* [dpdk-dev] [PATCH v2] net/ice: fix FDIR flow type conflict
@ 2019-11-16 8:59 Qi Zhang
0 siblings, 0 replies; only message in thread
From: Qi Zhang @ 2019-11-16 8:59 UTC (permalink / raw)
To: beilei.xing, yahui.cao; +Cc: dev, Qi Zhang
Flow type "IPv4 + UDP" or "IPv4 + TCP" is conflict with "IPv4 + any"
flow type. If a rule for IPv4 + any is created, we should reject any rule
for IPv4 + UDP otherwise the first rule may be impacted, same decision
should be made on a reverse order.
For IPv6 and IPv4 GTPU inner case, we have the same limitation.
Fixes: 109e8e06249e ("net/ice: configure HW flow director rule")
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
---
v2:
- fix check patch issue.
drivers/net/ice/ice_fdir_filter.c | 172 ++++++++++++++++++++++++++++++++++----
1 file changed, 156 insertions(+), 16 deletions(-)
diff --git a/drivers/net/ice/ice_fdir_filter.c b/drivers/net/ice/ice_fdir_filter.c
index 7876f4bbc..cc1d6d010 100644
--- a/drivers/net/ice/ice_fdir_filter.c
+++ b/drivers/net/ice/ice_fdir_filter.c
@@ -646,6 +646,153 @@ ice_fdir_teardown(struct ice_pf *pf)
}
}
+static int ice_fdir_cur_prof_conflict(struct ice_pf *pf,
+ enum ice_fltr_ptype ptype,
+ struct ice_flow_seg_info *seg,
+ bool is_tunnel)
+{
+ struct ice_hw *hw = ICE_PF_TO_HW(pf);
+ struct ice_flow_seg_info *ori_seg;
+ struct ice_fd_hw_prof *hw_prof;
+
+ hw_prof = hw->fdir_prof[ptype];
+ ori_seg = hw_prof->fdir_seg[is_tunnel];
+
+ /* profile does not exist */
+ if (!ori_seg)
+ return 0;
+
+ /* if no input set conflict, return -EAGAIN */
+ if ((!is_tunnel && !memcmp(ori_seg, seg, sizeof(*seg))) ||
+ (is_tunnel && !memcmp(&ori_seg[1], &seg[1], sizeof(*seg)))) {
+ PMD_DRV_LOG(DEBUG, "Profile already exist for flow type %d.",
+ ptype);
+ return -EAGAIN;
+ }
+
+ /* a rule with input set conflict already exist, so give up */
+ if (pf->fdir_fltr_cnt[ptype][is_tunnel]) {
+ PMD_DRV_LOG(DEBUG, "Failed to create profile for flow type %d due to conflict with exist rule.",
+ ptype);
+ return -EINVAL;
+ }
+
+ /* it's safe to delete an empty profile */
+ ice_fdir_prof_rm(pf, ptype, is_tunnel);
+ return 0;
+}
+
+static bool ice_fdir_prof_resolve_conflict(struct ice_pf *pf,
+ enum ice_fltr_ptype ptype,
+ bool is_tunnel)
+{
+ struct ice_hw *hw = ICE_PF_TO_HW(pf);
+ struct ice_fd_hw_prof *hw_prof;
+ struct ice_flow_seg_info *seg;
+
+ hw_prof = hw->fdir_prof[ptype];
+ seg = hw_prof->fdir_seg[is_tunnel];
+
+ /* profile does not exist */
+ if (!seg)
+ return true;
+
+ /* profile exist and rule exist, fail to resolve the conflict */
+ if (pf->fdir_fltr_cnt[ptype][is_tunnel] != 0)
+ return false;
+
+ /* it's safe to delete an empty profile */
+ ice_fdir_prof_rm(pf, ptype, is_tunnel);
+
+ return true;
+}
+
+static int ice_fdir_cross_prof_conflict(struct ice_pf *pf,
+ enum ice_fltr_ptype ptype,
+ bool is_tunnel)
+{
+ enum ice_fltr_ptype cflct_ptype;
+
+ switch (ptype) {
+ /* IPv4 */
+ case ICE_FLTR_PTYPE_NONF_IPV4_UDP:
+ case ICE_FLTR_PTYPE_NONF_IPV4_TCP:
+ case ICE_FLTR_PTYPE_NONF_IPV4_SCTP:
+ cflct_ptype = ICE_FLTR_PTYPE_NONF_IPV4_OTHER;
+ if (!ice_fdir_prof_resolve_conflict
+ (pf, cflct_ptype, is_tunnel))
+ goto err;
+ break;
+ case ICE_FLTR_PTYPE_NONF_IPV4_OTHER:
+ cflct_ptype = ICE_FLTR_PTYPE_NONF_IPV4_UDP;
+ if (!ice_fdir_prof_resolve_conflict
+ (pf, cflct_ptype, is_tunnel))
+ goto err;
+ cflct_ptype = ICE_FLTR_PTYPE_NONF_IPV4_TCP;
+ if (!ice_fdir_prof_resolve_conflict
+ (pf, cflct_ptype, is_tunnel))
+ goto err;
+ cflct_ptype = ICE_FLTR_PTYPE_NONF_IPV4_SCTP;
