From: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
To: dev@dpdk.org, Adrien Mazarguil <adrien.mazarguil@6wind.com>,
Yongseok Koh <yskoh@mellanox.com>
Cc: stable@dpdk.org
Subject: [dpdk-stable] [PATCH] net/mlx5: fix: flow validation
Date: Wed, 2 May 2018 16:42:57 +0200 [thread overview]
Message-ID: <efb6008e678ae09f6e899479296e8d1156d409e3.1525272061.git.nelio.laranjeiro@6wind.com> (raw)
Item spec and last are wrongly compared to the NIC capability causing a
validation failure when the mask is null.
This validation function should only verify the user is not configuring
unsupported matching fields.
Fixes: 2097d0d1e2cc ("net/mlx5: support basic flow items and actions")
Cc: stable@dpdk.org
Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
---
drivers/net/mlx5/mlx5_flow.c | 73 +++++++++++-------------------------
1 file changed, 22 insertions(+), 51 deletions(-)
diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index 129311d50..5d4995783 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -555,60 +555,31 @@ static int
mlx5_flow_item_validate(const struct rte_flow_item *item,
const uint8_t *mask, unsigned int size)
{
- if (!item->spec && (item->mask || item->last)) {
- rte_errno = EINVAL;
- return -rte_errno;
- }
- if (item->spec && !item->mask) {
- unsigned int i;
- const uint8_t *spec = item->spec;
-
- for (i = 0; i < size; ++i)
- if ((spec[i] | mask[i]) != mask[i]) {
- rte_errno = EINVAL;
- return -rte_errno;
- }
- }
- if (item->last && !item->mask) {
- unsigned int i;
- const uint8_t *spec = item->last;
-
- for (i = 0; i < size; ++i)
- if ((spec[i] | mask[i]) != mask[i]) {
- rte_errno = EINVAL;
- return -rte_errno;
- }
- }
- if (item->mask) {
- unsigned int i;
- const uint8_t *spec = item->spec;
-
- for (i = 0; i < size; ++i)
- if ((spec[i] | mask[i]) != mask[i]) {
- rte_errno = EINVAL;
- return -rte_errno;
- }
- }
- if (item->spec && item->last) {
- uint8_t spec[size];
- uint8_t last[size];
- const uint8_t *apply = mask;
- unsigned int i;
- int ret;
+ unsigned int i;
+ const uint8_t *spec = item->spec;
+ const uint8_t *last = item->last;
+ const uint8_t *m = item->mask ? item->mask : mask;
- if (item->mask)
- apply = item->mask;
- for (i = 0; i < size; ++i) {
- spec[i] = ((const uint8_t *)item->spec)[i] & apply[i];
- last[i] = ((const uint8_t *)item->last)[i] & apply[i];
- }
- ret = memcmp(spec, last, size);
- if (ret != 0) {
- rte_errno = EINVAL;
- return -rte_errno;
- }
+ if (!spec && (item->mask || last))
+ goto error;
+ if (!spec)
+ return 0;
+ for (i = 0; i < size; i++) {
+ if (spec)
+ if (((spec[i] & m[i]) | mask[i]) != mask[i])
+ goto error;
+ if (last)
+ if ((((last[i] & m[i]) | mask[i]) != mask[i]) ||
+ ((spec[i] & m[i]) != (last[i] & m[i])))
+ goto error;
+ if (m)
+ if ((m[i] | mask[i]) != mask[i])
+ goto error;
}
return 0;
+error:
+ rte_errno = ENOTSUP;
+ return -rte_errno;
}
/**
--
2.17.0
next reply other threads:[~2018-05-02 14:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-02 14:42 Nelio Laranjeiro [this message]
2018-05-03 7:07 ` Shahaf Shuler
2018-05-03 9:23 ` Nélio Laranjeiro
2018-05-03 9:31 ` [dpdk-stable] [PATCH v2] net/mlx5: fix " Nelio Laranjeiro
2018-05-03 10:40 ` Shahaf Shuler
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