patch 'net/ice: fix raw flow input pattern parsing' has been queued to stable release 21.11.2

[Kevin Traynor <ktraynor@redhat.com>]

Hi,

FYI, your patch has been queued to stable release 21.11.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 05/15/22. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/kevintraynor/dpdk-stable

This queued commit can be viewed at:
https://github.com/kevintraynor/dpdk-stable/commit/21edf23c6d7a93fb6ca6a4e2eceb8cc3025fb291

Thanks.

Kevin

---
From 21edf23c6d7a93fb6ca6a4e2eceb8cc3025fb291 Mon Sep 17 00:00:00 2001
From: Ting Xu <ting.xu@intel.com>
Date: Mon, 18 Apr 2022 14:59:08 +0800
Subject: [PATCH] net/ice: fix raw flow input pattern parsing

[ upstream commit 848de9572c83142e989394a699064d728eb892c3 ]

When parsing raw flow pattern in FDIR, the input parameter spec and
mask are used directly and the original value will be changed. It
will cause error if these values are used in other functions. In this
patch, temporary variables are created to store the spec and mask.

Fixes: 25be39cc1760 ("net/ice: enable protocol agnostic flow offloading in FDIR")

Signed-off-by: Ting Xu <ting.xu@intel.com>
Acked-by: Junfeng Guo <junfeng.guo@intel.com>
---
 drivers/net/ice/ice_fdir_filter.c | 25 +++++++++++++++++++------
 1 file changed, 19 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ice/ice_fdir_filter.c b/drivers/net/ice/ice_fdir_filter.c
index 99053978a9..72c8bd8f02 100644
--- a/drivers/net/ice/ice_fdir_filter.c
+++ b/drivers/net/ice/ice_fdir_filter.c
@@ -1873,8 +1873,9 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,
 
 			/* convert raw spec & mask from byte string to int */
-			unsigned char *tmp_spec =
+			unsigned char *spec_pattern =
 				(uint8_t *)(uintptr_t)raw_spec->pattern;
-			unsigned char *tmp_mask =
+			unsigned char *mask_pattern =
 				(uint8_t *)(uintptr_t)raw_mask->pattern;
+			uint8_t *tmp_spec, *tmp_mask;
 			uint16_t tmp_val = 0;
 			uint8_t pkt_len = 0;
@@ -1887,6 +1888,16 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,
 				return -rte_errno;
 
+			tmp_spec = rte_zmalloc(NULL, pkt_len / 2, 0);
+			if (!tmp_spec)
+				return -rte_errno;
+
+			tmp_mask = rte_zmalloc(NULL, pkt_len / 2, 0);
+			if (!tmp_mask) {
+				rte_free(tmp_spec);
+				return -rte_errno;
+			}
+
 			for (i = 0, j = 0; i < pkt_len; i += 2, j++) {
-				tmp = tmp_spec[i];
+				tmp = spec_pattern[i];
 				if (tmp >= 'a' && tmp <= 'f')
 					tmp_val = tmp - 'a' + 10;
@@ -1897,5 +1908,5 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,
 
 				tmp_val *= 16;
-				tmp = tmp_spec[i + 1];
+				tmp = spec_pattern[i + 1];
 				if (tmp >= 'a' && tmp <= 'f')
 					tmp_spec[j] = tmp_val + tmp - 'a' + 10;
@@ -1905,5 +1916,5 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,
 					tmp_spec[j] = tmp_val + tmp - '0';
 
-				tmp = tmp_mask[i];
+				tmp = mask_pattern[i];
 				if (tmp >= 'a' && tmp <= 'f')
 					tmp_val = tmp - 'a' + 10;
@@ -1914,5 +1925,5 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,
 
 				tmp_val *= 16;
-				tmp = tmp_mask[i + 1];
+				tmp = mask_pattern[i + 1];
 				if (tmp >= 'a' && tmp <= 'f')
 					tmp_mask[j] = tmp_val + tmp - 'a' + 10;
@@ -1950,4 +1961,6 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,
 			filter->parser_ena = true;
 
+			rte_free(tmp_spec);
+			rte_free(tmp_mask);
 			break;
 		}
-- 
2.34.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2022-05-10 13:24:21.822050019 +0100
+++ 0009-net-ice-fix-raw-flow-input-pattern-parsing.patch	2022-05-10 13:24:21.571646318 +0100
@@ -1 +1 @@
-From 848de9572c83142e989394a699064d728eb892c3 Mon Sep 17 00:00:00 2001
+From 21edf23c6d7a93fb6ca6a4e2eceb8cc3025fb291 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 848de9572c83142e989394a699064d728eb892c3 ]
+
@@ -12 +13,0 @@
-Cc: stable@dpdk.org
@@ -21 +22 @@
-index 0982478feb..7914ba9407 100644
+index 99053978a9..72c8bd8f02 100644
@@ -24 +25 @@
-@@ -1871,8 +1871,9 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,
+@@ -1873,8 +1873,9 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,
@@ -36 +37 @@
-@@ -1885,6 +1886,16 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,
+@@ -1887,6 +1888,16 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,
@@ -54 +55 @@
-@@ -1895,5 +1906,5 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,
+@@ -1897,5 +1908,5 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,
@@ -61 +62 @@
-@@ -1903,5 +1914,5 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,
+@@ -1905,5 +1916,5 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,
@@ -68 +69 @@
-@@ -1912,5 +1923,5 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,
+@@ -1914,5 +1925,5 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,
@@ -75 +76 @@
-@@ -1948,4 +1959,6 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,
+@@ -1950,4 +1961,6 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,