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cxgb4: Add a check for flashing FW using ethtool

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Don't let T4 firmware flash on a T5 adapter and vice-versa
using ethtool

Based on original work by Casey Leedom <leedom@chelsio.com>

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hariprasad Shenai 2014-12-03 11:49:50 +05:30 committed by David S. Miller
parent 6000df00fd
commit 79af221d67
1 changed files with 26 additions and 0 deletions
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26
drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
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@ -1131,6 +1131,27 @@ unsigned int t4_flash_cfg_addr(struct adapter *adapter)
return FLASH_CFG_START;
}
/* Return TRUE if the specified firmware matches the adapter. I.e. T4
* firmware for T4 adapters, T5 firmware for T5 adapters, etc. We go ahead
* and emit an error message for mismatched firmware to save our caller the
* effort ...
*/
static bool t4_fw_matches_chip(const struct adapter *adap,
const struct fw_hdr *hdr)
{
/* The expression below will return FALSE for any unsupported adapter
* which will keep us "honest" in the future ...
*/
if ((is_t4(adap->params.chip) && hdr->chip == FW_HDR_CHIP_T4) ||
(is_t5(adap->params.chip) && hdr->chip == FW_HDR_CHIP_T5))
return true;
dev_err(adap->pdev_dev,
"FW image (%d) is not suitable for this adapter (%d)\n",
hdr->chip, CHELSIO_CHIP_VERSION(adap->params.chip));
return false;
}
/**
* t4_load_fw - download firmware
* @adap: the adapter
@ -1170,6 +1191,8 @@ int t4_load_fw(struct adapter *adap, const u8 *fw_data, unsigned int size)
FW_MAX_SIZE);
return -EFBIG;
}
if (!t4_fw_matches_chip(adap, hdr))
return -EINVAL;
for (csum = 0, i = 0; i < size / sizeof(csum); i++)
csum += ntohl(p[i]);
@ -3080,6 +3103,9 @@ int t4_fw_upgrade(struct adapter *adap, unsigned int mbox,
const struct fw_hdr *fw_hdr = (const struct fw_hdr *)fw_data;
int reset, ret;
if (!t4_fw_matches_chip(adap, fw_hdr))
return -EINVAL;
ret = t4_fw_halt(adap, mbox, force);
if (ret < 0 && !force)
return ret;