d/numam-dpdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

app/testpmd: fix hexadecimal parser with odd length

Browse Source 
Current hex string parser assumes input has even characters number.
The parser fails input string with odd length.

The patch parses hex strings with even and odd length.
Parse result of an input with odd length will match result of
even length input, that has `0` as MSB, following by the original
sequence.
For example:
"0x1" results in *dst={0x01, 0x00}, *size=1
"0xabc" results in *dst={0x0a, 0xbc, 0x00}, *size=2

Fixes: 169a9fed1f ("app/testpmd: fix hex string parser support for flow API")
Cc: stable@dpdk.org

Signed-off-by: Gregory Etelson <getelson@nvidia.com>
Reviewed-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
This commit is contained in:
Gregory Etelson 2021-11-24 14:33:54 +02:00 committed by Ferruh Yigit
parent 3f7b90eb80
commit ea1da434c0
1 changed files with 16 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
app/test-pmd/cmdline_flow.c
View File

@ -7702,9 +7702,8 @@ parse_string(struct context *ctx, const struct token *token,
static int
parse_hex_string(const char *src, uint8_t *dst, uint32_t *size)
{
char *c = NULL;
uint32_t i, len;
char tmp[3];
uint32_t left = *size;
const uint8_t *head = dst;
/* Check input parameters */
if ((src == NULL) ||
@ -7714,19 +7713,23 @@ parse_hex_string(const char *src, uint8_t *dst, uint32_t *size)
return -1;
/* Convert chars to bytes */
for (i = 0, len = 0; i < *size; i += 2) {
snprintf(tmp, 3, "%s", src + i);
dst[len++] = strtoul(tmp, &c, 16);
if (*c != 0) {
len--;
dst[len] = 0;
*size = len;
while (left) {
char tmp[3], *end = tmp;
uint32_t read_lim = left & 1 ? 1 : 2;
snprintf(tmp, read_lim + 1, "%s", src);
*dst = strtoul(tmp, &end, 16);
if (*end) {
*dst = 0;
*size = (uint32_t)(dst - head);
return -1;
}
left -= read_lim;
src += read_lim;
dst++;
}
dst[len] = 0;
*size = len;
*dst = 0;
*size = (uint32_t)(dst - head);
return 0;
}