kernel: remove linux 4.0 support

[openwrt/staging/chunkeey.git] / target / linux / generic / patches-4.0 / 073-pppoe-Use-workqueue-to-die-properly-when-a-PADT-is-r.patch

diff --git a/target/linux/generic/patches-4.0/073-pppoe-Use-workqueue-to-die-properly-when-a-PADT-is-r.patch b/target/linux/generic/patches-4.0/073-pppoe-Use-workqueue-to-die-properly-when-a-PADT-is-r.patch
deleted file mode 100644 (file)
index de85830..0000000
--- a/target/linux/generic/patches-4.0/073-pppoe-Use-workqueue-to-die-properly-when-a-PADT-is-r.patch
+++ /dev/null
@@ -1,89 +0,0 @@
-From: Simon Farnsworth <simon@farnz.org.uk>
-Date: Sun, 1 Mar 2015 10:54:39 +0000
-Subject: [PATCH] pppoe: Use workqueue to die properly when a PADT is received
-
-When a PADT frame is received, the socket may not be in a good state to
-close down the PPP interface. The current implementation handles this by
-simply blocking all further PPP traffic, and hoping that the lack of traffic
-will trigger the user to investigate.
-
-Use schedule_work to get to a process context from which we clear down the
-PPP interface, in a fashion analogous to hangup on a TTY-based PPP
-interface. This causes pppd to disconnect immediately, and allows tools to
-take immediate corrective action.
-
-Note that pppd's rp_pppoe.so plugin has code in it to disable the session
-when it disconnects; however, as a consequence of this patch, the session is
-already disabled before rp_pppoe.so is asked to disable the session. The
-result is a harmless error message:
-
-Failed to disconnect PPPoE socket: 114 Operation already in progress
-
-This message is safe to ignore, as long as the error is 114 Operation
-already in progress; in that specific case, it means that the PPPoE session
-has already been disabled before pppd tried to disable it.
-
-Signed-off-by: Simon Farnsworth <simon@farnz.org.uk>
-Tested-by: Dan Williams <dcbw@redhat.com>
-Tested-by: Christoph Schulz <develop@kristov.de>
-Signed-off-by: David S. Miller <davem@davemloft.net>
----
-
---- a/drivers/net/ppp/pppoe.c
-+++ b/drivers/net/ppp/pppoe.c
-@@ -455,6 +455,18 @@ out:
-       return NET_RX_DROP;
- }
- 
-+static void pppoe_unbind_sock_work(struct work_struct *work)
-+{
-+      struct pppox_sock *po = container_of(work, struct pppox_sock,
-+                                           proto.pppoe.padt_work);
-+      struct sock *sk = sk_pppox(po);
-+
-+      lock_sock(sk);
-+      pppox_unbind_sock(sk);
-+      release_sock(sk);
-+      sock_put(sk);
-+}
-+
- /************************************************************************
-  *
-  * Receive a PPPoE Discovery frame.
-@@ -500,7 +512,8 @@ static int pppoe_disc_rcv(struct sk_buff
-               }
- 
-               bh_unlock_sock(sk);
--              sock_put(sk);
-+              if (!schedule_work(&po->proto.pppoe.padt_work))
-+                      sock_put(sk);
-       }
- 
- abort:
-@@ -613,6 +626,8 @@ static int pppoe_connect(struct socket *
- 
-       lock_sock(sk);
- 
-+      INIT_WORK(&po->proto.pppoe.padt_work, pppoe_unbind_sock_work);
-+
-       error = -EINVAL;
-       if (sp->sa_protocol != PX_PROTO_OE)
-               goto end;
---- a/include/linux/if_pppox.h
-+++ b/include/linux/if_pppox.h
-@@ -19,6 +19,7 @@
- #include <linux/netdevice.h>
- #include <linux/ppp_channel.h>
- #include <linux/skbuff.h>
-+#include <linux/workqueue.h>
- #include <uapi/linux/if_pppox.h>
- 
- static inline struct pppoe_hdr *pppoe_hdr(const struct sk_buff *skb)
-@@ -32,6 +33,7 @@ struct pppoe_opt {
-       struct pppoe_addr       pa;       /* what this socket is bound to*/
-       struct sockaddr_pppox   relay;    /* what socket data will be
-                                            relayed to (PPPoE relaying) */
-+      struct work_struct      padt_work;/* Work item for handling PADT */
- };
- 
- struct pptp_opt {