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sfc: Reinitialise and re-validate datapath caps after MC reboot

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After an MC reboot, the datapath may be running a different firmware
variant and have different capabilities.  It is critical that we know
the current capabilities so that we can pass valid flags to
MC_CMD_INIT_EVQ.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
This commit is contained in:
Ben Hutchings 2013-09-05 22:51:55 +01:00
parent e5a2538a48
commit a915ccc9f2
2 changed files with 13 additions and 0 deletions
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10
drivers/net/ethernet/sfc/ef10.c
View File

@ -343,6 +343,13 @@ static int efx_ef10_init_nic(struct efx_nic *efx)
struct efx_ef10_nic_data *nic_data = efx->nic_data;
int rc;
if (nic_data->must_check_datapath_caps) {
rc = efx_ef10_init_datapath_caps(efx);
if (rc)
return rc;
nic_data->must_check_datapath_caps = false;
}
if (nic_data->must_realloc_vis) {
/* We cannot let the number of VIs change now */
rc = efx_ef10_alloc_vis(efx, nic_data->n_allocated_vis,
@ -711,6 +718,9 @@ static int efx_ef10_mcdi_poll_reboot(struct efx_nic *efx)
nic_data->must_restore_filters = true;
nic_data->rx_rss_context = EFX_EF10_RSS_CONTEXT_INVALID;
/* The datapath firmware might have been changed */
nic_data->must_check_datapath_caps = true;
/* MAC statistics have been cleared on the NIC; clear the local
* statistic that we update with efx_update_diff_stat().
*/

3
drivers/net/ethernet/sfc/nic.h
View File

@ -400,6 +400,8 @@ enum {
* @rx_rss_context: Firmware handle for our RSS context
* @stats: Hardware statistics
* @workaround_35388: Flag: firmware supports workaround for bug 35388
* @must_check_datapath_caps: Flag: @datapath_caps needs to be revalidated
* after MC reboot
* @datapath_caps: Capabilities of datapath firmware (FLAGS1 field of
* %MC_CMD_GET_CAPABILITIES response)
*/
@ -413,6 +415,7 @@ struct efx_ef10_nic_data {
u32 rx_rss_context;
u64 stats[EF10_STAT_COUNT];
bool workaround_35388;
bool must_check_datapath_caps;
u32 datapath_caps;
};