sfc: Provide hints to irqbalance daemon

Allocate IRQs with the name format <device>[-<type>]-<number> so that
future versions of irqbalanced understand what we're doing.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 24 insertions, 0 deletions

diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index 2faaa965afca..bba11490ef41 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -356,6 +356,27 @@ static int efx_probe_channel(struct efx_channel *channel)
 }
 
 
+static void efx_set_channel_names(struct efx_nic *efx)
+{
+        struct efx_channel *channel;
+        const char *type = "";
+        int number;
+
+        efx_for_each_channel(channel, efx) {
+                number = channel->channel;
+                if (efx->n_channels > efx->n_rx_queues) {
+                        if (channel->channel < efx->n_rx_queues) {
+                                type = "-rx";
+                        } else {
+                                type = "-tx";
+                                number -= efx->n_rx_queues;
+                        }
+                }
+                snprintf(channel->name, sizeof(channel->name),
+                         "%s%s-%d", efx->name, type, number);
+        }
+}
+
 /* Channels are shutdown and reinitialised whilst the NIC is running
  * to propagate configuration changes (mtu, checksum offload), or
  * to clear hardware error conditions
@@ -1002,6 +1023,7 @@ static int efx_probe_all(struct efx_nic *efx)
                         goto fail3;
                 }
         }
+        efx_set_channel_names(efx);
 
         return 0;
 
@@ -1483,6 +1505,7 @@ static int efx_netdev_event(struct notifier_block *this,
 
                 strcpy(efx->name, net_dev->name);
                 efx_mtd_rename(efx);
+                efx_set_channel_names(efx);
         }
 
         return NOTIFY_DONE;
@@ -1516,6 +1539,7 @@ static int efx_register_netdev(struct efx_nic *efx)
                 return rc;
         }
         strcpy(efx->name, net_dev->name);
+        efx_set_channel_names(efx);
 
         return 0;
 }