* [PATCH net 1/2] ice: Add a per-VF limit on number of FDIR filters
2024-07-23 23:32 [PATCH net 0/2][pull request] Intel Wired LAN Driver Updates 2024-07-23 (ice) Tony Nguyen
@ 2024-07-23 23:32 ` Tony Nguyen
2024-07-23 23:32 ` [PATCH net 2/2] ice: Fix recipe read procedure Tony Nguyen
2024-07-25 8:30 ` [PATCH net 0/2][pull request] Intel Wired LAN Driver Updates 2024-07-23 (ice) patchwork-bot+netdevbpf
2 siblings, 0 replies; 4+ messages in thread
From: Tony Nguyen @ 2024-07-23 23:32 UTC (permalink / raw)
To: davem, kuba, pabeni, edumazet, netdev
Cc: Ahmed Zaki, anthony.l.nguyen, stable, Przemek Kitszel,
Sridhar Samudrala, Wojciech Drewek, Rafal Romanowski
From: Ahmed Zaki <ahmed.zaki@intel.com>
While the iavf driver adds a s/w limit (128) on the number of FDIR
filters that the VF can request, a malicious VF driver can request more
than that and exhaust the resources for other VFs.
Add a similar limit in ice.
CC: stable@vger.kernel.org
Fixes: 1f7ea1cd6a37 ("ice: Enable FDIR Configure for AVF")
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Suggested-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Signed-off-by: Ahmed Zaki <ahmed.zaki@intel.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
---
.../net/ethernet/intel/ice/ice_ethtool_fdir.c | 2 +-
drivers/net/ethernet/intel/ice/ice_fdir.h | 3 +++
.../net/ethernet/intel/ice/ice_virtchnl_fdir.c | 16 ++++++++++++++++
.../net/ethernet/intel/ice/ice_virtchnl_fdir.h | 1 +
4 files changed, 21 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool_fdir.c b/drivers/net/ethernet/intel/ice/ice_ethtool_fdir.c
index e3cab8e98f52..5412eff8ef23 100644
--- a/drivers/net/ethernet/intel/ice/ice_ethtool_fdir.c
+++ b/drivers/net/ethernet/intel/ice/ice_ethtool_fdir.c
@@ -534,7 +534,7 @@ ice_parse_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
*
* Returns the number of available flow director filters to this VSI
*/
-static int ice_fdir_num_avail_fltr(struct ice_hw *hw, struct ice_vsi *vsi)
+int ice_fdir_num_avail_fltr(struct ice_hw *hw, struct ice_vsi *vsi)
{
u16 vsi_num = ice_get_hw_vsi_num(hw, vsi->idx);
u16 num_guar;
diff --git a/drivers/net/ethernet/intel/ice/ice_fdir.h b/drivers/net/ethernet/intel/ice/ice_fdir.h
index 021ecbac7848..ab5b118daa2d 100644
--- a/drivers/net/ethernet/intel/ice/ice_fdir.h
+++ b/drivers/net/ethernet/intel/ice/ice_fdir.h
@@ -207,6 +207,8 @@ struct ice_fdir_base_pkt {
const u8 *tun_pkt;
};
+struct ice_vsi;
+
int ice_alloc_fd_res_cntr(struct ice_hw *hw, u16 *cntr_id);
int ice_free_fd_res_cntr(struct ice_hw *hw, u16 cntr_id);
int ice_alloc_fd_guar_item(struct ice_hw *hw, u16 *cntr_id, u16 num_fltr);
@@ -218,6 +220,7 @@ int
ice_fdir_get_gen_prgm_pkt(struct ice_hw *hw, struct ice_fdir_fltr *input,
u8 *pkt, bool frag, bool tun);
int ice_get_fdir_cnt_all(struct ice_hw *hw);
+int ice_fdir_num_avail_fltr(struct ice_hw *hw, struct ice_vsi *vsi);
bool ice_fdir_is_dup_fltr(struct ice_hw *hw, struct ice_fdir_fltr *input);
bool ice_fdir_has_frag(enum ice_fltr_ptype flow);
struct ice_fdir_fltr *
diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl_fdir.c b/drivers/net/ethernet/intel/ice/ice_virtchnl_fdir.c
index 8e4ff3af86c6..b4feb0927687 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl_fdir.c
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl_fdir.c
@@ -536,6 +536,8 @@ static void ice_vc_fdir_reset_cnt_all(struct ice_vf_fdir *fdir)
fdir->fdir_fltr_cnt[flow][0] = 0;
fdir->fdir_fltr_cnt[flow][1] = 0;
}
+
+ fdir->fdir_fltr_cnt_total = 0;
}
/**
@@ -1560,6 +1562,7 @@ ice_vc_add_fdir_fltr_post(struct ice_vf *vf, struct ice_vf_fdir_ctx *ctx,
resp->status = status;
resp->flow_id = conf->flow_id;
vf->fdir.fdir_fltr_cnt[conf->input.flow_type][is_tun]++;
+ vf->fdir.fdir_fltr_cnt_total++;
ret = ice_vc_send_msg_to_vf(vf, ctx->v_opcode, v_ret,
(u8 *)resp, len);
@@ -1624,6 +1627,7 @@ ice_vc_del_fdir_fltr_post(struct ice_vf *vf, struct ice_vf_fdir_ctx *ctx,