+ if (!ice_fdir_prof_resolve_conflict
+ (pf, cflct_ptype, is_tunnel))
+ goto err;
+ break;
+ /* IPv4 GTPU */
+ case ICE_FLTR_PTYPE_NONF_IPV4_GTPU_IPV4_UDP:
+ case ICE_FLTR_PTYPE_NONF_IPV4_GTPU_IPV4_TCP:
+ case ICE_FLTR_PTYPE_NONF_IPV4_GTPU_IPV4_ICMP:
+ cflct_ptype = ICE_FLTR_PTYPE_NONF_IPV4_GTPU_IPV4_OTHER;
+ if (!ice_fdir_prof_resolve_conflict
+ (pf, cflct_ptype, is_tunnel))
+ goto err;
+ break;
+ case ICE_FLTR_PTYPE_NONF_IPV4_GTPU_IPV4_OTHER:
+ cflct_ptype = ICE_FLTR_PTYPE_NONF_IPV4_GTPU_IPV4_OTHER;
+ if (!ice_fdir_prof_resolve_conflict
+ (pf, cflct_ptype, is_tunnel))
+ goto err;
+ cflct_ptype = ICE_FLTR_PTYPE_NONF_IPV4_GTPU_IPV4_OTHER;
+ if (!ice_fdir_prof_resolve_conflict
+ (pf, cflct_ptype, is_tunnel))
+ goto err;
+ cflct_ptype = ICE_FLTR_PTYPE_NONF_IPV4_GTPU_IPV4_OTHER;
+ if (!ice_fdir_prof_resolve_conflict
+ (pf, cflct_ptype, is_tunnel))
+ goto err;
+ break;
+ /* IPv6 */
+ case ICE_FLTR_PTYPE_NONF_IPV6_UDP:
+ case ICE_FLTR_PTYPE_NONF_IPV6_TCP:
+ case ICE_FLTR_PTYPE_NONF_IPV6_SCTP:
+ cflct_ptype = ICE_FLTR_PTYPE_NONF_IPV6_OTHER;
+ if (!ice_fdir_prof_resolve_conflict
+ (pf, cflct_ptype, is_tunnel))
+ goto err;
+ break;
+ case ICE_FLTR_PTYPE_NONF_IPV6_OTHER:
+ cflct_ptype = ICE_FLTR_PTYPE_NONF_IPV6_UDP;
+ if (!ice_fdir_prof_resolve_conflict
+ (pf, cflct_ptype, is_tunnel))
+ goto err;
+ cflct_ptype = ICE_FLTR_PTYPE_NONF_IPV6_TCP;
+ if (!ice_fdir_prof_resolve_conflict
+ (pf, cflct_ptype, is_tunnel))
+ goto err;
+ cflct_ptype = ICE_FLTR_PTYPE_NONF_IPV6_SCTP;
+ if (!ice_fdir_prof_resolve_conflict
+ (pf, cflct_ptype, is_tunnel))
+ goto err;
+ break;
+ default:
+ break;
+ }
+ return 0;
+err:
+ PMD_DRV_LOG(DEBUG, "Failed to create profile for flow type %d due to conflict with exist rule of flow type %d.",
+ ptype, cflct_ptype);
+ return -EINVAL;
+}
+
static int
ice_fdir_hw_tbl_conf(struct ice_pf *pf, struct ice_vsi *vsi,
struct ice_vsi *ctrl_vsi,
@@ -655,7 +802,6 @@ ice_fdir_hw_tbl_conf(struct ice_pf *pf, struct ice_vsi *vsi,
{
struct ice_hw *hw = ICE_PF_TO_HW(pf);
enum ice_flow_dir dir = ICE_FLOW_RX;
- struct ice_flow_seg_info *ori_seg;
struct ice_fd_hw_prof *hw_prof;
struct ice_flow_prof *prof;
uint64_t entry_1 = 0;
@@ -664,22 +810,15 @@ ice_fdir_hw_tbl_conf(struct ice_pf *pf, struct ice_vsi *vsi,
int ret;
uint64_t prof_id;
- hw_prof = hw->fdir_prof[ptype];
- ori_seg = hw_prof->fdir_seg[is_tunnel];
- if (ori_seg) {
- if (!is_tunnel) {
- if (!memcmp(ori_seg, seg, sizeof(*seg)))
- return -EAGAIN;
- } else {
- if (!memcmp(&ori_seg[1], &seg[1], sizeof(*seg)))
- return -EAGAIN;
- }
-
- if (pf->fdir_fltr_cnt[ptype][is_tunnel])
- return -EINVAL;
+ /* check if have input set conflict on current profile. */
+ ret = ice_fdir_cur_prof_conflict(pf, ptype, seg, is_tunnel);
+ if (ret)
+ return ret;
- ice_fdir_prof_rm(pf, ptype, is_tunnel);
- }
+ /* check if the profile is conflict with other profile. */
+ ret = ice_fdir_cross_prof_conflict(pf, ptype, is_tunnel);
+ if (ret)
+ return ret;
prof_id = ptype + is_tunnel * ICE_FLTR_PTYPE_MAX;
ret = ice_flow_add_prof(hw, ICE_BLK_FD, dir, prof_id, seg,
@@ -703,6 +842,7 @@ ice_fdir_hw_tbl_conf(struct ice_pf *pf, struct ice_vsi *vsi,
goto err_add_entry;
}
+ hw_prof = hw->fdir_prof[ptype];
pf->hw_prof_cnt[ptype][is_tunnel] = 0;
hw_prof->cnt = 0;
hw_prof->fdir_seg[is_tunnel] = seg;
--
2.13.6
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2019-11-16 8:59 [dpdk-dev] [PATCH v2] net/ice: fix FDIR flow type conflict Qi Zhang
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