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From: Subhra Banerjee <subhrax.banerjee@intel.com>
Date: Fri, 31 Aug 2018 12:01:19 +0530
Subject: [PATCH] UGW_SW-29163: ATM oam support
--- a/drivers/net/ppp/ppp_generic.c
+++ b/drivers/net/ppp/ppp_generic.c
@@ -2952,6 +2952,22 @@ char *ppp_dev_name(struct ppp_channel *c
return name;
}
+/*
+ * Return the PPP device interface pointer
+ */
+struct net_device *ppp_device(struct ppp_channel *chan)
+{
+ struct channel *pch = chan->ppp;
+ struct net_device *dev = NULL;
+
+ if (pch) {
+ read_lock_bh(&pch->upl);
+ if (pch->ppp && pch->ppp->dev)
+ dev = pch->ppp->dev;
+ read_unlock_bh(&pch->upl);
+ }
+ return dev;
+}
/*
* Disconnect a channel from the generic layer.
@@ -3598,6 +3614,7 @@ EXPORT_SYMBOL(ppp_unregister_channel);
EXPORT_SYMBOL(ppp_channel_index);
EXPORT_SYMBOL(ppp_unit_number);
EXPORT_SYMBOL(ppp_dev_name);
+EXPORT_SYMBOL(ppp_device);
EXPORT_SYMBOL(ppp_input);
EXPORT_SYMBOL(ppp_input_error);
EXPORT_SYMBOL(ppp_output_wakeup);
--- a/include/linux/ppp_channel.h
+++ b/include/linux/ppp_channel.h
@@ -74,6 +74,9 @@ extern int ppp_unit_number(struct ppp_ch
/* Get the device name associated with a channel, or NULL if none */
extern char *ppp_dev_name(struct ppp_channel *);
+/* Get the device pointer associated with a channel, or NULL if none */
+extern struct net_device *ppp_device(struct ppp_channel *);
+
/*
* SMP locking notes:
* The channel code must ensure that when it calls ppp_unregister_channel,
--- a/net/atm/Kconfig
+++ b/net/atm/Kconfig
@@ -56,6 +56,12 @@ config ATM_MPOA
subnetwork boundaries. These shortcut connections bypass routers
enhancing overall network performance.
+config ATM_MPOA_INTEL_DSL_PHY_SUPPORT
+ bool "Intel DSL Phy MPOA support"
+ depends on ATM && INET && ATM_MPOA!=n
+ help
+ Add support for Intel DSL Phy ATM MPOA
+
config ATM_BR2684
tristate "RFC1483/2684 Bridged protocols"
depends on ATM && INET
--- a/net/atm/br2684.c
+++ b/net/atm/br2684.c
@@ -596,6 +596,11 @@ static int br2684_regvcc(struct atm_vcc
atmvcc->push = br2684_push;
atmvcc->pop = br2684_pop;
atmvcc->release_cb = br2684_release_cb;
+#if IS_ENABLED(CONFIG_ATM_MPOA_INTEL_DSL_PHY_SUPPORT)
+ if (atm_hook_mpoa_setup) /* IPoA or EoA w/o FCS */
+ atm_hook_mpoa_setup(atmvcc, brdev->payload == p_routed ? 3 : 0,
+ brvcc->encaps == BR2684_ENCAPS_LLC ? 1 : 0, net_dev);
+#endif
atmvcc->owner = THIS_MODULE;
/* initialize netdev carrier state */
--- a/net/atm/common.c
+++ b/net/atm/common.c
@@ -137,6 +137,11 @@ static struct proto vcc_proto = {
.release_cb = vcc_release_cb,
};
+#if IS_ENABLED(CONFIG_ATM_MPOA_INTEL_DSL_PHY_SUPPORT)
+void (*atm_hook_mpoa_setup)(struct atm_vcc *, int, int, struct net_device *) = NULL;
+EXPORT_SYMBOL(atm_hook_mpoa_setup);
+#endif
+
int vcc_create(struct net *net, struct socket *sock, int protocol, int family, int kern)
{
struct sock *sk;
--- a/net/atm/common.h
+++ b/net/atm/common.h
@@ -53,4 +53,6 @@ int svc_change_qos(struct atm_vcc *vcc,s
void atm_dev_release_vccs(struct atm_dev *dev);
+extern void (*atm_hook_mpoa_setup)(struct atm_vcc *, int, int, struct net_device *);
+
#endif
--- a/net/atm/mpc.c
+++ b/net/atm/mpc.c
@@ -31,6 +31,7 @@
/* Modular too */
#include <linux/module.h>
+#include "common.h"
#include "lec.h"
#include "mpc.h"
#include "resources.h"
@@ -645,6 +646,10 @@ static int atm_mpoa_vcc_attach(struct at
vcc->proto_data = mpc->dev;
vcc->push = mpc_push;
+#if IS_ENABLED(CONFIG_ATM_MPOA_INTEL_DSL_PHY_SUPPORT)
+ if (atm_hook_mpoa_setup) /* IPoA, LLC */
+ atm_hook_mpoa_setup(vcc, 3, 1, mpc->dev);
+#endif
return 0;
}
--- a/net/atm/pppoatm.c
+++ b/net/atm/pppoatm.c
@@ -422,6 +422,12 @@ static int pppoatm_assign_vcc(struct atm
atmvcc->user_back = pvcc;
atmvcc->push = pppoatm_push;
atmvcc->pop = pppoatm_pop;
+#if IS_ENABLED(CONFIG_ATM_MPOA_INTEL_DSL_PHY_SUPPORT)
+ if (atm_hook_mpoa_setup) /* PPPoA */
+ atm_hook_mpoa_setup(atmvcc, 2,
+ pvcc->encaps == e_llc ? 1 : 0,
+ ppp_device(&pvcc->chan));
+#endif
atmvcc->release_cb = pppoatm_release_cb;
__module_get(THIS_MODULE);
atmvcc->owner = THIS_MODULE;
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