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cxgb4: Force cxgb4 driver as MASTER in kdump kernel 

When is_kdump_kernel() is true, Forcing cxgb4 driver as Master so we can
reinitialize the Firmware/Chip. Also reduce memory usage by disabling
offload.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hariprasad Shenai 2016-06-14 14:39:30 +05:30 committed by David S. Miller
parent 88da48f497
commit c5a8c0f3aa
1 changed files with 8 additions and 1 deletions
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9
drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
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@ -64,6 +64,7 @@
#include <net/bonding.h>
#include <net/addrconf.h>
#include <asm/uaccess.h>
#include <linux/crash_dump.h>
#include "cxgb4.h"
#include "t4_regs.h"
@ -3735,7 +3736,8 @@ static int adap_init0(struct adapter *adap)
return ret;
/* Contact FW, advertising Master capability */
ret = t4_fw_hello(adap, adap->mbox, adap->mbox, MASTER_MAY, &state);
ret = t4_fw_hello(adap, adap->mbox, adap->mbox,
is_kdump_kernel() ? MASTER_MUST : MASTER_MAY, &state);
if (ret < 0) {
dev_err(adap->pdev_dev, "could not connect to FW, error %d\n",
ret);
@ -4366,6 +4368,11 @@ static void cfg_queues(struct adapter *adap)
if (q10g > netif_get_num_default_rss_queues())
q10g = netif_get_num_default_rss_queues();
/* Reduce memory usage in kdump environment, disable all offload.
*/
if (is_kdump_kernel())
adap->params.offload = 0;
for_each_port(adap, i) {
struct port_info *pi = adap2pinfo(adap, i);