netdev - [PATCH net-next 12/13] nfp: mark port state as stale if update failed

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Date:   Fri, 19 May 2017 15:01:54 -0700
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     netdev@...r.kernel.org
Cc:     kubakici@...pl, oss-drivers@...ronome.com,
        Jakub Kicinski <jakub.kicinski@...ronome.com>
Subject: [PATCH net-next 12/13] nfp: mark port state as stale if update failed

If reading new state of the port failed, mark the port back as CHANGED.
This way next user state request will trigger refresh, which will
hopefully succeed.

Signed-off-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
Reviewed-by: Simon Horman <simon.horman@...ronome.com>
---
 drivers/net/ethernet/netronome/nfp/nfp_net_main.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_main.c b/drivers/net/ethernet/netronome/nfp/nfp_net_main.c
index 3ee9a9772110..74fdef44e139 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_main.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_main.c
@@ -528,6 +528,7 @@ nfp_net_eth_port_update(struct nfp_cpp *cpp, struct nfp_port *port,
 
 	eth_port = nfp_net_find_port(eth_table, port->eth_id);
 	if (!eth_port) {
+		set_bit(NFP_PORT_CHANGED, &port->flags);
 		nfp_warn(cpp, "Warning: port #%d not present after reconfig\n",
 			 port->eth_id);
 		return -EIO;
@@ -563,6 +564,9 @@ static void nfp_net_refresh_vnics(struct work_struct *work)
 
 	eth_table = nfp_eth_read_ports(pf->cpp);
 	if (!eth_table) {
+		list_for_each_entry(port, &pf->ports, port_list)
+			if (__nfp_port_get_eth_port(port))
+				set_bit(NFP_PORT_CHANGED, &port->flags);
 		rtnl_unlock();
 		nfp_err(pf->cpp, "Error refreshing port config!\n");
 		goto out;
@@ -611,6 +615,7 @@ int nfp_net_refresh_eth_port(struct nfp_port *port)
 
 	eth_table = nfp_eth_read_ports(cpp);
 	if (!eth_table) {
+		set_bit(NFP_PORT_CHANGED, &port->flags);
 		nfp_err(cpp, "Error refreshing port state table!\n");
 		return -EIO;
 	}
-- 
2.11.0