evie/android_kernel_oneplus_msm8998
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msm: ipa: Add guard around nat entries read

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Add mutext lock protection around nat read
functino in debugfs to avoid nat table delete
during read.

Change-Id: Id38737dad70853ccd83685841d0c2498ee722ff2
CRs-Fixed: 1075605
Signed-off-by: Sunil Paidimarri <hisunil@codeaurora.org>
This commit is contained in:
Sunil Paidimarri 2016-10-07 14:32:54 -07:00
parent 3c7400dc73
commit 38b227b0c2
2 changed files with 4 additions and 0 deletions
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2
drivers/platform/msm/ipa/ipa_v2/ipa_debugfs.c
View file

@ -1420,6 +1420,7 @@ static ssize_t ipa_read_nat4(struct file *file,
u16 enable, tbl_entry, flag; u16 enable, tbl_entry, flag;
u32 no_entrys = 0; u32 no_entrys = 0;
mutex_lock(&ipa_ctx->nat_mem.lock);
value = ipa_ctx->nat_mem.public_ip_addr; value = ipa_ctx->nat_mem.public_ip_addr;
pr_err( pr_err(
"Table IP Address:%d.%d.%d.%d\n", "Table IP Address:%d.%d.%d.%d\n",
@ -1573,6 +1574,7 @@ static ssize_t ipa_read_nat4(struct file *file,
} }
} }
pr_err("Current No. Nat Entries: %d\n", no_entrys); pr_err("Current No. Nat Entries: %d\n", no_entrys);
mutex_unlock(&ipa_ctx->nat_mem.lock);
return 0; return 0;
} }

2
drivers/platform/msm/ipa/ipa_v3/ipa_debugfs.c
View file

@ -1478,6 +1478,7 @@ static ssize_t ipa3_read_nat4(struct file *file,
u16 enable, tbl_entry, flag; u16 enable, tbl_entry, flag;
u32 no_entrys = 0; u32 no_entrys = 0;
mutex_lock(&ipa3_ctx->nat_mem.lock);
value = ipa3_ctx->nat_mem.public_ip_addr; value = ipa3_ctx->nat_mem.public_ip_addr;
pr_err( pr_err(
"Table IP Address:%d.%d.%d.%d\n", "Table IP Address:%d.%d.%d.%d\n",
@ -1631,6 +1632,7 @@ static ssize_t ipa3_read_nat4(struct file *file,
} }
} }
pr_err("Current No. Nat Entries: %d\n", no_entrys); pr_err("Current No. Nat Entries: %d\n", no_entrys);
mutex_unlock(&ipa3_ctx->nat_mem.lock);
return 0; return 0;
} }