path: root/net/core/netpoll.c
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authorJakub Kicinski <kuba@kernel.org>2020-09-09 10:37:52 -0700
committerDavid S. Miller <davem@davemloft.net>2020-09-10 13:08:46 -0700
commit4d092dd2041a5f328410ad16d63b8606c24e8604 (patch)
tree453786a03afc9e7c8cfa8cf37af80ee023fb50d0 /net/core/netpoll.c
parentnet: remove napi_hash_del() from driver-facing API (diff)
net: manage napi add/del idempotence explicitly
To RCUify napi->dev_list we need to replace list_del_init() with list_del_rcu(). There is no _init() version for RCU for obvious reasons. Up until now netif_napi_del() was idempotent so to make sure it remains such add a bit which is set when NAPI is listed, and cleared when it removed. Since we don't expect multiple calls to netif_napi_add() to be correct, add a warning on that side. Now that napi_hash_add / napi_hash_del are only called by napi_add / del we can actually steal its bit. We just need to make sure hash node is initialized correctly. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/netpoll.c')
0 files changed, 0 insertions, 0 deletions