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Message-ID: <20250206235334.1425329-8-kuba@kernel.org>
Date: Thu, 6 Feb 2025 15:53:34 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org,
edumazet@...gle.com,
pabeni@...hat.com,
andrew+netdev@...n.ch,
horms@...nel.org,
Alexander Duyck <alexanderduyck@...a.com>,
Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net-next 7/7] eth: fbnic: support listing tcam content via debugfs
From: Alexander Duyck <alexanderduyck@...a.com>
The device has a handful of relatively small TCAM tables,
support dumping the driver state via debugfs.
# ethtool -N eth0 flow-type tcp6 \
dst-ip 1111::2222 dst-port $((0x1122)) \
src-ip 3333::4444 src-port $((0x3344)) \
action 2
Added rule with ID 47
# cd $dbgfs
# cat ip_src
Idx S TCAM Bitmap V Addr/Mask
------------------------------------
00 1 00020000,00000000 6 33330000000000000000000000004444
00000000000000000000000000000000
...
# cat ip_dst
Idx S TCAM Bitmap V Addr/Mask
------------------------------------
00 1 00020000,00000000 6 11110000000000000000000000002222
00000000000000000000000000000000
...
# cat act_tcam
Idx S Value/Mask RSS Dest
------------------------------------------------------------------------
...
49 1 0000 0000 0000 0000 0000 0000 1122 3344 0000 9c00 0088 000f 00000212
ffff ffff ffff ffff ffff ffff 0000 0000 ffff 23ff ff00
...
The ipo_* tables are for outer IP addresses.
The tce_* table is for directing/stealing traffic to NC-SI.
Signed-off-by: Alexander Duyck <alexanderduyck@...a.com>
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
.../net/ethernet/meta/fbnic/fbnic_debugfs.c | 138 ++++++++++++++++++
1 file changed, 138 insertions(+)
diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c b/drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c
index ac80981f67c0..e8f2d7f2d962 100644
--- a/drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c
+++ b/drivers/net/ethernet/meta/fbnic/fbnic_debugfs.c
@@ -44,6 +44,132 @@ static int fbnic_dbg_mac_addr_show(struct seq_file *s, void *v)
}
DEFINE_SHOW_ATTRIBUTE(fbnic_dbg_mac_addr);
+static int fbnic_dbg_tce_tcam_show(struct seq_file *s, void *v)
+{
+ struct fbnic_dev *fbd = s->private;
+ int i, tcam_idx = 0;
+ char hdr[80];
+
+ /* Generate Header */
+ snprintf(hdr, sizeof(hdr), "%3s %s %-17s %s\n",
+ "Idx", "S", "TCAM Bitmap", "Addr/Mask");
+ seq_puts(s, hdr);
+ fbnic_dbg_desc_break(s, strnlen(hdr, sizeof(hdr)));
+
+ for (i = 0; i < ARRAY_SIZE(fbd->mac_addr); i++) {
+ struct fbnic_mac_addr *mac_addr = &fbd->mac_addr[i];
+
+ /* Verify BMC bit is set */
+ if (!test_bit(FBNIC_MAC_ADDR_T_BMC, mac_addr->act_tcam))
+ continue;
+
+ if (tcam_idx == FBNIC_TCE_TCAM_NUM_ENTRIES)
+ break;
+
+ seq_printf(s, "%02d %d %64pb %pm\n",
+ tcam_idx, mac_addr->state, mac_addr->act_tcam,
+ mac_addr->value.addr8);
+ seq_printf(s, " %pm\n",
+ mac_addr->mask.addr8);
+ tcam_idx++;
+ }
+
+ return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(fbnic_dbg_tce_tcam);
+
+static int fbnic_dbg_act_tcam_show(struct seq_file *s, void *v)
+{
+ struct fbnic_dev *fbd = s->private;
+ char hdr[80];
+ int i;
+
+ /* Generate Header */
+ snprintf(hdr, sizeof(hdr), "%3s %s %-55s %-4s %s\n",
+ "Idx", "S", "Value/Mask", "RSS", "Dest");
+ seq_puts(s, hdr);
+ fbnic_dbg_desc_break(s, strnlen(hdr, sizeof(hdr)));
+
