From a915ccc9f2c80aa4c329262d89f93ea16d8792c9 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Thu, 5 Sep 2013 22:51:55 +0100 Subject: [PATCH] sfc: Reinitialise and re-validate datapath caps after MC reboot 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 --- drivers/net/ethernet/sfc/ef10.c | 10 ++++++++++ drivers/net/ethernet/sfc/nic.h | 3 +++ 2 files changed, 13 insertions(+) diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c index a4956b86d145..9f18ae984f9e 100644 --- a/drivers/net/ethernet/sfc/ef10.c +++ b/drivers/net/ethernet/sfc/ef10.c @@ -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(). */ diff --git a/drivers/net/ethernet/sfc/nic.h b/drivers/net/ethernet/sfc/nic.h index 4b1e188f7a2f..fda29d39032f 100644 --- a/drivers/net/ethernet/sfc/nic.h +++ b/drivers/net/ethernet/sfc/nic.h @@ -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; }; -- 2.20.1