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enic: reconfigure resources for kdump crash kernel 

When running in kdump kernel, reduce number of resources used by the driver.
This will enable NIC to operate in low memory kdump kernel environment.

Also change the driver version to .83

Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Govindarajulu Varadarajan 2015-01-03 19:35:44 +05:30 committed by David S. Miller
parent 9ace422320
commit 3f255dcc97
2 changed files with 18 additions and 1 deletions
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2
drivers/net/ethernet/cisco/enic/enic.h
View File

@ -33,7 +33,7 @@
#define DRV_NAME "enic"
#define DRV_DESCRIPTION "Cisco VIC Ethernet NIC Driver"
#define DRV_VERSION "2.1.1.67"
#define DRV_VERSION "2.1.1.83"
#define DRV_COPYRIGHT "Copyright 2008-2013 Cisco Systems, Inc"
#define ENIC_BARS_MAX 6

17
drivers/net/ethernet/cisco/enic/enic_main.c
View File

@ -45,6 +45,7 @@
#ifdef CONFIG_NET_RX_BUSY_POLL
#include <net/busy_poll.h>
#endif
#include <linux/crash_dump.h>
#include "cq_enet_desc.h"
#include "vnic_dev.h"
@ -2265,6 +2266,18 @@ static void enic_dev_deinit(struct enic *enic)
enic_clear_intr_mode(enic);
}
static void enic_kdump_kernel_config(struct enic *enic)
{
if (is_kdump_kernel()) {
dev_info(enic_get_dev(enic), "Running from within kdump kernel. Using minimal resources\n");
enic->rq_count = 1;
enic->wq_count = 1;
enic->config.rq_desc_count = ENIC_MIN_RQ_DESCS;
enic->config.wq_desc_count = ENIC_MIN_WQ_DESCS;
enic->config.mtu = min_t(u16, 1500, enic->config.mtu);
}
}
static int enic_dev_init(struct enic *enic)
{
struct device *dev = enic_get_dev(enic);
@ -2294,6 +2307,10 @@ static int enic_dev_init(struct enic *enic)
enic_get_res_counts(enic);
/* modify resource count if we are in kdump_kernel
*/
enic_kdump_kernel_config(enic);
/* Set interrupt mode based on resource counts and system
* capabilities
*/