+ for (i = 0; i < FBNIC_RPC_TCAM_ACT_NUM_ENTRIES; i++) {
+ struct fbnic_act_tcam *act_tcam = &fbd->act_tcam[i];
+
+ seq_printf(s, "%02d %d %04x %04x %04x %04x %04x %04x %04x %04x %04x %04x %04x %04x %08x\n",
+ i, act_tcam->state,
+ act_tcam->value.tcam[10], act_tcam->value.tcam[9],
+ act_tcam->value.tcam[8], act_tcam->value.tcam[7],
+ act_tcam->value.tcam[6], act_tcam->value.tcam[5],
+ act_tcam->value.tcam[4], act_tcam->value.tcam[3],
+ act_tcam->value.tcam[2], act_tcam->value.tcam[1],
+ act_tcam->value.tcam[0], act_tcam->rss_en_mask,
+ act_tcam->dest);
+ seq_printf(s, " %04x %04x %04x %04x %04x %04x %04x %04x %04x %04x %04x\n",
+ act_tcam->mask.tcam[10], act_tcam->mask.tcam[9],
+ act_tcam->mask.tcam[8], act_tcam->mask.tcam[7],
+ act_tcam->mask.tcam[6], act_tcam->mask.tcam[5],
+ act_tcam->mask.tcam[4], act_tcam->mask.tcam[3],
+ act_tcam->mask.tcam[2], act_tcam->mask.tcam[1],
+ act_tcam->mask.tcam[0]);
+ }
+
+ return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(fbnic_dbg_act_tcam);
+
+static int fbnic_dbg_ip_addr_show(struct seq_file *s,
+ struct fbnic_ip_addr *ip_addr)
+{
+ char hdr[80];
+ int i;
+
+ /* Generate Header */
+ snprintf(hdr, sizeof(hdr), "%3s %s %-17s %s %s\n",
+ "Idx", "S", "TCAM Bitmap", "V", "Addr/Mask");
+ seq_puts(s, hdr);
+ fbnic_dbg_desc_break(s, strnlen(hdr, sizeof(hdr)));
+
+ for (i = 0; i < FBNIC_RPC_TCAM_IP_ADDR_NUM_ENTRIES; i++, ip_addr++) {
+ seq_printf(s, "%02d %d %64pb %d %pi6\n",
+ i, ip_addr->state, ip_addr->act_tcam,
+ ip_addr->version, &ip_addr->value);
+ seq_printf(s, " %pi6\n",
+ &ip_addr->mask);
+ }
+
+ return 0;
+}
+
+static int fbnic_dbg_ip_src_show(struct seq_file *s, void *v)
+{
+ struct fbnic_dev *fbd = s->private;
+
+ return fbnic_dbg_ip_addr_show(s, fbd->ip_src);
+}
+DEFINE_SHOW_ATTRIBUTE(fbnic_dbg_ip_src);
+
+static int fbnic_dbg_ip_dst_show(struct seq_file *s, void *v)
+{
+ struct fbnic_dev *fbd = s->private;
+
+ return fbnic_dbg_ip_addr_show(s, fbd->ip_dst);
+}
+DEFINE_SHOW_ATTRIBUTE(fbnic_dbg_ip_dst);
+
+static int fbnic_dbg_ipo_src_show(struct seq_file *s, void *v)
+{
+ struct fbnic_dev *fbd = s->private;
+
+ return fbnic_dbg_ip_addr_show(s, fbd->ipo_src);
+}
+DEFINE_SHOW_ATTRIBUTE(fbnic_dbg_ipo_src);
+
+static int fbnic_dbg_ipo_dst_show(struct seq_file *s, void *v)
+{
+ struct fbnic_dev *fbd = s->private;
+
+ return fbnic_dbg_ip_addr_show(s, fbd->ipo_dst);
+}
+DEFINE_SHOW_ATTRIBUTE(fbnic_dbg_ipo_dst);
+
static int fbnic_dbg_pcie_stats_show(struct seq_file *s, void *v)
{
struct fbnic_dev *fbd = s->private;
@@ -84,6 +210,18 @@ void fbnic_dbg_fbd_init(struct fbnic_dev *fbd)
&fbnic_dbg_pcie_stats_fops);
debugfs_create_file("mac_addr", 0400, fbd->dbg_fbd, fbd,
&fbnic_dbg_mac_addr_fops);
+ debugfs_create_file("tce_tcam", 0400, fbd->dbg_fbd, fbd,
+ &fbnic_dbg_tce_tcam_fops);
+ debugfs_create_file("act_tcam", 0400, fbd->dbg_fbd, fbd,
+ &fbnic_dbg_act_tcam_fops);
+ debugfs_create_file("ip_src", 0400, fbd->dbg_fbd, fbd,
+ &fbnic_dbg_ip_src_fops);
+ debugfs_create_file("ip_dst", 0400, fbd->dbg_fbd, fbd,
+ &fbnic_dbg_ip_dst_fops);
+ debugfs_create_file("ipo_src", 0400, fbd->dbg_fbd, fbd,
+ &fbnic_dbg_ipo_src_fops);
+ debugfs_create_file("ipo_dst", 0400, fbd->dbg_fbd, fbd,
+ &fbnic_dbg_ipo_dst_fops);
}
void fbnic_dbg_fbd_exit(struct fbnic_dev *fbd)
--
2.48.1
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