resp->status = status;
ice_vc_fdir_remove_entry(vf, conf, conf->flow_id);
vf->fdir.fdir_fltr_cnt[conf->input.flow_type][is_tun]--;
+ vf->fdir.fdir_fltr_cnt_total--;
ret = ice_vc_send_msg_to_vf(vf, ctx->v_opcode, v_ret,
(u8 *)resp, len);
@@ -1790,6 +1794,7 @@ int ice_vc_add_fdir_fltr(struct ice_vf *vf, u8 *msg)
struct virtchnl_fdir_add *stat = NULL;
struct virtchnl_fdir_fltr_conf *conf;
enum virtchnl_status_code v_ret;
+ struct ice_vsi *vf_vsi;
struct device *dev;
struct ice_pf *pf;
int is_tun = 0;
@@ -1798,6 +1803,17 @@ int ice_vc_add_fdir_fltr(struct ice_vf *vf, u8 *msg)
pf = vf->pf;
dev = ice_pf_to_dev(pf);
+ vf_vsi = ice_get_vf_vsi(vf);
+
+#define ICE_VF_MAX_FDIR_FILTERS 128
+ if (!ice_fdir_num_avail_fltr(&pf->hw, vf_vsi) ||
+ vf->fdir.fdir_fltr_cnt_total >= ICE_VF_MAX_FDIR_FILTERS) {
+ v_ret = VIRTCHNL_STATUS_ERR_PARAM;
+ dev_err(dev, "Max number of FDIR filters for VF %d is reached\n",
+ vf->vf_id);
+ goto err_exit;
+ }
+
ret = ice_vc_fdir_param_check(vf, fltr->vsi_id);
if (ret) {
v_ret = VIRTCHNL_STATUS_ERR_PARAM;
diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl_fdir.h b/drivers/net/ethernet/intel/ice/ice_virtchnl_fdir.h
index c5bcc8d7481c..ac6dcab454b4 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl_fdir.h
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl_fdir.h
@@ -29,6 +29,7 @@ struct ice_vf_fdir_ctx {
struct ice_vf_fdir {
u16 fdir_fltr_cnt[ICE_FLTR_PTYPE_MAX][ICE_FD_HW_SEG_MAX];
int prof_entry_cnt[ICE_FLTR_PTYPE_MAX][ICE_FD_HW_SEG_MAX];
+ u16 fdir_fltr_cnt_total;
struct ice_fd_hw_prof **fdir_prof;
struct idr fdir_rule_idr;
--
2.41.0
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH net 2/2] ice: Fix recipe read procedure
2024-07-23 23:32 [PATCH net 0/2][pull request] Intel Wired LAN Driver Updates 2024-07-23 (ice) Tony Nguyen
2024-07-23 23:32 ` [PATCH net 1/2] ice: Add a per-VF limit on number of FDIR filters Tony Nguyen
@ 2024-07-23 23:32 ` Tony Nguyen
2024-07-25 8:30 ` [PATCH net 0/2][pull request] Intel Wired LAN Driver Updates 2024-07-23 (ice) patchwork-bot+netdevbpf
2 siblings, 0 replies; 4+ messages in thread
From: Tony Nguyen @ 2024-07-23 23:32 UTC (permalink / raw)
To: davem, kuba, pabeni, edumazet, netdev
Cc: Wojciech Drewek, anthony.l.nguyen, Marcin Szycik, Przemek Kitszel,
Simon Horman, Sujai Buvaneswaran
From: Wojciech Drewek <wojciech.drewek@intel.com>
When ice driver reads recipes from firmware information about
need_pass_l2 and allow_pass_l2 flags is not stored correctly.
Those flags are stored as one bit each in ice_sw_recipe structure.
Because of that, the result of checking a flag has to be casted to bool.
Note that the need_pass_l2 flag currently works correctly, because
it's stored in the first bit.
Fixes: bccd9bce29e0 ("ice: Add guard rule when creating FDB in switchdev")
Reviewed-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
---
drivers/net/ethernet/intel/ice/ice_switch.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c
index 3caafcdc301f..fe8847184cb1 100644
--- a/drivers/net/ethernet/intel/ice/ice_switch.c
+++ b/drivers/net/ethernet/intel/ice/ice_switch.c
@@ -2400,10 +2400,10 @@ ice_get_recp_frm_fw(struct ice_hw *hw, struct ice_sw_recipe *recps, u8 rid,
/* Propagate some data to the recipe database */
recps[idx].priority = root_bufs.content.act_ctrl_fwd_priority;
- recps[idx].need_pass_l2 = root_bufs.content.act_ctrl &
- ICE_AQ_RECIPE_ACT_NEED_PASS_L2;
- recps[idx].allow_pass_l2 = root_bufs.content.act_ctrl &
- ICE_AQ_RECIPE_ACT_ALLOW_PASS_L2;
+ recps[idx].need_pass_l2 = !!(root_bufs.content.act_ctrl &
+ ICE_AQ_RECIPE_ACT_NEED_PASS_L2);
+ recps[idx].allow_pass_l2 = !!(root_bufs.content.act_ctrl &
+ ICE_AQ_RECIPE_ACT_ALLOW_PASS_L2);
bitmap_zero(recps[idx].res_idxs, ICE_MAX_FV_WORDS);
if (root_bufs.content.result_indx & ICE_AQ_RECIPE_RESULT_EN) {
set_bit(root_bufs.content.result_indx &
--
2.41.0
^ permalink raw reply related [flat|nested] 4+ messages in thread