From 848de9572c83142e989394a699064d728eb892c3 Mon Sep 17 00:00:00 2001 From: Ting Xu Date: Mon, 18 Apr 2022 14:59:08 +0800 Subject: [PATCH] net/ice: fix raw flow input pattern parsing 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") Cc: stable@dpdk.org Signed-off-by: Ting Xu Acked-by: Junfeng Guo --- 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 0982478feb..7914ba9407 100644 --- a/drivers/net/ice/ice_fdir_filter.c +++ b/drivers/net/ice/ice_fdir_filter.c @@ -1870,10 +1870,11 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad, break; /* 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; uint8_t tmp = 0; @@ -1884,8 +1885,18 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad, pkt_len) 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; if (tmp >= 'A' && tmp <= 'F') @@ -1894,7 +1905,7 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad, tmp_val = tmp - '0'; 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; if (tmp >= 'A' && tmp <= 'F') @@ -1902,7 +1913,7 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad, if (tmp >= '0' && tmp <= '9') 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; if (tmp >= 'A' && tmp <= 'F') @@ -1911,7 +1922,7 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad, tmp_val = tmp - '0'; 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; if (tmp >= 'A' && tmp <= 'F') @@ -1947,6 +1958,8 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad, filter->parser_ena = true; + rte_free(tmp_spec); + rte_free(tmp_mask); break; } -- 2.39.5