFIG_RIONET_RX_SIZE
#define RIONET_MAX_NETS 8
+#define RIONET_MSG_SIZE RIO_MAX_MSG_SIZE
+#define RIONET_MAX_MTU (RIONET_MSG_SIZE - ETH_HLEN)
struct rionet_private {
struct rio_mport *mport;
@@ -443,6 +445,17 @@ static void rionet_set_msglevel(struct net_device *ndev, u32 value)
rnet->msg_enable = value;
}
+static int rionet_change_mtu(struct net_device *ndev, int new_mtu)
+{
+ if ((new_mtu < 68) || (new_mtu > RIONET_MAX_MTU)) {
+ printk(KERN_ERR "%s: Invalid MTU size %d\n",
+ ndev->name, new_mtu);
+ return -EINVAL;
+ }
+ ndev->mtu = new_mtu;
+ return 0;
+}
+
static const struct ethtool_ops rionet_ethtool_ops = {
.get_drvinfo = rionet_get_drvinfo,
.get_msglevel = rionet_get_msglevel,
@@ -454,7 +467,7 @@ static const struct net_device_ops rionet_netdev_ops = {
.ndo_open = rionet_open,
.ndo_stop = rionet_close,
.ndo_start_xmit = rionet_start_xmit,
- .ndo_change_mtu = eth_change_mtu,
+ .ndo_change_mtu = rionet_change_mtu,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = eth_mac_addr,
};
@@ -489,7 +502,7 @@ static int rionet_setup_netdev(struct rio_mport *mport, struct net_device *ndev)
ndev->dev_addr[5] = device_id & 0xff;
ndev->netdev_ops = &rionet_netdev_ops;
- ndev->mtu = RIO_MAX_MSG_SIZE - 14;
+ ndev->mtu = RIONET_MAX_MTU;
ndev->features = NETIF_F_LLTX;
SET_NETDEV_DEV(ndev, &mport->dev);
ndev->ethtool_ops = &rionet_ethtool_ops;
--
1.7.8.4
next prev parent reply other threads:[~2016-02-05 23:30 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-05 23:19 [PATCH 00/30] rapidio: mport character driver and subsystem updates Alexandre Bounine
2016-02-05 23:19 ` [PATCH 01/30] rapidio/rionet: fix deadlock on SMP Alexandre Bounine
2016-02-05 23:19 ` Alexandre Bounine [this message]
2016-02-05 23:19 ` [PATCH 03/30] rapidio/tsi721: fix hardcoded MRRS setting Alexandre Bounine
2016-02-05 23:19 ` [PATCH 04/30] rapidio/tsi721: add check for overlapped IB window mappings Alexandre Bounine
2016-02-05 23:19 ` [PATCH 05/30] rapidio/tsi721: add option to configure direct mapping of IB window Alexandre Bounine
2016-02-05 23:19 ` [PATCH 06/30] rapidio/tsi721_dma: fix pending transaction queue handling Alexandre Bounine
2016-02-05 23:19 ` [PATCH 07/30] rapidio: add query_mport operation Alexandre Bounine
2016-02-05 23:19 ` [PATCH 08/30] rapidio/tsi721: add query_mport callback Alexandre Bounine
2016-02-05 23:19 ` [PATCH 09/30] rapidio: add shutdown notification for RapidIO devices Alexandre Bounine
2016-02-05 23:19 ` [PATCH 10/30] rapidio/tsi721: add shutdown notification callback Alexandre Bounine
2016-02-05 23:19 ` [PATCH 11/30] rapidio/rionet: add shutdown event handling Alexandre Bounine
2016-02-05 23:19 ` [PATCH 12/30] rapidio: rework common RIO device add/delete routines Alexandre Bounine
2016-02-05 23:19 ` [PATCH 13/30] rapidio: move net allocation into core code Alexandre Bounine
2016-02-05 23:19 ` [PATCH 14/30] rapidio: add core mport removal support Alexandre Bounine
2016-02-05 23:19 ` [PATCH 15/30] rapidio/tsi721: add HW specific mport removal Alexandre Bounine
2016-02-05 23:19 ` [PATCH 16/30] powerpc/fsl_rio: changes to mport registration Alexandre Bounine
2016-02-05 23:19 ` [PATCH 17/30] rapidio/rionet: add locking into add/remove device Alexandre Bounine
2016-02-05 23:19 ` [PATCH 18/30] rapidio/rionet: add mport removal handling Alexandre Bounine
2016-02-05 23:19 ` [PATCH 19/30] rapidio: add lock protection for doorbell list Alexandre Bounine
2016-02-05 23:19 ` [PATCH 20/30] rapidio: move rio_local_set_device_id function to the common core Alexandre Bounine
2016-02-05 23:19 ` [PATCH 21/30] rapidio: move rio_pw_enable into core code Alexandre Bounine
2016-02-05 23:19 ` [PATCH 22/30] rapidio: add global inbound port write interfaces Alexandre Bounine
2016-02-08 21:18 ` Andrew Morton
2016-02-09 13:56 ` Bounine, Alexandre
2016-02-05 23:19 ` [PATCH 23/30] rapidio/tsi721: fix locking in OB_MSG processing Alexandre Bounine
2016-02-05 23:19 ` [PATCH 24/30] rapidio: add outbound window support Alexandre Bounine
2016-02-05 23:19 ` [PATCH 25/30] rapidio/tsi721: add outbound windows mapping support Alexandre Bounine
2016-02-05 23:19 ` [PATCH 26/30] rapidio/tsi721: add filtered debug output Alexandre Bounine
2016-02-05 23:19 ` [PATCH 27/30] rapidio/tsi721_dma: update error reporting from prep_sg callback Alexandre Bounine
2016-02-05 23:19 ` [PATCH 28/30] rapidio/tsi721_dma: fix synchronization issues Alexandre Bounine
2016-02-05 23:19 ` [PATCH 29/30] rapidio/tsi721_dma: fix hardware error handling Alexandre Bounine
2016-02-05 23:19 ` [PATCH 30/30] rapidio: add mport char device driver Alexandre Bounine
2016-04-05 10:36 ` Gabriel Laskar
2016-04-05 11:45 ` Bounine, Alexandre
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