From: Subbaraya Sundeep <[email protected]>
Add debugfs support to dump the MCAM rules installed using
NPC_INSTALL_FLOW mbox message. Debugfs file can display mcam
entry, counter if any, flow type and counter hits.
Ethtool will dump the ntuple flows related to the PF only.
The debugfs file gives systemwide view of the MCAM rules
installed by all the PF's.
Below is the example output when the debugfs file is read:
~ # mount -t debugfs none /sys/kernel/debug
~ # cat /sys/kernel/debug/octeontx2/npc/mcam_rules
Installed by: PF1
direction: RX
mcam entry: 227
udp source port 23 mask 0xffff
Forward to: PF1 VF0
action: Direct to queue 0
enabled: yes
counter: 1
hits: 0
Signed-off-by: Subbaraya Sundeep <[email protected]>
Signed-off-by: Sunil Goutham <[email protected]>
Signed-off-by: Naveen Mamindlapalli <[email protected]>
---
.../ethernet/marvell/octeontx2/af/rvu_debugfs.c | 197 +++++++++++++++++++++
1 file changed, 197 insertions(+)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
index b7b6b6f8865a..39e1a614aaf8 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
@@ -1770,6 +1770,198 @@ static int rvu_dbg_npc_rx_miss_stats_display(struct seq_file *filp,
RVU_DEBUG_SEQ_FOPS(npc_rx_miss_act, npc_rx_miss_stats_display, NULL);
+static void rvu_dbg_npc_mcam_show_flows(struct seq_file *s,
+ struct rvu_npc_mcam_rule *rule)
+{
+ u8 bit;
+
+ for_each_set_bit(bit, (unsigned long *)&rule->features, 64) {
+ seq_printf(s, "\t%s ", npc_get_field_name(bit));
+ switch (bit) {
+ case NPC_DMAC:
+ seq_printf(s, "%pM ", rule->packet.dmac);
+ seq_printf(s, "mask %pM\n", rule->mask.dmac);
+ break;
+ case NPC_SMAC:
+ seq_printf(s, "%pM ", rule->packet.smac);
+ seq_printf(s, "mask %pM\n", rule->mask.smac);
+ break;
+ case NPC_ETYPE:
+ seq_printf(s, "0x%x ", ntohs(rule->packet.etype));
+ seq_printf(s, "mask 0x%x\n", ntohs(rule->mask.etype));
+ break;
+ case NPC_OUTER_VID:
+ seq_printf(s, "%d ", ntohs(rule->packet.vlan_tci));
+ seq_printf(s, "mask 0x%x\n",
+ ntohs(rule->mask.vlan_tci));
+ break;
+ case NPC_TOS:
+ seq_printf(s, "%d ", rule->packet.tos);
+ seq_printf(s, "mask 0x%x\n", rule->mask.tos);
+ break;
+ case NPC_SIP_IPV4:
+ seq_printf(s, "%pI4 ", &rule->packet.ip4src);
+ seq_printf(s, "mask %pI4\n", &rule->mask.ip4src);
+ break;
+ case NPC_DIP_IPV4:
+ seq_printf(s, "%pI4 ", &rule->packet.ip4dst);
+ seq_printf(s, "mask %pI4\n", &rule->mask.ip4dst);
+ break;
+ case NPC_SIP_IPV6:
+ seq_printf(s, "%pI6 ", rule->packet.ip6src);
+ seq_printf(s, "mask %pI6\n", rule->mask.ip6src);
+ break;
+ case NPC_DIP_IPV6:
+ seq_printf(s, "%pI6 ", rule->packet.ip6dst);
+ seq_printf(s, "mask %pI6\n", rule->mask.ip6dst);
+ break;
+ case NPC_SPORT_TCP:
+ case NPC_SPORT_UDP:
+ case NPC_SPORT_SCTP:
+ seq_printf(s, "%d ", ntohs(rule->packet.sport));
+ seq_printf(s, "mask 0x%x\n", ntohs(rule->mask.sport));
+ break;
+ case NPC_DPORT_TCP:
+ case NPC_DPORT_UDP:
+ case NPC_DPORT_SCTP:
+ seq_printf(s, "%d ", ntohs(rule->packet.dport));
+ seq_printf(s, "mask 0x%x\n", ntohs(rule->mask.dport));
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+static void rvu_dbg_npc_mcam_show_action(struct seq_file *s,
+ struct rvu_npc_mcam_rule *rule)
+{
+ if (rule->intf == NIX_INTF_TX) {
+ switch (rule->tx_action.op) {
+ case NIX_TX_ACTIONOP_DROP:
+ seq_puts(s, "\taction: Drop\n");
+ break;
+ case NIX_TX_ACTIONOP_UCAST_DEFAULT:
+ seq_puts(s, "\taction: Unicast to default channel\n");
+ break;
+ case NIX_TX_ACTIONOP_UCAST_CHAN:
+ seq_printf(s, "\taction: Unicast to channel %d\n",
