[PATCH net-next] net: busy-poll: remove LL_FLUSH_FAILED and LL_FLUSH_BUSY

[Eric Dumazet]

From: Eric Dumazet <eduma...@google.com>

Commit 79e7fff47b7b ("net: remove support for per driver
ndo_busy_poll()") made them obsolete.

Signed-off-by: Eric Dumazet <eduma...@google.com>
---
 include/net/busy_poll.h |    4 ----
 net/core/dev.c          |    3 ---
 2 files changed, 7 deletions(-)

diff --git a/include/net/busy_poll.h b/include/net/busy_poll.h
index 
d73b849e29a6869e282103f329c3a02f4e1a6882..b8d637225a07ddd2c0183b75a42cd5c9c5a69851
 100644
--- a/include/net/busy_poll.h
+++ b/include/net/busy_poll.h
@@ -33,10 +33,6 @@ struct napi_struct;
 extern unsigned int sysctl_net_busy_read __read_mostly;
 extern unsigned int sysctl_net_busy_poll __read_mostly;
 
-/* return values from ndo_ll_poll */
-#define LL_FLUSH_FAILED                -1
-#define LL_FLUSH_BUSY          -2
-
 static inline bool net_busy_loop_on(void)
 {
        return sysctl_net_busy_poll;
diff --git a/net/core/dev.c b/net/core/dev.c
index 
0921609dfa81b70a13e0b4ca7852fde6ded7ed82..a6d9b1f071b330c3428c2a0a2d4eb13584911939
 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4998,9 +4998,6 @@ bool sk_busy_loop(struct sock *sk, int nonblock)
                                        LINUX_MIB_BUSYPOLLRXPACKETS, rc);
                local_bh_enable();
 
-               if (rc == LL_FLUSH_FAILED)
-                       break; /* permanent failure */
-
                if (nonblock || !skb_queue_empty(&sk->sk_receive_queue) ||
                    busy_loop_timeout(end_time))
                        break;