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From db11067fb37cc3a77cc70fb9233a454102c4854c Mon Sep 17 00:00:00 2001
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From: Andrea Claudi <aclaudi@redhat.com>
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Date: Mon, 29 Apr 2019 20:05:38 +0200
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Subject: [PATCH] iproute_lwtunnel: csum_mode value checking was ineffective
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1465646
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Upstream Status: iproute2.git commit 08806fb0191e9
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Conflicts: adjust rta_addattr8() call to handle return value
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commit 08806fb0191e9ee8769507dc93b722fd021feb34
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Author: Phil Sutter <phil@nwl.cc>
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Date: Thu Aug 17 19:09:30 2017 +0200
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iproute_lwtunnel: csum_mode value checking was ineffective
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ila_csum_name2mode() returning -1 on error but being declared as
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returning __u8 doesn't make much sense. Change the code to correctly
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detect this issue. Checking for __u8 overruns shouldn't be necessary
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though since ila_csum_name2mode() return values are well-defined.
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Signed-off-by: Phil Sutter <phil@nwl.cc>
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---
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ip/iproute_lwtunnel.c | 8 ++++----
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1 file changed, 4 insertions(+), 4 deletions(-)
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diff --git a/ip/iproute_lwtunnel.c b/ip/iproute_lwtunnel.c
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index 92ea2c87787ec..5da3a1b488cbd 100644
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--- a/ip/iproute_lwtunnel.c
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+++ b/ip/iproute_lwtunnel.c
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@@ -125,7 +125,7 @@ static char *ila_csum_mode2name(__u8 csum_mode)
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}
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}
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-static __u8 ila_csum_name2mode(char *name)
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+static int ila_csum_name2mode(char *name)
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{
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if (strcmp(name, "adj-transport") == 0)
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return ILA_CSUM_ADJUST_TRANSPORT;
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@@ -348,7 +348,7 @@ static int parse_encap_ila(struct rtattr *rta, size_t len,
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while (argc > 0) {
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if (strcmp(*argv, "csum-mode") == 0) {
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- __u8 csum_mode;
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+ int csum_mode;
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NEXT_ARG();
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@@ -357,8 +357,8 @@ static int parse_encap_ila(struct rtattr *rta, size_t len,
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invarg("\"csum-mode\" value is invalid\n",
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*argv);
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- ret = rta_addattr8(rta, len, ILA_ATTR_CSUM_MODE,
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- (__u8)csum_mode);
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+ ret = rta_addattr8(rta, 1024, ILA_ATTR_CSUM_MODE,
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+ (__u8)csum_mode);
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argc--; argv++;
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} else {
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--
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2.20.1
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