+ rule->tx_action.index);
+ break;
+ case NIX_TX_ACTIONOP_MCAST:
+ seq_puts(s, "\taction: Multicast\n");
+ break;
+ case NIX_TX_ACTIONOP_DROP_VIOL:
+ seq_puts(s, "\taction: Lockdown Violation Drop\n");
+ break;
+ default:
+ break;
+ };
+ } else {
+ switch (rule->rx_action.op) {
+ case NIX_RX_ACTIONOP_DROP:
+ seq_puts(s, "\taction: Drop\n");
+ break;
+ case NIX_RX_ACTIONOP_UCAST:
+ seq_printf(s, "\taction: Direct to queue %d\n",
+ rule->rx_action.index);
+ break;
+ case NIX_RX_ACTIONOP_RSS:
+ seq_puts(s, "\taction: RSS\n");
+ break;
+ case NIX_RX_ACTIONOP_UCAST_IPSEC:
+ seq_puts(s, "\taction: Unicast ipsec\n");
+ break;
+ case NIX_RX_ACTIONOP_MCAST:
+ seq_puts(s, "\taction: Multicast\n");
+ break;
+ default:
+ break;
+ };
+ }
+}
+
+static const char *rvu_dbg_get_intf_name(int intf)
+{
+ switch (intf) {
+ case NIX_INTFX_RX(0):
+ return "NIX0_RX";
+ case NIX_INTFX_RX(1):
+ return "NIX1_RX";
+ case NIX_INTFX_TX(0):
+ return "NIX0_TX";
+ case NIX_INTFX_TX(1):
+ return "NIX1_TX";
+ default:
+ break;
+ }
+
+ return "unknown";
+}
+
+static int rvu_dbg_npc_mcam_show_rules(struct seq_file *s, void *unused)
+{
+ struct rvu_npc_mcam_rule *iter;
+ struct rvu *rvu = s->private;
+ struct npc_mcam *mcam;
+ int pf, vf = -1;
+ int blkaddr;
+ u16 target;
+ u64 hits;
+
+ blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
+ if (blkaddr < 0)
+ return 0;
+
+ mcam = &rvu->hw->mcam;
+
+ mutex_lock(&mcam->lock);
+ list_for_each_entry(iter, &mcam->mcam_rules, list) {
+ pf = (iter->owner >> RVU_PFVF_PF_SHIFT) & RVU_PFVF_PF_MASK;
+ seq_printf(s, "\n\tInstalled by: PF%d ", pf);
+
+ if (iter->owner & RVU_PFVF_FUNC_MASK) {
+ vf = (iter->owner & RVU_PFVF_FUNC_MASK) - 1;
+ seq_printf(s, "VF%d", vf);
+ }
+ seq_puts(s, "\n");
+
+ seq_printf(s, "\tdirection: %s\n", is_npc_intf_rx(iter->intf) ?
+ "RX" : "TX");
+ seq_printf(s, "\tinterface: %s\n",
+ rvu_dbg_get_intf_name(iter->intf));
+ seq_printf(s, "\tmcam entry: %d\n", iter->entry);
+
+ rvu_dbg_npc_mcam_show_flows(s, iter);
+ if (iter->intf == NIX_INTF_RX) {
+ target = iter->rx_action.pf_func;
+ pf = (target >> RVU_PFVF_PF_SHIFT) & RVU_PFVF_PF_MASK;
+ seq_printf(s, "\tForward to: PF%d ", pf);
+
+ if (target & RVU_PFVF_FUNC_MASK) {
+ vf = (target & RVU_PFVF_FUNC_MASK) - 1;
+ seq_printf(s, "VF%d", vf);
+ }
+ seq_puts(s, "\n");
+ }
+
+ rvu_dbg_npc_mcam_show_action(s, iter);
+ seq_printf(s, "\tenabled: %s\n", iter->enable ? "yes" : "no");
+
+ if (!iter->has_cntr)
+ continue;
+ seq_printf(s, "\tcounter: %d\n", iter->cntr);
+
+ hits = rvu_read64(rvu, blkaddr, NPC_AF_MATCH_STATX(iter->cntr));
+ seq_printf(s, "\thits: %lld\n", hits);
+ }
+ mutex_unlock(&mcam->lock);
+
+ return 0;
+}
+
+RVU_DEBUG_SEQ_FOPS(npc_mcam_rules, npc_mcam_show_rules, NULL);
+
static void rvu_dbg_npc_init(struct rvu *rvu)
{
const struct device *dev = &rvu->pdev->dev;
@@ -1784,6 +1976,11 @@ static void rvu_dbg_npc_init(struct rvu *rvu)
if (!pfile)
goto create_failed;
+ pfile = debugfs_create_file("mcam_rules", 0444, rvu->rvu_dbg.npc,
+ rvu, &rvu_dbg_npc_mcam_rules_fops);
+ if (!pfile)
+ goto create_failed;
+
pfile = debugfs_create_file("rx_miss_act_stats", 0444, rvu->rvu_dbg.npc,
rvu, &rvu_dbg_npc_rx_miss_act_fops);
if (!pfile)
--
2.16.5
On Wed, 2020-11-11 at 12:43 +0530, Naveen Mamindlapalli wrote:
> From: Subbaraya Sundeep <[email protected]>
>
> Add debugfs support to dump the MCAM rules installed using
> NPC_INSTALL_FLOW mbox message. Debugfs file can display mcam
> entry, counter if any, flow type and counter hits.
