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octeontx2-pf: TC flower offload support for mirror

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This patch extends TC flower offload support for mirroring ingress
traffic to a different PF/VF. Below is an example command,

'tc filter add dev eth1 ingress protocol ip flower src_ip <ip-addr>
skip_sw action mirred ingress mirror dev eth2'

Signed-off-by: Suman Ghosh <sumang@marvell.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Suman Ghosh 2023-11-30 09:13:24 +05:30 committed by David S. Miller
parent 51b2804c19
commit df094d8fe8
1 changed files with 110 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

113
drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
View File

@ -29,6 +29,8 @@
#define OTX2_UNSUPP_LSE_DEPTH GENMASK(6, 4)
#define MCAST_INVALID_GRP (-1U)
struct otx2_tc_flow_stats {
u64 bytes;
u64 pkts;
@ -47,6 +49,7 @@ struct otx2_tc_flow {
bool is_act_police;
u32 prio;
struct npc_install_flow_req req;
u32 mcast_grp_idx;
u64 rate;
u32 burst;
bool is_pps;
@ -355,22 +358,96 @@ static int otx2_tc_act_set_police(struct otx2_nic *nic,
return rc;
}
static int otx2_tc_update_mcast(struct otx2_nic *nic,
struct npc_install_flow_req *req,
struct netlink_ext_ack *extack,
struct otx2_tc_flow *node,
struct nix_mcast_grp_update_req *ureq,
u8 num_intf)
{
struct nix_mcast_grp_update_req *grp_update_req;
struct nix_mcast_grp_create_req *creq;
struct nix_mcast_grp_create_rsp *crsp;
u32 grp_index;
int rc;
mutex_lock(&nic->mbox.lock);
creq = otx2_mbox_alloc_msg_nix_mcast_grp_create(&nic->mbox);
if (!creq) {
rc = -ENOMEM;
goto error;
}
creq->dir = NIX_MCAST_INGRESS;
/* Send message to AF */
rc = otx2_sync_mbox_msg(&nic->mbox);
if (rc) {
NL_SET_ERR_MSG_MOD(extack, "Failed to create multicast group");
goto error;
}
crsp = (struct nix_mcast_grp_create_rsp *)otx2_mbox_get_rsp(&nic->mbox.mbox,
0,
&creq->hdr);
if (IS_ERR(crsp)) {
rc = PTR_ERR(crsp);
goto error;
}
grp_index = crsp->mcast_grp_idx;
grp_update_req = otx2_mbox_alloc_msg_nix_mcast_grp_update(&nic->mbox);
if (!grp_update_req) {
NL_SET_ERR_MSG_MOD(extack, "Failed to update multicast group");
rc = -ENOMEM;
goto error;
}
ureq->op = NIX_MCAST_OP_ADD_ENTRY;
ureq->mcast_grp_idx = grp_index;
ureq->num_mce_entry = num_intf;
ureq->pcifunc[0] = nic->pcifunc;
ureq->channel[0] = nic->hw.tx_chan_base;
ureq->dest_type[0] = NIX_RX_RSS;
ureq->rq_rss_index[0] = 0;
memcpy(&ureq->hdr, &grp_update_req->hdr, sizeof(struct mbox_msghdr));
memcpy(grp_update_req, ureq, sizeof(struct nix_mcast_grp_update_req));
/* Send message to AF */
rc = otx2_sync_mbox_msg(&nic->mbox);
if (rc) {
NL_SET_ERR_MSG_MOD(extack, "Failed to update multicast group");
goto error;
}
mutex_unlock(&nic->mbox.lock);
req->op = NIX_RX_ACTIONOP_MCAST;
req->index = grp_index;
node->mcast_grp_idx = grp_index;
return 0;
error:
mutex_unlock(&nic->mbox.lock);
return rc;
}
static int otx2_tc_parse_actions(struct otx2_nic *nic,
struct flow_action *flow_action,
struct npc_install_flow_req *req,
struct flow_cls_offload *f,
struct otx2_tc_flow *node)
{
struct nix_mcast_grp_update_req dummy_grp_update_req = { 0 };
struct netlink_ext_ack *extack = f->common.extack;
bool pps = false, mcast = false;
struct flow_action_entry *act;
struct net_device *target;
struct otx2_nic *priv;
u32 burst, mark = 0;
u8 nr_police = 0;
bool pps = false;
u8 num_intf = 1;
int err, i;
u64 rate;
int err;
int i;
if (!flow_action_has_entries(flow_action)) {
NL_SET_ERR_MSG_MOD(extack, "no tc actions specified");
@ -442,11 +519,30 @@ static int otx2_tc_parse_actions(struct otx2_nic *nic,
req->index = act->rx_queue;
break;
case FLOW_ACTION_MIRRED_INGRESS:
target = act->dev;
priv = netdev_priv(target);
dummy_grp_update_req.pcifunc[num_intf] = priv->pcifunc;
dummy_grp_update_req.channel[num_intf] = priv->hw.tx_chan_base;
dummy_grp_update_req.dest_type[num_intf] = NIX_RX_RSS;
dummy_grp_update_req.rq_rss_index[num_intf] = 0;
mcast = true;
num_intf++;
break;
default:
return -EOPNOTSUPP;
}
}
if (mcast) {
err = otx2_tc_update_mcast(nic, req, extack, node,
&dummy_grp_update_req,
num_intf);
if (err)
return err;
}
if (nr_police > 1) {
NL_SET_ERR_MSG_MOD(extack,
"rate limit police offload requires a single action");
@ -1066,6 +1162,7 @@ static int otx2_tc_del_flow(struct otx2_nic *nic,
struct flow_cls_offload *tc_flow_cmd)
{
struct otx2_flow_config *flow_cfg = nic->flow_cfg;
struct nix_mcast_grp_destroy_req *grp_destroy_req;
struct otx2_tc_flow *flow_node;
int err;
@ -1099,6 +1196,15 @@ static int otx2_tc_del_flow(struct otx2_nic *nic,
mutex_unlock(&nic->mbox.lock);
}
/* Remove the multicast/mirror related nodes */
if (flow_node->mcast_grp_idx != MCAST_INVALID_GRP) {
mutex_lock(&nic->mbox.lock);
grp_destroy_req = otx2_mbox_alloc_msg_nix_mcast_grp_destroy(&nic->mbox);
grp_destroy_req->mcast_grp_idx = flow_node->mcast_grp_idx;
otx2_sync_mbox_msg(&nic->mbox);
mutex_unlock(&nic->mbox.lock);
}
free_mcam_flow:
otx2_del_mcam_flow_entry(nic, flow_node->entry, NULL);
@ -1138,6 +1244,7 @@ static int otx2_tc_add_flow(struct otx2_nic *nic,
spin_lock_init(&new_node->lock);
new_node->cookie = tc_flow_cmd->cookie;
new_node->prio = tc_flow_cmd->common.prio;
new_node->mcast_grp_idx = MCAST_INVALID_GRP;
memset(&dummy, 0, sizeof(struct npc_install_flow_req));