| Ting Xu | 4ba3c0a | 2022-05-05 09:12:50 +0000 | [diff] [blame^] | 1 | From 794d99b8abeeb401a374489a9e3c629d023c271f Mon Sep 17 00:00:00 2001 |
| 2 | From: Ting Xu <ting.xu@intel.com> |
| 3 | Date: Fri, 4 Mar 2022 07:26:28 +0000 |
| 4 | Subject: [PATCH v2] net/ice: fix raw flow input pattern value change in FDIR |
| 5 | |
| 6 | When parsing raw flow pattern in FDIR, the input parameter spec and |
| 7 | mask are used directly and the original value will be changed. It |
| 8 | will cause error if these values are used in other functions. In this |
| 9 | patch, temporary variables are created to store the spec and mask. |
| 10 | |
| 11 | Fixes: 25be39cc1760 ("net/ice: enable protocol agnostic flow offloading in FDIR") |
| 12 | |
| 13 | Cc: stable@dpdk.org |
| 14 | |
| 15 | Signed-off-by: Ting Xu <ting.xu@intel.com> |
| 16 | --- |
| 17 | drivers/net/ice/ice_fdir_filter.c | 25 +++++++++++++++++++------ |
| 18 | 1 file changed, 19 insertions(+), 6 deletions(-) |
| 19 | |
| 20 | diff --git a/drivers/net/ice/ice_fdir_filter.c b/drivers/net/ice/ice_fdir_filter.c |
| 21 | index 7954c6d8ea..5ff1afac90 100644 |
| 22 | --- a/drivers/net/ice/ice_fdir_filter.c |
| 23 | +++ b/drivers/net/ice/ice_fdir_filter.c |
| 24 | @@ -1868,10 +1868,11 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad, |
| 25 | break; |
| 26 | |
| 27 | /* convert raw spec & mask from byte string to int */ |
| 28 | - unsigned char *tmp_spec = |
| 29 | + unsigned char *spec_pattern = |
| 30 | (uint8_t *)(uintptr_t)raw_spec->pattern; |
| 31 | - unsigned char *tmp_mask = |
| 32 | + unsigned char *mask_pattern = |
| 33 | (uint8_t *)(uintptr_t)raw_mask->pattern; |
| 34 | + uint8_t *tmp_spec, *tmp_mask; |
| 35 | uint16_t udp_port = 0; |
| 36 | uint16_t tmp_val = 0; |
| 37 | uint8_t pkt_len = 0; |
| 38 | @@ -1883,8 +1884,18 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad, |
| 39 | pkt_len) |
| 40 | return -rte_errno; |
| 41 | |
| 42 | + tmp_spec = rte_zmalloc(NULL, pkt_len / 2, 0); |
| 43 | + if (!tmp_spec) |
| 44 | + return -rte_errno; |
| 45 | + |
| 46 | + tmp_mask = rte_zmalloc(NULL, pkt_len / 2, 0); |
| 47 | + if (!tmp_mask) { |
| 48 | + rte_free(tmp_spec); |
| 49 | + return -rte_errno; |
| 50 | + } |
| 51 | + |
| 52 | for (i = 0, j = 0; i < pkt_len; i += 2, j++) { |
| 53 | - tmp = tmp_spec[i]; |
| 54 | + tmp = spec_pattern[i]; |
| 55 | if (tmp >= 'a' && tmp <= 'f') |
| 56 | tmp_val = tmp - 'a' + 10; |
| 57 | if (tmp >= 'A' && tmp <= 'F') |
| 58 | @@ -1893,7 +1904,7 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad, |
| 59 | tmp_val = tmp - '0'; |
| 60 | |
| 61 | tmp_val *= 16; |
| 62 | - tmp = tmp_spec[i + 1]; |
| 63 | + tmp = spec_pattern[i + 1]; |
| 64 | if (tmp >= 'a' && tmp <= 'f') |
| 65 | tmp_spec[j] = tmp_val + tmp - 'a' + 10; |
| 66 | if (tmp >= 'A' && tmp <= 'F') |
| 67 | @@ -1901,7 +1912,7 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad, |
| 68 | if (tmp >= '0' && tmp <= '9') |
| 69 | tmp_spec[j] = tmp_val + tmp - '0'; |
| 70 | |
| 71 | - tmp = tmp_mask[i]; |
| 72 | + tmp = mask_pattern[i]; |
| 73 | if (tmp >= 'a' && tmp <= 'f') |
| 74 | tmp_val = tmp - 'a' + 10; |
| 75 | if (tmp >= 'A' && tmp <= 'F') |
| 76 | @@ -1910,7 +1921,7 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad, |
| 77 | tmp_val = tmp - '0'; |
| 78 | |
| 79 | tmp_val *= 16; |
| 80 | - tmp = tmp_mask[i + 1]; |
| 81 | + tmp = mask_pattern[i + 1]; |
| 82 | if (tmp >= 'a' && tmp <= 'f') |
| 83 | tmp_mask[j] = tmp_val + tmp - 'a' + 10; |
| 84 | if (tmp >= 'A' && tmp <= 'F') |
| 85 | @@ -1953,6 +1964,8 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad, |
| 86 | |
| 87 | filter->parser_ena = true; |
| 88 | |
| 89 | + rte_free(tmp_spec); |
| 90 | + rte_free(tmp_mask); |
| 91 | break; |
| 92 | } |
| 93 | |
| 94 | -- |
| 95 | 2.17.1 |
| 96 | |