evie/android_kernel_oneplus_msm8998
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msm: ipa3: send usb-connect from rndis-ipa

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To resolve the timing issue between usb-driver
and android framework, made the change on rndis
ipa to send the usb-connect msg when usb-driver
connect the IPA pipes.

Change-Id: I51de37bc7610cb0a94659c64146f10ed322210b2
Acked-by: Pooja Kumari <kumarip@qti.qualcomm.com>
Signed-off-by: Mohammed Javid <mjavid@codeaurora.org>
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>
This commit is contained in:
Skylar Chang 2018-08-21 10:33:55 -07:00 • committed by Gerrit - the friendly Code Review server
parent b9806258a2
commit ef9aa79b43
1 changed files with 47 additions and 1 deletions
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48
drivers/net/ethernet/msm/rndis_ipa.c
View file

@ -1,4 +1,4 @@
/* Copyright (c) 2013-2017, The Linux Foundation. All rights reserved.
/* Copyright (c) 2013-2018, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@ -449,6 +449,11 @@ struct rndis_pkt_hdr rndis_template_hdr = {
.zeroes = {0},
};
static void rndis_ipa_msg_free_cb(void *buff, u32 len, u32 type)
{
kfree(buff);
}
/**
* rndis_ipa_init() - create network device and initialize internal
* data structures
@ -648,6 +653,8 @@ int rndis_ipa_pipe_connect_notify(u32 usb_to_ipa_hdl,
int next_state;
int result;
unsigned long flags;
struct ipa_ecm_msg *rndis_msg;
struct ipa_msg_meta msg_meta;
RNDIS_IPA_LOG_ENTRY();
@ -718,6 +725,26 @@ int rndis_ipa_pipe_connect_notify(u32 usb_to_ipa_hdl,
}
RNDIS_IPA_DEBUG("netif_carrier_on() was called\n");
rndis_msg = kzalloc(sizeof(*rndis_msg), GFP_KERNEL);
if (!rndis_msg) {
result = -ENOMEM;
goto fail;
}
memset(&msg_meta, 0, sizeof(struct ipa_msg_meta));
msg_meta.msg_type = ECM_CONNECT;
msg_meta.msg_len = sizeof(struct ipa_ecm_msg);
strlcpy(rndis_msg->name, rndis_ipa_ctx->net->name,
IPA_RESOURCE_NAME_MAX);
rndis_msg->ifindex = rndis_ipa_ctx->net->ifindex;
result = ipa_send_msg(&msg_meta, rndis_msg, rndis_ipa_msg_free_cb);
if (result) {
RNDIS_IPA_ERROR("fail to send ECM_CONNECT for rndis\n");
kfree(rndis_msg);
goto fail;
}
spin_lock_irqsave(&rndis_ipa_ctx->state_lock, flags);
next_state = rndis_ipa_next_state(rndis_ipa_ctx->state,
RNDIS_IPA_CONNECT);
@ -1165,6 +1192,8 @@ int rndis_ipa_pipe_disconnect_notify(void *private)
int outstanding_dropped_pkts;
int retval;
unsigned long flags;
struct ipa_ecm_msg *rndis_msg;
struct ipa_msg_meta msg_meta;
RNDIS_IPA_LOG_ENTRY();
@ -1192,6 +1221,23 @@ int rndis_ipa_pipe_disconnect_notify(void *private)
netif_carrier_off(rndis_ipa_ctx->net);
RNDIS_IPA_DEBUG("carrier_off notification was sent\n");
rndis_msg = kzalloc(sizeof(*rndis_msg), GFP_KERNEL);
if (!rndis_msg)
return -ENOMEM;
memset(&msg_meta, 0, sizeof(struct ipa_msg_meta));
msg_meta.msg_type = ECM_DISCONNECT;
msg_meta.msg_len = sizeof(struct ipa_ecm_msg);
strlcpy(rndis_msg->name, rndis_ipa_ctx->net->name,
IPA_RESOURCE_NAME_MAX);
rndis_msg->ifindex = rndis_ipa_ctx->net->ifindex;
retval = ipa_send_msg(&msg_meta, rndis_msg, rndis_ipa_msg_free_cb);
if (retval) {
RNDIS_IPA_ERROR("fail to send ECM_DISCONNECT for rndis\n");
kfree(rndis_msg);
return -EPERM;
}
netif_stop_queue(rndis_ipa_ctx->net);
RNDIS_IPA_DEBUG("queue stopped\n");