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authorBen Hutchings <bhutchings@solarflare.com>2009-04-14 19:47:46 -0700
committerDavid S. Miller <davem@davemloft.net>2009-04-14 19:47:46 -0700
commit718cff1eec595ce6ab0635b8160a51ee37d9268d (patch)
treeee512c3d6d6370586b3219e92e5451475a7413b7
parent2690f8d62e98779c71625dba9a0fd525d8b2263d (diff)
sfc: Match calls to netif_napi_add() and netif_napi_del()
sfc could call netif_napi_add() multiple times for the same napi_struct, corrupting the list of napi_structs for the associated device and leading to a busy-loop on device removal. Move the call to netif_napi_add() and add a call to netif_napi_del() in the obvious places. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/sfc/efx.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index dee23b159df2..7269a426051c 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -448,9 +448,6 @@ static void efx_init_channels(struct efx_nic *efx)
WARN_ON(channel->rx_pkt != NULL);
efx_rx_strategy(channel);
-
- netif_napi_add(channel->napi_dev, &channel->napi_str,
- efx_poll, napi_weight);
}
}
@@ -1321,6 +1318,8 @@ static int efx_init_napi(struct efx_nic *efx)
efx_for_each_channel(channel, efx) {
channel->napi_dev = efx->net_dev;
+ netif_napi_add(channel->napi_dev, &channel->napi_str,
+ efx_poll, napi_weight);
}
return 0;
}
@@ -1330,6 +1329,8 @@ static void efx_fini_napi(struct efx_nic *efx)
struct efx_channel *channel;
efx_for_each_channel(channel, efx) {
+ if (channel->napi_dev)
+ netif_napi_del(&channel->napi_str);
channel->napi_dev = NULL;
}
}