>
> Ethtool will dump the ntuple flows related to the PF only.
> The debugfs file gives systemwide view of the MCAM rules
> installed by all the PF's.
>
> Below is the example output when the debugfs file is read:
> ~ # mount -t debugfs none /sys/kernel/debug
> ~ # cat /sys/kernel/debug/octeontx2/npc/mcam_rules
>
> Installed by: PF1
> direction: RX
> mcam entry: 227
> udp source port 23 mask 0xffff
> Forward to: PF1 VF0
> action: Direct to queue 0
> enabled: yes
> counter: 1
> hits: 0
>
I don't want to block this series or anything, but you might want to
use devlink dpipe interface for this:
https://www.kernel.org/doc/html/latest/networking/devlink/devlink-dpipe.html
As a future patch of course.
Thanks,
Saeed.
Hi Saeed,
> -----Original Message-----
> From: Saeed Mahameed <[email protected]>
> Sent: Friday, November 13, 2020 1:18 AM
> To: Naveen Mamindlapalli <[email protected]>; [email protected];
> [email protected]
> Cc: [email protected]; [email protected]; Sunil Kovvuri Goutham
> <[email protected]>; Linu Cherian <[email protected]>;
> Geethasowjanya Akula <[email protected]>; Jerin Jacob Kollanukkaran
> <[email protected]>; Subbaraya Sundeep Bhatta <[email protected]>;
> Hariprasad Kelam <[email protected]>
> Subject: Re: [PATCH v3 net-next 07/13] octeontx2-af: Add debugfs entry
> to dump the MCAM rules
>
> On Wed, 2020-11-11 at 12:43 +0530, Naveen Mamindlapalli wrote:
> > From: Subbaraya Sundeep <[email protected]>
> >
> > Add debugfs support to dump the MCAM rules installed using
> > NPC_INSTALL_FLOW mbox message. Debugfs file can display mcam entry,
> > counter if any, flow type and counter hits.
> >
> > Ethtool will dump the ntuple flows related to the PF only.
> > The debugfs file gives systemwide view of the MCAM rules installed by
> > all the PF's.
> >
> > Below is the example output when the debugfs file is read:
> > ~ # mount -t debugfs none /sys/kernel/debug ~ # cat
> > /sys/kernel/debug/octeontx2/npc/mcam_rules
> >
> > Installed by: PF1
> > direction: RX
> > mcam entry: 227
> > udp source port 23 mask 0xffff
> > Forward to: PF1 VF0
> > action: Direct to queue 0
> > enabled: yes
> > counter: 1
> > hits: 0
> >
>
> I don't want to block this series or anything, but you might want to use devlink
> dpipe interface for this:
>
> https://urldefense.proofpoint.com/v2/url?u=https-
> 3A__http://www.kernel.org_doc_html_latest_networking_devlink_devlink-
> 2Ddpipe.html&d=DwICaQ&c=nKjWec2b6R0mOyPaz7xtfQ&r=TwreqwV6mQ8K9
> wIpqwFO8yjikO_w1jUOe2MzChg4Rmg&m=Q3bIaVBAvCHGU817Tap8T9ooBFRP
> CJhP9kvFODtUnJg&s=YV7Q2w0JHxg9RUdwJvMfjC063Umev9Hpb6YvNSbe37A&e
> =
>
> As a future patch of course.
Thanks for the pointers. We will definitely look into adding the devlink dpipe support in future.
>
> Thanks,
> Saeed.