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ipa3:msm: Added debugfs support for drop packet stats

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enabled the debug support for drop packets on the basis of
pipe number.

Change-Id: Ia1811dd7a5b28bfc787ed7e28e661dfac3e41a17
Signed-off-by: Rishabh Garg <rishgarg@codeaurora.org>
This commit is contained in:
Rishabh Garg
2020-05-18 23:48:12 +05:30
committed by Gerrit - the friendly Code Review server
parent b93346f3ba
commit d5c81c5204
1 changed files with 86 additions and 0 deletions
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86
drivers/platform/msm/ipa/ipa_v3/ipa_hw_stats.c
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@@ -2235,6 +2235,81 @@ static ssize_t ipa_debugfs_print_drop_stats(struct file *file,
return simple_read_from_buffer(ubuf, count, ppos, dbg_buff, nbytes);
}
static ssize_t ipa_debugfs_enable_disable_drop_stats(struct file *file,
const char __user *ubuf, size_t count, loff_t *ppos)
{
unsigned long missing;
unsigned int pipe_num = 0;
bool enable_pipe = true;
u32 pipe_bitmask = ipa3_ctx->hw_stats.drop.init.enabled_bitmask;
char seprator = ',';
int i, j;
bool is_pipe = false;
ssize_t ret;
mutex_lock(&ipa3_ctx->lock);
if (sizeof(dbg_buff) < count + 1) {
ret = -EFAULT;
goto bail;
}
missing = copy_from_user(dbg_buff, ubuf, count);
if (missing) {
ret = -EFAULT;
goto bail;
}
dbg_buff[count] = '\0';
IPADBG("data is %s", dbg_buff);
i = 0;
while (dbg_buff[i] != ' ' && i < count)
i++;
j = i;
i++;
if (i < count) {
if (dbg_buff[i] == '0') {
enable_pipe = false;
IPADBG("Drop stats will be disabled for pipes:");
}
}
for (i = 0; i < j; i++) {
if (dbg_buff[i] >= '0' && dbg_buff[i] <= '9') {
pipe_num = (pipe_num * 10) + (dbg_buff[i] - '0');
is_pipe = true;
}
if (dbg_buff[i] == seprator) {
if (pipe_num >= 0 && pipe_num < ipa3_ctx->ipa_num_pipes
&& ipa3_get_client_by_pipe(pipe_num) <
IPA_CLIENT_MAX) {
IPADBG("pipe number %u\n", pipe_num);
if (enable_pipe)
pipe_bitmask = pipe_bitmask |
(1 << pipe_num);
else
pipe_bitmask = pipe_bitmask &
(~(1 << pipe_num));
}
pipe_num = 0;
is_pipe = false;
}
}
if (is_pipe && pipe_num >= 0 && pipe_num < ipa3_ctx->ipa_num_pipes &&
ipa3_get_client_by_pipe(pipe_num) < IPA_CLIENT_MAX) {
IPADBG("pipe number %u\n", pipe_num);
if (enable_pipe)
pipe_bitmask = pipe_bitmask | (1 << pipe_num);
else
pipe_bitmask = pipe_bitmask & (~(1 << pipe_num));
}
ipa_init_drop_stats(pipe_bitmask);
ret = count;
bail:
mutex_unlock(&ipa3_ctx->lock);
return ret;
}
static const struct file_operations ipa3_quota_ops = {
.read = ipa_debugfs_print_quota_stats,
.write = ipa_debugfs_reset_quota_stats,
@@ -2255,10 +2330,14 @@ static const struct file_operations ipa3_drop_ops = {
.write = ipa_debugfs_reset_drop_stats,
};
static const struct file_operations ipa3_enable_drop_ops = {
.write = ipa_debugfs_enable_disable_drop_stats,
};
int ipa_debugfs_init_stats(struct dentry *parent)
{
const mode_t read_write_mode = 0664;
const mode_t write_mode = 0220;
struct dentry *file;
struct dentry *dent;
@@ -2285,6 +2364,13 @@ int ipa_debugfs_init_stats(struct dentry *parent)
goto fail;
}
file = debugfs_create_file("enable_drop_stats", write_mode, dent, NULL,
&ipa3_enable_drop_ops);
if (IS_ERR_OR_NULL(file)) {
IPAERR("fail to create file %s\n", "enable_drop_stats");
goto fail;
}
file = debugfs_create_file("tethering", read_write_mode, dent, NULL,
&ipa3_tethering_ops);
if (IS_ERR_OR_NULL(file)) {